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提出了一种防连续倒塌高大模板支撑体系,由双功能子体系和单一功能子体系组成,正常设计状况下两个子体系共同工作(简称第一阶段);偶然情况下单一功能子体系先失效,双功能子体系独自工作,避免整个结构体系连续倒塌(简称第二阶段)。在两个阶段,考虑支撑体系在结构布置、荷载和功能等方面的差异,研究和讨论了两阶段设计目标可靠指标的合理取值。从承载能力和用钢量的角度,给出合理的构造措施和最优的立杆型号,不但保证正常设计状况下结构的安全性,而且在事故发生时给施工人员提供逃生机会,为救援提供通道。
A kind of high-temporo-template supporting system is proposed, which consists of a bifunctional subsystem and a single functional subsystem. Under normal design conditions, the two subsystems work together (referred to as the first stage). In case of accident, the single functional subsystem fails first, Bifunctional subsystems work alone, to avoid the continuous collapse of the entire structural system (referred to as the second phase). In two stages, considering the differences of the support system in terms of structure arrangement, load and function, the reasonable value of the reliable target of the two-stage design goals is studied and discussed. From the perspectives of bearing capacity and steel consumption, reasonable construction measures and optimal pole models are given, which not only ensure the safety of structures under normal design conditions but also provide construction workers with escape opportunities in the event of an accident and provide rescue services aisle.