Water blocking structure of steel caisson
By adopting a steel caisson water blocking structure in construction projects, the problems of low efficiency and high cost of precipitation construction at local lowering plates, elevator shafts, water collection pits and other locations are solved, and efficient and low-cost construction results are achieved.
Patent Information
- Application Number
- CN202421421855.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In construction projects, the precipitation construction efficiency and high cost in local lowering plates, elevator shafts, water collection pits and other locations is low in efficiency and cost, and the existing local well point precipitation method is difficult to effectively solve these problems.
The steel caisson water-blocking structure is adopted, including steel base plate, steel side wall, through holes and steel guards. The steel caisson is sunk into the bottom of the foundation pit through a water pump, and soil or concrete is backfilled in the gap to fix the steel caisson, thereby realizing the construction of local lowering plates, elevator shafts, water collection pits and other locations.
It improves the efficiency of precipitation construction, reduces construction costs, and ensures construction quality and safety.
Smart Images
Figure CN222730588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of precipitation construction equipment, in particular to a steel caisson water-blocking structure. Background Art
[0002] For the foundation of the construction project, raft slab is often used as the foundation. When the building has higher floors, the corresponding foundation needs to be excavated deeper, so that groundwater often enters the foundation. Therefore, when constructing the raft slab, it is necessary to carry out precipitation construction first. After draining the water in the foundation pit, support the formwork on the foundation, tie the steel bars, and cast the raft slab.
[0003] However, the dewatering construction design is often designed based on the bottom elevation of the large raft slab, while the bottom elevations of the local drop slab, elevator shaft, sump and other locations are often lower than the bottom elevation of the large raft slab. Therefore, there will still be water sources in the local drop slab, elevator shaft, sump and other locations, making it inconvenient to support formwork, tie steel bars and pour. Because the area of the local drop slab, elevator shaft and sump is small, if the local well point dewatering construction method is still used, the efficiency is often slow, the effect is average, and the construction cost is high. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical defects described in the background technology.
[0005] To this end, one purpose of the utility model is to propose a steel caisson water-blocking structure, which aims to solve the problem of slow efficiency and high construction cost of the construction method of using local well point dewatering in locations such as local drop plates, elevator shafts, and sump pits in the prior art.
[0006] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the utility model provides a steel caisson water-blocking structure, including a steel bottom plate, the steel bottom plate is fixedly connected with steel side walls on all sides, a through hole is opened on the top of the steel bottom plate, a steel casing is fixedly connected to the position of the top of the steel bottom plate corresponding to the through hole, and the height of the steel casing is greater than the height of the steel side wall.
[0007] Beneficial effects: Put the steel caisson into a foundation pit with water, and connect a water pump to the steel casing to extract the water under the steel caisson and drain the water into the inside of the steel caisson, so that the steel caisson sinks to the bottom of the foundation pit. At this time, backfill the gap between the foundation pit and the steel side wall with soil or concrete, fix the steel caisson in the foundation pit, and then use a water pump to pump out the water in the steel caisson. Then, tie the steel bars in the steel caisson, and then cast the raft slabs in the local drop plate, elevator shaft, sump and other locations. The drainage volume is reduced, which has the advantages of high efficiency and low construction cost.
[0008] Preferably, any of the above schemes has a plurality of angle irons fixedly connected to the bottom of the steel bottom plate.
[0009] Beneficial effect: After the steel caisson is lowered to the bottom of the foundation pit, the angle iron can be inserted into the bottom of the foundation pit to position the steel caisson, so that when backfilling soil or concrete in the gap between the foundation pit and the steel side wall, the position of the steel caisson is not easy to move, ensuring the quality of construction
[0010] Preferably, any of the above schemes has a plurality of convex strips fixedly connected to the outer side of the steel side wall.
[0011] Beneficial effect: After backfilling the gap between the side wall of the foundation pit and the steel side wall with soil or concrete, the convex strips can make the steel side wall fully contact with the backfill soil or concrete, thereby increasing the friction. Therefore, when the water in the steel caisson is extracted again, the groundwater will not cause the steel caisson to float. The structure is simple and reliable, ensuring the safety of the project.
