Abstract
A new recoverable box steel bridge column with bottom replaceable piers was proposed. The axial compressive tests were initially performed on fourteen specimens which have three different types of steel replaceable piers. Results demonstrate that all three types of structural measures improve the specimens’ strength and deformation performance. Compared to the installing of the low yield point steel plates, the embedded shell plates and the longitudinal ribs on the box walls result in a greater increase of the specimens’ bearing capacity and ductile performance. When the specimen has the longitudinal ribs installed on the box walls and the smaller space of transverse stiffeners, its bearing capacity is increased. The specimens’ ductility is improved when the space of transverse stiffeners and the height of low yield point steel plates decrease. The specimens’ bearing capacity and ductility are only slightly affected by the variation of the embedded shell’s radian. Finally, a simplified calculation formula for the axial compressive bearing capacity of the bottom replaceable piers is proposed.
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Abbreviations
- L :
-
Height of a column
- h :
-
Height of box cross section
- h 0 :
-
Height of web plate
- h 1 :
-
Height of low yield point steel plate
- b :
-
Width of box cross section
- b 1 :
-
Width of low yield point steel plate
- t w :
-
Thickness of a web plate
- t f :
-
Thickness of a flange plate
- θ :
-
The radian of embedded shell plate
- S :
-
Space of transverse stiffening ribs on embedded shell plate
- A :
-
The cross-sectional area
- λ z :
-
Slenderness ration along the axis Z
- E :
-
Young’s modulus
- μ :
-
Displacement ductility coefficient
- f y :
-
Yield strength of steel material
- P :
-
Vertical load at the top of the column
- P y :
-
Yield load
- P max :
-
Maximum load
- P u :
-
Ultimate load
- Δ :
-
Vertical displacement at the top of the column
- Δ y :
-
Vertical displacement corresponding to Py
- Δ max :
-
Vertical displacement corresponding to Pmax
- Δ u :
-
Vertical displacement corresponding to Pu
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Acknowledgements
The research reported in the paper is supported by the National Natural Science Foundation of China (Nos. 51778248 and 51408240), the Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University (No. ZQN-PY312) and the Natural Science Foundation of Fujian Province (No. 2018J01075). The financial support is highly appreciated.
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Li, H., Luo, J., Han, F. et al. Tests of New Box Steel Replaceable Piers Under Axial Compression. Int J Steel Struct 19, 896–913 (2019). https://doi.org/10.1007/s13296-018-0171-2
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DOI: https://doi.org/10.1007/s13296-018-0171-2