问题 单项选择题

某建筑的设计图纸说明中标明建筑抗震烈度为7度,则表示()。

A.该建筑可抗7级地震,不会坍塌并保持完好

B.该建筑在遭受7度地震时,不会坍塌,可以继续修缮使用

C.该建筑所受烈度小于7度时,不会有任何破坏

D.该建筑可以承受7级地震,可能遭受破坏,但不会立即坍塌

答案

参考答案:B

解析:

此题有一定专业性,对于理论知识扎实的考生来说相对简单,主要考核抗震设防的基本思想和原则。

我国规范抗震设防的基本思想和原则是“三个水准”为抗震设防目标。简单地说就是“小震不坏、中震可修、大震不倒”。

“三个水准”的抗震设防目标是:当遭受低于本地区抗震设防烈度的多遇地震影响时,建筑物一般不受损坏或不需修理仍可继续使用;当遭受相当于本地区抗震设防烈度的地震影响时,可能损坏,经一般修理或不需修理仍可继续使用;当遭受高于本地区抗震设防烈度预估的罕遇地震影响时,不会倒塌或发生危及生命的严重破坏。

从本题可知,当建筑遭受7度地震时,可能损坏,经一般修理或不需修理仍可继续使用;当发生大于7度的地震时,建筑也不会倒塌或发生危及生命的严重破坏。

故本题正确选项应为“B.该建筑在遭受7度地震时,不会坍塌,可以继续修缮使用”。

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