| Title |
Numerical Study on Shotcrete Lining with Steel Reinforcement Using a Fiber Section Element |
| Authors |
김정수(Kim, Jeong Soo) ; 유지환(Yu, Jee Hwan) ; 김문겸(Kim, Moon Kyum) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.3.0919 |
| Keywords |
화이버 단면 요소;강지보;숏크리트;휨 하중 분담률;비선형 유한요소해석 Fiber section element;Steel support;Shotcrete;Flexural resistance ratio;Nonlinear finite element analysis |
| Abstract |
This research suggested the traffic signal calculation model of active transit signal priority using a shockwave model. Using this signal priority timing optimization model, the shockwave area is computed under the condition of Early Green and Green Extension among active transit signal priority techniques. This study suggested the speed estimation method of backward shockwave using average travel time and intersection passing time. A shockwave area change is calculated according to signal timing change of transit signal priority. Moreover, this signal timing calculation model could determine the optimal signal priority timings to minimize intersection delay of general vehicles. A micro simulation analysis using VISSIM and its user application model ComInterface was applied. This study checked that this model could calculate the signal timings to minimize intersection delay considering saturation condition of traffic flow. In case studies using an isolated intersection, this study checked that this model could improve general vehicle delay of more over ten percentage as compared with equality reduction strategy of non-priority phases. Recently, transit priority facilities are spreading such as tram, BRT and median bus lane in Korea. This research has an important significance in that the proposed priority model is a new methodology that improve operation efficiency of signal intersection. |