Taking the nine groups of pile foundations located in the vicinity of Xicun Station of Guangzhou metro as an example

the field monitoring method of adjacent pile foundation settlement was studied by three-dimensional numerical analog analysis technique.And the settlement control standard

monitoring and measurement management level and frequencies of adjacent pile foundation in Xicun Station were established.The settlement field monitoring value and calculation value of nine groups of adjacent pile foundations in Xicun Station were analyzed.The results show that: the nine adjacent pile foundations settlement partition result from field monitoring va-lue is in substantial agreement with that from calculation value in the case of adopting reinforcement measures

only XJ27 and XJ31 pile foundations are somewhat different.XJ27 and XJ31 pile foundations field monitoring value slightly larger than calculation value in the case of adopting reinforcement measures.XJ27 pile foundation settlement partition result changes from C area to B area

and XJ31 pile foundation settlement partition result changes from D area to C area.The cause of XJ34 pile foundation settlement being too large mainly includes: the inferior quality of reinforcement measures

the excessive disturbance of surrounding rock by tunnel excavation and so on.The proposed field monitoring method for adjacent pile foundation settlement in Xicun Station of Guangzhou metro is right.