CN203905295U - Sea-sand recycled concrete component provided with injection-molded steel pipe - Google Patents

Abstract

The utility model relates to an injection molded steel pipe sea sand recycled concrete column, which comprises an injection molded steel pipe filled with sea sand recycled concrete, and the two ends of the injection molded steel pipe are provided with end caps. The injection molded steel pipe includes a steel pipe and a plastic layer, and the plastic layer is arranged on the inner wall of the steel pipe. The inner surface of the injection-molded steel pipe has good elastic-plasticity and strength, as well as anti-corrosion performance. The sea sand is directly applied to the recycled concrete of the injection-molded steel pipe, without the need to process the sea sand, and the sea-sand recycled concrete is poured into the injection-molded steel pipe to form an injection-molded steel pipe recycled concrete column, and then the two ends of the injection-molded steel pipe are sealed with plastic gaskets. The sealing cap seals the steel pipe. Injection-molded steel pipes provide tightening force for recycled concrete, making sea-sand recycled concrete tightly bonded; in addition, the anti-corrosion layer in injection-molded steel pipes has good elasticity, plasticity and strength, and its flexural and compressive strength is 3.5 times that of ordinary steel pipes, which can play a role in anti-corrosion The isolation effect can also make the injection-molded steel pipe and recycled concrete more closely combined, and the functional effect is better.

Description

Injection-molded steel pipe sea sand recycled concrete components

technical field

The utility model relates to an injection molded steel pipe sea sand recycled concrete component, in particular to an injection molded steel pipe sea sand recycled concrete column filled with sea sand recycled concrete.

Background technique

my country's industrialization and its construction manufacturing industry are still in a development stage of extensive raw resources and energy consumption. The construction process requires a lot of river sand and also produces a lot of construction waste. How to use waste concrete to improve its strength? , making the use of renewable resources, replacing river sand with sea sand, and mass-manufacturing industrialized building components have always been the focus of people's research. Steel tube recycled concrete columns have broad application prospects in industry and construction. Because sea sand is corrosive to steel, it is often necessary to pre-treat sea sand to meet the requirements of building functions. The traditional treatment method of sea sand wastes a lot of manpower and material resources, and the cost is high. When using untreated raw sea sand concrete to form steel pipe concrete columns in the prior art, FRP or river sand is set between the inner wall of the steel pipe and sea sand as an isolation layer for steel pipe anticorrosion, and then sea sand is filled. Although this method can directly use sea sand, the special use of FRP structure isolation scheme will increase the various costs accordingly, while the river sand isolation scheme is used, and the two ends of the steel pipe need to be filled with good quality river sand concrete first, and then welded Machines and technicians weld both ends of the steel cover. The manufacturing process is complicated, the quality is difficult to control, and it is easy to mix a small amount of sea and river sand together, which will corrode the steel pipe. The strength of this scheme is not high.

Contents of the invention

In order to solve the problems in the prior art, the utility model provides an injection-molded steel pipe sea sand recycled concrete component. The utility model effectively utilizes sea sand and recycled concrete, fully saves energy and utilizes renewable resources, and can realize the strategic goals of green manufacturing and sustainable development.

The technical solution of the utility model is: the injection-molded steel pipe sea sand recycled concrete column of the utility model includes an injection-molded steel pipe, the injection-molded steel pipe is filled with sea-sand recycled concrete, and end caps are arranged at both ends of the injection-molded steel pipe.

The injection-molded steel pipe includes a steel pipe and a plastic layer, and the plastic layer is arranged on the inner wall of the steel pipe.

The sea sand recycled concrete includes sea sand, river sand, recycled concrete, and ordinary concrete, and the sea sand, river sand, recycled concrete, and ordinary concrete are mixed evenly.

The beneficial effect of the utility model is that: the utility model is filled with recycled sea sand concrete in the injection molding steel pipe, and the two ends of the injection molding steel pipe are provided with end caps, wherein the injection molding steel pipe and the end caps can realize the manufacturing of building parts in industrialized batches, and the cost is low. Low, the process can be standardized and simplified, the quality is well controlled, and the inner surface of the injection-molded steel pipe has good elastic-plasticity and strength, as well as anti-corrosion performance. The sea sand is directly applied to the recycled concrete of the injection-molded steel pipe, without the need to process the sea sand, and the sea-sand recycled concrete is poured into the injection-molded steel pipe to form an injection-molded steel pipe recycled concrete column, and then the two ends of the injection-molded steel pipe are sealed with plastic gaskets. The sealing cap seals the steel pipe. In this way, on the one hand, the injection-molded steel pipe provides the tightening force for the recycled concrete, so that the sea-sand recycled concrete is tightly bonded; on the other hand, the anti-corrosion layer in the injection-molded steel pipe has good elasticity, plasticity and strength, and its flexural and compressive strength is 3.5 times that of ordinary steel pipes. times, it can not only play the role of anti-corrosion isolation, but also make the injection-molded steel pipe and recycled concrete more closely combined, and the function effect is better. The utility model effectively utilizes sea sand and recycled concrete, fully saves energy and utilizes renewable resources, and realizes the strategic goals of green manufacturing and sustainable development. The use of sea sand recycled concrete columns with built-in reinforcement members in injection-molded steel pipes can directly replace traditional steel pipes and reinforced concrete.

