强动载作用下钢筋混凝土梁板结构面力效应的增量解法  

Incremental Solution of Membrane Action on RC Beam-slabs Subjected to Severe Dynamic Load

作　　者：陈力[1] 方秦[1] 郭志昆[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007

出　　处：《兵工学报》2010年第6期735-740,共6页Acta Armamentarii

基　　金：国家杰出青年科学基金(50525825);国家科技支撑计划基金(2006BAJ13B02)

摘　　要：为了研究强动载作用下钢筋混凝土结构的面力效应问题,在钢筋混凝土梁板结构面力效应的增量方法静力分析模型基础上考虑了材料的平均应变速率效应,通过等效单自由度体系建立了能够分析动载作用下考虑面力效应的钢筋混凝土结构动力响应的增量理论分析方法,并编制了相关的计算程序。将理论计算结果与相关试验数据进行了比较,结果表明:本文方法计算出的结果与试验数据吻合较好,面力效应可以大幅提高钢筋混凝土结构的动抗力,计算和设计中不应被忽略。To investigate the compressive membrane action of the reinforced concrete structures subjected to severe dynamic loads,a new analytical method was proposed, which considered an average strain rate effect based on the static incremental method of membrane action and could predict the dynamic responses of concrete beams with the action of membrane force under blast loads based on an equivalent single degree of freedom system. A good consistency was observed between the experimental data and＇the analytical results. The membrane force can increase the dynamic resistance greatly, which can not be neglected in design and calculation of the structure.

关 键 词：工程结构 强动载 面力效应 钢筋混凝土 梁板结构 结构抗力 

分 类 号：TJ91[兵器科学与技术—武器系统与运用工程]