深水大直径嵌岩钢管桩施工期风险分析
|
摘要
对施工期深水桩基作了基于位移的可靠度分析,采用蒙特卡洛有限元方法,计算得到桩基随地基基床系数、嵌岩深度、桩长、桩径、桩身弹性模量、桩身重度及桩顶水平荷载等参数变化的失效概率;结合可靠度计算的结果,采用模糊数学理论对桩基直接经济损失进行分析,计算得到桩基发生不同程度损失的概率,较全面系统地对施工期的深水桩基工程进行了风险分析。
Based on the literature research,the method which integrates Monte Carlo simulation technique and finite element method was used to quantify the reliability of rock-socketed steel pipe pile during construction considering pile-soil interaction behavior and uncertainties in various variables.Uncertainties associated with horizontal foundation coefficients,rock-socketed length,section properties of the pile and load conditions were explicitly considered.Combining with the result of the reliability analysis,fuzzy theory was used to calculate the direct economic loss of pile during construction.The probability of pile loss of different degrees was obtained through calculation and a comprehensive and systematic risk analysis for the construction period of the deepwater pile foundation was carried out.
Based on the literature research,the method which integrates Monte Carlo simulation technique and finite element method was used to quantify the reliability of rock-socketed steel pipe pile during construction considering pile-soil interaction behavior and uncertainties in various variables.Uncertainties associated with horizontal foundation coefficients,rock-socketed length,section properties of the pile and load conditions were explicitly considered.Combining with the result of the reliability analysis,fuzzy theory was used to calculate the direct economic loss of pile during construction.The probability of pile loss of different degrees was obtained through calculation and a comprehensive and systematic risk analysis for the construction period of the deepwater pile foundation was carried out.
引文
[1]《桩基工程手册》编写委员会.桩基工程手册[M].北京:中国建筑工业出版社,1995.
[2]李铁夫,周孝贤.我国常用铁路桥梁的结构可靠性评估[M].北京:人民交通出版社,1989.
[3]GB50068—2001建筑结构可靠度设计统一标准[S].
[4]Ma H.Analysis of Redundant Ductile Structural System[D].Urbana-Champaign:University of Illinois,1981:554-562.
[5]段楠,薛会民,潘越.用蒙特卡洛法计算可靠度时模拟次数的选择[J].煤矿机械,2002(3):13-14.
[6]JTG D63—2007公路桥涵地基与基础设计规[S].
[7]尹之潜.城市地震危害性分析的基本框架和方法[J].地震工程与工程振动,1999(1):177-181.
[8]邢燕.在役结构在未来地震中的损失估计[D].西安:西安建筑科技大学,2004.
[9]张相庭.风灾经济损失模型及定量估算的研究和探讨[M].北京:科技出版社,1997.
[10]崔剑峰,张相庭.高耸结构风灾经济损失预测的研究[J].同济大学学报:自然科学版,2000,17(5):2463-2476.
[11]曹崇高,张相庭.结构风灾经济损失模型的建立及其应用[J].安阳师范学院学报,2000,10(2):139-144.
[12]宇霞.基于模糊综合评判法的建筑质量与经济效益评价研究[D].阜新:辽宁工程技术大学,2006.
[13]陈龙.城市软土盾构隧道施工期风险分析与评估研究[D].上海:同济大学,2004.
[14]朱琳.深水大直径钢管混凝土桩施工期稳定性风险分析[D].上海:同济大学,2008.
[2]李铁夫,周孝贤.我国常用铁路桥梁的结构可靠性评估[M].北京:人民交通出版社,1989.
[3]GB50068—2001建筑结构可靠度设计统一标准[S].
[4]Ma H.Analysis of Redundant Ductile Structural System[D].Urbana-Champaign:University of Illinois,1981:554-562.
[5]段楠,薛会民,潘越.用蒙特卡洛法计算可靠度时模拟次数的选择[J].煤矿机械,2002(3):13-14.
[6]JTG D63—2007公路桥涵地基与基础设计规[S].
[7]尹之潜.城市地震危害性分析的基本框架和方法[J].地震工程与工程振动,1999(1):177-181.
[8]邢燕.在役结构在未来地震中的损失估计[D].西安:西安建筑科技大学,2004.
[9]张相庭.风灾经济损失模型及定量估算的研究和探讨[M].北京:科技出版社,1997.
[10]崔剑峰,张相庭.高耸结构风灾经济损失预测的研究[J].同济大学学报:自然科学版,2000,17(5):2463-2476.
[11]曹崇高,张相庭.结构风灾经济损失模型的建立及其应用[J].安阳师范学院学报,2000,10(2):139-144.
[12]宇霞.基于模糊综合评判法的建筑质量与经济效益评价研究[D].阜新:辽宁工程技术大学,2006.
[13]陈龙.城市软土盾构隧道施工期风险分析与评估研究[D].上海:同济大学,2004.
[14]朱琳.深水大直径钢管混凝土桩施工期稳定性风险分析[D].上海:同济大学,2008.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心