Settlement Computation Of Composite Ground With Generalized Mindlin And Boussinesq Union Solution Law

As one kind of ground reinforces the new technology, the rigid pile has many merits and its application is also more and more widespread along with the massive foundation engineering construction. But the fundamental research lagging aspect caused the rigid pile has received the restriction in actual project application and its development. From compound ground work characteristic obtaining ,this article consider the pile earth stress ratio in the union actual project, and propose jointly solves the method computation reinforcement area additional stress with the generalized Mindlin solution and the Boussinesq solution, then calculates the composite ground the additional stress and settlement. The paper concrete content is as follows:(1) This article introduces the computational method and the rationale of the composite ground settlement.(2) The calculation of the additional stress is the key of the composite ground settlement computation. At present the additional stress calculation mainly uses the Boussinesq solution, obviously the pile and the soil interact in the composite ground,this method using in the layered composite ground calculation is incompatible. This article use the method which the generalized Middlin solution and the Boussinesq solution will solve jointly to calculate the additional stress of the composite ground which the pile body loads and the earth undertaking loads produce in the composite ground.Two part of the additional stress linearly add up,then it calculates the composite ground reinforcement area settlement and the subjacent bed settlement under the center of the roadbed.(3) It uses the conventional algorithm which compute the additional stress with the complex modulus method in the reinforcement area and the equivalent substantive law in the subjacent bed to compute the settlement under the roadbed center and compare with the union solution law computed result.(4) The union solution law and the conventional algorithm compute the additional stress of the composite ground with the different pile distance of 3.0 meters,4.5 meters and 6.0 meters.The results compare with each other.The article analyses the influence of the different pile distance in the additional stress and the settlement of the composite ground.