“华龙一号”大型钢筋笼模块化施工技术研究及应用

Study and Application of Modular Construction Technique for the Large Reinforcement Cage of HPR1000

目前“华龙一号”核电建设项目钢筋工程施工主要是人工现场绑扎,作业量大、效率低,现场施工周期长。针对“华龙一号”钢筋工程施工中存在的痛点问题,从机械化、高效化的技术创新思路开展大型钢筋笼施工前沿技术探索,主要思路是将钢筋绑扎的工作转移到地面提前预制,通过垂直运输设备完成吊装,与现场预留的钢筋通过特制的机械接头连接,从而将钢筋绑扎工作移除关键路径,达到缩短主线工期的目的。具体操作为利用BIM(三维动画模拟预制、吊装、就位全过程)技术进行大型钢筋笼施工,钢筋在预制场地提前预制,现场具备吊装条件后整体吊装,将钢筋工程施工逻辑由“依次”转化为“平行”,加快现场施工节奏,大幅缩短钢筋工程施工周期,同时提高施工质量,降低安全风险,为我国完全自主的三代核电技术批量化建设和“走出去”提供强力保证。

At present,the reinforcement works of the HPR1000 nuclear power construction project are mainly constructed by manual on-site binding,with large workload,low efficiency and long on-site construction period.In view of the pain points in the construction of the HPR1000 reinforcement project,the frontier technology exploration of large-scale reinforcement cage construction is carried out from the perspective of mechanization and efficiency.The main idea is to transfer the reinforcement binding work to the ground for prefabrication in advance,complete the hoisting through vertical transportation equipment,and connect with the on-site reserved reinforcement through special mechanical joints,so as to remove the critical path of reinforcement binding work to shorten the main line construction period.The specific operation is to use BIM(three-dimensional animation simulation of the whole process of prefabrication,hoisting and positioning)technique to carry out the construction of large reinforcement cages.The reinforcement is prefabricated in advance at the prefabrication site.After the site is ready for hoisting,the overall hoisting will be carried out.The construction logic of the reinforcement works will be transformed from“sequential”to“parallel”,speeding up the on-site construction rhythm,significantly shortening the construction period of the reinforcement works,while improving the construction quality and reducing safety risks.It provides a strong guarantee for the batch construction and“going global”of China’s fully independent third-generation nuclear power technology.