Researrch On Strengthening Technology And Calculation Methods Of The New Type Disc Anchor

Rock & Soil Anchoring technology is an important branch of the modern geotechnical engineeringfield.Anchor is widely used in hydraulic structures,high -rise structures,deep excavation , anti-overturning structures and slope reinforcement. But the pull-out resistance of traditional anchor mainly are provided by its own friction force. This paper mainly research plate-resistant anchor , discusses its stress mechanism and the related computational method, main contents as follows:1. Through model testing method to study the failure model of the anchor , under the assigned soil texture condition discusses the change rule of anti-pulling of anchor ,which along with laying depth, the anchor plate diameter as well as the anchor plate spacing of the anchor plate. Analyzed the anti-drawing failure mechanism of the plate-resistant anchor; According to the experimental result determined its failure model under the different project condition when single disk or double disk.2. Moreover, the earth around is regard as an elastic semi-infinitemass ,through the integral that based on Mindlin displacement solution for layered ground,obtains displacement equation of compatibility and the force balance equation between the anchor and earth.But, the scope of the discussion is limited to normal work load , this time the stress of the soil around the anchor is also at the elastic stage . Under the load function discussed the relative displacement relates between the anchor and the soil ; Studied the anti-pullout the mechanism of the group anchor, in the cases of considering the group anchored in the single-anchor of the interaction between the circumstances, studied the side friction distribution of anchor uander group anchor in the different anchor rod quantity, the different anchor plate spacing, as well as the anchor rod in the group anchor the different position.3. Based on the study of the load-displacement relationship under the anchor,s limit state, take the mole - coulomb theory as the basis, using the slide limiting equilibrium theory derived the methods for calculating uplift bearing capacity of the plate-resistant anchor . Oobtained the result with this method computation the conclusion which basic tallies with the field test result.4. To further testify the home position test result, analyse by the ANSYS of the finite element software anchor plate,and contrast with the test results. Under the load function discussed anchor,s stress characteristic, distortion rule and with soil body between function attribute and destruction pattern, its result with experimental result basic consistent,the rusult basic tallies with the field test result.