Basement water collecting structure
Based on the basement raft board, the overall reinforced concrete design and step -type water collector structure are used to solve the problem of stress concentration and construction difficulty in the design of the raft foundation water collection well, and achieve the effect of improving safety and stability and reducing construction costs.
Patent Information
- Application Number
- CN202420293230.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-18
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-02-18
AI Technical Summary
In the design of existing basement raft foundation water collection wells, multiple separate water collection wells cause excessive bending of the bottom of the raft foundation, causing stress concentration, reducing the overall performance of the raft, increasing construction difficulty and construction costs.
Adopt the basic design of the overall reinforced concrete raft board, a step -type sinking on the surface of the water collection well, the partition wall is divided into deep wells and shallow wells, the bottom of the shallow well is lower than the bottom of the deep well, and connects to the deep well through the pipeline. Transition, reducing the bending parts of the raft foundation.
Effectively reduce the phenomenon of basic stress concentration of the raft board, improve the overall safety and stability, reduce the difficulty of construction and the cost of construction, and reduce the amount of material.
Smart Images
Figure CN222413089U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building structure design, and specifically discloses a basement water collection structure. Background Art
[0002] In current construction projects, buildings with basements usually use raft foundations. In order to meet the fire protection needs of buildings, multiple water collection wells are often set up on the raft foundation of the basement to store fire water. The water collection well requires the raft foundation to be partially sunken to form a vertical low-pitted shaft, and the bottom of the raft is bent and transitioned around the shaft. As the building height increases, the thickness of the raft foundation increases accordingly, and the number of water collection wells required to be set also increases accordingly. At present, multiple separate water collection wells are often used in the design of water collection wells for raft foundations in basements. Multiple hole-shaped water collection wells are formed on the raft foundation. Although this setting method can meet the needs of building water storage and fire protection, due to the large number of water collection wells and their dispersion and independence, there are too many bending parts at the bottom of the raft foundation, which can easily cause stress concentration at the raft water collection well, change the force mode and internal force distribution of the raft foundation, weaken the overall performance of the raft, and produce defects such as permanent cracks, causing groundwater upwelling, so there are major safety hazards. At the same time, setting up multiple separate independent water collection wells will cause too many bends at the bottom of the raft, which will significantly increase the difficulty of raft construction and increase the cost of engineering construction, and the practicality and economy are poor. In response to this engineering problem, measures such as local armpit reinforcement of the raft and finite element calculation and analysis of the folded plate are often used to strengthen the raft at the water collection well. However, the above measures cannot effectively solve the safety problem caused by too many water collection wells on the raft on the raft foundation performance, and the problems of high construction difficulty and high construction cost are still significant. Utility Model Content
[0003] In order to solve the technical problems listed in the background technology, the utility model provides a basement water collection structure. The specific technical solution is as follows:
[0004] A basement water collection structure comprises a raft foundation and a partition wall for supporting an upper building, wherein the raft foundation is an integral reinforced concrete structure, comprising a raft horizontally arranged on the outer periphery and a water collection well sunken in a stepped manner in the middle, the raft foundation is an integrated design, a partition wall is arranged on the stepped edge of the inner surface of the water collection well, the water collection well is divided into a deep well and a shallow well, the bottom of the deep well is lower than the bottom of the shallow well, the number and orientation of the shallow well are arranged according to the requirements of the engineering structure and confluence, and the bottom is connected to the deep well through a pipeline; the upper and lower step horizontal planes of the inner surface of the water collection well are connected by a vertical plane, and the upper and lower steps of the outer surface are connected by a slope, and the angle between the slope and the horizontal plane of the steps is an obtuse angle.
[0005] Preferably, the thickness of the bottom of the deep well and the shallow well is consistent with the thickness of the raft slab, and the thickness of the raft slab is calculated and determined based on the building load and the geological conditions of the area; a plain concrete cushion layer is arranged under the raft slab foundation.
[0006] Preferably, the steel bar specifications and layout spacing of the inner surface of the water collection well are consistent with those of the upper surface of the raft; the steel bar specifications and layout spacing of the outer periphery of the water collection well are consistent with those of the lower surface of the raft.
