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Method for turning over heavy bridge girder steel tower section

A bridge steel tower and section technology, which is applied in the field of turning over heavy bridge steel tower sections, can solve the problem that the lifting capacity is difficult to achieve, and achieve the effect of reducing the lifting capacity requirement

Active Publication Date: 2014-10-08
WUCHUAN HEAVY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the steel tower segment of this structure, if the segment is turned over 90 degrees from the lying state and the beam segment can be hoisted for precise positioning, then the lifting capacity of the in-span crane must be more than 500 tons, and this lifting capacity is very large. Difficult to reach

Method used

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  • Method for turning over heavy bridge girder steel tower section
  • Method for turning over heavy bridge girder steel tower section
  • Method for turning over heavy bridge girder steel tower section

Examples

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Embodiment Construction

[0018] see Figure 1-Figure 7 , an embodiment of the present invention provides a method for turning over a steel tower segment of a heavy bridge, including:

[0019] Step 10, see figure 2 , select or make the rotating bracket 2, select the boring and milling machine 3; fix the rotating bracket 2 on the boring and milling machine 3. The rotating bracket 2 is a frame structure made of steel. In this embodiment, the rotating bracket 2 is fixed on the boring and milling machine 3 through a pressing plate.

[0020] Step 20, see figure 1 and figure 2 , select or manufacture the supporting steel pier 1, and set the supporting steel pier 1 in the working area of ​​the boring and milling machine 3. The position setting of the supporting steel pier 1 must satisfy that the bridge steel tower segment 4 can be placed on the supporting steel pier 1 and the rotating support 2 at the same time. The number of supporting steel piers 1 is determined according to the size and weight of t...

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Abstract

The invention relates to the technical field of bridge girder manufacturing, in particular to a method for turning over a heavy bridge girder steel tower section. The method comprises the steps that a rotating support is selected or manufactured, a boring-milling machine is selected, and the rotating support is fixed on the boring-milling machine; a supporting steel pier is selected or manufactured and arranged in a work area of the boring-milling machine; a rotating hinge shaft is selected or manufactured, fixed at the front end of the bridge girder steel tower section, and installed on the rotating support; the bridge girder steel tower section is placed on the supporting steel pier; a crane is connected with the rear end of the bridge girder steel tower section; the crane lifts the bridge girder steel tower section, and the front end of the bridge girder steel tower section rotates around the rotating hinge shaft so that the bridge girder steel tower section can be turned over by 0 degree to 90 degrees. According to the method for turning over the heavy bridge girder steel tower section, the rotating support provides some supporting force for the bridge girder steel tower section, the requirement for the lifting capacity of the crane is lowered, and the heavy bridge girder steel tower section can be lifted by utilizing the crane low in lifting capacity.

Description

technical field [0001] The invention relates to the technical field of bridge manufacturing, in particular to a method for turning over a steel tower segment of a heavy bridge. Background technique [0002] At present, the installation of some large-scale bridge steel towers is generally connected by end-face tightening and high-strength bolt bolting between the segments. Therefore, the bolted surfaces of the segments must be processed on the machine tool, especially for the bottom segment. (Segments anchored to concrete tower foundations). Taking the steel tower of the Hong Kong-Zhuhai-Macao Bridge as an example, the bottom section has an overall size of 10624×10624×3450mm and a weight of about 500 tons. It has the characteristics of large cross-section, heavy weight, irregular structure and lower center of gravity. For the steel tower segment of this structure, if the segment is turned over 90 degrees from the lying state and the beam segment can be hoisted for precise po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/14
Inventor 陈家菊祝李元裴建顺张虎郑慧
Owner WUCHUAN HEAVY ENG
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