竖向加劲钢板剪力墙的关键力学性能及协同作用机制研究

Based on the engineering practice of steel structure housing industrialization , the advantages and disadvantages of the performance of steel plate shear wall among the existing forms were analyzed, and then a new structural form—vertically stiffened steel plate shear walls with two-side constraints was proposed. It was connected to beams, so direct forcearose from tension field to columns can be avoided.At the same time,it is convenient to be used in steel-structure house. Besides, vertical stiffeners can also restrict it’s out-plane deformation and premature buckling under lateral loads. The project adopts theoretical research, numerical simulation and experimental research methods. The research objects include single piece of steel plate without beams and columns, single piece of steel plate with border and framework - steel wall. Researches will be carried out on get their mechanical properties and bearing mechanism. So it is necessary to do some regression analysis to acquire corresponding data. Based on these work,the function expressions of the mechanical properties and hysteretic model’s parameter will be concluded. The study of synergistic effect mechanism between steel wall and steel framework is another contents. Moreover，the project will not only put forward a simple and effective finite element analysis method to determine the mechanical properties of the steel plate wall but also propose a simplified equivalent model for analysis and design. The finally goal are to promote the use of this kind of steel plate and develop steel housing industrial and green building.

结合钢结构住宅产业化工程实际情况,综合比较现有形式钢板剪力墙各项性能的优点和不足之处，本项目提出一种新的结构形式—两边连接竖向加劲式钢板剪力墙。该结构形式避免了钢板墙拉力带直接将荷载传递到框架柱所引起的不利影响，能够满足住宅钢结构对于抗侧钢板墙上开设门窗洞口的要求，同时竖向加劲肋可以起到限制钢板墙在侧向荷载作用下平面外变形和过早屈曲。本项目采用理论研究、数值模拟以及试验分析研究等方式，对带梁柱边框、不带梁柱边框以及框架-钢板墙的破坏机理和关键力学性能指标进行研究，并通过回归分析对大量参数化分析后得到的数据进行拟合，得到关键力学性能指标的函数表达式和简化后的滞回模型力学参数表达式。对这种新型钢板剪力墙与钢框架协同作用机制进行理论分析和试验研究，给出一种简便有效的确定钢板剪力墙力学性能的有限元分析方法和简化的等代模型设计方法，从而对推动我国住宅产业化和绿色建筑的发展具有很重要的现实意义。

随着我国城镇化水平的不断提高，持续增长的住房、学校、医院、工业、商业等建筑的需求，尤其是高层钢结构住宅的快速发展，促进了钢结构体系的应用研究，一些新型结构体系得到了开发和应用。钢结构住宅标准化、产业化的发展目标也催生了新型的抗侧力构件和抗侧力结构。钢板剪力墙具有良好的延性、稳定的滞回特性以及与钢构件之间较好的连接性能，屈曲后仍具备较大的弹性侧向刚度和抗剪承载力，非常适合应用于地震高烈度区的钢结构建筑中。因此本项目提出了一种新的结构形式—两边连接竖向加劲式钢板剪力墙。该结构形式避免了钢板墙拉力带直接将荷载传递到框架柱所引起的不利影响，能够满足住宅钢结构对于抗侧钢板墙上开设门窗洞口的要求，同时竖向加劲肋可以起到限制钢板墙在侧向荷载作用下平面外变形和过早屈曲。本项目采用理论分析研究、数值模拟以及试验分析研究等方式，对带梁柱边框、不带梁柱边框以及框架-钢板墙的破坏机理和关键力学性能指标进行了研究，并通过回归分析对大量参数化分析后得到的数据进行拟合，得到了关键力学性能指标的函数表达式和简化后的滞回模型力学参数表达式。对这种新型钢板剪力墙与钢框架协同作用机制进行理论分析和试验研究，给出了一种简便有效的确定钢板剪力墙力学性能的有限元分析方法和简化的设计方法，从而对推动我国住宅钢结构产业化和绿色建筑的发展具有很重要的现实意义。