并行顶管施工对管土接触压力影响数值模拟分析  

Numerical Simulation Analysis of the Influence of Parallel Pipe Jacking on Pipe-Soil Contact Pressure

作　　者：胡祥星 雷庆关 邓文杰 HU Xiangxing;LEI Qingguan;DENG Wenjie(School of Civil Engineering,City University of Hefei,Hefei 230071,China)

机构地区：[1]合肥城市学院土木工程学院,安徽合肥230071

出　　处：《徐州工程学院学报(自然科学版)》2025年第1期16-22,共7页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：安徽省高等学校科学研究项目(2022AH052469);安徽省教育厅质量工程项目(2022sx116);安徽省一流本科专业建设点资助项目(皖教秘高〔2020〕11号)。

摘　　要：并行顶管顶进过程中的受力较为复杂,为了研究施工时引起的管土接触压力变化特性,以合肥市钟油坊污水处理厂DBO项目隧道开挖顶管施工为背景,通过现场数据监测,研究多排顶管并行施工对管土接触压力影响的规律,并采用ABAQUS软件建立顶管数值分析模型,分析了一孔顶管单独施工下随着顶进距离的增大对管土接触压力变化规律的影响.研究结果表明,随着管节顶进距离的增大,管周土压力变化曲线呈现先减小后稳定的趋势.由于管节底部需承担管节自重压力,通常管节下侧的管土接触压力高于上侧.数值模拟与现场监测结果总体上比较接近,可为类似并行顶管施工过程中的管土接触压力分析提供一定的参考.The forces experienced during parallel pipe jacking are highly complex.In order to investigate the characteristics of pipe-soil contact pressure changes caused by construction activities,this paper takes the tunnel excavation and pipe jacking construction of the DBO project of Zhongyoufang Wastewater Treatment Plant in Hefei as the technical background.It uses on-site monitoring data to investigate the patterns of influence on pipe-soil contact pressure resulting from the simultaneous construction of multiple rows of pipes.In addition,a numerical analysis model of pipe jacking is constructed using ABAQUS software.The model evaluates the effect of increased jacking distance on the change in pipe-soil contact pressure when a single pipe is jacked.A comparison and analysis of the numerical simulation data and the field monitoring data is then carried out.The results of the analysis show that as the jacking distance increases,the change in soil pressure around the pipe has a relatively flat profile,initially decreasing and then stabilizing.It is typical that the contact pressure between the pipe and the ground at the bottom of the pipe section exceeds that at the top,due to the dead weight of the pipe section.The comparison between the numerical simulation and the on-site monitoring results is remarkable for its similarity.The results of this research can serve as a reference for the analysis of pipe-soil contact pressure in similar parallel pipe jacking construction processes.

关 键 词：顶管施工 现场监测 管土接触压力 数值模拟 

分 类 号：TU992[建筑科学—市政工程]