[0012] Preferably, any of the above solutions has a crossbeam fixedly connected to the inner wall of the steel side wall.
[0013] Beneficial effect: When the size of the local drop plate, elevator shaft, sump and other locations is large, the size of the steel caisson will also be large. Therefore, when the groundwater squeezes the steel caisson, the steel side wall is easy to deform. By setting a crossbeam to support the steel side wall from the inside of the steel caisson, the firmness is improved and the deformation of the steel caisson can be prevented.
[0014] Preferably, any of the above schemes comprises a fixed tube and an extension tube, the bottom end of the extension tube is fixedly connected with a connector, the extension tube is threadedly connected to the top end of the fixed tube via the connector, and the height of the fixed tube is lower than the height of the steel side wall.
[0015] Beneficial effects: The extension pipe is removable and the height of the fixed pipe is low. After the extension pipe is removed, the steel caisson is placed in the foundation pit. Due to its own weight, the steel bottom plate of the steel caisson will sink below the water surface in the foundation pit. At this time, the top of the fixed pipe is also lower than the water surface in the foundation pit. Therefore, the water in the foundation pit will flow into the interior of the steel caisson from the fixed pipe, and the steel caisson will slowly sink. When the steel caisson is filled with water, it will sink to the bottom of the foundation pit. This process does not require a water pump to pump water, so a certain amount of energy can be saved.
[0016] Preferably, the steel casing includes a fixed tube and an extension tube, the bottom end of the outer surface of the extension tube is fixedly connected to a sleeve, the bottom end of the inner wall of the sleeve is fixedly connected to a connector, the connector is threadedly connected to the outer surface of the fixed tube, a water outlet is provided on the outer surface of the sleeve, and the connector is threadedly connected to the top of the fixed tube.
[0017] Beneficial effect: After the steel caisson sinks into the foundation pit, the fixed pipe is located below the water surface. It is difficult to connect the extension pipe to the fixed pipe at this time. The above scheme rotates the connecting head to create a gap between the fixed pipe and the extension pipe. When the steel caisson is placed into the foundation pit, the water in the foundation pit will gush out from the fixed pipe, and then enter the steel caisson from the water outlet until the steel caisson sinks to the bottom of the foundation pit. Then, the connecting head is rotated to make the fixed pipe and the extension pipe collide with each other and seal the water outlet. This method does not require the extension pipe to be removed, so it is easy to operate.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 It is a structural schematic diagram according to the first embodiment of the present utility model.
[0021] Figure 2 It is a schematic structural diagram of the steel bottom plate and the steel side wall according to the utility model.
[0022] Figure 3 It is a structural schematic diagram according to the second embodiment of the present utility model.
[0023] Figure 4 It is a schematic diagram of the structure of the steel casing according to the third embodiment of the present utility model.
[0024] Figure 5 It is a structural schematic diagram of the first form of the steel casing according to the fourth embodiment of the present utility model.
[0025] Figure 6 It is a structural schematic diagram of the second form of the steel casing according to the fourth embodiment of the present utility model.
[0026] Among them: 1. Steel bottom plate, 11. Steel side wall, 12. Through hole, 13. Angle iron, 14. Raised strip, 2. Steel casing, 21. Fixed pipe, 22. Extension pipe, 23. Connector, 24. Casing, 25. Water outlet, 3. Crossbeam. DETAILED DESCRIPTION
[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] The utility model provides a steel caisson water blocking structure.
