论文部分内容阅读
在桥梁桩基施工中,经常遇到岩溶现象,特别在中国西南部,岩溶现象尤为常见。岩溶现象给桩基混凝土施工带来很大的不确定性,对施工质量和施工成本带来很大的影响。对桩基内的岩溶处理方式很多种,针对富水岩溶区域桥梁桩基施工出现的质量难以保证、施工成本偏高的问题,提出了采用管节式钢护筒的施工工艺,有效控制了桥梁桩基施工质量和成本问题,且减少对周边环境破坏与污染,并在杭瑞高速公路贵州毕节~都格段中得到了应用,取得了良好的效果,可为其他类似工程提供借鉴。
Karst is often encountered in the construction of bridge pile foundation, especially in the southwestern part of China. Karst phenomenon is especially common. Karst phenomenon brings great uncertainty to the construction of pile-based concrete, which has a great impact on construction quality and construction cost. There are many ways to deal with the karst inside the pile foundation. In view of the difficult quality assurance of bridge pile foundation construction in the water-rich karst area and the high construction cost, the construction technology of pipe-section steel casing protection is put forward to effectively control the bridge Pile construction quality and cost issues, and to reduce the damage to the surrounding environment and pollution, and in Hangui Expressway Guizhou Bijie ~ Duge paragraph has been applied, and achieved good results, for other similar projects to provide reference.