From the technology of reducing friction slurry and the relay jacks, the jacking force of long pipe jacking has been analyzed.
从触变泥浆减摩技术和中继接力技术两个方面对超长距离顶管施工中的顶推力进行了研究。
The jacking force has apparent effects on displacement and stress distribution of segments, and it is the most adverse load case during construction stage.
千斤顶顶力对施工阶段管片的位移、应力有明显的影响，千斤顶顶力作用是管片在施工状态下最不利的工况。
Then considering the friction forces on the well sides and well bottom, the permissible jacking force was calculated through the horizontal forces balance of the whole working well.
考虑了沉井底部和侧壁的摩阻力，由沉井整体水平向受力平衡计算允许顶力。
When the resistive moment of surrounding soil is less than the torsional moment of eccentric jacking force, stability failure of pipeline occurs and pipes deviates from the designed axes.
管道失稳是由于管道周围土体提供的抵抗力矩小于偏心顶推力而产生的扭转力矩，造成管节偏离设计轴线。
When the resistive moment of surrounding soil is less than the torsional moment of eccentric jacking force, stability failure of pipeline occurs and pipes deviates from the designed axes.
管道失稳是由于管道周围土体提供的抵抗力矩小于偏心顶推力而产生的扭转力矩，造成管节偏离设计轴线。
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