高烈度区高层连体结构连接支座形式的选取研究

Research on the selection of connecting support form of high-rise conjoined structure in high intensity area

连体结构,尤其是高烈度区高层连体结构连接方式的选取对塔楼及连接体的内力、位移影响较大。以某高烈度区医疗建筑为例,对连体结构两端支座形式进行了计算分析。对采用一端铰接一端滑动、一端铰接一端弹性支座及两端弹性支座的不同支座方案,进行多遇地震下弹性时程分析计算,得到了连体结构的内力、变形影响规律,计算表明,当采用两端弹性支座(摩擦摆)设计时,可一定程度上减小连接层及塔楼的层剪力及层位移角,可大幅度减小连接层钢构件的内力。同时,由于连接体两端均采用弹性支座(摩擦摆)的方案在实际工程中应用较少,对该方案进行了罕遇地震下的弹塑性时程分析,计算表明,该支座设计方案安全可行。研究的内容及结论可为类似的连体结构工程设计提供参考。

Conjoined structure,especially the choice of connection mode of high-rise conjoined structure in high intensity area has great influence on the internal force and displacement of tower and connecting body.In this paper,a medical building in a high intensity area is taken as an example to calculate and analyze the forms of supports at both ends of the connected structure.On one end with one end hinged sliding,hinged elastic support at one end and both ends of the elastic support different support scheme,elastic time history analysis under severe earthquake more,get the conjoined structure influence law of internal force and deformation,calculations suggest that when using elastic support on both ends(friction pendulum)design,to a certain extent,reduce the connection layer layer shear force and displacement Angle and the tower,The internal force of connecting layer steel member can be greatly reduced.At the same time,because the scheme of using elastic bearing(friction pendulum)at both ends of the joint is rarely used in practical engineering,the elastic-plastic time history analysis of the scheme under rare earthquake is carried out,and the calculation shows that the design scheme of the bearing is safe and feasible.The research content and conclusion of this paper can provide reference for similar engineering design of conjoined structures.