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广东汕头石大桥主桥为双钢箱主梁斜拉桥,桥面系为钢正交异性桥面板,主跨518m,全长718m。钢桥面铺装为双层改性沥青 SMA 结构:铺装上层(面层)为改性沥青 SMA13B,铺装下层(保护层)为改性
The main bridge of Shantou Stone Bridge in Guangdong is a double-steel box girder cable-stayed bridge, which is a steel orthotropic bridge deck with a main span of 518m and a total length of 718m. Steel deck pavement is double-layer modified asphalt SMA structure: the upper layer (surface layer) is modified asphalt SMA13B, the lower layer (protective layer) is modified