某超高层建筑L形连体结构方案研究与设计
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农兴中1,伍永胜1,郁银泉2,蒋航军2,张林振2(1 广州地铁设计研究院有限公司,广州 510010; 2 中国建筑标准设计研究院,北京 100044)[摘要]高层连体结构抗扭转性能较差,尤其平面上不对称的连体结构,各塔楼之间的振动互相耦联,增大了结构的扭转效应。某高层建筑L形连体结构方案研究表明,刚性连接方案具有较好的抗侧刚度。采用基于性能的设计方法,通过在L形连接体及其下部4层混凝土剪力墙内设置钢支撑框架、增加楼板板底和顶板通长钢筋配筋量、设置水平支撑、提高两塔楼的自身抗侧刚度和承载力等多项措施,使结构的各项指标均能满足相关设计规范要求。[关键词]高层建筑; 连体结构; 超限; 刚性连接中图分类号:TU3182,TU973文献标识码:A文章编号:1002848X(2012)11007105Study and design on a high-rise building with L-type connected structureNong Xingzhong1, Wu Yongsheng1, Yu Yinquan2, Jiang Hangjun2, Zhang Linzhen2(1 Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510010, China; 2 China Institute of Building Standard Design & Research, Beijing 100044, China)Abstract: The anti-torsion capability of high-rise buildings with connected structures is low, especially when the connected structures are asymmetric in plane. Coupling vibration among towers increases the torsion effect on building structure. A research on an L-type connected structure shows that rigid connections have better lateral rigidity. Using the performance-based design method, different techniques such as setting modular steel braced frames in the L-type connected structures and four floors of concrete shear walls, increasing reinforcement ratios of the soffits and floors, setting horizontal supports, and increasing lateral rigidity and bearing capacity of the two towers, are used to make sure all the indicators can follow the design standard.Keywords: high-rise building; connected structure; over-limit; rigid connection作者简介:农兴中,一级注册结构工程师,教授级高级工程师,副院长,Email: Nongxingzhong@dtsjy.com参考文献[1] 包世华,王建东.大底盘多塔楼连体结构的振动计算和动力特性[J].建筑结构,1997,27(6):4044.[2] 汪大绥,姜文伟,包联进,等.中央电视台(CCTV)新主楼的结构设计及关键技术[J].建筑结构,2007,37(5):17.[3] 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.[4] 沈蒲生.多塔与连体高层结构设计与施工[M].北京:机械工业出版社,2009.[5] GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.[6] JGJ 3—2002 高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002.[7] 广州地铁设计研究院有限公司,中国建筑标准设计研究院. 佛山市南海区地铁金融城项目(办公酒店部分)超高层连体塔楼结构超限设计可行性论证报告[R].广州,2009.