Construction process of large-span steel tube arch bridge without supports

A steel pipe arch bridge, the technology of construction technology, applied in the direction of arch bridge, bridge, bridge form, etc.

Active Publication Date: 2015-05-06
NO 1 ENG LIMITED OF CR20G
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But how to safely and reliably hoist the monolithic arch rib and rigid frame in the long-span steel pipe arch bridge and how to pour the arch rib and tie rod co

Method used

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  • Construction process of large-span steel tube arch bridge without supports
  • Construction process of large-span steel tube arch bridge without supports
  • Construction process of large-span steel tube arch bridge without supports

Examples

Experimental program
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Embodiment Construction

[0112] Such as Picture 1-1 The long-span steel pipe arch bridge has no support construction technology, and the long-span steel pipe arch bridge constructed is a tie-bar arch bridge erected on the river 22, combined with figure 1 , figure 2 , image 3 and Figure 8 , the tied arch bridge includes a bridge lower support structure 23 and a bridge superstructure supported on the bridge lower support structure 23, and the bridge superstructure includes an arch rib 1 and a tie rod connected between the two arch feet of the arch rib 1 19. The tie rod 19 is located directly under the arch rib 1 and has a stiff skeleton 14 inside it. The rigid frame 14 is a rigid frame that reinforces the tie rod 19 and is assembled from a plurality of rods. Both ends of the rigid frame 14 are fastened to the two ends of the arch rib 1 respectively. The arch rib 1 is a steel pipe concrete structure and it is composed of an arched steel pipe support and a concrete structure poured in the arched s...

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PUM

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Abstract

The invention discloses a construction process of a large-span steel tube arch bridge without supports. The constructed large-span steel tube arch bridge is a tied-arch bridge erected on a river channel. A bridge upper structure of the tied-arch bridge comprises arch ribs and tie bars connected between every two arch pins of the arch ribs. Rigid frameworks are arranged in the tie bars. The construction process includes the following steps of firstly, splicing the single-piece arch ribs and the rigid frameworks of the tie rods on the land, wherein arch-shaped steel tube supports of the arch ribs and the rigid frameworks are spliced on a splicing field on a bank side of the river channel; secondly, hoisting the single-piece arch ribs and the rigid frameworks of the tie rods together and placing the arch ribs and the rigid frameworks in place; thirdly, constructing the arch ribs through concrete, wherein the arch pins and end beams are constructed, and concrete is symmetrically pressed and poured for the arch ribs; fourthly, conducting pouring through a tie rod concrete suspended form method; fifthly, installing middle beams. The construction process is simple in process step, reasonable in design, convenient to construct and good in construction effect; the construction process of the large-span steel tube arch bridge without supports can be easily, conveniently and rapidly completed without greatly influencing the navigation of the river channel.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a support-free construction technology of a large-span steel pipe arch bridge. Background technique [0002] The design level of the Shenzhang Line-Zhangjiagang double track channel is Class III, and the navigable hole requirement is (90×7)m. The intersection angle between the newly-built Gongnong Bridge and the center line of the channel is 90°. If the support cast-in-place scheme is adopted for the construction of the new Gongnong Bridge, (2×25)m navigation holes must be set on the approach channel upstream of the lock. The center of the channel is located at the bend of the Sancha River estuary. During the construction of the bridge, it will inevitably affect the navigation of the channel. At the same time, there is a safety hazard of passing ships colliding with the bracket. [0003] The superstructure of the main bridge of the newly built Gongnong Br...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D4/00E01D21/00
Inventor 张记军杜越丁大友李洁勇张广义陈会景张睿强严朝锋王永丽杨利清
Owner NO 1 ENG LIMITED OF CR20G
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