Comparison of criteria and calculation method for pile foundation settlement by domestic and international standards
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.
pile foundationsettlement criteriasettlement calculationdomestic and foreign standard
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