Anchor rod and secant pile intelligent combined anti-floating structure of underground deeply-buried circular water taking pump room
By combining anchor bolts and interlocking piles in an anti-buoyancy structure with an intelligent water injection system, the problems of insufficient anti-buoyancy and construction difficulties in deeply buried structures are solved, achieving an economical and efficient anti-buoyancy effect and ensuring the stability and safety of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-03
AI Technical Summary
Existing anti-buoyancy measures are insufficient in terms of economy and safety, especially for deeply buried structures where the anti-buoyancy is insufficient, construction is difficult, material usage is uneconomical, and the structure is easily damaged by compression.
A combined anti-buoyancy structure of anchor bolts and interlocking piles is adopted, combined with an intelligent water injection system. The anti-buoyancy situation is monitored by tension and pressure sensors, and the water injection volume is adjusted in real time to improve the anti-buoyancy capability.
It achieves improved buoyancy resistance without increasing structural thickness, ensures structural stability, saves materials, avoids resource waste, adapts to changes in groundwater level, and provides an economical and safe buoyancy resistance solution.
Smart Images
Figure CN223963959U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underground structure stability and anti-buoyancy technology in geotechnical engineering, and in particular to an intelligent combined anti-buoyancy structure of anchor bolts and interlocking piles for a deep underground circular water intake pump house. Background Technology
[0002] Currently, there are three anti-buoyancy solutions for this type of structure: First, anti-buoyancy is achieved by using only the structure's own weight, that is, by increasing the thickness of the structural slab while meeting the structural stress requirements, so that the total weight meets the anti-buoyancy requirements; second, anti-buoyancy piles or anti-buoyancy anchors are installed on the bottom slab of the structure, and the frictional resistance after the piles or anchors are inserted into the soil is used for anti-buoyancy; third, the capping beam of the retaining piles is used to participate in the anti-buoyancy of the structure.
[0003] The above-mentioned anti-buoyancy measures have the following drawbacks: First, although the self-weight anti-buoyancy method can solve the anti-buoyancy problem simply and crudely, in addition to meeting the structural stress requirements, it increases the thickness of the structural plate only to increase the weight for anti-buoyancy, which leads to excessive use of materials, thereby increasing the cost and violating the original intention of adopting a circular structure type to save materials; Second, using anti-buoyancy piles or anti-buoyancy anchors can also achieve the effect of structural anti-buoyancy, but for deeply buried structures, the working space is limited, and in addition, the construction schedule is tight, which is not conducive to the construction of a large number of pile groups. Sometimes, due to the insufficient pull-out force provided by the anti-buoyancy anchors, this scheme cannot achieve an effective anti-buoyancy effect; Third, when using interlocking pile cap beams, they only play a formal role when the structure floats up under the action of water buoyancy and generates resistance. At this time, the structure itself is also subjected to a certain compression effect and slight deformation. If the stiffness of the upper part of the structure is small, it is easy to be damaged. In addition, the existence of the cap beam is an obstacle to the construction of subsequent adjacent structures on the ground.
[0004] Therefore, existing anti-buoyancy measures cannot effectively balance economy and safety, and further improvements are needed. Utility Model Content
[0005] In view of the above, it is necessary to provide an intelligent combined anti-buoyancy structure of anchor bolts and interlocking piles for underground deep-buried circular water intake pumping stations. This structure can combine the pull-out resistance of anchor bolts and interlocking piles to resist buoyancy, and with the automatic water injection of the intelligent water injection anti-buoyancy system, it can greatly improve the anti-buoyancy capacity and achieve the effects of improving economy and safety.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] The intelligent combined anti-buoyancy structure of the underground deep-buried circular water intake pump house with anchor bolts and interlocking piles includes the main foundation pit, foundation pit interlocking piles, anti-buoyancy anchor bolts, anti-buoyancy brackets, ring beams, and intelligent water injection anti-buoyancy system;
[0008] The bottom slab of the main foundation pit is equipped with several anti-buoyancy anchors, which are spaced apart, and each anti-buoyancy anchor extends from the bottom slab of the main foundation pit downwards from the bottom slab; the outer wall of the main foundation pit is provided with anti-buoyancy brackets;
[0009] The interlocking piles of the foundation pit are arranged around the outside of the main foundation pit, and the ring beam is arranged on the inside of the piles. The ring beam contacts the anti-buoyancy bracket through the ring beam. The ring beam at the anti-buoyancy bracket is located at the top of the anti-buoyancy bracket.
