Auxiliary underground water pool

Abstract

The invention relates to the technical field of constructional engineering, in particular to an auxiliary underground water pool. The pool comprises a top plate and a bottom plate which are arranged at intervals in the vertical direction, enclosing walls are arranged around the top plate and the bottom plate, a plurality of partition walls are arranged between the top plate and the bottom plate in the transverse direction at intervals, the partition walls extend in the longitudinal direction, and the upper ends and the lower ends of the partition walls are connected to the bottom face of the top plate and the top face of the bottom plate in a supporting mode respectively. The space between the top plate and the bottom plate is divided into a plurality of water storage units through the partition walls, and a water passing channel is arranged between every two adjacent water storage units. The top plate and the bottom plate are directly connected with the enclosing wall, the partition walls are arranged in the middle at intervals, the complexity of formwork building is reduced, the multiple partition walls are used for supporting the top beam and the bottom beam, the large-span requirement can be met, enough rigidity can still be guaranteed when the plane size is large, the bottom beam and the top beam are not arranged, and under the same volume requirement, the burial depth is reduced; the layer height of an auxiliary underground water pool is reduced, excavation depth is reduced, engineering quantity is reduced, and space utilization rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly relates to an attached underground water tank. Background Art

[0002] The underground water tanks in the prior art are usually composed of a beam and slab system, including a top beam and slab system, a bottom beam and slab system, and a wall surrounding the two. As shown in the appendix Figure 1 In the figure, the top beam and slab system includes a top beam 9 and a top plate 1 covering the upper end of the top beam 9, and the bottom beam and slab system includes a bottom beam 10 and a bottom plate 2 laid on the upper end of the bottom beam 10. Both the top beam 9 and the bottom beam 10 include multiple cross-arranged cross beams and longitudinal beams, enclosing a grid of beams. The position between the top plate 1 and the bottom plate 2 forms the water storage space of the underground water tank.

[0003] For the above-mentioned underground water tank, since the top beam 9 and the bottom beam 10 need to be set vertically respectively, when the volume is satisfied, the overall buried depth of the underground water tank is relatively deep, the amount of excavation is large, which correspondingly increases the workload, and the beam and slab system not only uses more materials, has a large formwork project volume, high construction difficulty and long construction period. At the same time, inside the water tank, the top beam and slab system and the bottom beam and slab system are arranged at intervals and are independent of each other, and the forces are basically not related. When the plane size is larger, its stiffness is smaller, resulting in reduced safety, and at the same time, the underground capacity is limited to a certain extent. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an attached underground water tank, in which the top plate and the bottom plate are directly connected to the surrounding wall, and partition walls are arranged at intervals in the middle, reducing the complexity of formwork erection. Using multiple partition walls to support the top beam and the bottom beam can meet the large-span requirements, and still ensure sufficient stiffness when the plane size is relatively large. Without setting the bottom beam and the top beam, under the same volume requirement, the buried depth is reduced, the height of the underground water tank is reduced, the excavation depth is reduced, the project volume is reduced, and the space utilization rate is improved.

[0005] In view of the above technical problems, the technical solution provided by the present invention is an attached underground water tank, including a top plate and a bottom plate arranged at intervals vertically. The four sides of the top plate and the bottom plate are surrounded by a surrounding wall. Multiple partition walls are arranged at intervals horizontally between the top plate and the bottom plate. The length of the partition wall extends longitudinally. The upper and lower ends of the partition wall are respectively supported and connected to the bottom surface of the top plate and the top surface of the bottom plate. The partition wall divides the space between the top plate and the bottom plate into multiple water storage units, and a water passage is arranged between adjacent water storage units.

[0006] Further, the longitudinal ends of the partition wall are respectively connected to the surrounding wall on the corresponding side, and the water passage is a water hole opened on the partition wall.

[0007] Further, a plurality of water holes are arranged at intervals along the length direction of the partition wall.

[0008] Furthermore, the partition walls are arranged at equal intervals in the transverse direction, and the water passing holes of each partition wall are symmetrically arranged longitudinally with the longitudinal midpoint of the partition wall as the symmetry point.

