Construction method for basement main body structure at slope support

Abstract

The invention relates to a method for constructing a basement main body structure at a slope support, which is used for constructing the basement main body structure by means of a slope retaining wall at the toe of a mountain slope, and comprises the following steps: S1, positioning and driving anchor cables; s2, a basement bottom plate is constructed; s3, constructing a shear wall; s4, a basement top plate is constructed; s5, anchor heads are installed on the inner side of the shear wall to be connected with anchor cables; s6, gravel backfilling; the side slope retaining wall serves as a single-side support to participate in construction of the basement main body structure, the side slope retaining wall and the shear wall of the basement are combined into a whole, the anchor cable and the mountain side slope are tied, and a stable supporting system is formed in cooperation with gravel backfilling, so that normal construction of the basement main body structure can be completed; and the stability of the slope supporting structure and the basement main body structure is ensured, and the working condition that the basement main body structure is adjacent to the slope retaining wall can be adapted.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, in particular to a construction method for a basement main structure at a slope support. Background Art

[0002] During the construction of mountain projects, the main structure is usually constructed after the mountain slope support is completed.

[0003] When site planning conditions are limited, there is a problem that the shear wall of the main structure is close to or even overlaps with the slope retaining wall. For example, the design position of the shear wall of the basement main structure conflicts with the position of the slope retaining wall, which makes it impossible to support the formwork construction of the basement main structure, seriously affecting the construction progress of the basement. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a method for constructing the main structure of a basement at a slope support to solve the technical problem in the prior art that the shear wall of the main structure of the basement is adjacent to the slope retaining wall and cannot be normally supported by the formwork.

[0005] To achieve the above object, the present invention provides a method for constructing a basement main structure at a slope support, which is used to construct the basement main structure with the help of a slope retaining wall at the foot of a mountain slope. The construction method comprises the following steps:

[0006] S1. Positioning and laying of anchor cables;

[0007] S2, construction of basement floor;

[0008] S3, construction shear wall;

[0009] S4, construction of basement roof;

[0010] S5. Install anchor heads and connect anchor cables on the inner side of the shear wall;

[0011] S6. Gravel backfill.

[0012] By adopting this technical solution, the slope retaining wall is used as a single-side support to participate in the construction of the main structure of the basement. It is integrated with the shear wall of the basement and tied to the mountain slope with the help of anchor cables. After backfilling with crushed stone, a stable support system is formed. This can not only complete the normal construction of the main structure of the basement, but also ensure the stability of the slope support structure and the main structure of the basement, and can adapt to the working conditions of the main structure of the basement adjacent to the slope retaining wall.

[0013] Furthermore, step S1 includes opening a hole on the slope retaining wall for the anchor cable to pass through, inserting the anchor cable into the slope retaining wall through the hole, driving the anchor end of the anchor cable into the mountain slope, and performing grouting outside the free section of the anchor cable extending inside the mountain slope.

[0014] By adopting this technical solution, additional anchor cables are installed that pass through the slope retaining wall and anchor into the mountain slope to provide the prerequisite for the basement main structure to be tied together.

[0015] Furthermore, step S2 includes supporting the formwork and tying the steel bars of the basement floor on the side of the slope retaining wall away from the mountain slope, then pouring concrete on the tied steel bars, and removing the formwork after the concrete solidifies to form the basement floor.

[0016] By adopting this technical solution, the side formwork is replaced by a slope retaining wall to directly cast the basement floor, which can reduce the complexity of construction and increase construction efficiency.

[0017] Furthermore, when the formwork of the basement floor is supported in step S2, a drainage ditch is also supported on the top of the side close to the slope retaining wall, and a drainage ditch is formed on the top of the side close to the slope retaining wall after the concrete of the basement floor is poured and solidified.

[0018] By adopting this technical solution, drainage ditches are reserved while constructing the basement floor, providing a basis for draining indoor and outdoor accumulated water.

[0019] Furthermore, step S3 includes using the slope retaining wall as a single-side formwork, supporting the formwork of the shear wall and tying the steel bars on the basement floor, then pouring concrete on the tied steel bars, and removing the formwork to form the shear wall after the concrete is solidified.

[0020] By adopting this technical solution, the shear wall is directly cast and formed by replacing the support of the side formwork with the slope retaining wall, which can not only reduce the complexity of construction and increase construction efficiency, but also combine the formed shear wall with the slope retaining wall into one, complementing each other to increase the strength and stability of the structure.

