摘要
对于钢筋混凝土框架,考虑楼板与梁的协同作用可以更充分地体现结构静动力性能。本文首先采用分层壳单元模拟楼板,通过刚臂耦合梁板,建立了可以较好模拟梁板协同工作的框架结构有限元模型,并与其它3种采用简化假定的模型进行了比较。为了控制这种模型的分析误差,必须将梁、板划分为较小单元,所以需要耗费大量的计算机内存和时间。为此,比较分析了采用集群并行计算与普通串行计算的求解时间,结果说明对于中等到较大的框架模型,集群计算均可以大量减少计算时间。
For RC frame structures, models including floor slabs can simulate the static and dynamic behaviors more accurately. A finite element model considering cooperation between slabs and beams are proposed at first, where slabs are modelled by layered shell elements, and rigid links are used to couple the beams and slabs. Another three models using simplified assumptions or methods are also established to compare their performances with the proposed model. In order to minimize the errors caused by discrete cooperation, beams and slabs should be divided into small size elements, which require substantial computation resource. Therefore, the computation times to solve the proposed model, using a 4-node cluster and an ordinary PC, are compared and analysed, and the results show that the computation time can be reduced substantially for moderate and large models.
出处
《地震工程与工程振动》
CSCD
北大核心
2009年第1期63-69,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(9081501450608024)
教育部减震控制与结构安全重点实验室基金项目(0808)
关键词
并行计算
集群
梁板
钢筋混凝土框架
parallel computation
cluster
floor slab
frame structures
