Reinforcing structure of newly-built support pile and high slope retaining wall and overall construction technology
By burying supporting piles on the outside of the high-slope retaining wall and installing crown beams and L-shaped wall panels, an overall structure is formed, which solves the problem of unstable stress of the high-slope retaining wall during the excavation of the foundation pit. It achieves the overall stability and safety of high slopes and foundation pits, and reduces construction costs and difficulties.
Patent Information
- Application Number
- CN202411809852.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-01-21
AI Technical Summary
During the excavation of the foundation pit of a new building, the high-slope retaining wall is easily affected by dynamic loads, resulting in a reduction in the safety of the support structure, increasing economic costs, and destroying the pipeline under existing roads.
The reinforcement structure and overall construction technology of the new support piles and high -side slopes, and the overall construction technology are built on the outside of the retaining wall, and the L -shaped wall plate is installed on the top of the top of the retaining wall and the outside of the retaining wall. The overall structure is to resist the power load of the retaining wall.
The overall stability and security of high -side slopes and foundation pits have been achieved, reducing the destruction of existing roads and pipelines, reducing construction costs and difficulty, and improving the security and economy of support structure.
Smart Images
Figure CN119332729A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and in particular to a newly-built supporting pile and high slope retaining wall reinforcement structure and an overall construction technology. Background Art
[0002] In many areas, there are new buildings adjacent to existing municipal roads, and the elevation of the new buildings is lower than the elevation of the road. When excavating the construction foundation pit, it will have a stress impact on the retaining wall of the existing road.
[0003] In the prior art, anchor grouting support and other reinforcement methods are often used for high slopes, and support pile support is often used for foundation pit excavation, and then step-by-step earth excavation construction is carried out to the bottom of the pit.
[0004] During the construction of high slope anchor grouting support, it is easy to damage the existing pipelines under the road. At the same time, the high slope support and foundation pit support are supported and reinforced separately, and they do not effectively form a whole. There is a dynamic load effect on pedestrians and vehicles on the road. The excavation of the foundation pit will increase the lateral load of the existing road retaining wall, resulting in a reduction in the safety of the support structure, creating safety hazards and increasing the economic cost of the support system. Summary of the invention
[0005] In order to improve the support and reinforcement problems in the above-mentioned background technology, the present invention provides a new support pile and high slope retaining wall reinforcement structure and an overall construction technology.
[0006] The invention provides a new support pile and high slope retaining wall reinforcement structure and overall construction technology, which adopts the following technical solutions: A newly built supporting pile and high slope retaining wall reinforcement structure comprises a retaining wall, wherein the bottom of the retaining wall is buried in a base soil body, supporting piles are buried outside the retaining wall, a pile-board wall is installed on the side of the supporting pile away from the retaining wall and a foundation pit is excavated; a crown beam is fixedly mounted on the top of the supporting pile, an L-shaped wall panel is fixedly abutted between the crown beam and the retaining wall, the supporting pile, the crown beam and the L-shaped panel form a whole, and the supporting pile cooperates with the crown beam and the L-shaped wall panel to resist the force load on the retaining wall.
[0007] Preferably, horizontal steel bars are tied inside the L-shaped wall panel, and the horizontal steel bars pass horizontally through the bent end of the L-shaped wall panel and are anchored in the crown beam; vertical steel bars are tied inside the supporting piles, and the vertical steel bars pass vertically through the top of the supporting piles and are anchored in the crown beam, so that the supporting piles, crown beam and L-shaped plate form a force-bearing whole.
[0008] Preferably, the space between the retaining wall and the supporting piles is filled with backfill soil for compaction.
[0009] Preferably, a downwardly inclined drainage pipe is provided in the pile-sheet wall, and a reverse filter bag is provided at the portion of the drainage pipe buried in the base soil to prevent the drainage pipe opening from being blocked.
[0010] Preferably, the retaining wall is provided with reinforcing ribs on the side facing the supporting piles for reinforcement.
