方钢管混凝土框架—竖向槽钢加劲薄钢板剪力墙的力学性能研究

发布时间：2018-05-30 23:17

本文选题：方钢管混凝土框架 + 槽钢加劲薄钢板剪力墙　；参考：《西安建筑科技大学》2014年硕士论文

【摘要】：钢板剪力墙是一种经济有效的水平抗侧力构件，与传统的钢筋混凝土剪力墙相比，具有自重轻、基础尺寸和地震作用小、施工速度快、增加使用空间等优点，在多、高层建筑中得到越来越广泛的应用。在钢板剪力墙上设置竖向槽钢加劲肋可以提高临界屈曲压应力，同时能提高水平荷载作用下的临界屈曲剪应力，限制水平荷载作用下钢板墙的面外变形，还能提供比较大的扭转约束。本文通过设计2个缩尺比为1:3的两层单跨方钢管混凝土框架-薄钢板墙模型，在单向加载和往复荷载下采用非线性有限元软件ABAQUS6.11对其进行分析，研究了其受力机理、破坏机制、极限承载力、刚度、延性、滞回性能以及耗能能力；文中设计大量的单层单跨钢板墙模型，通过改变加劲肋尺寸、加劲肋数目、加劲肋布置方式以及肋板刚度比等参数对槽钢加劲钢板墙进行了参数化分析。结果表明：与非加劲钢板墙相比，槽钢加劲薄钢板剪力墙其抗侧性能和抗震性能具有明显优势；钢板墙的屈曲荷载与加劲肋宽厚比呈现出线性关系；单面加劲和交错加劲钢板墙选择肋板刚度比值为20，加劲数目为6（方板）时最佳；双面加劲钢板墙选择肋板刚度比值为30，加劲数目为6（方板）时最佳；单面加劲和交错加劲抗侧性能相近，，而与双面加劲相差较大。
[Abstract]:Steel plate shear wall is an economical and effective horizontal anti-lateral force member. Compared with the traditional reinforced concrete shear wall, it has the advantages of light weight, small foundation size and seismic action, fast construction speed, and increasing space for use. High-rise buildings are more and more widely used. Setting vertical channel stiffener on the shear wall of steel plate can increase the critical buckling compressive stress, increase the critical buckling shear stress under horizontal load, and limit the out-of-plane deformation of steel plate wall under horizontal load. It can also provide relatively large torsion constraints. In this paper, two two-story single-span concrete-filled steel tube frame-thin steel plate wall models with 1:3 scale ratio are designed. The nonlinear finite element software ABAQUS6.11 is used to analyze the model under unidirectional and reciprocating loads, and the mechanical mechanism and failure mechanism of the model are studied. Ultimate bearing capacity, stiffness, ductility, hysteretic performance and energy dissipation capacity. The stiffened steel plate wall is parameterized by parameters such as stiffening rib arrangement and stiffening slab stiffness ratio. The results show that, compared with the non-stiffened steel plate wall, the channel stiffened thin steel plate shear wall has obvious advantages of lateral and seismic performance, and the buckling load of the steel plate wall has a linear relationship with the ratio of stiffened rib width to thickness. The best ratio of stiffening and staggered stiffening steel plate wall is 20, the stiffening number is 6 (square plate), the stiffness ratio of stiffened steel plate is 30, and the stiffening number is 6 (square plate). The side resistance performance of single side stiffening and staggered stiffening is similar to that of double side stiffening.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398

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