次梁支座下的门框墙计算方法
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（大连市建筑设计研究院有限公司，大连 116021）[摘要] 车库入口作为人防的主要出入口时，其门框墙上挡墙承受较大的爆炸水平荷载，采用规范的计算方法得到的配筋结果很大，甚至出现超筋现象。将上挡墙中部的次梁作为上挡墙下部横梁的支座，减小其计算跨度，得到了经济合理且满足设计要求的结果。[关键词] 人防工程；地下车库；主要出入口；门框墙中图分类号：TU93+3 文献标识码：A 文章编号：1002-848X(2013)S2-0129-03Calculation method of the doorframe wall under the secondary beam as supportLiu Jianqiang, Wang Jinlai(Dalian Architectural Design & Research Co., Ltd, Dalian 116021,China)Abstract: When the garage entrance is the main entrance to the civil air defence basement, doorframe wall affords the large horizontal load explosion. Using the standard method, the reinforcing bars of the doorframe wall is great or out of the bounds. Regarded the secondary beam as the support of the doorframe wall, reduced the calculation span, then got the economy and reasonable design results .Keywords: civil air defence; underground garage; main entrance; doorframe wall
