Waterproof construction method for large-size bearing platform in water

The invention relates to the field of infrastructure, and particularly relates to a waterproof construction method for a large-size bearing platform in water. The waterproof construction method comprises the steps of surveying and setting out, foundation pit excavation, substrate treatment, steel formwork machining, first-layer steel formwork installation, second-layer steel formwork installation, formwork removal and the like. According to the waterproof construction method, steel formworks have reliable integrity and good waterproofness, block splicing and repeated use are also facilitated, and the steel formworks can achieve the waterproof effect and can also be used as foundation or bearing platform construction formworks; and as a temporary maintenance structure, the steel formworks can be used in a turnover mode, and the engineering cost is low. 本发明涉及基础设施领域，具体涉及一种水中大体积承台防水施工方法。包括测量放线、基坑开挖、基底处理、钢模板加工、第一层钢模板安装、第二层钢模板安装、模板拆除等步骤，本发明钢模板具有可靠的整体性和良好的防水性，亦有利于分块拼装重复使用，既能做到防水又可作为基础或承台施工模板使用；作为一种临时性维护结构，钢模板能周转使用，工