深大桥桩施工影响近邻隧道管片接缝张开量实测大数据研究  

Effects of Deep Bridge Pile Construction on the Opening of Adjacent Tunnel Segment Measured by Big Data

作　　者：陈璞 吴迪亮 王立峰[2,3] 沈燕倩 庞晋 CHEN Pu;WU Diliang;WANG Lifeng

机构地区：[1]杭州萧山城市建设投资集团有限公司,杭州311022 [2]浙江科技学院,杭州310023 [3]浙江明燧科技有限公司,杭州311422

出　　处：《科技创新与应用》2023年第17期14-17,共4页Technology Innovation and Application

摘　　要：以杭州某高架桥项目为依托,分析群桩施工前后管片环间接缝张开量和水平直径差异等的时空分布规律,研究群桩施工对近邻盾构隧道管片环间接缝张开量的影响。研究结果表明,2条并行单线隧道,管片在其中间的方位表现出张开量较小,普遍小于外侧;基桩施工产生挤土效应限制管片接缝张开,距离较近的隧道管片接缝张开量小于远桩隧道;离桩基施工较远一侧的隧道,管片环间接缝张开量的离散程度较高;环间接缝张开量与桩隧距离呈非线性正相关;管片环间接缝张开量与水平直径差异值存在一定的负相关性。Based on a viaduct project in Hangzhou,the spatial and temporal distribution of joint opening and horizontal diameter difference between segment rings before and after pile group construction was analyzed,and the influence of pile group construction on joint opening between segment rings of nearby shield tunnel was studied.The results show that the opening of segments in the middle of two parallel tunnels is smaller than that in the outside.The soil squeezing effect of foundation pile construction restricts the opening of segment joints,and the opening amount of segment joints in the tunnel with a closer distance is less than that in the tunnel with far pile.On the far side of tunnel from pile foundation construction,the dispersion degree of joint opening between segment rings is higher.There is a nonlinear positive correlation between ring seam opening and pile tunnel distance.There is a certain negative correlation between the indirect seam opening of segment ring and the difference of horizontal diameter.

关 键 词：群桩施工 近邻隧道 管片张开量 水平直径 统计分析 

分 类 号：TU473[建筑科学—结构工程]