CN1078285C - Controlled construction method and apparatus for rectifying inclined building - Google Patents
Controlled construction method and apparatus for rectifying inclined building Download PDFInfo
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- CN1078285C CN1078285C CN 97108993 CN97108993A CN1078285C CN 1078285 C CN1078285 C CN 1078285C CN 97108993 CN97108993 CN 97108993 CN 97108993 A CN97108993 A CN 97108993A CN 1078285 C CN1078285 C CN 1078285C
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 239000002689 soil Substances 0.000 claims abstract description 36
- 238000004062 sedimentation Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000012937 correction Methods 0.000 claims description 49
- 239000004567 concrete Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
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Abstract
The present invention relates to a controllable construction method and an apparatus for rectifying an inclined building. The controllable construction method comprises the following steps: a, measuring the inclined rate of a building; b, determining a rectifying goal value; c, arranging a pile position for supplying piles and determining the pile number, the pile length and the bearing capacity of a single pile; d, strengthening a foundation bearing platform, reserving a pile supplying hole, and burying anchor rod bolts; e, using a technique of an anchor rod jacked pile to supply the piles; f, installing a controllable rectifying device on one side with less sedimentation; g, digging soil on the side with less sedimentation to control rectification. The apparatus comprises anchor rod bolts 3, a pile sealing beam 4 and screw caps 5. The present invention is especially suitable for rectifying inclined buildings with poor foundation rigidity, such as independent column foundations, strip-shaped foundations, etc., and can make controllable operation for the total process of the rectification. The present invention has high rectifying precision.
Description
The present invention relates to a kind of method for processing foundation and device of inclined building, particularly relate to a kind of job practices and device that inclined building is carried out controlled correction.
Building is because during the differential settlement run-off the straight, can adopt the several different methods rectification of rectifying a deviation.Common method for correcting error has accumulation load method, soil digging method and disconnected post, disconnected wall method.They respectively have its pluses and minuses.Accumulation load method: need to carry out a large amount of preloadings, impel the foundation soil distortion, building is returned incline in the few side of sedimentation.Its advantage is that construction is simple, and shortcoming is only to be applicable to the rectifying of leaned building small-sized, that inclined degree is less, and requires the preloading thing to place the long period.This method often is difficult for implementing owing to be subjected to preloading place and preloading quantitative limitation, is used less.Soil digging method: need to carry out soil digging, destroy ground artificially consciously, make the few side ground of sedimentation quicken sedimentation, thereby reach the correction purpose in the few side of sedimentation.Its advantage is that rectifying effect is remarkable, uses more.Shortcoming is only to be applicable to the Deviation Correction Construction of basis for better buildings of soil rigidity such as case base, raft foundations, rectifies a deviation then inapplicable for the relatively poor inclined building of soil rigidities such as single footing or strip foundation.Disconnected post and disconnected wall rectifying by jack up method: few lateral column of sedimentation or body of wall disconnection are carried out jacking, reach the correction purpose.Owing to during jacking existing structure is applied a positive displacement, tend to the structure of building is caused damage, the Deviation Correction Construction risk is bigger, therefore should not promote employing.
In the prior art, United States Patent (USP) 2550987 discloses a kind of device and method of regulating foundation level absolute altitude and settling amount, this device is included in a both sides, hole and buries the anchor pole bolt underground, and stake is provided with the wedge shape insert in the hole, and top, stake hole is provided with the joist that links to each other with the anchor pole bolt.Its method is to come said apparatus is regulated by unscrewing nut, makes the foundation level absolute altitude obtain adjusting.This method and apparatus makes building can not get supporting and reinforcing owing to carry out piling in both sides, sedimentation position and handle, thus can't get rid of in the correction operation since building loading to the influence of ground, thereby have certain potential safety hazard.This method and apparatus is only applicable to the correction of small size, little load inclination building.In addition, this method and apparatus only can make the many sides of foundation settlement heighten, and the few side of sedimentation is reduced, thereby the construction limitation is big.
This shows, the present method for correcting error that uses, when the relatively poor inclined buildings of soil rigidity such as insulated column basis, strip foundation are carried out Deviation Correction Construction, perhaps be subjected to limitation of construction to be difficult for realizing, perhaps construction risk is big, it is wayward to rectify a deviation, and causes structural failure easily, even causes building collapsing.With the corresponding deviation correcting device of said method its limitation being arranged respectively also, mainly is to carry out controllable operating to Deviation Correction Construction, therefore is difficult to the rectifying effect that reaches desirable.
