防连续倒塌高大模板支撑体系的两阶段设计研究

安宇骢; 谢楠; 贾影

doi:10.6052/j.issn.1000-4750.2016.03.S058

防连续倒塌高大模板支撑体系的两阶段设计研究

北京交通大学土木建筑工程学院, 北京 100044

基金项目: 国家自然科学基金项目（51578050）

详细信息

作者简介:
安宇骢(1990―),男,河北人,硕士生,从事结构可靠性分析研究(E-mail:andy23129@163.com);贾影(1963―),女,辽宁人,教授,博士,从事力学分析研究(E-mail:jiaying1963@sina.com).

通讯作者:
谢楠(1965―),女,湖南人,教授,博士,博导,从事结构设计和可靠度理论研究(E-mail:nxie@bjtu.edu.cn).

中图分类号: TU755.2
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出版历程
- 收稿日期: 2016-03-29
- 修回日期: 2016-12-19
- 刊出日期: 2017-06-24

RESEARCH ON TWO-STAGE DESIGN OF HIGH FALSEWORK SYSTEM against PROGRESSIVE COLLAPSE

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

摘要

摘要: 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。
- 高大模板支撑体系 /
- 两阶段设计 /
- 连续倒塌 /
- 目标可靠指标 /
- 极限承载力
Abstract: A high falsework system which is intended to prevent progressive collapse is proposed. It is composed of a single-function subsystem and a dual-function subsystem. The two subsystems work together under normal design situation (first stage). Once the single-function subsystem fails accidentally, the dual-function subsystem can work alone to avoid progressive collapse of the whole system (second stage). Considering the differences of the two stages in the settlement, load and function, the target reliability indexes of the two-stage design are discussed and proposed. Reasonable constructional measures and types of shores are obtained considering both the ultimate capacities and the amount of material. The system not only satisfies the requirement of structural safety in normal design situation, but also provides opportunities for workers to escape and rescue channels for lifesaving when accidents happen.
- high falsework /
- two-stage design /
- progressive collapse /
- target reliability index /
- ultimate capacity

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参考文献(11)

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