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Box girder flipping method

A box girder and overturning tire frame technology is applied in auxiliary devices, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., which can solve the problems of box girder structure damage, large overturning force, and difficulty in overturning.

Inactive Publication Date: 2011-12-21
WUHAN YIYE STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the steel box girder overturning device has a square structure, it is not easy to overturn, and the overturning force required during the overturning process is relatively large, and the overturning process may cause damage to the box girder structure

Method used

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Experimental program
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Embodiment Construction

[0033] A method for overturning a box girder, comprising the steps of:

[0034] Step 1. Preparation before operation:

[0035] 1.1 Design of the overturn tire frame scheme

[0036] According to the weight and peripheral dimensions of the box girder components, the capacity and height of the lifting equipment, design and manufacture at least two overturned tire racks;

[0037] 1.2 Lift one end of the assembled box girder, use H-shaped steel to raise the box girder, and then lift the other end, and also use H-shaped steel to raise the box girder, so that the whole section of the box girder is carried by two shaped steel; When it is high, the height is greater than the distance from the flange surface of the inverted tire frame to the outer end of the T-beam;

[0038] Step 2, formal operation:

[0039] 2.1 Put the two overturned tire racks on the left and right ends of the box girder respectively, tighten the bolts, then hoist the two ends of the box girder in sequence with a ...

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Abstract

The invention relates to a method for overturning a box beam. A round overturning jig frame is designed, the box beam can be arranged in the overturning jig frame, and the performance that the overturning jig frame can roll is fully utilized, so that the box beam can be overturned and rolled, and can reach any angle, and further the welding and the drilling are convenient. The invention also limits a structure of the round overturning jig frame specifically. By utilizing the technical scheme in the invention, the impact damage can not be generated for hoisting mechanical equipment, in construction operation, the operation is simple and fast, the use is reliable and light, and the safety guarantee is reliable, and the cost is low. In addition, since the overturning is convenient, the optimal position of the welding at the ship-shaped welding can be guaranteed, the internal quality of welded seams can meet the requirements, the appearance quality of members can not generate distortion and deformation, and the internal quality also can not be damaged. On another aspect, the drilling also needs to keep the drilling surface upward all the time, which can be easily achieved by utilizing the overturning jig frame.

Description

technical field [0001] The invention relates to a component overturning method, in particular to a method for overturning a box girder by using a circular overturning tire frame. Background technique [0002] Box girder is a kind of beam in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, which is similar to a box, hence the name. In the process of bridge construction, the box girder has the advantages of fast construction speed and high overall strength of the bridge. Steel box girders, in particular, are commonly used structural forms for long-span bridges. [0003] Since steel box girders are generally ultra-wide and ultra-long members, it is very difficult to turn over directly by driving in the production unit, which will cause hidden dangers in the bending quality of the box girder steel plate and low production efficiency. [0004] In order to solve this problem, the Chinese utility model patent with the publication number CN ...

Claims

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Application Information

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IPC IPC(8): B23K37/047
Inventor 田一堂李学文卢灿
Owner WUHAN YIYE STEEL STRUCTURE
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