During the construction process of the extra-shallow-underground-pipe jacking with short-radius curve,the problem of the ground disturbance must be paid attention to.

Analyses on ground surface settlement due to extra-shallow-underground-pipe jacking with curve by stochastic medium theory;

With rapid development of civil economy, along with reform-open policy, numbers of Super-Shallow-Underground-Pipe-Jacking projects are being carried out in view of national sustainable development strategy and large-scale municipal engineering.

Researches on the stability calculation and reinforcement design of the continuous welded rails with small radius curves;

Based on analysis of three commonly\|seen derail cases over small radius curves, i.

Research purposes: To solve the problems on designing continuous welded rail on bridge in the small radius curve section.