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A pre-clamping device for clip-type anchors for frp

A pre-clamping and clip-type technology, which is applied in the erection/assembly of bridges, the processing of building materials, bridges, etc., can solve the problems that it is difficult to ensure that the pre-clamping force is accurate and the pre-clamping degree is in place, so as to improve the application advantages , strong versatility, and the effect of reducing local stress concentration

Active Publication Date: 2022-06-28
山西省交通科技研发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the fact that the installation of anchors in the process of prestressed construction is entirely based on experience, and pre-clamping is performed by manpower, which makes it difficult to ensure the quantification of pre-clamping force and the accuracy of pre-clamping degree.

Method used

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  • A pre-clamping device for clip-type anchors for frp
  • A pre-clamping device for clip-type anchors for frp
  • A pre-clamping device for clip-type anchors for frp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] like figure 1 and figure 2 As shown in the figure, a clip-type anchorage pre-clamping device applied to FRP plates, the entire pre-clamping device, except the FRP plate to be clamped, is mainly composed of a force-transmitting screw and a matching nut 2, a sliding force-transmitting block 3, and a gasket. It is composed of key components such as block 4, structural foundation or base 5a, jack 6 with digital stopwatch, and reaction force block 7.

[0048] The two force-transmitting screws 2 pass through the connecting through holes on the sliding force-transmitting block 3, the structural foundation or base 5a and the reaction force block 7 in parallel in turn, and the two ends are fastened with nuts. The anchor head 1c to be clamped is built into the sliding block. Between the force transmission block 3, the structural foundation or base 5a, a jack 6 with a digital computer is built in between the structural foundation or base 5a and the reaction force block 7, formin...

Embodiment 2

[0053] like image 3 and Figure 4 As shown in the figure, a clip-type anchorage pre-clamping device applied to FRP reinforcement, the entire pre-clamping device is mainly composed of a force-transmitting screw, a matching nut 2, and a sliding force-transmitting block 3 except the FRP reinforcement to be clamped. , cushion block 4, jack 6 with digital stopwatch and reaction force block 7 and other key components, eliminating the need for structural foundation or base part, mainly used in temporary or construction sites where pre-clamping accuracy is not high.

[0054] The two force-transmitting screws 2 pass through the connecting through holes on the sliding force-transmitting block 3 and the reaction force block 7 in parallel in sequence, and the two ends are fastened with nuts. The anchor head 1c to be clamped is built into the sliding force-transmitting block 3 and the cushion block 4, a jack 6 with a digital stopwatch is built in between the cushion block 4 and the react...

Embodiment 3

[0059] like Figure 5 and Image 6 As shown in the figure, a clip-type hinged anchorage pre-clamping device applied to FRP plates, the entire pre-clamping device except the FRP plate to be clamped, mainly consists of a force-transmitting screw, a matching nut 2, a sliding force-transmitting block 3. It is composed of key components such as the cushion block 4, the temporary cement base 5a, the jack 6 with the digital computer and the reaction block 7; the temporary cement base 5a is temporarily fastened on the flat cement base 8 by two long bolts ; The inner edge of the sliding force transmission block 3 is a concave arc surface, which forms a hinge structure with the outer convex arc surface of the inner edge of the hinge anchor head during the pre-clamping process.

[0060] The two force-transmitting screws 2 pass through the connecting through holes on the sliding force-transmitting block 3, the temporary cement base 5a and the reaction force block 7 in parallel in turn, a...

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Abstract

The invention discloses a pre-clamping device of a clip-type anchor for FRP, wherein a sliding force transmission block and a reaction force block are connected by a force transmission bolt, and an anchor head to be clamped and a jack are built in, and the tension of the jack is used to Evenly feed the clip and the material to be clamped into the wedge-shaped through hole of the anchor head, and carry out normal compression on the clip and the material to be clamped through the wedge-shaped through hole, which is realized by empirical formulas and a digital code meter configured on the jack The quantitative control of the tension finally realizes the quantitative and controllable pre-clamping of the anchor head as a whole. The anchor head pre-clamping device proposed by the present invention has a wide range of applications, is light in size, simple in manufacture, easy in installation, quantitatively controllable in prestress, reliable in performance, and strong in versatility. It can effectively reduce the occurrence of local stress concentration in the anchorage system and improve the Tighten the stability of the contact between the material and the anchoring system, give full play to the mechanical properties of the material, and ensure the clamping uniformity of various types of tendons, strands, plates and profiles.

Description

technical field [0001] The invention belongs to the technical field of tension and anchorage of building materials, and particularly relates to a pre-clamping device of a clip-type anchor for FRP. Background technique [0002] Prestressing technology is widely used in the construction, reinforcement and maintenance of bridges, houses and special projects. Prestressing prestressed materials by tensioning requires an anchoring system with excellent performance. Currently, there are two designs of clamping or anchoring for prestressed materials: mechanical clamping and clip clamping. [0003] The clip-type clamping mainly uses the clamping plate and the anchor bolt to compress and lock the prestressed material, and realize the clamping by mechanical force. This structure is generally accepted in construction projects because of its simple design and reliable performance. The common clip-type prestressed structure is composed of anchors at both ends, prestressed materials (FRP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12E04C5/08E01D21/00E01D22/00E04G21/12
CPCE04C5/125E04C5/08E01D21/00E01D22/00E04G21/121
Inventor 崔东霞杨禹李登华吕晓轩郭赢赢王超林浩
Owner 山西省交通科技研发有限公司
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