Purpose of the present invention is exactly for solving existing inclined building deviation rectification construction method and the existing all drawbacks of device, the building foundation is being carried out consolidation process and provide a kind of, guarantee under the preceding topic of structure and construction safety, overall process to Deviation Correction Construction is carried out controllable operating, with the controlled deviation rectification construction method of the inclined building that reaches higher correction precision and simple in structure, cost is low, easy to install, and can accomplish the controlled Deviation Correction Construction device of high controllability to the correction process.
Purpose of the present invention can realize by following technical solution:
Method of the present invention comprises:
A. before the construction structure of inclined building is checked, measured the slope of building;
B. according to the structure inspection result, determine whether structure needs reinforcement, need before Deviation Correction Construction, to reinforce, determine the correction desired value if need to reinforce;
C. according to load of buildings situation and geological mapping data, arrange piling stake position, determine stake number, the long and bearing capacity of single pile of stake;
D. bury settlement observation point underground, begin to carry out settlement observation and declivity observation, provide foundation for instructing the soil digging Deviation Correction Construction;
E. foundation platform is reinforced earlier to satisfy the piling requirement, is reserved the piling hole simultaneously, bury the anchor pole bolt underground in both sides, piling hole, anchor pole bolt quantity and diameter during by piling maximum pile driving pressure determine;
F. adopt the anchor jacked pile technology to carry out piling, piling is carried out as follows:
(1). at first carry out piling in the few side of sedimentation, stake wouldn't be sealed in the piling hole after the piling, and dolly should be put then near going back to the direction outside of inclining in pile body position in the hole during piling on the stake top;
(2). carry out piling in the many sides of sedimentation then, build concrete after the piling immediately and carry out hinged envelope stake, make stake can bear the superstructure load;
G. on few all the piling holes of a side of sedimentation, controlled Deviation Correction Construction device is installed;
H. horizontal soil digging under the few side group plinth cushion cap of sedimentation, on one side soil digging, adjust controlled Deviation Correction Construction device on one side, make inclined building obtain back inclining;
I. under settlement observation is instructed,, constantly adjust controlled Deviation Correction Construction device, building is constantly returned by the rigid body displacement mode incline, tilt constantly to obtain to correct, even foundation soil under the few side cushion cap of sedimentation can be emptied fully by continuous soil digging;
J. behind the rectifying of leaned building, when slope satisfies target call, stop soil digging, stop to unscrew fixedly girder steel nut, and use grout filling closely knit in the space that soil digging under the foundation platform produces;
K. after treating that cement paste solidifies in the soil digging space, one break time of interval will be sealed the dismounting of stake girder steel in batches, take out dolly, in the piling hole, build envelope stake concrete, after first hole envelope stake concrete reaches certain intensity, remove second batch of envelope stake girder steel again, build envelope stake concrete, till all envelope stake girder steels of dismounting are built the envelope concrete.
The adjustment of controlled Deviation Correction Construction device realizes by unscrewing nut 5.Because ground is damaged by soil digging under the few side group plinth cushion cap of sedimentation, when unscrewing nut, the few side of sedimentation is with downward sedimentation.
The speed of unscrewing fixed sealing stake girder steel nut is about every day 5mm.
Controlled Deviation Correction Construction device of the present invention is shown in Fig. 1～3, it comprises the anchor pole bolt that is embedded in both sides, piling hole, place dolly in the piling hole, place top, piling hole and the envelope stake beam that links to each other with the anchor pole bolt and is connected the nut of an envelope beam and anchor pole bolt, it is characterized in that envelope stake beam is a steel design, it is made up of longeron and two crossbeams that are fixed in the longeron both ends, the both ends of every crossbeam have a U-lag, envelope stake beam is enclosed within on the anchor bolt by U-lag, and passes through fixed by nut.
The present invention has overcome the deficiency of existing inclined building method for correcting error, has solved the difficult problem that relatively poor inclined buildings of soil rigidity such as insulated column basis, strip foundation carry out Deviation Correction Construction effectively.Deviation rectification construction method provided by the invention and device can be under the guidances of settlement observation data, overall process to Deviation Correction Construction is carried out controllable operating, structure and construction safety have been guaranteed, and can also reach higher correction precision, basically what degree what degree of just can rectifying a deviation of accomplishing to rectify a deviation, and can not occur rectifying a deviation not enough or the excessive situation of rectifying a deviation, its scope of application is also wider, be not only applicable to the Deviation Correction Construction of the relatively poor building of soil rigidity, and be applicable to the Deviation Correction Construction of the better building of soil rigidity.Controlled Deviation Correction Construction device of the present invention has simple in structure, and cost is low, installs and convenience operation.
