Construction method of non-excavation top pipe pre-stress beam

The invention discloses a construction method of a non-excavation top pipe pre-stress beam. The construction method comprises the sequentially-executed steps of concrete top pipe construction, steel top pipe construction, pre-stress system construction, anchor bearing plate mounting and pre-stress tendon tensioning, pre-stress beam forming through concrete top pipe interior pouring, and connectionof the pre-stress beam and an earthen ruin foundation bearing table. On the basis of ensuring that pre-stress beam construction meets construction requirements, destruction of an excavation-type construction mode on ruin soil bodies is reduced, it is effectively ensured that the ruin soil bodies are complete, the good conditions are created for protection and research work of ruins, the influences of excavating a large amount of earthwork on the aspects such as earthwork transportation and dust raising pollution are reduced, and the impact on the environment is lowered. 本发明公开了一种非开挖式顶管预应力梁施工方法，包括依次进行的混凝土顶管施工、钢顶管施工、预应力