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。
; M8 `3 Y8 }( h/ R7 P/ ^( [+ W接触过一些资料,比如什么时候不适用耐候钢& K* f4 i8 z3 G$ A$ F) H8 E+ Q
• 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。( S! Y! E- G. _# C( s X+ g
• 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。
" _ Z% W# {- k% l( |; l2 G• If the steel is in direct contact with timber decking; timber retains moisture and may have been treated with corrosive preservatives.
- B* z: }' E3 v2 V1 B9 z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。2 \1 Z+ D- r' M- W: B) {5 b) C6 T, H, W) w
• 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.! v) b9 q& m3 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。
: w- c3 ^ }4 B2 [$ g• If the location has high rainfall and humidity or is constantly wet. This situation is rare in Texas.
+ ^" S# _# w1 [% ?- W4 u如果该桥址有高雨量和湿度,或者是长久潮湿。
% T: d; F9 k; j5 j& l% D; o• If the structure provides low clearance (less than 8 to 10 feet) over stagnant or slow-moving water.- ~6 y, m4 \) [! p8 B
•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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