Construction method for obliquely crossing and undercrossing expressway by pushing box culvert with ultra-shallow soil

According to the construction method of the ultra-shallow soil covering pushing box culvert oblique crossing and undercrossing expressway, the problem of pavement settlement possibly caused when a shallow soil covering box culvert structure obliquely crosses and underpasses the expressway at a large angle is solved, a settlement self-compensation structure is arranged in advance, ground surface settlement is effectively quantified, standardized and controllable, construction is easy and convenient, and the construction efficiency is improved. The implementation effect has small dependence on the construction level, the settlement of the overlying earth surface of the box culvert can be effectively controlled, and the influence on the overlying crossed road in the box culvert pushing and undercrossing construction process is reduced, so that the structural safety and smooth driving of the overlying crossed road are ensured. 本发明提供一种超浅覆土顶推箱涵斜交下穿高速公路的施工方法，针对浅覆土箱涵结构大角度斜交下穿高速公路时可能造成的路面沉降问题，本发明通过提前设置沉降自补偿结构，有效地将地表沉降