某低位连体结构中连廊对塔楼的影响分析

Analysis on the influence of joint gallery in low connected structure to main towers

为了探究低位连体结构的连廊对塔楼刚度、周期、振型、扭转等动力特性的影响以及罕遇地震下整体结构的损伤、连体部位的楼板应力情况,对某工程在多遇地震及罕遇地震下的响应进行了研究。计算结果表明:采用刚性连接的连接体具备足够的刚度时,连接体能够有效地协调塔楼的侧向变形,增加结构整体刚度;在罕遇地震下,连接体所在层的相邻上下层的损伤较其他楼层要大,需对其相应加强,虽然低位连体的楼板应力相对较小,但仍需对连接体所在层及其相邻上下层的梁和楼板进行构造上的加强,以保证连接体的水平力得到有效传递。

In order to study the effects of joint gallery in low connected structure on main towers,including stiffness,period of tower,vibration mode,torsion and other dynamic properties,as well as the damage of whole structure and slab stress of joint gallery under rare earthquake,the analyses of a project were carried out under frequent earthquake and rare earthquake. The results show that if the stiffness of joint gallery（ rigid coupling） is enough,the lateral deformation of main tower can be effectively coordinated and the stiffness of whole structure can be enhanced. In the case of rare earthquake,the damage of the upper and lower floors which neighbor the joint gallery connection floor is more serious that need correspondingly reinforced; though the slab stress of joint gallery in low connected structure is small,some construction measures should be used in the slabs and beams of the joint gallery connection floor and its neighboring upper and lower floors to ensure the horizontal stress of joint gallery transferred effectively.