[0030] Embodiment 1:
[0031] like Figure 1-2 As shown, it includes a steel bottom plate 1, characterized in that steel side walls 11 are fixedly connected to the four sides of the steel bottom plate 1, a through hole 12 is opened on the top of the steel bottom plate 1, a steel casing 2 is fixedly connected to the position of the top of the steel bottom plate 1 corresponding to the through hole 12, the top of the steel casing 2 needs to be connected to a water pump for extracting water from under the steel bottom plate 1, and the height of the steel casing 2 is greater than the height of the steel side wall 11, the top surface of the steel side wall 11 is flush with the top surface of the large raft slab, so the steel casing 2 is higher than the steel side wall 11, and the steel casing 2 is higher than the top surface of the large raft slab, so groundwater will not gush out from the steel casing 2.
[0032] Preferably, a plurality of angle irons 13 are fixedly connected to the bottom of the steel bottom plate 1. When the steel bottom plate 1 descends, the angle irons 13 can be inserted into the foundation pit, thereby positioning the steel caisson and preventing the steel caisson from moving in the foundation pit.
[0033] Preferably, a plurality of convex strips 14 are fixedly connected to the outer side of the steel side wall 11. After backfilling the gap between the foundation pit side wall and the steel side wall 11 with soil or concrete, the convex strips 14 can make the steel side wall 11 fully contact with the backfill soil or concrete, thereby increasing friction and preventing groundwater from lifting the steel caisson upward.
[0034] The working principle of the first embodiment is: the steel caisson is placed in a foundation pit with water, and a water pump is connected to the steel casing 2 to extract the water under the steel caisson and discharge the water into the interior of the steel caisson, so that the steel caisson will gradually sink until it sinks to the bottom of the foundation pit, and the angle iron 13 is inserted into the foundation pit to position the steel caisson. At this time, the water pump on the steel casing 2 is removed. Since the steel casing 2 is higher than the steel side wall 11, that is, higher than the top surface of the large raft slab, groundwater will not gush out from the steel casing 2. At this time, backfill the gap between the foundation pit and the steel side wall 11 with soil or concrete, fix the steel caisson in the foundation pit, and then use the water pump to pump out the water in the steel caisson, then tie the steel bars in the steel caisson, and then cast the raft slabs at the positions of the local drop plate, elevator shaft, sump, etc.
[0035] Embodiment 2:
[0036] like Figure 3 As shown, on the basis of Example 1, the inner wall of the steel side wall 11 is fixedly connected with a crossbeam 3. When the size of the local drop plate, elevator shaft, sump and other locations is large, the size of the steel caisson is also large. Therefore, when the groundwater squeezes the steel caisson, the steel side wall 11 is easy to deform. By arranging the crossbeam 3 to support the steel side wall 11 from the inside of the steel caisson, the steel caisson can be prevented from deformation.
[0037] Embodiment three:
[0038] like Figure 4 As shown, on the basis of Example 1 or Example 2, the steel casing 2 includes a fixed pipe 21 and an extension pipe 22, the bottom end of the extension pipe 22 is fixedly connected with a connector 23, the extension pipe 22 is threadedly connected to the top of the fixed pipe 21 through the connector 23, the extension pipe 22 is removable, the height of the fixed pipe 21 is lower than the height of the steel side wall 11, after the steel caisson is placed in the foundation pit, the steel caisson sinks a certain distance due to its own weight, and the top of the fixed pipe 21 is lower than the height of the groundwater level, so that the water in the foundation pit can enter the steel caisson.
[0039] The working principle of the third embodiment is as follows: after the extension pipe 22 is removed, the steel caisson is placed in the foundation pit. Due to its own weight, the steel bottom plate 1 of the steel caisson will sink below the water surface in the foundation pit. At this time, the top of the fixed pipe 21 is also lower than the water surface in the foundation pit. Therefore, the water in the foundation pit will flow into the interior of the steel caisson from the fixed pipe 21, and the steel caisson will slowly sink. When the steel caisson is filled with water, the steel caisson will sink to the bottom of the foundation pit. At this time, the extension pipe 22 is threadedly connected to the fixed pipe 21 through the connector 23. The top of the extension pipe 22 is higher than the top surface of the steel side wall 11 and the large raft slab. At this time, the gap between the foundation pit and the steel side wall 11 is backfilled with soil or concrete, the steel caisson is fixed in the foundation pit, and then a water pump is used to pump out the water in the steel caisson. The steel bars can be tied in the steel caisson, and then the raft slabs at the positions of the local drop plate, elevator shaft, sump, etc. can be cast.
