Bridge launching/building is one of the main areas in the construction industry. There are different methods of bridge launching, depending on the size of the project and available resources. Nevertheless, regardless of the method used, bridge launching is no easy task.
A lot of detail and planning goes into creating a bridge that is both functional and strong. One bridge launching method that simplifies the making of bridges is the incremental launching method.
Incremental bridge launching method
The incremental bridge launching method involves building an entire bridge deck from only one abutment of the bridge. The incremental launching method performs a step-by-step procedure and different sections of the bridge are constructed by pushing the structure outwards from an abutment towards the pier.
Incremental bridge launching is typically undertaken in a series of increments such that additional bridge sections are added to the rear of the superstructure unit prior to subsequent launches. The superstructure can be pushed with the help of transfer devices.
Although it requires a considerable amount of design expertise, specialized construction equipment, and analysis, incremental bridge launching is still a popular bridge launching method. This is because incremental launching is still often the most reasonable method for constructing bridges over inaccessible or environmentally protected areas.
Such areas include deep valleys, locations with environmentally protected species, deep water crossings, and locations with poor soil conditions that make accessing equipment difficult.
The incremental bridge launching method is efficient and convenient.
- It enables rapid construction.
- It uses less space with its superstructure assembly.
- It causes minimal disturbance to surroundings including environmentally sensitive areas.
- It provides increased worker safety since erection work is conducted at a lower elevation.
- It can be used for bridge decks with lengths greater than 250m.
Bridge launching techniques
There are also various other bridge launching methods. These include:
The cast-in-situ method
This bridge construction method is used where complex and unusual geometric shapes are involved. This type of bridge launching method is also good for situations where the transportation of prefabricated elements is difficult, either due to unreachability or size.
The precast method
With this bridge launching method, the bridge is constructed with the help of precast concrete elements.
The cable-stayed method
In this method, cables are used to carry the bridge deck from one or both sides of the supporting tower. The cable-stayed method can be used for building bridges that span over 300m.
The technique used in the construction of a bridge will be determined by several factors including the scale of the bridge, the local weather, the accessibility of the site, the availability of materials, and the time allowed for construction.
비깅우데만은 일반적으로 3 단계의 제작장을 조성하고 각 단계별로 케이슨 이송 시스템 적용 하는 진보된 케이슨 제작을 위한 시스템을 공급 합니다.
사전에 제작된 케이슨 저판을 벽체 시공을 위한 공장형 슬립폼에 정확한고 안전하게 이송 합니다.
완성된 케이슨을 육상에서 해상으로 60mm 내의 오차를 극복하며 이송 합니다.