[0011] A newly built supporting pile and high slope retaining wall reinforcement overall construction technology, a newly built supporting pile and high slope retaining wall reinforcement structure is constructed, comprising the following steps: step one: construct supporting piles on the outside of the retaining wall, the bottom of the retaining wall is buried in the base soil, and the exposed part below the top of the supporting pile is filled with backfill soil to be dense; step two: check the integrity of the supporting piles, and chisel out the floating slurry and weak layer at the pile head of the supporting pile to facilitate subsequent construction; step three: construct the crown beam on the top of the supporting pile and the L-shaped wall panel on the outside of the retaining wall, the supporting pile cooperates with the crown beam and the L-shaped wall panel to resist the load of the retaining wall; step four: excavate the foundation pit soil in layers until the bottom of the foundation pit, after each layer of excavation is completed, install the pile board wall on the side of the supporting pile away from the retaining wall.
[0012] Preferably, in step three, when constructing the crown beam and L-shaped wall panel, steel bars are tied to the top of the supporting piles and the outside of the retaining wall, tension bolts are used to fix a formwork of a corresponding shape on the steel bars, concrete is poured in the formwork, and the supporting piles, crown beam and L-shaped wall panel form a force-bearing whole.
[0013] Preferably, the cap beam and the L-shaped wall panel are both cast in layers at one time, with an interval time reserved for each layer of casting, and the previous layer of concrete is cast before the next layer of concrete begins to set.
[0014] In summary, the present invention has the following beneficial technical effects: 1. The present invention provides a structural system that reduces the impact on high-slope roads and foundation pit projects and achieves overall stability, safety and economy of the slopes and foundation pits. By constructing support piles, crown beams and L-shaped wall panels to resist the load on the retaining wall, a force-bearing whole is formed with better force-bearing effect, which meets the force requirements of foundation pit excavation and can effectively avoid interference with the high-slope retaining wall.
[0015] 2. The crown beam and L-shaped wall panel are constructed by tying steel bars and pouring concrete. The structure is stable and meets the force requirements. The bent end of the L-shaped wall panel abuts the crown beam, and the back side of the wall fits tightly and naturally with the retaining wall, avoiding damage to the back side of the retaining wall and the pipelines under the existing municipal roads, minimizing the cost and difficulty of construction, and ensuring that the support form is safe and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall installation of a newly built support pile and a high slope retaining wall reinforcement structure according to an embodiment of the present invention; Figure 2 is a structural perspective view of an L-shaped plate according to an embodiment of the present invention; Figure 3 Schematic diagram of installation of a pile-sheet wall according to an embodiment of the present invention.
[0017] Explanation of the reference numerals in the accompanying drawings: 1. retaining wall; 2. base soil; 3. supporting piles; 4. pile-board wall; 5. foundation pit; 6. crown beam; 7. L-shaped wall panel; 8. horizontal steel bars; 9. vertical steel bars; 10. backfill soil; 11. drain pipe; 12. filter bag; 13. reinforcing ribs; 14. downpipe; 15. drainage ditch. DETAILED DESCRIPTION
[0018] The following combination Figure 1-Figure 3 The present invention is described in further detail.
[0019] The embodiment of the present invention discloses a newly built support pile and high slope retaining wall reinforcement structure and an overall construction technology.
[0020] Reference Figure 1 , Figure 2 A newly built supporting pile and high slope retaining wall reinforcement structure comprises a retaining wall 1, the bottom of the retaining wall 1 is buried in the base soil 2, supporting piles 3 are buried outside the retaining wall 1, a pile-sheet wall 4 is installed on the side of the supporting piles 3 away from the retaining wall 1, and a foundation pit 5 is excavated; a crown beam 6 is fixed on the top of the supporting pile 3, and an L-shaped wall panel 7 is fixed between the crown beam 6 and the retaining wall 1; the back side of the L-shaped wall panel 7 fits tightly and naturally with the retaining wall 1, and the top surface of the bent end of the L-shaped wall panel 7 is flush with the top surface of the crown beam 6, so as to avoid damage to the existing municipal road underground pipeline 14 behind the retaining wall, and ensure that the supporting piles 3, the crown beam 6, and the L-shaped panel 7 form a whole, and the supporting piles 3 cooperate with the crown beam 6 and the L-shaped wall panel 7 to effectively resist the force load of the retaining wall 1, and the underground pipeline 14 includes a sewage pipe, a pre-buried drainage pipe, etc.
