Study On The Application Of Pre-stressed Anchor (Cable)with Lattice Beam In The Slope Project

Along with the development of economy and science technology of our country,project development and constructiondevelop like a raging fire in many areas.At the same time,slope engineering has increased every year and the cost of slope disasters because of the construction,management and development is very high,so studying on the slope supporting measures has important practical significance.The pre-stressed anchor(cable)lattice beam is a new slope protection measures,as a flexible composite retaining method it can not only strengthen unstable slope deeply also can take account of the shallow layer protection,and the reinforcement effect is safe and reliable,convenient and can combine with the greening engineering,slope landscaping,ecological environment protection,so the application in slope engineering is very extensive.But at present,the study on pre-stressed anchor(cable)of lattice beam behind of the widespread application,this paper will study based on an excavation slope management project that fixed by the pre-stressed anchor(cable)lattice beam through the combining method of theoretical research and numerical simulation.The main research contents are as follows:(1)Firstly elaborated the development process and the theoretical research and engineering application of thepre-stressed anchor(cable)lattice beam in the domestic and foreign,and discussed characteristics and function of various lattice construction,and concludedthe advantages of pre-stressed anchor lattice beam compared to the traditional branch support method and then discussed the applicable conditions of the structure.(2)Through the theoretical research on the pre-stressed anchor(cable)lattice beam of the past,analyzing the mechanism of the structure from three aspects.Discussing the method to chouse design parameters of pre-stressed anchor(cable)lattice beam and talking about the basic theory of beam calculation.Respectivelyelaborated the determination method of anchor-holding force of anchor bolt,length of anchorage section and anchor space,and then discussed the principle of selection of the optimal anchoring angle.(3)Based on the research of above,according to the present situation of the slope choosing pre-stressed anchor(cable)lattice beam supporting method to reinforce the SaiBao resettlement housing environment slope,and giving the specific supporting design plan and establishing FLAC3 D analysis model with regional typical section,and analyzing the situation of slope before and after the support.The distribution of Stress and displacement and mechanical characteristics of the slope were analyzed,showing the effect of the reinforcement on the slope's stress and strain field,at last calculating the slope's safety coefficient by the method of strength reduction.(4)It can be confirmed that the pre-stressed anchor lattice beam has good reinforcement effect through the calculation of the deformation of the slope.It is very effective to improve the safety of the slope.By the comparison of the effect between pre-stressed bolting used alone and pre-stressed anchor lattice structure combined support.The result verified the good performance of the anchor lattice composite reinforcement measures,in order to provide relevant reference to design of practical engineering.