開洞砌體墻抗震性能的有限元分析*
胡亮霞1，楊威1，朱爾玉2，朱坤2，王滿生1，陳俞1
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(1 北京市房地產(chǎn)科學(xué)技術(shù)研究所， 北京 100021； 2 北京交通大學(xué)土木建筑工程學(xué)院， 北京 100044)
［摘要］砌體墻開設(shè)門窗洞口會導(dǎo)致其平面內(nèi)的剛度及抗剪承載力降低，而開洞砌體墻的分布不均衡又使得地震作用下整體結(jié)構(gòu)出現(xiàn)扭轉(zhuǎn)變形，從而加大地震震害。以3片開洞砌體墻的擬靜力試驗為原型，采用ABAQUS有限元程序?qū)?個模型（未加固的開洞砌體墻A-1、單面鋼筋網(wǎng)加固的開洞砌體墻A-2、單面鋼筋網(wǎng)和鋼窗框同時加固的開洞砌體墻A-3）進(jìn)行建模和非線性計算，得出了在低周反復(fù)水平荷載作用下砌體墻的荷載-位移滯回曲線，并通過對滯回曲線的處理，對比分析了應(yīng)力云圖、應(yīng)變云圖、滯回特性、砌體墻耗能、骨架曲線和剛度退化曲線，驗證了有限元模型的合理性和有效性，同時也驗證了加固措施的有效性。［關(guān)鍵詞］開洞砌體墻; 滯回曲線; 加固; 鋼窗框; 鋼絲網(wǎng)水泥砂漿中圖分類號：TU522 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)17-0077-06
Finite element analysis on seismic performance of masonry walls with openingsHu Liangxia1, Yang Wei1, Zhu Eryu2, Zhu Kun2, Wang Mansheng1, Chen Yu1(1 Beijing Institute of Real Estate Science and Technology, Beijing 100021, China; 2 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)Abstract: In-plane stiffness and shear capacity of masonry walls are decreased by openings. Along with unbalanced distribution of openings, torsion deformation which aggravates the seismic hazard easily occurs under seismic excitation. Based on the quasi-static experiments of three masonry walls with openings, 3 models of original model A-1, reinforced model A-2 by one-side mesh reinforcement mortar and reinforced model A-3 by both one-side mesh reinforcement mortar and steel window frame were established by ABAQUS software and nonlinear calculations were carried out. The loading-displacement hysteretic curves of all three models were obtained under the low-cyclic lateral loads. In analyses of hysteretic curves, stress and strain contours, hysteretic characteristics, energy dissipation of masonary walls, skeleton curves and stiffness degradation curves were compared. The FEM models as well as the reinforcement measures were verified to be reasonable and effective.Keywords: masonry wall with opening; hysteretic curve; reinforcement; steel window frame; mesh reinforcement mortar
*北京市財政支持項目資助（PXM2010-161102-096238）。作者簡介：胡亮霞，碩士，工程師，一級注冊結(jié)構(gòu)工程師，Email：huliangxia@126.com。
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