[0007] Preferably, the partition wall is a reinforced concrete structure, and the steel bars of the partition wall are composed of horizontal steel bars and vertical steel bars, wherein the vertical steel bars are anchored straight downward into the bottom plate of the sump; the specifications and layout spacing of the partition wall steel bars need to be determined according to the load requirements.
[0008] Preferably, the obtuse angle is 120°-135°.
[0009] Preferably, the horizontal projection area of the plain concrete cushion layer needs to be larger than the horizontal projection area of the raft foundation; and the top of the deep well is provided with an upper cover plate made of reinforced concrete or cast iron.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] The utility model avoids the problem of excessive bending of the raft bottom caused by traditional independent separation water collection wells by continuously arranging the water collection wells, adopting a gentle slope transition for the side walls of the water collection wells, and making the side walls and the bottom plate in close contact with the compacted soil, thereby reducing the stress concentration phenomenon of the raft foundation and effectively improving the overall safety and stability of the raft foundation.
[0012] The utility model connects two adjacent water collection wells through a reinforced concrete partition wall to form an integrated continuous integral water collection well. Compared with a plurality of independently separated water collection wells, the usage of materials such as steel bars and concrete can be effectively reduced, and the construction cost of the basement raft foundation is effectively reduced.
[0013] The utility model adopts a continuous water collection well structure, which can reduce the bending part of the bottom of the raft foundation, thereby reducing the amount of earth excavation during the construction process, facilitating construction operation and reducing construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a front cross-sectional view of an embodiment of the utility model;
[0015] Figure 2 It is a top view of an embodiment of the utility model;
[0016] In the figure: 1- raft foundation, 2- raft top reinforcement, 3- raft bottom reinforcement, 4- shallow water collection well, 5- deep water collection well, 6- cover plate, 7- water collection well bottom plate, 8- partition wall, 9- partition wall reinforcement, 10- side wall transition zone, 11- side wall transition zone reinforcement, 12- side wall vertical zone reinforcement, 13- plain concrete cushion. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] The raft foundation 1 is the embedded end of the building superstructure and also serves as the basement floor; the raft top steel bars 2 and the raft bottom steel bars 3 are arranged in the raft foundation 1; the shallow water collection well 4 (i.e. the shallow well in the invention) and the deep water collection well 5 (i.e. the deep well in the invention) are formed by partially sinking the raft foundation, and the water collection well side wall vertical zone steel bars 12 are arranged on the side of the water collection well, and the water collection well bottom plate steel bars are arranged in the same manner as the raft foundation 1; a cover plate 6 is arranged on the top of the deep water collection well 5; a partition wall 8 is arranged between the shallow water collection well 4 and the deep water collection well 5, and a partition wall steel bar 9 is arranged in the partition wall 8; a bending treatment and transition treatment are performed at the bottom of the raft and the side wall of the water collection well to form an inclined surface at a certain angle, forming a side wall transition zone 10; a side wall transition zone steel bar 11 is arranged in the side wall transition zone 10; a plain concrete cushion layer 13 is arranged outside the raft foundation 1, the water collection well bottom plate 7 and the side wall transition zone 10.
[0019] According to the above scheme, the thickness of the raft foundation 1 is h, and h needs to be determined based on the building load, usage requirements, structural requirements, etc. The raft top steel bars 2 and the raft bottom steel bars 3 are respectively arranged in two directions in the upper and lower concrete protective layers of the raft foundation 1. The steel bar specifications and layout spacing need to be calculated and determined based on the raft bearing performance and normal use requirements.
[0020] According to the above scheme, the depths of the shallow water collection well 4 and the deep water collection well 5 are h1 and h2 respectively, and the widths are b1 and b2 respectively, which are determined by the fire water storage requirements of the building; wherein h1 and h2 are not equal, so that a certain height difference is formed in the water collection well bottom plate 7;
[0021] According to the above scheme, top and bottom stress-bearing steel bars need to be arranged inside the bottom plate 7 of the water collection well, and the specifications and layout spacing of the steel bars are consistent with the top steel bars 2 and the bottom steel bars 3 of the raft slab respectively; side wall vertical zone steel bars 12 need to be arranged in the side wall of the water collection well, and their specifications and layout spacing are consistent with the top steel bars 2 of the raft slab.
