Foundation pit supporting structure for constructional engineering

Abstract

The utility model discloses a building engineering foundation pit supporting structure, which belongs to the technical field of foundation pit supporting and comprises a concrete pile, the top of the concrete pile is rotatably connected with a first adjusting block, one side of a connecting rod far away from a sleeve block is provided with an auxiliary supporting assembly, and one side of a concentric-square-shaped steel frame far away from a first U-shaped steel plate is fixedly connected with a bearing plate. According to the building engineering foundation pit supporting structure, through cooperative use of a threaded rod and a sleeve rod, the distance between a second adjusting block and a first adjusting block is convenient to adjust, so that the height of a concentric-square-shaped steel frame is convenient to adjust, through cooperative use of the sleeve rod and a connecting rod, a movable rod moves at the same time in the moving process of the sleeve rod; the distance between the third adjusting block and the fourth adjusting block is changed at the same time, the side of the concentric-square-shaped steel frame is further obliquely supported, and therefore deformation of a soil body is limited, sedimentation and inclination of the side wall of the foundation pit are reduced, meanwhile, the anti-pressure capacity of the bearing plate is improved, and the stability of the supporting structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit support, and specifically relates to a foundation pit support structure for a construction project. Background Art

[0002] Pit support refers to the process of taking a series of engineering measures to support and reinforce the foundation pit in order to prevent soil collapse around the foundation pit and ensure the safety of surrounding buildings and underground facilities in earthwork projects. Foundation pit support is usually used in underground structure construction, foundation pit excavation and other projects. Its purpose is to ensure project safety, protect the surrounding environment, and maintain the stability of adjacent structures.

[0003] After checking the disclosure (announcement) number: CN207597398U, a foundation pit support structure is disclosed. This technology discloses "including a load-bearing plate and an inclined support rod, a transverse reinforcement column is fixedly arranged on the middle and upper part of the load-bearing plate, a cast-in-place pile is arranged in the foundation pit, the lower end of the inclined support rod is fixedly connected to the top end of the cast-in-place pile, and the upper end of the inclined support rod is fixedly connected to the transverse reinforcement column, the inclined support rod includes a sleeve rod and a sliding rod sleeved in the sleeve rod, the sleeve rod is provided with a slide groove along its axial direction, the sliding rod is provided with a sliding block located in the slide groove and sliding along the slide groove, the sliding block is fixedly provided with a first locking part along the axial direction of the sleeve rod, and the slide groove is provided with a second locking part that cooperates with the first locking part to lock and fix the sliding rod or unlock the sliding rod, and other technical solutions, the length of the inclined support rod can be adjusted to meet the actual needs of the construction site, and there is no need to measure and cut the inclined support rod before assembling and fixing it, which is convenient and fast, and reduces the construction time and other technical effects";

[0004] In the above-mentioned comparative documents, when the foundation pit is deep, local stress concentration may occur on the bonded plate. When supporting the foundation pit, it may be inconvenient to further support the sides of the bonded plate obliquely, thereby increasing the risk of deformation and damage of the supporting structure. At the same time, in the absence of oblique support on both sides, the two sides of the bonded plate may be subjected to large horizontal forces, increasing the risk of displacement of the side wall, which may lead to lateral movement of the soil and affect the stability of the foundation pit.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] In view of the problems in the related technologies, the utility model proposes a foundation pit supporting structure for a construction project to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A foundation pit support structure for a construction project, comprising a concrete pile, wherein a first adjusting block is rotatably connected to the top of the concrete pile, a threaded rod is fixedly connected to the top of the first adjusting block, a sleeve rod is threadedly connected to the outer wall of the threaded rod, a top block is rotatably connected to the top of the sleeve rod, a second adjusting block is fixedly connected to the top of the top block, a first U-shaped steel plate is rotatably connected to the outer wall of the second adjusting block, a round-shaped steel frame is welded to the outer wall of the first U-shaped steel plate, the outer wall of the sleeve rod is rotatably connected to the sleeve block, a connecting rod is fixedly connected to the outer wall of the sleeve block, an auxiliary support assembly is provided on the side of the connecting rod away from the sleeve block, and a receiving plate is fixedly connected to the side of the round-shaped steel frame away from the first U-shaped steel plate;

