CN114016516A - Concrete-steel structure mixed angle brace construction method - Google Patents
Concrete-steel structure mixed angle brace construction method Download PDFInfo
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- CN114016516A CN114016516A CN202111316108.8A CN202111316108A CN114016516A CN 114016516 A CN114016516 A CN 114016516A CN 202111316108 A CN202111316108 A CN 202111316108A CN 114016516 A CN114016516 A CN 114016516A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The invention discloses a concrete-steel structure mixed angle brace construction method, which comprises the following steps in sequence: forming the anti-slide pile and the crown beam: pouring anti-slide piles and crown beams on the side soil layer of the road side of the public line and the side soil layer of the subway line, wherein the crown beams are formed on the tops of the anti-slide piles; forming an early warning layer: and forming an early warning layer capable of observing the support deformation of the support structure on the anti-slide pile and the crown beam. After vehicles running on the road side soil layer of the public road and the road side soil layer of the subway line enable the supporting structure to support deformation, due to the fact that the early warning layer formed by pouring steel bars and concrete exists, the concrete on the early warning layer can crack and can be observed visually and quickly through naked eyes, the problem that deformation cannot be observed visually at present is solved, and the effect of early warning in advance is achieved.
Description
Technical Field
The invention relates to a concrete-steel structure mixed angle brace construction method, and belongs to the technical field of building construction.
Background
When building high-rise building, need carry out deep digging to the building foundation, though can make high-rise building obtain good ground after deep digging, nevertheless also can make deep basal pit foundation side slope appear the danger of collapsing, especially the deep basal pit appears with triangle-shaped, and when both sides limit corresponds for highway and subway line, it is especially important to the protection that deep basal pit side slope collapses.
In order to effectively protect the collapse of the side slope at the triangular position of the deep foundation pit, the angle supporting layer and the upright post are used for effectively protecting the side slope at the triangular position of the deep foundation pit by using the angle supporting layer and the upright post of the deep and large foundation pit horizontal shear-resistant structure with the Chinese patent publication No. CN 103967018B.
Disclosure of Invention
In order to solve the technical problem, the invention provides a concrete-steel structure mixed angle brace construction method.
The invention is realized by the following technical scheme.
The invention provides a concrete-steel structure mixed angle brace construction method, which comprises the following steps in sequence:
forming the anti-slide pile and the crown beam: pouring anti-slide piles and crown beams on the side soil layer of the road side of the public line and the side soil layer of the subway line, wherein the crown beams are formed on the tops of the anti-slide piles;
forming an early warning layer: and forming an early warning layer capable of observing the support deformation of the support structure on the anti-slide pile and the crown beam.
The early warning layer is formed as follows: digging up dregs to elevation that the foundation ditch is expected to form early warning layer space, the supporting beam section, early warning waist rail, ox horn roof beam use reinforcing bar and mix earth and pour the shaping and form the early warning layer, reinforcing bar and mix earth pour the shaping structure for can observing the supporting structure and take place the early warning layer that supports deformation, the degree of depth that anti-slide pile and crown beam were implanted to early warning waist rail, ox horn roof beam is not less than thirty centimetres.
And between the step of forming the anti-slide pile and the crown beam and the step of forming the early warning layer, the step of forming the upright post pile is further included.
The forming steps of the upright post pile are as follows: and forming the upright post pile in the middle of the third edge of the triangular pre-excavation forming of the deep foundation pit.
After the upright post pile forming step, forming a support wale of a support layer, wherein the support wale of the support layer is formed by: continuously excavating the foundation pit to an elevation, wherein the foundation pit is expected to form slag soil in a supporting layer space, forming a supporting waist beam of the supporting layer on the anti-slide pile, and embedding an embedded part in the supporting waist beam; repeating the step of forming the supporting layer until the supporting wale of the other supporting layer below is formed;
after the step of forming the supporting wale of the supporting layer, the method further comprises a supporting layer building, wherein the supporting layer building is as follows: each supporting layer is provided with three supporting layer supporting beams; the two supporting layer supporting beams on the long side can slide on the supporting frame, the supporting frame is welded on the upright post pile, and the support of the upright post pile reduces the winding degree of the supporting layer supporting beams; supporting layer supporting beam one end is connected with the built-in fitting through the head of living, and the other end is direct to be welded with the built-in fitting, and the basic part and the built-in fitting welding of the head of living, basic part and the straight section of thick bamboo section sliding fit of flange, flange are connected with supporting layer supporting beam through the bolt, and two oblique building blocks are installed in the through-hole inclined plane that sets up on the basic part through running through.
After the supporting layer is built, prestress application is further included, and the prestress application is as follows: exerting pressure on the flange, sliding on the base part to the flange, knocking the two inclined building blocks to match the inclination, enabling the supporting layer supporting beams to reach a pre-tightening stable supporting state, welding and fixing the base part and the flange straight cylinder section, and fixing the two supporting layer supporting beams on the long edge on the supporting frame by welding the I-shaped beam on the supporting frame after each supporting layer is in the same state.
