The Research And Application Of Soft Soil Stratum Anchorage And Its Recovery Mechanism

The rapid development of China's economy take a major opportunity for the development of anchoring technology,rock soil anchoring technology is also faced with energy saving and environmental protection and city planning requirements of sustainable research,geotechnical anchoring technology is imminenting.The papers were reviewed on the soft soil anchoring technology,a detailed analysis of the factors affecting the performance of Recyclable anchor,on a new type unlock Recyclable bolt is studied.The stiffening anchor pile anchor bar recovery by expanding bottom pile diameter and stress dispersion,which can provide high anchoring force in the soft soil layer,double disc anchor double anchor(phi 15.2)the maximum anchorage force of anchor pile up to 440kN;anchor bar with high recovery rate,the maximum can reach 100%,anchor bar is recovered can be used again,making full and efficient use of resources and overcomes the anchor for the later development of underground space of obstacles,to achieve sustainable development;and the construction efficiency of anchor high labor intensity,can recover the anchor construction did not bring too complicated construction procedure the recovery and ingenious methods,reduces the manpower cost.According to the analysis of the construction process and test results,see the many advantages of recovering bolt,also puts forward some suggestions for improvement.The need to pay more attention to the construction and recovery process,such as isolation to prevent casing damage,prevent mechanical damage of anchor bar operation;the anchor plate anchor pile anchor plate hole and anchor plate layout method is proposed.This new type of anchor Recyclable unlock application,suitable in soft soil area and recovery anchor project demand vigorously promoted.