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Construction method of hoisting and positioning device modified by corrugated steel web asynchronous hanging basket

A corrugated steel web and construction method technology, which is applied in the erection/assembly of bridges, buildings, bridge construction and other directions, can solve the problems such as the long tower crane arm cannot be constructed, the influence of wind force is large, and the installation and positioning are complicated, so as to achieve low construction cost, The effect of small wind influence and high safety factor

Active Publication Date: 2022-05-03
ZHEJIANG COMM CONSTR GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]When the bridge is under special topography, such as high-altitude mountainous areas, near the coastline, the construction of corrugated steel webs has the following problems: (1) Under special terrain, due to The beam span is large, and the length of the tower crane arm is limited, so construction cannot be carried out; (2) When the corrugated steel web is installed downward, the corrugated steel web is manually supported for positioning and installation, which is greatly affected by the wind force, and the installation and positioning are complicated, poor in stability, and dangerous. high coefficient

Method used

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  • Construction method of hoisting and positioning device modified by corrugated steel web asynchronous hanging basket
  • Construction method of hoisting and positioning device modified by corrugated steel web asynchronous hanging basket
  • Construction method of hoisting and positioning device modified by corrugated steel web asynchronous hanging basket

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Effect test

Embodiment 1

[0031] The asynchronous hanging basket of the corrugated steel web is refitted with a hoisting and positioning device, and the corrugated steel web is constructed using an asynchronous hanging basket refitted lifting device. The board slides from the rear end of the longitudinal track beam to the front end through the slide rail trolley and then lowers down. During the lowering installation process of the corrugated steel web, a guide protection device is used for auxiliary installation to prevent swinging and deflection due to the influence of wind force during lowering and assembling. The installation and positioning operation is simple. It has good economic and technical benefits.

[0032] Such as Figure 1-2 As shown, the corrugated steel web asynchronous hanging basket modification hoisting and positioning device includes the nth section box girder 1, screw rod 2, steel wire rope 3, limit plate 4, hanging basket column 5, hanging basket crossbeam 6, steel column 7, Longi...

Embodiment 2

[0040] The construction method for modifying the hoisting and positioning device of the corrugated steel web asynchronous hanging basket includes the following steps:

[0041] (1) Hanging basket modification: During the construction process of the n-section box girder 1, the screw rod 2 is set in advance, the upper part of the hanging basket is removed, the hanging basket column 5 and the hanging basket crossbeam 6 are reinforced, and the hanging basket column 5 is pre-installed. Drill holes for equipment installation.

[0042] (2) Welding of the main frame: the steel column 7, the longitudinal track beam 8, and the main beam 9 are prepared in advance in the factory according to the design size, and after they are transported to the site, the steel column 7 and the main beam 9 are welded on the ground Form a film frame, hoist the whole film frame to a predetermined position on the refitted asynchronous hanging basket, weld the steel column 7 and the hanging basket beam 6, and ...

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Abstract

The invention relates to a construction method for refitting a hoisting and positioning device for a corrugated steel web asynchronous hanging basket, comprising steps: S1, refitting the hanging basket; S2, welding the main body frame; S3, welding the longitudinal rail beam; S4, installing a guide protection device; S5, waveform The rear end of the steel web longitudinal girder is hoisted and slipped; S6, the corrugated steel web is lowered; S7, the corrugated steel web is positioned and fixed; S8, the steel bar is bound, and the concrete is poured. The beneficial effects of the present invention are: the corrugated steel web of the present invention adopts the asynchronous hanging basket to modify the hoisting device for hoisting construction, the main structure of the hanging basket is used as the load-bearing foundation, the hoisting device moves synchronously with the hanging basket, no separate power is needed, and the corrugated steel web The plate is conveniently transported horizontally and the construction cost is low; the guide protection device of the present invention assists the lowering of the corrugated steel web for guiding and positioning installation without manual support, the corrugated steel web is easy to install, is less affected by wind force, and has a high safety factor.

Description

technical field [0001] The invention relates to a construction method for modifying a hoisting and positioning device for a corrugated steel web asynchronous hanging basket, which is mainly suitable for the construction of asynchronous hanging basket corrugated steel web girder bridges with large spans and limited range of tower cranes. Background technique [0002] Corrugated steel web concrete composite bridge is a novel bridge that appeared in the 1980s. The main advantage of this new type of bridge is that it reduces the weight of the box girder and realizes the lightweight superstructure. The corrugated steel web often needs to cooperate with The asynchronous hanging basket is used for construction, and the construction sequence adopts n-segment bottom plate, n-1 segment top plate, and n+1 segment corrugated steel web in parallel construction, and the parallel operation points are multi-faceted and efficient. [0003] When the bridge is in a special terrain, such as a h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D21/10
CPCE01D21/00E01D21/10
Inventor 何杨闽凌环宇翁杨朱晨亮李重莹曹明雄
Owner ZHEJIANG COMM CONSTR GRP CO LTD
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