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随着市政基础设施工程城市高架桥不断兴建,对高架桥桩基施工要求不断提高,施工方法不断改进。对于市区易坍塌地质旋挖钻钻孔灌注桩施工,为确保文明施工满足要求,且不便砌筑泥浆池的情况下,选择最佳施工方法即加长钢护筒辅助旋挖钻干挖成孔法,明确该方法的施工工艺控制要点及措施,并分析该施工方法的特点。
With the continuous construction of urban infrastructure viaduct project, the viaduct pile foundation construction requirements continue to improve, construction methods continue to improve. For the construction of easily collapsible geological rotary drilling bored piles in urban areas, in order to ensure the civilized construction to meet the requirements, and difficult to masonry mud pool case, choose the best construction method that is extended steel casing auxiliary rotary drilling dry hole digging Method, clear the method of construction process control points and measures, and analyze the characteristics of the construction method.