Basement bottom plate structure adopting prestress technology

Abstract

The utility model discloses a basement bottom plate structure adopting a prestress technology, and relates to the technical field of prestress bottom plates, the basement bottom plate structure comprises a bottom plate, a cover plate, a plurality of first reinforcing steel bars arranged in the bottom plate and the cover plate and a plurality of second reinforcing steel bars arranged in the cover plate, the bottom plate is provided with a baffle, the baffle is arranged on the bottom plate in parallel, and the cover plate is provided with a connecting plate; the connecting plates are arranged on the edges of the two sides of the cover plate in parallel, stress plates parallel to the connecting plates are arranged in the center of the cover plate, prestressed tendons are arranged on the stress plates, the two ends of the prestressed tendons are fixedly connected with the connecting plates respectively, and the bottom plate and the cover plate are the same in size. A plurality of connecting holes which are evenly distributed in an array mode are formed in the connecting plate, and one ends of prestressed tendons are fixed in the connecting holes. The problems of prestress loss, stress influence and the like caused by overlarge basement area and overlong prestressed tendons are solved by adopting the sectional prestressed tendons, and the construction steps are reduced, the working efficiency is improved, the time is saved and the construction period is shortened by adopting sectional splicing type laying and pouring.

Description

Technical Field

[0001] This application relates to the field of prestressed slab technology, and in particular to a basement slab structure employing prestressed technology. Background Technology

[0002] Prestressing technology is often used in the construction of basement structures to strengthen the strength of the base slab. Prestressing is a technology used in building structures, mainly to enhance the load-bearing capacity and crack resistance of the structure. Prestressing technology applies pressure to the concrete structure in advance, so that the structure can resist greater stress when bearing normal service loads.

[0003] In existing technologies, steel mesh is usually used in conjunction with cement pouring in basement floor slab structures. During the solidification process, the steel bars are stretched by machine to provide prestress to the steel bars and increase the strength of the floor slab. However, since basements are usually long buildings, excessively long steel bars will cause prestress loss and affect the load-bearing capacity.

[0004] Regarding the aforementioned technologies, the inventors believe that a segmented structural splicing method can be used to reduce the length of the prestressing tendons, thereby avoiding prestress loss due to excessive prestressing tendons and thus affecting structural stability. Utility Model Content

[0005] The purpose of this application is to provide a basement floor slab structure using prestressed technology to improve the problem of prestress loss caused by excessively long prestressing tendons, which affects the stress distribution.

[0006] This application provides a basement floor slab structure using prestressed technology, employing the following technical solution:

[0007] A basement floor slab structure employing prestressed technology includes a floor slab, a cover plate, and a plurality of first reinforcing bars embedded in the floor slab and the cover plate, and a plurality of second reinforcing bars embedded in the cover plate. A baffle is provided on the floor slab, and the baffle is arranged parallel to the floor slab. A connecting plate is provided on the cover plate, and the connecting plate is arranged parallel to the two sides of the cover plate. A stress plate is provided at the center of the cover plate, parallel to the connecting plate. Prestressing tendons are provided on the stress plate, and the two ends of the prestressing tendons are fixedly connected to the connecting plate respectively.

[0008] By adopting the above technical solution, curved segmented prestressing tendons are fixedly installed inside the base plate, which improves the prestress loss on the prestressing tendons and avoids affecting the stress.

[0009] Optionally, the base plate and the cover plate are the same size, and the outer side of the baffle is attached to the inner side of the connecting plate.

[0010] By adopting the above technical solutions, the overall regularity of the device is ensured, which facilitates the splicing and laying of the entire device.

[0011] Optionally, a plurality of first through holes are provided on one side of the base plate in a uniform array, and a first reinforcing bar is provided in the first through hole.

[0012] By adopting the above technical solution, the setting of the first through hole facilitates the connection between different base plates through the first steel bar, which is convenient for splicing and laying between base plates. The first steel bar facilitates the subsequent addition of prestress by the machine to enhance the strength of the base plate.

[0013] Optionally, a plurality of second through holes are provided on one side of the cover plate in a uniform array, and a second reinforcing bar is provided in the second through hole.

[0014] By adopting the above technical solution, the setting of the second through hole facilitates the connection between different cover plates through the second through hole, which is convenient for splicing and laying between cover plates. The second steel bar facilitates the subsequent addition of prestress by the machine to enhance the strength of the cover plate.

