基于反分析方法的沉桩过程分析  

ANALYSIS ON DRIVING PROCESS OF STEEL PILES BY BACK ANALYSIS METHOD

作　　者：刘润[1] 闫澍旺[1] 杨晓刚[2] 林源 

机构地区：[1]天津大学建工学院岩土工程研究所,天津300072 [2]海洋石油股份有限公司,天津300450 [3]湖北省路桥公司,武汉430052

出　　处：《岩石力学与工程学报》2004年第z1期4610-4614,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金项目(50309009)资助课题。

摘　　要：可靠的土性资料是准确预测沉桩可打入性的前提条件。崖城气田RDPP1平台建设中的土性资料离散性较大,给进行准确的打桩分析带来了困难。根据现有的地质勘察资料和试桩的打桩记录,采用反分析方法借助波动方程和相关的计算程序,经过对比分析最终确定了适宜的土性参数并用于该工程的打桩分析中,沉桩过程的分析结果与工程实测资料吻合较好。说明该方法具有较好的可行性和实用性,可为工程设计人员参考使用。Reliable soil properties play an important role in predicting the drivability of steel piles.There is great discreteness in the investigation data of RDPP1 platform in Yangcheng Gas Field,which results in difficulty in predicting the pile drivability.Therefore,these data can not be directly used in the prediction and it is necessary to determine a set of reliable data.Based on the existing investigation data and the driving record of test piles,back analysis method is adopted in determining the soil properties.A set of soil data is determined and applied in the prediction by using the one-dimension wave equation and a computer program.The prediction results agree well with the observation,which shows the proposed back analysis procedure is reliable in similar projects.

关 键 词：土力学 反分析 可打入性 贯入深度 一维波动方程 

分 类 号：TU473.1+4[建筑科学—结构工程]