[0009] Furthermore, a base is provided at each of the four corners of the bottom plate. The top surface of the bottom plate is flush with the top surface of the base. The bottom plate is fixed to the base. A support column extending upward is provided on the base. The corner formed by the top plate and the enclosing walls on its adjacent two sides is inserted and fixed in the support column.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] (1) The top plate and the bottom plate are directly connected to the enclosing walls, and partition walls are arranged at intervals in the middle, avoiding the triviality and complexity of the processing and erection of the existing beam formwork, reducing the construction difficulty and shortening the construction period. By using multiple partition walls to connect the top plate and the bottom plate to form multiple I-beam structures, the large-span requirements can be met, and sufficient stiffness can still be ensured when the plane size is large. At the same time, the bottom beam and the top beam are not provided. Under the same volume requirement, the buried depth is reduced, the height of the underground water tank is reduced, the excavation depth is reduced, the engineering quantity is reduced, and the space utilization rate is improved.

[0012] Moreover, by using multiple partition walls arranged at intervals in the transverse direction, the top plate and the bottom plate are directly connected through multiple partition walls, and the whole underground water tank forms an integral body, so that the buoyancy of the bottom plate of the underground water tank and the vertical load on the top plate partially offset each other, and more use of the overall weight for anti-floating is made, greatly reducing the local anti-floating problem and having a higher anti-floating efficiency.

[0013] At the same time, for the attached underground water tank of the present application, the steel consumption is small, the steel bars can be controlled to be properly dense and sparse, and the quality of concrete pouring is easier to guarantee. The top plate and the bottom plate are both flat plates, and the engineering quantities of formwork and steel bar binding are greatly reduced. It avoids the problem that the steel bars in the beam section of the prior art are large in diameter and dense, and it is difficult to vibrate during concrete pouring; secondly, the processing and laying efficiency of the steel bars of the beamless top plate and bottom plate is higher.

[0014] (2) The longitudinal ends of the partition walls are respectively connected to the enclosing walls on the corresponding sides to form a stable support structure, providing integrity and improving the overall stiffness of the underground water tank. The water passing holes can ensure smooth water flow.

[0015] (3) The partition walls are arranged at equal intervals in the transverse direction, and the water passing holes of each partition wall are symmetrically arranged longitudinally with the midpoint thereof as the symmetry point, which can make the load distribution equal everywhere in the whole water tank and avoid the occurrence of local anti-floating problems.

[0016] (4) The bottom plate is fixed to the base, and the top plate is inserted into the support columns at the corners of the enclosure wall. Constraint points are formed by the support columns to constrain the four corner points of the attached underground water tank. The underground water tank cannot move up and down. Inside the attached underground water tank, the top plate and the bottom plate are connected and associated as a whole through partition walls, improving the bearing capacity and anti-floating capacity. Description of the Drawings

[0017] Figure 1 is a schematic cross-sectional view of an underground water tank in the prior art.

[0018] Figure 2 is a schematic cross-sectional view of the attached underground water tank in Embodiment 1 of the present invention.

[0019] Figure 3 is a schematic overall structure diagram of the assembly of an attached underground water tank and a fire pump house in Embodiment 1 of the present invention.

[0020] Figure 4 is a cross-sectional view of a first perspective of the assembly of an attached underground water tank and a fire pump house in Embodiment 1 of the present invention.

[0021] Figure 5 is a cross-sectional view of a second perspective of the assembly of an attached underground water tank and a fire pump house in Embodiment 1 of the present invention.

[0022] Figure 6 is a schematic structure diagram of the attached underground water tank with the top plate hidden in Embodiment 1 of the present invention.

[0023] Figure 7 is a schematic structure diagram of the top plate, bottom plate, enclosure wall, base, and support columns in Embodiment 1 of the present invention.

[0024] Figure 8 is a schematic calculation diagram of the sectional moment of inertia of the top plate and the top beam of an underground water tank in the prior art.

[0025] Figure 9 is a schematic calculation diagram of the sectional moment of inertia of the bottom plate and the bottom beam of an underground water tank in the prior art.

[0026] Figure 10 is a schematic calculation diagram of the sectional moment of inertia of the top plate, bottom plate, and partition wall in Embodiment 1 of the present invention.

