Slab Behavior and Approximation of Transverse Strain Increase Due to the Change of Support Conditions from Rigid to Elastic Supports

When existing multiple simple span bridges are converted into a continuous span in order to increase the load carrying capacity by connecting each opposite ends of the simple beams, the rigid support conditions (pin and roller supports) have to be changed to elastic supports in order to absorb and d...

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Bibliographic Details
Published inKSCE journal of civil engineering Vol. 1; no. 1; pp. 1 - 10
Main Authors Park, Jong-Jin, Matsui, Shigeyuki, Cho, Hyun-Yung
Format Journal Article
LanguageEnglish
Published Seoul 대한토목학회 01.12.1997
Springer Nature B.V
Subjects
Approximation
Bearing strength
Bridges
Carrying capacity
Connecting
Direction
Earthquake loading
Earthquake loads
Earthquakes
Elastic supports
Energy distribution
Horizontal motion
Load carrying capacity
Seismic activity
Strain
Studies
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Summary:When existing multiple simple span bridges are converted into a continuous span in order to increase the load carrying capacity by connecting each opposite ends of the simple beams, the rigid support conditions (pin and roller supports) have to be changed to elastic supports in order to absorb and distribute the energy of large horizontal motion due to earthquake loading. However, it may overlook the development of additional stress in the transverse direction of the slab due to the relative vertical displacement of the elastic support. In this study, a simple span bridge specimen of 1/6 scale is tested and analyzed by the use of F.E.M. to investigate strain increase in the transverse direction of the slab when the rigid supports are replaced by the elastic supports. Both test and analytical results exhibit a notable increase of transverse stress throughout the whole feasible range of the vertical support stiffness.
ISSN:1226-7988
1976-3808
DOI:10.1007/BF02830458