The steel-mixed composite beam of the Chaoyang Baihe Bridge on the Beijing-Qinhuangdao Expressway uses the temporary support system of steel pipe columns for cross-river construction, combined with the cofferdam diversion, giving full play to the advantages of simple temporary support and quick lifting of steel-mixed composite beams, shortening the construction period. The cost is saved and the economic benefits are significant.%京秦高速公路跨潮白河特大桥钢混组合梁采用钢管柱临时支架系统进行跨河施工,结合围堰导流,充分发挥临时支架工艺简捷、钢混组合梁吊装迅速的优势,缩短了工期,节约了成本,经济效益显著.
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