Special-shaped ultra-deep foundation pit support displacement monitoring system
By designing a foundation pit side wall reinforcement, anti-pullout and monitoring system in special-shaped ultra-deep foundation pits, using mortar to drive the anti-pullout parts to rotate to form anti-pullout feet, and combining it with inclination sensor monitoring, the difficult problems of special-shaped ultra-deep foundation pit corner reinforcement and monitoring were solved, and efficient and safe support and monitoring effects were achieved.
Patent Information
- Application Number
- CN202511108406.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-09-12
AI Technical Summary
Existing technologies make it difficult to effectively reinforce the corners of irregular and ultra-deep foundation pits, and the displacement monitoring system of the support structure is complex to deploy, making it difficult to achieve accurate and efficient monitoring of key parts, resulting in high safety risks.
A special-shaped ultra-deep foundation pit support displacement monitoring system was designed, which includes a foundation pit sidewall reinforcement part, an anti-pullout part and a monitoring part. The parts are connected by reinforcement rods, and the mortar-driven auxiliary blocks are used to drive the anti-pullout parts to rotate, forming a multi-level anti-pullout foot. The inclination sensor is combined to monitor the corner stability, realizing fast and reliable support and monitoring.
It significantly improves the stability and monitoring accuracy of special-shaped ultra-deep foundation pit corners, reduces construction complexity, and improves safety during construction and operation.
Smart Images
Figure CN120625673A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of displacement monitoring of special-shaped foundation pits, and in particular to a special-shaped ultra-deep foundation pit support displacement monitoring system. Background Art
[0002] With the acceleration of urbanization and the growing demand for underground space development, deep foundation pit projects are becoming increasingly common, particularly those with irregular shapes (such as those with continuous corners). These corners often present significant stress concentration and complex deformation coordination issues, making them high-risk areas in foundation pit projects. Ultra-deep foundation pits, exceeding conventional depths, face even greater support challenges, particularly in ensuring the deep stability of the pit sidewalls. Conventional foundation pit support structures are overly complex and often require significant floor space to reinforce corners, as these areas are prone to stress concentration and excessive deformation. Furthermore, irregular pits are often compact and inconvenient to use. Furthermore, existing systems for monitoring the displacement of support structures are often complex to deploy, and the accuracy and timeliness of monitoring critical areas (such as corners and joints) need to be improved, making it difficult to detect signs of localized instability in a timely manner. Therefore, there is an urgent need for an integrated support and monitoring system designed specifically for special-shaped and ultra-deep foundation pits, which can effectively enhance corner stability and achieve accurate and efficient monitoring of the displacement of key parts, thereby significantly improving the safety during foundation pit construction and operation. Summary of the Invention
[0003] In order to solve the above problems, the present invention provides a special-shaped ultra-deep foundation pit support displacement monitoring system.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a special-shaped ultra-deep foundation pit support displacement monitoring system includes a foundation pit side wall reinforcement part, an anti-pullout part and a monitoring part, the foundation pit side wall reinforcement part is fixed to the outside of the foundation pit corner and two connected side surfaces, the anti-pullout part is inclined and arranged on a side away from the foundation pit side wall reinforcement part, a transverse reinforcement rod is connected between the anti-pullout part and the foundation pit side wall reinforcement part, the monitoring part includes a transverse monitoring module and a longitudinal monitoring module, the transverse monitoring module is arranged on the reinforcement rod, and the longitudinal monitoring module is arranged on the foundation pit side wall reinforcement part; The anti-pullout part includes an anti-pullout rod, the upper end of the anti-pullout rod is connected to the outer end of the reinforcement rod, and several groups of reinforcement holes are opened along the length direction of the anti-pullout rod. The reinforcement holes are rotatably connected with anti-pullout parts, and the interior of the anti-pullout rod is slidingly arranged on an auxiliary block. Mortar is poured through the upper end of the anti-pullout rod, and the mortar pushes the auxiliary block to move downward along the anti-pullout rod. The auxiliary block pushes multiple groups of anti-pullout parts to rotate outward in turn, and at the same time, the mortar flows outward through the reinforcement holes to form anti-pullout feet on the outside of the anti-pullout rod.
