High Slope Prestressed Anchor Rope Pile Supporting Structure Research On Defect Analysis And Risk Control

In the increasingly scarce construction land conditions,many projects can only be obtained through the excavation of the required land,in order to ensure the safety of structures,often need to support high slope.In this article,several methods commonly used in slope support and their advantages and disadvantages are briefly described.The prestressed anchor cable pile method,which is commonly used in high slope support engineering,is introduced and its development history and research status are carried out as a brief description.In this article,a large slope support project in Lipu,for example,through the use of FLAC3 D finite difference software to simulate the excavation process to discuss the reasons for the failure of the slope support project,the proposed high slope support construction and maintenance Need to pay attention to the problem.Finally,the stability of the slope is calculated and analyzed.The main contents and achievements of this paper are as follows:(1)The displacement and stress changes of prestressed anchor cable struts during slope excavation are analyzed,and the factors of internal and external factors are analyzed.And the prolonged torrential rain provides favorable conditions for the overall slump of the supporting structure,but the improper construction and other human factors cause the stress of the supporting structure to be concentrated,leading to the first occurrence of the clipping of the #51 support pile and the initiation of the chain reaction.The main reason for the overturning of the support structure.(2)he prestressed anchor and the support row pile together bear the active earth pressure after the pile,and the support row piles bear most of the soil pressure.The prestressed anchor cable is composed of indirect and supporting rows of piles to form the organic whole.With the increase of the number of prestressed anchors,the prestressed anchor cable is carrying more and more active earth pressure,and the supporting pile The force is more and more uniform,weakening the support pile stress concentration phenomenon.(3)The influence of 15%,30%,50% and 100% of the bearing capacity of only 51 #support pile on the overall stability of the support structure is discussed.It is found that with the weakening of the bearing capacity of the 51 # support pile,the displacement of the soil outside the 51 # supporting pile is gradually increased,and the change of the whole stress and the increase of the displacement of the support structure are caused.(4)The influence of 50 #,51 # two adjacent support piles on the overall stability of the support structure is affected by the loss of 15%,30%,50% and 100% at the same time.When the bearing capacity of the two supporting piles is weakened,the influence of the bearing capacity of the two supporting piles is weakened and the influence of the support capacity of the single supporting pile is greater than that of the whole structure.(5)The phenomenon of overturning will occur in the construction of the project,and the stress change of the prestressed anchor cable pile will be discussed.It is found that the prestressed anchor and the waist beam will strengthen the support structure,Or will lead to the overall support structure,especially 51 # and its adjacent support pile lateral soil displacement increases,increasing the overall structure of the possibility of slipping.(6)The results show that the 2-2 'section is unstable in the state of heavy duty and heavy rain,and it is suggested that the relevant units should be treated.