About different installation methods of bridge steel formwork

For the construction team, the installation of steel formwork needs to ensure that it has sufficient strength, rigidity and stability. It must be able to reliably bear the various construction loads specified in the formwork construction code. So Hubei Wangke Formwork Co., Ltd. will share the characteristics of different installation methods of bridge steel formwork.

1. In-situ pouring method of bridge steel formwork:

The cast-in-place method is to set up a bracket at the bridge position, pour the bridge body concrete on the bracket, and remove it after reaching the strength Templates and brackets. On-site pouring does not require prefabrication on site, and does not require large-scale lifting and transportation equipment. The main reinforcement of the beam body cannot be interrupted, and the integrity of the bridge is good.

The main disadvantages are the long construction period, difficulty in quality control of construction, and stress caused by shrinkage and creep of prestressed concrete beams. The loss is large, the support and bridge formwork are consumed during the construction, the construction cost is high, the support setting affects the flood discharge and navigation, and the construction process may be threatened by flood and drift.

2. Prefabricated installation method of bridge template:

Everyone’s prefabrication yard is located near the prefabrication plant or near the bridge site, and the transportation is convenient. The prefabricated girder adopts certain installation methods , The prefabrication installation method generally refers to the prefabrication installation of reinforced concrete or prestressed concrete simply supported beams, which is divided into three parts: prefabrication, transportation and installation.

The main feature is that the quality of the parts is good, which helps to ensure the quality and dimensional accuracy of the parts, and adopts mechanized construction; The structures can be operated in parallel to shorten the construction period of the site; the labor can be effectively used, thereby reducing project costs; due to the fast construction speed, it can be applied to emergency construction projects; after prefabrication, due to the need to store the components for a period of time, the deformation caused by the shrinkage and creep of the concrete can be Reduced, so there is a certain age at the time of installation.