[0005] As an optimization, the side wall reinforcement part of the foundation pit includes a right-angle reinforcement plate and two side reinforcement components. The right-angle reinforcement plate is fixed to the outside of the corner of the foundation pit, and the two side reinforcement components are respectively connected to the two sides of the right-angle reinforcement plate. The side reinforcement components include several inclined side pull rods and a bottom fixing frame. The side pull rods are arranged in contact with the side wall of the foundation pit, and the side pull rods are connected between the right-angle reinforcement plate and the bottom fixing frame.
[0006] As an optimization, a plurality of limiting holes are arranged in the length direction of the reinforcement rod, the limiting holes are arranged with reinforcement screws, and the transverse monitoring module is arranged at the upper end of the reinforcement screws.
[0007] As an optimization, the longitudinal monitoring module includes an inclination sensor, which is arranged on the outside of the right-angle reinforcement plate; A connecting plate is disposed on the upper portion of the right-angle reinforcing plate, and the upper ends of the side pull rods are connected to the connecting plate.
[0008] As an optimization, the bottom fixing frame is laid horizontally at the bottom of the foundation pit side wall.
[0009] As an optimization, when using it, first open an inclined fixing hole away from the corner of the foundation pit, and the fixing hole is used to accommodate the anti-pullout rod; A through hole is provided at the lower part of the anti-pullout rod, and the distance between the through hole and the bottom of the anti-pullout rod is greater than the height of the auxiliary block. After the mortar reaches the through hole, it flows outward through the through hole into between the anti-pullout rod and the fixing hole.
[0010] As an optimization, the lower portion of the anti-pullout member is bent in a direction away from the anti-pullout rod to form a pointed end. When the anti-pullout member rotates outward, the pointed end penetrates outward into the geological layer.
[0011] As an optimization, the lower end of the anti-pullout rod is inclined toward the side away from the reinforcement portion of the foundation pit side wall, and the reinforcement rod is arranged parallel to the top of the foundation pit.
[0012] The beneficial effects of this program are as follows: By installing a sidewall reinforcement section consisting of right-angle reinforcement plates, bottom fixing frames, and side tie rods, and effectively connecting it to the pull-out section via reinforcement rods, a highly integrated support system is formed. This system can effectively disperse stress concentration at corners, enhance the deep stability of the sidewall, and resist lateral pressure from the soil. By pouring mortar, internal auxiliary blocks are moved, triggering the outward rotation of multiple groups of pullout members. This mechanical linkage cleverly utilizes fluid drive and mechanical structure to achieve simultaneous deployment and formation of multiple levels of pullout legs. This not only speeds up construction but also provides a uniform and reliable anchoring effect.
[0013] The pointed tip at the bottom of the pullout member allows it to penetrate deeper and more easily into the surrounding soil during deployment, significantly improving pullout and shear resistance. Furthermore, the mortar not only drives the auxiliary block but also flows outward from the reinforcement hole, wrapping around the pullout bar, further improving the bond between the anchor and the soil, density, and overall strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is an axial side schematic diagram of the present invention in use.
[0015] Figure 2 This is a top view of the present invention in use.
[0016] Figure 3 For the present invention Figure 2 AA cross-section structure diagram.
[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of part B.
[0018] Figure 5 It is a schematic diagram of the axial side of the present invention.