[0009] The auxiliary support assembly includes a movable rod fixedly connected to the side of the connecting rod away from the sleeve block, the top of the movable rod is fixedly connected to the third adjusting block, the outer wall of the third adjusting block is rotatably connected to the second U-shaped steel frame, the outer wall of the second U-shaped steel frame is welded to the outer wall of the circular steel frame, the inner wall of the movable rod is slidably connected to the support rod, the bottom of the support rod is fixedly connected to the fourth adjusting block, and the outer wall of the fourth adjusting block is rotatably connected to the third U-shaped steel frame.

[0010] Preferably, a first threaded hole is opened inside the support rod, a first bolt is penetrated through the internal thread of the movable rod, and the outer wall thread of the first bolt penetrates through the interior of the support rod.

[0011] By providing the first threaded hole and the first bolt, the position limiting processing of the movable rod after adjustment is achieved.

[0012] Preferably, a square steel plate is detachably mounted on the top of the concrete pile, an L-shaped steel plate is welded to the outer wall of the square steel plate, a square steel is welded to the outer wall of the L-shaped steel plate, and the top of the square steel is welded to the bottom of the third U-shaped steel frame.

[0013] By arranging square steel plates, L-shaped steel plates and square steels, the stability of the support of the circular steel frame by the auxiliary support assembly is increased.

[0014] Preferably, a second threaded hole is opened on the top of the concrete pile, a second bolt penetrates the internal thread of the square steel plate, and the square steel plate is detachably connected to the concrete pile through the second bolt and the second threaded hole.

[0015] By providing the second threaded hole and the second bolt, the square steel plate can be detachably connected to the concrete pile.

[0016] Preferably, a third threaded hole is opened on the outer side of the top of the concrete pile, a third bolt is threadedly penetrated through the outer wall of the L-shaped steel plate, and the L-shaped steel plate is connected to the concrete pile through the third threaded hole and the third bolt.

[0017] By providing the third threaded hole and the third bolt, the L-shaped steel plate and the concrete pile are connected together.

[0018] To sum up, the technical effects and advantages of the utility model are as follows: the foundation pit support structure of the construction project, through the coordinated use of the threaded rod and the sleeve rod, is convenient for adjusting the distance between the second adjustment block and the first adjustment block, thereby facilitating the adjustment of the height of the circular steel frame; through the coordinated use of the sleeve block and the connecting rod, the movable rod moves simultaneously during the movement of the sleeve rod, so that the distance between the third adjustment block and the fourth adjustment block changes simultaneously, and the side of the circular steel frame is further obliquely supported, thereby limiting the deformation of the soil, reducing the settlement and inclination of the side wall of the foundation pit, and at the same time increasing the compressive strength of the receiving plate, thereby improving the stability of the support structure.

[0019] By using the second bolt and the second threaded hole in combination, the square steel plate can be detachably installed on the concrete pile. By using the third threaded hole and the third bolt in combination, the L-shaped steel plate is connected to the concrete pile. By using the square steel plate, the L-shaped steel plate and the square steel in combination, the stability of the bottom of the auxiliary support assembly is further increased, thereby facilitating the auxiliary support assembly to obliquely support the circular steel frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the sleeve rod structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the auxiliary support assembly and its related structures of the utility model;

[0023] Figure 4 It is an exploded schematic diagram of the square steel plate and its related structures of the utility model.

