建筑结构

2012, v.42(S1) 736-741

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型钢混凝土柱在框支剪力墙结构中的应用研究
Study on the application of SRC columns in frame-supported shear wall structure

马福;闫园;秦奇峰;
Ma Fu;Yan Yuan;Qin Qifeng;Institute of Architecture and Civil Engineering of Taiyuan University of Technology;

摘要(Abstract):

利用通用有限元分析软件ANSYS分别对型钢混凝土柱框支满跨不开洞剪力墙结构和钢筋混凝土柱框支满跨不开洞剪力墙结构进行竖向荷载以及竖向和水平荷载共同作用下的静力分析;对不同含钢量和配箍率的型钢混凝土柱进行分析。研究结果表明:在框支柱中内设型钢可以减小整个结构特别是框支梁在竖向荷载作用下的竖向位移,框支梁底部跨中部位表现最为明显;在框支柱中内设型钢降低了框支梁中和轴的位置,提高了框支梁的抗裂能力。在竖向和水平荷载共同作用下,框支梁梁顶与剪力墙相交部分水平应力较大,远离水平力施加位置的柱底部竖向应力较大,梁柱节点内侧剪应力较大;型钢混凝土柱最大水平应力出现在远离水平力施加位置的柱顶以下大概三分之一柱高的位置;型钢混凝土柱最大竖向应力出现在远离水平力的外侧柱底处;使用型钢混凝土框支柱可以使结构的力-位移曲线存在可观的平台,提高了结构的延性。在一定范围内,型钢混凝土柱的延性随含钢量的增加、配箍率的增大而增大,但含钢量并不是越大越好。
The frame-supported shear wall structure using SRC columns and that using RC columns under vertical load and both vertical & horizon load were analyzed by ANSYS,a universal finite element analysis software.The influences of the steel contents and the ratio of stirrup to the performance of SRC columns were analyzed.The main conclusions as following;Using SRC columns can reduce the vertical displacement of the whole structure especially the frame-supporting beam under vertical load and the middle bottom of the beam makes the most obvious performance;Using SRC columns can reduce the depth of neutral axis in frame-supporting beam and improve its crack resistance;Under both the vertical and horizon load,the maximum horizontal stress appears in the intersecting part between the frame-supporting beam and shear wall,the maximum vertical stress appears at the bottom of the column that away from the horizontal force,the maximum shear stess appears in the inside of beam-column joints;The maximum horizontal stress of the SRC column appears about in the position of under the tops of the column 1/3 height of it;The maximum vertical stress appears at the bottom of the column that away from the horizontal force;Using SRC columns can make the force-displacement curve of the structure appear a considerable platform.It shows that the structure using SRC column has a better ductility than that using RC column;The ductility of SRC columns will increase significantly with the enlargement of steel contains and the ratio of stirrup within a certain range.Whereas,the steel contains in the element are not the more the better.

关键词(KeyWords): 型钢混凝土;钢筋混凝土;框支柱;有限元;延性
steel reinforced concrete;reinforced concrete;frame-supporting column;finite element;ductility

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 马福;闫园;秦奇峰;
Ma Fu;Yan Yuan;Qin Qifeng;Institute of Architecture and Civil Engineering of Taiyuan University of Technology;

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DOI: 10.19701/j.jzjg.2012.s1.182

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