The Research Of The Dredger's Gauge Pile Location Method

Entering the twenty-first century, the pace of reform and opening up increases constantly.The reform and opening up 1eds the domestic dredging market to have entered a new round of the golden period of development,and contributes the upgrading of dredging equipments and the rapid development of dredging marine technology.Pile positioning system is an important dredging equipment of the cutter suction dredger, and the study of it receives much attention.However, the design capability of the domestic companies is deficient very much . In order to solve practical problems, the process of setting , laying down and lifting the Gauge pile.The main contents as follows:Compare the ways of setting , laying down and lifting the Gauge pile, and a suitable method was selected;Based on the moment-equilibrium theory , analyse the process of setting , laying down the Gauge pile, and obtain the force that sets the Gauge pile up and down successfully. Finally, the required curves of the external force were drew in order to analyse the tendency of external force ;Based on the force-equilibrium theory analyse the process of setting , lifting the Gauge pile, and obtain the force that sets the Gauge pile up and down successfully. Finally, the required curves of the external force were drew in order to analyse the tendency of external force ;Analyse the maximum strained condition, and judge feasibility of the method.The fuel tank of force required in the process of the Gauge pile staking decreases gradually with the inclination increasing. In the process of staking out the pile the force provided by the fuel tank frist is thrust which decreases gradually,then the force becomes the pulling force.But in the process of the Gauge pile staking,no matter the thrust or the pull both are smaller than the force needed in the process of setting the pile. With the gauge pile rotation the force provided by the fuel tank become the pull.The angle the thrust becoming the pull is more or less 76°. The distance between the rotation point and the pile tip is distant ,The most biggest thrust is smaller ,and the most biggest pull is bigger.It is not difficult to see that the force provided by the fuel tank in the process of the gauge file setting is big,so in the choice of the fuel tank which frist should satisfy the need of the force for setting the file . Hydraulic cylinder can provide the required most strongly, that is, the use of hydraulic cylinder is feasible.