活性粉末混凝土超高層結(jié)構(gòu)抗震性能研究*
童小龍1，2，方志1
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（1 湖南大學(xué)土木工程學(xué)院，長沙 410082； 2 湖南理工學(xué)院土木建筑學(xué)院，岳陽 414006）
［摘要］為了探討活性粉末混凝土在超高層結(jié)構(gòu)中應(yīng)用的可能性，以一結(jié)構(gòu)高度為222.7m的超高層筒中筒結(jié)構(gòu)為例，將框筒柱和剪力墻的普通混凝土替換成活性粉末混凝土，對兩種結(jié)構(gòu)的自重、動力特性、結(jié)構(gòu)側(cè)移、抗震性能及穩(wěn)定性等進(jìn)行比較與分析。結(jié)果表明：活性粉末混凝土具有較高的韌性及強度；在滿足現(xiàn)有規(guī)范的前提下,活性粉末混凝土框筒柱和剪力墻自重分別比原結(jié)構(gòu)減輕了54%和50%;活性粉末混凝土柱可替代型鋼混凝土柱;活性粉末混凝土剪力墻的截面尺寸由剛度和穩(wěn)定性控制；活性粉末混凝土代替普通混凝土可以減小構(gòu)件截面、增加建筑的使用面積，從而減小結(jié)構(gòu)的自重，降低地震作用,改善結(jié)構(gòu)的抗震性能。［關(guān)鍵詞］活性粉末混凝土; 超高層結(jié)構(gòu); 抗震性能; 穩(wěn)定性中圖分類號：TU973.1+7, TU973.3+1 文獻(xiàn)標(biāo)識碼：A 文章編號：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
*湖南省教育廳科研項目（13C373），岳陽市科技計劃項目。通訊作者：方志，博士，教授，Email：fangzhi@hnu.edu.cn。
