美国新海湾大桥钢塔焊接技术和质量管理

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美国新海湾大桥钢塔具有单根塔柱结构形式复杂、全部为厚板结构(60~100 mm)、钢塔垂直度要求高(1/2500)及单根吊装节段长且重等特点,制造难度大。针对以上问题,文中从钢塔厚板母材和焊接材料的选用及焊接质量要求、焊接工艺措施(包括板单元焊接及塔柱翻身焊接)、现场施工技术措施、塔体焊接现场质量管理等方面总结了项目实施过程中获得的经验。采用以上焊接技术及质量管理措施,有效保证了美国新海湾大桥钢塔按时顺利完工验收。
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