CN111896627A - Method for detecting quality of new and old concrete joint surface of reinforced concrete structure - Google Patents
Method for detecting quality of new and old concrete joint surface of reinforced concrete structure Download PDFInfo
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- CN111896627A CN111896627A CN202010628895.9A CN202010628895A CN111896627A CN 111896627 A CN111896627 A CN 111896627A CN 202010628895 A CN202010628895 A CN 202010628895A CN 111896627 A CN111896627 A CN 111896627A
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- 239000004567 concrete Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 30
- 230000007547 defect Effects 0.000 claims abstract description 43
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
- G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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Abstract
The invention discloses a method for detecting the quality of a new and old concrete joint surface of a reinforced concrete structure, which comprises the following steps: s1, firstly, carrying out surface treatment on a measuring area and then positioning a measuring point for the reinforced concrete structural member to be detected, and then scanning the measuring point by using a phased array ultrasonic imager; s2, combining the scanned images of the measuring points to form an ultrasonic image of a measuring line, determining a new and old concrete joint surface reference line according to the position of the joint surface, and marking the new and old concrete joint surface reference line in the ultrasonic image of the measuring line; s3, determining the position and the range of the defect through the color change near the junction surface reference line; and S4, respectively calculating whether the bearing capacity and the deformation of the member influenced by the defect area are considered, and comprehensively judging whether the quality of the concrete joint surface is qualified according to the influence of the defect area on the bearing capacity and the deformation.
Description
Technical Field
The invention relates to the technical field of building detection, in particular to a detection method for detecting the quality of a new concrete joint surface and an old concrete joint surface of a reinforced concrete structure.
Background
With the updating of building specifications and the change of existing building functions, the reinforcement and reconstruction of the existing building become an important content of infrastructure construction. Therefore, the position of engineering inspection and reinforcement technology in the construction industry will become more and more important. The reinforcement and reconstruction of the engineering structure can greatly reduce the construction cost and reduce the negative influence caused by dismantling the building structure, and the method is an effective way for saving social resources.
The method for reinforcing the section by enlarging the section is to wrap concrete outside the reinforced concrete member (usually, a concrete cast-in-place layer is added in a compression area of the reinforced concrete flexural member, and the reinforcement amount is added in a tension area), enlarge the section area and the reinforcement amount of the member, and increase the effective height of the section, thereby improving the bending resistance of the normal section, the shear resistance of the oblique section and the section rigidity of the member, and playing a role in reinforcing. The quality of the joint surface of the new concrete and the old concrete is the key for the successful application of the section reinforcing method. However, research data has shown that: the surface roughness of the concrete to be reinforced, the surface treatment method, whether the surface is brushed with an interface agent or not and the like have great influence on the bonding quality of the joint surfaces of the new concrete and the old concrete.
In the prior art, core sample drilling, infrared method or hammering method is usually adopted to check the bonding quality of the new and old concrete bonding surfaces on site. Some scholars propose field detection methods such as a drill core bonding and drawing method, a drill core bar-planting and drawing method and the like to test the bonding strength of the joint surface of the new concrete and the old concrete, but the field detection is not intuitive enough, the data discreteness is large, and the adhesive layer is easy to be damaged due to manual operation. Therefore, the quality detection of the joint surface of new and old concrete is still a big problem.
Disclosure of Invention
The invention aims to solve the technical problem of providing a detection method which is simple and feasible, can comprehensively know the defect distribution condition of a joint surface, can quantitatively judge the quality of the joint surface of a reinforced concrete member and can improve the detection precision and the detection efficiency and is suitable for the quality of the joint surface of new and old concrete of a reinforced concrete structure.
The technical problem to be solved can be implemented by the following technical scheme.
A detection method for the quality of a new concrete joint surface and an old concrete joint surface of a reinforced concrete structure is characterized by comprising the following steps:
s1, aiming at a reinforced concrete structure member to be detected, firstly carrying out surface treatment on a measuring area, then positioning a measuring point, and then scanning the measuring point by adopting a phased array ultrasonic imager;
s2, combining the scanned images of the measuring points to form an ultrasonic image of a measuring line, determining a new and old concrete joint surface reference line according to the position of the joint surface, and marking the new and old concrete joint surface reference line in the ultrasonic image of the measuring line;
s3, determining the position and the range of the defect through the color change near the junction surface reference line;
and S4, respectively calculating whether the bearing capacity and the deformation of the member influenced by the defect area are considered, and comprehensively judging whether the quality of the concrete joint surface is qualified according to the influence of the defect area on the bearing capacity and the deformation.