Fig. 1 is a controlled Deviation Correction Construction apparatus structure vertical view of the present invention.
Fig. 2 is controlled Deviation Correction Construction apparatus structure front view.
Fig. 3 is an envelope stake beam schematic perspective view.
Below in conjunction with accompanying drawing in detail embodiments of the invention are described in detail.
Controlled deviation rectification construction method of the present invention now is described below in conjunction with a construction embodiment shown in Fig. 1～2:
Baoan District, Shenzhen village is at the other four floor dormitory building (1# building, 2# building) of having built two same size types of this village's one highway, long 42m, wide 7.7m, high 13m. bottom is a frame construction, two to four layers is brick mix structure, and steel bar concrete insulated column basis is adopted on the basis, and there are 26 single footings in every building.Owing to plan to build the place and do not carry out engineering geologic investigation originally, after dormitory building goes into operation and builds as a result, find that when excavation pit mucky soil appears in the about 1.5m of underground depths, taked the mud that 1.7m under the basis is thick to excavate for this reason, carried out replacement Treatment with the stone flour of same thickness. after building up and be delivered for use, the 2nd buildings find soon that building has produced differential settlement.According to the inclination situation of two dormitory buildings, carried out correcting and then reinforcing with the present invention.
Warp is to above-mentioned two inclined building structure inspections, and the 1# building tilts from east to west, and average gradient reaches 26.4%, and the 2# building tilts from west to east, and average gradient is 10.5%
Because former basic concrete label lower (about c10) can not satisfy the correcting and then reinforcing requirement, need at first underpinning to be carried out on the basis.For increasing the globality on basis, guarantee the safety of building, 13 single footings of the soil digging side in 2# building are being fused when underpining, form the strip foundation shape.
According to the inclined building situation.Determine that the correcting and then reinforcing desired value is:
1, after two buildings pass through correcting and then reinforcing, fore-and-aft tilt rate≤3 ‰ of building.
2, through behind the correcting and then reinforcing, sedimentation can tend towards stability.
According to the load of buildings situation.Determine 76 of 1# building pilings, 63 of 2# building pilings, piling adopts 280 * 280mm
2Section concrete square brick, stake is about 12m.The design bearing capacity of single pile is 450KN.
Around the building that tilts, bury settlement observation point underground before the construction, carry out settlement observation, metrical information is in time fed back in the correcting and then reinforcing construction go, provide foundation for instructing Deviation Correction Construction with high-precision level.
Before the Deviation Correction Construction, adopt the anchor jacked pile technology to carry out piling.Reserve piling hole 1 simultaneously in that foundation platform is reinforced, bury 4 M30 anchor pole bolts 3 underground in each both sides, piling hole.
During the piling operation, carry out piling in the few side of sedimentation earlier, stake wouldn't be sealed in the stake hole after the piling, seals stake after a while again, to reach the adjustment differential settlement, reduces the inclination purpose.During piling, dolly 2 is put then near going back to the direction outside of inclining in pile body position in the hole on the stake top.Build concrete immediately after the many side stakes of sedimentation have been mended and carry out hinged envelope stake, make and can bear upper load.
After the piling, on few all the piling holes of a side of sedimentation, controlled Deviation Correction Construction device is installed, this apparatus structure shown in Fig. 1～3, the nut 5 that comprises the anchor pole bolt 3 that is embedded in 1 both sides, piling hole, places dolly 2 in the piling hole, places top, piling hole and the envelope stake beam 4 that links to each other with anchor pole bolt 3 and is connected an envelope beam and anchor pole bolt.
After installing controlled deviation correcting device, can carry out controlled Deviation Correction Construction.The artificial horizontal soil digging mode of substrate is adopted in correction.At first under the few side group plinth cushion cap of sedimentation, carry out horizontal soil digging, destroy ground consciously, building is returned to the soil digging side incline.Soil digging is adjusted controlled Deviation Correction Construction device by the nut 5 of constantly unscrewing envelope stake girder steel simultaneously, makes basis sedimentation downwards, and inclined building is constantly returned by rigid body displacement incline, tilt constantly to obtain to correct.
During the Deviation Correction Construction, should control the rate of settling of soil digging side, the speed that both will unscrew nut 5 is controlled at about 5mm/day.Must carry out settlement observation every day during this period, metrical information in time be fed back in the correcting and then reinforcing construction go, make Deviation Correction Construction become controllable operating.
After Deviation Correction Construction finishes, through measuring:
Average gradient after the correction of 1# building is 1.14 ‰;
Average gradient after the correction of 2# building is 1.36 ‰.After showing correction, slope has satisfied code requirement, and sedimentation tends towards stability.
