Temporary pier construction method adopting assembled heavy steel pipe supporting device

Abstract

The invention relates to the technical field of bridge building construction, in particular to a temporary pier construction method. The method sequentially comprises the following steps: A: pouring a base used for supporting an assembled heavy steel pipe supporting device in a design position; B: according to a design requirement, making members of the assembled heavy steel pipe supporting device; and C: assembling the assembled heavy steel pipe supporting device on the base, wherein the height of the base ensures the assembled heavy steel pipe supporting device to have sufficient supporting strength, rigidity and stability vertically and horizontally. According to the scheme provided by the invention, the height of the base and the height of the assembled heavy steel pipe supporting device are coordinated, so that on the premise of ensuring the temporary pier to have reliable supporting strength, the construction difficulty of the temporary pier is lowered, the project time is shortened, and the construction cost and time are saved.

Description

technical field [0001] The invention relates to the technical field of bridge building construction, in particular to a temporary pier construction method using an assembled heavy-duty steel pipe support device. Background technique [0002] In the field of bridge construction technology, the jacking construction method is mostly used in the construction of continuous girder bridges and cable-stayed bridges. Specifically, the beam body is poured or assembled segment by segment on the assembly platform, and then vertically pushed with a jack to make the beam body pass through. The temporary sliding bearing surface of each pier top is adjusted and placed in place. The jacking construction is to set up the construction site on the ground behind the abutment, pour or assemble the beam body in sections, install a steel guide beam whose length is the specified ratio of the jacking span in front of the beam body, and then apply force through a horizontal jack. Push the beam forwar...

AI Technical Summary

Problems solved by technology

For the temporary pier of concrete structure, it has good structural strength, but its construction process is similar to that of the permanent pier. The whole construction process has many procedures, which not only requires a lot of man-hours, but also greatly increases the construction cost. Finally, in the process of dismantling the temporary pier, a large amount of manpower and material resources are also required, which greatly increases the construction cost; for the truss type temporary pier, its structure is simple, easy to install and easy to dismantle, which not only saves the cost, but also shortens the construction time. The construction period is shortened, and the labor cost is reduced. However, the structural strength of this truss-type temporary pier is relatively weak in terms of its vertical support capacity and horizontal support capacity, so now this truss-type temporary pier is used; and , this kind of truss-type temporary piers, because some components are fixedly connected by welding or other forms, so when they are removed, they need to be removed in a destructive way. After the removal, these Components can no longer be reused, so there is also a certain waste, resulting in an increase in construction costs

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