As a further improvement of the present invention, the surface treatment of the measurement area in step S1 includes the step of smoothing the surface of the measurement area with a grinding wheel or with a high-strength quick-setting mortar.
As a further improvement of the present technical solution, in step S1, when two parallel surfaces of the member are simultaneously reinforced, a measuring area is arranged on one or two reinforced surfaces; and when the size of the member in the reinforcing direction is larger than 1000mm, the measuring areas are simultaneously arranged on the two reinforcing surfaces.
As a further improvement of the technical solution, in step S1, grid lines are drawn on the surface of the concrete member with the joint surfaces parallel to each other to assist the positioning of the measuring points; and, when the test area width is small (not more than 300mm), only longitudinal (member length direction) grid lines are arranged; when the width of the measuring area is larger (larger than 300mm), the longitudinal and transverse grid lines are arranged at the same time, the distance between the grid lines in each direction and the distance between the outermost grid line and the edge of the component are consistent, and the distance is not larger than 500mm (the distance is mainly used for controlling the density of the measuring points and is provided by combining the detection capability of equipment).
Also as a further improvement of the present technical solution, in step S1, the positioning requirement of the measurement point is as follows: firstly, assisting the positioning of the measuring points according to grid lines; then, the measuring points are uniformly arranged along the whole length of each measuring line, the distance between every two adjacent measuring points is not more than the difference between the length of the probe of the instrument and the row distance of the probes, and the distance between the probe at the outermost side and the edge of the component is not less than 40 mm.
As a further improvement of the present technical solution, in step S1, when scanning each measurement point with the phased array ultrasound imager, scanning is performed sequentially along each grid line direction, the length direction of the probe area coincides with the grid line direction, and the center point of the probe area is located right in front of (e.g. right above or right below) the measurement point.
Also as a further improvement of the present invention, in step S2, the ultrasound image of the measuring line is formed by sequentially overlapping the scanned images of the measuring points.
Also as a further improvement of the present technical solution, in step S3, the ultrasonic image of each measurement line is analyzed, when a color mutation area exists near the joint surface reference line, the area is a quality defect area, and the range and distribution of the component joint surface defect area are marked in the ultrasonic image.
Further, in step S4, the step of determining whether the quality of the concrete joint surface is acceptable includes:
a) calculating the area ratio of the defects of the joint surfaces according to the ratio of the area of the defect area of each joint surface to the total area of the joint surfaces, and performing initial judgment;
when the average value of the defect area ratio of each joint surface is not more than 5 percent or the defect area ratio of any joint surface is not more than 10 percent, directly judging the joint surface of the concrete member to be qualified, otherwise, judging according to the subsequent steps;
b) supposing that the new concrete and the old concrete of the member achieve complete combined action, calculating the expected bearing capacity and the expected maximum deformation of the reinforced concrete member by adopting a finite element method; the combined action of new and old concrete in the quality defect area is not considered, and the actual bearing capacity and the actual maximum deformation of the reinforced concrete member are calculated by adopting a finite element method according to the actual range and distribution of the defect area;
c) and if the actual bearing capacity of the member is not less than 95% of the expected bearing capacity or the actual maximum deformation is not more than 105% of the expected maximum deformation, judging that the quality of the joint surface of the concrete member is qualified, otherwise, judging that the joint surface of the concrete member is unqualified.
As one of the preferred embodiments of the invention, the distance between adjacent measuring points is 190 mm.
The method for detecting the quality of the joint surface of the new concrete and the old concrete for reinforcing the concrete structure by adopting the technical scheme has the following beneficial effects:
1) the method is simple and feasible, can comprehensively know the defect distribution condition of the joint surface, and quantitatively judge the quality of the joint surface of the reinforced concrete member;
2) compared with damage detection methods such as a core drilling method, a core drilling drawing method and the like, the damage to concrete structural members can be reduced, and the detection result is more comprehensive.
Drawings
FIG. 1 is a schematic cross-sectional view of a reinforced concrete member according to the method for detecting the quality of the joint surface of new and old concrete of a reinforced concrete structure;
FIG. 2 is a schematic diagram of grid lines and measurement point arrangement on the side surface of a beam web plate in the detection method for the quality of the new and old concrete joint surface of the reinforced concrete structure;
FIG. 3 is a schematic view of a transverse survey line ultrasonic image of the cross center of the side surface of a beam web for the detection method of the quality of the new and old concrete joint surface of the reinforced concrete structure.