Description of drawings

Fig. 1 is the schematic cross-sectional view of the recycled concrete component of injection-molded steel pipe sea sand of the utility model,

Fig. 2 is a schematic view of the injection molded steel pipe and its sealing cover assembly with plastic gaskets of the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example:

Below in conjunction with accompanying drawing 1 explanation and specific embodiment the utility model is further described.

As shown in Fig. 1, the utility model is further described below in conjunction with accompanying drawing 1 description and specific embodiment.

As shown in FIG. 1 , the injection molded steel pipe sea sand recycled concrete column member includes an injection molded steel pipe, wherein the injection molded steel pipe is filled with sea sand recycled concrete 4 , and end caps 5 are provided at both ends of the injection molded steel pipe.

In this embodiment, the injection-molded steel pipe includes a steel pipe 1 and a plastic layer 2 , and the plastic layer 2 is arranged on the inner wall of the steel pipe 1 .

In this embodiment, the end caps 5 are fixed on both ends of the injection-molded steel pipe by threads, or the end caps 5 are fixed on both ends of the injection-molded steel pipe by connecting pieces 6 . In this embodiment, the connecting member 6 is a screw.

In order to further ensure the tightness, a gasket 7 is installed on the contact surface between the end cap 5 and the injection molded steel pipe. In this embodiment, the plastic gasket 7 is a plastic gasket.

In this embodiment, the sea sand recycled concrete 4 includes sea sand, river sand, recycled concrete, and ordinary concrete, and the sea sand, river sand, recycled concrete, and ordinary concrete are mixed evenly. The method of directly applying the sea sand in the injection-molded steel pipe recycled concrete member of the utility model is to make the sea sand recycled concrete from the sea sand without chemical treatment such as desalination and the recycled concrete, and pour the sea sand recycled concrete into the injection molding with an anti-corrosion layer inside. Inside the steel pipe.

In this embodiment, the recycled concrete refers to the waste concrete blocks that are crushed, cleaned, and graded, and then mixed with grading in a certain proportion to partially or completely replace natural aggregates such as sand and gravel (mainly coarse aggregates). Then add cement, water, etc. to form new concrete. Wherein, there is no need to process the sea sand, and the sea sand recycled concrete is poured into the injection-molded steel pipe to form the injection-molded steel pipe recycled concrete column. In this embodiment, 70% recycled concrete is used, and 30% concrete is comprehensively formulated into a new mixed recycled concrete.

In this embodiment, in order to further strengthen the strength of the steel pipe 1 , the inner wall of the steel pipe 1 is further provided with reinforcing steel wires 3 .

The outer contour shape of the steel pipe 1 is circular and rectangular. In this embodiment, the outer contour of the steel pipe 1 is circular, and the steel pipe 1 is placed in a tool, and reinforcing steel wires 3 are equiangularly installed at two places on the inner surface of the same section of the steel pipe 1 close to the upper and lower end faces. In the example, the reinforced steel wire 3 is a thin steel wire, and then the inner surface of the steel pipe 1 is injected with a plastic layer 2, and the plastic layer 2 that can prevent chemical corrosion such as salt is injected and melted on the inner wall of the steel pipe to form a plastic layer with steel wires, and It forms a whole with the steel pipe, that is, the injection-molded steel pipe. This kind of injection-molded steel pipe that can be mass-produced industrially is not expensive. While improving the strength and plasticity, it forms an anti-corrosion layer, which can be directly filled with untreated Raw sea sand recycled concrete columns.

In addition, in order to prevent the steel pipe 1 from being corroded by the recycled sea sand concrete 4 , an antirust agent is added to the recycled sea sand concrete 4 .

When the utility model is manufactured, the inner wall of the steel pipe 1 is injected with a melted plastic layer 2 and short steel wires 3 for strengthening the structure of the plastic layer near the upper and lower parts, and poured in the hollow area surrounded by the injection molded melted plastic layer There is sea sand recycled concrete 4 made of original untreated sea sand; sealing caps 8 are arranged at both ends of the injection-molded steel pipe, and the sealing caps 8 are ordinary carbon steel materials.

The injection molded steel pipe of the utility model can be mass-produced in the manufacturing plant according to the requirements. The inner wall of the steel pipe is injected with a melted plastic layer of about 0.5-1.4mm. The size of the steel pipe is D×L×t (diameter×length×thickness). According to the functional requirements, it can be Design its structural size according to functional requirements. In this application, the preferred size is =180×500×6mm, and the bottom end uses a sealing cover assembly with a size of (diameter×length) 180mm×5mm.

The built-in FRP steel reinforcement member described in the utility model can be mass-produced in a manufacturing factory according to requirements. The FRP steel reinforcement member can be set in the center of the sea sand recycled concrete. Improving the mechanical properties of steel pipe sea sand recycled concrete.

