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U-shaped tool device for prestressed steel structure tensioning construction and construction method

A prestressed steel and tensioning technology, which is applied in building construction, building material processing, construction, etc., can solve the problems of limited pre-tensioning force and large volume, and achieve integrity assurance, clear force transmission route, and complex changes The effect of bulky craftsmanship

Inactive Publication Date: 2010-09-29
BEIJING ACAD OF BUILDING ENG
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a U-shaped tooling device and construction method for prestressed steel structure tensioning construction, to solve the technical problems that the traditional prestressed steel structure tensioning device has a large volume and limited pretensioning force; and solve the problem of precise control The problem with the pretension value

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  • U-shaped tool device for prestressed steel structure tensioning construction and construction method
  • U-shaped tool device for prestressed steel structure tensioning construction and construction method
  • U-shaped tool device for prestressed steel structure tensioning construction and construction method

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Embodiment Construction

[0037] Examples see Figure 1 to Figure 5 As shown, a U-shaped tooling device for tensioning construction of a prestressed steel structure includes a tensioning screw 5, a load-bearing frame connected to a steel cable 10, and a tensioning jack 8. The anchor head of the steel cable 10 is made of The fork lug anchor head 12 connected by the pin shaft 7 and the lug plate 13, the middle round steel of the steel cable 10 has a step change in section, and the bearing frame includes two U-shaped bearing pull rings 1 and two conversion boxes 3 and a cable cervical bearing seat 6, the arc-shaped parts of the two U-shaped load-bearing pull rings 1 are pressed tightly on the two fork-shaped auricles of the fork ear anchor head 12, and each U-shaped load-bearing pull The two free ends of the ring 1 pass through a conversion box 3 respectively, and are fixed by the lock nut 4. Each conversion box 3 has a through hole between the two free ends passing through the U-shaped load-bearing pull ...

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Abstract

The invention relates to a U-shaped tool device for prestressed steel structure tensioning construction and a construction method. The U-shaped tool device for prestressed steel structure tensioning construction is provided with a forked lug anchor head for bearing counterforce, and is provided with an inhaul cable cervical vertebra bearing base serving as a rear bearing point of a tensioning stress unit, and a tension rod conversion device. A U-shaped bearing pull ring is connected to the forked lug anchor head of a steel inhaul cable; and the section of the lug plate is not weakened, and the manufacturing technology can be simplified. A pressure sensor is arranged inside an oil pump, and the aim that the tension of two 2,500 kN lifting jacks and the oil pump system can reach 4,400 kN can be fulfilled. Meanwhile, the U-shaped tool device for the prestressed steel structure tensioning construction has the advantages of small volume, light total weight, simple manufacturing technology, simple and convenient implementing operation, high tension control precision, and the like, and is particularly applied to constructing super-tonnage tensioning members by adopting huge forked lug anchor head inhaul cable.

Description

technical field [0001] The invention relates to a prestressed steel structure tensioning device and a construction method, in particular to a U-shaped tooling device and a construction method for the prestressed steel structure tensioning construction of a large fork lug anchor head cable. Background technique [0002] In modern large-scale building steel structures, the traditional outer-rotating cold-cast anchor head steel cables have been gradually replaced by inner-rotating hot-cast lug anchor head cables. The biggest problem in the tensioning construction of the prestressed steel structure is the selection and design of the "rooting" process of the reaction force point at the upper end of the bearing frame. The "rooting" process of the fork ear anchor head cable usually includes "hoop type", "shoulder pole type", "steel structure lug plate drilling type" and other process methods. However, the hoop type, the shoulder pole type, and the steel structure lug plate drilli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/12
Inventor 王泽强李国立宋松霞吕学政钱英欣张然徐瑞龙陈新礼袁英战沈斌傅琰汤世钧
Owner BEIJING ACAD OF BUILDING ENG
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