Deep foundation pit supporting structure for building construction

Abstract

The invention provides a building construction deep foundation pit supporting structure, and relates to the technical field of building construction deep foundation pits, the building construction deep foundation pit supporting structure is characterized in that an anchor rod assembly is arranged in a mounting groove, the anchor rod assembly moves into the mounting groove along the interior of the mounting groove, and the anchor rod assembly is provided with a first-layer concrete column and a second-layer concrete column which are used for improving the bearing capacity of the anchor rod assembly. According to the invention, the inclined arrangement of the mounting groove is beneficial to utilizing the lateral pressure of the soil layer and improving the anchoring effect of the anchor rod assembly, the first layer of concrete column and the second layer of concrete column are respectively formed in sequence by matching with the twice pouring of the anchor rod assembly, and the anchoring effect of the anchor rod assembly in the soil layer is further enhanced by the formation of the two layers of concrete columns; and the bearing capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of deep foundation pits for building construction, and in particular to a supporting structure for a deep foundation pit for building construction. Background Art

[0002] Deep foundation pits in construction refer to foundation pits with a large excavation depth used to support buildings or other structures. The construction of deep foundation pits is very common in urban construction, especially in the city center. Due to the scarcity of land and dense surrounding buildings, it is usually necessary to dig deep foundation pits for underground space development, such as basements, underground parking lots, subways, etc. The foundation pit support structure is used in the construction process to ensure the stability of the foundation pit and prevent the foundation pit from collapsing or deforming.

[0003] A deep foundation pit support structure for construction is disclosed in the Chinese invention patent application disclosure CN113417293B. The fixing nails of the deep foundation pit support structure for construction act as anchor rods in the prior art to cooperate with the support plate to support the inner wall of the deep pit. However, the fixing nails are inserted horizontally into the soil. The horizontally arranged fixing nails mainly bear the force in the horizontal direction and cannot fully utilize the supporting force in the vertical direction. The horizontally arranged fixing nails have poor ability to prevent the structure from horizontal displacement, especially when the soil is soft or the rock is unstable, displacement or instability is likely to occur. On this basis, there is no lateral structural support on the outside of the support plate, and the displacement problem cannot be well dealt with.

[0004] Therefore, we propose a deep foundation pit support structure for building construction to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to make up for the deficiencies of the prior art and to propose a deep foundation pit support structure for construction, which can improve the tensile strength and enhance the anchoring effect, and solve the problems of low bearing capacity brought by existing anchor rods and poor ability of horizontally arranged anchor rods in preventing horizontal displacement of the structure.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a deep foundation pit support structure for construction, comprising a soil layer and support piles, a deep pit is opened on the soil layer, a plurality of support piles are installed on the inner wall of the soil layer, an L-shaped column is fixedly connected to the top of the support pile, a plurality of installation grooves are opened on the inner wall of the soil layer, and the installation grooves are inclined toward the inside of the soil layer; An anchor rod assembly is arranged inside the installation groove, and the anchor rod assembly moves along the inside of the installation groove to the inside of the installation groove. The anchor rod assembly is provided with a first layer of concrete columns and a second layer of concrete columns, so as to improve the bearing capacity of the anchor rod assembly; An angled support assembly is slidably connected to the L-shaped column, the angled support assembly is arranged between the L-shaped column and the base at the bottom of the deep pit, the angled support assembly is arranged obliquely, and one end of the anchor rod assembly is connected to the inside of the angled support assembly; By adopting the above technical solution, the anchor rod assembly is located in the installation groove inclined toward the inside of the soil layer. This inclined setting helps to utilize the lateral pressure of the soil layer and increase the anchoring effect of the anchor rod assembly. When the anchor rod assembly moves along the installation groove to a suitable position inside, due to the inclination of the installation groove, the anchor rod assembly can better withstand the force of the supporting pile. The anchor assembly is provided with a first layer of concrete columns and a second layer of concrete columns. The existence of the first layer of concrete columns and the second layer of concrete columns can improve the bearing capacity of the anchor assembly. The concrete columns can increase the friction and adhesion between the anchor and the surrounding soil layer, so that the anchor can better resist the tensile force, thereby improving the stability of the entire supporting structure; The angled support assembly is slidably connected to the L-shaped column and is arranged between the L-shaped column and the base at the bottom of the deep pit in an inclined shape. This inclined setting can effectively transfer the pressure from the upper structure borne by the L-shaped column to the bottom of the deep pit, dispersing the pressure and reducing the situation of excessive local force; One end of the anchor rod assembly is connected to the inside of the angled support assembly. In this way, the anchor rod assembly can provide additional tension support for the angled support assembly. When the angled support assembly is under pressure, the tension of the anchor rod assembly can prevent it from excessive deformation or instability, thereby balancing and stabilizing the angled support assembly. In the entire deep foundation pit support structure, the support piles are fixed on the inner wall of the soil layer, and the L-shaped columns on the top cooperate with the angled support components. The support piles bear the vertical pressure from the upper structure, and the angled support components convert part of the vertical pressure into oblique pressure and transmit it to the bottom of the deep pit. At the same time, the anchor rod assembly provides tension balance for the angled support components.

