【Summary】 Bridge steel formwork is mainly categorized into highway bridge formwork and railway bridge formwork. Depending on different conditions, bridge formwork can be classified into single/double-box girder formwork, pier column formwork, pier caps, beam caps, and T-shaped bridge formwork, etc. The pier column formwork is primarily used for cast-in-place pier column construction, featuring a reasonable design structure that meets the requirements for formwork strength, rigidity, and stability. It boasts a compact overall structure and easy assembly/disassembly, but it requires painting before use.
Bridge steel formwork is primarily categorized into highway bridge formwork and railway bridge formwork. Depending on conditions, bridge formwork can be further divided into single/double-box girder formwork, pier column formwork, pier cap, beam cap, and T-shaped bridge formwork, etc. The pier column formwork is mainly used for cast-in-place pier column construction, featuring a rational design structure that meets the formwork's strength, rigidity, and stability requirements. It boasts a compact overall structure and easy assembly/disassembly, but requires painting before use.
Before painting, it is essential to clean off weld slag and various process weld points, burrs, rust, etc.
2. The surface paint should be applied in blue, with a smooth and fine finish, free of defects such as roughness, paint leakage, cracking, and severe sagging.
After painting, apply numbers to the exterior surface consistently. Additionally, be sure to apply rust-inhibiting oil to the template surface.
Bridge Steel Formwork Design Principles:
1. Rationality
The compressive strength of steel molds should be sufficient and not less than 2 to 3 times the actual bending strength.
2. Aim to minimize seams and, under permissible construction conditions (lifting capacity, transportation conditions, etc.), make use of large formwork as much as possible. Reducing the amount of on-site dismantling work can help accelerate the construction pace.
When designing steel mold joints, a certain number of locating pins should be set to facilitate control of template misalignment.
To prevent slurry leakage, the connecting section of the two molds should be designed as a male-female overlap.
2. Standardization
Despite the varying shapes and sizes of each structure, they can still be categorized based on the primary cross-sectional shape, longitudinal shape, and size range (or a few basic shapes) as the tasks and varieties increase. The combination of standard cross-sectional templates and fitting templates can meet the size requirements, achieve the construction objectives, and reduce template investment.
3. Economy
When designing templates, choose materials rationally while ensuring the steel templates have sufficient rigidity and strength, avoiding blind conservative designs to increase costs.
4. Actual
When designing, it's essential to consider factors such as ease of transportation and disassembly, on-site working conditions, and construction requirements (like hoisting equipment), to ensure maximum convenience.
The above introduces the precautions and requirements for the painting of bridge steel formwork. Bridge steel formwork is mainly divided into highway bridge formwork and railway bridge formwork. Moreover, depending on different conditions, bridge formwork can be categorized into single and double-box girder forms, pier column forms, abutments, beam caps, T-shaped bridge forms, and more. The pier column formwork is primarily used for cast-in-place pier column construction, featuring a reasonable design structure that meets the formwork's strength, rigidity, and stability requirements. It has the advantages of a compact overall structure and easy assembly/disassembly. However, painting is required prior to use. If you have any other questions, feel free to consult us.