[0021] Furthermore, the step S3 also includes opening a drainage hole penetrating the integrated wall formed by the slope retaining wall and the shear wall, and ensuring that the drainage hole is higher than the drainage ditch.

[0022] By adopting this technical solution, the drainage holes can drain the accumulated water on the side of the slope retaining wall close to the mountain slope, so that the accumulated water enters the indoor drainage ditch for centralized discharge.

[0023] Furthermore, step S4 includes supporting the formwork and tying the reinforcement of the basement top plate on the top of the shear wall, then pouring concrete on the tied reinforcement, and removing the formwork after the concrete solidifies to form the basement top plate.

[0024] By adopting this technical solution, the basement top plate is formed and combined with the shear wall to form the main structure of the basement there.

[0025] Furthermore, the step S5 includes installing an anchor head on the inner surface of the shear wall and tensioning the anchor cable through the anchor head to lock it.

[0026] By adopting this technical solution, the anchor head and anchor cable cooperate to make the integrated wall formed by the shear wall and the slope retaining wall be tied to the mountain slope, thereby forming a stable tied structure.

[0027] Furthermore, the step S6 includes filling gravel into the space formed between the slope retaining wall and the mountain slope.

[0028] By adopting this technical solution, the crushed stone applies pressure to the integrated wall formed by the slope retaining wall and the shear wall, and the anchor cables on the mountain slope tie the slope retaining wall and the shear wall together to form a stable system, thereby ensuring the stability of the main structure of the basement.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The slope retaining wall is used as a single-side support to participate in the construction of the main structure of the basement. It is integrated with the shear wall of the basement and tied to the mountain slope with the help of anchor cables. After backfilling with crushed stone, a stable support system is formed, which can not only complete the normal construction of the main structure of the basement, but also ensure the stability of the slope support structure and the main structure of the basement.

[0031] 2. Drain holes are opened simultaneously on the slope retaining wall and the basement shear wall, which can guide the water accumulated on the side of the slope retaining wall close to the mountain slope into the basement, and then be discharged from the drainage ditch along with the basement drainage, thus solving the problem of water accumulation on the side of the slope retaining wall close to the mountain slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a construction diagram of step S1 of the method for constructing the main structure of the basement at the slope support in the present invention;

[0033] Figure 2 This is a construction diagram of step S2 of the method for constructing the main structure of the basement at the slope support in the present invention;

[0034] Figure 3 It is a construction schematic diagram of steps S3-S4 of the construction method of the main structure of the basement at the slope support in the present invention;

[0035] Figure 4 It is a construction schematic diagram of steps S5-S6 of the basement main structure construction method at the slope support in the present invention.

[0036] Explanation of the accompanying reference numerals: 1. Mountain slope; 2. Slope retaining wall; 3. Anchor cable; 4. Basement floor; 41. Drainage ditch; 5. Shear wall; 6. Basement roof; 7. Drain hole; 8. Gravel. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to the attached Figure 1-4 The present invention provides a method for constructing a basement main structure at a slope support, which is used to construct a basement main structure with the help of a slope retaining wall 2 at the foot of a mountain slope 1. The construction method includes the following steps:

[0039] A through hole is opened on the slope retaining wall 2 for the anchor cable 3 to pass through. After the anchor cable 3 is inserted into the slope retaining wall 2 through the through hole, the anchor end of the anchor cable 3 is driven into the mountain slope 1, and grouting is performed outside the free section of the anchor cable 3 extending to the inside of the mountain slope 1;

[0040] The formwork of the basement floor 4 is supported and the steel bars are tied on the side of the slope retaining wall 2 away from the mountain slope 1, and the drainage ditch 41 is supported on the top of the side close to the slope retaining wall 2, and then concrete is poured on the tied steel bars. After the concrete is solidified, the formwork is removed to form the basement floor 4, and the drainage ditch 41 is formed on the top of the side close to the slope retaining wall 2;

[0041] The slope retaining wall 2 is used as a single-side formwork, and the formwork of the shear wall 5 is supported and the steel bars are tied on the basement floor 4, and then concrete is poured on the tied steel bars. After the concrete is solidified, the formwork is removed to form the shear wall 5; a drainage hole 7 penetrating the integrated wall formed by the slope retaining wall 2 and the shear wall 5 is opened, and it is ensured that the drainage hole 7 is higher than the drainage ditch 41;

[0042] The formwork of the basement top plate 6 is supported and the steel bars are tied on the top of the shear wall 5, and then concrete is poured on the tied steel bars. After the concrete is solidified, the formwork is removed to form the basement top plate 6;

[0043] An anchor head is installed on the inner surface of the shear wall 5, and the anchor cable 3 is tensioned by the anchor head to lock it;

[0044] The space formed between the slope retaining wall 2 and the mountain slope 1 is filled with crushed stones 8 to form a stable support and tie system, thus completing the construction of the main structure of the basement.

