长沙东方芙蓉广场高位连体结构设计
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樊亭,王飞,阚明(武汉和创建筑工程设计事务所有限公司,武汉430071)[摘要]长沙东方芙蓉广场的1#,2#,3#楼通过高空钢连廊连接为双塔连体结构,在风效应或地震作用下,连体结构的动力特性因连廊的存在而相互影响,使连接部位的受力变得非常复杂,连廊极易与主体结构脱离,造成人员或财产的重大损失。采用铅芯橡胶支座的弱连接连体结构形式,对铅芯橡胶支座进行了隔震支座非线性地震响应分析,对比主体结构有连体与无连体结构的动力响应。结果表明,设计中选用的铅芯橡胶支座可以满足要求。同时由于采用了隔震支座,减弱了连体结构对主体结构的影响,可对主体结构和连体部分分别进行设计,从而降低主体结构的设计难度,保证结构的安全性。[关键词]钢连廊; 隔震; 铅芯橡胶支座; 连体结构中图分类号:TU318.8 文献标识码:A 文章编号:1002-848X(2013)02-0017-05Connecting structure design on Changsha Dongfang Furong PlazaFan Ting, Wang Fei, Kan Ming(Wuhan Hechuang Architecture & Engineering Design Firm, Wuhan 430071, China)Abstract: Three towers of Changsha Dongfang Furong Plaza are connected by steel corridor. Under the action of wind or seismic effects, the dynamic characteristics of two towers would be affected by the corridor, and the force of the connecting parts becomes quite complicated. Thus, the corridor easily falls down from the main structure and causes significant losses of people and property. Therefore, as a kind of weak connections, the lead rubber bearing (LRB) was adopted in this project. The nonlinear seismic response analysis for the lead rubber bearing was studied, and the dynamic response of the main structure with the corridor was compared with that of the main structure without the corridor. The results indicate that the LRB can meet the design requirements. Due to the LRB, the effect of steel corridor on the main structure was weakened, and the main structure and the steel corridor were designed independently to decrease the design difficulty of the main structure and ensure the structure safety.Keywords: steel corridor; vibration isolation; lead rubber bearing; connecting structure参考文献[1] GB 50009—2001 建筑结构荷载规范[S]. 北京:中国建筑工业出版社,2001.[2] 徐培福,傅学怡,王翠坤,等. 复杂高层建筑结构设计[M]. 北京:中国建筑工业出版社,2005.[3] 李黎,熊世树. 叠层橡胶隔震支座动力特征实验研究[J].华中理工大学学报,1998,14(2):74-76.[4] 刘云贺,张俊发,王克成,等. 铅芯橡胶支座的非线性动力性态研究[J]. 西安交通大学学报,1999,19(12):73-77.[5] GB 206883—2006 橡胶支座 第三部分建筑隔震橡胶支座[S]. 北京:中国建筑工业出版社,2006.[6] 徐自国,肖从真,廖宇飚,等. 北京当代MOMA隔震连体结构的整体分析[C]// 第十九届全国高层建筑结构学术会议论文集.2006:300-305.[7] 徐自国,肖从真,李勇,等. 北京当代MOMA结构基于性能的抗震设计及静力弹塑性分析[J]. 土木工程学报,2008,45(3):58-64.[8] GB 50017—2003 钢结构设计规范[S]. 北京:中国计划出版社,2003.[9] GB 50011—2010 建筑抗震设计规范[S]. 北京:中国建筑工业出版社,2010.