[0015] Optionally, the connecting plate is provided with a plurality of uniformly arrayed connecting holes, and one end of a prestressing tendon is fixed in the connecting hole.

[0016] By adopting the above technical solution, the prestressing tendons are fixed through the connecting holes to maintain stability and prevent prestress loss caused by the swaying of the prestressing tendons.

[0017] Optionally, the stress plate is provided with a number of fixing holes corresponding to the connecting holes. The fixing holes are at a higher horizontal level than the connecting holes and are used for inserting prestressing tendons.

[0018] By adopting the above technical solution, the prestressing tendons are bent and installed by the height difference between the fixing hole and the connecting hole, thereby adding stress to the prestressing tendons and enhancing the structural strength.

[0019] Optionally, the baffle is provided with a number of straight slots corresponding to the connection holes, and the prestressed tendons pass through the straight slots and are fixed in the connection holes.

[0020] By adopting the above technical solution, the straight groove provides a certain amount of space for the prestressed tendon to bend under stress, thus avoiding obstruction by the baffle when the prestressed tendon is bent to apply stress.

[0021] Optionally, concrete is poured into the cavity between the baffle and the stress plate.

[0022] By adopting the above technical solution, the concrete and prestressed tendons are combined to stabilize and fix the prestressed tendons, while enhancing the overall strength of the device.

[0023] In summary, this application includes at least one of the following beneficial technical effects of using prestressed technology in the construction of basement floor slabs:

[0024] 1. By adopting segmented prestressed tendons, problems such as prestress loss and impact on load-bearing caused by excessive length of prestressed tendons due to the large area of ​​the basement can be solved.

[0025] 2. By adopting a segmented splicing method for laying and pouring, construction steps are reduced, work efficiency is improved, time is saved, and the construction period is accelerated. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the splicing structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the prestressed tendon structure of this utility model.

[0029] In the figure, 1 is the base plate; 2 is the baffle; 3 is the straight groove; 4 is the cover plate; 5 is the connecting plate; 51 is the connecting hole; 6 is the stress plate; 61 is the fixing hole; 7 is the first reinforcing bar; 71 is the second reinforcing bar; 8 is the prestressed tendon; 9 is the concrete; 10 is the first through hole; and 11 is the second through hole. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0031] A basement floor slab structure employing prestressed technology, as shown in the reference. Figure 1 It includes a base plate 1, a cover plate 4, and a number of first steel bars 7 and a number of second steel bars 71 embedded in the base plate 1 and the cover plate 4. The parallel first steel bars 7 can be connected in series between the independent base plates 1 through the first through hole 10. The number of series connections is selected according to the area of ​​the basement and the amount of prestress. After the laying is completed, the first steel bars 7 and the second steel bars 71 are subjected to stress to strengthen the structure and enhance the structural stability.

[0032] Reference Figure 2 A baffle 2 is provided on the base plate 1, and the baffle 2 is arranged parallel to the base plate 1. A connecting plate 5 is provided on the cover plate 4, and the connecting plate 5 is arranged parallel to the two sides of the cover plate 4. A stress plate 6 is provided at the center of the cover plate 4 parallel to the connecting plate 5. The fit between the baffle 2 and the connecting plate 5 facilitates the fixing between the base plate 1 and the cover plate 4.

[0033] Reference Figure 3 The stress plate 6 is provided with prestressing tendons 8, and the two ends of the prestressing tendons 8 are fixedly connected to the connecting plate 5 respectively. The stress plate 6 is used in conjunction with the connecting plate 5 to fix the prestressing tendons 8.

[0034] Referring to Figure 3, the base plate 1 and the cover plate 4 are the same size. The outer side of the baffle 2 is fitted against the inner side of the connecting plate 5. The fitting between the baffle 2 and the connecting plate 5 forms a regular shape, facilitating the fitting and splicing of devices.

[0035] Reference Figure 1 The base plate 1 has several uniformly arranged first through holes 10 on one side, and first steel bars 7 are installed in the first through holes 10. The base plate 1 is connected by the first steel bars 7 through the connection of the first through holes 10.

[0036] Reference Figure 1 The cover plate 4 has several evenly distributed second through holes 11 on one side. The second through holes 11 are provided with second steel bars 71. The cover plate 4 is connected by the second steel bars 71 through the connection of the second through holes 11.