[0021] Reference Figure 1 , Figure 2 , horizontal steel bars 8 are tied inside the L-shaped wall panel 7, and the horizontal steel bars 8 pass horizontally through the bent end of the L-shaped wall panel 7 and are anchored 1m into the crown beam 6; vertical steel bars 9 are tied inside the supporting piles 3, and the vertical steel bars 9 pass vertically through the top of the supporting piles 3 and are anchored into the crown beam 6 to form a force-bearing whole.
[0022] Reference Figure 1 The backfill soil 10 is filled between the retaining wall 1 and the supporting piles 3. The bottom of the retaining wall 1 is buried in the base soil 2, and the leaking part below the top of the supporting piles 3 is filled with backfill soil densely.
[0023] Reference Figure 1 , Figure 3 A downwardly inclined drainage pipe 11 is provided in the pile-sheet wall 4, and the drainage pipe is inclined downward by 5%. The vertical spacing between adjacent drainage pipes 11 is 2.5m. An anti-filter bag 12 is provided at the portion of the drainage pipe 11 buried in the base soil 2 to prevent the drainage pipe 11 from being blocked. After the foundation pit 5 is excavated, the drainage pipe 11 is exposed, and the exposed length is 50mm. A drainage ditch 15 is provided at the position below the drainage pipe 11.
[0024] Reference Figure 1 , Figure 2 A reinforcing rib 13 is provided on the side of the retaining wall 1 facing the supporting pile 3 for reinforcement.
[0025] Reference Figure 1 , Figure 2 , Figure 3 A new supporting pile and high slope retaining wall reinforcement integral construction technology, a new supporting pile and high slope retaining wall reinforcement structure is constructed, including the following steps: Step 1: construct support piles 3 on the outside of the retaining wall 1, the top elevation of the support piles 3 is higher than the bottom elevation of the retaining wall 1 and the height difference is not less than 2m, the bottom of the retaining wall 1 is buried in the base soil 2, and the exposed part below the top of the support piles 3 is filled with backfill soil and compacted; Step 2: Check the integrity of the support pile 3 and remove the floating slurry and weak layer at the head of the support pile 3; Step 3: construct the crown beam 6 on the top of the support pile 3 and the L-shaped wallboard 7 on the outside of the retaining wall 1, and the support pile 3 cooperates with the crown beam 6 and the L-shaped wallboard 7 to resist the load of the retaining wall 1; Step 4: After the concrete of the crown beam 6 and the L-shaped wall panel 7 reaches the design strength, the excavation of the foundation pit 5 can be carried out. The foundation pit 5 is excavated in layers and the corresponding pile-sheet wall 4 is constructed until the bottom of the foundation pit 5. The height of each layer of earth excavated by mechanical equipment does not exceed 1.5m. After each layer of excavation is completed, the pile-sheet wall 4 is installed on the side of the supporting pile 3 away from the retaining wall 1.
[0026] Reference Figure 1 In step one, the backfill soil is backfilled in layers, and the thickness of each layer of backfill soil does not exceed 200mm, ensuring that the compaction coefficient of the backfill soil quality is not less than 0.94.
[0027] Reference Figure 1 , Figure 2 In step three, when constructing the crown beam 6 and the L-shaped wall panel 7, steel bars are tied to the top of the supporting pile 3 and the outside of the retaining wall 1, and a template of corresponding shape is fixed to the steel bars using tension bolts. Concrete is poured in the template, and the supporting pile 3, the crown beam 6 and the L-shaped wall panel 7 form a force-bearing whole; the crown beam 6 and the L-shaped wall panel 7 are both poured in layers at one time, and an interval time is reserved for each layer to avoid expansion of the template. At the same time, the previous layer of concrete is poured before the next layer of concrete begins to set.
[0028] Reference Figure 1 , Figure 3 In step 4, the thickness of the pile-sheet wall 4 is 300 mm, and the side of the pile-sheet wall 4 is planted with reinforcement, the reinforcement penetrates 300 mm into the pile body of the supporting pile 3, the vertical spacing of the reinforcement is 600 mm, and the horizontal spacing of the reinforcement is the spacing between adjacent supporting piles 3.
