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文章利用Ansys有限元程序模拟现场平板载荷试验,通过选用不同弹性模量的承载板模拟地基上加载刚性荷载和柔性荷载的情况。在对两种载荷加载后所获得的地基的P-S曲线以及地基中塑性区发展情况进行比较分析后发现:对于同一地基来说,不同性质的荷载造成的地基破坏类型是不一样的,地基中塑性区域的开展情况也不相同。当载荷性质不同时,根据平板载荷试验所获得的P-S曲线确定出的承载力也不相同。从而说明对于属于柔性载荷的公路路堤来说,利用平板载荷试验评价其下的地基的承载力是不合适的。
In this paper, the Ansys finite element program is used to simulate the on-site flat-panel load test. The rigid-flexible and soft-loaded loads on the foundations are modeled by using the bearing plates with different elastic modulus. After comparing the PS curve of foundation and the development of plastic zone in the foundation after loading two kinds of loads, it is found that the types of foundation damage caused by different kinds of loads are different for the same foundation. The plasticity Regional development is not the same. When the load properties are different, the bearing capacity determined by the P-S curve obtained from the plate load test is not the same. Therefore, for the embankment of highway under flexible load, it is unsuitable to evaluate the bearing capacity of the foundation under the flat load test.