地震波种类变化对单层柱面网壳等效模型模拟精度的影响研究  

Study on the effect of different earthquake wave on simulation precision of simplified single-layer cylindrical reticulated shell model

作　　者：王宁 徐建新 薛素铎[3] 陈海彬 闫文赏 WANG Ning XU Jianxin XUE Suduo CHEN Haibin YAN Wenshang(College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063009, China Earthquake Engineering Research Center of Hebei Province, Tangshan 063009, China Key Lab of Urban Security and Disaster Engineering, MOE, Beijing University of Technology, Beijing 100124, China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063009 [2]河北省地震工程研究中心,河北唐山063009 [3]北京工业大学建筑工程学院,北京100124

出　　处：《世界地震工程》2016年第4期171-177,共7页World Earthquake Engineering

基　　金：国家自然科学基金重大研究计划项目(90715034);国家自然科学基金(51478162);唐山市科技计划项目(14130207a);华北理工大学博士基金(25401199)

摘　　要：单层柱面网壳精细化有限元模型虽有较好的模拟精度,因为其建模复杂而且计算费时,所以难于应用到工程实际中进行模拟分析。为了平衡计算精度和计算量,需要对精细化模型进行等效简化研究。前期研究得到了1种较好的简化建模方法,在此基础上研究地震波种类变化对等效模型模拟精度的影响。共建立了1组4个单层柱面网壳模型,所有模型分为两类,即:2个精细化壳单元模型和2个等效梁单元模型。由于地震波种类不同会使模型失效的临界加速度值不同。因此,动力分析时选用接近结构失稳临界值的加速度。模拟结果显示:随着地震波种类的改变,简化模型的等效效果都较好。等效简化模型的精度受地震波种类的影响较小,可以忽略不计。The single-layer cylindrical reticulated shell fine finite element model has better precision in simulating, but it is complicated and wasts time to build model and calculate when it is used in the simulation. Therefore, it＇ s hard to be applied in the real project calculation. In order to balance the requirement of simplification and precision in the simulation, the equivalent simplified model for the fine model is studied. The former study has already investigated a new method which could build an effective equivalent model. In order to study the effects of different types of earthquake wave on the simulation precision, a set of models are built. The group contains 4 models, which are divided in two types ： 2 of all are fine shell element models and 2 oters are equivalent beam element models. Because the critical acceleration value for each model is different as the type of earthquake wave changes, the value near the critical acceleration is chosen in the dynamic analysis. The simulation result shows that as the type of earthquake wave changes, the equivalent simplified model profonns precisely. The type of earthquake wave has little interference on simulation precision of the equivalent model. Therefore, it can be ignored.

关 键 词：单层柱面网壳 有限元分析 等效模型 地震波 

分 类 号：TU393.3[建筑科学—结构工程]