[0007] Furthermore, the angled support assembly includes a bottom plate, a movable rod and a rotating rod, the top of the rotating rod is rotatably connected to a slider, a limiting groove is provided on the outer wall of the L-shaped column, and a limiting block is installed in the limiting groove, which is suitable for installing the angled support assembly on the L-shaped column; The top of the rotating rod is slidably connected to a movable frame, the bottom of the rotating rod is slidably connected to a movable rod, a cavity is provided between the movable frame and the rotating rod, an oil inlet pipe is provided on the outer wall of the rotating rod, the oil inlet pipe extends to the inside of the cavity, the bottom plate is installed at the bottom of the movable rod, and the lower surface of the bottom plate is configured as a tooth shape; By adopting the above technical solution, lubricating oil is added to the interior of the cavity through the oil inlet pipe and the port of the oil inlet pipe is closed. When the angled support assembly converts part of the vertical pressure into oblique pressure and transmits it to the bottom of the deep pit, the movable rod generates a reverse force on the lubricating oil, thereby pushing the movable frame to move toward the top of the rotating rod. The lower surface of the bottom plate is set as a toothed structure to increase the friction between the lower surface of the bottom plate and the bottom of the deep pit.

[0008] Furthermore, a through groove is provided on the lower surface of the rotating rod, and the first cable is connected to the movable frame through the through groove; By adopting the above technical solution, the oblique pressure of the angled support assembly is further reduced by dispersing the pressure to the first layer of concrete columns and the second layer of concrete columns through the first cable.

[0009] Further, one end of the anchor rod assembly is connected to the movable frame through a through groove, and the anchor rod assembly includes a connecting block, and five plastic tubes are fixedly connected to the upper surface of the connecting block, and second cables are arranged inside four of the plastic tubes, and one end of the second cable is fixedly connected to the connecting block, and a first cable is arranged inside the remaining plastic tube, and one end of the first cable is fixedly connected to the connecting block; The outer wall of the remaining plastic tube is provided with a plurality of through holes, and concrete is poured into the installation groove through the plurality of through holes to form a first layer of concrete columns; By adopting the above technical solution, during the pouring process, concrete flows out from the through hole and fills the installation groove, combining with the surrounding soil layer to improve the anchoring capacity of the anchor assembly. The five plastic tubes are provided so that the concrete can be filled in two times. The first filled concrete only acts on the first cable to prevent the first filled concrete from affecting the second cable, thereby affecting the second filling and pouring.

[0010] Further, the diameter of the first cable is greater than the diameter of the plastic tube, the first cable is located inside the four second cables, and the remaining plastic tube is located inside the remaining four plastic tubes; By adopting the above technical solution, this multi-cable structure can increase the tensile strength of the anchor assembly. The diameter of the first cable is larger than the diameter of the plastic tube and is located on the inside of the four second cables. This layout is conducive to the reasonable distribution of tension, so that the anchor assembly can withstand the tension more evenly when subjected to force. The first cable is used to cooperate with the angled support assembly, and a thicker first cable is required.

