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Shear wall that can eliminate the effect of floor prestressed tension constraints

A shear wall and prestressing technology, applied in the field of prestressed floor construction, can solve problems such as easy cracks in prestressed floors, and achieve the effects of less difficulty in construction, avoiding cracks and shortening construction period

Active Publication Date: 2019-07-19
中国华西企业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual construction process, when the prestressed floor is stretched by post-tensioning, the shear wall body will have a restraining effect on the prestressed floor. In order to ensure the support strength of the floor in some construction projects, the shear wall body generally does not Taking into account the restraint effect of the stress slab, the local prestressed slab is prone to cracks

Method used

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  • Shear wall that can eliminate the effect of floor prestressed tension constraints
  • Shear wall that can eliminate the effect of floor prestressed tension constraints
  • Shear wall that can eliminate the effect of floor prestressed tension constraints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1~5 As shown, this embodiment includes a rectangular frame composed of two shear wall bodies I1 and two shear wall bodies II8, the two ends of the shear wall body III9 are respectively perpendicular to the two shear wall bodies II and the rectangular frame The inside of the frame is divided into two independent areas, and two post-cast strips I2 are arranged on the two shear wall bodies I1 and shear wall bodies III9, and the height of the two post-cast strips I2 is the same as the shear wall body III9. The body of the force wall I1 is equal in height. By setting the vertical post-casting belt I2 on the shear wall, the post-casting belt I2 located under the large-span floor can be poured quickly after the tensioning is completed under the premise of ensuring that the shear wall eliminates the constraint effect on the floor slab. Compared with the horizontal post-casting zone 4, the construction difficulty of the vertical post-casting zone I2 is relativel...

Embodiment 2

[0033] Such as Figure 1~5 As shown, this embodiment is based on Embodiment 1, and the distance between the post-casting strip I2 and the support column 6 at the right angle of the rectangular frame is 1.8-2.2 meters. The main tensile stress of the corresponding prestressed floor 3 is within the range of 3.0-3.3MPa before the setting of the post-casting zone I2, and the restraint effect of the shear wall body I on the prestressed floor 3 in this section is relative to that of the shear wall. The other areas of the force wall body I are relatively larger, that is, the post-cast strip I2 is set at a position 1.8 to 2.2 meters away from the right angle point of the rectangular frame. At this time, the post-cast strip I2 is at the intersection of the first horizontal span and the fourth longitudinal span. The main tensile stress of the prestressed floor 3 corresponding to this part is the same as that of the prestressed floor 3 corresponding to the intersection of the first horizo...

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Abstract

The invention discloses a shear wall capable of removing restraint influences on prestress tensioning of a floor. The shear wall capable of removing the restraint influences on the prestress tensioning of the floor comprises two shear wall bodies I and a rectangular frame formed by two shear wall bodies II. The two ends of a shear body III are correspondingly perpendicular to the two shear wall bodies II and divides the interior of the rectangular frame into two independent areas. The two shear wall bodies I and the shear wall body III are each provided with two post-cast strips I. The height of the two post-cast strips I are the same with the shear wall main bodies I. According to the shear wall capable of removing the restraint influences on the prestress tensioning of the floor, through the arrangement of the post-cast strips I on the shear wall, under the premise of ensuring that the shear wall bodies remove the restraint influences on the floor, the post-cast strips I located below a large-span floor can be quickly casted after tensioning, compared with horizontal post-cast strips, the constructional difficulties of the vertical post-cast strips I are relatively low, compared with the span of the floor, the overall length of the vertical post-cast strips I is relatively short, and the construction period of later period casting is relatively shorted.

Description

technical field [0001] The invention relates to the field of prestressed floor slab construction, in particular to a shear wall capable of eliminating the influence of floor slab prestressed tension constraints. Background technique [0002] The prestressed floor slab is a large-span space structure. It not only provides a flexible layout of the building plane, but also improves the use function and effective area of ​​the building. It also reduces the structural height and increases the indoor clear height. Flat features. The shear wall body under the prestressed floor is also called wind-resistant wall, seismic wall or structural wall. It is used to bear the horizontal load caused by wind load or earthquake in the structure. The shear wall body can effectively prevent the building structure from being sheared. Everything is destroyed. At present, the construction method of the shear wall body usually takes the deformation joint as the boundary and organizes the construct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/04E04B1/06E04B2/56
CPCE04B1/04E04B1/06E04B2/56
Inventor 周俊侯丽萍宋德良向智力蒋世鹏
Owner 中国华西企业股份有限公司