摘要
不同施工工艺决定了工程施工相应的成本、效率,而地质变化对施工工艺选用之影响最为直接。文章结合四川南充嘉陵江特大桥工程实例,介绍了该桥左线施工段桩基础施工所采用的旋挖钻机钻进、冲击式钻机钻进及人工挖孔三种施工工艺及其特点,并分析该施工段地质变化对这三种施工工艺的影响,提出了地质变化情况下各工艺的选用原则。
Different construction techniques determine the appropriate construction cost and efficiency,and the geological change has the most direct impact on the selection of construction techniques.Com-bining the engineering practices of Nanchong Jialing River Super-large Bridge in Sichuan,this article described three construction techniques and their characteristics used in the pile foundation construc-tion of left line construc-tion segment in this bridge,namely the drilling by rotary drilling rig,drilling by percussion drilling rig and man-ual hole-digging,analyzed the impact of geological changes in this con-struction segment on these three construction techniques,and proposed the selection principles of va-rious techniques under the conditions of geological changes.
出处
《西部交通科技》
2014年第12期6-9,共4页
Western China Communications Science & Technology
关键词
桥梁工程
地质变化
桩基础
施工工艺
选用
影响
Bridge engineering
Geological changes
Pile foundation
Construction technology
Selection
Influence