[0037] Reference Figure 3 The connecting plate 5 is provided with several evenly distributed connecting holes 51. One end of the prestressing tendon 8 is fixed in the connecting hole 51, and the two ends of the prestressing tendon 8 are fixed in the connecting plates 5 on both sides.

[0038] Reference Figure 3 The stress plate 6 is provided with several fixing holes 61 corresponding to the connecting holes 51. The horizontal height of the fixing holes 61 is higher than that of the connecting holes 51. The fixing holes 61 are used for the insertion of prestressing tendons 8. The prestressing tendons 8 are bent by the height difference to generate stored stress.

[0039] Reference Figure 3 The baffle 2 is provided with several straight slots 3 corresponding to the connection holes 51. The prestressing tendon 8 passes through the straight slots 3 and is fixed in the connection holes 51. When the prestressing tendon 8 bends, the straight slots 3 leave a certain space for the prestressing tendon 8 to bend and move, so as to avoid hindering the bending of the prestressing tendon 8.

[0040] Reference Figure 2 Concrete 9 is poured into the cavity between the baffle 2 and the stress plate 6, and the concrete 9 wraps the prestressed tendons 8 to further improve the strength of the device.

[0041] The implementation principle of this application embodiment is as follows:

[0042] In use, the device is laid in a pre-prepared basement area. The device is connected in series with the first reinforcing bar 7 in the first through hole 10 and the second reinforcing bar 71 in the second through hole 11 according to the required area of ​​the basement. Considering that the first reinforcing bar 7 and the second reinforcing bar 71 may cause prestress loss if they are too long, the length of the first reinforcing bar 7 and the second reinforcing bar 71 can be adjusted and the device is connected in segments. The sides of the device are placed together by splicing. After the splicing and laying are completed, concrete 9 is injected into the cavity to fix the prestressing tendons 8 in the cavity and enhance the strength of the device. Then, the first reinforcing bar 7 and the second reinforcing bar 71 are tensioned by machine to give them stress. Afterwards, the top surface of the device can be beautified by plastering and other methods to make it a complete whole.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A basement floor slab structure employing prestressed technology, comprising a floor slab (1), a cover plate (4), and a plurality of first reinforcing bars (7) embedded in the floor slab (1) and the cover plate (4) and a plurality of second reinforcing bars (71) embedded in the cover plate (4), characterized in that: A baffle (2) is provided on the base plate (1), and the baffle (2) is arranged parallel to the base plate (1). A connecting plate (5) is provided on the cover plate (4), and the connecting plate (5) is arranged parallel to the two sides of the cover plate (4). A stress plate (6) is provided parallel to the connecting plate (5) at the center of the cover plate (4). A prestressing tendon (8) is provided on the stress plate (6), and the two ends of the prestressing tendon (8) are fixedly connected to the connecting plate (5) respectively.

2. The basement floor slab structure using prestressed technology according to claim 1, characterized in that: The bottom plate (1) and the cover plate (4) are the same size, and the outer side of the baffle (2) is attached to the inner side of the connecting plate (5).

3. The basement floor slab structure using prestressed technology according to claim 1, characterized in that: The bottom plate (1) has a plurality of uniformly arrayed first through holes (10) on one side, and a first steel bar (7) is provided in the first through hole (10).

4. A basement floor slab structure employing prestressed technology according to claim 1, characterized in that: The cover plate (4) has a number of uniformly arrayed second through holes (11) on one side, and a second steel bar (71) is provided in the second through hole (11).

5. A basement floor slab structure employing prestressed technology according to claim 1, characterized in that: The connecting plate (5) is provided with a number of uniformly arrayed connecting holes (51), and one end of a prestressed tendon (8) is fixed in the connecting hole (51).

6. A basement floor slab structure employing prestressed technology according to claim 1, characterized in that: The stress plate (6) is provided with a number of fixing holes (61) corresponding to the connecting hole (51). The fixing holes (61) are at a higher horizontal level than the connecting hole (51). The fixing holes (61) are used for the insertion of prestressing tendons (8).

7. A basement floor slab structure employing prestressed technology according to claim 1, characterized in that: The baffle (2) is provided with several straight slots (3) corresponding to the connecting holes (51), and the prestressed tendons (8) pass through the straight slots (3) and are fixed in the connecting holes (51).

8. A basement floor slab structure employing prestressed technology according to claim 1, characterized in that: Concrete (9) is poured into the cavity between the baffle (2) and the stress plate (6).

Images