Abstract
Similar materials of rock mass and cement mortar were prepared and similar bolt was selected to study the anchoring mechanism of rock slope. Three kinds of drawing specimens with different anchoring lengths were constructed, and static drawing test analyzed the shear stress distribution on two anchoring interfaces of bolt-mortar and mortar-rock mass. The axial force decreases exponentially with the increase of the anchoring length. The shear stress of the two anchoring interfaces presents a unimodal distribution that first increases and then decreases along the anchoring length. The three stages of the anchor solid drawing processare as follows:the interface undergoes elastic deformation, plastic deformation, and debonding and slip. The shear stress distribution on the anchoring interface of rock slope is obtained for the first time by similar model tests. A new anchoring mechanism is proposed to become not only an important reference value for the related tests but also for the design and construction of the slope anchorage.
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Schedule a callMore From: Journal of Highway and Transportation Research and Development (English Edition)
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