2. One group of piers across the Yangtze River was constructed: multiple-column frame steel structure, the pile foundati

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2 One Group Of Piers Across The Yangtze River Was Constructed Multiple Column Frame Steel Structure The Pile Foundati 1 (162.91 KiB) Viewed 10 times

2. One group of piers across the Yangtze River was constructed: multiple-column frame steel structure, the pile foundation were used for one of the columns as shown in the figure below, allowable differential settlements of two columns [AS]=0.055m. After a few years, the differential settlement was minitored, [AS]=0.19m, and the skeleton frame started to be fractured. Loading tests had been conducted and ensured that the bearing capacity of soil and rock satisfy the deign requirement. (1) Please analyze the main reason of the significant differential settlement between the two columns? (2) And how to prevent this problem in a practical project? Bridge pier column Pile foundations Rock Newly filled soil