EXPERIMENTAL STUDIES ON BEARING CAPACITY AFTER EARTHQUAKE OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW SLAB-COLUMN STRUCTURE

Yang Xiaohua; Zhou Chaoyang; He Xuejun; Mo Lingwen

doi:10.13204/j.gyjz201010013

Volume 40 Issue 10

Dec. 2014

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Yang Xiaohua, Zhou Chaoyang, He Xuejun, Mo Lingwen. EXPERIMENTAL STUDIES ON BEARING CAPACITY AFTER EARTHQUAKE OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW SLAB-COLUMN STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 54-60. doi: 10.13204/j.gyjz201010013

Citation:

Yang Xiaohua, Zhou Chaoyang, He Xuejun, Mo Lingwen. EXPERIMENTAL STUDIES ON BEARING CAPACITY AFTER EARTHQUAKE OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW SLAB-COLUMN STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 54-60. doi: 10.13204/j.gyjz201010013

Citation:

Yang Xiaohua, Zhou Chaoyang, He Xuejun, Mo Lingwen. EXPERIMENTAL STUDIES ON BEARING CAPACITY AFTER EARTHQUAKE OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW SLAB-COLUMN STRUCTURE[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 54-60. doi: 10.13204/j.gyjz201010013

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EXPERIMENTAL STUDIES ON BEARING CAPACITY AFTER EARTHQUAKE OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW SLAB-COLUMN STRUCTURE

doi: 10.13204/j.gyjz201010013

1.
1. Schools of Civil Enginerring,Central South University,Changsha 410075,China;
2.
2. Schools of Civil Enginerring,Hunan University of Technology,Zhuzhou 412008,China

Received Date: 2010-02-04
Publish Date: 2010-10-20

Abstract

Abstract

A 1 /4 scale four-storey model of post-tensioned unbonded prestressed concrete hollow slab-column structure has been made to do the load test in elascity on the four-storey plate before a shaking table vibration and ultimate load test on the second-storey plate after the shaking table vibration.By measuring the floor deflection,stresses of steel bars and crack of hollow slab,the earthquake damage of post-tensioned unbonded prestressed concrete hollow slab-column structure and the bearing capacity of the floor are explored.The test results showed that the middle points deflections of hollow slab and beams in parallel and vertical direction the tubes of are larger after the earthquake than before the earthquake in the same load.The hollow floor has a good integrity,the influence of earthquake on the stiffness of the slab is very smaller.The bearing capacity tests of slab can be also divided into three stages: elastic stage,crack expansion stage and destruction stage.The influence of earthquake on prestressed hidden beams in vertical direction of tube are larger than the those in parallel direction of tube.The mid-span deflections of beams in vertical direction of tube are increased significantly than those in parallel direction of tube after earthquake.Based on the test results and in consideration of crack growth in hollow slab,a improved plastic hinge model is set up to predict the ultimate loads,The calculated results of the ultimate loads with improved plastic hinge model are in good agreement with the experiment data.
- post-tensioned unbonded prestressed concrete,
- hollow floor slab,
- slab-column structure,
- ultimate loads

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References(17)

References

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