The invention has the beneficial effects that: after vehicles running on the road side soil layer of the public road and the road side soil layer of the subway line enable the supporting structure to support deformation, due to the fact that the early warning layer formed by pouring steel bars and concrete exists, the concrete on the early warning layer can crack and can be observed visually and quickly through naked eyes, the problem that deformation cannot be observed visually at present is solved, and the effect of early warning in advance is achieved.
Drawings
FIG. 1 is a schematic structural view after the construction and molding of the present invention;
FIG. 2 is a schematic top view of the support layer and the anti-slide pile after construction and forming according to the present invention;
FIG. 3 is a schematic diagram of the construction of the articulating head of the present invention;
FIG. 4 is a schematic view of the support frame of the present invention mounted on a support waist;
in the figure: 1-road side soil layer of the highway; 2-side soil layer of subway line; 3-anti-slide pile; 4-a crown beam; 5-early warning layer; 51-a support beam section; 52-early warning waist rail; 53-ox horn beam; 6-a support layer; 61-supporting wale; 62-embedded parts; 63-living head; 631-a base member; 632-a flange; 633-oblique building blocks; 64-supporting layer support beams; 7-a support frame; 8-vertical column pile.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
See fig. 1-4.
The invention relates to a concrete-steel structure mixed angle brace construction method, which comprises the following steps in sequence:
forming the anti-slide pile and the crown beam: a plurality of pile holes are respectively drilled in a road side soil layer 1 of a public road and a road side soil layer 2 of a subway, anti-slide piles 3 and crown beams 4 are poured in the pile holes, and the crown beams 4 are formed on the tops of the anti-slide piles 3.
Forming the upright post pile: digging a pile hole in the middle of the third edge of the triangular pre-digging forming of the deep foundation pit, placing a steel pipe and a reinforcement cage formed by the upright post pile 8 into the pile hole, pouring concrete, and filling a gap between the upright post pile 8 and the pile hole with fine sand after forming.
Forming an early warning layer: excavating the slag soil predicted to form the space of the early warning layer 5 of the foundation pit to an elevation, pre-supporting a supporting beam section 51, an early warning waist beam 52 and a ox horn beam 53 forming space of the early warning layer 5 on the top of a vertical column pile 8 by using a template, then pouring and forming the supporting beam section 51, the early warning waist beam 52 and the ox horn beam 53 which are extended out of the early warning layer 5 by using reinforcing steel bars and concrete, connecting the top of the vertical column pile 8 with the middle part of the early warning layer 5 through bolts, and implanting anti-slide piles 3 and crown beams 4 into the early warning waist beam 52 and the ox horn beam 53 with the depth not less than thirty centimeters;
after vehicles running on the soil layer 1 on the side of the highway line and the soil layer 2 on the side of the subway line enable the supporting structure to be supported and deformed, the early warning layer 5 formed by pouring steel bars and concrete exists, the concrete on the early warning layer 5 can crack and can be visually and quickly observed through naked eyes, the problem that deformation cannot be visually observed at present is solved, and the early warning effect is achieved.
Forming a support waist beam of the support layer: removing the template of the early warning layer 5, continuously excavating foundation pits to estimate the slag soil in the space of the supporting layer 6 to reach the elevation, forming a supporting waist beam 61 of the supporting layer 6 on the anti-slide pile 3 by using concrete, and pre-burying an upper embedded part 62 on the supporting waist beam 61; repeating the step of forming the supporting layer until the supporting wale of the other supporting layer below is formed;
building a supporting layer: a plurality of steel pipes are welded on site to form supporting layer supporting beams 64 of the supporting layer 6, and each supporting layer is provided with three supporting layer supporting beams 64; the two support layer support beams 64 on the long side can slide on the support frame 7 and are welded and reinforced with each other by using a connecting piece, the support frame 7 is welded on the upright post 8, and the support of the upright post 8 reduces the winding degree of the support layer support beams 64; two ends of the supporting layer supporting beam 64 are directly welded with the embedded part 62; or one end of the supporting layer supporting beam 64 is connected with the embedded part 62 through the movable head 63, the other end of the supporting layer supporting beam 64 is directly welded with the embedded part 62, at the moment, the base part 631 of the movable head 63 is welded with the embedded part 62, the base part 631 is in straight cylinder section sliding fit with the flange 632, the flange 632 is connected with the supporting layer supporting beam 64 through bolts, and two inclined building blocks 633 are installed through the inclined plane of the through hole formed in the base part 631.
Applying prestress: apply pressure to flange 632 through using hydraulic equipment, slide on basic piece 631 to flange 632, strike two oblique building block 633 cooperation slopes for supporting layer supporting beam 64 reaches pretension steady support state, with basic piece 631 and the straight section of cylinder welded fastening of flange 632, after all being in the same state to every supporting layer, fix two supporting layer supporting beam 64 on long limit on support frame 7 through welding the I-beam at support frame 7.
