本文结合日本西高岛平高架桥下部工程施工实际,介绍了“压入开口沉箱施工法”。该施工法的基本原理是:在沉箱体沉放之前,预先在地中设置地锚。利用油压千斤顶张拉地锚,将地锚的抗力传给反力梁,变成压入力,作用于沉箱体,使其下沉。该施丁法具有能在狭小的作业带中进行施工,不扰动周围地基等优点。 Based on the actual construction of the lower part of Xigao Island viaduct in Japan, this article introduces the “Caving Open Caisson Construction Method”. The basic principle of the construction method is: Before sinking the caisson body, the anchor is set in the ground in advance. The use of hydraulic jack tension to the anchor, the resistance of the anchor to the reaction beam, into the pressing force, acting on the caisson body, so that it sinks. This method has the advantages of small work in the construction zone, without disturbing the surrounding foundation.