浅层气对桥梁桩基的影响及其对策研究  

Research on Influence of Shallow-Buried Natural Gas on Pile Foundation of Bridge and its Countermeasures

作　　者：叶俊能[1] 李国军[2] 

机构地区：[1]杭州湾大桥工程指挥部,宁波市315327 [2]中铁十九局集团有限公司,辽阳市111000

出　　处：《公路》2008年第12期61-64,共4页Highway

摘　　要：在研究杭州湾区域浅层气的成因及特征基础上,分析浅层气对桥梁桩基的影响,提出钻孔灌注桩施工中浅层气灾害防治的整套对策,包括浅层气预排放、加长钢护筒和改进钻孔工艺等有效的技术措施,确保杭州湾跨海大桥桩基工程的施工安全和工程质量。The formation cause and distribution of shallow-buried gas in the area of the Hangzhou Bay are studied in the paper, and the influences of shallow-buried gas on the pile foundation of bridge are analyzed. Then, the corresponding countermeasures on prevention and cure of the shallow-buried gas disaster during the construction of the bored cast-in-place piles, such as the pre-releasing of the gas, lengthening the steel guarding pipe, ameliorating the construction technology ,and so on. The construction safety and the quality of the pile foundation of Hangzhou Bay bridge are assured through the present study.

关 键 词：桥梁施工 钻孔灌注桩 浅层气 对策 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]