STRESS-STRAIN CURVES FOR BRICK MASONRY IN BIAXIAL COMPRESSION
STRESS-STRAIN CURVES FOR BRICK MASONRY IN BIAXIAL COMPRESSION
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双轴压缩砖砌体的应力应变曲线
DOI：
10.1061/(asce)0733-9445(1992)118:6(1451
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
Sachchidanand Sinha
中科院分区：
文献类型：
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作者：
K. Naraine;Sachchidanand Sinha
提出了一种广义的方法来确定循环、双轴压缩下砖砌体的包络线、共点和稳定点曲线。该方法使用一系列相互作用曲线来预测不同主应力比下包络线、共点曲线和稳定点曲线的峰值应力。采用包络曲线上主应力比与峰值应力应变之间的经验关系确定相应的峰值应力应变。然后使用一般应力-应变方程来确定每个主应力比的包络线、共点和稳定点曲线。该方法是根据45个和18个半尺度砖砌体模型分别在双轴和单轴循环压缩加载下的测试结果开发的。试验样品360mm×360mm×115mm由半尺寸粘土砖115mm×55mm×35mm和6毫米厚的床缝砂浆构成。该方法简单、准确。
A generalized approach is proposed to determine the envelope, common‐point, and stability‐point curves for brick masonry in cyclic, biaxial compression. The approach uses a family of interaction curves to predict the peak stresses of the envelope, common‐point, and stability‐point curves at different principal stress ratios. The corresponding strains at the peak stresses are determined using an empirical relationship involving the principal stress ratio and the strain at the peak stress of the envelope curve. A general stress‐strain equation is then used to determine the envelope, common‐point, and stability‐point curves for each principal stress ratio. The method is developed using the test results of 45 and 18 half‐scale brick masonry models tested under biaxial and uniaxial cyclic compressive loading, respectively. The test specimens are 360mm×360mm×115mm constructed with half‐scale clay bricks 115mm×55mm×35mm and with 6 mm thick bed joint mortar. The proposed generalized approach is simple and accurate.