Integral seamless bridge with multifunctional heat insulation bridge floor and construction method of integral seamless bridge

The invention provides an integral seamless bridge with a multifunctional heat insulation bridge floor and a construction method of the integral seamless bridge. The seamless bridge includes: a bottom support structure; the two ends of the bridge span structure main beam are erected on the bottom supporting structure; the temperature inertia concrete bridge deck is arranged above the bridge span structure main beam; the phase change asphalt bridge deck pavement layer is paved on the temperature inertia concrete bridge deck slab, the bridge abutment structure and the guide plate; and the composite structure reflective heat insulation coating is sprayed on the phase change asphalt bridge deck pavement layer. Heat radiation is reflected and insulated through the multi-structure reflective heat insulation coating; the phase-change asphalt bridge deck pavement layer can absorb surrounding heat when the surrounding temperature reaches the phase-change temperature of the phase-change material, store the surrounding