预应力管桩在高速公路软基处理时,可以通过桩与桩间土共同分担上部荷载,有效地提高地基承载力,减少工后沉降和减轻桥头跳车现象。本文结合具体工程实例,对预应力管桩在高速公路的应力进行了研究,经过监测结果显示,经过处理后,地基整体性变好,且在高填土下未出现失稳现象。 When the prestressed pipe pile is treated by the soft foundation of the expressway, the upper load can be shared by the pile and the soil between the piles, effectively increasing the bearing capacity of the foundation, reducing the post-construction settlement and reducing the jumping phenomenon at the bridge head. Based on the concrete engineering examples, the stress of prestressed pipe piles on expressway has been studied. After monitoring, it shows that the integrity of the foundation becomes better and the instability does not occur under high fill.