一种受拉环梁模块设计及拼装工艺优化

A kind of modular design and assembly process optimization of the tension ring beam

第三代先进核电技术采用模块化设计与拼装建造理念,可有效缩短核电站建造周期。该核电站屏蔽厂房(简称SC)受拉环梁为圆柱形双面板结构,双面板间由对拉钢筋连接。屏蔽厂房受拉环梁结构模块具有重量重、直径大、形状特殊、焊缝条数多、刚性强等特点。受拉环梁结构模块建造过程中受设计、制造、安装进度等各方面的影响,对安全、质量、工艺、技术均提出了更高的要求。本文根据该核电站受拉环梁的建造实践,从设计、厂内预制及现场拼装三个方面总结了受拉环梁结构模块设计及拼装工艺优化建议,优化后可节约工期约180个工作日,提高了核电站模块化建造水平。

The third-generation advanced nuclear power technology adopts the concept of modular design and assembly construction, which can effectively shorten the construction period of nuclear power plants. The tensile ring beam of the shielded workshop(SC) of the nuclear power plant is a cylindrical double-panel structure, and the double-panel is connected by a pair of tensile steel bars. The tensile ring beam structure module of the shielded workshop has the characteristics of heavy weight, large diameter, special shape, large number of welding seams, and strong rigidity. Affected by the design, manufacture, installation progress and other aspects during the construction of the tension ring beam structure module, higher requirements have been put forward for safety, quality, craftsmanship and technology. Based on the construction practice of the tension ring beam of the nuclear power plant, the structural module design and assembly process optimization suggestions of the tension ring beam have been summarized from the aspects of the design, in-plant prefabrication and on-site assembly. After optimization, the construction period can be saved by about 180 working days, which improves the modular construction level of nuclear power plant.