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1工程概况云溪河桥位于济（青）环（海）公路某公里处，该桥为7孔13m空心极梁桥，钻孔桩基础，桩径为1．2m，桥墩桩长18.803m，桥台桩长为19．393m。全桥共64根桩，其中桥墩有48根，桥台有16根。2施工技术与分析（1）孔规的使用该工程采用回转钻机正循环成孔，成孔后采用孔规检
1 Project Overview Yunxi River Bridge is located in the economic (green) ring (sea) highway kilometers, the bridge is 7 holes hollow girder bridge 13m, bored pile foundation, pile diameter of 1.2m, the length of the bridge pier 18.803m, Bridge abutment length of 19.393m. The bridge a total of 64 piles, of which there are 48 piers, abutment 16. 2 Construction Technology and Analysis (1) the use of hole gauge The project is a rotary drilling machine is recycled into the hole, the hole after the hole using the standard inspection