[0011] Furthermore, sleeve rings are installed on the outer walls of four of the plastic tubes, and a plurality of rope-hanging rings are installed on the outer wall of the remaining one of the plastic tubes, and the sleeve rings are close to the outer side of the rope-hanging ring; By adopting the above technical solution, the rope ring is used to disperse the five plastic pipes, and the gaps between them are filled with concrete. The setting of the ring is used to compensate for the gap between the plastic pipe and the rope ring, so that they can maintain a stable fit and have a better stress effect after concrete pouring.

[0012] Furthermore, the outer walls of the four plastic pipes are connected with a fixed block, the inner side of the fixed block is slidably connected with a top block, the top of the top block is provided with a conical surface, and the inner wall of the top block is provided with a discharge port, the concrete pushes the top block into the soil and is discharged through the discharge port, and the second layer of concrete columns is formed after pouring; By adopting the above technical solution, the conical surface on the top of the top block is conducive to being pushed into the soil when pouring concrete. When pouring concrete, the concrete exerts pressure on the top block, the top block is pushed into the soil, and the concrete is discharged through the discharge port on the inner wall of the top block. After pouring, a second layer of concrete columns is formed. The formation of these two layers of concrete columns further enhances the anchoring effect of the anchor assembly in the soil layer and improves its bearing capacity.

[0013] Furthermore, a force-bearing plate is installed on the outer wall of the port of the installation groove, and four threaded tubes are connected to the outer wall of the force-bearing plate, and the four second cables pass through the threaded tubes; By adopting the above technical solution, the four second cables are dispersed and cooperate with the load-bearing plate. When there is pressure on the top of the support pile, the pressure will be dispersed to the inside of the deep pit. The support pile cooperates with the load-bearing plate and the four second cables to generate interaction force, further reducing the pressure on the support pile.

[0014] Furthermore, one end of each of the four second cables is fixedly connected to a cone; By adopting the above technical solution, the force-bearing plate on the outer wall of the installation groove port is connected to the four second cables through the threaded tube, and the cones fixedly connected at one end of the four second cables interact with the threaded sleeve.

[0015] Furthermore, a threaded sleeve is threadedly connected to the outer wall of the threaded tube, the threaded sleeve is sleeved on the second cable, and the cone limits the threaded sleeve; By adopting the above technical solution, the tightness of the cable can be adjusted by rotating the threaded sleeve, and when under force, when there is pressure on the top of the support pile, the pressure will be dispersed to the inside of the deep pit, and the support pile cooperates with the force plate and the four second cables to generate interaction force. The blocking effect of the cone and the threaded sleeve ensures the connection stability between the cable and the force plate, thereby effectively transmitting force between the components.

[0016] Compared with the existing technology, the deep foundation pit support structure for building construction has the following beneficial effects: 1. The present invention arranges the installation groove obliquely. This oblique arrangement helps to utilize the lateral pressure of the soil layer to increase the anchoring effect of the anchor rod assembly. With the two pourings of the anchor rod assembly, a first layer of concrete column and a second layer of concrete column are formed respectively. The formation of these two layers of concrete columns further enhances the anchoring effect of the anchor rod assembly in the soil layer and improves its bearing capacity. The obliquely arranged anchor rod assembly can effectively resist the displacement caused by external forces in the horizontal direction and enhance the anti-movement ability of the structure. This solves the problem of low bearing capacity brought about by horizontally arranged anchor rods in the prior art. The horizontally arranged anchor rods have poor ability to prevent horizontal displacement of the structure, especially when the soil is soft or the rock is unstable, and displacement or instability is prone to occur.

[0017] 2. In the present invention, the supporting piles bear the vertical pressure from the upper structure through the setting of the angled support assembly, and the angled support assembly converts part of the vertical pressure into oblique pressure and transmits it to the bottom of the deep pit. At the same time, the anchor rod assembly provides tension balance for the angled support assembly. The angled support assembly is installed on the L-shaped column, and the first cable is connected to the movable frame through the through groove, and is dispersed to the first and second concrete columns through the first cable, thereby further reducing the oblique pressure of the angled support assembly, thereby improving the bearing capacity of the anchor rod assembly, and solving the problem that the existing anchor rod has no lateral structural support.

[0018] 3. The present invention arranges the force-bearing plate and the threaded sleeve, and by rotating the threaded sleeve, the tightness of the cable can be adjusted. When force is applied, when there is pressure on the top of the support pile, the pressure will be dispersed to the inside of the deep pit. The support pile cooperates with the force-bearing plate and the four second cables to generate interaction force. The blocking effect of the cone and the threaded sleeve ensures the connection stability between the cable and the force-bearing plate, thereby effectively transmitting the force between the components.