[0022] According to the above scheme, the cover plate 6 on the upper part of the shallow water collection well 4 and the deep water collection well 5 can be made of reinforced concrete, steel, cast iron, etc., and its specific form, specification and material can be determined according to the use requirements.
[0023] According to the above scheme, a partition wall 8 is set between the shallow water collection well 4 and the deep water collection well 5, and a continuous water collection well is formed by connecting them through the partition wall; partition wall steel bars 9 need to be set inside the partition wall 8, and the specifications and layout spacing of the partition wall steel bars 9 need to be determined according to the use load and related structural requirements.
[0024] According to the above scheme, the connecting parts between the side walls of the shallow water collection well 4 and the deep water collection well 5 and the bottom of the raft foundation 1 are bent to form a transition slope with a certain angle, and this triangular range constitutes the side wall transition zone 10; the side wall transition zone steel bars 11 are arranged in the side wall transition zone 10, and the specifications and layout spacing of the side wall transition zone steel bars 11 are consistent with the raft bottom steel bars 3.
[0025] According to the above scheme, the standard value of yield strength of raft top steel bar 2, raft bottom steel bar 3, partition wall steel bar 9, side wall transition zone steel bar 11, and side wall vertical zone steel bar 12 shall not be less than 400MPa, and the anchorage length shall not be less than the basic anchorage length La, and its value shall meet the requirements of the Code for Design of Concrete Structures.
[0026] (GB50010—2015) relevant provisions.
[0027] According to the above scheme, the horizontal projection of the plain concrete cushion layer 13 needs to be larger than the horizontal projection range of the raft foundation 1, and its thickness, strength grade and plane size need to be determined according to environmental characteristics and usage requirements.
[0028] According to the above scheme, the thickness of the concrete cover of each type of reinforcement must meet the requirements of relevant specifications and standards.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A basement water collection structure, characterized in that: It includes a raft foundation and a partition wall for supporting the upper building. The raft foundation is an integral reinforced concrete structure, including a raft arranged horizontally on the outer periphery and a stepped sunken water collection well in the middle. The raft foundation is an integrated design. A partition wall is arranged on the stepped edge of the inner surface of the water collection well to separate the water collection well into a deep well and a shallow well. The bottom of the deep well is lower than the bottom of the shallow well. The number and orientation of the shallow well are arranged according to the requirements of the engineering structure and confluence, and the bottom is connected to the deep well through a pipeline. The upper and lower step horizontal planes of the inner surface of the water collection well are connected by a vertical plane, and the upper and lower steps of the outer surface are connected by a slope, and the angle between the slope and the horizontal plane of the steps is an obtuse angle.
2. A basement water collection structure as claimed in claim 1, characterized in that: The thickness of the bottom of the deep well and the shallow well is consistent with the thickness of the raft slab, and the thickness of the raft slab is calculated and determined based on the building load and the geological conditions of the area where the raft slab is located; a plain concrete cushion layer is arranged under the raft slab foundation.
3. A basement water collection structure as claimed in claim 2, characterized in that: The steel bar specifications and layout spacing of the inner surface of the water collection well are consistent with those of the upper surface of the raft; the steel bar specifications and layout spacing of the outer periphery of the water collection well are consistent with those of the lower surface of the raft.
4. A basement water collection structure as claimed in claim 3, characterized in that: The partition wall is a reinforced concrete structure, and the steel bars of the partition wall are composed of horizontal steel bars and vertical steel bars, wherein the vertical steel bars are anchored straight down into the bottom plate of the water collection well; the specifications and layout spacing of the partition wall steel bars need to be determined according to the load requirements.
5. A basement water collection structure as claimed in claim 4, characterized in that: The obtuse angle is 120°-135°.
6. A basement water collection structure as claimed in claim 5, characterized in that: The horizontal projection area of the plain concrete cushion layer must be larger than the horizontal projection area of the raft foundation; the top of the deep well is provided with an upper cover plate made of reinforced concrete or cast iron.