某大型混合结构中关键构件的力学行为研究  

Mechanical Behavior Analysis of the Important Members in One Large Hybrid Structure

作　　者：岳健广[1] 钱江[2] 镇东 李涛 

机构地区：[1]南京工业大学土木工程学院,南京211800 [2]同济大学土木工程防灾国家重点实验室,上海200092 [3]陕西恒瑞建筑设计工程有限公司,西安710004

出　　处：《防灾减灾工程学报》2015年第5期630-636,共7页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51308286);江苏省自然科学基金项目(BK20130944)资助

摘　　要：大型结构中关键构件的力学性能对整体结构的安全性影响重大,但其受力状态复杂,目前的试验条件尚难准确模拟复杂构件的边界条件。鉴于整体有限元模型可以近似模拟结构中构件真实的受力状态,利用单元耦合技术,提出了整体结构中关键构件的模拟计算方法,对某大空间竖向混合结构中的关键构件进行了精细模拟,通过整体计算分析了该结构中Y型混合柱、屋盖下弦节点在复杂受力状态下的力学行为,并以模型试验结果和一般数值计算方法验证了该方法的准确性。提出的方法可为复杂构件力学性能的研究提供参考。Some key members of a large structure have great impact on the structural behavior.However it always is in a complicated loading state,so the experimental technique cannot realize this loading state now.For the structural finite element model could supple approximately the true loading states of the members,a new simulation technique for the complex member is proposed in this paper on the basis of the element coupling technique.In this paper,some key members in a large structure are simulated in micro-scale.Through the structure global computation,the mechanical behavior of Y-type hybrid column and lower chord joint are analyzed.The validity of this method is verified by the comparison with the test and a general finite element model.It shows the proposed method could be used for the mechanical behavior analysis of complex members.

关 键 词：关键构件 复杂受力状态 单元耦合模型 

分 类 号：TU375[建筑科学—结构工程]