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Synergistic effect of a new wedge-bond-type anchor for CFRP tendons

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Journal of Central South University 2015年第6期22卷 2260-2266页

作者：谢桂华刘荣桂陈蓓李明君石天罡 Faculty of Civil Engineering and mechanics Jiangsu University

In order to improve the anchoring force of anchors for carbon fiber reinforced polymer(CFRP) tendons further, a new wedge-bond-type anchor for CFRP tendons was developed. The increment in anchoring force induced by the clamping segment of anchor was studied. Taking the deformation of all parts in clamping segment in the transverse direction into consideration, the calculation formula for the increment of anchoring force was proposed based on the linear elastic hypotheses. The proposed model is verified by experiments and conclusions are drawn that the anchoring force is influenced mainly by the inclination angle of clamping pieces, the length of clamping part and the thickness of bonding medium. Especially, the thickness of bonding medium should be lowered in design to improve the synergistic effect of anchors.

关键词： carbon fiber reinforced polymer anchor wedge-bond-type synergistic effect elastic mechanics

Study on determination of the stable slope configuration for deep open pit mine

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第9期9卷 1208-1213页

作者： Nai-long ZHU Shi-xiong ZHANG Shu-yu YUE School of Civil Engineering and Architecture Wuhan University of Technology Wuhan 430070 China School of Resources and Environment Engineering Wuhan University of Technology Wuhan 430070 China

The space effects of deep pit slope are analyzed by an elastic mechanics principle. The interaction among the critical slide angle, the friction coefficient, the cohesion, and the horizontal radius of the deep pits is derived in this paper. It indicates that the deeper the pit is excavated, the greater the critical slide angle is. Both the theory for reducing stripping waste rock in deep pit and the approach to determining the configuration of the stable slope are developed from the interaction. The theory in this paper comprises the preceding principles of stability analysis of slopes and is suitable for analyzing that of deep pit.

关键词： elastic mechanics Deep pit Slope stability Critical slide angle Ratio of stripping-to-ore

Determination of the Stable Slope Configuration of Oval-Shaped Furrow Pits

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Journal of Wuhan University of Technology(Materials Science) 2004年第1期19卷 86-88页

作者：朱乃龙 Wuhan University of Technology

The space effects of oval-shaped furrow pit slopes were analyzed by the elastic mechanics *** interaction of limit equilibrium slope angle,friction coefficient,cohesion and horizontal radius of oval-shaped furrow pits has been *** oval trumpet-like rock mass is homogeneous and elastic while only loaded by its dead *** interaction indicates that the deeper an oval-shaped furrow pit is excavated,the greater the limit equilibrium slope *** the theory base for reducing stripping waste rock in an oval-shaped furrow pit and the basic way to determine the configuration of a stable slope were developed from the mentioned *** theory includes the preceding principles of stability analysis of *** with the configuration determined by traditional theory of slope stability,a great quantity of stripping waste rock can be reduced by that determined in this paper under stable conditions.

关键词： elastic mechanics oval-shaped furrow pit slope stability limit equilibrium angle ratio of stripping-to-ore