An analytical model to determine the shear capacity of prestressed continuous concrete beams
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Bibliographic Details
| Author(s): |
Philipp Gleich
(Chair of Concrete Structures, TU Dortmund University, Dortmund, Germany)
Reinhard Maurer (Chair of Concrete Structures, TU Dortmund University, Dortmund, Germany) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 1544-1555 | ||||
| Total no. of pages: | 12 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.1539 | ||||
| Abstract: |
Structural reassessments of existing older prestressed concrete bridges based on current German standards often uncover substantial deficits in terms of the required shear reinforcement in the main girders in longitudinal direction. This is due to the negligence of the concrete shear capacity that can be determined using thecompressive arch modelas long as plane sections remain plane and only vertical cracks due to bending occur in state II. In case of inclined cracks due to shear plane sections do not remain plane. Anextended compressive arch modelis derived from experimental and numerical investigations that can determine the concrete shear capacity analytically even in case of existing inclined cracks in state II. This model also takes into account that parts of the acting shear forces are covered by the truss model. |
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| Keywords: |
shear resistance arching effect bridge reassessment post-tensioned concrete beams
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