[0027] In the figures: 1. Top plate; 2. Bottom plate; 3. Enclosure wall; 4. Partition wall; 5. Water passing hole; 6. Base; 7. Support column; 9. Top beam; 10. Bottom beam; 11. Fire pump house; 12. Entrance and exit. Detailed Embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application: Specific Embodiment 1:

[0030] As shown in Figure 3 and 4 , in this embodiment, an auxiliary underground water tank is built on one side of the fire pump house 11, and both the fire pump house 11 and the auxiliary underground water tank are built underground in the building. The auxiliary underground water tank is used to supply water to the fire pump house 11, and an inlet / outlet 12 is provided on one side of the auxiliary underground water tank. The length direction of the partition wall 4 is longitudinal, and the interval direction between adjacent partition walls 4 is transverse.

[0031] Referring to Figures 2 to 10 , an auxiliary underground water tank of the present invention includes a top plate 1 and a bottom plate 2 arranged at intervals in the vertical direction. The top and bottom of the top plate 1 and the bottom plate 2 are surrounded by a wall 3. A plurality of partition walls 4 are arranged at intervals in the horizontal direction between the top plate 1 and the bottom plate 2. The length of the partition wall 4 extends longitudinally. The upper and lower ends of the partition wall 4 are respectively supported and connected to the bottom surface of the top plate 1 and the top surface of the bottom plate 2. The partition wall 4 divides the space between the top plate 1 and the bottom plate 2 into multiple water storage units, and a water passage is provided between adjacent water storage units.

[0032] With such an arrangement, the top plate 1 and the bottom plate 2 are directly connected to the wall 3, and the partition walls 4 are arranged at intervals in the middle, avoiding the triviality and complexity of the processing and erection of the existing beam formwork, reducing the construction difficulty and shortening the construction period. Using a plurality of partition walls 4 to connect the top plate 1 and the bottom plate 2 can meet the large-span requirements and still ensure sufficient stiffness when the plane size is large. At the same time, through calculation, the internal space occupied by the increased partition wall 4 is much smaller than the space from the bottom of the top plate 1 to the bottom of the top beam 9 in the prior art. Therefore, the bottom beam 10 and the top beam 9 are not provided in this application. Under the same volume requirement, the buried depth is reduced, the height of the auxiliary underground water tank is reduced, the excavation depth is reduced, the engineering quantity is reduced, and the space utilization rate is improved.

[0033] Furthermore, by using a plurality of partition walls 4 arranged at intervals in the horizontal direction, the top plate 1 and the bottom plate 2 are directly connected through a plurality of partition walls 4, and the entire underground water tank forms an integral body, so that the buoyancy of the bottom plate 2 of the underground water tank and the vertical load on the top plate 1 partially offset each other, and more use of the overall weight for anti-floating, greatly reducing the local anti-floating problem and having a higher anti-floating efficiency.

[0034] At the same time, for the auxiliary underground water tank of this application, the steel consumption is small, the steel bars can be controlled to be properly dense, and the quality of concrete pouring is easier to be guaranteed. Both the top plate 1 and the bottom plate 2 are flat plates, and the engineering quantities of formwork and steel bar binding are greatly reduced. It avoids the problem that the steel bar diameter of the beam section in the prior art is large and dense, making it difficult to vibrate the concrete during pouring; secondly, the processing and laying efficiency of the steel bars of the beamless top plate 1 and bottom plate 2 is higher.

[0035] Specifically, in this embodiment, the longitudinal ends of the partition wall 4 are respectively connected to the enclosure walls 3 on the corresponding sides, and the water passage is a water hole 5 opened in the partition wall 4. The longitudinal ends of the partition wall 4 are respectively connected to the enclosure walls 3 on the corresponding sides, forming a stable support structure, providing integrity, improving the overall stiffness of the attached underground water tank, and ensuring smooth water flow by using the water hole 5.

