【作者】 郝智海；

【导师】 李亚娥；

【作者基本信息】 兰州理工大学 ， 结构工程， 2012， 硕士

【摘要】 本文研究一种新型的结构“钢管混凝土排柱剪力墙”，即将混凝土填充于钢管内，再将钢管混凝土柱均匀排布到混凝土墙里，与混凝土墙体组合为一体。这种结构已经在广东博物馆新馆结构中应用，但国内对它的研究还鲜见文献。本文回顾了国内钢-混凝土混合结构在高层中的应用，总结了钢管剪力墙的研究现状。利用ABAQUS软件对钢管混凝土排柱剪力墙进行了有限元数值模拟计算，考虑轴压比，混凝土强度等级，高宽比对钢管混凝土排柱剪力墙受力性能的影响，并一一与普通钢筋混凝土剪力墙作比较。分析了各工况条件下钢管混凝土排柱剪力墙与普通混凝土剪力墙在单调荷载作用下的荷载-位移曲线，在循环荷载作用下的滞回性能。研究结果表明：在相同的含钢率下，钢管混凝土排柱剪力墙的承载能力比普通钢筋混凝土剪力墙大的多。轴压比对钢管混凝土排柱剪力墙的极限承载力影响不明显，随着轴压比的增大，延性先增大后降低。随着混凝土强度等级在一定范围内的提高，组合墙体的承载力提高。高宽比的减小，可以极大的提高宽比为2.0体的稳定性，进而提高其承载力。普通钢筋混凝土墙体一般从角部迅速破坏，钢管混凝土排柱剪力墙的破坏始于非约束区墙体,因此建议实际施工中应加强非约束区受力钢筋的作用。钢管混凝土排柱剪力墙的耗能能力大于钢筋混凝土剪力墙的耗能能力。由于混凝土是脆性材料，混凝土总是先于钢管屈服前破坏，虽然钢管不能充分的发挥其应有的作用，但是混凝土破碎后，依旧可以由钢管承担压力与水平作用力，有力的延缓了结构整体破坏的时间，所以应加强钢筋对混凝土的约束作用。更多还原

【Abstract】 A new structure is proposed, concrete-filled steel tube shear wall. With theconcrete filling in tubes, concrete filled steel tube columns are even arranged in theshear wall. The application is obvious in the Guangdong province museum. But theresearch is very little.It is introduced about the composite shear walls in High-Rise Building andanalyzed the existing related research. Grounded on the theoretical analysis, we makeuse of ABAQUS to conduct the finite element analysis of the concrete-filled steel tubeshear wall. For considering the behavior influence of the concrete-filled steel tubeshear wall by becoming type of axial load ratio、concrete grades, the ratio of height tothickNess，it is compared with the reinforced concrete shear wall. It is analyzed thatthe Curves of Reaction Force and Displacement under the uniaxial compress, theHysteresis Curves of the composite structure under cyclic loading with different loadsconditions.The main conclusions are：with the increase of the axial compression ratio，theultimate load of the composite wall has little influence; while the ductility increases atfirst then decreases within a certain range. With increasing of the concrete grades,there are significant effects on bearing capacity. With the decreasing of the ratio ofheight to thickNess, the shear wall is more stable. And the capacity is large, too. Dueto the damage behavior, it is destroyed from the corner of the reinforced concrete shearwall, while the damage of the concrete-filled steel tube shear wall stars from the notrestraint. Therefore we advise that it is a must to strengthen the main reinforcement inthe not restraint. Energy dissipation capacity of the concrete-filled steel tube shearwall is more superior than the reinforced concrete shear wall.Because concrete isbrittle material, concrete is always yield before the destruction of the steel tube,although the tube can not play its due role fully. Otherwise the steel tube can still beundertaken the upper pressure and horizontal forces when the concrete is crushing.Dueto this property, it is delayed the overall damage to structure. In consequence, it shouldbe to strengthen reinforced concrete constraints.更多还原