Deck type arch bridge construction method based on steel arch support

Abstract

The invention discloses a deck type arch bridge construction method based on a steel arch support. The constructed deck type arch bridge comprises a left arch rib and a right arch rib which are symmetrically arranged. When the constructed deck type arch bridge is constructed, the method comprises the steps of 1, constructing a bridge lower supporting structure; 2, constructing the arch ribs, wherein a steel arch support bearing is constructed, a translation sliding way and a lifting device are installed, the steel arch support is assembled, an arch supporting frame is jacked, the arch ribs areconstructed at first, the arch supporting frame is placed down, a translation drive device is installed, the arch supporting frame is moved transversely, the arch supporting frame is jacked, and post-construction arch ribs are constructed; 3, performing follow-up construction. The deck type arch bridge is reasonable in design, easy and convenient to construct and good in using effect; the steel arch support is adopted for constructing the arch ribs in success, an arch support bracket and the translation device are adopted for supporting and transversely moving the steel arch support, the construction process of the two arch ribs can be easily, conveniently and rapidly completed, the construction process is safe and reliable, and the construction efficiency of the deck type arch bridge canbe effectively improved.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a construction method of an overhead arch bridge based on a steel arch frame. Background technique [0002] The overhanging arch bridge is a bridge whose deck is set on the main load-bearing structure of the bridge span (that is, the arch rib). At the junction of the bedrock, both ends of the arch ribs of the upward arch bridge are supported on the abutment, which is an important component supporting the structure on the arch. The abutment used to support the arch rib is a permanent support, which is generally a reinforced concrete structure supported on the bedrock. Among them, the arch rib is also called the main arch or the arch ring. For the construction of the box-type box arch bridge whose arch rib is reinforced concrete arch ring, the arch rib usually adopts the pre-erected steel arch frame for cast-in-place construction; After the ribs are poured...

AI Technical Summary

Problems solved by technology

[0004] But nowadays, when the steel arch is moved horizontally, the construction operation is relatively random, there is no uniform and standardized horizontal installation equipment and horizontal moving method, and the steel truss is large in size and heavy, and the steel truss is difficult to move laterally , during the traversing process, there will inevitably be problems such as complex traversing process, unstable steel truss, and slow traversing speed, and the steel truss is not easy to support after the traversing is in place.

At the same time, when removing the steel arch from under the poured arch rib, since the steel truss is firmly supported on the bottom of the poured arch rib, it is very difficult to remove the steel truss from under the arch rib, and the removal process It will inevitably cause deformation of the steel truss, and even cause damage to the steel truss

For example, when constructing the Xialaoxi Bridge located in the center of Sanyoudong Scenic Area, due to the limited construction site and serious traffic congestion, the construction difficulty was further increased, and the two arch ribs could not be constructed at the same time, and the construction period could not be guaranteed

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