Analysis of force and displacement of anchor systems under the non-limit active state

Abstract

This paper proposes a concept of soil shear strength exertion around an anchorage section to analyze and calculate the anchor’s force and displacement. First, based on the Mohr stress circle, the numerical relationship between the value of the internal friction angle exertion, the value of the cohesion exertion, and the displacement are established under the non-limit active state. According to the interaction mechanism between the anchorage section and the surrounding soil, this paper obtains the corresponding relationship between the value of the soil’s shear strength exertion and displacement under the non-limit active state. Then, according to the load transfer principle of the anchorage section, the basic differential equation is established. The differential equation of the relative displacement distribution along the length of the anchorage section under the non-limit active state is further derived. And the calculation and analysis formula of the shear stress and relative displacement in the anchorage section considering the process of the soil shear strength exertion is also obtained. Finally, this paper compares the calculation method with the hyperbolic model calculation method for the same example. The results verify the accuracy of the calculation method.

Application of infrared thermography for estimating residual stress in ground anchors for maintenance

“…Ground anchors provide a high load capacity for stabilizing soil structure in constructions on slopes, and regular inspections are required to estimate the performance in deteriorating and aging anchors 1 , 2 . The lift-off test is generally used to estimate the residual stress of anchors 3 , 4 , wherein the anchor head is pulled out using a hydraulic jack, however, this method has limitations in application as it is expensive and time consuming 5 .…”

Application of Infrared Thermography for Estimating Residual Stress in Ground Anchors for Maintenance

“…Ground anchors provide a high load capacity for stabilizing soil structure in constructions on slopes, and regular inspections are required to estimate the performance in deteriorating and aging anchors (Lo et al 2016;Fang et al 2022). The lift-off test is generally used to estimate the residual stress of anchors (Saleem and Hosoda.…”