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一般钢材,因其强度和加工性能上的优点而被广泛地应用于各种构件之中,但它存在容易锈蚀的缺点.近年来,开始用焊接性能和加工性能较好的耐候钢制造桥梁,使用时不涂油漆.到1983年修订了《JIS G3114焊接用耐候性热轧结构钢》标准,无涂装用钢材标准化以后,建造了许多无涂装桥梁(即不涂油漆的桥梁).这种无涂装桥梁所使用的耐候钢表面虽然也有的进行了(防锈)稳定化处理,但一般情况下是不经处理而直接使用。后者我们把它叫做裸用桥梁. 本委员会为了进一步普及耐候钢桥梁,对无涂装桥梁的标准化问题做了各方面研讨.这个报告书归纳、汇集了耐候钢裸用桥梁的现实情况.
General steel, because of its strength and processing advantages, has been widely used in various components, but it has the shortcoming of easy rust. In recent years, began with the welding performance and processing properties of good weathering steel bridge, No paints were used, and in 1983, the JIS G3114 standard for weatherable hot-rolled structural steel for welding was revised and many uncoated bridges (ie unpainted bridges) were built after the standardization of uncoated steel. Although the surface of weathering steel used for uncoated bridges is also stabilized (rust-proofed), it is generally used without any treatment. The latter, which we call a bare bridge, was discussed in various ways by the Commission to further standardize the problem of uncoated bridges in order to further popularize the weatherable steel bridges, a report that brings together the reality of bare bridges on weathering steels.