Construction process for casting large-tonnage box beam in site by support pier method

Abstract

The invention relates to a construction process for a cast-in-site beam, in particular to the construction process for casting a large-tonnage box beam under a condition that the height of a pier is less than 10m. The construction process is characterized in that: a support pier system formed by a reinforced concrete prefabricated hollow support pier, a steel lattice structured column, a connecting rod and the like bears the load; a height adjusting system formed by an I-shaped steel beam, a longitudinal trussed beam, an adjusting wedge, square stock wood pads arranged as required, a beam falling sand box and the like adjusts an elevation of a bottom mould, sets a camber and transfers the load; and a mould plate system ensures the casting and forming of the concrete, so that the construction process for quickly and safely casting the box beam well in site is formed. The construction process has simple structure and less connecting points, and the deformation of the support pier is easily controlled; the cross section area is big, which facilitates the foundation treatment; the operability is strong, the beam preparation period is short, and the beam is big in rigidity and reliable in stability; and the resources are saved, the cost is lowered, and the construction process is widely applied.

Description

technical field [0001] The invention relates to a construction technique of a cast-in-place girder, in particular to a construction technique of a cast-in-situ large-tonnage box girder under the condition that the pier height is less than 10m. Background technique [0002] At present, the construction of cast-in-place beams mainly adopts two traditional methods, the bracket method and the mobile formwork method. The main advantages of the bracket method and the mobile formwork method are that the process is programmed, the safety is high, and there is no need for large-scale lifting equipment, transportation equipment, and bridge spans. The integrity of the structure is good; the disadvantage is that the construction period is long, the amount of steel such as bracket formwork is large, and the construction cost is high. Construction projects generally require the characteristics of short construction period and low cost. In this way, it is necessary to overcome the bottlene...

AI Technical Summary

Problems solved by technology

[0002] At present, the construction of cast-in-place beams mainly adopts two traditional methods, the bracket method and the mobile formwork method. The main advantages of the bracket method and the mobile formwork method are that the process is programmed, the safety is high, and there is no need for large-scale lifting equipment, transportation equipment, and bridge spans. The integrity of the structure is good; the disadvantage is that the construction period is long, the amount of steel such as bracket formwork is large, and the construction cost is high

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