Discussion On Structural Type Of Large Span Wharf And Research On Its Calculation Method

Elevated pile and beam-slab quay has been widely used after several years' development. However, the superstructure of beam-slab quay is prefabricated fixed and has large quantities of structural components, complicated to construction, steel bars are easily eroded. With increasingly obvious trend of largescale vessel, in order to adapt macrotype vessel approach to berth, design and construction of wharf in large deep water will be important research topic of port engineering.Combined with spandrel-braced arch bridge of bridge engineering, a new type of wharf with flat arch longitudinal grider is put up in this article. Based on the basic theory of finite element method and common software Ansys, calculation model of flat arch longitudinal grider is set up. According to the project of Yangshan Harbor, simulant calculation of internal force with this type of wharf and comparative analysis with calculation result of beam-slab simply supported longitudinal grider is done. It is shown that, compared with beam-slab simply supported longitudinal grider of same span, same load, same rigidity, wharf with flat arch longitudinal grider has 66.4% decrement of moment of midspan and 12.73% decrement of shearing force of midspan. Without increasing the cross-section and steel bars of longitudinal grider, flat arch longitudinal grider can improve the space between transverse to about 50m. The increase of space between transverse bent leads to the decrease of foundation pile quantity as well as underwater construction quantity of works. Meanwhile, structural components are prefabricated on land and floated to working site, so that the construction velocity is accelerated and fabrication cost is reduced.