지하차도를 하부구조로 활용한 고가교량 시공방안

There is increasing that the overhead-bridges or underground roadways are being constructed to relieve traffic congestion in downtown area and to secure regular time of public transportation. On the other hand, there is also growing incurring civil petition and traffic congestion due to constructing at the crossroads. That"s because height and span are increased by separately constructing the overhead-bridges or underground roadways at the crossroads. In this study, we suggested a way to reduce construction costs by using a part of underground roadway to substructures of overhead-bridge and civil petitions caused by prospect right infringement. In other words, it can reduce construction costs by using u-shaped segments consisted of underground roadway to abutment parts of overhead-bridge. Also, it can be decreasing civil petitions by shortening height and span of overhead-bridge and concentrating on crossroad.