[0024] In the figure: 1, concrete pile; 2, first adjustment block; 3, threaded rod; 4, sleeve rod; 5, top block; 6, second adjustment block; 7, first U-shaped steel plate; 8, circular steel frame; 9, sleeve block; 10, connecting rod;

[0025] 11. Auxiliary support assembly; 111. Active rod; 112. Third adjustment block; 113. Second U-shaped steel frame; 114. Support rod; 115. Fourth adjustment block; 116. Third U-shaped steel frame; 117. First threaded hole; 118. First bolt;

[0026] 12. Socket plate; 13. Square steel plate; 14. L-shaped steel plate; 15. Square steel; 16. Second threaded hole; 17. Second bolt; 18. Third threaded hole; 19. Third bolt; 20. V-shaped steel frame; 21. Movable handle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-3 A foundation pit support structure for a construction project comprises a concrete pile 1, the top of the concrete pile 1 is rotatably connected with a first adjusting block 2, the top of the first adjusting block 2 is fixedly connected with a threaded rod 3, the outer wall of the threaded rod 3 is threadedly connected with a sleeve rod 4, the outer wall of the threaded rod 3 is adapted to the inner wall of the sleeve rod 4, the top of the sleeve rod 4 is rotatably connected with a top block 5, the threaded rod 3, the sleeve rod 4 and the top block 5 are coaxial, the top of the top block 5 is fixedly connected with a second adjusting block 6, the outer wall of the second adjusting block 6 is rotatably connected with a first U-shaped steel plate 7, the cross section of the first U-shaped steel plate 7 is U-shaped, the outer wall of the first U-shaped steel plate 7 is welded with a round-shaped steel frame 8, the longitudinal section of the round-shaped steel frame 8 is round-shaped, and the outer wall of the sleeve rod 4 A sleeve block 9 is rotatably connected, and the sleeve block 9 is coaxial with the sleeve rod 4. A connecting rod 10 is fixedly connected to the outer wall of the sleeve block 9. Two connecting rods 10 are provided, and the two connecting rods 10 are symmetrically distributed with the central axis of the sleeve block 9 as the center. An auxiliary support assembly 11 is provided on the side of the connecting rod 10 away from the sleeve block 9, and a receiving plate 12 is fixedly connected to the side of the circular steel frame 8 away from the first U-shaped steel plate 7. After the first adjustment block 2 is installed on the concrete pile 1, the sleeve rod 4 is rotated and moved in the direction away from the first adjustment block 2 through the threaded rod 3, and the top block 5 drives the second adjustment block 6 to move accordingly, so as to adjust the distance between the second adjustment block 6 and the first adjustment block 2, so as to facilitate the installation of the circular steel frame 8 at positions of different heights;

[0029] The auxiliary support assembly 11 includes a movable rod 111 fixedly connected to the side of the connecting rod 10 away from the sleeve block 9. The auxiliary support assembly 11 is provided with two groups. The two groups of auxiliary support assemblies 11 are located at the edge of one side of the circular steel frame 8 away from the receiving plate 12 and are symmetrically distributed. The top of the movable rod 111 is fixedly connected to a third adjustment block 112, and the outer side wall of the third adjustment block 112 is rotatably connected to a second U-shaped steel frame 113. The outer side wall of the second U-shaped steel frame 113 is welded to the outer side wall of the circular steel frame 8. The inner side wall of the movable rod 111 is slidably connected to a support rod 114, and the outer periphery of the support rod 114 is connected to the inner periphery of the movable rod 111 Equally, the bottom of the support rod 114 is fixedly connected to the fourth adjustment block 115, and the outer wall of the fourth adjustment block 115 is rotatably connected to the third U-shaped steel frame 116. When the sleeve rod 4 moves, the sleeve block 9 drives the connecting rod 10 to move, and the movable rod 111 moves accordingly, so that the distance between the third adjustment block 112 and the fourth adjustment block 115 changes, so that the length of the threaded rod 3 and the sleeve rod 4 changes and the distance between the third adjustment block 112 and the fourth adjustment block 115 changes accordingly, so that the auxiliary support assembly 11 stably obliquely supports the edge of the side of the circular steel frame 8 away from the receiving plate 12.

