摘要
压水堆核电机组AP1000广泛采用先进的模块化施工技术。由于结构模块本体重量大、尺寸大、重心高、易于变形等,使得在模块的现场拼装和翻转过程中,凸显出大量的施工技术挑战和难点。在组对过程中,采用子模块对各尺寸控制DP(尺寸控制点)点;在焊接过程中,采用防变形工装并严格控制双相不锈钢墙面板及剪力钉焊接工艺;在翻转过程中,采用防变形工装。在实践基础上,通过对大型结构模块现场拼装技术和翻转技术进行归纳,为我国核电大型结构模块的拼装施工提供技术参考。
The large-scale structure modular assembly technology had been widely applied in AP1000 PWR nuclear power plant. Due to the inherent features of heavy weight, large size, high center of gravity, and easy deformation for the structure module, the structure modular assembly technology highlights the challenges and innovative for the onsite assembly and lifting upright construction processes. The data points for each sub-module are used for the sub-assemblies fit-up during assembling; the anti-deformation fixtures, and the welding processes for duplex stainless steel wall plates and shear stud are used during welding; the anti-deformation fixtures are used for the sub-assemblies upender lifting. Based on the practices, the experiences for large-scale structure modular assembly and upender lifting had been summarized with a view to provide a technical reference to large-scale structure modular construction in China.
出处
《钢结构》
2012年第11期71-76,共6页
Steel Construction
关键词
核电
大型结构模块
拼装技术
nuclear power
large-scale structural module
assembling techniques
