Experimental investigation on seismic behavior of two types of buckling-restrained low yield point steel plate shear walls with multi-stiffeners

被引：0

作者：

Fang C. ^{[1
]}

Hao J. ^{[1
]}

Fan C. ^{[1
]}

Yuan C. ^{[1
]}

Shen X. ^{[1
]}

机构：

[1] School of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an

来源：

| 1600年 / Science Press卷 / 38期

关键词：

Buckling-restrained; Low yield point steel; Multi-stiffeners; Quasi-static test; Seismic behavior; Steel plate shear wall;

D O I：

10.14006/j.jzjgxb.2017.10.005

中图分类号：

学科分类号：

摘要：

Quasi-static tests were carried out on two 1∶3 scaled specimens of low yield point steel plate shear walls, whose infill plate utilized two types of buckling-restrained details with multi-stiffeners respectively. The comparative analyses on failure modes, hysteretic behavior, ductility, lateral stiffness, load bearing capacity and energy dissipation capacity between both types were conducted after the experiment. Then shear distribution between infill panel and perimeter frame was investigated. Next validity of stiffness threshold in frame columns and different deformation modes of steel plate shear walls (SPSWs) were discussed on the basis of above analyses. Research results show that the buckling-restrained detail with two side multi-stiffeners can effectively avoid overall elastic buckling of steel plate, reaching its design target of 'yielding before buckling'. Failure mechanism on both of the specimens are reasonable, in according with design concepts of 'strong outside frame-weak infill panel' and 'strong column-weak beam', and associating in-plane flexure-shear failure modes eventually. Hysteretic loops of the new structure are spindle, which also exhibits stable bearing capacity and plastic deformation ability, as well as substantial ductility and large initial lateral stiffness. The transfer of shear distribution between outside frame and infill plate is stead and orderly, indicating them can compose reliable dual system. Approximated formulas for calculating maximum design shear demand and shear strength at column base are presented to examine whether the column occurring shear yielding premature. Finally, design formulas on shear strength Vs and bending strength Vm for SPSWs are proposed, in order to provide reference for structural engineers on preliminary selection of infill panel and perimeter frame. © 2017, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：38 / 50

页数：12

共 19 条

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