[0030] Reference Figure 1 and Figure 3 A first threaded hole 117 is provided inside the support rod 114, and two groups of first threaded holes 117 are provided. Each group of first threaded holes 117 is located on each support rod 114 and is distributed in a linear array. The internal thread of the movable rod 111 is penetrated by a first bolt 118, and the outer wall thread of the first bolt 118 penetrates the interior of the support rod 114. After the movable rod 111 is adjusted to a suitable position, the first threaded hole 117 and the first bolt 118 are used in conjunction to limit the position of the movable rod 111 after adjustment.

[0031] Reference Figure 1 , Figure 2 and Figure 4 A square steel plate 13 is detachably installed on the top of the concrete pile 1. A circular hole equal to the outer circumference of the top of the concrete pile 1 is opened at the inner center of the square steel plate 13. An L-shaped steel plate 14 is welded to the outer wall of the square steel plate 13. The longitudinal section of the L-shaped steel plate 14 is L-shaped. Two L-shaped steel plates 14 are provided. The two L-shaped steel plates 14 are symmetrically distributed with the central axis of the square steel plate 13 as the center. Square steels 15 are welded to the outer wall of the L-shaped steel plate 14. The number of L-shaped steel plates 14 and square steels 15 is equal. The top of the square steel 15 is welded to the bottom of the third U-shaped steel frame 116. The square steel plate 13, the L-shaped steel plate 14 and the square steel 15 further support the bottom of the auxiliary support assembly 11, thereby increasing the stability of the auxiliary support assembly 11 in obliquely supporting the circular steel frame 8.

[0032] Reference Figure 1 and Figure 4A second threaded hole 16 is provided at the top of the concrete pile 1, and a second bolt 17 is penetrated through the internal thread of the square steel plate 13. The inner wall of the second threaded hole 16 is adapted to the outer wall of the second bolt 17. The square steel plate 13 is detachably connected to the concrete pile 1 through the second bolt 17 and the second threaded hole 16. The second threaded hole 16 and the second bolt 17 facilitate the detachable installation of the square steel plate 13 on the concrete pile 1.

[0033] Reference Figure 1 and Figure 4 A third threaded hole 18 is opened on the outer side of the top of the concrete pile 1, and a third bolt 19 is threaded through the outer wall of the L-shaped steel plate 14. The inner wall of the third threaded hole 18 is matched with the outer wall of the third bolt 19. The L-shaped steel plate 14 is connected to the concrete pile 1 through the third threaded hole 18 and the third bolt 19. The third threaded hole 18 and the third bolt 19 further stabilize the position of the L-shaped steel plate 14.

[0034] Reference Figure 1 A V-shaped steel frame 20 is welded to the inner wall of the circular steel frame 8, and the longitudinal section of the V-shaped steel frame 20 is V-shaped. Two V-shaped steel frames 20 are provided, and the two V-shaped steel frames 20 are symmetrically distributed around the central axis of the circular steel frame 8. The V-shaped steel frame 20 further increases the compressive resistance of the circular steel frame 8.

[0035] Reference Figure 2 A movable handle 21 is fixedly connected to the outer side of the bottom of the sleeve rod 4. The movable handle 21 is located on the outer side of the bottom of the sleeve rod 4. After the movable handle 21 rotates, the sleeve rod 4 moves upward as the outer part of the threaded rod 3 rotates.

