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Experimental Study on Fatigue Characteristics of Prestressed Hollow Slab under Carbonation Corrosion
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[1]Du Chaowei,Zheng Yuanxun,Cai Yingchun,et al.Experimental Study on Fatigue Characteristics of Prestressed Hollow Slab under Carbonation Corrosion[J].Journal of Zhengzhou University (Engineering Science),2018,39(01):36-41.[doi:10.13705/j.issn.1671-6833.2018.01.029]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 39 Number of periods: 2018 01 Page number: 36-41 Column: Public date: 2018-01-20
Title:
Experimental Study on Fatigue Characteristics of Prestressed Hollow Slab under Carbonation Corrosion
Author(s):
Du Chaowei1; Zheng Yuanxun2; Cai Yingchun2; Gan Chao3; Han Yuxiao4
1. Highway Management Bureau, Henan Provincial Department of Transportation, Zhengzhou, Henan, 450000; 2. School of Water Conservancy and Environment, Zhengzhou University, Zhengzhou, Henan, 450001; 3. Henan Water Conservancy Survey and Design Research Co., Ltd., Zhengzhou, Henan, 450016; 4. Power transmission and transformation in Hubei Province Engineering Company, Wuhan, Hubei, 430061
Keywords:
CLC:
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DOI:
10.13705/j.issn.1671-6833.2018.01.029
Abstract:
In order to study the fatigue properties of prestressed hollow slab beams under the action of carbonization, according to the structural parameters of 20 m span prestressed concrete hollow slab beams which are commonly used in practical bridges engineering, the prestressed concrete hollow slab beam model (ratio of similitude is 0.1) was designed and manufactured based on the similarity principle. The carbonation erosion durability test (two kind of erosion degree: light and heavy) was carried firstly, then the static load failure test and the structural fatigue test were performed to study the effect of carbonation corrosion on dynamic and static parameters and fatigue life, and the influence of fatigue loading on dynamic and static strain, deflection and fundamental frequency of the test members, based the test results, the relationship between the degree of carbonation erosion and the structural fatigue properties were established. The results show that with the increase of the degree of carbonization corrosion, the fatigue life of the test plate will gradually reduced and the fatigue brittleness destroy appear, especially for heavy carbonation test plate, the fatigue life will drastically reduce. And with the increase of fatigue loading times, the dynamic and static parameters of the structure will gradually decrease.
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Last Update: 2018-01-23
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