活性粉末混凝土超高层结构抗震性能研究*
- 摘 要
-
（1 湖南大学土木工程学院，长沙 410082； 2 湖南理工学院土木建筑学院，岳阳 414006）
［摘要］为了探讨活性粉末混凝土在超高层结构中应用的可能性，以一结构高度为222.7m的超高层筒中筒结构为例，将框筒柱和剪力墙的普通混凝土替换成活性粉末混凝土，对两种结构的自重、动力特性、结构侧移、抗震性能及稳定性等进行比较与分析。结果表明：活性粉末混凝土具有较高的韧性及强度；在满足现有规范的前提下,活性粉末混凝土框筒柱和剪力墙自重分别比原结构减轻了54%和50%;活性粉末混凝土柱可替代型钢混凝土柱;活性粉末混凝土剪力墙的截面尺寸由刚度和稳定性控制；活性粉末混凝土代替普通混凝土可以减小构件截面、增加建筑的使用面积，从而减小结构的自重，降低地震作用,改善结构的抗震性能。［关键词］活性粉末混凝土; 超高层结构; 抗震性能; 稳定性中图分类号：TU973.1+7, TU973.3+1 文献标识码：A 文章编号：1002-848X(2016)03-0006-06
Study on seismic performance of super high-rise structure with reactive powder concreteTong Xiaolong1,2, Fang Zhi1(1 School of Civil Engineering, Hunan University, Changsha 410082, China; 2 School of Civil Engineering, Hunan Insititute of Science and Technology, Yueyang 414006, China)Abstract:To discuss the possibility of the applicability of reactive powder concrete (RPC) in super high-rise structure, a 222.7m super high-rise tube-in-tube structure was taken as an example. The common concrete in frame columns and shear walls was replaced by RPC and parameters of two structures were compared and analyzed including deadweight, dynamic characteristics, structural lateral displacement, seismic performance and stability. Results show that RPC has relatively high toughness and strength. Compliance with existing codes, the deadweights of RPC frame columns and shear walls are reduced by 54% and 50%. RPC columns can replace steel reinforced concrete columns. The geometry sizes of RPC shear walls are decided by stiffness and stability. Replacement of RPC for common concrete can reduce geometry size and increase the usable architecture area, which can reduce structural deadweight, decrease seismic action and improve seismic performance of the total structure.Keywords:reactive powder concrete; super high-rise structure; seismic performance; stability
*湖南省教育厅科研项目（13C373），岳阳市科技计划项目。通讯作者：方志，博士，教授，Email：fangzhi@hnu.edu.cn。
