FINITE ELEMENT ANALYSIS OF BENDING TEST FOR PRESTRESSED CONCRETE DOUBLE TEES

GE Yipeng; XIONG Xueyu

doi:10.13204/j.gyjzg21061511

Volume 51 Issue 10

Feb. 2022

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Citation:

GE Yipeng, XIONG Xueyu. FINITE ELEMENT ANALYSIS OF BENDING TEST FOR PRESTRESSED CONCRETE DOUBLE TEES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 21-27,52. doi: 10.13204/j.gyjzg21061511

Citation:

GE Yipeng, XIONG Xueyu. FINITE ELEMENT ANALYSIS OF BENDING TEST FOR PRESTRESSED CONCRETE DOUBLE TEES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(10): 21-27,52. doi: 10.13204/j.gyjzg21061511

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FINITE ELEMENT ANALYSIS OF BENDING TEST FOR PRESTRESSED CONCRETE DOUBLE TEES

doi: 10.13204/j.gyjzg21061511

GE Yipeng,
XIONG Xueyu^,

Institute of Prestressed Structures, Tongji University, Shanghai 200092, China

Received Date: 2021-06-15
Available Online: 2022-02-21

Abstract

Abstract

In order to meet the application requirements of prestressed concrete double tees in long-span and heavy-load structures and make up for the lack of full-scale test and finite element simulation of this kind of specimens in China, four full-scale pretensioning specimens were subjected to bending load, with the spans of 12 m and 13.2 m. The whole process of the test was simulated by ABAQUS finite element analysis software, combined with the measured material characteristics. Based on the good simulation results, it was studied that the effects of concrete strength, the amount prestressed reinforcement, the amount of reinforcement in slabs and ribs, and effective prestress on the flexural properties. The results of test and finite element analysis showed that the double tees designed according to Code for Design of Prestressed Concrete Structures(JGJ 369-2016) had great safety, the actual bearing capacity of the specimen was 1.5 times higher than the design bearing capacity, and the calculated values using the measured material properties was 9.8% lower than the test values on average; the deviation of ultimate bearing capacity simulated by ABAQUS was less than 5%, and the change of reinforcement stress was consistent in the whole process; in the bending state, the effective prestress had the greatest impact on the cracking load, and the amount of prestressed reinforcement had the greatest impact on the flexural capacity. The double-layer reinforcement mesh would improve the flexural capacity by 11.3%.
- prestressed concrete,
- double tees,
- finite element analysis

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References(23)

References

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