Abstract

The critical penetration depth and failure displacement of vertically loaded anchor (VLA) have already been investigated. However, only few investigations focused on the double-plate VLA. Therefore, based on the finite element method, the critical penetration depth for the double-plate VLA was obtained, which is approximately 6.0 times the width of the upper fluke of the double-plate VLA. According to the reduced-scale model tests, the failure displacement of the double-plate VLA with different included angles and dimensions of the bottom fluke under shallow-embedded and deep-embedded conditions was obtained. Furthermore, the failure displacement of double-plate VLA with 30° included angle and the dimension of bottom fluke equal to that of upper fluke under shallow-embedded and deep-embedded condition is 0.29 and 0.67 times the width of upper fluke, respectively. Based on the empirical bearing capacity formula for VLA model, an improved bearing capacity formula for double-plate VLA model has been put forward; by means of the improved bearing capacity formula, the coefficient of bearing capacity for double-plate VLA under shallow-embedded and deep-embedded condition is obtained to be 5.013 and 4.106, respectively.

摘要

已经研究了垂直加载锚（VLA）的临界穿透深度和破坏位移。然而，只有少数研究集中在双板 VLA。因此，基于有限元法，得到了双板VLA的临界穿透深度，约为双板VLA上爪宽度的6.0倍。通过缩小模型试验，得到了双板VLA在浅埋和深埋条件下不同夹角和底爪尺寸的破坏位移。此外，在浅埋和深埋条件下，30°夹角的双板VLA的破坏位移为0.29和0。分别是上爪宽度的 67 倍。在VLA模型经验承载力公式的基础上，提出了改进的双板VLA模型承载力公式；通过改进的承载力公式，得到双板VLA在浅埋和深埋条件下的承载系数分别为5.013和4.106。