[0040] Embodiment 4:
[0041] like Figure 5-6As shown, on the basis of Example 1 or Example 2, the steel casing 2 includes a fixed tube 21 and an extension tube 22, the bottom end of the outer surface of the extension tube 22 is fixedly connected with a sleeve 24, the bottom end of the inner wall of the sleeve 24 is fixedly connected with a connector 23, the connector 23 is threadedly connected to the outer surface of the fixed tube 21, the outer surface of the sleeve 24 is provided with a water outlet 25, the connector 23 is threadedly connected to the top of the fixed tube 21, the connector 23 is rotated to form a gap between the fixed tube 21 and the extension tube 22, at this time water can flow out from the water outlet 25, the connector 23 is rotated to make the fixed tube 21 and the extension tube 22 contact and seal with each other, at this time water cannot flow out from the water outlet 25, and the height of the fixed tube 21 is lower than the height of the steel side wall 11.
[0042] The working principle of the fourth embodiment is: rotate the connecting head 23 to create a gap between the fixed pipe 21 and the extension pipe 22. At this time, put the steel caisson into the foundation pit. Due to its own weight, the steel bottom plate 1 of the steel caisson will sink below the water surface in the foundation pit. At this time, the top of the fixed pipe 21 is also lower than the water surface in the foundation pit. Therefore, the water in the foundation pit will gush out from the fixed pipe 21, and then enter the steel caisson from the water outlet 25. The steel caisson will slowly sink. When the steel caisson is filled with water, it will sink to the bottom of the foundation pit. At this time, rotate the connecting head 23 again to make the fixed pipe 21 and the extension pipe 22 collide and seal the water outlet 25. Then, fix the steel caisson by backfilling soil or concrete, and finally pump out the water in the steel caisson for subsequent construction.
Claims
1. A steel caisson water blocking structure, comprising a steel bottom plate (1), characterized in that: The steel bottom plate (1) is fixedly connected to steel side walls (11) on all sides, a through hole (12) is provided on the top of the steel bottom plate (1), a steel casing (2) is fixedly connected to a position on the top of the steel bottom plate (1) corresponding to the through hole (12), and the height of the steel casing (2) is greater than the height of the steel side wall (11).
2. The steel caisson water blocking structure according to claim 1, characterized in that: A plurality of angle irons (13) are fixedly connected to the bottom of the steel bottom plate (1).
3. The steel caisson water blocking structure according to claim 1, characterized in that: A plurality of convex strips (14) are fixedly connected to the outer side of the steel side wall (11).
4. The steel caisson water blocking structure according to claim 1, characterized in that: The inner wall of the steel side wall (11) is fixedly connected with a crossbeam (3).
5. The steel caisson water blocking structure according to claim 1, characterized in that: The steel casing (2) comprises a fixed pipe (21) and an extension pipe (22), the bottom end of the extension pipe (22) is fixedly connected with a connector (23), and the extension pipe (22) is threadedly connected to the top end of the fixed pipe (21) via the connector (23).
6. The steel caisson water blocking structure according to claim 1, characterized in that: The steel casing (2) comprises a fixed tube (21) and an extension tube (22); the bottom end of the outer surface of the extension tube (22) is fixedly connected to a sleeve (24); the bottom end of the inner wall of the sleeve (24) is fixedly connected to a connector (23); the connector (23) is threadedly connected to the outer surface of the fixed tube (21); a water outlet (25) is provided on the outer surface of the sleeve (24); and the connector (23) is threadedly connected to the top of the fixed tube (21).
7. The steel caisson water blocking structure according to claim 5 or 6, characterized in that: The height of the fixed pipe (21) is lower than the height of the steel side wall (11).