桩基施工对桩周土体位移变化规律影响研究  

Research on the influence of pile foundation construction on the variation law of soil displacement around pile

作　　者：李伟 Li Wei(Lunan High Speed Railway Co.,Ltd.,Jinan Shandong 250102,China)

机构地区：[1]鲁南高速铁路有限公司,山东济南250102

出　　处：《山西建筑》2023年第23期90-94,共5页Shanxi Architecture

摘　　要：主要介绍新建桩基施工的场地概况和工艺,并通过在施工现场设置监测设备,监测桩基施工引起的桩周土体位移。对于位于南昌县富山乡的新建昌景黄铁路向莆联络线340号墩,设计了一套监测方案,其中靠近既有线的位置安排了非自由场位移监测点,而远离既有线的位置则安排了自由场位移监测点。对桩基不同施工阶段(即桩基成孔阶段、浇筑混凝土阶段、混凝土硬化阶段)对桩周土体的位移影响进行了分析,并通过实时监测施工全过程中桩周土体的位移变化,对监测数据进行整理与分析,以评估邻近营业线施工的安全范围,并为将来可能出现的类似施工情况和理论分析提供参考依据。This paper mainly introduces the site overview and process of new pile foundation construction,and monitors the soil displacement around the pile caused by pile foundation construction by setting up monitoring equipment at the construction site.For the new Changjinghuang Railway Xiangpu Connection Line No.340 pier located in Fushan Township,Nanchang County,a monitoring scheme was designed,in which non-free field displacement monitoring points were arranged near the existing wire,and free field displacement monitoring points were arranged far away from the existing wire.This study aims to analyze the influence of displacement of soil around piles in different construction stages of pile foundation(i.e.pile foundation hole forming stage,concrete pouring stage,concrete hardening stage).We monitor the displacement changes of the soil around the pile in real time during the whole construction process,and organize and analyze the monitoring data to evaluate the safety scope of adjacent business line construction,and provide a reference for similar construction situations and theoretical analysis that may occur in the future.

关 键 词：桩基施工 邻近线施工 现场监测 桩周土体位移 

分 类 号：TU753.3[建筑科学—建筑技术科学]