| Title |
A Experimental Study on the Structural Performance of Precast Bracket under Precast Road Deck Slab of Double Deck Tunnel |
| Authors |
김보연(Kim, Bo Yeon) ; 이두성(Lee, Doo Sung) ; 김태균(Kim, Tae Kyun) ; 김영진(Kim, Young Jin) |
| DOI |
https://doi.org/10.12652/Ksce.2017.37.4.0647 |
| Keywords |
브라켓;복층터널;프리캐스트 쉴드 터널라이닝;정적재하;동적재하 Bracket;Double Deck Tunnel;Shield precast tunnel lining;Static load;Dynamic load |
| Abstract |
The main purpose of this study is to investigate the static & dynamic behavior of a precast bracket under precast road deck slab of double deck tunnel. In order to improve the construction speed, the field prefabricated bracket to connect the intermediate slab to the precast shield tunnel lining structure has been developed in the 'SPC (Steel Precast Concrete) bracket'. The experiments were performed for the full scale model in order to evaluate the performance of the 'SPC bracket', the structural stability was verified through the FEM analysis. The result of static loading test, no deformations or cracks of the bracket undergo the ultimate load was investigated. In addition, no pulling or deformation of the chemical anchor for fixing the bracket was measured. As a result of dynamic loading test, it was investigated that there is no problem in the chemical anchor for fixing the bracket. FEM analysis showed similar behavior to static load test and it was determined that there is no problem in serviceability and structural safety. |