Prestressed composite double-T girder bridge

摘要

For the pouring of the mold at the time of construction in the existing PSC (Pre-Stressed Concrete) box or PSC construction of a double T-shaped bridge was necessary process of installing and dismantling the formwork Shore (Stand for placement of the mold). To do this is a need for many on-site working conditions in the field is also acting as much of variables. For example, it should introduce the other uneconomic method of using large equipment because the roads and rivers passing under the bridge, or they can not install Shore between the piers and the piers if the residential area of ​​the city center.; For the present invention, since by introducing a prestress to the steel mold required for casting and curing of the concrete can gyeomhage the function of the Shore become a steel material and concrete composite as a method to integrate the bridge compared with the conventional bridge expected middle finger ganhwa can, and Shore (base), so the process is omitted and the construction becomes easy advantage, regardless of the site conditions can be expected to improve the quality of construction of the production plant. In addition, installation of Shores, this dissolution step is omitted because the cross-section through the composite of Figure prestressed concrete and at the same time to be omitted steel dissolution process of the mold is also less economical efficiency can be secured technology.; In addition, in some cases, and also chaeulsu the concrete to the entire cross-section, when pouring concrete on the steel outer wall also serves as a role of the dice and the Shore is a hollow form a hollow so as to enable a more middle finger ganhwa than sikimeuroseo reduce the weight of the bridge It may fill the concrete. In addition, the economics are more favorable to secure the bridge type, if necessary continuous span There can also configure the girder streak.; In terms of aesthetic appearance, double-T girders is wonderful because it seems to be a variety of utilization such as highways and high-speed urban roads.