[0019] Among them, 1. Reinforcement rod, 2. Anti-pull-out rod, 3. Reinforcement hole, 4. Anti-pull-out part, 5. Auxiliary block, 6. Right-angle reinforcement plate, 7. Side pull rod, 8. Bottom fixing frame, 9. Reinforcement screw, 10. Horizontal monitoring module, 11. Longitudinal monitoring module, 12. Connecting plate, 13. Fixing hole, 14. Through hole. DETAILED DESCRIPTION
[0020] like Figure 1-Figure 5 As shown, the special-shaped ultra-deep foundation pit support displacement monitoring system includes a foundation pit side wall reinforcement part, an anti-pullout part and a monitoring part. The foundation pit side wall reinforcement part is fixed to the outside of the foundation pit corner and two connected side surfaces. The anti-pullout part is tilted and arranged on the side away from the foundation pit side wall reinforcement part. A transverse reinforcement rod 1 is connected between the anti-pullout part and the foundation pit side wall reinforcement part. The monitoring part includes a transverse monitoring module 10 and a longitudinal monitoring module 11. The transverse monitoring module 10 is configured on the reinforcement rod 1, and the longitudinal monitoring module 11 is configured on the foundation pit side wall reinforcement part. The anti-pullout part includes an anti-pullout rod 2, the upper end of the anti-pullout rod 2 is connected to the outer end of the reinforcement rod 1, and several groups of reinforcement holes 3 are opened along the length direction of the anti-pullout rod 2. The reinforcement holes 3 are rotatably connected with anti-pullout parts 4. The interior of the anti-pullout rod 2 is slidably set on an auxiliary block 5. Mortar is poured through the upper end of the anti-pullout rod 2. The mortar pushes the auxiliary block 5 to move downward along the anti-pullout rod 2. The auxiliary block 5 pushes multiple groups of anti-pullout parts 4 to rotate outward in turn. At the same time, the mortar flows outward through the reinforcement holes 3 to form anti-pullout feet on the outside of the anti-pullout rod 2.
[0021] The corners of the foundation pit are reinforced and supported by the foundation pit side wall reinforcement part, and the foundation pit side wall reinforcement part is tightened and fixed by the anti-pullout part and the reinforcement rod 1 to improve the fixing effect.
[0022] The system deploys transverse and longitudinal monitoring modules 11 along key paths of mechanical transmission (reinforcement rods 1) and at key nodes (corner reinforcement plates). Transverse monitoring module 10, located at reinforcement rod 1 (e.g., on reinforcement screws 9), directly captures transverse deformation or displacement of the key component connecting the sidewall reinforcement and the pull-out resistance section, reflecting the lateral stability of the overall system. Longitudinal monitoring module 11, installed on right-angle reinforcement plates 6 (e.g., inclination sensors), is specifically designed to monitor corners, a high-risk area, for potential tilting or vertical settlement / uplift.
[0023] The entire system (sidewall reinforcement, pullout resistance, and monitoring) is tightly interconnected and interoperable, forming an integrated whole. The support structure provides a reliable foundation for monitoring, while the monitoring system provides real-time feedback on the support structure's safety status. The two complement each other to ensure the safety of deep foundation pits.
[0024] like Figure 1 As shown, the side wall reinforcement part of the foundation pit includes a right-angle reinforcement plate 6 and two side reinforcement components. The right-angle reinforcement plate 6 is fixed to the outside of the foundation pit corner, and the two side reinforcement components are respectively connected to the two sides of the right-angle reinforcement plate 6. The side reinforcement components include a number of inclined side pull rods 7 and a bottom fixing frame 8. The side pull rods 7 are arranged in contact with the side wall of the foundation pit, and the side pull rods 7 are connected between the right-angle reinforcement plate 6 and the bottom fixing frame 8.
[0025] The side railings and the bottom fixing frame 8 are arranged in close contact with the side walls of the foundation pit, which can effectively reduce the floor space occupied by the support structure and save construction space in the foundation pit.
[0026] According to the width of the foundation pit sidewall, a bottom fixing frame 8 of appropriate length and a suitable number of side pull rods 7 are provided. Correspondingly, the side pull rods 7 can also be equipped with mechanisms such as protective nets to prevent falling rocks.
[0027] like Figure 1 As shown, the reinforcement rod 1 is provided with a plurality of limiting holes in its length direction, the limiting holes are provided with reinforcement screws 9 , and the transverse monitoring module 10 is provided at the upper end of the reinforcement screws 9 .
[0028] The lateral monitoring module 10 may be an inclination sensor or a distance sensor. When the lateral monitoring module 10 is a distance sensor, a receiver for receiving measurement signals should also be provided on the top of the foundation pit to determine the displacement distance.
