RC框架-框桁式复合墙混合抗侧力体系抗震性能研究

项目名称： RC框架-框桁式复合墙混合抗侧力体系抗震性能研究

项目编号： No.51508463

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 建筑科学

项目作者： 李晓蕾

作者单位： 西安理工大学

项目金额： 20万元

中文摘要： 以内嵌钢骨混凝土桁式杆件与钢筋混凝土外边框组成框格单元，框格单元拼装后形成新型可装配式框桁式复合墙，拼接缝具有耗能作用，并可与RC框架协同受力形成混合抗侧力体系。建立框格单元的平面理论计算模型与数值分析模型，研究框格单元的构造特点及相关参数对其受力性能与破坏机制的影响规律，实现框格单元参数优化，并结合框格单元拟静力试验，建立其承载力和变形计算方法；通过框桁式复合墙拟静力试验及数值模拟，研究该墙体在加载过程中的承载力、刚度、位移延性、耗能等变化规律，阐明框桁式复合墙体荷载破坏机制与耗能机理，揭示其破坏过程的基本力学规律；进行RC框架-框桁式复合墙拟静力试验，结合试验结果进行该混合抗侧力体系破坏机制分析，并与数值模拟及理论计算结果对比，揭示其在水平荷载作用下协同工作的基本规律。通过研究，建立RC框架-框桁式复合墙力学计算模型，提出该新型结构体系的抗震设计方法，为工程结构抗震提供新的途径与思路。

中文关键词： 框桁式复合墙；协同工作；抗震性能

英文摘要： Combine reinforced concrete truss type bar with reinforced concrete outer frame, the fundamental frame unit is proposed. The new assembly frame truss composite wall is put forward through splice the fundamental frame unit ,with energy dissipation effect of the seam between the unit. Through embed the frame-truss composite wall into RC frame, the hybrid lateral force resisting system is proposed.The theoretical calculation and numerical simulation model of fun damental frame unit is established, the influence law of characteristics and related parameters on the mechanical properties and failure mechanism for fundamental frame unit is studied, the parameters optimization is carried out , combined the pseudo-static test result, calculation method of loading bearing capacity and deformation is established. Based on pseudo-static test and numerical simulation, loading bearing capacity, stiffness, displacement ductility, energy dissipation are studied, failure and energy dissipation mechanism is illustrated . The failure mechanism is analyzed through the pseudo-static test result, and compared with numerical simulation and theoretical calculation result, the law of cooperative work is revealed. Through the research, mechanical calculation model of RC frame- frame truss composite wall is established, while the seismic design method of this new type of structure system is put forward, that provide a new way for earthquake resistance of engineering structures.

英文关键词： frame-truss composite wall;cooperative working;seismic behavior