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一、前言 锚定板结构是我国七十年代新发展的一种轻型挡土结构。这种结构的设计必需保证其内力平衡和整体稳定。锚定板的极限抗拔力取决于两种不同的极限状态。第一种极限状态是锚定板前方土体中产生大片连续的塑性区,导致锚定板与其周围的土体发生相对位移,这种极限状态可称为局部破坏,如图1(a)。第二种极限状态是锚定板与其前方土体沿着某个与外部贯通的滑动面发生整体滑动,这种极限状态可称为整体破坏,如图1(b)。限于篇幅,本文仅就第二种极限状态予以论述,即整体破坏及与之有关的试验研究结果。
I. INTRODUCTION The anchor plate structure is a newly developed lightweight retaining structure in the 1970s. The design of this structure must ensure its internal force balance and overall stability. The ultimate pull-out force of an anchor plate depends on two different limit states. The first limit state is that a large continuous plastic zone is generated in the soil in front of the anchor plate, resulting in relative displacement of the anchor plate and the surrounding soil. This limit state can be referred to as local damage, as shown in Fig. 1(a). The second extreme state is that the anchor plate and the soil in front of it slide integrally along a certain sliding surface that penetrates the outside. This limit state can be called a total destruction, as shown in Fig. 1(b). Due to space limitations, this article only discusses the second limit state, namely the overall damage and the related experimental research results.