合肥新桥机场航站楼大型箱形钢柱的拟静力试验  

PSEUDO-STATIC EXPERIMENT OF STEEL BOX COLUMNS IN HEFEI XINQIAO AIRPORT TERMINAL

作　　者：李海锋[1] 罗永峰[2] 李德章[3] 丁大益[4] 

机构地区：[1]华侨大学土木工程学院,厦门361021 [2]同济大学建筑工程系,上海200092 [3]合肥市重点工程建设管理局,合肥230001 [4]五洲工程设计研究院,北京100053

出　　处：《工程力学》2013年第8期163-171,共9页Engineering Mechanics

基　　金：安徽省重点建设工程基金项目(20100527);华侨大学科研基金项目(12BS209)

摘　　要：通过8根箱形钢柱在偏心常轴压、柱顶反复水平荷载作用下的拟静力试验,研究地震作用下合肥新桥机场航站楼大型箱形钢柱的壁板稳定性及其抗震性能。试验结果表明:在小震作用下,合肥新桥机场航站楼箱形钢柱处于弹性受力状态,且壁板稳定;在大震作用下,箱形钢柱壁板基本处于弹塑性受力状态,出现塑性变形,但壁板仍然满足稳定性要求。腹板宽厚比是影响构件抗震性能的重要因素,腹板宽厚比越大,滞回曲线越不饱满,试件的承载力及刚度退化越严重。最后,提出大跨度空间结构箱形钢构件的加工制作构造措施及抗震设计建议。Pseudo-static experiments on the seismic behavior of 8 eccentrically constant-compressed steel box columns under cyclic lateral loading are conducted. The local stability and the seismic behavior of steel box columns in Hefei Xinqiao Airport Terminal under the action of an earthquake are investigated. Experimental results show that the steel box columns in Hefei Xinqiao Airport Terminal under the action of a frequent earthquake are in an elastic state, and the plate is steady. While the columns under the action of a rare earthquake are in an elastoplastic state, and the plastic deformation is found. The local stability of columns under the action of the rare earthquake is satisfied code demands. It is also found that the width-to-thickness ratio of a web plate has an obvious effect on the seismic behavior of the steel box columns. When the width-to-thickness ratio of the web plate increases, the area of the hysteresis loops tends to descend, and the load-bearing capacity and stiffness of the steel column degenerate severely. Finally, details of fabrication and suggestions of the aseismic design for steel box columns in large span structures are proposed.

关 键 词：大跨度钢结构 箱形钢柱 拟静力试验 抗震性能 腹板宽厚比 

分 类 号：TU391[建筑科学—结构工程]