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梁興文，寇佳亮，鄧明科（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）

［摘要］在基于性能的抗震設(shè)計(jì)中，結(jié)構(gòu)的性能指標(biāo)是一個(gè)必需的重要參數(shù)?；?1個(gè)剪跨比分別為2.1，1.5和1.0的矩形截面、帶端柱和型鋼高強(qiáng)混凝土剪力墻的抗震性能試驗(yàn)資料，分析了各種剪力墻的破壞形態(tài)。將剪力墻的性能劃分為三個(gè)水平，即：使用良好、生命安全和防止倒塌，分別給出了剪力墻發(fā)生彎曲（彎曲剪切）破壞和剪切破壞時(shí)三性能水平的失效判別標(biāo)準(zhǔn)，確定了三性能水平極限狀態(tài)時(shí)各剪力墻的位移角平均值。分析結(jié)果表明，高強(qiáng)混凝土剪力墻在三性能水平的位移角分布均基本符合正態(tài)分布，其在生命安全和防止倒塌性能水平位移角平均值與FEMA273的建議值很接近，而我國抗震規(guī)范建議的彈性位移角限值和彈塑性位移角限值的保證率系數(shù)分別為2.18和1.58。根據(jù)試驗(yàn)結(jié)果，提出了高強(qiáng)混凝土剪力墻結(jié)構(gòu)三性能水平具有95%保證率的位移角限值。

［關(guān)鍵詞］高強(qiáng)混凝土；剪力墻；性能水平；性能指標(biāo)；位移角

中圖分類號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)04-0090-04

Research on the performance index of high-strength concrete shear walls

Liang Xingwen，Kou Jialiang，Deng Mingke(Xi’an University of Architecture and Technology, Xi’an 710055, China)

Abstract:In the performance-based seismic design, performance index of the structure is a necessary and important parameter. According to the seismic performance test data of 21 high-strength concrete shear walls with rectangular cross-section, boundary column and steel which shear span ratio are 2.1, 1.5 and 1.0, various failure modes of shear walls are analyzed. The performance of shear walls is divided into three levels, that is namely serviceability, life-safety and collapse protection, and the failure criterions of the three performance levels are presented respectively when flexural (flexural-shear) failure and shear failure are occurred on shear walls. Meanwhile, the mean values of all the shear wall drift ratios for ultimate state of the three performance levels are determined. The analysis results show that the drift ratio distribution of shear walls for three performance levels are basically consistent with normal distribution, and drift ratio mean values of life-safety and collapse protection performances are closed to the recommended values of FEMA273, while assurance factor of the elastic drift ratio and elasticplastic drift ratio limit value for Chinese seismic code are 2.18 and 1.58 respectively. According to the experimental results, drift ratio limit value with 95% assurance factor for the three performance levels of shear wall structure are presented.

Keywords:high-strength concrete; shear wall; performance level; performance index; drift ratio

*國家自然科學(xué)基金項(xiàng)目(51078305，50908187)，高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金項(xiàng)目(20070703002)，陜西省重點(diǎn)學(xué)科建設(shè)專項(xiàng)資金項(xiàng)目(E01001,E01003)。

作者簡介：梁興文，碩士，教授， Email: liangxingwen2000@yahoo.com.cn。

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