钢桥节点的腐蚀磨损交互作用研究  

CORROSION-WEAR INTERACTION OF STEEL BRIDGE JOINTS

作　　者：程海根[1] 刘祥基 

机构地区：[1]华东交通大学土木建筑学院,南昌330013 [2]武汉铁路职业技术学院铁道信号工程学院,武汉430200

出　　处：《钢结构》2017年第7期111-114,59,共5页Steel Construction

基　　金：国家自然科学基金资助项目(51368018)

摘　　要：以建筑用Q345B钢通过M16高强螺栓连接,蒸馏水为参比介质,研究钢桥连接节点在常见服役环境空气、酸雨、海水中的摩擦学行为。结果表明,以干燥空气中的磨损量作为纯磨损量可能出现腐蚀磨损"负"交互作用。在酸雨和海水环境中磨损且初始预拉力比较小时,腐蚀磨损交互作用是引起材料磨损的主要原因;当初始预拉力比较大时,机械作用是引起材料磨损的主要原因;随着初始预拉力的变化,Q345B钢表面硬度变化与表面磨损量变化趋势相似,造成表面硬度这种变化规律的原因是磨损对表面起了加工硬化的作用。The paper studied the tribolngy behavior of the joints of steel bridges served in common environment air and acid rain and water through connecting the steel construction steel Q345B by M16 high-strength bolts and taking distilled water as referenee medium. The results shuwed that the amount of abrasion in the dry air as pure wear woahl produce a ＂ negative＂ interaction. Under＂ the abrasion environment caused by acid rain arnt sea water＇, when the initial pretension was small, the interaetion of corrosion and abrasion was the main cause of material abrasion; when the initial pretension was larger, the mechanical action was the main reason of material abrasion. With the change of the initial pretension, the change in Q345B steel surface hardness was similar to the freud of surface wear. The reason of the change law of surface hardness was that the abrasion had a hardening effect on the surface.

关 键 词：高强螺栓 钢桥节点 Q345B钢 腐蚀磨损 交互作用 

分 类 号：U445.73[建筑科学—桥梁与隧道工程]