问题 单项选择题

某教学楼平面布置如题图,采用装配式钢筋混凝土楼(屋)盖,外墙均为370mm墙,隔墙为120mm,其余均为240mm墙。底层墙高4.2m(算至基础顶),M5砂浆砌筑,隔墙墙高3.5m,用M2.5砂浆砌筑。

隔断墙的高厚比和允许高厚比最接近下列()项数值。

A.25.6;29.5

B.29.17;29.5

C.29.17;36.9

D.30.69;36.98

答案

参考答案:B

解析:

隔断墙两侧往往与纵墙拉结不好,按两侧无拉结考虑,隔断墙上端砌筑一般都采取措施顶住楼板,故可按不动铰支座考虑。这样隔断墙可按两端不动铰支座确定计算高度。取⑥轴隔断墙进行验算

H=H0=3.5m h=120mm

(满足要求)

阅读理解

阅读短文,选择正确答案。

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单项选择题