1) bulkhead pressure
正面推力
1.
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。
2.
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。
2) bulkhead additive thrust
正面附加推力
1.
Assuming soil is not drained,the computing formulas of soil vertical deformation induced both by bulkhead additive thrust,force of friction between shield and soil,and force of friction between follow-up pipes and soil are derived from the Mindlin solution in elastic mechanics.
假定土体不排水,利用弹性力学的Mindlin解推导了顶管正面附加推力、掘进机和后续管道与土体之间的摩擦力引起的土体垂直变形计算公式。
2.
The computing formulas of superimposed load on adjacent level parallel pipe induced both by bulkhead additive thrust,force of friction between shield and soil,and force of friction between follow-up pipes and soil are derived from the Mindlin solution in elastic mechanics.
利用弹性力学的Mindlin解,推导得到顶管正面附加推力、掘进机和后续管道与土体之间的摩擦力在相邻水平平行管道上引起的附加荷载计算公式。
3.
Assuming soil was undrained,the computing formulae of ground deformation induced by both bulkhead additive thrust and friction force between shield and soil were derived from the Mindlin solution in elastic mechanics.
假定土体不排水,利用弹性力学的Mindlin解,推导正面附加推力、盾壳与土体之间的摩擦力引起的地面变形计算公式;提出土体损失引起的三维地面变形计算公式。
3) ahead thrust
正车推力
4) forward thrust
正推力
5) forward thrust
正向推力
6) normal thrust
正常推力
补充资料：比推力
分子式：
CAS号：
性质：又称比推力。单位质量流量推进剂产生的推力或单位质量推进剂燃烧所产生的冲量。是衡量固体推进剂能量特性的重要参数，单位为N·s/kg。比冲大小对火箭的射程影响很大，比冲越高，射程越远。要获得高比冲推进剂，要求推进剂具有高的化学能、高的燃烧效率和高的喷管效率。目前常用的固体推进剂理论比冲值范围为2391～2666N·s/kg。
CAS号：
性质：又称比推力。单位质量流量推进剂产生的推力或单位质量推进剂燃烧所产生的冲量。是衡量固体推进剂能量特性的重要参数，单位为N·s/kg。比冲大小对火箭的射程影响很大，比冲越高，射程越远。要获得高比冲推进剂，要求推进剂具有高的化学能、高的燃烧效率和高的喷管效率。目前常用的固体推进剂理论比冲值范围为2391～2666N·s/kg。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条