分层土中锚杆变形的荷载传递分析法

Load transfer method for bolt deformation in layered soil

根据锚杆与土体的相互作用机理,以弹性力学为基础,建立了拉拔荷载下锚杆锚固体与土体的受力平衡方程,在忽略土体的无旋应变下,利用锚固体和土体的变形协调和锚固体微元的平衡方程,推导出了锚固体外拉荷载与端头位移的弹性解析表达,并以此为基础,利用传递矩阵方法,计算并分析了分层土中单桩抗拔荷载和位移的关系。

According to the interaction mechanism of bolt and soil, based on the elastic mechanics, this paper established the stress balance equation, of anchor rod anchor solid and soil under drawing load. Under ignoring the irrotational strain of soil, using the deformation coordination of anchor solid and soil and the balance equation of solid infinitesimal, deduced the elastic analytic expression of anchor tensile load and end dis- placement, and on this basis, using the transfer matrix method, calculated and analyzed the relationship of single pile pull-out load and displacement in layered soil.