[0036] Working principle: First, pour concrete into the bottom of the foundation pit to form a concrete pile 1, and reserve a second threaded hole 16 and a third threaded hole 18 on the concrete pile 1, connect the square steel plate 13 and the L-shaped steel plate 14 to the concrete pile 1 through the second bolt 17 and the third bolt 19 respectively, install the first adjustment block 2 on the top of the concrete pile 1 before the concrete pile 1 solidifies, and the bottom of the first adjustment block 2 is rotatably connected to the top of the concrete pile 1, and the sleeve rod 4 is driven to rotate through the movable handle 21, and the top block 5 drives the second adjustment block 6 to move, thereby adjusting the top block 5 and the first adjustment block 6. The distance between the first and second adjustment blocks 2 is adjusted, and the circular steel frame 8 is moved and adjusted to a suitable height, so that the receiving plate 12 is in close contact with the side of the foundation pit. The sleeve rod 4 moves and drives the sleeve block 9 to move, and the connecting rod 10 drives the movable rod 111 to move, and the distance between the third adjustment block 112 and the fourth adjustment block 115 is adjusted. Through the coordinated use of the third U-shaped steel frame 116 and the second U-shaped steel frame 113, the angle of the movable rod 111 changes during the position adjustment of the circular steel frame 8, thereby facilitating the further support of the two side edges of the receiving plate 12.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foundation pit support structure for a construction project, comprising a concrete pile (1), characterized in that: The top of the concrete pile (1) is rotatably connected to a first adjusting block (2), the top of the first adjusting block (2) is fixedly connected to a threaded rod (3), the outer wall of the threaded rod (3) is threadedly connected to a sleeve rod (4), the top of the sleeve rod (4) is rotatably connected to a top block (5), the top of the top block (5) is fixedly connected to a second adjusting block (6), the outer wall of the second adjusting block (6) is rotatably connected to a first U-shaped steel plate (7), the outer wall of the first U-shaped steel plate (7) is welded with a round-shaped steel frame (8), the outer wall of the sleeve rod (4) is rotatably connected to a sleeve block (9), the outer wall of the sleeve block (9) is fixedly connected to a connecting rod (10), the side of the connecting rod (10) away from the sleeve block (9) is provided with an auxiliary support assembly (11), and the side of the round-shaped steel frame (8) away from the first U-shaped steel plate (7) is fixedly connected to a receiving plate (12); The auxiliary support assembly (11) comprises a movable rod (111) fixedly connected to a side of the connecting rod (10) away from the sleeve block (9); the top of the movable rod (111) is fixedly connected to a third adjustment block (112); the outer wall of the third adjustment block (112) is rotatably connected to a second U-shaped steel frame (113); the outer wall of the second U-shaped steel frame (113) is welded to the outer wall of the circular steel frame (8); the inner wall of the movable rod (111) is slidably connected to a support rod (114); the bottom of the support rod (114) is fixedly connected to a fourth adjustment block (115); the outer wall of the fourth adjustment block (115) is rotatably connected to the third U-shaped steel frame (116).

2. A construction engineering foundation pit support structure according to claim 1, characterized in that: A first threaded hole (117) is provided inside the support rod (114), a first bolt (118) is passed through the internal thread of the movable rod (111), and the outer wall thread of the first bolt (118) passes through the interior of the support rod (114).

3. A construction engineering foundation pit support structure according to claim 1, characterized in that: A square steel plate (13) is detachably mounted on the top of the concrete pile (1), an L-shaped steel plate (14) is welded to the outer wall of the square steel plate (13), a square steel (15) is welded to the outer wall of the L-shaped steel plate (14), and the top of the square steel (15) is welded to the bottom of the third U-shaped steel frame (116).

4. A construction engineering foundation pit support structure according to claim 3, characterized in that: A second threaded hole (16) is provided at the top of the concrete pile (1), a second bolt (17) penetrates through the internal thread of the square steel plate (13), and the square steel plate (13) is detachably connected to the concrete pile (1) via the second bolt (17) and the second threaded hole (16).

5. A construction engineering foundation pit support structure according to claim 3, characterized in that: A third threaded hole (18) is provided on the outer side of the top of the concrete pile (1), a third bolt (19) is threadedly penetrated through the outer wall of the L-shaped steel plate (14), and the L-shaped steel plate (14) is connected to the concrete pile (1) via the third threaded hole (18) and the third bolt (19).

6. A construction engineering foundation pit support structure according to claim 1, characterized in that: A V-shaped steel frame (20) is welded to the inner side wall of the circular steel frame (8), and the longitudinal section of the V-shaped steel frame (20) is V-shaped.

7. A construction engineering foundation pit support structure according to claim 1, characterized in that: A movable handle (21) is fixedly connected to the outer side of the bottom of the sleeve rod (4).

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