(中国建筑科学研究院建筑安全与环境国家重点实验室， 北京 100013)

［摘要］结合风洞同步测压试验，利用高效的广义坐标合成法分析了某连体高层空中连廊的风振特性。采用塔楼连廊的整体结构模型进行计算，可充分考虑塔楼运动对连廊的影响。计算结果表明，连廊的运动主要是由于塔楼主体运动引起的，连廊自身风压对其风致响应的贡献极小；两座塔楼的相对运动与横梁的轴力有很强的相关性，是造成横梁受拉压的主要因素。分析表明，不管连廊与主体之间采用何种连接方式，都不宜将空中连廊作为独立结构计算其风振特性。采用的整体分析方法对于分析连体高层主体及连廊的风致振动具有普遍的适用性。

［关键词］空中连廊； 风洞试验； 风致振动； 同步测压； 广义坐标合成法

中图分类号：TU311.3，TU973.2+13       文献标识码：A      文章编号：1002-848X(2015)02-0057-06

Windinduced vibration analysis method of the skybrige in connected tall buildings

Chen Kai, Fu Longbiao, He Lianhua, Xiao Congzhen

（State Key Laboratory for Building Safety and Environment, China Academy of

Building Research, Beijing 100013, China）

Abstract:On the basis of wind pressure data obtained from the wind tunnel test, the windinduced vibration characteristics of the skybrige in connected tall buildings were investigated by the highefficiency generalized coordinates synthesis method. The whole structural model composed of the skybridge and main towers was employed to take  the effect of the tower movement on the skybridge into account. The results show that the movement of the skybridge is primarily induced by the tower vibration and the wind pressure on the skybridge has little effect on its own windinduced vibration. The axial forces in the main beams of the skybridge present strong correlation with the towers′ movement, and the relative movement of the two towers is the major cause of the axial forces in the  main beams of skybridge. The comparison results demonstrate that the skybridge should not be regarded as an independent structure in windinduced response analysis no matter which connection way is adopted. The analysis method with the whole structural model  can be applied to  the analysis on wind\|induced vibration of connected tall buildings and relevant skybridge.

Keywords:skybridge; wind tunnel test; windinduced vibration; synchronous pressure measurement; generalized coordinates synthesis method

*国家科技支撑计划项目（2012BAJ07B01）。

作者简介：陈凯，博士，研究员，Email: chenkai@cabrtech.com。

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