[0010] The intelligent water injection anti-buoyancy system includes a tension sensor, a pressure sensor, a data processing center, a water injection pipe, and a water injection pump. The tension sensor is installed on the anti-buoyancy anchor rod to monitor the tension force on the anti-buoyancy anchor rod. The pressure sensor is installed at the contact point between the anti-buoyancy bracket and the ring beam. The data processing center is connected to the tension sensor, the pressure sensor, and the water injection pump. One end of the water injection pipe is connected to an external water source through the water injection pump, and the other end extends into the main foundation pit.
[0011] Preferably, the anti-buoyancy bracket includes an outer wall protrusion and a pump station structure cantilever protrusion, the outer wall protrusion being located above the pump station structure cantilever protrusion, and the pump station structure cantilever protrusion being set on the outside of the bottom plate of the main foundation pit; at least one of the outer wall protrusion and the pump station structure cantilever protrusion having a pressure sensor at its contact point with the ring beam.
[0012] Preferably, both the outer wall protrusion and the pump station structure cantilever protrusion are equipped with pressure sensors at their contact points with the ring beam.
[0013] Preferably, a pressure sensor is installed at the contact point between the outwardly projecting edge of the pump station structure and the ring beam.
[0014] Preferably, each anti-buoyancy anchor is equipped with a tension sensor.
[0015] Preferably, the tension sensor is connected to the data processing center wirelessly or via a wired connection.
[0016] Preferably, the pressure sensor is connected to the data processing center wirelessly or via a wired connection.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. The intelligent combined anti-buoyancy structure system provided by the utility model only needs to meet the stress requirements of the main structure, without the need to increase the plate thickness to cope with the self-weight anti-buoyancy, and can further optimize the cross-sectional thickness of the circular structure design, saving materials.
[0019] 2. The intelligent combined anti-buoyancy structure of this utility model utilizes the combined action of the anti-buoyancy anchor rod and the ring beam on the interlocking pile of the foundation pit, coupled with the intelligent water injection system that adjusts the anti-buoyancy measures in real time according to changes in the groundwater level, effectively solving the problem of insufficient anti-buoyancy force in large-volume buried pump stations and ensuring the stability of the structure; moreover, the way the intelligent water injection system adjusts the anti-buoyancy measures in real time according to changes in the groundwater level not only ensures anti-buoyancy safety, but also avoids excessive consumption of resources.
[0020] 3. This utility model provides an economical and safe new solution for the anti-buoyancy design of large, deeply buried circular water intake pump houses, and has broad practical value and application prospects. Attached Figure Description
[0021] Figure 1 This is a cross-sectional view of the intelligent combined anti-buoyancy structure of this utility model.
[0022] Figure 2 This is a top view of the intelligent combined anti-buoyancy structure of this utility model.
[0023] Explanation of main component symbols
[0024] In the diagram: 1-Interlocking piles in the foundation pit, 2-Ring beam, 3-Outer cantilevered edge of the pump station structure, 4-Outer wall cantilever, 5-Anti-buoyancy anchor, 6-Main foundation pit, 7-Data processing center, 8-Water injection pipe.
[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0026] Please see Figure 1-2 In a preferred embodiment of this utility model, the intelligent combined anti-buoyancy structure of the underground buried circular water intake pump house anchor rod and interlocking pile includes a main foundation pit 6, foundation pit interlocking pile 1, anti-buoyancy anchor rod 5, anti-buoyancy bracket, ring beam 2, and intelligent water injection anti-buoyancy system.
