摘要
随着顶管器械的升级和施工技术的完善,长距离注浆顶管管壁摩阻力有了大幅降低,现有的经验公式已无法准确计算顶力大小。收集大量已有顶管工程的实测顶力数据,将顶力增长分为3个阶段,并以此对平均摩阻力取值范围进行优化分析。通过优化后的取值范围计算得到的顶力上下限区间,可以覆盖90%的实测数据,与实测数据的相对误差平均值为30%左右,具有一定的准确度,可作为今后顶管顶力计算的参考依据。
With the upgrading of pipe jacking equipment and the improvement of construction technology,the friction of long-distance grouting pipe jacking has been greatly reduced.The existing empirical formula can no longer accurately calculate the jacking force.This study collects a large amount of jacking force data from pipe jacking projects,and divides the jacking force growth into three stages to optimize the average friction value range.The upper and lower limits of the jacking force calculated through the optimized value range can cover 90%of the data,with average relative error of about 30%,which has a certain degree of accuracy and can serve as a reference for future pipe jacking force calculations.
作者
沈青松
陈烨
叶盛华
王潇弘
姚杰
SHEN Qing-song;CHEN Ye;YE Sheng-hua;WANG Xiao-hong;YAO Jie(PowerChina Huadong Engineering Corporation Limited,Hangzhou 310000,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2024年第20期63-67,共5页
China Water & Wastewater
关键词
顶管
顶力
平均摩阻力
经验公式
取值范围
pipe jacking
jacking force
average friction
empirical formula
value range
