| 摘要 |
The present invention relates to construction of a pedestrian bridge which both a bicycle and people use and in which a vehicle is not driven thereon. The pedestrian bridge has small load loaded thereon and has a short span. The width of the bridge is narrow. In other words, a girder is mounted in the lower part of a sidewalk, and a handrail is installed on both sides of the bridge to complete the bridge. Therefore, the load which can be loaded is small since the height of the girder is low. So, the span becomes short, and a gap between pillars of a lower structure is dense. Therefore, construction costs are increased, and the gap between the lower pillars becomes narrow. So, the amount of excavation is increased, and it could be a cause of environmental contamination. A girder, used for a handrail and performing both roles of the handrail and the girder, is constructed at a desired position to install the handrail in order to increase the height and lengthen the span according to the high height. Therefore, the construction method is to reduce construction costs by widening the gap between piers of the lower part and protect the environment. |
