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在9度设防区对某多塔楼围合式形成的大底盘多塔楼建筑进行隔震设计时,受建筑功能限制,不能在大底盘之上设置隔震层,而是采取在大底盘下设置,目前国内尚无先例。针对大底盘下设置隔震层遇到的特殊问题作了分析探讨,提出加强隔震层楼面刚度的措施,设定罕遇地震作用下隔震层楼板不屈服的性能目标,并进行了罕遇地震作用下围合中庭楼板破坏工况的验算,确保罕遇地震作用下隔震层不破坏。
In nine-degree fortification zone of a multi-tower enclosures formed large chassis multi-tower buildings isolated design, by the architectural features, can not be set on the large chassis isolation layer, but to take place under the large chassis, the current There is no precedent in China. Aiming at the special problems encountered in the installation of the isolation layer under the big chassis, the measures to strengthen the stiffness of the isolation floor are put forward, and the performance target of the isolation floor under the rare earthquake is set up. Under the action of earthquake, the checking of the failure condition of the enclosed atrium floor slab will ensure that the seismic isolation layer will not be destroyed under the rare earthquake.