海底超长距离大口径混凝土顶管顶力及摩阻力测试分析  

Test and Analysis of Jacking Force and Friction Resistance of Large-Diameter Concrete Pipe-Jacking with Super-long Distance at Seabed

作　　者：陈孝湘 陈勇 赵剑豪[4] 贺雷 陈文兴 叶琦棽 CHEN Xiaoxiang;CHEN Yong;ZHAO Jianhao;HE Lei;CHEN Wenxing;YE Qishen(Department of Civil Engineering,Xi an Jiaotong University,Xi an 710049,Shaanxi,China;Power China Fujian Electric Power Survey&Design Institute Co.,Ltd.,Fuzhou 350003,Fujian,China;Fujian Xinyongtong Municipal EngineeringCo.,Ltd.,Xiamen 361012,Fujian,China;Fujian Academy of Building Research Co.,Ltd.,Fuzhou 350108,Fujian,China;China Electric Power Research Institute Co.,Ltd.,Beijing 102401,China;State Grid Fujian Electric PowerCo.,Ltd.,Fuzhou 350003,Fujian,China)

机构地区：[1]西安交通大学,陕西西安710049 [2]中国电建集团福建省电力勘测设计院有限公司,福建福州350003 [3]福建省鑫勇通市政工程有限公司,福建厦门361012 [4]福建省建筑科学研究院有限公司,福建福州350108 [5]中国电力科学研究院有限公司,北京102401 [6]国网福建省电力有限公司,福建福州350003

出　　处：《重庆交通大学学报（自然科学版）》2020年第3期136-141,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家电网公司依托工程基建新技术研究项目(20160124)

摘　　要：基于厦门翔安某海底综合管廊工程先行线顶管的实测顶力,分别研究了总顶力Fp、平均摩阻力fk与顶程L的相关关系,以细化后行线顶管的平均摩阻力fk取值。结果表明:当顶程L=0~20 m,fk绝对值大、波动频繁;当顶程L>30 m,fk≈3.0 kPa;当顶程L>380 m,fk<2.0 kPa,并全区间fk在2.0 kPa上下震荡,且均未超过3.0 kPa;当施工停滞时,fk在恢复顶进的2~5 m范围内显著增大,随后迅速回落至正常水平。研究结果为后行顶管的平均摩阻力取值和中继间布置提供了依据。Based on the in-situ measured data of the first pipe-jacking of Xiamen Xiang'an subsea comprehensive pipe gallery project,the correlation between the jacking force Fp,the average resistance friction fk and the jacking distance L were studied,so as to refine the value of the average resistance friction fk in the second pipe-jacking.The results show that:fk has a large absolute value and fluctuates frequently when L=0~20 m;fk≈3.0 kPa when L>30 m;when L>380 m,and fk<2.0 kPa,fk oscillates up and down at 2.0 kPa and never exceeds 3.0 kPa.When the construction stops,fk increases significantly in the range of 2~5 m of recovery jacking and then it quickly falls back to normal level.The research results provide the basis for the average friction value of the second pipe-jacking and the layout of the relay wall.

关 键 词：隧道工程 海底工程 超长距离 大口径顶管 顶进力 摩阻力 中间继 

分 类 号：TU990.3[建筑科学—市政工程]