上海港温室主楼吊舱结构设计研究

Pod structure design for a "winter-garden" building of shanghai port

针对温室主楼吊舱结构,建立了基于ANSYS程序、用于静力和动力分析的三个舱室模型,着重研究了承重索的静力特性和动力时程响应、吊舱结构的振动与人体舒适度等问题。研究结果表明:承重索在各荷载工况下的内力值均小于相应索的拉断力。个别承重索发生先行断裂后将导致其余索的内力重分布,但不会引起其余索发生相继断裂的情况。承重索在罕遇地震作用下的内力值远小于相应的弹性极值,其设计强度是充分的。各舱室跨度最大楼板的振动产生的竖向加速度均在可以接受的范围内,不会对人体舒适性产生不良影响。

Aiming at pot structure of a ＂winter-garden＂ building,three pod models were established based on ANSYS program and they were used for static and dynamic analysis.The static characteristic and dynamic time-history response of load-bearing cables were studied.The vibration of the pod structure and human comfort were also considered.It was shown that internal forces in load-bearing cables are smaller than ultimate tensile values in all load cases;when a certain cable breaks,internal forces in the rest ones are redistributed;but it will not cause other cable faults in succession;internal forces in load-bearing cables under severe earthquake are much smaller than the corresponding elastic limit values,their design strength is sufficient;the vertical accelerations due to vibrations of the longest-span floors in each pod are acceptable,and they will not produce adverse effects on human comfort.