装配式梁柱铰接钢框架屈曲约束钢板剪力墙体系抗震性能理论分析

发布时间：2018-02-09 16:19

本文关键词： 装配式梁柱铰接钢框架屈曲约束钢板剪力墙抗震性能有限元分析　出处：《山东建筑大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文在梁柱刚接钢框架屈曲约束钢板剪力墙(简称R-BRW)体系的基础上,提出了一种新型的结构体系,即装配式梁柱铰接钢框架屈曲约束钢板剪力墙(简称P-BRW)体系。该结构体系采用柱贯通、梁端铰接于柱的连接方式,无需现场施焊,符合全预制装配化的要求；在地震作用下,柱不受水平力的作用,梁柱节点不传递弯矩,可以大大减小梁柱截面尺寸；水平力由屈曲约束钢板剪力墙来承担,充分利用了屈曲约束钢板剪力墙通过自身屈服来耗散地震能量的优势。为了较全面的研究该新型结构体系的抗震性能,本文做了以下工作：1.采用简化模型来模拟钢板剪力墙,屈曲约束钢板剪力墙采用混合“4-6””模型,普通钢板剪力墙采用混合“2-8”模型,并利用ANSYS软件验证了简化模型的合理性；2.分别建立了相同梁柱截面尺寸的P-BRW结构、R-BRW结构和梁柱刚接钢框架普通钢板剪力墙(简称R-W)结构的单榀两跨10层模型,运用ANSYS软件对三种模型进行不同抗震设防烈度下的多遇地震弹性分析；选取2组天然波和1组人工波,利用SAP2000软件对三种模型进行不同抗震设防烈度不同地震波输入下的罕遇地震动力时程分析。分别得到了三种模型的楼层位移曲线、层间位移角曲线、构件出铰机制、顶点位移时程曲线以及基底剪力时程曲线等。分析结果表明：在小震下,三种结构的构件都处于弹性阶段,层间位移角沿楼层的分布都较为均匀,P-BRW结构的抗震性能不如R-W结构的抗震性能；在大震下,R-BRW和R-W结构要早于P-BRW结构在底层柱端出铰,且P-BRW结构不适宜用于地震设防烈度8度(0.2g)以上的地区；3.在上述研究的基础上,建立了一幢15层P-BRW结构整体分析模型,运用SAP2000软件对其进行不同抗震设防烈度不同地震波输入下的罕遇地震动力时程分析,研究了整体结构的抗震性能。经研究表明,该新型结构体系在合理的梁柱截面尺寸下,在8度(0.2g)及以下地震设防烈度的罕遇地震作用下,满足“大震不倒”的抗震设防要求,能够保证梁柱继续保持弹性,使梁柱能提供足够的恢复力,以实现整体结构在震后的“自复位”功能,适合钢结构建筑工业化的发展要求。
[Abstract]:In this paper, a new structure system is proposed on the basis of Liang Zhu rigid steel frame buckling restrained steel plate shear wall (R-BRW) system. The assembled Liang Zhu hinged steel frame buckling restrained steel plate shear wall (P-BRW) system. The structure system adopts the connection mode of column through, beam end hinged to column, does not need to be welded on the spot, and meets the requirements of full precast assembly. The column is not subjected to horizontal force, Liang Zhu node does not transfer bending moment, which can greatly reduce the size of Liang Zhu section, and the horizontal force is borne by buckling steel plate shear wall. This paper makes full use of the advantage of buckling restrained steel plate shear wall to dissipate seismic energy through its own yield. In order to study the seismic behavior of the new structural system comprehensively, the following work is done in this paper: 1. The simplified model is used to simulate the steel plate shear wall. The mixed "4-6" model is used for buckling restrained steel plate shear wall and the mixed "2-8" model is used for common steel plate shear wall. The rationality of the simplified model is verified by using ANSYS software. (2) the single two-span 10-story model of P-BRW structure with the same size of Liang Zhu and the common steel plate shear wall (R-W) structure with Liang Zhu rigid-jointed steel frame is established respectively. Using ANSYS software to analyze the seismic elasticity of three kinds of models under different seismic fortification intensity, two groups of natural waves and one group of artificial waves are selected. The dynamic time-history analysis of rare earthquakes with different seismic fortification intensity and seismic wave input is carried out by using SAP2000 software. The floor displacement curves, interstory displacement angle curves, and the mechanism of component hinge are obtained, respectively. The analysis results show that the members of the three kinds of structures are in the elastic stage under the small earthquake. The seismic behavior of P-BRW structure is not as good as that of R-W structure, and that of R-BRW and R-W structures is earlier than that of P-BRW structure at the bottom column under strong earthquake. Moreover, P-BRW structure is not suitable for use in areas where the seismic fortification intensity is above 8 degrees or 0.2 g. Based on the above research, a global analysis model of a 15-story P-BRW structure is established. The dynamic time-history analysis of rare earthquakes with different seismic fortification intensity and seismic wave input is carried out by using SAP2000 software, and the seismic behavior of the whole structure is studied. The results show that the new structure system is of reasonable Liang Zhu cross section size. Under the action of rare earthquakes with earthquake fortification intensity below 8 degrees or 0.2g, to meet the seismic fortification requirements of "large earthquakes will not fail", Liang Zhu will be able to maintain its flexibility and enable Liang Zhu to provide sufficient resilience. In order to realize the function of "self-reset" of the whole structure after the earthquake, it is suitable for the development of the steel structure building industrialization.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU391

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