深基坑开挖边坡上桥梁桩基模型试验研究

Model tests on bridge pile foundation in ship lock deep excavation slop

为研究某船闸深基坑开挖对位于边坡上桥梁桩基的影响,设计并进行了土工离心模型试验。试验分析表明:基坑开挖越深,桩基两侧土压力的差越大,使得桩顶朝基坑方向运动的水平位移也越来越大。对该模型试验测得的桩顶水平位移与原型观测值进行了对比,两者的数值相吻合,表明:土工离心模型试验可用来对相关实际工程进行模拟。该结论以期为相关工程提供借鉴和参考。

In order to study the influence of bridge pile foundation in the ship lock deep excavation slope, the geotechnical centrifuge model test was designed and the test re suits were analyzed. The deeper excavation of the foundation pit, the greater difference of soil pressure on both sides of pile,the horizontal displacement of the pile top was also increased and turned to the foundation pit. The horizontal displacement of the pile top measured by the model was compared with the prototype observation,and it was conclu ded that the two numbers were in good agreement with each other. The results show that the geotechnical centrifugal model test can be used to simulate the relevant practical engineering. The results of the above analysis were expected to provide reference for re lated projects.