Research On The Mechanism Of Self Adaptive Anchor Rope In Slope Engineering

Anchor technology has a long history,in recent years,the development of slope anchor technology is advancing by leaps and bounds,the variety and anchorage mechanism of anchor cable also show diversity.Many projects have solved lots of problems by optimizing the design of anchor cable materials and their own devices.Among the many anchor,the yield type anchor cable,which can effectively consume energy,reduce the displacement of the slope,reduce the axial force of the anchor cable,and coordinate the maximum extent of the anchor group to prolong the life of the anchor cable,has gradually attracted people’s attention.Based on the project "2.5D anchored slope dynamic stability and adaptive mechanism of the seismic cable" of the National Natural Science Fund,we install a sliding sleeve at the front end of the general tensile anchor rope to manufacture a plastic phase of the anchor rope artificially.and an adaptive anchor cable which can change its length under a certain force condition is obtained.Finite element software Midas/GTS is applied to Simulate a adaptive slope anchor,analyse the anchoring effect and working state of adaptive anchor cable by adaptive variable load and different anchorage prestress,and through the axial loading of the adaptive anchor rope,the force mechanism of the anchor cable is investigated,so that we can make analysis and summary,the main contents are as follows:(1)The development process of anchor technology is briefly introduced,and the present research situation of yielding anchor cable is expounded.The research results of anchor reinforcement slope at home and abroad are summarized.(2)The types of slope failure and the factors affecting the slope stability are introduced,According to different slope conditions,the specific application range and calculation process of limit equilibrium method,numerical calculation method and other methods commonly used in slope stability calculation are discussed.At the same time,the slope anchor system widely used anchor type and anchorage capacity optimization analysis,and expounds the working principle,design and Realization of Adaptive Cable simulation scheme.(3)This paper also introduces the application scope and characteristics of Midas/GTS finite element software in geotechnical engineering,and compares the advantages and disadvantages of finite element software for analyzing slope stability on the market.According to one side slope project,the slope stability is analyzed by using the limit equilibrium,and the anchorage system is designed reasonably.The designed anchor slope is simulated by GTS software.(4)Through the contrast of the adaptive anchor cable and the ordinary anchor rope,the restraint of the slope displacement and the distribution of the anchor’s own force during the slope reinforcement are analyzed,and the validity and practicability of the adaptive anchor cable are also analyzed.At the same time,by means of loading the top of the slope,changing the prestressing force of the anchor cable and increasing the axial tension of the anchor rope directly,the axial force of the anchor cable is changed from different angles and ways,therefore,the failure state of the anchor slope is determined and the force change characteristics of the anchor cable are verified.