我亲眼见的比较少,目前为止只亲眼见到一座建筑结构采用耐候钢。
3 ^ ^8 d+ i0 p5 ]接触过一些资料,比如什么时候不适用耐候钢; {6 ^! ]7 \1 m3 V* ]
• If the atmosphere contains concentrated corrosive industrial or chemical fumes.如果大气中富含有腐蚀性的工业或化学烟雾。
- M! @3 `$ ?/ J( f% t• If the steel is subject to heavy salt-water spray or salt-laden fog.如果钢材暴露于浓度较大的盐水喷雾或含盐雾。0 ~4 w8 A+ f7 D
• If the steel is in direct contact with timber decking; timber retains moisture and may have been treated with corrosive preservatives.0 X% q; l* _0 y- t
如果钢材直接接触木桥面,木材保有水分,并可能已被防腐剂处理。
$ t2 S7 s2 k$ c! _- I, Y• If the steel is used for a low urban-area bridge or overpass that creates a tunnel-like configuration over a road on which deicing salt is used. In this situation, road spray from traffic under the bridge causes salt to accumulate on the steel.1 L6 y$ J0 f% o: N9 J }
如果钢是用在使用融雪剂的道路隧道桥或立交桥之下的城市桥梁。在这种情况下,道路交通向下方桥梁喷洒导致盐积聚在钢材上。. u1 p" ? U; M4 {# {
• If the location has high rainfall and humidity or is constantly wet. This situation is rare in Texas." _! h5 i! s9 m" V
如果该桥址有高雨量和湿度,或者是长久潮湿。
7 b: R& @ @, f7 M. v3 z• If the structure provides low clearance (less than 8 to 10 feet) over stagnant or slow-moving water.
) h9 v# Y+ p' h6 T! \•如果结构跨越死水或缓慢移动的水的净空较小(小于8到10英尺)。
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