软基台后路基填土对桥台桩基侧向影响的试验研究

Experimental study on lateral influence of embankment construction on piles in soft clay

摘要: 基于现场测试试验,获得了台后路基填筑前后桥台桩基应力变化的第一手资料;根据测试结果求出了基桩在台后填土前后基桩的弯矩。结果表明,在过渡段填筑之前,远处路基填土已在桩身产生了弯矩;在过渡段填筑期间,基桩弯矩随填土高度的增加而增加;过渡段路基填筑完毕,基桩弯矩也停止了增长。所得结论有助于进一步认识台后填土对桥台桩基侧向影响规律。

Abstract: Based on in-situ test,the original data of the piled bridge abutment before and after the embankment construction were obtained.The bending moment of piles were calculated before and after embankment construction.The results indicated that before constructing the transitional roadbed the bending moment was produced in piles and would increase along with the increase of height of the transitional roadbed and it stopped to increase after the embankment construction was finished.The results are helpful to understand the lateral influence of piles.