In the figure, 1 — old concrete; 2-new concrete for reinforcement; 3-combining side of web; 4-beam bottom joint surface; 5-combining side of web plate; 6-joint surface void defect; 7-web side; 8-beam bottom surface; 9-web side; 10-longitudinal grid lines; 11-transverse gridlines; 12-transverse measuring point; 13-longitudinal measuring point.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, an old concrete 1 represents a concrete beam in an existing building, the span is 5000mm, the original section width is 280mm, the section height is 600mm, the reinforcing concrete 2 in the drawing is formed after reinforcement is carried out by adopting an enlarged section method, the section width after reinforcement is 480mm, the section height after reinforcement is 750mm, and the thickness of a floor slab is 110 mm.
The joint surface of the 120mm area of the top plate bottom of the beam has a void defect (see joint surface void defect 6 in the figure), and as shown in figures 1-3, the quality of the new and old concrete joint surfaces is detected. Detecting the size of the equipment: the length of the working surface is 240mm, the width of the working surface is 90mm, the length of the probe area is 210mm, the width of the probe area is 48mm, the distance between the probes in the length direction is 30mm, and the distance between the probes in the width direction is 24 mm.
The method comprises the following specific steps:
the first step is as follows: for a reinforced concrete beam to be detected (namely the old concrete 1), firstly, surface treatment is carried out on a measuring area, then, a measuring point is positioned, and then, a phased array ultrasonic imager is adopted to scan the measuring point.
And the surface of the measuring area is ground flat by using a grinding wheel, the measuring areas are respectively arranged on the side surface 7 of the web plate on one side of the beam and the bottom surface 8 of the beam, and grid lines are drawn. The web side 7 is simultaneously provided with longitudinal grid lines 10 and transverse grid lines 11, the beam bottom 8 is only provided with the longitudinal grid lines 10, and the spacing between the grid lines is 150 mm. The transverse measuring points 12 and the longitudinal measuring points 13 are uniformly arranged along the whole length of each measuring line, the distance between the adjacent measuring points is 190mm, and the distance between the outermost measuring point and the edge of the member is 160 mm. The phased array ultrasonic imager is adopted to scan along each grid line direction in sequence, the length direction of the probe area is consistent with the grid line direction, and the central point of the probe area is arranged right above a measuring point (right below when the bottom surface 8 of the beam is scanned).
The second step is that: and combining the scanning images of the measuring points to form an ultrasonic image of the measuring line, and determining a reference line of the joint surface of the new concrete and the old concrete according to the position of the joint surface.
The ultrasonic image of each measuring line is formed by sequentially overlapping the scanning images of each measuring point. Since the dimension of the member in the reinforcement direction is not more than 1000mm, any one of the web side faces 7 and 9 is selected for testing; when the side surface 7 of the web plate is selected for testing, the depths of the bonding surfaces 3 and 5 of the side edges of the web plate are respectively 100mm and 380mm, the depth of the bonding surface 4 of the bottom surface of the beam is 150mm, and the reference lines of the bonding surfaces of the new concrete and the old concrete are marked in an ultrasonic image of a measuring line.
The third step: the position and range of the defect is determined by the color change near the junction surface reference line.
Analyzing the ultrasonic images of all measuring lines, wherein in the ultrasonic images corresponding to the upper measuring line of the side surface of the web, a color mutation region (red region) exists at the position of 100mm depth of the side surface of the web in the beam span, and can be distinguished as a defect region, and the area of the defect region (namely the junction surface cavity defect 6 in the figure) is 600000mm by integrating the ultrasonic images of the other measuring lines2And the beam is distributed in the upper area of the full span of the beam. The other joint surfaces are all flawless.
The fourth step: and whether the bearing capacity and the deformation are respectively calculated by considering the influence of the defect area or not, and whether the quality of the concrete joint surface is qualified or not is comprehensively judged according to the influence of the defect area on the bearing capacity and the deformation.
And calculating the defect area ratio of the joint surfaces according to the ratio of the defect area of each joint surface to the total area of the joint surfaces, and carrying out initial judgment, wherein the defect area ratio of the joint surfaces of the web side joint surface 3 is 12.0%, and the defect area ratio of the joint surfaces of the web side joint surface 5 and the beam bottom joint surface 4 on the other side is 0. The defect area ratio of the web side joint surface 3 is more than 10%, and the joint surface of the concrete member is judged according to the subsequent steps.
