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排调河1#特大桥为厦蓉高速公路贵州境榕江格龙至都匀段的关键性控制工程之一,桥址位于贵州省黔南州三都水族自治县打鱼乡来术村南约300米处,为路线跨越排调河河谷的一座高架桥,所属地区为亚热带季风温湿气候,剥蚀侵蚀的中低山地貌区,年平均气温为14.3度,年均降水1349.5毫米,桥址处地质条件较差,主要以第四系全新统坡积亚粘土、冲洪积的卵石土层及元古代的板岩组成,由于区域降水充沛,故雨季发生洪水、滑坡、崩塌等自然灾害可能性大。笔者就桥梁的施工测量放样及线形控制等相关问题进行阐述。
Pai Tiaohe 1 # Bridge is a key control project of the Ronglongjiang Glacier to Duyun section of the Xiamen-Rongzhou Expressway in Guizhou Province. The site of the bridge is located in the south of the village of Shuidao, Dayue Village, Sandu Shui Autonomous County, Qiannan Prefecture, Guizhou Province. 300 meters for the route across the drainage river valley an Viaduct, belonging to the subtropical monsoon climate, denuded erosion in the low mountain landscape area, the annual average temperature of 14.3 degrees, the average annual rainfall of 1349.5 millimeters, the site of the geological The conditions are poor, mainly composed of Quaternary Holocene alluvial clay, alluvial pebble stratum and Proterozoic slate. Because of the abundant precipitation in the region, there is a high possibility of natural disasters such as flood, landslide and collapse in the rainy season . The author expounds the related problems such as the lofting and linear control of bridge construction measurement.