扣件式高大模板支架的概率极限状态设计法研究

谢楠; 付小辉; 王立峰; 胡杭; 武桐

doi:10.6052/j.issn.1000-4750.2015.12.0979

扣件式高大模板支架的概率极限状态设计法研究

1.
北京交通大学土建学院, 北京 100044;
2.
中国建筑西南设计研究院, 成都 610042;
3.
中建二局第四建筑工程有限公司, 天津 300457

基金项目: 国家自然科学基金项目（51578050）；国家重点研发计划项目（2016YFC0802003）

详细信息

作者简介:
付小辉(1988-),男,重庆人,助理工程师,硕士,从事结构设计(E-mail:hsk_ym@163.com);王立峰(1989-),男,河北人,硕士生,从事结构可靠性分析研究(E-mail:14125818@bjtu.edu.cn);胡杭(1983-),男,江西人,工程师,硕士,从事施工技术研究(E-mail:1983huhang@sina.com);武桐(1992-),男,山西人,硕士生,从事结构可靠性分析研究(E-mail:15125891@bjtu.edu.cn)

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:n_xie@sina.com).

中图分类号: TU755.2;TU312
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- 文章访问数: 341
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出版历程
- 收稿日期: 2015-12-09
- 修回日期: 2016-07-07
- 刊出日期: 2016-10-24

DESIGN METHOD OF LOAD AND RESISTANCE FACTOR FOR HIGH FALSEWORK WITH COUPLERS

1.
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
2.
China Southwest Architectural Design and Research Institute Corp., LTD, Chengdu 610042, China;
3.
The Fourth Company of China Second Engineering Bureau, Tianjin 300457, China

More Information

Corresponding author:
XIE Nan: 10.6052/j.issn.1000-4750.2015.12.0979

摘要

摘要: 近年来高大模板支架坍塌事故频发，尽管此类结构的验收标准低、荷载离散性大，但有关概率极限状态设计法的研究还十分不足。以搭设高度在7.6 m~14.0 m较为常见的扣件式高大模板支架为研究对象，给出了极限承载力的非线性简化计算方法，对比足尺整架试验数据，研究计算模式不确定性的统计特性；通过对现场采样数据、已有试验数据和容许误差等的分析，得出了满足规范要求的随机参数的统计特性；通过1000次Monte Carlo模拟得到了10种常用高大模板支架极限承载力的统计特性；基于枚举优化法，找出了与目标可靠指标一致性最佳的荷载效应分项系数和抗力分项系数，并将采用该文所建议方法得到的设计结果与按英国规范、我国现行规范得到的设计结果进行了比较。研究成果可为制定新规范提供理论依据。
- 高大模板支架 /
- 概率极限状态设计方法 /
- 极限承载力 /
- 统计特性 /
- 枚举优化法
Abstract: Many collapses of high falseworks have occurred in recent years. The research on the design method of load and resistance factor for high falseworks is not efficient in spite of the lower standard of quality acceptance and the larger discreteness of load compared with those of permanent structures. Thusly, high falseworks with couplers (HFC) with height of 7.6m to 14.0m are taken into account. A simplified nonlinear calculating method of ultimate capacity is suggested and the statistic characteristics of model uncertainty are estimated by comparing the full-size test capacities to the predictions. In the range of tolerances given by the code, the statistics of uncertain parameters are obtained based on the samples collected in construction fields, test data and tolerances given in the code. The ultimate capacity statistics of 10 typical HFCs are estimated through 1000 Monte Carlo simulations. The optimal factors of load effect and resistance are found in terms of Enumeration Method. Design results given by the methods, and the British Code as well as the Chinese Code are compared. The results can provide a theoretical foundation for a new code.
- high falsework /
- LRFD /
- ultimate capacity /
- statistical characteristics /
- enumeration method

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参考文献(21)

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文章访问数: 341
HTML全文浏览量: 25
PDF下载量: 106
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扣件式高大模板支架的概率极限状态设计法研究

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:n_xie@sina.com).

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出版历程

DESIGN METHOD OF LOAD AND RESISTANCE FACTOR FOR HIGH FALSEWORK WITH COUPLERS

Corresponding author: XIE Nan: 10.6052/j.issn.1000-4750.2015.12.0979

计量

出版历程

目录

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:n_xie@sina.com).

Corresponding author:
XIE Nan: 10.6052/j.issn.1000-4750.2015.12.0979