8
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Flexural Behavior of Precast Concrete Segmental Box-Girders with Dry Joints

      1 , 2 , 3 , 1
      Advances in Civil Engineering
      Hindawi Limited

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Precast concrete segmental (PCS) box-girders are widely used in bridge construction, while studies on flexural behaviors of PSC box-girders with dry joints are insufficient. Six large-scale PCS box-girders with dry joints were tested to failure under two-point loading in this study. Strain increments, tendon forces, deflections at mid-span, and cracks were recorded during the tests. Multiple factors were investigated with regards to their influence on flexural performance of girders. It is found that most specimens failed due to the excessive force in tendons, while the specimen with external tendons failed due to concrete compressive crushing. Larger shear span ratio resulted in greater increase in tendon force and concrete strain during loading and, accordingly, the lowest ultimate flexural capacity. Lower concrete strength resulted in larger increase in concrete strain and tendon force during loading and relatively smaller deflection at failure. For the specimen with four segments, a significant increase in tendon force and smaller deflections at failure was observed as compared with specimen 1, though the failure load was similar. Numerical simulation is further conducted, where it is found that the area of prestressed tendon and the number of joints have a significant influence on ultimate flexural bearing capacity and deflection; besides, deflection control standard of PCS girders should be stricter than that of the integral cast girder. The corbel joints, in general, show better ultimate performance than the castle-shaped joints.

          Related collections

          Most cited references18

          • Record: found
          • Abstract: not found
          • Article: not found

          Shear Behavior of Joints in Precast Concrete Segmental Bridges

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Shear strength of dry joints of concrete panels with and without steel fibres

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Shear strength of steel fiber-reinforced concrete dry joints in precast segmental bridges

                Bookmark

                Author and article information

                Contributors
                Journal
                Advances in Civil Engineering
                Advances in Civil Engineering
                Hindawi Limited
                1687-8094
                1687-8086
                November 5 2020
                November 5 2020
                : 2020
                : 1-14
                Affiliations
                [1 ]School of Civil Engineering, Southeast University, Nanjing 210096, China
                [2 ]Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China
                [3 ]College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
                Article
                10.1155/2020/8895180
                b433fdf0-dfc1-4480-8658-49e4820c5166
                © 2020

                https://creativecommons.org/licenses/by/4.0/

                History

                Comments

                Comment on this article