After the slope of correction back building meets the demands, that the space that soil digging produces is closely knit with grout filling.After treating that cement paste solidifies, certain interval of time will seal the dismounting of stake beam in batches, take out dolly, build an envelope stake concrete in the piling hole.
Claims (2)
1, the controlled deviation rectification construction method of a kind of inclined building is characterized in that this method comprises:
A. before the construction structure of inclined building is checked, measured the slope of building;
B. according to the structure inspection result, determine whether structure needs reinforcement, need before Deviation Correction Construction, to reinforce, determine the correction desired value if need to reinforce;
C. according to load of buildings situation and geological mapping data, arrange piling stake position, determine stake number, the long and bearing capacity of single pile of stake;
D. bury settlement observation point underground, begin to carry out settlement observation and declivity observation, provide foundation for instructing the soil digging Deviation Correction Construction;
E. foundation platform is reinforced earlier to satisfy the piling requirement, is reserved the piling hole simultaneously, bury the anchor pole bolt underground in both sides, piling hole, anchor pole bolt quantity and diameter during by piling maximum pile driving pressure determine;
F. adopt the anchor jacked pile technology to carry out piling;
G. on few all the piling holes of a side of sedimentation, controlled Deviation Correction Construction device is installed;
H. horizontal soil digging under the few side group plinth cushion cap of sedimentation, on one side soil digging, adjust controlled Deviation Correction Construction device on one side, make inclined building obtain back inclining;
I. under settlement observation is instructed,, constantly adjust controlled Deviation Correction Construction device, building is constantly returned by the rigid body displacement mode incline, tilt constantly to obtain to correct, even foundation soil under the few side cushion cap of sedimentation can be emptied fully by continuous soil digging;
J. behind the rectifying of leaned building, when slope satisfies target call, stop soil digging, stop to unscrew fixedly girder steel nut, and use grout filling closely knit in the space that soil digging under the foundation platform produces;
K. after treating that cement paste solidifies in the soil digging space, one break time of interval will be sealed the dismounting of stake girder steel in batches, take out dolly, in the piling hole, build envelope stake concrete, after first hole envelope stake concrete reaches certain intensity, remove second batch of envelope stake girder steel again, build envelope stake concrete, till all envelope stake girder steels of dismounting are built the envelope concrete;
The described piling of above-mentioned steps f is carried out as follows:
(1). at first carry out piling in the few side of sedimentation, stake wouldn't be sealed in the piling hole after the piling, and dolly should be put then near going back to the direction outside of inclining in pile body position in the hole during piling on the stake top,
(2). carry out piling in the many sides of sedimentation then, build concrete after the piling immediately and carry out hinged envelope stake, make stake can bear the superstructure load.
2, the controlled Deviation Correction Construction device of a kind of inclined building, comprise the anchor pole bolt (3) that is embedded in both sides, piling hole (1), place the dolly (2) in the piling hole, place top, piling hole and the envelope stake beam (4) that links to each other with anchor pole bolt (3) and be connected the nut (5) that seals stake beam and anchor pole bolt, it is characterized in that, described envelope stake beam (4) is a steel design, it is made up of longeron (41) and two crossbeams (42) that are fixed in the longeron both ends, the both ends of every crossbeam have a U-lag (421), envelope stake beam is enclosed within on the anchor bolt (3) by U-lag, and fixing by nut (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108993 CN1078285C (en) | 1997-07-23 | 1997-07-23 | Controlled construction method and apparatus for rectifying inclined building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108993 CN1078285C (en) | 1997-07-23 | 1997-07-23 | Controlled construction method and apparatus for rectifying inclined building |
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| CN1177048A CN1177048A (en) | 1998-03-25 |
| CN1078285C true CN1078285C (en) | 2002-01-23 |
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| CN 97108993 Expired - Fee Related CN1078285C (en) | 1997-07-23 | 1997-07-23 | Controlled construction method and apparatus for rectifying inclined building |
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| CN1836075B (en) * | 2003-08-11 | 2010-06-16 | 王志财 | Bearing pile system and method of installing the bearing pile system |
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-
1997
- 1997-07-23 CN CN 97108993 patent/CN1078285C/en not_active Expired - Fee Related
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| CN1836075B (en) * | 2003-08-11 | 2010-06-16 | 王志财 | Bearing pile system and method of installing the bearing pile system |
| CN106522292A (en) * | 2016-09-20 | 2017-03-22 | 中科院广州化灌工程有限公司 | Grouting combined prestressed anchor rod static pressure pile rectification and reinforcement method |
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| CN1177048A (en) | 1998-03-25 |
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