装配式不对称混合连接框架结构设计方法研究

Study of the Design Method of Assembled Unsymmetrical Hybrid Connection Frame Structure

结合我国抗震设计规范的性能化设计理论,建立了基于迭代变形的不对称混合连接框架抗震设计方法。初步结构设计主要环节有梁柱连接截面的抗弯和抗剪设计、预制构件的设计及梁柱节点核心区的抗剪设计。结构在大震下的变形验算采用DRAIN-2DX程序建模进行Pushover分析,并判定结构的抗震性能,给出一个不对称混合连接框架设计实例的抗震设计详细过程,设计的框架实际抗震性能达到了"大震可修"的水准。必要的构造设计保证了梁端截面的延性和柱端截面的转动能力。

Combining with performance-based theory of Chinese seismic design code, deformation- calculation based on seismic design method of the unsymmetrical hybrid frame was built. Primary structure design includes the design of moment resistance and shear resistance of the connected section between beams and columns, and precast members design, and shear-resistance design of joint area. The program DRAIN-2DX was used to build the model of the frame and run the Pushover analysis to check the deformation under major earthquake of the structure, so the seismic performance could be judged. The detailed design course of an unsymmetrical hybrid connection frame was brought out. The accrual seismic performance of the designed frame reached the level ＂repairable under major earthquake＂. The necessary details design provided the ductility of the beam and rotation ability of the column.