[0036] Preferably, in this embodiment, a plurality of water holes 5 are arranged at intervals along the length direction of the partition wall 4. Specifically, in this embodiment, two water holes 5 are arranged at intervals on each partition wall 4. Of course, in other embodiments, when meeting the actual use requirements, the number of water holes 5 can be set according to actual needs, such as 3, 4, etc. The size of the water hole 5 needs to allow people to pass through to meet the functions of maintenance and serving as a construction material passage.

[0037] A plurality of partition walls 4 are arranged at equal intervals in the transverse direction, and the distances between the partition walls 4 on the two transverse sides from the enclosure walls 3 on the corresponding sides are the same as the intervals between adjacent partition walls 4, so that the sizes of individual water storage units are basically the same. And the water holes 5 on each partition wall 4 are symmetrically arranged longitudinally with the longitudinal midpoint of the partition wall 4 as the symmetry point. This makes the load distribution equal everywhere in the entire water tank, reducing the local anti-floating problem.

[0038] Preferably, in this embodiment, a base 6 is respectively provided at the four corners of the bottom plate 2. The top surface of the bottom plate 2 is flush with the top surface of the base 6. The bottom plate 2 is fixed to the base 6. A support column 7 extending upward is provided on the base 6. The upper end of the support column 7 extends beyond the top plate 1. The corners formed by the top plate 1 and the enclosure walls 3 on its adjacent two sides are inserted and fixed in the support column 7.

[0039] The bottom plate 2 is fixed to the base 6, and the corners of the top plate 1 and the enclosure walls 3 are inserted into the support column 7. By using the support column 7 to form constraint points, the four corner points of the attached underground water tank are constrained, and the underground water tank cannot move up and down. The interior of the attached underground water tank is connected and associated by the partition wall 4 between the top plate 1 and the bottom plate 2 to form an integral body, improving the bearing capacity and anti-floating ability.

[0040] The following is a comparison between the practices in the prior art and the practices of the present invention under the same design conditions.

[0041] The design conditions are as follows: the plane size of the underground water tank is 13 meters by 13 meters, the water level depth is 2.3 meters, the elevation of the top surface of the top plate 1 is -0.500 meters, and the ground elevation is -0.200 meters (the soil covering thickness is 0.3 meters); the design value of the top surface load is -61 KN / m 2 downward (-11 KN / m when anti-floating 2 downward), and the design value of the bottom plate load is -50 KN / m 2 downward (when anti-floating, the design value of the bottom plate load of the present invention is 31 KN / m 2Upward, the design value of the floor slab load in the prior art is 41 KN / m 2 Upward (considering that the influence of the beam increases the floor height by 0.7 m). The plane size of the fire pump room (including the staircase) is 10 m by 8.3 m.

[0042] The practice of the prior art is as follows: the top slab 1 has a thickness of 0.2 m, and the bottom slab 2 has a thickness of 0.3 m; three beams are arranged in both directions on the top and bottom slabs, and each direction is divided into 4 blocks; the top beam 9 has a cross-sectional width of 0.4 m and a height of 0.9 m; the bottom beam 10 has a cross-sectional width of 0.5 m and a height of 1.0 m. The top and bottom slabs of the fire pump room 11 (including the staircase) are each provided with two one-way beams and are divided into 3 blocks in one direction; the top beam of the fire pump room 11 has a cross-sectional width of 0.3 m and a height of 0.9 m; the bottom beam of the fire pump room 11 has a cross-sectional width of 0.5 m and a height of 1.0 m.

[0043] The practice of the present invention is as follows: the top slab 1 has a thickness of 0.2 m, and the bottom slab 2 has a thickness of 0.3 m; three partition walls 4 (with water passing holes 5) are arranged unidirectionally, and the inner part of the underground water tank is divided into 4 blocks unidirectionally. The fire pump room 11 (including the staircase) is provided with one internal partition wall unidirectionally (that is, the staircase is separated from the pump room, and the masonry wall is changed to a reinforced concrete wall) and is divided into 2 blocks unidirectionally.

