Influence of post-pouring joint on long-term performance of steel-concrete composite beam

Dunwen Huang; Junwei Han; Xiaochun Liu; Shizhuo Zhang; Tao Chen

추천

검색

자료유형: 학술저널

저자정보: Dunwen Huang (Central South University) Junwei Han (Central South University) Xiaochun Liu (Central South University) Shizhuo Zhang (Central South University) Tao Chen (Central South University)

저널정보: 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.28 No.1

발행연도: 2018.1

수록면: 39 - 49 (11page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

The concrete bridge decks are usually precast and in-situ assembled with steel girders with post-pouring joint in the construction practice of super-wide steel-concrete composite beam. But the difference of concrete age between the precast slabs and the post-pouring joint has been not yet considered for the long-term performance analysis of this kind composite beam. A simply supported precast-assembled T-shaped beam was taken as an example to analyze the long-term performance of steel-concrete composite beam with post-pouring joint. Based on the deformation coordination conditions of the old-new concrete deck and steel girder, a theoretical model for the long-term behavior of precast-assembled composite beam is proposed in this paper according to age-adjusted effective modulus method. Then, the feasibility of the proposed model is verified by the available test data from the Gilbert's composite beams. Parametric studies were preformed to evaluate the influences of the cross-sectional area ratio of the post-pouring joint to the whole bridge deck, as well as the difference of concrete age between the precast slabs and the post-pouring joint, on the long-term performance of the composite beam. The results indicate that the traditional method without considering the age difference would seriously underestimate the effect of creep and shrinkage of concrete bridge decks. The concrete age difference between the precast slabs and the post-pouring joint should be demonstrated for the life cycle design and long-term performance analysis of precast-assembled steel-concrete composite beams.

참고문헌 (25)

참고문헌 신청

Al-Deen, S. / 2011 / Shrinkage effects on the flexural stiffness of composite beams with solid concrete slabs: An experimental study / Eng. Struct. 33(4):1302~1315

Al-Deen, S. / 2011 / Full-scale longterm experiments of simply supported composite beams with solid slabs / J. Constr. Steel Res. 67(3):308~321

Safat Al-Deen / 2015 / Non-uniform shrinkage in simply-supported composite steel-concrete slabs / Steel and Composite Structures, An International Journal 18(2):375~394

Amadio, C. / 1997 / Simplified Approach to Evaluate Creep and Shrinkage Effects in Steel-Concrete Composite Beams / J. Struct. Eng. 123(9):1153~1162

Bazant, Z.P. / 1972 / Prediction of concrete creep effects using age-adjusted effective modulus method / ACI J. 69(4):212~217

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!