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Construction Control Method of Bridge Steel Tube Arch Rib

A technology of steel pipe arch ribs and control methods, applied in the direction of bridges, bridge forms, bridge construction, etc., to achieve the effect of ensuring smooth progress

Active Publication Date: 2022-05-24
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technical solution only proposes simple steps for construction. In the actual construction process, technicians are required to do a lot of work such as data monitoring and simulation calculations, which puts forward higher requirements for the construction team.

Method used

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  • Construction Control Method of Bridge Steel Tube Arch Rib
  • Construction Control Method of Bridge Steel Tube Arch Rib
  • Construction Control Method of Bridge Steel Tube Arch Rib

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] A construction control method for bridge steel pipe arch ribs, including:

[0071] (1) Establish a three-dimensional model of arch rib segments and number the arch rib segments sequentially;

[0072] (2) Before hoisting the arch rib segment, the temperature measurement of the arch rib segment is carried out, and the actual position of the arch rib segment is measured after the hoisting of the arch rib segment is completed, and the installation interval of the arch rib segment is recorded;

[0073] (3) In the three-dimensional model of arch rib segment, the deformation of arch rib segment after installation is calculated by the steady-state temperature field expression of arch rib segment, and the minimum time period of arch rib segment deformation is predicted according to the meteorological and hydrological data of the construction site;

[0074] (4) According to the deformation data, the expected time of Helong and the position size of Helongkou are obtained, and then the...

example

[0085] (1) Project overview

[0086] The angle between the head and tail of the steel pipe arch bridge of a four-limb truss is 15°; the main hole calculates the span diameter of 560m, and the radial height of the vault section is 8.5m; the radial height of the arch foot section is 17m, the rib width is 4.2m, and each rib is two φ1400mm steel tube concrete string pipes. The arch ribs of the bridge are divided into two sides of the south bank and the north bank, and each side is divided into 11 arch rib sections. The façade of the bridge is as follows Figure 1 as shown.

[0087] (2) Temperature monitoring

[0088] On April 9, 2020, the bridge measured the temperature of some sections of the arch rib section after the arch ribs were closed, and collected the temperature of the left lower chord of the 6# arch rib section upstream of the north shore, the left left side of the left upper left of the 1# arch rib on the south bank, the left left of the left upper left of the 8# arch rib o...

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Abstract

The invention discloses a method for controlling the construction of a bridge steel pipe arch rib, which includes: (1) establishing a three-dimensional model of the arch rib segment and sequentially numbering the arch rib segment; (2) prior to hoisting the arch rib segment, Carry out temperature measurement, and measure the actual position of the arch rib segment after the hoisting of the arch rib segment is completed, and record the installation time interval of the arch rib segment; (3) In the three-dimensional model of the arch rib segment, through the The segmental steady-state temperature field expression calculates the segmental deformation of the arch rib after installation, and predicts the minimum time period for the segmental deformation of the arch rib according to the meteorological and hydrological data of the construction site; And within the expected time to complete the arch rib segment closure construction work. The invention provides effective support for the closing construction by tracking the deformation of the arch rib segment under illumination and estimating and predicting the best closing time, so as to ensure the smooth progress of the closing and the quality of the closing.

Description

Technical field [0001] The present invention belongs to the field of bridge construction technology, specifically relates to a bridge steel pipe arch rib construction control method. Background [0002] At present, there are more and more bridges, and for long-span arch bridges, most of them are constructed in the form of symmetrical suspension from both sides of the strait to the vault helong. Vault Helong is generally observed in the deformation of the arch bridge for a few days before helong, so as to select the appropriate size of the dragon mouth and the temperature time of the dragon, which reduces the impact of factors such as the stress state of the arch rib and the temperature change of the helong to a certain extent, but the small data of the observation data sample is uncertain, the stress change, the temperature impact change and other methods and processes that do not establish suitable monitoring and control are not established, and the final construction effect is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20E01D21/00E01D4/00G06F30/13G06F30/23
CPCE01D21/00E01D4/00G06F30/13G06F30/20G06F30/23
Inventor 杨涛廖辉郝天之邓年春胡显辉
Owner GUANGXI UNIV