[0044] In the practices of the prior art and the present invention, both are designed according to the Code for Design of Concrete Structures (GB50010 - 2010), and the actual reinforcement is selected according to the calculated value. The result indexes are shown in Table 1 below:

[0045] Table 1 Comparison Table of Indexes between the Prior Art and the Present Invention

[0046]

[0047] As can be seen from the above table, under the same design conditions and meeting the design requirements, compared with the practice of the underground water tank in the prior art, according to the practice of the underground water tank of the present invention, there are obvious reductions in the concrete consumption, earthwork volume, and steel reinforcement quantity. At the same time, through actual engineering measurement, the cost of the underground water tank in the prior art is about 411,025 yuan, and that of the present invention is 281,481 yuan, with a relative reduction of 129,544 yuan. The savings in cost materials can reduce the cost by at least 30%.

[0048] Furthermore, in engineering calculations, according to the deformation calculation formula:

[0049]

[0050] When the load q and the span l are the same, the greater the stiffness B, the smaller the deformation f, and the smaller the concrete reinforcement is also.

[0051] According to the stiffness formula B = EI, where the elastic modulus E is a fixed value of the material property, therefore, the larger the cross-sectional moment of inertia I, the greater the stiffness.

[0052] In this embodiment, as Figure 8 , 9 shown, according to the design conditions of the above-mentioned prior art, a coordinate system is established at the contact center of the top plate 1 and the top beam 9, and a coordinate system is established at the contact center of the bottom plate 2 and the bottom beam 10. Using the calculation formula for the moment of inertia of the cross-section in material mechanics, it is calculated that the moment of inertia of the cross-section of the top plate 1 of the water tank in the prior art and its top beam 9 = 36581317204, and the moment of inertia of the cross-section of the bottom plate 2 of the water tank in the prior art and its bottom beam 10 = 84041666668.

[0053] As Figure 2 , 4 shown, in this embodiment, the top plate 1, the bottom plate 2 and the partition wall 4 of the attached underground water tank of the present invention form an I-shaped cross-section beam structure. As Figure 10 shown, according to the design conditions of the present invention above, a coordinate system is established at the vertical center of the partition wall 4 of the present invention. Under the same conditions, the moment of inertia of the overall beam cross-section of the attached underground water tank of the present invention = 2635717118474. The result is much larger than that of the traditional attached underground water tank. Therefore, the attached underground water tank of the present invention has stronger stiffness under the same size conditions. Furthermore, under the condition of sufficient stiffness, the attached underground water tank of the present invention can relatively use less materials.

[0054] Material mechanics is a compulsory professional basic course for undergraduate students majoring in engineering. The calculation formula for the moment of inertia of the cross-section is common knowledge well-known to those skilled in the art and will not be elaborated here.

[0055] Embodiment 2: This embodiment provides a different attached underground water tank. Different from Embodiment 1, in this embodiment, when meeting the actual requirements, the partition wall can be set as a truss structure to further improve the space utilization rate.

[0056] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0057] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0058] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

Claims

1. An attached underground water pool, characterized in that: It includes a top plate and a bottom plate arranged along the vertical interval, the top plate and the bottom plate are surrounded by walls, and multiple partition walls are arranged between the top plate and the bottom plate along the horizontal interval, the length of the partition wall extends along the longitudinal direction, the upper and lower ends of the partition wall are respectively supported and connected to the bottom surface of the top plate and the top surface of the bottom plate, the partition wall divides the space between the top plate and the bottom plate into multiple water storage units, and water passages are provided between adjacent water storage units.

2. The attached underground pool according to claim 1, characterized in that: The longitudinal ends of the partition wall are respectively connected to the surrounding walls on the corresponding sides, and the water passage is a water hole opened on the partition wall.

3. The attached underground pool according to claim 1, characterized in that: The partition wall is provided with a plurality of water holes at intervals along its length direction.

4. The attached underground pool according to claim 3, characterized in that: The partition walls are arranged at equal intervals in the transverse direction, and the water holes of each partition wall are arranged symmetrically in the longitudinal direction with the longitudinal midpoint of the partition wall as the symmetry point.

5. The attached underground pool according to claim 1, characterized in that: A base is respectively arranged at the four corners of the bottom plate, the top surface of the bottom plate is flush with the top surface of the base, the bottom plate is fixed to the base, an upwardly extending support column is arranged on the base, and the corners formed by the top plate and the walls on both sides adjacent to it are inserted and fixed in the support column.

Images