Connecting structure of UHPC (Ultra High Performance Concrete) trench cover plate and highway side trench

The utility model discloses a connecting structure of UHPC (Ultra High Performance Concrete) trench cover plates and a road side trench, which comprises steps at the tops of two side walls of a U-shaped reinforced concrete trench body with an upward opening and a plurality of UHPC trench cover plates, a plurality of pairs of UHPC cushion blocks are fixed on the steps at the two sides, the upper part of each UHPC cushion block is a convex column for limiting the length direction of the UHPC trench cover plate, and the upper part of each UHPC trench cover plate is a U-shaped groove. The lower part of each UHPC cushion block is a supporting part for placing a UHPC trench cover plate, one UHPC trench cover plate is placed between the convex columns of every two adjacent pairs of UHPC cushion blocks, and a gap is formed between every two adjacent UHPC trench cover plates; each UHPC cushion block and the side wall of the step are fixed through anchor bolts, a plurality of anchor bolt via holes are formed in each UH