深水大直径嵌岩钢管桩施工期风险分析  

Risk analysis of large-diameter rock-socketed steel pipe pile in deep water during construction period

作　　者：朱琳 黄宏伟[2] 王怀忠[3] 

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032 [2]同济大学地下建筑与工程系,上海200092 [3]宝山钢铁股份有限公司,上海201900

出　　处：《水运工程》2012年第2期143-147,共5页Port & Waterway Engineering

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.

关 键 词：钢管桩 嵌岩桩 深水桩基 施工期风险 可靠度分析 经济损失 

分 类 号：TU473[建筑科学—结构工程]