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無梁拱--拱形屋頂(ding)的材料特性有哪些?
無梁拱--拱形屋頂(ding)結構(gou)所用的彩色鍍(du)鋅鋼(gang)板是上海寶鋼(gang)生產的型(xing)號為Ts280GD+Z結構(gou)用鋼(gang)板。
無梁拱(gong)(gong)--拱(gong)(gong)形屋頂結(jie)構有以下幾種材料性能
⑴基板(ban)的屈服(fu)強度為280Mpa或(huo)345Mpa。
⑵鍍鋅量≥180g/m2。
⑶涂層厚≥20um。
⑷耐鹽霧性能(neng)≥500h。
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