Calculation of Effective Axial Stiffness of Cracked Reinforced Concrete Tension-Flexure Members Under Temperature Reduction

CHEN Tao; JIN Chenhua; ZHANG Ke; DIAO Zhiwei; WU Chang; MENG Shaoping

doi:10.13204/j.gyjzG21120701

Volume 53 Issue 6

Jun. 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(6): 100-104,74

CHEN Tao, JIN Chenhua, ZHANG Ke, DIAO Zhiwei, WU Chang, MENG Shaoping. Calculation of Effective Axial Stiffness of Cracked Reinforced Concrete Tension-Flexure Members Under Temperature Reduction[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 100-104,74. doi: 10.13204/j.gyjzG21120701

Citation:

CHEN Tao, JIN Chenhua, ZHANG Ke, DIAO Zhiwei, WU Chang, MENG Shaoping. Calculation of Effective Axial Stiffness of Cracked Reinforced Concrete Tension-Flexure Members Under Temperature Reduction[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 100-104,74. doi: 10.13204/j.gyjzG21120701

Citation:

CHEN Tao, JIN Chenhua, ZHANG Ke, DIAO Zhiwei, WU Chang, MENG Shaoping. Calculation of Effective Axial Stiffness of Cracked Reinforced Concrete Tension-Flexure Members Under Temperature Reduction[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(6): 100-104,74. doi: 10.13204/j.gyjzG21120701

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Calculation of Effective Axial Stiffness of Cracked Reinforced Concrete Tension-Flexure Members Under Temperature Reduction

doi: 10.13204/j.gyjzG21120701

CHEN Tao^1,2,
JIN Chenhua³,
ZHANG Ke⁴,
DIAO Zhiwei⁵,
WU Chang^{1,2
,
,},
MENG Shaoping^1,2

1. School of Civil Engineering, Southeast University, Nanjing 211189, China;
2. National Prestressing Engineering Technology Research Center, Nanjing 211189, China;
3. School of Architectural Engineering, Jinling Institute of Science and Technology, Nanjing 211169, China;
4. Jiangsu Xinzhu Tongchuang Civil Engineering Co., Ltd., Nanjing 211800, China;
5. Architectural Design and Research Institute Southeast University Co., Ltd., Nanjing 210096, China

Received Date: 2021-12-07
Available Online: 2023-08-18

Abstract

Abstract

The effect of temperature on ultra-long concrete structures is very significant. Bending cracks may occur on the structure under service loads, while the tensile stress generated by temperature effect will further crack the structures, and thus the stiffness of the members will be reduced significantly. A simplified elastic analysis method was proposed in the paper, which considered the stiffness reduction of reinforced concrete tension-flexure members under temperature effect, and could obtain the effective axial stiffness of cracked tension-flexure members through simple iterations. The internal force of a single-span statically indeterminate beam under combined service load and temperature reduction was analyzed with the proposed method and finite element program ANSYS respectively to obtain the axial force versus temperature effect curve. The comparison between these two methods indicated that the calculated axial force by proposed method coincided well with finite element modeling results. The proposed simplified method could avoid complicated nonlinear analysis and had reasonable feasibility and accuracy.
- extra-long concrete structures,
- temperature effect,
- tension-flexure member,
- stiffness reduction,
- ANSYS

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References(14)

References

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