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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

28卷

期数:

2011年04期

页码:

35-38

栏目:

出版日期:

2011-12-20

文章信息/Info

Title:

Simplified Analysis Method of Second-order Effect on Staggered Truss Structure

作者:

周期石¹,周绪红²,刘永健³,杨黎明¹

1. 中南大学 土木工程学院,湖南 长沙 410075; 2. 兰州大学 土木工程与力学学院,甘肃 兰州 730000; 3. 长安大学 公路学院,陕西 西安 710064

Author(s):

ZHOU Qi-shi¹, ZHOU Xu-hong², LIU Yong-jian³, YANG Li-ming¹

1. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China; 2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, Gansu, China; 3. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, Ch

关键词:

交错桁架结构;  压弯组合杆件;  二阶效应;  楼层侧移

Keywords:

staggered truss structure;  pressure-bend combinational strut;  second-order effect;  lateral displacement of story

分类号:

TU311.4

DOI:

-

文献标志码:

A

摘要:

基于交错桁架结构质量和刚度分布均匀的结构特点,将交错桁架结构等效为一根压弯组合杆,通过对压弯组合杆曲率与弯矩及剪力的关系分析,建立了压弯组合杆的平衡微分方程,并基于龙格-库塔法推导出了考虑二阶效应影响的侧移迭代计算公式; 采用该方法对交错桁架结构算例在考虑二阶效应和不考虑二阶效应2种情况下的楼层侧移进行了分析,并与有限元软件ANSYS的计算结果进行了对比。结果表明:提出的二阶效应计算方法具有较好的精度。

Abstract:

Based on the structural characteristics that the distribution of mass and stiffness was symmetrical in staggered truss structure, the load-carrying performance of staggered truss structure was equivalent to a pressure-bend combinational strut. Through the relationship analysis of curvatures and bending moments and shear forces of the pressure-bend combinational strut, balance differential equation of the pressure-bend combinational strut was erected. Based on Runge-Kutta method, the iteration calculation formula of lateral displacement of story was derived considering the influence of second-order effects. Authors analyzed the lateral displacements of story of staggered truss structure examples in the conditions of considering second-order effects or not, and gave a comparative analysis with finite element software ANSYS. Results show that the calculation method of second-order effect proposed in the paper has a good precision.

参考文献/References:

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[2]周绪红,莫 涛,蔡益燕,等.新型交错桁架结构体系的应用[J].钢结构,2000,15(2):16-19. ZHOU Xu-hong,MO Tao,CAI Yi-yan,et al.The Use of New Type Staggered Truss Structure[J].Steel Construction,2000,15(2):16-19.
[3]卢林枫.钢结构错列桁架体系结构分析与设计方法[D].西安:西安建筑科技大学,2003. LU Lin-feng.Staggered Truss Steel Framing Analysis and Design Method[D].Xi'an:Xi'an University of Architecture and Technology,2003.
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[5]周期石.钢结构交错桁架体系静力和动力性能分析[D].长沙:湖南大学,2005. ZHOU Qi-shi.Static and Dynamic Analysis of Staggered Truss Framing System in Steel Structure[D].Changsha:Hunan University,2005.
[6] SCALZI J B.The Staggered Truss System-structural Considerations[J].Engineering Journal,1971(10):138-143.
[7]周期石.高层钢结构交错桁架结构体系的静力性能研究[D].长沙:湖南大学,2001. ZHOU Qi-shi.Study of Static Properties on High-layer Steel Staggered Truss Structural System[D].Changsha:Hunan University,2001.
[8]LEFFLER R E.Calculation of Wind Drift in Staggered-truss Buildings[J].Engineering Journal,1983(1):1-28.
[9]李 红.数值分析[M].武汉:华中科技大学出版社,2003. LI Hong.Numerical Analysis[M].Wuhan:Huazhong University of Science and Technology Press,2003.

相似文献/References:

[1]周期石,周绪红,刘永健.交错桁架结构动力特性的简化分析方法[J].建筑科学与工程学报,2006,23(04):28.
　ZHOU Qi-shi,ZHOU Xu-hong,LIU Yong-jian.Simplified Analysis Methods of Dynamic Characteristic of Staggered Truss Structure[J].Journal of Architecture and Civil Engineering,2006,23(04):28.

备注/Memo

备注/Memo:

收稿日期:2011-11-10
基金项目:国家自然科学基金项目(50878215)
作者简介:周期石(1972-),男,湖南嘉禾人,副教授,工学博士,E-mail:qishizhou@csu.edu.cn。

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更新日期/Last Update: 2011-12-20