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某特大桥是高速公路跨越山谷的一座特大桥,主桥上部结构为(75+3x120+75)米预应力混凝土连续钢构箱粱,该桥左右分幅布置,整体式路基宽24.5米,桥粱全长为812米。桥高不受设计洪水控制,由路线标高决定,桥面至谷底约110米,山谷宽约650米,山谷地形起伏较大。桥位处岩性单一,岩体完整性较好,属微风化花岗岩且埋置较浅。桥位处属亚热带季风气候,平均气温17.8℃,基本风速V10=18.2m/s。
A special bridge is a highway bridge across the valley of a bridge, the main bridge superstructure (75 +3x120 +75) meters of prestressed concrete continuous steel box beam, the bridge left and right sub-layout, monolithic 24.5 meters wide bridge, the bridge The whole length of the beam is 812 meters. The bridge is not subject to design flood control, determined by the route elevation, the bridge deck to the bottom of about 110 meters, 650 meters wide valley, the valley topography ups and downs. Bridge site at a single lithology, rock integrity is good, is a micro-weathered granite and shallow buried. Bridge is located in subtropical monsoon climate, the average temperature of 17.8 ℃, the basic wind speed V10 = 18.2m / s.