[0019] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the angled support assembly of the present invention; Figure 3 It is a schematic diagram of the supporting piles and soil layers of the present invention; Figure 4 This is a schematic diagram of the installation groove and soil layer of the present invention; Figure 5 It is a schematic diagram of the load-bearing plate of the present invention; Figure 6 It is a schematic diagram of the anchor rod assembly of the present invention; Figure 7 This is a schematic diagram of the top block and the plastic pipe of the present invention; Figure 8 for Figure 7 Enlarged view of point A in the middle; Fig. 9 This is a schematic diagram of the first layer of concrete column of the present invention; Fig.10 This is a schematic diagram of the second layer of concrete column of the present invention; Fig.11 It is a schematic diagram of the interior of the angled support assembly of the present invention; Fig.12 It is a schematic diagram of the load-bearing plate and the threaded sleeve of the present invention.

[0021] In the figure: 1. Soil layer; 101. Installation slot; 2. Support piles; 3. Angle support assembly; 301. Bottom plate; 302. Movable rod; 303. Rotating rod; 304. Movable frame; 305. Oil inlet pipe; 306. Through slot; 4. Anchor rod assembly; 401. Connecting block; 402. Plastic pipe; 403. First cable; 404. Second cable; 4040. Cone; 405. Rope ring; 406. Ring; 407. Fixing block; 408. Top block; 4080. Discharge port; 5. The first layer of concrete columns; 6. The second layer of concrete columns; 7. Load-bearing plate; 701. Threaded pipe; 8. Threaded sleeve; 9. L-shaped column; 901. limiting groove; 902. limiting block; 10. Abutment at the bottom of the deep pit; 11. Support seat; 1101. Boss. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 12The present invention provides the following implementation scheme: a deep foundation pit support structure for construction, comprising a soil layer 1 and support piles 2, a deep pit is opened on the soil layer 1, a plurality of support piles 2 are installed on the inner wall of the soil layer 1, a support seat 11 is cast in the middle of the support piles 2 on the same side, a boss 1101 is provided on the support seat 11, an L-shaped column 9 is fixedly connected to the top of the support pile 2, a plurality of installation grooves 101 are opened on the inner wall of the soil layer 1, the installation grooves 101 are inclined toward the inside of the soil layer 1, the installation grooves 101 are distributed correspondingly to the bosses 1101, and the installation grooves 101 are provided with slot holes connected to the installation grooves 101; An anchor rod assembly 4 is arranged inside the installation groove 101. The anchor rod assembly 4 moves along the inside of the installation groove 101 to the inside of the installation groove 101. The anchor rod assembly 4 is provided with a first layer of concrete columns 5 and a second layer of concrete columns 6 for improving the bearing capacity of the anchor rod assembly 4. The L-shaped column 9 is slidably connected with an angled support assembly 3, which is arranged between the L-shaped column 9 and the base 10 at the bottom of the deep pit. The angled support assembly 3 is arranged obliquely, and one end of the anchor assembly 4 is connected to the inside of the angled support assembly 3; By adopting the above technical solution, the anchor rod assembly 4 is located in the installation groove 101 which is inclined toward the inside of the soil layer 1. This inclined setting helps to utilize the lateral pressure of the soil layer 1 to increase the anchoring effect of the anchor rod assembly 4. When the anchor rod assembly 4 moves along the installation groove 101 to a suitable position inside, due to the inclination of the installation groove 101, the anchor rod assembly 4 can better withstand the force of the support pile 2. The anchor assembly 4 is provided with a first layer of concrete columns 5 and a second layer of concrete columns 6. The existence of the first layer of concrete columns 5 and the second layer of concrete columns 6 can improve the bearing capacity of the anchor assembly 4. The concrete columns can increase the friction and adhesion between the anchor and the surrounding soil layer 1, so that the anchor can better resist the tensile force, thereby improving the stability of the entire supporting structure; The angled support assembly 3 is slidably connected to the L-shaped column 9 and is arranged between the L-shaped column 9 and the base 10 at the bottom of the deep pit in an inclined shape. This inclined arrangement can effectively transfer the pressure from the upper structure borne by the L-shaped column 9 to the bottom of the deep pit, dispersing the pressure and reducing the situation of excessive local force; One end of the anchor rod assembly 4 is connected to the inside of the angled support assembly 3. In this way, the anchor rod assembly 4 can provide additional tension support for the angled support assembly 3. When the angled support assembly 3 is subjected to pressure, the tension of the anchor rod assembly 4 can prevent it from excessive deformation or instability, thereby balancing and stabilizing the angled support assembly 3. In the entire deep foundation pit support structure, the support pile 2 is fixed on the inner wall of the soil layer 1, and the L-shaped column 9 on the top cooperates with the angled support assembly 3. The support pile 2 bears the vertical pressure from the upper structure, and the angled support assembly 3 converts part of the vertical pressure into oblique pressure and transmits it to the bottom of the deep pit. At the same time, the anchor rod assembly 4 provides tension balance for the angled support assembly 3.

