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(同濟(jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室，上海 200092)
［摘要］為了研究剪力墻的地震損傷和基于位移的抗震性能設(shè)計(jì)，對(duì)7片不同設(shè)計(jì)參數(shù)的鋼筋混凝土剪力墻構(gòu)件進(jìn)行了低周反復(fù)加載試驗(yàn)，記錄了構(gòu)件各損傷階段的變形和裂縫寬度。根據(jù)試驗(yàn)結(jié)果，對(duì)比研究了軸壓比、邊緣構(gòu)件配箍率、截面形式對(duì)剪力墻構(gòu)件延性、承載力、變形特點(diǎn)和地震損傷的影響規(guī)律。研究結(jié)果表明：隨著軸壓比增大，構(gòu)件承載力增大，剪切效應(yīng)增大，延性降低，殘余裂縫率減??；隨著變形的增大和損傷加劇，構(gòu)件剪切效應(yīng)增強(qiáng)；工字形截面構(gòu)件剪切效應(yīng)更明顯，裂縫開展較慢。
［關(guān)鍵詞］鋼筋混凝土剪力墻；低周反復(fù)荷載試驗(yàn)；地震損傷；延性
中圖分類號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)02-0113-05
Experiment on seismic damage behavior of RC shear walls
Jiang Huanjun, Ying Yong, Wang Bin, Zhang Yongxin(State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:In order to study reinforced concrete shear walls seismic damage and displacement-based seismic design, low cyclic loading test was carried out on seven reinforced concrete shear wall members with different design parameters. The deformation and crack width corresponding to individual damage states were recorded. Based on the test results, the influence of axial compressive ratio, stirrup ratio of the boundary element and cross-section shape on the ductility, bearing capacity, deformation characteristic and seismic damage was investigated. The results show that bearing capacity and shear effect increase with axial compression ratio increasing, but ductility and residual crack ratio decrease. With the deformation and damage increasing, the shear effect increases. I shaped cross section shear walls have more shear effect, and crack developing slowly.
Keywords:reinforced concrete shear wall; low cyclic loading test; seismic damage; ductility
*中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目,國(guó)家“973”重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2007CB714202)。
作者簡(jiǎn)介：蔣歡軍，教授，博士，Email：jhj73@#edu.cn。
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