润扬长江公路大桥南汊悬索桥南锚碇基础工程监测

Engineering monitoring of south anchor cushion foundation pit in Run-Yang Changjiang River Suspension Bridge

润扬长江公路大桥是目前国内跨度最长的悬索桥,它的锚定基础也是目前国内最大的。其南锚定基础深基坑支护采用了钻孔灌注桩排桩加多道支撑挡土的排桩冻结法。介绍了对南锚碇基础基坑设计实施监测的全过程,得出了在冻结法中温度变化和冻胀力改变的规律。

Run-Yang Changjiang River Bridge is the longest suspension bridge and its anchor foundation is also the largest in China at present. New design and execution techniques are adopted in South Anchor Cushion Foundation Pit, namely freezing method of row piles. Its execution process of pit monitoring was introduced and some conclusions about temperature variation and frost boiling force were drawn under the freezing method construction.