Experiment and Analysis of Concrete Superimposed Beam-plate under Secondary Load

DOI

10.2991/iccet-15.2015.118How to use a DOI?

Keywords

concrete, superimposed beam-plate, secondary load, strengthening

Abstract

Combining with strengthening engineering of a practical reinforced concrete plate bridge serving for 30 years, the superimposed experiments of four old bridge plates were studied with full size of 4960mm*950mm*220mm. The characteristics of composite members under secondary load stage were analyzed, such as load prestress, bilinear distribution of strain, tensile stress excess of reinforcement and compressive strain lag. Based on experiments and analysis, the calculation formulas of rebar stress control, the characteristic coefficient and short-term stiffness of composite members were deduced. By comparison, the proposed formulas results coincide well with test data and are closer to test values than those from Code formulas. The bearing capacity of superimposed beam-plate increases 2.3 times higher than original plate. The strengthened bridge using this method has served more than 5 years, which shows that composited strengthening method of bridge plate is economically feasible.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Limin Yang
AU  - Jiangwei Wang
AU  - Jinjun Guo
PY  - 2015/11
DA  - 2015/11
TI  - Experiment and Analysis of Concrete Superimposed Beam-plate under Secondary Load
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 632
EP  - 636
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.118
DO  - 10.2991/iccet-15.2015.118
ID  - Yang2015/11
ER  -