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Steel arch rib outer wrapped concrete construction method for steel trussed arch bridge

A technology of outsourcing concrete and construction method, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult to control the quality of concrete construction, difficult construction of outsourced concrete, complicated supporting erection process, etc., so as to improve the overall construction Quality, overcoming narrow scope of application, strong applicability and economical effect

Active Publication Date: 2016-02-24
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in practical application, due to the influence of various factors such as the slope, size, and operating space of the steel arch rib, the construction of the outsourced concrete is very difficult and the quality of the concrete construction is difficult to control.
Moreover, the existing support erection method can only be used in the general situation with good terrain conditions, and cannot be erected at all for situations such as mountainous valleys or crossing rivers, and the scope of application is narrow; in addition, the erection process of the support is complicated and difficult to use Time variability, poor construction safety

Method used

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  • Steel arch rib outer wrapped concrete construction method for steel trussed arch bridge
  • Steel arch rib outer wrapped concrete construction method for steel trussed arch bridge
  • Steel arch rib outer wrapped concrete construction method for steel trussed arch bridge

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0033] The invention provides a method for erecting a side-span steel truss girder of a cable-stayed bridge, comprising the following steps:

[0034] S1: see figure 1 As shown in , the steel arch rib is divided into several steel arch rib segments along the direction of the bridge; see figure 2 As shown, each steel arch rib segment is divided into the first ring construction section and the second ring construction section from bottom to top, go to S2.

[0035] S2: see image 3 As shown, the bottom formwork 9 is laid at the bottom of the steel arch rib section to be poured, and the reaction force seat 2 and the boom 3 are welded on the lower chord of the steel arch rib section to be poured, and the reaction force seat 2 and the suspension rod are used to The hanger system is installed on the pole 3. The hanger system includes a beam 10, a ...

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Abstract

The invention discloses a steel arch rib outer wrapped concrete construction method for a steel trussed arch bridge and relates to the technical field of building construction of steel trussed arch bridges. The construction method includes the steps that each steel arch rib section to be poured with concrete is provided with a hanging bracket system and a bottom formwork; after installation is finished, bottom board reinforcing steel bars are tied; each hanging bracket system is used for erecting a construction support and an operation platform, web reinforcing steel bars and a web formwork of a first ring construction section are installed, and the outer wrapped concrete is poured to the first ring construction section; after the concrete is poured, an inner cavity support and a platform are erected, a high construction support and an operation platform are connected, reinforcing steel bars and a formwork of a second ring construction section are installed, and the outer wrapped concrete is poured to the second ring construction section; and after the concrete is poured, outer wrapped concrete construction of the next steel arch rib section is started, and the operation is repeated till the concrete is poured to all the steel arch rib sections. By the adoption of the method, the construction difficulty is lowered, the application range is wide, construction efficiency is effectively improved, construction safety is guaranteed, and adaptability and economical efficiency are high.

Description

technical field [0001] The invention relates to the technical field of construction of steel truss-arch bridges, in particular to a construction method for steel arch ribs wrapped in concrete for steel truss-arch bridges. Background technique [0002] As one of the structural forms of long-span bridges, steel truss-arch bridges have been used more and more because of their various forms and large applicable spans. At present, in the construction process of steel truss arch bridges, in order to reduce the cost of steel truss arch bridges and make them economical and applicable, more and more steel truss arch bridges use steel arch ribs as the stiff skeleton, and outsourced concrete to form a steel-concrete bridge. Combine arch ribs. This kind of steel-concrete combined arch rib not only gives full play to the role of the steel structure, but also effectively reduces the construction cost, which has been widely recognized by the industry. [0003] However, in practical appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 朱运宗李继有李艳哲王跃年杨文涛王刚周宇雷超范阳元朱龙周燕飞
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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