Molding construction system for expansion joint of underground garage top plate

An underground garage roof expansion joint mould construction system relates to the technical field of building engineering and comprises an expansion joint mould, a metal water-stop belt, a water-swelling water-stop strip, a bolt and a waterproof layer. The construction efficiency of the expansion joint can be improved through mold construction, the leakage-proof effect of the expansion joint is improved, the structure of the expansion joint has pressure resistance, the waterproof layer is prevented from settling, the waterproof layer can be integrated with the waterproof layer of the garage top plate, and the overall waterproof performance of the garage top plate is further improved. 一种地下车库顶板伸缩缝模具化施工体系，涉及建筑工程技术领域，包括伸缩缝模具、金属止水带、遇水膨胀止水条、螺栓、防水层。本新型通过模具化施工可提高伸缩缝施工的效率，提高伸缩缝的防漏效果，并使伸缩缝的结构具有抗压性，防止防水层沉降，且防水层能够与车库顶板的防水层成为一体，进一步提高了车库顶板的整体防水性能。