武咸公路改造工程灰岩区桩基设计与施工

Design and Construction of Pile Foundation in Limestone Area of Wuxian Highway Reconstruction Project

武咸公路改造工程主线高架桥全长6.9 km,其中有2.5 km桥梁处于灰岩岩溶发育区。桥梁均采用钻孔灌注桩基础,灰岩区桩基的顺利施工关系到工程整体的进度和通车目标。为此,灰岩区桩基础的设计和施工是整个工程的关键环节。

The total length of elevated bridge in Wuxian Highway Reconstruction Project is 6.9 km, in which 2.5-km bridge is located in the limestone developing zone. The cast-in-situ pile foundation is used for the bridge. The smooth construction of pile foundation in the limestone area is related to the whole schedule and opening to traffic of the project. Therefore, the design and construction of pile foundation in the limestone area are the key links of the whole project.