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Lifting installation method of integral bridge arch rib

An installation method and overall upgrading technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as complex stress, long construction period, and increased difficulty of bridge construction, and achieve the effect of reducing impact and construction difficulty

Active Publication Date: 2011-05-25
CHINA RAILWAY GUANGZHOU ENG GRP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] When the span of the bridge arch rib exceeds 100 meters, the commonly used bridge arch rib erection methods are mainly cable crane hoisting or swivel construction method. Due to the site requirements of the swivel construction method, there must be a site where the bridge can be assembled , so the swivel construction method will be limited by the geographical location, while the hoisting of the cable crane requires a large investment in the construction, the construction period is long, and the river needs to be occupied for a long time. There are many complex and unclear force factors, which greatly increase the risk control points of construction safety and increase the difficulty of bridge construction

Method used

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  • Lifting installation method of integral bridge arch rib
  • Lifting installation method of integral bridge arch rib
  • Lifting installation method of integral bridge arch rib

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Experimental program
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Embodiment approach

[0053] As a preferred embodiment of the present invention, step 2) includes the following steps:

[0054] , Pre-embed the embedded parts of the tower at the cap of the main pier 2, and pre-embed the shaped steel as the anchoring device for the tower, and pre-embed the shaped steel in the front and rear of the tower as the tower cable wind;

[0055] , Reserve a hole at the tower position of the main beam at the main pier 2;

[0056] , The front tower is directly welded on the embedded section of the arch rib.

[0057] As a preferred embodiment of the present invention, step 3) includes the following steps:

[0058] , Use the overturned formwork to construct the arch foot section, connect the main pier into a whole through temporary connection, and reserve holes as the positions of the tower columns during the bridge deck construction process;

[0059] 1. Use the floating crane to assemble the bracket and the arch foot segment, tighten the front and rear cable winds,...

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Abstract

The invention discloses a lifting installation method of an integral bridge arch rib, which has the technical scheme that: a lifting support is arranged at a main pier or arch springing, hoists the arch springing after corresponding to the two ends of the arch springing, and does not to be arranged at the middle part of a bridge, so the times for transporting the arch springing is reduced, one transportation is only needed, and the hoisting is accurate, thus the influence of the bridge construction on riverway navigation is reduced, the occupied time and the space of the riverway navigation are reduced, and higher economical benefit is brought.

Description

technical field [0001] The invention relates to a hoisting technology of bridge arch ribs, in particular to a method for overall lifting and installation of bridge arch ribs. Background technique [0002] In bridge construction, the erection method of bridge arch ribs For bridge arch ribs with a span of less than 100m, the hoisting and installation method is generally to divide the entire bridge arch rib into three sections, and then hoist them to the designed position after pre-assembly section by section. Then weld and fix each section to complete the installation of the bridge arch rib. The weight of the segmented hoisting is generally only a dozen tons, which can be hoisted by floating cranes, truck cranes, etc., and the side sections are buckled by buckles to close them. , and can also be supported by a small amount of brackets. [0003] When the span of the bridge arch rib exceeds 100 meters, the commonly used bridge arch rib erection methods are mainly cable crane ho...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 林世发陈永宏苏辉廖云沼孙迎春王杰何则林胡平生
Owner CHINA RAILWAY GUANGZHOU ENG GRP CO LTD
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