薄壁管桩在高速公路软基处理中的应用

Application of cast-in-situ concrete thin-wall pipe piles in soft soil improvement of expressways

结合现浇薄壁管桩在盐通高速公路软基加固中的应用,对管桩施工方法和承载特性进行了分析研究,并进行了小应变测试、静载荷试验和现场开挖等检测分析。工程实践应用表明,薄壁管桩施工方便,承载力高,成桩质量可靠,具有较大的应用推广价值。

The construction process and load-bearing characteristics of cast-in-situ concrete thin-wall pipe piles have been analyzed based on their application in soft soil improvement of Yan-Tong Expressway. The low strain test, static load test and excavation also have been performed in-situ. It can be concluded that the new style pile is convenient to be constructed with high bearing capacity and reliable quality. It is expected to be applied in ground improvement with great prospect.