【摘要】 砖拱结构的防空洞上建筑物基础要进行技术处理：或改变基础的类型，或增大基础的断面，从而增大基础的承载力，同时应增大上部结构的刚度，对防空洞也要进行加固。更多还原

【Abstract】 Some technical measures should be taken when constructing on the arch air raid shelter made of blocks,either by ching the type of the base, or by widening the cross section of it, thus to strengthen its bearing capacity.At the same time, thc rigidity of the upper part should be enforced and the air raid shelter be consolidated.更多还原