[0029] like Figure 1As shown, the longitudinal monitoring module 11 includes an inclination sensor, which is arranged on the outside of the right-angle reinforcement plate 6; A connecting plate 12 is disposed on the upper portion of the right-angle reinforcing plate 6 , and the upper end of the side tie rod 7 is connected to the connecting plate 12 .
[0030] The lateral monitoring module 10 and the longitudinal monitoring module 11 transmit the monitoring information to the data center via the wireless transmission module. The longitudinal monitoring module 11 can be a dual-axis tilt sensor to monitor the vertical settlement and horizontal tilt of the corner of the foundation pit in real time.
[0031] like Figure 1 As shown, the bottom fixing frame 8 is horizontally laid on the bottom of the foundation pit side wall.
[0032] like Figure 3 and Figure 4 As shown, when in use, first open an inclined fixing hole 13 away from the corner of the foundation pit, and the fixing hole 13 is used to accommodate the anti-pullout rod 2; A through hole 14 is provided at the lower portion of the anti-pullout rod 2 . The distance between the through hole 14 and the bottom of the anti-pullout rod 2 is greater than the height of the auxiliary block 5 . After the mortar reaches the through hole 14 , it flows outward through the through hole 14 into between the anti-pullout rod 2 and the fixing hole 13 .
[0033] A retaining ring is provided at the upper end of the anti-pullout rod 2, and a connecting ring is provided at the end of the reinforcement rod 1. The anti-pullout rod 2 passes through the connecting ring and extends downward. The retaining ring is provided on the upper side of the connecting ring. The outer periphery of the auxiliary block 5 is in contact and sealed with the inner wall of the anti-pullout rod 2. During grouting, the mortar can push the auxiliary block 5 to slide freely.
[0034] As shown in FIG4 , the lower portion of the anti-pullout member 4 is bent away from the anti-pullout rod 2 to form a pointed end. When the anti-pullout member 4 rotates outward, the pointed end penetrates outward into the geological layer.
[0035] The length of the anti-pullout member 4 is preferably such that it can be rotated outward and inserted into the geological layer, and is specifically set according to actual use conditions.
[0036] like Figure 3 As shown, the lower end of the anti-pullout rod 2 is inclined toward the side away from the reinforcement portion of the foundation pit side wall, and the reinforcement rod 1 is arranged parallel to the top of the foundation pit.
[0037] Directions: When in use, first open a fixing hole 13 away from the corner of the foundation pit to accommodate the anti-extraction pipe; Connect the reinforcement part of the foundation pit side wall to the outside of the foundation pit corner, the side tie rods 7 are distributed along the foundation pit side wall, and the bottom fixing frame 8 is fixed to the bottom of the foundation pit side wall and fixed by expansion bolts or anchor bolts; Connect the reinforcement rod 1 between the reinforcement part of the foundation pit side wall and the anti-pullout rod 2, and fix the reinforcement bolts through the limit holes and the top of the foundation pit; The anti-pullout rod 2 is passed through the outer end of the reinforcement rod 1 and extended into the interior of the fixing hole 13. The auxiliary block 5 is added to the interior of the anti-pullout rod 2 from top to bottom, and grouting is injected into the interior of the anti-pullout rod 2. The mortar pushes the auxiliary block 5 downward, and the auxiliary block 5 pushes the multiple groups of anti-pullout members 4 to rotate outward in turn. The tips of the anti-pullout members 4 penetrate into the geological layer. The mortar is simultaneously passed through the reinforcement hole 3 and filled into the gap between the anti-pullout rod 2 and the fixing hole 13. After the auxiliary block 5 moves to the bottom of the anti-pullout rod 2, the mortar flows outward through the through hole 14 to fill the gap between the anti-pullout rod 2 and the fixing hole 13, so that the mortar covers the outside of the anti-pullout rod 2; Complete the distribution of the lateral monitoring module 10 and the longitudinal monitoring module 11, and test the signal transmission performance; When the foundation pit slides or collapses, the lateral monitoring module 10 and the longitudinal monitoring module 11 can monitor the deformation of the top and sides of the foundation pit in a timely manner and transmit the signal to the monitoring personnel in a timely manner so that protective measures can be taken as soon as possible.