[0029] The implementation principle of a newly built supporting pile and high slope retaining wall reinforcement structure and overall construction technology in an embodiment of the present invention is as follows: constructing supporting piles 3 on the outside of the retaining wall 1, filling backfill soil between the retaining wall 1 and the supporting piles 3 for compaction, constructing a crown beam 6 on the top of the supporting pile 3 and an L-shaped wall panel 7 on the outside of the retaining wall 1, the supporting piles 3 cooperate with the crown beam 6 and the L-shaped wall panel 7 to resist the force load on the retaining wall 1, installing a pile-sheet wall 4 on the side of the supporting pile 3 away from the retaining wall 1 and excavating a foundation pit 5.
[0030] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A newly constructed support pile and high slope retaining wall reinforcement structure, comprising a retaining wall (1), wherein the bottom of the retaining wall (1) is buried in a base soil (2), and is characterized in that: Support piles (3) are buried outside the retaining wall (1); a pile-sheet wall (4) is installed on the side of the support piles (3) away from the retaining wall (1), and a foundation pit (5) is excavated; a crown beam (6) is fixedly mounted on the top of the support piles (3); an L-shaped wall panel (7) is fixedly abutted between the crown beam (6) and the retaining wall (1); the support piles (3) cooperate with the crown beam (6) and the L-shaped wall panel (7) to resist the load of the retaining wall (1).
2. A newly built support pile and high slope retaining wall reinforcement structure according to claim 1, characterized in that: Horizontal steel bars (8) are tied inside the L-shaped wall panel (7), and the horizontal steel bars (8) extend horizontally through the bent end of the L-shaped wall panel (7) and are anchored in the crown beam (6); vertical steel bars (9) are tied inside the support pile (3), and the vertical steel bars (9) extend vertically through the top of the support pile (3) and are anchored in the crown beam (6).
3. A newly built support pile and high slope retaining wall reinforcement structure according to claim 1, characterized in that: Backfill soil (10) is filled between the retaining wall (1) and the support piles (3).
4. A newly built support pile and high slope retaining wall reinforcement structure according to claim 1, characterized in that: A downwardly inclined drainage pipe (11) is provided in the pile-sheet wall (4), and a reverse filter bag (12) is provided at the portion of the drainage pipe (11) buried in the base soil (2).
5. A newly built support pile and high slope retaining wall reinforcement structure according to claim 1, characterized in that: The retaining wall (1) is provided with reinforcing ribs (13) on the side facing the supporting piles (3).
6. A new supporting pile and high slope retaining wall reinforcement integrated construction technology, which constructs a new supporting pile and high slope retaining wall reinforcement structure as described in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: constructing support piles (3) outside the retaining wall (1), burying the bottom of the retaining wall (1) in the base soil (2), and filling the exposed part below the top of the support piles (3) with backfill soil to make it dense; Step 2: Check the integrity of the supporting pile (3), and remove the floating slurry and weak layer at the head of the supporting pile (3); Step 3: constructing a crown beam (6) on the top of the support pile (3) and an L-shaped wall panel (7) on the outside of the retaining wall (1), wherein the support pile (3) cooperates with the crown beam (6) and the L-shaped wall panel (7) to resist the load of the retaining wall (1); Step 4: excavate the foundation pit (5) layer by layer until the bottom of the foundation pit (5). After each layer of excavation is completed, install the pile-sheet wall (4) on the side of the support pile (3) away from the retaining wall (1).
7. The integrated construction technology of newly built supporting piles and high slope retaining wall reinforcement according to claim 6 is characterized by: In step 3, when constructing the crown beam (6) and the L-shaped wall panel (7), steel bars are tied to the top of the support pile (3) and the outside of the retaining wall (1), and a template of a corresponding shape is fixed to the steel bars using tension bolts. Concrete is poured in the template, and the support pile (3), the crown beam (6) and the L-shaped wall panel (7) form a force-bearing whole.
8. The integrated construction technology of newly built supporting piles and high slope retaining wall reinforcement according to claim 7 is characterized by: The crown beam (6) and the L-shaped wall panel (7) are both cast in layers at one time, with an interval reserved for each layer of casting, and the previous layer of concrete is cast before the next layer of concrete begins to set.