With the sustained and rapid development of social economy of China,urbanization process is accelerating,and there appeared more and more pipeline projects such as water,electricity,heating,oil and gas frequently crossing the railway.Trenchless technology is often used for construction of pipeline crossing railway,mainly including pipe jacking method,horizontal directional drilling method and pipe ramming method.Pipe ramming method shows its advantages when pipe jacking and horizontal directional drilling methods are limited by railway transportation conditions and surrounding environment.In this study,numerical simulation on pipe ramming method construction is carried out to investigate stability of subgrade and settlement induced by the vibration of the rammed pipe.The law of mutual influence among diameter of the rammed pipe,buried depth,ramming force and stratum characteristics has been obtained.Ramming ability of different strata is summarized through engineering practical cases,which provides theoretical and technical support for the application of ramming method construction in pipeline crossing railway engineering.
维普
万方数据