[0024] Please refer to Figure 2 and Fig.10 The angled support assembly 3 includes a bottom plate 301, a movable rod 302 and a rotating rod 303. The top of the rotating rod 303 is rotatably connected to a slider. A limiting groove 901 is provided on the outer wall of the L-shaped column 9. A limiting block 902 is installed inside the limiting groove 901. This is suitable for installing the angled support assembly 3 on the L-shaped column 9. The L-shaped column 9 is provided with a limit groove 901, and a limit block 902 is installed inside the limit groove 901. The limit block 902 is connected to the end of the rotating rod 303 through a pin shaft; The limiting groove 901 is a T-shaped groove, the limiting block 902 is a T-shaped block, and the limiting block 902 after installation slides along the limiting groove 901. The L-shaped column 9 is a concrete component, and the limiting groove 901 is formed by pre-embedded channel steel in the L-shaped column 9. The limiting block 902 is a metal block; The top of the rotating rod 303 is slidably connected to the movable frame 304, the bottom of the rotating rod 303 is slidably connected to the movable rod 302, a cavity is provided between the movable frame 304 and the rotating rod 303, an oil inlet pipe 305 is provided on the outer wall of the rotating rod 303, and the oil inlet pipe 305 extends to the inside of the cavity, the bottom plate 301 is installed at the bottom of the movable rod 302, and the lower surface of the bottom plate 301 is set to be toothed; By adopting the above technical solution, lubricating oil is added to the interior of the cavity through the oil inlet pipe 305 and the port of the oil inlet pipe 305 is closed. When the angled support assembly 3 converts part of the vertical pressure into oblique pressure and transmits it to the bottom of the deep pit, the movable rod 302 generates a reverse force on the lubricating oil, thereby pushing the movable frame 304 to move toward the top of the rotating rod 303. The lower surface of the bottom plate 301 is set to be toothed to increase the friction between the lower surface of the bottom plate 301 and the bottom of the deep pit.

[0025] Please refer to Fig.10 A through slot 306 is formed on the lower surface of the rotating rod 303, and the first cable 403 is connected to the movable frame 304 through the through slot 306; By adopting the above technical solution, the oblique pressure of the angled support assembly 3 is further reduced by dispersing the pressure to the first layer of concrete columns 5 and the second layer of concrete columns 6 through the first cable 403 .

[0026] Please refer to Figure 6 , Figure 8 and Fig.10 One end of the anchor assembly 4 is connected to the movable frame 304 through the through slot 306. The anchor assembly 4 includes a connecting block 401. Five plastic tubes 402 are fixedly connected to the upper surface of the connecting block 401. Second cables 404 are arranged inside four of the plastic tubes 402. One end of the second cable 404 is fixedly connected to the connecting block 401. A first cable 403 is arranged inside the remaining plastic tube 402. One end of the first cable 403 is fixedly connected to the connecting block 401. The outer wall of the remaining plastic tube 402 is provided with a plurality of through holes, and concrete is poured into the installation groove 101 through the plurality of through holes to form a first layer of concrete columns 5; By adopting the above technical solution, during the pouring process, concrete flows out from the through hole and fills the installation groove 101, combines with the surrounding soil layer 1, and improves the anchoring ability of the anchor assembly 4. The five plastic tubes 402 are arranged so that the concrete can be filled in two times. The first filled concrete only acts on the first cable 403, preventing the first filled concrete from affecting the second cable 404, thereby affecting the second filling and pouring.

