Experimental analysis of the Influence of different factors on local erosion of stone arch bridge foundation
For the purpose of studying the influence of various factors on the local erosion of the foundation of the ancient stone arch bridge-the Buying Bridge-the hydrological conditions of the river where the bridge is located were examined.Different forms of sacrificial piles in front of the bridge piers were laid out,and a comparative test method was proposed for the changes in erosion pits around the piers before and after the reinforcement of the foundation of the said bridge,inclu-ding triangular,rectangular,and circular sacrificial piles.Under flood conditions,erosion tests were conducted with non-identical spacing of sacrificial piles in front of the triangular bridge piers.These sacrificial piles were placed upstream of the Buying Bridge model to attain the following objectives:change the flow field,reduce the erosion force of water on the bridge piers,and achieve the effect of decreasing local erosion of the bridge pier foundation.Consequently,the depth of the erosion pits was effectively cut down,similar to the time required for the erosion depth to reach equilibrium conditions,resolving the threat of flood erosion to the ancient bridge.
local erosionsacrificial stakebridge pier foundationerosion depth
万方数据
维普
