【摘要】 对高层大跨度连体结构的连体部分进行了结构选型分析,比较了空腹式、上承式、下承式和斜拉式等四种桁架布置形式的连体竖向刚度和结构竖向规则性,研究了上述四种连体结构布置形式下的构件内力分布和楼板应力,分析结果表明斜拉式桁架具备较好的竖向刚度,结构竖向规则性较优,且构件内力和楼板应力分布较为均匀.对高层连体结构的竖向地震作用进行了研究,结果表明大跨度连接体的竖向地震响应较大,在高烈度场地必须重视其对连体受力影响.更多还原

【Abstract】 The choice of structure styles of the connecting body in connected large-span high rise building was analyzed,the vertical stiffness of connecting body and vertical regularity of structure with such truss form as vierendeel truss,deck truss,through truss and oblique-pulling truss was compared,and the member force and slab stress was studied with above four truss form.It is shown that oblique-pulling truss gets greater vertical stiffness,vertical regularity of structure is more excellent,and distribution of the member force and slab stress is more uniform.The vertical earthquake excitation of connected high rise building was studied.It is shown that vertical seismic response of large span connecting body is more intense.The mechanical effect should receive more attention particularly in a highly seismic area.更多还原