锦州港码头施工工艺优化

传统沉箱重力式码头施工中，护舷位置在胸墙上，安装方便，施工简单；后轨道梁座于沉箱上，前后轨道梁不存在沉降差异；轨道连接以闪光对焊为主，施工效率低、质量受焊工的焊接水平影响较大；面层裂缝是码头施工中的常见质量通病，直接影响码头表观质量。以锦州港第二港池集装箱码头二期工程为例，对低高程重力式码头护舷口、沉箱背后回填棱体（后轨道梁基础）夯实、钢轨连接及胸墙面层防裂施工工艺进行了优化调整，取得良好的效果。

Optimization of construction technology of Jinzhou Port

In the construction of traditional caisson gravity wharf, the fender is located on the breast wall,which is easy to install and simple to construct;the rear track beam is situated on the caisson and there is no differential settlement between the front and back track beams;flash butt welding is the main method for track connection,with low construction efficiency and low quality welded by welders;horizontal influence is greater;surface crack is a common quality defect in wharf construction,which directly affects the apparent quality of wharf.Taking the second phase of the container terminal of the second harbor basin of Jinzhou Port as an example,we optimize and adjust the construction technology of fender,caisson backfill prism (back track beam foundation),rail connection and breast wall crack prevention for low elevation gravity wharf,and have obtained the good effect.