钻孔灌注桩由于它的先进性和经济性比较突出,在全国各类土建工程中均广泛应用,钻孔灌注桩有它自身的特点:桩径大、抗弯刚度高、配筋率一般较低,因此,计算桩基的承载能力,自应有适合其特点的理论和计算公式。 桩受荷后,基土与桩是相互起作用,土的特性控制着桩的性能。各地土壤因其组织成份不一,松密不同,含水各异,因而反映桩的性能就千差万别。特别是桩受水平力和弯矩作用时,对桩身内力和变位的计算更是一个比较复杂的问题,众所周知,尽管当前已提出《K法》、《M法》或《C法》等几种计算方法,而三种方法同属“基床系数法”一类,都是以弹性地 Bored pile due to its advanced nature and economy more prominent in all types of civil engineering are widely used in the country, bored pile has its own characteristics: large diameter, high bending stiffness, reinforcement ratio is generally more Therefore, calculating the bearing capacity of pile foundation should have its own theory and formula suitable for its characteristics. After the pile is subjected to the load, the soil and the pile are mutually acting, and the characteristics of the soil control the performance of the pile. Because of its different soil components around the organization, different loose, different water, thus reflecting the performance of the pile varies widely. Especially when the pile is subjected to horizontal force and bending moment, calculation of internal force and displacement of the pile is a more complicated issue. It is well known that although “K Method”, “M Method” or “C Method” have been put forward at present, Several calculation methods, and the three methods belong to the “bed coefficient method” category, are based on flexibility