Temporary supports

Definition

Temporary supports are structural elements used during construction to hold up a structure until it can support itself. These supports are essential in processes like incremental launching and segmental construction, as they provide stability and safety while different components of the structure are being assembled or launched into place.

5 Must Know Facts For Your Next Test

1. Temporary supports are critical during the incremental launching process, as they help ensure the stability of the bridge components as they are pushed into position.
2. In segmental construction, temporary supports may be needed to hold segments until they are connected with post-tensioning cables or other methods that provide full structural integrity.
3. The design of temporary supports must consider factors like load distribution, wind loads, and potential seismic activity to ensure safety.
4. Temporary supports can be made from various materials including steel, wood, or even engineered systems designed specifically for heavy loads.
5. Proper planning and execution of temporary supports can significantly reduce construction time and costs by minimizing the risk of structural failure during the construction process.

Review Questions

• How do temporary supports function within the processes of incremental launching and segmental construction?
  • Temporary supports play a crucial role in both incremental launching and segmental construction by providing necessary stability to structures as they are assembled. In incremental launching, these supports ensure that each segment being pushed into place is secure until it is permanently connected. Similarly, in segmental construction, temporary supports hold each segment until they gain sufficient strength through methods like post-tensioning. Without these supports, the risk of structural failure increases significantly.
• Evaluate the importance of proper design and planning of temporary supports in construction projects involving bridges.
  • Proper design and planning of temporary supports are vital for ensuring the safety and efficiency of bridge construction projects. This includes assessing the loads that will be applied to the supports and understanding how those loads will change throughout the construction process. Effective planning minimizes risks related to structural failures or accidents, which can lead to costly delays and increased project expenses. By prioritizing the design of these supports, engineers can create a safer working environment and facilitate smoother construction operations.
• Synthesize information about how temporary supports affect overall project timelines and costs in bridge engineering.
  • Temporary supports significantly influence both project timelines and costs in bridge engineering by affecting how quickly and safely structures can be erected. If temporary supports are well-designed and effectively implemented, they can streamline the construction process by allowing workers to progress efficiently without delays caused by instability. Conversely, inadequate or poorly planned temporary support systems can lead to accidents or structural issues that require costly repairs or rework, thus prolonging the project duration and inflating expenses. Overall, a strategic approach to temporary supports is key to optimizing project outcomes.

Related terms

formwork: A temporary structure used to support concrete until it hardens and gains enough strength to support itself.

shoring: A system of supports used to temporarily hold up a structure, often used in repair or construction to ensure safety.

cantilever: A projecting beam or structure supported only at one end, requiring careful use of temporary supports during construction.