A pre-tensioned prefabricated beam pedestal

Abstract

The invention discloses a precast beam construction technology, and particularly relates to a precast beam pedestal obtained through a pre-tensioning method. The precast beam pedestal comprises a rectangular plate bottom plate and force transmission columns arranged on the two sides of the bottom plate in parallel. A fixing end steel beam is arranged at one ends of the force transmission columns, and a tensioning end steel beam is arranged at the other ends of the force transmission columns. A tensioning device is connected to the tensioning end steel beam. Steel strands are arranged between the fixing end steel beam and the tensioning end steel beam. When the tensioning device conducts tensioning on the steel strands, the steel strands and the tensioning end steel beam move relatively, and therefore the fixing end steel beam can be tensioned and closely attached to one ends of the force transmission columns, and meanwhile the tensioning end steel beam is pressed and closely attached to the other ends of the force transmission columns. According to the precast beam pedestal obtained through the pre-tensioning method, by changing the structural form of the pedestal, the defects that a traditional pedestal is complex in structure, wastes materials and labor and is long in manufacturing period are overcome, the precast beam pedestal can be simple in structure, cost is substantially saved, and the construction progress is accelerated.

Description

technical field [0001] The invention relates to the technical field of prefabricated beam construction, in particular to a pretensioned prefabricated beam pedestal. Background technique [0002] Pretensioning method is a method of pre-stressing concrete members during the prefabrication process to improve the performance of members in order to improve the crack resistance of reinforced concrete members and avoid premature cracks in reinforced concrete members. Usually, the method of tensioning steel bars before pouring concrete is also known as pretensioning, and it plays an important role in engineering construction. [0003] In the production of prefabricated beams, the process of pretensioning and prestressing has a great effect on improving the structure and performance of the beam body. First, the fixed steel strands are stretched and fixed before pouring concrete, and the tensioned fixed steel strands are temporarily anchored. Then pour concrete on the pedestal or ste...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a pre-tensioned prefabricated beam pedestal in order to overcome the disadvantages of complex structure, waste of materials, waste of labor and long production period of the beam pedestal used in the prior art. By changing its own structure, the prefabricated beam pedestal makes its structure simpler and reduces the consumption of materials and labor, which has a great effect on saving costs and speeding up the construction progress

Images