Supposing that the new concrete and the old concrete of the member achieve complete coaction, the expected bearing capacity and the expected maximum deformation of the reinforced concrete member are respectively 517.5 kN.m and 8.2mm by calculation by adopting a finite element method; the combined action of new and old concrete in the quality defect area is not considered, and the actual bearing capacity and the actual maximum deformation of the reinforced concrete member are respectively 504.6 kN.m and 9.0mm by adopting a finite element method according to the actual range and distribution of the defect area; the actual maximum deformation is larger than 105% of the expected maximum deformation, and the joint surface of the concrete member is judged to be unqualified.
In addition, it should be specifically noted that, since the transverse direction and the longitudinal direction are specific to each detection surface, each detection surface is taken out separately, and then the measuring lines are arranged in the longitudinal direction and the transverse direction; the lateral and longitudinal representations in fig. 1-3 are independent of each other.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A detection method for quality of a new concrete and old concrete joint surface of a reinforced concrete structure is characterized by comprising the following steps:
s1, firstly, carrying out surface treatment on a measuring area and then positioning a measuring point for the reinforced concrete structural member to be detected, and then scanning the measuring point by using a phased array ultrasonic imager;
s2, combining the scanned images of the measuring points to form an ultrasonic image of a measuring line, determining a new and old concrete joint surface reference line according to the position of the joint surface, and marking the new and old concrete joint surface reference line in the ultrasonic image of the measuring line;
s3, determining the position and the range of the defect through the color change near the junction surface reference line;
and S4, respectively calculating whether the bearing capacity and the deformation of the member influenced by the defect area are considered, and comprehensively judging whether the quality of the concrete joint surface is qualified according to the influence of the defect area on the bearing capacity and the deformation.
2. The method for inspecting quality of a joint surface between new and old concrete of a reinforced concrete structure as set forth in claim 1, wherein the surface treatment of the test area in step S1 includes the step of smoothing the surface of the test area with a grinding wheel or with a high-strength quick-setting mortar.
3. The method for testing the quality of a joint surface between new and old concrete of a reinforced concrete structure as claimed in claim 1, wherein in step S1, when two parallel surfaces of the member are reinforced simultaneously, a measuring area is arranged on one or two reinforcing surfaces; and when the size of the member in the reinforcing direction is larger than 1000mm, the measuring areas are simultaneously arranged on the two reinforcing surfaces.
4. The method for detecting the quality of the joint surfaces of new and old concrete for reinforcing a concrete structure as claimed in claim 1, wherein in step S1, the positioning of the measuring points is assisted by drawing grid lines on the surfaces of the concrete members with the joint surfaces parallel to each other; and, when the width of the measuring area is not more than 300mm, only arranging the longitudinal grid lines; when the width of the measuring area is larger than 300mm, the longitudinal grid lines and the transverse grid lines are arranged at the same time, the distance between the grid lines in all directions and the distance between the outermost grid line and the edge of the member are consistent, and the distance is not larger than 500 mm.
5. The method for testing the quality of the joint surface between new and old concrete of a reinforced concrete structure as claimed in claim 1, wherein in step S1, the positioning requirements of the test points are as follows: firstly, assisting the positioning of the measuring points according to grid lines; then, the measuring points are uniformly arranged along the whole length of each measuring line, the distance between every two adjacent measuring points is not more than the difference between the length of the probe of the instrument and the row distance of the probes, and the distance between the probe at the outermost side and the edge of the component is not less than 40 mm.
6. The method for testing the quality of the joint surface of new and old concrete for reinforced concrete structure as claimed in claim 5, wherein in step S1, when scanning each measuring point with phased array ultrasonic imager, scanning is performed in sequence along each grid line direction, the length direction of the probe area is consistent with the grid line direction, and the center point of the probe area is placed right in front of the measuring point.
7. The method for testing the quality of the joint surface between new and old concrete of a reinforced concrete structure as claimed in claim 1, wherein in step S2, the ultrasonic images of the measuring lines are sequentially overlapped from the scanned images of the measuring points.
