带耗能腋撑型钢混凝土梁转换结构设计方法研究

带耗能腋撑型钢混凝土梁转换结构是一种新型的转换结构，受力状态和抗震性能有别于普通的耗能减震结构，设计过程缺乏理论指导。因此，该文在建立该种新型结构简化计算模型的基础上，通过理论分析方法推导了结构各控制截面的内力计算公式，建立了一套该种结构基于“强柱弱梁”、“强剪弱弯”和“强节点弱构件”等延性设计思想的设计方法。设计实例分析证明，根据该文方法设计的带耗能腋撑转换结构，相比普通结构转换层处的刚度突变得到了缓解而且结构的延性得到了提高。该文提出的方法可为该种新型转换结构的设计提供理论依据。

PRELIMINARY STUDY ON DESIGN METHOD OF STEEL REINFORCED CONCRETE BEAM TRANSFER STRUCTURE WITH ENERGY DISSIPATION HAUNCH BRACE

A steel reinforced concrete(SRC) beam transfer structure with a supplemental energy dissipation haunch brace(EDHB) is a new kind of transfer structure whose state of internal forces and seismic performance is different from those normal energy dissipation structures,and lack of theory to guide its design process.Therefore,based on the established simplified calculation model of this kind of structure,formulas of the internal forces at the controlled cross sections are derived by the theoretical analysis method.A design method based on the ductility concept of "strong column-weak beam","strong shear-weak bending" and "strong joint-weak members" is established using the formulas.The analysis of design examples showed that,compared with a normal structure,the stiffness mutation at transfer storey can be efficiently reduced and the ductility of a structure can be improved when a SRC beam transfer structure with EDHB was designed by the presented design method.The design method presented by the paper can be the theoretical references for the design of the new type of transfer structure.