论文部分内容阅读
按照现行规范设计了一栋6层钢筋混凝土框架结构,并对其楼梯间布置位置选用了6种方案,通过对其进行静力弹塑性分析,研究楼梯间位置对框架结构的振型、内力及破坏机制的影响。分析表明:楼梯间的位置对主体结构刚度及内力分布影响较大,在建筑与结构设计时,应考虑楼梯间位置所带来的不利影响;对于普通钢筋混凝土框架结构,其楼梯间应尽量布置在结构平面的外围,以减小整体结构的扭转效应,但楼梯间不宜布置在结构最边跨,而应布置在边跨的内一跨;对靠近结构中部的楼梯间,结构设计时应考虑由其带来的扭转效应,而对布置在靠近结构周边的楼梯间,则应考虑与楼梯间相连的结构构件内力增大的影响。
According to the current standard, a six-story reinforced concrete frame structure is designed and six kinds of schemes are selected for its stairwell layout. Through the static elasto-plastic analysis, the research on the vibration mode, Impact of damage mechanisms. The analysis shows that the position of staircases has a great influence on the stiffness and internal force distribution of the main structure. In the design of buildings and structures, the adverse effects of the positions of staircases should be considered. For ordinary reinforced concrete frame structures, the staircases should be arranged as far as possible In the periphery of the structure plane, in order to reduce the torsional effect of the overall structure, the stairwell should not be arranged at the most lateral span of the structure, but should be arranged at the inner span of the side span. For the stairwell near the middle of the structure, the structural design should be considered The twisting effect caused by it, and for the stairwell arranged near the periphery of the structure, the influence of the increase of the internal force of the structural member connected with the stairway should be considered.