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Method for transferring hoisting-point loads

A transfer method and point load technology, which is applied in the direction of construction, building structure, and building material processing, can solve problems such as large safety, transfer, and hidden dangers, and achieve good results, high safety factors, and strong economical practicability

Active Publication Date: 2011-04-20
MCC5 GROUP CORP SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the lifting process of large trusses, it is inevitable that there will be a transfer of the load at the lifting point. At present, the usual practice is to simply use the lifting device to transfer, which has a large potential safety hazard

Method used

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  • Method for transferring hoisting-point loads
  • Method for transferring hoisting-point loads
  • Method for transferring hoisting-point loads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Now a hangar needs to be hoisted. The hangar is a double-layer grid structure with a bottom-hung gate truss. The lifting is divided into two steps: After the overall assembly of the grid frame and the upper part of the truss is completed, the first lift is started. When the bottom layer of the grid frame is 6m away from the bottom surface, the lifting is stopped, each lifting point is locked, and the installation of the hanging truss is started. After the completion, the lifting point at the truss is transferred from the bottom of the upper truss to the bottom of the lower truss. After the transfer of the lifting point is completed, the second lifting is started, and the whole network frame is directly raised to the design elevation.

[0019] The load of the lifting point of the grid frame is transferred from the bottom of the upper truss to the bottom of the lower truss. At this time, it is the load transfer of the lifting point. The load transfer method of the lifting ...

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Abstract

The invention relates to the field of steel structure installation, in particular to a method for transferring hoisting-point loads. The method comprises the following steps in sequence: a, setting buttresses at lower hoisting points; b, unloading; and c, dismantling upper hoisting points. The method is characterized in that in the step of setting the buttresses at the lower hoisting points, each buttress is composed of an upper support plate (1), a lower support plate (2), four reinforcing plates (3) and three wedge-shaped anchor support sheets (4), wherein the middle part of the upper support plate (1) is provided with a round hole, the upper support plate (1) and the lower support plate (2) are fixedly connected by the four reinforcing plates (3), the four reinforcing plates (3) are all arranged outside the round hole at the middle part of the upper support plate (1), and the three wedge-shaped anchor support sheets (4) are fixed at the edge of the round hole at the middle part of the upper support plate (1) and distributed averagely along the circumference of the round hole. The method provided by the invention has the advantages of high safety coefficient, reliable and advanced technology, strong economic practicability, and capability of effectively reducing the security risks existing in the process of transferring hoisting points.

Description

technical field [0001] The invention relates to the field of steel structure installation, in particular to a lifting point load transfer method. Background technique [0002] In recent years, due to the support of modern technology and the addition of new materials, large-scale space steel structures such as grid frames, reticulated shells, and pipe truss structures have been widely used in sports venues, convention centers, theaters, large shopping malls, factory workshops, etc. . Taking the Boeing hangar as an example, the hangar is a double-layer grid structure, which is a bottom-hung gate truss. The net frame adopts the overall lifting construction plan. Since the truss is divided into upper and lower parts, and the height of the lower hanging part reaches 5m, the whole net frame is lifted twice. During the lifting process of large trusses, it is inevitable that there will be load transfer at the lifting point. The current common practice is to simply use the lifting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/14
Inventor 许书贤
Owner MCC5 GROUP CORP SHANGHAI
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