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交错桁架体系结构性能分析
引用本文:刘红梁,刘志雄,陆钦年.交错桁架体系结构性能分析[J].哈尔滨工业大学学报,2004,36(9):1173-1176.
作者姓名:刘红梁  刘志雄  陆钦年
作者单位:1. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090
2. 黑龙江省伊春市上甘岭林业局,黑龙江,伊春,153032
基金项目:国家"十五"科技攻关项目(2002BA806B-4).
摘    要:根据结构力学和地震工程的基本理论,从受力原理上对交错桁架体系在竖向荷载、地震和风荷载作用下的受力性能进行了阐述,整个体系在各种荷载作用下以受轴力为主,边柱中的剪力一般很小,几乎没有弯矩或仅有很小的弯矩;根据交错桁架体系的受力特点,对其抗震性能进行了讨论,该体系具有良好的抗震性能,在小震作用下结构的层间位移角很小,在大震作用下结构的层间位移角也比较小;深入分析、比较了帕氏桁架、华伦氏桁架和混合型桁架的抗震性能,帕氏桁架的滞回性能很差,华伦氏桁架滞回性能很好且屈服分布均匀,混合型桁架的抗震性能非常好,并有层次分明的抗震防线感.

关 键 词:交错桁架体系  荷载  受力性能  抗震性能  层间位移角
文章编号:0367-6234(2004)09-1173-04
修稿时间:2003年7月11日

Structural performance of the staggered-truss system
LIU Hong-liang,LIU Zhi-xiong,LU Qin-nian.Structural performance of the staggered-truss system[J].Journal of Harbin Institute of Technology,2004,36(9):1173-1176.
Authors:LIU Hong-liang  LIU Zhi-xiong  LU Qin-nian
Affiliation:LIU Hong-liang~1,LIU Zhi-xiong~2,LU Qin-nian~1
Abstract:According to basic theory of structural mechanics and earthquake engineering mechanical performance of the staggered-truss system under the action of vertical load, seismic load and wind load was expounded based upon mechanical principium. The whole system mainly bears axial force under the action of all sorts of loads and there is almost neither shearing force nor moment on the side column. Based on mechanical character of the staggered-truss system, anti-seismic performance of this system was discussed. The staggered-truss system has nice anti-seismic performance with very small story drift under the action of both weak earthquake and strong earthquake. Anti-seismic performances of three kinds of trusses were analyzed and compared deeply and thoroughly, as indicated that Pratt truss has poor hysteresis property but Vierendeel truss has nice hysteresis property and has uniformly yielding distribution, and the truss integrated with Pratt truss and Vierendeel truss has good anti-seismic performance and gives us the feeling of clear arrangement line of defence.
Keywords:staggered-truss system  load  mechanical property  anti-seismic performance  story drift
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