沉井基础是一个井筒状的结构物，它是从井内挖土、依靠自身重力克服井壁摩阻力后下沉到设计标高，然后采用混凝土封底并填塞井孔，使其成为桥梁墩台或其他结构物的基础。沉井基础的特点是埋置深度可以很大，整体性强、稳定性好，有较大的承载面积，能承受较大的垂直荷载和水平荷载；沉井既是基础，又是施工时的挡土和挡水的围堰结构物，施工工艺并不复杂。
试验结果表明，根键对提高沉井基础竖向承载力效果明显。
The results of the tests indicate that the effect of the vertical bearing capacity of the caisson foundation improved by the studs is significant.
泰州长江公路大桥为三塔两跨悬索桥，两岸锚碇采用沉井基础。
Taizhou Changjiang River Highway bridge is a three tower suspension bridge and the anchorages of the bridge on both Banks rest on caisson foundations.
最后用几何优化法对泵房沉井基础的工程费估算作了应用性探讨。
Finally, the original cost estimation of open caisson pump house is made with the geometric optimization.
应用推荐