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.
作者
陈孝湘
陈勇
赵剑豪
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)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
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)
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
tunnel engineering
submarine engineering
super-long distance
large diameter pipe-jacking
jacking force
frictional resistance
relay wall
