normal thrust

By using Mindlin solution and boundary element method,the calculation formulas of superimposed stress of surrounding soil induced by bulkhead pressure and friction force during the propulsion of shield tunneling are deduced.

结合弹性力学Mindlin解,运用边界单元法,推导了施工过程中盾构正面推力和盾壳与土体之间的摩擦力引起的周围土体附加应力计算公式。

The construction mechanics effects of pipe-jacking with earth pressure balance are analyzed,for instance,the bulkhead pressure,stratum loss,and grouting.

采用3D数值分析方法对机头正面推力、地层损失、注浆以及共同作用等进行模拟,旨在了解顶管施工引起的环境力学效应,为采取措施减小这种影响提供依据。