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冷成型桥梁用波形钢腹板制造工艺
Authors
孙天明
李新峰
江林雁
王赞芝
Publication date
1 January 2014
Publisher
Editorial Department of Progress in Steel Building Structures, Tongji University
Doi
Cite
Abstract
山东鄄城黄河公路大桥是目前规模最大的波形钢腹板PC组合结构桥梁,也是国内首次大规模使用波形钢腹板的工程。在考察日本等国家波形钢腹板制造技术的基础上,分析了以往采用传统冷成型方法生产中厚钢波形钢腹板产生的各种缺陷及原因,在山东鄄城黄河公路大桥的波形钢腹板制作中,将传统工艺中多点同时受压改为仅在钢板的波峰或波谷的中央处用上模和底模将钢板夹紧,而从夹紧处用小半径辊轮向两侧碾压的方法,使钢板在非设计折角处不产生塑性变形,并且与传统加工方法相比在设计折角区域也仅产生很微小量的拉伸和压缩变形。该工艺避免了钢板因受拉引起的损伤和微裂纹等各种缺陷的产生,提升了产品各项质量指标,提高了生产效率,并延长了产品使用寿命。在制作山东鄄城黄河公路大桥波形钢腹板过程中,制定的产品质量控制指标对钢板矫正、喷砂、喷铝、喷漆这4个工序作了补充。按照该方法浙江中隧桥波形钢腹板有限公司已成功建造了拥有自主知识产权的冲压加工机组,并获得了18项专利
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Last time updated on 28/12/2024