[0027] The main foundation pit 6 has several anti-buoyancy anchors 5 installed on its bottom slab, spaced apart, with each anchor extending downwards from the bottom slab. The outer wall of the main foundation pit 6 is provided with anti-buoyancy brackets. Pit interlocking piles 1 are arranged around the outside of the main foundation pit 6, with ring beams 2 installed on their inner sides, contacting the anti-buoyancy brackets via the ring beams 2. The ring beams 2 at the anti-buoyancy brackets are located at the top of the anti-buoyancy brackets. The intelligent water injection anti-buoyancy system includes tension... The system includes a sensor, a pressure sensor, a data processing center 7, a water injection pipe 8, and a water injection pump (not shown in the figure). The tension sensor is installed on the anti-buoyancy anchor 5 to monitor the tension force on the anti-buoyancy anchor 5. The pressure sensor is installed at the contact point between the anti-buoyancy bracket and the ring beam 2. The data processing center 7 is connected to the tension sensor, the pressure sensor, and the water injection pump (not shown in the figure). One end of the water injection pipe 8 is connected to an external water source through the water injection pump (not shown in the figure), and the other end extends into the main foundation pit 6.
[0028] This utility model achieves anti-buoyancy connection by setting up interlocking piles 1 outside the main foundation pit 6 and connecting the anti-buoyancy brackets on the main foundation pit 6 with the ring beams 2 on the interlocking piles 1. Combined with the anti-buoyancy anchors 5 set on the bottom plate of the main foundation pit 6 and the automatic water injection anti-buoyancy method of the intelligent water injection anti-buoyancy system, the combined effect of multiple anti-buoyancy measures greatly improves the anti-buoyancy effect, effectively solves the problem of insufficient anti-buoyancy force of large-volume buried pump stations, and ensures the stability of the structure.
[0029] In this utility model, the main foundation pit 6 adopts existing technology, and the preferred structural shape is circular. Specifically, it can be a reinforced concrete structure or a steel structure. The cross-sectional dimensions of the structural plate only need to meet the minimum stress requirements to achieve material optimization.
[0030] The anti-buoyancy anchor 5 is connected to the bottom plate of the main foundation pit 6 to pull the main foundation pit 6, thus achieving anti-buoyancy. In practical applications, expansion bladder anchors are recommended, but ordinary anchors can also be used. In this invention, the tension of the anti-buoyancy anchor 5 is detected by a tension sensor to obtain real-time information on the anti-buoyancy status of the anchor 5, thereby facilitating timely adjustment of anti-buoyancy measures by the intelligent water injection anti-buoyancy system and improving structural stability. To more accurately monitor the anti-buoyancy status of the anchor 5, preferably, each anti-buoyancy anchor 5 is equipped with a tension sensor. The tension sensor is connected to the data processing center 7 wirelessly or via a wired connection.
[0031] The interlocking piles 1 form a stable foundation pit support system. They act on the main foundation pit 6 through contact between the ring beam 2 and the anti-buoyancy bracket, thereby improving the anti-buoyancy capacity of the main foundation pit 6. Furthermore, pressure sensors are installed at the contact points between the anti-buoyancy bracket and the ring beam 2 to detect the pressure at these points. This pressure reading indicates the anti-buoyancy status of the main foundation pit 6, facilitating timely adjustments to anti-buoyancy measures by the intelligent water injection anti-buoyancy system. In this embodiment, the anti-buoyancy bracket includes an outer wall protrusion 4 and a pump station structure cantilever protrusion 3. The outer wall protrusion 4 is located above the pump station structure cantilever protrusion 3, which is positioned on the outer side of the bottom plate of the main foundation pit 6. At least one of the contact points between the outer wall protrusion 4 and the pump station structure cantilever protrusion 3 and the ring beam 2 is equipped with a pressure sensor. That is, the anti-buoyancy bracket of this invention has multi-point anti-buoyancy connections, which can better improve the anti-buoyancy capacity. Furthermore, to better monitor the buoyancy resistance, pressure sensors are installed at the contact points between the outer wall protrusion 4 and the pump station structure cantilever protrusion 3 and the ring beam 2. It should be noted that the ring beam 2 can utilize the ring supports on the interlocking piles 1 in the foundation pit, or it can be an additionally cast ring beam, which ensures the effective transmission of buoyancy resistance.
[0032] The intelligent water injection anti-buoyancy system of this utility model consists of a tension sensor, a pressure sensor, a data processing center 7, a water injection pipe 8, and a water injection pump (not shown). It can monitor the tension of the anti-buoyancy anchor 5 in real time through the tension sensor and the pressure of the anti-buoyancy bracket contact point in real time through the pressure sensor. The tension and pressure data are transmitted to the data processing center 7 for monitoring and analysis. The data processing center 7 can automatically calculate the required water injection volume when the buoyancy exceeds the limit at the analysis point, and then inject water into the main foundation pit 6 through the water injection pipe 8 by driving the water injection pump (not shown), thereby improving the anti-buoyancy capability of the main foundation pit 6.