[0027] Please refer to Figure 6 , the diameter of the first cable 403 is greater than the diameter of the plastic tube 402 , the first cable 403 is located inside the four second cables 404 , and the remaining plastic tube 402 is located inside the remaining four plastic tubes 402 ; By adopting the above-mentioned technical solution, this multi-cable structure can increase the tensile strength of the anchor assembly 4. The diameter of the first cable 403 is larger than the diameter of the plastic tube 402 and is located on the inner side of the four second cables 404. This layout is conducive to the reasonable distribution of tension, so that the anchor assembly 4 can withstand the tension more evenly when subjected to force. The first cable 403 is used to cooperate with the angled support assembly 3, and a thicker first cable 403 is required.

[0028] Please refer to Figure 6 , rings 406 are installed on the outer walls of four plastic tubes 402, and a plurality of rope rings 405 are installed on the outer wall of the remaining plastic tube 402, and the rings 406 are close to the outer side of the rope ring 405; By adopting the above technical solution, the rope ring 405 is used to disperse the five plastic pipes 402, and the gaps between them are used to fill with concrete. The setting of the ring 406 is used to compensate for the gap between the plastic pipe 402 and the rope ring 405, so that they can maintain a stable fit and have a better stress effect after concrete pouring.

[0029] Please refer to Figure 6 , Figure 7 and Fig.10The outer walls of the four plastic pipes 402 are connected with a fixed block 407, the inner side of the fixed block 407 is slidably connected with a top block 408, the top of the top block 408 is provided with a conical surface, and the inner wall of the top block 408 is provided with a discharge port 4080. The concrete pushes the top block 408 into the soil and is discharged through the discharge port 4080, and the second layer of concrete column 6 is formed after pouring; By adopting the above technical solution, the conical surface on the top of the top block 408 is conducive to being pushed into the soil when pouring concrete. When pouring concrete, the concrete exerts pressure on the top block 408, and the top block 408 is pushed into the soil. The concrete is discharged through the discharge port 4080 on the inner wall of the top block 408, and a second layer of concrete columns 6 is formed after pouring. The formation of these two layers of concrete columns further enhances the anchoring effect of the anchor assembly 4 in the soil layer 1 and improves its bearing capacity.

[0030] Please refer to Figure 5 and Fig.12 A force-bearing plate 7 is installed on the outer wall of the port of the installation groove 101, and four threaded tubes 701 are connected to the outer wall of the force-bearing plate 7, and four second cables 404 pass through the threaded tubes 701; Wherein, the force-bearing plate 7 is placed on the inclined surface of the boss 1101; By adopting the above technical solution, the four second cables 404 are dispersed and cooperate with the force-bearing plate 7. When there is pressure on the top of the support pile 2, the pressure will be dispersed to the inside of the deep pit. The support pile 2 cooperates with the force-bearing plate 7 and the four second cables 404 to generate interaction force, further reducing the pressure on the support pile 2.

[0031] Please refer to Figure 5 , one end of the four second cables 404 is fixedly connected to a cone 4040; By adopting the above technical solution, the force-bearing plate 7 on the outer wall of the port of the installation groove 101 is connected to the four second cables 404 through the threaded tube 701 , and the cone 4040 fixedly connected at one end of the four second cables 404 interacts with the threaded sleeve 8 .

[0032] Please refer to Figure 5 and Fig.12 The outer wall of the threaded tube 701 is threadedly connected with a threaded sleeve 8, the threaded sleeve 8 is sleeved on the second cable 404, and the cone 4040 limits the threaded sleeve 8; By adopting the above technical solution, the tightness of the cable can be adjusted by rotating the threaded sleeve 8, and when under force, when there is pressure on the top of the support pile 2, the pressure will be dispersed to the inside of the deep pit, and the support pile 2 cooperates with the force plate 7 and the four second cables 404 to generate an interaction force. Through the blocking effect of the cone 4040 and the threaded sleeve 8, the connection stability between the cable and the force plate 7 is guaranteed, thereby effectively transmitting the force between the components.

