Calculation methods of bearing capacities of eccentrically loaded concrete columns

CHEN Bao-chun; LIN Shang-shun

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CHEN Bao-chun, LIN Shang-shun. Calculation methods of bearing capacities of eccentrically loaded concrete columns[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 18-25.

Citation:

CHEN Bao-chun, LIN Shang-shun. Calculation methods of bearing capacities of eccentrically loaded concrete columns[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 18-25.

CHEN Bao-chun, LIN Shang-shun. Calculation methods of bearing capacities of eccentrically loaded concrete columns[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 18-25.

Citation:

CHEN Bao-chun, LIN Shang-shun. Calculation methods of bearing capacities of eccentrically loaded concrete columns[J]. Journal of Traffic and Transportation Engineering, 2014, 14(1): 18-25.

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Calculation methods of bearing capacities of eccentrically loaded concrete columns

CHEN Bao-chun^1
,,
LIN Shang-shun^{1, 2}

1.
School of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China
2.
Fujian Communications Planning and Design Institute, Fuzhou 350004, Fujian, China

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Author Bio:
CHEN Bao-chun(1958-), male, professor, PhD, +86-591-22865378, baochunchen@fzu.edu.cn
Received Date: 2013-08-21
Publish Date: 2014-02-25

Abstract

Abstract

By the application of the calculation methods of masonry columns and plain concrete columns in Codes for Design of Highway Masonry Bridges and Culverts (JTG D61—2005) and the calculation methods of reinforced concrete columns in Codefor Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTG D62—2004), the loadcarrying capacities of 3 reinforced concrete arch bridges with the spans of 70, 160, 420 m were calculated respectively. The change rules of the bearing capacities of reinforced concrete columns were studied considering slenderness ratio, eccentricity, reinforcement ratio, and etc. The parameter ranges of the equivalent beam-column of concrete arches and the ultimate bearing capacities of masonry columns, plain concrete columns and reinforced concrete columns were analyzed. Analysis result shows that the bearing capacities calculated by JTG D61—2005 are greater than those calculated by JTG D62—2004 when reinforced concrete arches with low reinforcement ratio are treated as equivalent beam-column. For reinforced concrete columns with low reinforcement ratios and high slenderness ratios and eccentricities, the bearing capacities calculated by the formulas of reinforced concrete columns are smaller than those calculated by the formulas of masonry columns or plain concrete columns. Thus it can be seen that there areunreasonable factors in the calculation methods of eccentrically loaded concrete columns in two codes, which should be improved.
- bridge engineering,
- concrete arch,
- eccentrically loaded column,
- ultimate bearing capacity,
- masonry,
- plain concrete,
- reinforced concrete,
- design code

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References(25)

References

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