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提问人:网友f******g 发布时间:2022年3月21日 08:34
[单项选择题]

某3层无筋砌体房屋(无吊车),现浇钢筋混凝土楼(屋)盖,刚性方案。墙体采用MU10级蒸压煤灰①,M7.5级水泥砂浆砌筑。施工质量控制等级为B级。安全等级二级。各层砖柱截面均为370mm×490mm...如何确定不利墙段 对砌体房屋进行截面抗震承载力验算时,就如何确定不利墙段的下述不同见解中,其中何项组合的内容是全部正确的 Ⅰ:选择竖向应力较大的墙段; Ⅱ:选择竖向应力较小的墙段; Ⅲ:选择从属面积较大的墙段; Ⅳ:选择从属面积较小的墙段。

A.Ⅰ+Ⅲ

B.Ⅰ+Ⅳ

C.Ⅱ+Ⅲ

D.Ⅱ+Ⅳ

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