frp在混凝土剪力墙抗震加固中的创新应用

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI:10.14359/14893

K. Kobayashi

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引用次数: 9

摘要

内容提要:在混凝土墙板的网格交叉处钻小孔。一束芳纶丝穿过这些孔，这样它就能把它们按对角线的方向缝起来。因此，混凝土墙板被封闭成一个由芳纶缝纫带制成的网。抗剪能力提高25%以上。玻璃钢缝带在压应力下对混凝土起约束作用，而不是拉伸支撑。其性能有望优于FRP片材包覆体系，且纤维用量少，加固效果好。提出这种加固思想的初衷是将其应用于填充砖墙。通过对按比例的混凝土剪力墙进行试验，验证了这一概念及其有效性。

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Innovative Application of FRPs for Seismic Strengthening of RC Shear Wall

Synopsis: The small holes were drilled at the grid intersection on the concrete wall panel. A bundle of aramid strands was passed through the holes so that it sewed them in cross diagonal directions. As a result, the concrete wall panel was shut up into a net made of aramid sewing bands. Shear capacity increased by more than 25%. FRP sewing bands worked as confinement to the concrete under compressive stress rather than the tensile braces. Its performance is expected to be better than that reinforced by FRP sheet wrapping system, and more strengthening effect will be obtained with less amount of fiber material. This strengthening idea is originally proposed to apply it to the infill-brick wall. The concept and the effectiveness of the idea were verified by the tests on the scaled RC shear wall.

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SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures

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