国内外标准桩基础沉降控制指标及计算方法对比  

Comparison of criteria and calculation method for pile foundation settlement by domestic and international standards

作　　者：杨志远 刘宁 蔡伟[2] YANG Zhiyuan;LIU Ning;CAI Wei(China Harbor Engineering Co.,Ltd.,Beijing 100027,China;CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)

机构地区：[1]中国港湾工程有限责任公司,北京100027 [2]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2024年第9期73-78,共6页Port & Waterway Engineering

摘　　要：桩基础作为承载能力高、适用范围广的深基础结构形式,广泛应用于国内外港口水运工程中,而桩基础沉降将引起上部结构的损坏或影响流动机械的正常使用,因此需在桩基设计过程中开展沉降计算,以保证桩基变形在结构安全和使用允许的限值以内。国内外标准及相关工程设计手册针对桩基础沉降控制指标及计算方法给出较多建议。在沉降控制指标方面,中国标准规定较为详细;在单桩沉降量计算方法方面,国外标准对于桩身压缩性、土体弹性模量、泊松比等基础参数研究较多,其线性理论公式具有较强的实用性。通过对比国内规范、欧洲BS EN规范及美国常用桩基设计手册等研究成果,以中东某引桥工程为例开展桩基沉降计算,总结提炼各类标准差异,旨在为国内外水运项目桩基础设计过程中的沉降控制及计算方法确定提供参考。As a deep foundation structure with high bearing capacity and wide application range,pile foundation is widely used in domestic and foreign port and water transportation projects.However,settlement of pile foundation will cause damage to the superstructure or affect the normal use of mobile machinery,so settlement calculation should be carried out during design for pile foundation to ensure that the deformation of pile foundation is within the allowable limit of structural safety and normal serviceability.Domestic and foreign standards and related engineering design manuals provide many suggestions on the settlement criteria and calculation method for pile foundation.In terms of settlement criteria,Chinese standards have more detailed provisions.In terms of calculation method of single pile settlement,foreign standards have more research on basic parameters such as pile compressibility,soil elastic modulus and Poisson's ratio,etc.Their linear theoretical formulas have more practicability.By comparing the results of the domestic pile foundation code,European BS EN code and the common pile foundation design manual in the United States,a pile foundation settlement calculation is carried out using a certain approach bridge project in the Middle East as an example.Various standard differences were summarized and extracted,aiming to provide reference for the settlement criteria and calculation method in the process of pile foundation design in domestic and foreign water transportation projects.

关 键 词：桩基础 沉降控制指标 沉降计算 国内外标准 

分 类 号：U655.544.1[交通运输工程—港口、海岸及近海工程]