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××河大桥设计为4孔64米栓焊梁桥,全长269.54米,共三墩两台,最高墩身高61米,共需清方挖基27559立方米,灌注墩身圬工8441立方米,见图1。大桥斜跨约40米宽的××河谷,两端紧接隧道。A台位于硅质板岩上,其他墩台均位于表层强风化的绢云母片岩上。B端山坡陡峻,下部为错落体;A端山坡较平缓,为古滑坡体,受断层切割影响,岩石风化破碎。由于桥址地质复杂,在设计单位的大力协助下,共同进行多次调查研究,先后变更设计四次,其中:两次变更桥跨及墩位布置,两次
×× River Bridge designed for 4-hole 64-meter welded beam bridge, a total length of 269.54 meters, a total of three pier two, the highest pier height of 61 meters, a total of 27,559 cubic meters of Qing dug foundation, pouring piers 8,441 cubic meters ,see picture 1. Bridge diagonal about 40 meters wide × × River Valley, both ends of the tunnel immediately. A station is located on the siliceous slate, the other piers are located in the surface of the strong weathered sericite schist. B-side steep mountain slopes, the lower part of the chute; A side of the slope is relatively gentle, as the ancient landslide body, affected by fault cutting, rock weathered broken. Due to the complex geological conditions of the bridge site, with the vigorous assistance of the design unit, the Company conducted a number of joint investigations and studies and successively changed the design four times, including: changing the bridge span and piers layout twice and twice