螺柱焊在沉管隧道项目中的应用研究

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中图分类号：TG457.3 文献标志码：A

Research on Application of Stud Welding in Immersed Tunnel Projects

MALing， ZHU Xiaoyan， CHEN Yanfang， PAN Junfa， LIU Ya （CSSC Huangpu Wenchong Shipbuilding Co.，Ltd.，Guangzhou 511462，China）

Abstract： This study addresses technical challenges in high-density stud cluster welding for stel-concrete composite structures in immersed tunnel enginering.Systematic research was conducted on stud welding process optimization， quality control， and engineering applications.Design of experiments was adopted to optimize welding parameters，effectively resolving quality issues such as arc blow deflection， necking defects，and porosity. A comprehensive quality management system covering pre-weld preparation， in-process control， and postweld inspection was established， significantly improving welding reliability. The outcomes provide a systematic technical solution for high-density stud welding in subsea tunnels，demonstrating substantialvalue for similar major engineering projects.

Key words： immersed tunnel; stud welding; parameter optimization;quality control; subsea engineering

1 引言

近年来，伴随着钢-混凝土组合结构的发展，螺柱焊在工程建设中的应用越来越多，沉管隧道同样采用钢-混凝土组合结构，因沉入海底，对焊接技术有了更高要求：一方面因长期承受海底腐蚀、高压及复杂荷载的影响，结构强度的需求更高了；另一方面因数百万颗焊钉的大规模焊接，焊接速率需要达到更高水平。（剩余4373字）