Hiệu ứng hư hỏng dính bám trong mô hình uốn năm điểm dành cho mặt cầu thép trực hướng và lớp phủ bê tông nhựa

Bài viết này tiến hành mô tả sự phân bố của miền mất mát dính bám một cách ngẫu nhiên trong đó khống chế tỷ lệ phần trăm về mặt diện tích, sau đó tiến hành mô phỏng ứng xử của kết cấu dầm chịu uốn 5 điểm bằng phần mềm ứng dụng phương pháp phần tử hữu hạn, cuối cùng là đưa ra một số nhận định và phân tích từ một số kết quả thu được từ bài toán mô phỏng. | Transport and Communications Science Journal Vol 72 Issue 2 02 2021 166-179 Transport and Communications Science Journal EFFECT OF TACK COAT FAILURE ON THE MODELLING OF FIVE-POINT BENDING TEST FOR ORTHOTROPIC STEEL BRIDGE DECK AND ITS ASPHALT SURFACING Nguyen Dinh Hai1 3 Tran Anh Tuan2 3 1 Section of Materials of Construction University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam 2 Section of Bridge and Tunnel Engineering University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam 3 Research and Application Center for Technology in Civil Engineering RACE University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam ARTICLE INFO TYPE Research Article Received 8 6 2020 Revised 11 11 2020 Accepted 28 11 2020 Published online 15 2 2021 https Corresponding author Email Abstract. Orthotropic steel decks are widely used for long-span bridge such as cable-stayed bridges suspension bridges and truss bridges because of its considerable lightweight and flexibility. In this kind of bridge deck an asphaltic surfacing structure have been employed to protect the steel plate against corosion and provide riding comfort. However the increase in traffic loads and volumes the large local deformations the wind the temperatures make the structure of asphalt surfacing on orthotropic steel bridge deck is destroyed. Once of the main and most important damage types is the loss of bond between the surfacing material and the steel plate. Therefore the main purpose of this work is to investigate the influence of tack coat failure on the mechanical behavior of the steel bridge deck with asphalt surfacing system by using the five-point bending beam model. A good understanding of this problem is required in order to improve the service life of the whole bridge structure. Keywords tack coat failure orthotropic steel deck loss of bond asphalt surfacing. 2021 University of Transport and .