CN2714680Y

CN2714680Y - Prestressed FRP plate anchoring device

Info

Publication number: CN2714680Y
Application number: CN 200420078393
Authority: CN
Inventors: 赵谦; 包兆鼎; 戴方毕; 竺伟; 杨中平
Original assignee: Sinoma Science and Technology Co Ltd
Current assignee: Sinoma Science and Technology Co Ltd
Priority date: 2004-08-05
Filing date: 2004-08-05
Publication date: 2005-08-03
Anticipated expiration: 2014-08-05

Abstract

The utility model discloses a pre-stressed FRP plate anchoring device, relating to the fastening device of the pre-stressed FRP board, and comprising a fixed end clamping device 1, a fixed end baffle plate 2, a stretching end clamping device 3, a stretching end baffle plate 4, etc. The fixed end clamping device 1 is positioned at the front of the fixed end baffle plate 2; the stretching end baffle plate 4 and the stretching end clamping device 3 are connected into integration via the guide bolts 5 of the left side and the right side of stretching end baffle plate 4; the fixed end clamping device 1 and the stretching end clamping device 3 are self anchorage devices inserted with wedge plates 6. A pre-stressed FRP plate anchorage device made by adopting the scheme of the utility model can make the FRP board fixed on the concrete keep a definite prestress for a long time; the lightweight and high-strength features of the FRP board can be fully played.

Description

Pre-stress FRP sheet material anchor device

Technical field

Pre-stress FRP sheet material anchor device relates to the fastener of prestressing force sheet material, relates in particular to the fastener of pre-stress FRP sheet material.

Background technology

Fibre reinforced plastics (Fiber Reinforced Plastics) are called for short FRP sheet material, as a kind of novel concrete structure reinforcement material, have lightweight, high-strength, construction back weightening finish is little, do not change the original structure shape, anti-seismic performance is good, and is corrosion-resistant, long service life, it is convenient to construct, and characteristics such as comprehensive price ratio height are fit to concrete structure reinforcement and transformations such as buildings in general, bridge, tunnel.

According to foreign data, at present, there are nearly 100,000 bridge block reinforcement corrosions serious in 600,000 bridge blocks of the U.S., the maintenance cost that is used for road bridge every year is just up to 50,000,000,000 dollars, just comprises that wherein a large amount of use FRP sheet materials reinforce concrete structure.

For a long time, when using FRP sheet material that concrete is reinforced, only simply FRP sheet material is sticked on the surface, concrete position that needs reinforcement, unique premium properties of high-strength, the stretch-proof of FRP sheet material can be given full play in this reinforcing mode end.For FRP sheet material, when reinforced concrete, apply certain prestressing force, can better bring into play its reinforcing, reinforcing property.

Summary of the invention

At the existing problem of FRP sheet material to existing in the concrete structure reinforcement, the utility model proposes a kind of pre-stress FRP sheet material anchor device, can realize having the purpose that prestressed FRP sheet material carries out anchoring.

Technical solution of the present utility model is: it comprises parts such as fixed end anchor clamps 1, fixed end baffle plate 2, stretch-draw end anchor clamps 3, stretch-draw end-stopping plate 4, before described fixed end anchor clamps 1 are positioned at fixed end baffle plate 2, the fixed guide screw rod 5 of stretch-draw end-stopping plate 4 by its left and right sides is connected as a single entity with stretch-draw end anchor clamps 3, fixed end anchor clamps 1 and stretch-draw end anchor clamps 3 be assign wedge type block 6 from anchor device.When being after FRP sheet material 7 imposes prestressing force with special-purpose stretching frame, since be positioned at the fixed end anchor clamps 1 at sheet material 7 two ends and stretch-draw end anchor clamps 3 be assign wedge type block 6 from anchor device, therefore, can make and have that prestressed FRP sheet material 7 is long-term after to concrete structure reinforcement to keep this tension force.Assign into the wedge type block 6 in fixed end anchor clamps 1 and the stretch-draw end anchor clamps 3, the surperficial crude injustice that it contacts with pre-stress FRP sheet material 7.Such structure is in order to increase the snap-in force between anchor device and sheet material.

