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Assembling technology of equal-height double-box combined girder structure

A technology of composite beams and contours, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as unfavorable economic benefits, low lateral stiffness, and increased engineering investment, and achieve high synchronization, precision and performance requirements High, even force effect

Pending Publication Date: 2019-10-15
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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  • Application Information

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Problems solved by technology

[0007] Among them, plan 1 is designed with reference to the experience and parameters of traditional jacking construction operations. The jacking construction technology is mature, but the steel box girder of this bridge is a structure of super high and super wide double boxes and double rooms. Complicated, increasing engineering investment, heavy process, not conducive to economic benefits

Method used

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  • Assembling technology of equal-height double-box combined girder structure
  • Assembling technology of equal-height double-box combined girder structure
  • Assembling technology of equal-height double-box combined girder structure

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Embodiment Construction

[0042] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0043] see Figure 1-4 , the assembly process of the double-box composite beam structure with the same height, including the following steps:

[0044] S1. Steel box girder transportation and lifting:

[0045] After the single-width steel box girder is assembled and painted, the finished steel box girder is transported to the steel box girder lifting area by a beam transporter, and then the steel box girder is connected to the welding platform through a traverse device. The steel box girder is lifted and hoisted to the welding platform, and the plane position and elevation are adjusted in place.

[0046] S2. The steel box girder is installed in place

[0047] S3. When installing the first section of the steel box girder, use the gantry crane to hoist the steel box girder of the first section to the corresponding position of the assembly welding p...

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Abstract

The invention discloses an assembling technology of an equal-height double-box combined girder structure. The technology specifically comprises the following steps of, S1, transporting and lifting a steel box girder; S2, mounting the steel box girder in place; S3, welding the steel box girder; S4, jacking and pushing the steel box girder; and S5, falling the girder. According to the technology, the problem of stress limitation of the steel box girder can be effectively solved, smooth construction can be guaranteed, a jacking and pushing device is provided with a vertical jack, so that a vertical linear change of the girder body can be well adapted, a bearing reaction can be adjusted at any time, stress uniformity of all supporting points is guaranteed, the synchronism requirement of the vertical and horizontal jacks is high, and the precision and performance requirements of a synchronous control system are high.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to an assembly process of a contoured double-box composite beam structure. Background technique [0002] The continuous laminated beam of the main bridge is a double-box composite beam of equal height, with a beam height of 6.5m, a roof width of 46.6m, and a floor width of 2×13.61m. After the steel box girder components are processed in the factory, they are transported to the steel box girder assembly plant of the project department for assembly, and then installed after forming. There are many methods for steel box girder installation, such as: multi-point temporary support pier dragging jacking method, walking jacking method, and the construction methods are compared as follows: [0003] Scheme 1: Multi-point continuous jacking construction scheme for four-slide flexible pier [0004] A steel box girder jacking welding platform is built on the west bank of the main bridge, an...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D21/06E01D2/04
CPCE01D2/04E01D21/00E01D21/06
Inventor 朱淑兰黄忠睦刘明友吴宇何鹏覃晶
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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