Supporting device of temporary support for bent cap construction and construction method thereof

Abstract

The invention discloses a supporting device of a temporary support for bent cap construction and a construction method of the supporting device, and belongs to the technical field of bridge construction. The supporting device comprises a horizontal supporting rod, a surrounding connecting component and a vertical supporting rod. The surrounding connecting component is detachably connected with thehorizontal supporting rod through a clamping groove, an annular connecting bolt and a connecting bolt, a vertical supporting column is connected with the surrounding connecting component through a vertical connecting bolt and a sleeve, and devices such as a bent cap cast-in-place construction formwork are arranged on the vertical supporting rod. Cover beam construction load, temporary facility load, cover beam dead weight and the like are transmitted to the bridge pier column through the vertical supporting column, the surrounding connecting component and the horizontal supporting rod. The bent cap construction device designed by the invention has the advantages of high shear bearing capacity, high anti-overturning bearing capacity, convenience and safety in construction, high construction efficiency, high recycling rate, stable construction quality and the like.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a support device for a temporary support for cover beam construction and a construction method thereof. Background technique [0002] The existing cast-in-place construction of cover beams often adopts the steel bar method and the hoop method. The steel rod method refers to that the columnar steel structure (such as steel rod) is penetrated into the reserved hole of the bridge pier, and the construction formwork of the cover beam is supported by vertical columns on both sides (vertical column supports include I-beams, round steel, jacks, etc.) etc.) and spot-welded bolts are placed on the columnar steel structure, and the construction load of the cover beam, the load of temporary facilities, and the self-weight of the cover beam are transmitted to the bridge pier through the columnar steel structure. The hoop method refers to the use of two semicircular s...

AI Technical Summary

Problems solved by technology

[0003] In the steel bar method, since the connection form of the vertical support and the horizontal steel bar is spot welding, its shear bearing capacity and anti-overturning bearing capacity are weak, and a small eccentricity in the construction process will cause the spot weld to bear a large force. Shear stress causes spot welds to be sheared and damaged, which is not conducive to construction safety

Moreover, the traditional steel bar method is difficult to construct, and the quality of spot welds is high, which puts forward higher requirements for the technical level of welding workers.

In addition, the recycling rate of construction equipment is low, which does not meet the concept of green construction

[0004] In the hoop method, the vertical friction force generated at the contact surface of the steel hoop and the pier bears the loads such as the construction load of the cover beam, the load of temporary facilities, and the self-weight of the cover beam. However, during the construction process, the friction force between the steel hoop and the pier column Can cause damage to the surface of the piers, affecting the appearance of the structure

Moreover, during the construction process, the steel hoop is prone to vertical displacement, which will cause the displacement of the cover beam formwork and affect the construction quality of the cover beam.

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