After making the injection-molded steel pipes, the sea sand recycled concrete is poured directly into the injection-molded steel pipes on site. After the concrete filled steel pipe is poured, there will be shrinkage within the error range of about 2mm. At this time, mortar can be used to smooth it and wait for it to solidify, and then use the sealing cover assembly to assemble and seal the two ends of the injection molded steel pipe.

Under the action of axial pressure on the injection-molded steel pipe sea sand recycled concrete member, the injection-molded steel pipe provides a circular restraint effect on the internal recycled concrete, so that the core concrete is in a state of multi-faceted compression, which can greatly improve its compressive and flexural strength, and improve its resistance. Corrosion ability, the interior of the steel pipe is filled with recycled concrete to avoid the instability of the steel pipe, thereby improving the overall mechanical properties of the component.

The utility model provides an injection-molded steel pipe sea sand recycled concrete component, which has the following advantages:

1) Use original sea sand to replace the river sand that is short of resources, saving energy and resources, and reducing costs.

2) Recycled concrete is used together with sea sand to make sea sand concrete, which saves energy and resources, and reduces costs.

3) Due to the molten plastic layer injected into the inner wall of the steel pipe, the composition of evenly distributed thin steel wires installed on the plastic layer can improve the strength of the plastic layer, and the core recycled concrete is inside the injection molded steel pipe, so that the chlorine ions in the sea sand recycled concrete and the recycled concrete The corrosion of steel pipes is limited by a small amount of chemical components, and the application of injection-molded steel pipes improves its compressive strength, flexural strength, and corrosion resistance.

The chemical composition of untreated original sea sand and waste concrete injected into the traditional steel pipe will cause the volume expansion of the corrosion product of the steel pipe to cause concrete cracking, accelerate the corrosion of steel, and cause the reinforced concrete structure to be destroyed soon. Therefore, the molten plastic layer is injected on the inner wall, and thin steel wires are installed, so that the bonding strength between the plastic layer and the steel is improved, and it is not easy to fall off and deform.

4) The assembled sealing cover assembly of the plastic gasket is installed on both ends of the steel pipe to play a strict sealing role. The structural advantage of the sealing cover assembly of the plastic gasket can be made as a standard part, which can be installed on site, which provides design and manufacturing advantages and processing cost advantages for the mass production of building components. The elasticity and plasticity of the built-in plastic gasket, on the one hand, play a role It has a buffering effect on the axial pressure deformation of the steel pipe, and on the other hand plays an anti-corrosion effect. Compared with the traditional manual welding sealing cover assembly, the welding equipment and welding technicians are reduced, and the cost is also greatly reduced.

The injection-molded steel pipe of the sealing cover assembly of the plastic gasket is different from ordinary reinforced concrete in that the two ends of the concrete in the injection-molded steel pipe are installed with combined seals, and the interior is in a sealed environment, and the corrosion is limited, while the expansion of the internal material It can also have a favorable effect on the bonding between the steel pipe and the core sea sand recycled concrete.

5) Injection-molded steel pipe sea sand recycled concrete is widely used, mainly for compression components, such as single-layer or multi-layer industrial factory building columns, prefabricated components for power transmission and transformation, high-rise or super high-rise civil building columns, etc., and can also be used as bending components. Such as arch ribs in highways or urban bridges.

The utility model provides a kind of injection-molded steel pipe sea sand recycled concrete widely used, mainly used for compression components, such as single-layer or multi-layer industrial factory building columns, prefabricated components for power transmission and transformation, high-rise civil building columns, etc., and can also be used for bending Components, such as arch ribs in highways or urban bridges, etc.

Claims (7)

1. An injection molded steel pipe sea sand recycled concrete column member, comprising an injection molded steel pipe, is characterized in that the injection molded steel pipe is filled with sea sand recycled concrete, and the two ends of the injection molded steel pipe are provided with end caps; the injection molded steel pipe includes a steel pipe , a plastic layer, the plastic layer is arranged on the inner wall of the steel pipe. 2. The injection-molded steel pipe sea sand recycled concrete column member according to claim 1, characterized in that the end caps are fixed on both ends of the injection-molded steel pipe by threads, or the end caps are fixed on both ends of the injection-molded steel pipe by connectors. 3. The injection molded steel pipe sea sand recycled concrete column member according to claim 1, characterized in that a gasket is also installed on the contact surface between the end cover and the injection molded steel pipe. 4. The injection molded steel pipe sea sand recycled concrete column member according to claim 1, characterized in that: the inner wall of the steel pipe 1 is also provided with reinforcing steel wires. 5. The injection-molded steel pipe sea sand recycled concrete column member according to any one of claims 1 to 4, wherein the sea sand recycled concrete includes sea sand, river sand, recycled concrete, ordinary concrete, sea sand, river sand Sand, recycled concrete, and ordinary concrete are mixed evenly. 6. The injection molded steel pipe sea sand recycled concrete column member according to claim 5, characterized in that: the outer contour shape of the steel pipe is circular or rectangular. 7. The injection molded steel pipe sea sand recycled concrete column member according to claim 5, characterized in that the sea sand recycled concrete is also added with an antirust agent.