Warren式钢管桁架抗震性能的变参数分析  

Variable Parameter Analysis of Seismic Property of Steel Tubular Truss Warren

作　　者：杨文伟[1] 王丹丹[2] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]大连理工大学建设工程学院,大连116024

出　　处：《科学技术与工程》2012年第33期9085-9090,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(50968014);宁夏自然科学基金项目(NZ12164);宁夏节水灌溉与水资源调控工程技术研究中心(旱区现代农业水资源高效利用教育部工程研究中心)项目资助

摘　　要：钢管桁架结构的研究偏向于具体工程实例的研究,没有形成比较通用的设计计算方法。为了得到影响钢管结构力学性能的关键参数,为管桁结构的概念设计提供依据。利用振型分解反应谱法,通过ANSYS有限元软件,对Warren钢管桁架在高跨比H/L、截面宽高比W/h和榀间距S等参数变化下的桁架抗震性能进行了变参数分析。通过分析得到桁架结构的高跨比H/L对Warren式钢管桁架动力响应的影响最为显著。在进行Warren式钢管桁架的设计时,建议将桁架的高跨比控制在1/28以内,截面的宽高比控制在1/2.3以内,榀间距控制在4～6.6 m之间,三个变参数在这一区间取值比较合理。分析结果对于钢管结构抗震性能的概念性设计具有参考价值。The research for steel tubular truss structure tends to specific engineering examples, there is no general design calculation method. In order to get pivotal influence parameters of steel tubular truss structure, which provides the basis for the concept design of steel tubular truss structure. Vibration mode decomposition response spectrum method, conduct variable parameters analysis of seismic property of steel tubular truss by ANSYS and the variable parameters include depth-span ratio H/L, section aspect ratio W/H, hinged spacing S are used. According to the analysis, the conclusion can be got that depth-span ratio H/L influences dynamic response of steel tubular truss more significantly. When designing steel tubular truss, depth-span ratio should be controlled in the range of 1/28, aspect ratio should be controlled in the range of less than 1/2. 3 and hinged spacing should be controlled in the range of inside of 4 m to 6.6 m, but hinged spacing should not be too big. The conclusion has reference value for concept design of seismic property of steel tube truss.

关 键 词：Warren式管桁架 抗震性能 参数分析 概念设计 

分 类 号：TU323.4[建筑科学—结构工程] TU392.3