Research And Application On Controlling Of Section’s Elastic Deformation In Ship Rapid Embark

With the deep impact of the world financial crisis, as well as the European debt crisis,ship financing constraints, shipbuilding industry has “complex situation”, shipping cost andspecification requirements in rising, the price has hit a record low, ship manufacturingenterprises interests are ongoing compression. Now China appears the dilemma that smallshipyards did not fall to the ground and big shipyards difficult to maintain. Manufacturingprocess analysis technology from the ship is the major factor limiting the productivity. Theshipping enterprises in our country, to improve the production efficiency and shorten theshipbuilding period is the main way for China shipbuilding industry walk out ofpredicament, and enhance the competitiveness of. This paper mainly studies the carryingship quickly how to control segment elastic deformation, period to reduce the segmentalhoisting and shorten the time of shipbuilding.This paper first summarizes technology and advanced measurement technology relatedthe rapid embark, provides the basis for the total group and lifting scheme and precisionmeasurement behind. Second for76000DWT bulk carrier cabin area half block EZ31P(EG31P+EG32P) in total group and slipway hoisting have large deformation, processdeformation measurement and finite element numerical simulation calculation, and thenimprove the segmentation of total group support and carry hoisting strengthening scheme.Finally, according to the basic elements of lifting design and the principle of segmentedgroups, redesign block group and the lifting scheme. The main research work andconclusions of this paper is as follows:(1)Discuses about the technologies related to ship rapid embark. Total grouprespectively to the platform quickly, computer simulation of embark, crane quickly loosehook, introduces the advanced measurement technology and its application, give theprinciples and methods of section deformation measurement and improve the total groupand hoisting plan, has a guiding significance to the following section deformationmeasurement and improve the total group and lifting scheme.(2)Aiming at the problem of a half-dimensional segmentation EZ31P (EG31P+EG32P)of76,000DWT bulk carrier cabin area has excessive deformation in the total group at berthand lifting process, using the finite element numerical simulation of the actual total groupsupport and equipped with lifting state’s stress and deformation, get consistent result withfield measurements, through improve total group support programs and lifting strengthening program, control the segment’s elastic deformation, and set the total scheme and the liftingprocess to the scene, the measured segment the deformation is controlled to the extentpermitted precision, to lay the foundation for the rapid equipped.(3)Similarly for staging large deformation problems of EZ31P berth in total group andthe lifting process, according to the elements of lifting design and the basic principles ofsegmentation’s group and divide, redesign sectional groups and lifting program that willcomposed of EG31P, EG32P, EG31S, EG32S to a full width segments EZ31,to increase thelongitudinal strength so that no additional temporary measures to strengthen during lifting,and using finite element numerical simulation calculate its total group support and carrystrength lifting state, get the stress and deformation are in the range of required.