水平力作用下盘坡角对刚性扩盘桩影响的原状土试验研究

Experimental study on the behavior of undisturbed soil under the horizontal force action on the rigid expanded pile

通过原状土试验,研究水平力作用下,盘坡角对刚性扩盘桩桩周土体破坏影响,设计原状土情况下不同扩大盘坡角模型,通过制作桩土模型,进行加载试验,分析对刚性扩盘桩承载力及土体破坏状态的影响,并与ANSYS分析模型结果进行对比,验证试验结果。采用的原状土作试验,是对现有埋土模型试验方法和试验设备进行了改进和创新,实现了竖向和水平同时加载,并保证试验结果的可靠性。

Through the undisturbed soil test,the effect of slope angle plate on the soil failure of rigid expanded pile shaft under horizontal force action was studied. The model of enlarged slope angle was designed under the condition of undisturbed soil. The influence of the rigid bearing capacity and the failure state of the soil was analyzed. The results of the test were compared with those of the ANSYS analysis model. The undisturbed soil test is used to improve and innovate the existing buried-soil model test methods and test equipment,to achieve vertical and horizontal simultaneous loading,and to ensure the reliability of test results.