轻骨料混凝土-型钢组合梁弯曲性能的数值模拟  

NUMERICAL SIMULATION ON FLEXURAL PERFORMANCE OF STEEL-REINFORCED CONCRETE COMPOSITE BEAM WITH LIGHT-WEIGHT CONCRETE

作　　者：方有珍[1] 邵永健[1] 孙国华[1] 王磊[2] 

机构地区：[1]苏州科技学院土木学院江苏省重点实验室,江苏苏州215011 [2]苏州市职业大学计算机工程系,江苏苏州215104

出　　处：《工程力学》2010年第10期110-118,共9页Engineering Mechanics

基　　金：建设部科技攻关项目(01-2-20);江苏省建设系统科技计划项目(JS20042);苏州市引进紧缺高层次人才资助

摘　　要：为了系统研究SRC组合梁构件的弯曲性能,结合相关文献编制的有限元程序,编制了组合梁构件受弯性能的非线性有限元程序SRCBNP,对前期进行的系列试验构件进行了有限元的模拟,得到了相应试件的荷载位移曲线、破坏模式和SRCB-1试件混凝土裂缝开展与压溃过程,并与试验结果进行对比分析,结果表明:有限元计算与试验结论吻合较好,从而验证了程序的可靠性。同时还进一步分析了相关参数RC强度、截面组成对梁弯曲性能的影响规律,供相关规程规范的制订加以参考。To investigate the flexural performance of a steel-reinforced concrete composite beam with light-weight concrete, the nonlinear finite element program named SRCBNP was developed and combined with the program developed in the relevant references. A serial of specimens in the experimental investigation are selected as the subjects to be simulated respectively, the load-deflection behaviors and failure modes were derived, and forming and development of crack and crushing of concrete in SRCB-1 were obtained, and the analytical results agree well with the test conclusions. Moreover a series of design parameters such as RC strength and section composition were further analyzed, the influence behavior of them were summarized to provide the theoretical basis for relative specifications and code amendments.

关 键 词：轻骨料混凝土 SRC组合梁 弯曲性能 有限元法 模拟 

分 类 号：TU398.9[建筑科学—结构工程]