The pre-stress FRP sheet material anchor device that adopts the utility model scheme to make can make the certain prestressing force of the long-term maintenance of the FRP sheet material of reinforcing on concrete, has given full play to the lightweight of FRP sheet material, high-strength characteristics.On the basis that does not change the original building structure, increased reinforcing, the reinforcing effect of reinforcement material.Especially meaning is bigger when using the senior materials such as carbon fiber of performance good strength.

Description of drawings

Fig. 1 is a pre-stress FRP sheet material anchor device structural representation;

Fig. 2 is fixed end clamp structure figure;

Fig. 3 carves the piece scheme of installation in the fixed end anchor clamps.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

FRP sheet material 7 is 5 centimeters wide carbon fiber boards among Fig. 1.The member material is steel in the anchor device.Fixed end anchor clamps 1 are of a size of 10cm * 7cm * 3cm, and as shown in Figure 2, its inside has the wide rectangular opening of 5cm, and FRP sheet material 7 is passed.It is close to fixed end baffle plate 2 one stomidium height is 1.1cm, and the height of the other end is 1.6cm, facilitates like this and assigns wedge type block 6, an end of FRP plate 7 can be fixed.

Wedge type block 6 is of a size of 10cm * 5cm, and its thickness one end is 0.9cm, and the other end is 0.6cm.Wedge type block 6 is pasted with emery paper (80-240 order) with the contacted one side of FRP sheet material and forms crude surface, is more conducive to strengthen the frictional force between pre-stress FRP plate and the wedge type block like this.

Fixed end baffle plate 2 is of a size of 11cm * 4cm * 3cm, and the internal holes width is 5cm, highly is 1.1cm, and FRP plate 7 passes this hole.About fixed end baffle plate 2, have two chemical anchors keyholes, be used for fixing baffle plate.

Stretch-draw end anchor clamps 3 are of a size of 11cm * 10cm * 3cm, and its internal construction is identical with fixed end anchor clamps 1, and the other end of FRP plate just is placed in one.The guide spiro rod 5 that it is 1.2cm that its bilateral symmetry is fixed with two diameters.Stretch-draw end-stopping plate 4 is of a size of 16cm * 4cm * 3cm.Stretch-draw end-stopping plate 4 can move freely along fixed guide screw rod 5, after special-purpose stretching frame has applied prestressing force to FRP plate 7, can stretch-draw end anchor clamps 3 be located by the nut of stretch-draw end-stopping plate 4 both sides, with long-term maintenance prestressing force.

When the wide FRP plate of 10cm was applied prestressing force, the aperture widths on the members such as fixed end anchor clamps 1, fixed end baffle plate 2, stretch-draw end anchor clamps 3 was 10cm, and corresponding size is also suitably amplified.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent deformation formation, all drop in the protection domain of the utility model requirement.

Claims

1, pre-stress FRP sheet material anchor device, it is characterized in that: it comprises fixed end anchor clamps (1), fixed end baffle plate (2), stretch-draw end anchor clamps (3), stretch-draw end-stopping plate parts such as (4), it is preceding that described fixed end anchor clamps (1) are positioned at fixed end baffle plate (2), the fixed guide screw rod (5) of stretch-draw end-stopping plate (4) by its left and right sides is connected as a single entity with stretch-draw end anchor clamps (3), fixed end anchor clamps (1) and stretch-draw end anchor clamps (3) be assign wedge type block (6) from anchor device.

2, pre-stress FRP sheet material anchor device according to claim 1 is characterized in that: assign into the wedge type block (6) in fixed end anchor clamps (1) and the stretch-draw end anchor clamps (3), the surperficial crude injustice that it contacts with pre-stress FRP sheet material.