[0045] In the above construction step, in order to increase the stability of the anchoring system, multiple anchor cables 3 can be set along the height direction and length direction of the slope retaining wall 2, and can be set to be inclined upward toward one side of the slope retaining wall 2.

[0046] In order to increase the efficiency of draining accumulated water between the slope retaining wall 2 and the mountain slope 1, multiple drainage holes 7 can be set along the height and length directions of the integrated wall formed by the slope retaining wall 2 and the shear wall 5, and can be set to be inclined downward toward the indoor side of the basement.

[0047] In order to avoid the impact of crushed stone 8 on the anchor cable 3 during backfilling, a protective tube can be installed on the anchor cable 3 extending out of the mountain slope 1 before the shear wall 5 is cast, and it is ensured that the protective tube does not extend into the shear wall 5. The protective tube is then fixed after the shear wall 5 is cast, thereby forming protection for the anchor cable 3 during backfilling of crushed stone 8.

[0048] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, some details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be the scope defined by the attached claims.

Claims

1. A method for constructing the main structure of a basement at a slope support, which is used to construct the main structure of a basement with the help of a slope retaining wall at the foot of a mountain slope, and is characterized in that: The construction method comprises the following steps: S1. Positioning and laying of anchor cables; S2, construction of basement floor; S3, construction shear wall; S4, construction of basement roof; S5. Install anchor heads and connect anchor cables on the inner side of the shear wall; S6. Gravel backfill.

2. The method for constructing the main structure of the basement at the slope support according to claim 1 is characterized in that: The step S1 includes opening a hole on the slope retaining wall for the anchor cable to pass through, inserting the anchor cable into the slope retaining wall through the hole, driving the anchor end of the anchor cable into the mountain slope, and performing grouting outside the free section of the anchor cable extending inside the mountain slope.

3. The method for constructing the main structure of the basement at the slope support according to claim 1 is characterized in that: The step S2 includes supporting the formwork and tying the steel bars of the basement floor on the side of the slope retaining wall away from the mountain slope, then pouring concrete on the tied steel bars, and removing the formwork after the concrete is solidified to form the basement floor.

4. The method for constructing the main structure of the basement at the slope support according to claim 3 is characterized in that: When the formwork of the basement floor is supported in the step S2, it also includes supporting a drainage ditch on the top of the side close to the slope retaining wall, and forming a drainage ditch on the top of the side close to the slope retaining wall after the concrete of the basement floor is poured and solidified.

5. The method for constructing the main structure of the basement at the slope support according to claim 4 is characterized in that: The step S3 includes using the slope retaining wall as a single-side formwork, supporting the formwork of the shear wall on the basement floor and tying steel bars, then pouring concrete on the tied steel bars, and removing the formwork to form the shear wall after the concrete is solidified.

6. The method for constructing the main structure of the basement at the slope support according to claim 5 is characterized in that: The step S3 also includes opening a drainage hole penetrating the integrated wall formed by the slope retaining wall and the shear wall, and ensuring that the drainage hole is higher than the drainage ditch.

7. The method for constructing the main structure of the basement at the slope support according to claim 1 is characterized in that: The step S4 includes supporting the formwork and tying the reinforcement of the basement top plate on the top of the shear wall, then pouring concrete on the tied reinforcement, and removing the formwork after the concrete is solidified to form the basement top plate.

8. The method for constructing the main structure of the basement at the slope support according to claim 1 is characterized in that: The step S5 includes installing an anchor head on the inner surface of the shear wall and tensioning the anchor cable through the anchor head to lock it.

9. The method for constructing the main structure of the basement at the slope support according to claim 1 is characterized in that: The step S6 includes filling crushed stones into the space formed between the slope retaining wall and the mountain slope.

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