论文部分内容阅读
在我国,悬索桥主缆的防腐基本上参照了欧美的方法,即在索股外表面涂腻子后缠绕圆形钢丝,然后,在缠丝外表面进行常规涂装及嵌缝。由于以前对主缆防腐及其嵌缝未能引起重视,再加上防腐体系本身的缺陷,国内悬索桥主缆几乎都出现了涂装及嵌缝层开裂,导致主缆进水腐蚀,危及主缆安全。润扬长江公路大桥南汊悬索桥在考察国内外众多同类桥梁的主缆防腐技术后,首次引进并采用了日本新日铁公司的防腐新技术。
In our country, the anti-corrosion of the main cable of the suspension bridge basically refers to the method of Europe and the United States, that is, the round wire is wound after putting the putty on the outer surface of the cable stock, and then the conventional coating and caulking are performed on the outer surface of the wire winding. Due to the previous failure of the main cable caulking and caulking failed to pay attention, coupled with the defects of the corrosion system itself, almost all of the main suspension cable coating and capping cracking, leading to the main cable infiltration of water, endangering the main cable Safety. Runyang Yangtze River Bridge Nanxun Suspension Bridge After examining the main cable anti-corrosion technology of many similar bridges both at home and abroad, the new anti-corrosion technology of Nippon Steel Corporation was introduced and adopted for the first time.