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为了反映桩基真实的工作状态。就必须考虑土和桩的塑性变形。然而,至今对埋置于非线性变形地基中桩的计算,还缺少一种简单可靠的方法。下面提出一种解决上述课题比较简单的方法,这方法并能确定土和桩的塑性工作状态及桩横截面剪应变对结构强度和变形的影响。桩柱式墩的土的抗力用随深度而变化的地基反力系数来表示。其计算图式采用有限个点的弹性支承多跨来表示。每个弹性支承模似了紧贴支承那部分土的刚度(图1)。
In order to reflect the true working status of pile foundation. We must consider the plastic deformation of soil and piles. However, to date, there is a lack of a simple and reliable method to calculate the pile embedded in the nonlinear deformation foundation. In the following, a simple method to solve the above problem is proposed. The method can also determine the plastic working condition of soil and pile and the effect of shear strain of pile cross-section on structural strength and deformation. The resistance of the soil of the pile pier is expressed by the reaction coefficient of the foundation which varies with the depth. Its computational scheme is represented by a finite number of flexible supports and multiple spans. Each elastic support pattern resembles the stiffness of the soil adjacent to the support (Figure 1).