8. The method for testing the quality of the joint surface of new and old concrete for reinforcing a concrete structure as claimed in claim 1, wherein in step S3, the ultrasonic image of each measuring line is analyzed, when there is a sudden change area in the color near the reference line of the joint surface, the area is a quality defect area, and the range and distribution of the defect area of the joint surface of the member are marked in the ultrasonic image.
9. The method for detecting the quality of the joint surface of new and old concrete for reinforcing a concrete structure as claimed in claim 1, wherein the step of determining whether the quality of the joint surface of concrete is qualified in step S4 comprises:
a) calculating the area ratio of the defects of the joint surfaces according to the ratio of the area of the defect area of each joint surface to the total area of the joint surfaces, and performing initial judgment;
when the average value of the defect area ratio of each joint surface is not more than 5 percent or the defect area ratio of any joint surface is not more than 10 percent, directly judging the joint surface of the concrete member to be qualified, otherwise, judging according to the subsequent steps;
b) supposing that the new concrete and the old concrete of the member achieve complete combined action, calculating the expected bearing capacity and the expected maximum deformation of the reinforced concrete member by adopting a finite element method; the combined action of new and old concrete in the quality defect area is not considered, and the actual bearing capacity and the actual maximum deformation of the reinforced concrete member are calculated by adopting a finite element method according to the actual range and distribution of the defect area;
c) and if the actual bearing capacity of the member is not less than 95% of the expected bearing capacity or the actual maximum deformation is not more than 105% of the expected maximum deformation, judging that the quality of the joint surface of the concrete member is qualified, otherwise, judging that the joint surface of the concrete member is unqualified.
10. The method for detecting the quality of the joint surface of new and old concrete for reinforcing a concrete structure as claimed in claim 5, wherein the distance between adjacent measuring points is 190 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509503A (en) * | 2022-02-18 | 2022-05-17 | 成都升拓工程检测有限公司 | Method for determining position of grouting defect pore channel of prestressed concrete bridge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314003A (en) * | 2014-08-06 | 2015-01-28 | 重庆交通大学 | Long-life reinforcing mesh flexible fiber reinforced concrete bridge deck pavement structure |
| US20170102304A1 (en) * | 2015-10-09 | 2017-04-13 | University Of Dammam | Non-destructive apparatus, system and method for determining pull-out capacity of anchor bolts |
| CN107014904A (en) * | 2017-05-22 | 2017-08-04 | 上海市建筑科学研究院 | A kind of detection method for being used to after concrete pour superposed surfaces quality |
| CN109060653A (en) * | 2018-09-03 | 2018-12-21 | 中国建筑科学研究院有限公司 | Method and device for detecting bonding strength of bonding surface of laminated member |
| CN110514663A (en) * | 2019-08-19 | 2019-11-29 | 上海市建筑科学研究院 | A kind of detection method of concrete column component top concrete defect |
-
2020
- 2020-07-02 CN CN202010628895.9A patent/CN111896627A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314003A (en) * | 2014-08-06 | 2015-01-28 | 重庆交通大学 | Long-life reinforcing mesh flexible fiber reinforced concrete bridge deck pavement structure |
| US20170102304A1 (en) * | 2015-10-09 | 2017-04-13 | University Of Dammam | Non-destructive apparatus, system and method for determining pull-out capacity of anchor bolts |
| CN107014904A (en) * | 2017-05-22 | 2017-08-04 | 上海市建筑科学研究院 | A kind of detection method for being used to after concrete pour superposed surfaces quality |
| CN109060653A (en) * | 2018-09-03 | 2018-12-21 | 中国建筑科学研究院有限公司 | Method and device for detecting bonding strength of bonding surface of laminated member |
| CN110514663A (en) * | 2019-08-19 | 2019-11-29 | 上海市建筑科学研究院 | A kind of detection method of concrete column component top concrete defect |
Non-Patent Citations (3)
| Title |
|---|
| 刘明辉等: "界面缺陷对钢管混凝土受弯构件抗弯性能影响研究", 《土木工程学报》 * |
| 郝兆峰等: "钢管混凝土构件不同缺陷率注浆补强前后承载能力试验研究", 《建筑结构学报》 * |
| 郝兆峰等: "钢管混凝土缺陷构件承载能力试验研究及数值分析计算", 《工业建筑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509503A (en) * | 2022-02-18 | 2022-05-17 | 成都升拓工程检测有限公司 | Method for determining position of grouting defect pore channel of prestressed concrete bridge |
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Application publication date: 20201106 |