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Construction technology for large-diameter pipeline crossing construction catwalk

A construction technology and catwalk technology, which is applied in the erection/assembly of bridges, bridges, buildings, etc., can solve the problems of long catwalk high-altitude operations, inconvenient transportation of materials and personnel, and long construction period, so as to reduce the risk of high-altitude operations , Improve the effect of catwalk prefabrication and installation level and efficiency

Active Publication Date: 2016-05-25
SICHUAN GASOLINEEUM CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional erection method of the catwalk usually needs to wait for the construction of the bridge tower to be completed before aerial fabrication. The overall construction period is long, the catwalk works at height for a long time, and the transportation of materials and personnel is inconvenient

Method used

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  • Construction technology for large-diameter pipeline crossing construction catwalk
  • Construction technology for large-diameter pipeline crossing construction catwalk
  • Construction technology for large-diameter pipeline crossing construction catwalk

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] like figure 1 As shown, the construction process of the large-scale pipeline crossing the construction catwalk includes the following steps: A. Scheme prefabrication: According to the landform characteristics that require the pipeline spanning construction, the force analysis of the tower 1 and the catwalk is carried out, and the offset value of the tower 1 is obtained and catwalk force parameters to determine the process steps; A1, catwalk prefabrication: catwalks include mutually independent mid-span catwalk 3 and side-span catwalk 2, prefabricated mid-span catwalk 3 and side-span catwalk 2, in During the pouring construction stage of the tower 1, fix the mid-span catwalk 3 between the two towers 1; A2, the alignment of the catwalk and the verticality adjustment of the tower 1: install the side-span catwalk 2 on the tower 1, and Adjus...

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Abstract

The invention discloses a construction technology for a large-diameter pipeline crossing construction catwalk, and relates to the technical field of construction of suspension cable type crossing bridges of pipelines. The construction technology for the large-diameter pipeline crossing construction catwalk comprises the steps of pre-making a scheme, prefabricating catwalks, adjusting the catwalk line shape and the tower perpendicularity and lifting the overall catwalks, provides an installation method for a construction passageway (catwalk) for a main cable by adopting aerial prefabricating methods like long-span crossing PPWS, and effectively reduces the overhead installation and overall construction period of catwalks.

Description

technical field [0001] The invention relates to the technical field of construction of pipeline suspension bridges, in particular to a construction technique for large pipelines spanning construction catwalks. Background technique [0002] Due to its low investment and mature construction technology, the suspension cable spanning structure is widely used in the spanning structure. The suspension cable spanning structure is composed of a substructure and a superstructure. The substructure is mainly composed of pile foundations, anchorages, and caps. The superstructure is mainly composed of hinged steel towers, main cable systems, truss bridge bodies, wind cable systems, and pipelines And so on. [0003] With the trend of large-scale pipeline installation, tower structures with strong bearing capacity such as reinforced concrete are also widely used in pipeline spanning structures. At the same time, with the trend of large-scale pipeline spanning, the load of the pipeline br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 张杰王学军罗子波王志强来阳月星何静云徐云川
Owner SICHUAN GASOLINEEUM CONSTR ENG
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