Research on Crack Calculation Method of Pretensioning Prestressed Concrete Composite Beams

LI Xingyu; WANG Xiaofeng; ZHAO Guangjun; WANG Shaoqin; JIA Yue

doi:10.13204/j.gyjzG22122906

Volume 54 Issue 10

Oct. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(10): 46-52

LI Xingyu, WANG Xiaofeng, ZHAO Guangjun, WANG Shaoqin, JIA Yue. Research on Crack Calculation Method of Pretensioning Prestressed Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(10): 46-52. doi: 10.13204/j.gyjzG22122906

Citation:

LI Xingyu, WANG Xiaofeng, ZHAO Guangjun, WANG Shaoqin, JIA Yue. Research on Crack Calculation Method of Pretensioning Prestressed Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(10): 46-52. doi: 10.13204/j.gyjzG22122906

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Research on Crack Calculation Method of Pretensioning Prestressed Concrete Composite Beams

doi: 10.13204/j.gyjzG22122906

1. College of Civil Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
3. China Academy of Building Research Co., Ltd., Beijing 100013, China;
4. College of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

Received Date: 2022-12-29
Available Online: 2024-11-06

Abstract

Abstract

According to the stress principle of prestressed concrete composite flexural members, the paper put forward the calculation method of the steel stress about pretensioned prestressed concrete composite beams in service stage, which takes into account the two stages of stress in construction stage and service stage, filling the gap in the current standard in China. The paper also revised the calculation method of crack width in the service stage about prestressed concrete composite beams in the code. Referring to the relevant provisions of American ACI 318 Code on controlling the cracks of prestressed components through nominal tensile stress, based on specific projects, the recommended nominal tensile stress control values for different crack limits of pretensioned prestressed concrete T-shaped composite beams under the Chinese code system were proposed.
- pretension,
- prestress,
- composite beam,
- crack calculation,
- nominal tensile stress

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References(11)

References

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