CAJ | 학술논문

为了获得模块化装配式斜支撑节点钢框架结构体系的受力性能和设计方法，采用有限元分析方法，考虑结构整体对核心模块新型斜支撑柱的约束作用，在结构整体中研究斜支撑柱的承载能力，通过极限承载力反推得到了斜支撑柱的计算长度系数，解决了该结构体系设计的关键问题.进行了30层结构的整体有限元分析，获得该结构体系在水平荷载超载、竖向荷载超载及二者同时超载下的极限承载力、破坏模式和机理，该体系的破坏模式符合强柱弱梁的抗震原则.研究结果表明：该结构体系侧向刚度较大，但延性较差，在水平和竖向荷载作用下极限承载力系数取2.0较合理，承载力具有足够的安全储备.
위료획득모괴화장배식사지탱절점강광가결구체계적수력성능화설계방법，채용유한원분석방법，고필결구정체대핵심모괴신형사지탱주적약속작용，재결구정체중연구사지탱주적승재능력，통과겁한승재력반추득도료사지탱주적계산장도계수，해결료해결구체계설계적관건문제.진행료30층결구적정체유한원분석，획득해결구체계재수평하재초재、수향하재초재급이자동시초재하적겁한승재력、파배모식화궤리，해체계적파배모식부합강주약량적항진원칙.연구결과표명：해결구체계측향강도교대，단연성교차，재수평화수향하재작용하겁한승재력계수취2.0교합리，승재력구유족구적안전저비.
To get the load-bearing behaviors and design methods of a modularized prefabricated steel structure with lean-brace joints, the finite element analysis method was adopted, the restraints effect of the whole structure of the lean-brace column was considered, the load-bearing capacity of lean-brace column was studied in the integral structure, the calculated length coefficient of the column was conversely derived by the ultimate load-bearing capacity, which solved the key problem in design of the structure system. The integral finite element analysis of a 30-layer structure was performed, the load-bearing capacity, the failure mode and failure mechanism of the new-type structure under overload horizontal load, overload vertical load and overload were obtained. The failure mode of the system was in accordance with the seismic principle of “strong column weak beam”. Analysis shows that the structure has better lateral stiffness, but poorer ductility. It is reasonable to control the ultimate load-bearing capacity coefficient to 2. 0 under horizontal load and vertical load, which has enough safety margin.