[0033] Working principle: firstly, the installation groove 101 is opened and tilted, and the anchor rod assembly 4 is located in the installation groove 101 tilted toward the inside of the soil layer 1. This tilted setting helps to utilize the lateral pressure of the soil layer 1 and increase the anchoring effect of the anchor rod assembly 4. When the anchor rod assembly 4 moves along the installation groove 101 to a suitable position inside, due to the tilt of the installation groove 101, the anchor rod assembly 4 can better withstand the force of the support pile 2; During the pouring process, concrete flows out of the through hole and fills the installation groove 101, combines with the surrounding soil layer 1 to form a first layer of concrete column 5, and improves the anchoring ability of the anchor assembly 4. The five plastic tubes 402 are set to allow the concrete to be filled in two times. The concrete filled in the first time only acts on the first cable 403 to prevent the concrete filled in the first time from affecting the second cable 404, thereby affecting the second filling and pouring. This multi-cable structure can increase the tensile strength of the anchor assembly 4. The diameter of the first cable 403 is larger than the diameter of the plastic tube 402 and is located on the inner side of the four second cables 404. This layout is conducive to the reasonable distribution of tension, so that the anchor assembly 4 can withstand tension more evenly when subjected to force. The first cable 403 is used for angled support The assembly 3 needs a thicker first cable 403, and the rope ring 405 is used to disperse the five plastic tubes 402. The gaps between them are filled with concrete. The setting of the ring 406 is used to compensate for the gaps between the plastic tubes 402 and the rope ring 405, so that they can keep fitting and stable, and have a better force effect after concrete pouring. The conical surface on the top of the top block 408 is conducive to being pushed into the soil during concrete pouring. When the concrete is poured, the concrete exerts pressure on the top block 408, and the top block 408 is pushed into the soil. The concrete is discharged through the discharge port 4080 on the inner wall of the top block 408. After pouring, a second layer of concrete column 6 is formed. The formation of these two layers of concrete columns further enhances the anchoring effect of the anchor assembly 4 in the soil layer 1 and improves its bearing capacity. The angled support assembly 3 is installed on the L-shaped column 9, and the first cable 403 is connected to the movable frame 304 through the through groove 306, and is dispersed to the first layer of concrete column 5 and the second layer of concrete column 6 through the first cable 403, thereby further reducing the oblique pressure of the angled support assembly 3; Lubricating oil is added to the interior of the cavity through the oil inlet pipe 305 and the port of the oil inlet pipe 305 is closed. When the angled support assembly 3 converts part of the vertical pressure into oblique pressure and transmits it to the bottom of the deep pit, the movable rod 302 generates a reverse force on the lubricating oil, thereby pushing the movable frame 304 to move toward the top of the rotating rod 303. At this time, the movable frame 304 and the first cable 403 generate an interaction force to reduce the oblique pressure of the angled support assembly 3. The lower surface of the bottom plate 301 is set to be toothed to increase the friction between the lower surface of the bottom plate 301 and the bottom of the deep pit; The four second cables 404 are dispersed and cooperate with the force-bearing plate 7. When there is pressure on the top of the support pile 2, the pressure will be dispersed to the inside of the deep pit. The support pile 2 cooperates with the force-bearing plate 7 and the four second cables 404 to generate an interaction force, further reducing the pressure on the support pile 2. By rotating the threaded sleeve 8, the tightness of the cable can be adjusted. When stress is applied, when there is pressure on the top of the support pile 2, the pressure will be dispersed to the inside of the deep pit. The support pile 2 cooperates with the force-bearing plate 7 and the four second cables 404 to generate an interaction force. The blocking effect of the cone 4040 and the threaded sleeve 8 ensures the stability of the connection between the cable and the force-bearing plate 7, thereby effectively transmitting the force between the components.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A deep foundation pit support structure for construction, comprising a soil layer (1) and support piles (2), wherein a deep pit is opened on the soil layer (1), a plurality of support piles (2) are installed on the inner wall of the soil layer (1), and an L-shaped column (9) is fixedly connected to the top of the support pile (2), characterized in that: A plurality of installation grooves (101) are provided on the inner wall of the soil layer (1), and the installation grooves (101) are arranged to be inclined toward the inside of the soil layer (1); An anchor rod assembly (4) is arranged inside the installation groove (101), and the anchor rod assembly (4) moves along the inside of the installation groove (101) to the inside of the installation groove (101). The anchor rod assembly (4) is provided with a first layer of concrete columns (5) and a second layer of concrete columns (6) for improving the bearing capacity of the anchor rod assembly (4); An angled support assembly (3) is slidably connected to the L-shaped column. The angled support assembly (3) is arranged between the L-shaped column (9) and a base (10) at the bottom of the deep pit. The angled support assembly (3) is arranged in an inclined manner. One end of the anchor rod assembly (4) is connected to the inside of the angled support assembly (3).

