湖南大学学报（自然科学版）2025，Vol.52Issue(11)：65-76,12.DOI:10.16339/j.cnki.hdxbzkb.2025106
地铁盾构施工下穿切桩贯入力计算方法及安全控制
Calculation Method of Penetration Force and Safety Control for Shield Cutting Piles During Metro Shield Under-crossing Construction
摘要
Abstract
During the construction of shield cutting piles,reasonable thrust force and control measures can effectively control the deformation of bridge piles,ensuring structural stability and construction safety.Based on a cutting pile project of Beijing Metro Line 12,the penetration force of the straight section of the double-edged ripper during steady-state cutting is derived based on the Mohr-Coulomb strength criterion.The penetration force model of the arc segment of the double-edged ripper is established based on the contact stress distribution on the cutter surface.The penetration force of the ripper is combined with the mathematical model of cutting pile to obtain the calculation method for the total shield thrust force.The total thrust model is validated based on the measured thrust values on site,and the effect of the thrust force on the deformation of the pile foundation is analyzed.Furthermore,an intelligent management and control platform is built based on the calculation method of the thrust force acting on the pile.The platform and construction control measures are applied to the cutting piles project,and the bridge settlement is simultaneously monitored.The monitoring results show that the maximum vertical settlement of the bridge piers and abutments in the cross-river section during cutting piles is 8.48 mm,and the maximum lateral differential settlement is 1.4 mm,respectively,both within the safe control range.关键词
盾构切桩/贯入力/桩基变形/施工控制/监测Key words
shield cutting pile/penetration force/pile deformation/construction control/monitoring分类
交通工程引用本文复制引用
刘波,高雷,李烃,张杰,孙鹏..地铁盾构施工下穿切桩贯入力计算方法及安全控制[J].湖南大学学报（自然科学版）,2025,52(11):65-76,12.基金项目
国家自然科学基金资助项目(42172319,U24B2039),National Natural Science Foundation of China(42172319,U24B2039) （42172319,U24B2039）
北京市国资委创新研究重点项目(201908),Key Innovation Research Project of State-owned Assets Supervision and Administration Commi-ssion of Beijing Municipality(201908) （201908）