[0033] The specific implementation steps of this utility model are as follows:
[0034] Construction of the foundation pit interlocking pile 1 (if the pile top needs to be excavated with a slope first, the slope is excavated to the designed pile top first, and then the foundation pit interlocking pile 1 is constructed) to form a stable foundation pit support system → earthwork excavation and ring support and other foundation pit excavation procedures are carried out until the excavation is completed → construction of anti-buoyancy anchor 5 and pre-embedding of tension sensor → construction of ring beam 2 (if the original ring support of foundation pit interlocking pile 1 is used, no additional construction is required) and main foundation pit 6, while pre-embedding pressure sensor at the outer wall protrusion 4 or the pump station structure cantilever protrusion 3 → foundation pit backfilling → connecting pressure sensor and tension sensor to data processing center 7 to monitor the tension of anti-buoyancy anchor 5 and the pressure at the contact point of anti-buoyancy bracket in real time → when the system judges that the buoyancy exceeds the limit, the required water injection volume is dynamically calculated and water is injected into the pump station structure through water injection pipe 8 to realize intelligent anti-buoyancy control.
[0035] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.
Claims
1. An intelligent combined anti-buoyancy structure of anchor bolts and interlocking piles for a deeply buried circular water intake pump house, characterized in that: The main foundation pit, the foundation pit interlocking pile, the anti-floating anchor rod, the anti-floating bracket, the ring beam and the intelligent water injection anti-floating system are included. The bottom plate of the main foundation pit is provided with a plurality of anti-floating anchor rods, the anti-floating anchor rods are arranged at intervals, and each anti-floating anchor rod extends from the bottom plate of the main foundation pit to the lower side of the bottom plate; the outer wall of the main foundation pit is provided with an anti-floating bracket; The foundation pit interlocking pile is arranged around the outside of the main foundation pit, the inside of the foundation pit interlocking pile is provided with the ring beam, and the ring beam is in contact with the anti-floating bracket, and the ring beam at the anti-floating bracket is located at the top of the anti-floating bracket; The intelligent water injection anti-floating system includes a tension sensor, a pressure sensor, a data processing center, a water injection pipe and a water injection pump; the tension sensor is arranged on the anti-floating anchor rod and used for monitoring the tension received by the anti-floating anchor rod; the pressure sensor is installed on the contact point of the anti-floating bracket and the ring beam; the data processing center is connected with the tension sensor, the pressure sensor and the water injection pump respectively; one end of the water injection pipe is connected with an external water source through the water injection pump, and the other end of the water injection pipe extends into the main foundation pit.
2. The underground deep-buried circular water intake pump house anchor rod and under-reamed pile intelligent combined anti-floating structure according to claim 1, characterized in that: The anti-floating bracket includes an outer wall convex edge and a pump station structure overhanging convex edge, the outer wall convex edge is located above the pump station structure overhanging convex edge, and the pump station structure overhanging convex edge is arranged outside the bottom plate of the main foundation pit; at least one contact point of the outer wall convex edge and the pump station structure overhanging convex edge with the ring beam is provided with a pressure sensor.
3. The underground deep-buried circular water intake pump house anchor rod and under-reamed pile intelligent combined anti-floating structure according to claim 2, characterized in that: Both the outer wall convex edge and the pump station structure overhanging convex edge are provided with a pressure sensor at the contact point with the ring beam.
4. The underground deep-buried circular water intake pump house anchor rod and under-reamed pile intelligent combined anti-floating structure according to claim 1, characterized in that: A tension sensor is arranged on each anti-floating anchor rod.
5. The underground deep-buried circular water intake pump house anchor rod and under-reamed pile intelligent combined anti-floating structure according to claim 1, characterized in that: The tension sensor is connected with the data processing center in a wireless or wired manner.
6. The underground deep-buried circular water intake pump house anchor rod and under-reamed pile intelligent combined anti-floating structure according to claim 1, characterized in that: The pressure sensor is connected with the data processing center in a wireless or wired manner.