Claims (10)
1. The concrete-steel structure mixed angle brace construction method is characterized by comprising the following steps of:
forming the anti-slide pile and the crown beam: pouring anti-slide piles (3) and crown beams (4) on the side of a road side soil layer (1) of a public road and a side soil layer (2) of a subway line, wherein the crown beams (4) are formed on the tops of the anti-slide piles (3);
forming an early warning layer: and forming an early warning layer capable of observing the support deformation of the support structure on the anti-slide pile (3) and the crown beam (4).
2. The concrete-steel structure hybrid gusset construction method according to claim 1, wherein the early warning layer is formed by: dig the dregs to the elevation that the foundation ditch is expected to form early warning layer (5) space, supporting beam section (51), early warning waist rail (52), ox horn roof beam (53) use reinforcing bar and concrete to pour the shaping and form early warning layer (5), reinforcing bar and concrete pour the shaping structure and for observing that supporting structure takes place to support the early warning layer of deformation, early warning waist rail (52), the degree of depth that anti-slide pile (3) and crown beam (4) were implanted in ox horn roof beam (53) is not less than thirty centimetres.
3. The concrete-steel structure hybrid corner brace construction method according to claim 1, further comprising the step of forming a stud pile between the step of forming the slide-resistant pile and the crown beam to the step of forming the early warning layer.
4. The concrete-steel structure hybrid gusset construction method of claim 2, wherein the post pile is formed by the steps of: and forming the upright post pile (8) in the middle of the third edge of the triangular pre-excavation forming of the deep foundation pit.
5. The concrete-steel structure hybrid gusset construction method as set forth in claim 4, wherein: and after the upright post pile forming step, forming a support wale further comprising a support layer.
6. The concrete-steel structure hybrid corner brace construction method of claim 5, wherein the support wale of the support layer is formed as: continuously excavating the residual soil in the space of the support layer (6) which is expected to be formed in the foundation pit to the elevation, forming a support waist beam (61) of the support layer (6) on the anti-slide pile (3), and pre-burying an embedded part (62) on the support waist beam (61); and repeating the step of forming the supporting layer to form the supporting wale of other supporting layers below.
7. The concrete-steel structure hybrid corner brace construction method according to claim 5, further comprising a support layer building after the support wale forming step of the support layer.
8. The concrete-steel structure hybrid gusset construction method according to claim 7, wherein the support layer is constructed by: three support layer support beams (64) per support layer; two supporting layer supporting beams (64) on the long side can slide on the supporting frame (7), and the supporting frame (7) is welded on the upright post pile (8); one end of a supporting layer supporting beam (64) is connected with an embedded part (62) through a movable joint (63), the other end of the supporting layer supporting beam is directly welded with the embedded part (62), a base part (631) of the movable joint (63) is welded with the embedded part (62), the base part (631) is in sliding fit with a straight cylinder section of a flange (632), the flange (632) is connected with the supporting layer supporting beam (64) through bolts, and two inclined building blocks (633) are installed on a through hole inclined plane arranged on the base part (631) in a penetrating mode.
9. The concrete-steel structure hybrid corner brace construction method according to claim 8, further comprising applying a prestress after the supporting layer construction step.
10. The concrete-steel structure hybrid gusset construction method of claim 9, wherein the pre-stressing is: pressure is applied to the flange (632), the flange (632) slides on the base part (631), the two inclined building blocks (633) are knocked to match the inclination, so that the support layer support beam (64) reaches a pre-tightening stable support state, the base part (631) and the straight cylinder section of the flange (632) are welded and fixed, and after each support layer is in the same state, the two support layer support beams (64) on the long side are fixed on the support frame (7) through welding an I-beam on the support frame (7).
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| CN202111316108.8A CN114016516A (en) | 2021-11-08 | 2021-11-08 | Concrete-steel structure mixed angle brace construction method |
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| CN202111316108.8A CN114016516A (en) | 2021-11-08 | 2021-11-08 | Concrete-steel structure mixed angle brace construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115627771A (en) * | 2022-10-13 | 2023-01-20 | 广东省基础工程集团有限公司 | Foundation pit supporting structure |
| CN118997179A (en) * | 2024-10-23 | 2024-11-22 | 中交第一航务工程局有限公司 | Deep foundation pit concrete steel support combined structure and construction method thereof |
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| CN113502828A (en) * | 2021-07-23 | 2021-10-15 | 上海宝冶集团有限公司 | Processing method for early warning of deep foundation pit |
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2021
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| CN115627771A (en) * | 2022-10-13 | 2023-01-20 | 广东省基础工程集团有限公司 | Foundation pit supporting structure |
| CN118997179A (en) * | 2024-10-23 | 2024-11-22 | 中交第一航务工程局有限公司 | Deep foundation pit concrete steel support combined structure and construction method thereof |
| CN118997179B (en) * | 2024-10-23 | 2025-01-28 | 中交第一航务工程局有限公司 | A deep foundation pit concrete steel support composite structure and construction method thereof |
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Application publication date: 20220208 |