支撑失效下预应力钢板带-砖砌体组合墙墙变形特性

doi:10.13229/j.cnki.jdxbgxb.20240402

Abstract

Abstract:

To investigate the application effect of prestressed steel plate strip reinforcement technology in improving the load-bearing capacity of walls and reducing the degree of deformation， the deformation characteristics of prestressed steel plate strip brick masonry composite walls under applied loads were investigated by considering the failure state of supports.In the experiment， 7 specimens were carefully designed and reinforced with prestressed steel plates， each with different reinforcement situations. In the production of specimens， after pouring the bottom beam， a brick masonry wall is made. After pouring the top beam， the surface is smoothed to form an overall structure with the bottom beam and brick masonry wall. Transport the cured specimens to the laboratory for reinforcement with prestressed steel plates. The cutting length of the longitudinal steel plate strip should be consistent with the height of the wall. If vertical preloading stress is required， the cutting length will correspondingly increase by 2 or 4 mm. The horizontal steel plate strip matches the actual width of the wall. Install testing instruments and strain gauges， start loading until the support function of the composite wall fails， and stop the test loading.The results demonstrate a positive correlation between the reinforcement performance of prestressed steel plate strips on walls and the load-bearing capacity of the walls. Before the wall support fails， the curve shows a decreasing trend， followed by the failure of the wall support. A prestressed steel plate strip with strong reinforcement performance can reduce the strain value of the wall itself， that is， reduce the degree of deformation of the wall itself. The application of prestressed steel plate strips can significantly enhance the overall stiffness and stability of walls.

Key words: support failure, pre stressed steel plate strip, bottom beam, top beam, brick masonry walls, composite wall, wall deformation characteristics

CLC Number:

TU398.9

Wei-dong HAO,Jian-qi LI. Deformation characteristics of prestressed steel plate-brick masonry composite wall under support failure[J].Journal of Jilin University(Engineering and Technology Edition), 2025, 55(4): 1356-1362.

Figures/Tables 6

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References 16

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序号	试验仪器名称	型号	生产厂家
1	位移计	D55	欧尔博自动化科技有限公司
2	2 000 kN液压千斤顶	EFSW588	南方液压工具制造有限公司
3	静态应变仪	RG1557	一洋应振测试技术有限公司
4	静态伺服液压控制台	XDW784	一洋应振测试技术有限公司

Deformation characteristics of prestressed steel plate-brick masonry composite wall under support failure

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