[0038] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any special-shaped ultra-deep foundation pit support displacement monitoring system that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.
Claims
1. Special-shaped ultra-deep foundation pit support displacement monitoring system, characterized by: The invention comprises a foundation pit side wall reinforcement part, an anti-pulling part and a monitoring part, wherein the foundation pit side wall reinforcement part is fixed to the outside of the foundation pit corner and two connected side surfaces, the anti-pulling part is arranged obliquely on a side away from the foundation pit side wall reinforcement part, a transverse reinforcement rod (1) is connected between the anti-pulling part and the foundation pit side wall reinforcement part, and the monitoring part comprises a transverse monitoring module (10) and a longitudinal monitoring module (11), the transverse monitoring module is arranged on the reinforcement rod (1), and the longitudinal monitoring module (11) is arranged on the foundation pit side wall reinforcement part; The anti-pullout part comprises an anti-pullout rod (2), the upper end of the anti-pullout rod (2) is connected to the outer end of the reinforcement rod (1), and a plurality of groups of reinforcement holes (3) are opened along the length direction of the anti-pullout rod (2). The reinforcement holes (3) are rotatably connected to anti-pullout members (4). The interior of the anti-pullout rod (2) is slidably arranged on an auxiliary block (5). Mortar is poured through the upper end of the anti-pullout rod (2), and the mortar pushes the auxiliary block (5) to move downward along the anti-pullout rod (2). The auxiliary block (5) pushes the plurality of groups of anti-pullout members (4) to rotate outward in sequence. At the same time, the mortar flows outward through the reinforcement holes (3) to form an anti-pullout foot on the outer side of the anti-pullout rod (2).
2. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 1 is characterized by: The side wall reinforcement portion of the foundation pit includes a right-angle reinforcement plate (6) and two side reinforcement components. The right-angle reinforcement plate (6) is fixed to the outside of the corner of the foundation pit. The two side reinforcement components are respectively connected to the two sides of the right-angle reinforcement plate (6). The side reinforcement components include a plurality of inclined side pull rods (7) and a bottom fixing frame (8). The side pull rods (7) are arranged in contact with the side wall of the foundation pit. The side pull rods (7) are connected between the right-angle reinforcement plate (6) and the bottom fixing frame (8).
3. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 1 is characterized by: The reinforcing rod (1) is provided with a plurality of limiting holes in its length direction, the limiting holes are provided with reinforcing screw rods (9), and the transverse monitoring module (10) is provided at the upper end of the reinforcing screw rods (9).
4. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 2 is characterized by: The longitudinal monitoring module (11) includes an inclination sensor, and the inclination sensor is arranged on the outside of the right-angle reinforcement plate (6); A connecting plate (12) is provided on the upper portion of the right-angle reinforcing plate (6), and the upper end of the side tie rod (7) is connected to the connecting plate (12).
5. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 2 is characterized by: The bottom fixing frame (8) is horizontally laid on the bottom of the foundation pit side wall.
6. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 1 is characterized by: When in use, firstly, an inclined fixing hole (13) is opened at a corner away from the foundation pit, and the fixing hole (13) is used to accommodate the anti-pullout rod (2); A through hole (14) is provided at the bottom of the anti-pullout rod (2), and the distance between the through hole (14) and the bottom of the anti-pullout rod (2) is greater than the height of the auxiliary block (5). After the mortar reaches the through hole (14), it flows outward through the through hole (14) into the space between the anti-pullout rod (2) and the fixing hole (13).
7. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 1 is characterized by: The lower portion of the anti-pullout member (4) is bent in a direction away from the anti-pullout rod (2) to form a pointed end. When the anti-pullout member (4) rotates outward, the pointed end penetrates outward into the geological layer.
8. The special-shaped ultra-deep foundation pit support displacement monitoring system according to claim 1 is characterized by: The lower end of the anti-pullout rod (2) is inclined toward a side away from the reinforcement portion of the foundation pit side wall, and the reinforcement rod (1) is arranged parallel to the top of the foundation pit.