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Laboratory Study on Bamboo-Steel Cable Anchor

Author: ZhangYanJun
Tutor: ZhangHuYuan
School: Lanzhou University
Course: Geotechnical Engineering
Keywords: The bamboo reinforced composite anchor Soil sites Stress Interface Transfer law Statics performance
CLC: TD353.6
Type: Master's thesis
Year: 2009
Downloads: 80
Quote: 3
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Abstract


Geotechnical anchoring technique is to take full advantage of bolting (cable) with greater stiffness and strength of the material mechanical characteristics to strengthen or reinforce weak and broken rock mass and soil, to improve the ability of the geotechnical self stable, and ultimately achieve engineering structures stability purposes. Geotechnical Anchorage technology has become one solve the stability problems of geotechnical engineering economic, effective, fast, and simple method. Geotechnical Anchorage has been applied widely in the energy, transportation, water conservancy, as well as urban infrastructure. Into the 1990s, with the protection of soil sites accelerating process, efforts continue to increase, how will anchor technology is scientifically and reasonably applied to the soil site protection research areas to become a new topic. Soil sites is the remains of the legacy of the history of mankind to earth as the main construction material production, life and other activities, and more emphasis on the application of traditional methods of their protection. In early soil sites in Anchorage, has been the study of wood (bamboo) anchor steel bolt (cable), steel pipe anchor anchoring take into account the effective period, as well as for general volume of soil body anchor, the Dunhuang Research Institute applied to earthen sites reinforced protection of bamboo reinforced composite anchor. By the indoor the test studies bamboo reinforced composite bolt the physical and mechanical properties of the constituent materials, through the interface pullout test drawn binder strand composite bolt interfacial stress transfer and distribution law. Research methods and perspectives of the use of composite mechanics, to establish the model of the the composite micromechanics of bamboo reinforced composite bolt internal system equivalent, mechanical balance through the interface of component materials, the displacement is continuous and so determined on the basis of the assumed composite bolt The internal mechanical transfer model. ANSYS binder with contact surfaces the unit analog bamboo composite anchor strand interfacial mechanical transfer law, to verify the correctness of the experimental and theoretical analysis. This article by laboratory experiments come to the specific strength of bamboo for 5 times the steel pipe mechanical properties of lightweight, high strength, modulus of elasticity close to within elastic modulus of the binder with bamboo bamboo plus favor The composite reinforcement bolt interlaminar shear stress transfer. By strand with adhesive bond slip curve shows that the maximum average bond stress on the interface with the bolt length of the exponential decay law. Analyzed according to the composite material mechanics theory, rods, pipe modulus of elasticity than the value of the shear stress transfer between the impact layer within the adhesive shear modulus greater impact on the stress concentration. Also by the finite element analysis derived stress, deformation transfer law entities and interface

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Roadway support > Bolt support
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