2. A deep foundation pit support structure for construction according to claim 1, characterized in that: The angled support assembly (3) comprises a bottom plate (301), a movable rod (302) and a rotating rod (303); the top of the rotating rod (303) is rotatably connected to a sliding block; a limiting groove (901) is provided on the outer wall of the L-shaped column (9); a limiting block (902) is installed in the limiting groove (901); The top of the rotating rod (303) is slidably connected to a movable frame (304), the bottom of the rotating rod (303) is slidably connected to a movable rod (302), a cavity is provided between the movable frame (304) and the rotating rod (303), an oil inlet pipe (305) is provided on the outer wall of the rotating rod (303), the oil inlet pipe (305) extends to the inside of the cavity, the bottom plate (301) is mounted on the bottom of the movable rod (302), and the lower surface of the bottom plate (301) is configured to be toothed.

3. A deep foundation pit support structure for construction according to claim 2, characterized in that: A through slot (306) is formed on the lower surface of the rotating rod (303).

4. A deep foundation pit support structure for construction according to claim 3, characterized in that: One end of the anchor rod assembly (4) is connected to the movable frame (304) via a through groove (306), and the anchor rod assembly (4) comprises a connecting block (401), and five plastic tubes (402) are fixedly connected to the upper surface of the connecting block (401), and second cables (404) are arranged inside four of the plastic tubes (402), and one end of the second cable (404) is fixedly connected to the connecting block (401); and a first cable (403) is arranged inside the remaining plastic tube (402), and one end of the first cable (403) is fixedly connected to the connecting block (401); A plurality of through holes are formed on the outer wall of the remaining plastic tube (402), and concrete is poured into the interior of the installation groove (101) through the plurality of through holes to form a first layer of concrete columns (5).

5. A deep foundation pit support structure for construction according to claim 4, characterized in that: The diameter of the first cable (403) is greater than the diameter of the plastic tube (402); the first cable (403) is located inside the four second cables (404), and the remaining plastic tube (402) is located inside the remaining four plastic tubes (402).

6. A deep foundation pit support structure for construction according to claim 5, characterized in that: Rings (406) are installed on the outer walls of four of the plastic tubes (402), and a plurality of rope-hanging rings (405) are installed on the outer wall of the remaining plastic tube (402), wherein the ring (406) is close to the outer side of the rope-hanging ring (405).

7. A deep foundation pit support structure for construction according to claim 6, characterized in that: The outer walls of the four plastic tubes (402) are connected to a fixing block (407), the inner side of the fixing block (407) is slidably connected to a top block (408), the top of the top block (408) is provided with a conical surface, and the inner wall of the top block (408) is provided with a discharge port (4080), the concrete pushes the top block (408) into the soil and is discharged through the discharge port (4080), and after pouring, a second layer of concrete columns (6) is formed.

8. A deep foundation pit support structure for construction according to claim 7, characterized in that: A force-bearing plate (7) is installed on the outer wall of the port of the installation groove (101), and four threaded tubes (701) are connected to the outer wall of the force-bearing plate (7), and the four second cables (404) pass through the threaded tubes (701).

9. A deep foundation pit support structure for construction according to claim 8, characterized in that: One end of each of the four second cables (404) is fixedly connected to a cone (4040).

10. A deep foundation pit support structure for construction according to claim 9, characterized in that: A threaded sleeve (8) is threadedly connected to the outer wall of the threaded tube (701), and the threaded sleeve (8) is sleeved on the second cable (404), while the cone (4040) limits the threaded sleeve (8).

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