CN207749851U - The construction package of CFRP plate multi-point support prestressed reinforcements - Google Patents

Abstract

The utility model discloses a kind of construction packages of CFRP plates multi-point support prestressed reinforcement.The implementation of the construction package, post-stretching is first anchored, jack is not used, and uses the design of the support device that can artificially control bearing length and multi-point support (support points are n), the tensioning length for controlling CFRP plates, to realize the application of CFRP board prestress.To there is the external structural steelwork that should reinforce demand in advance, this structure is easy to use, can be used for lower flange reinforcing, the reinforcing of pre-stressed struts steel column of girder steel etc..

Description

The construction package of CFRP plate multi-point support prestressed reinforcements

Technical field

The utility model belongs to structure of steel product technical field, and in particular to a kind of CFRP plates multi-point support prestressed reinforcement Construction package.

Background technology

The validity of prestressed reinforcement steel construction is proven in many engineerings.Apply prestressing force in steel construction, The bearing capacity of component or structure can be improved, Reducing distortion achievees the purpose that saving steel, reduces project cost.In reality Engineer application in, can also apply over the entire structure by prestress application on a certain or certain components.

For girder steel, CFRP board prestress reinforcings are carried out to lower flange, precompressed can be applied by pair cross-section tensile region Stress can make structure not generate crack or fracture width reduction under working load, and prestressing force can also make beam generate antiarch Act on and reduce the deformation of beam.Also, it is prestressed to use the utilization rate for improving CFRP, this is because the intensity height of CFRP, Elasticity modulus is small, needs the high-strength effect of prodigious deformation competence exertion fiber, applies pretension to CFRP, CFRP can be made to exist Structure gives full play to its intensity before destroying.Meanwhile prestressed use also avoids stripping damage.Therefore Prestressed CFRP is used to reinforce When, the vertical relative deformation of beam is reduced, stripping shear stress is reduced, cohesive stripping damage is avoided, c correspondingly increases pole Limit bearing capacity.

For steel column, pre-stressed struts column is relatively conventional.By giving both ends to anchor therewith in the axial compression member of compression Rope apply Prestressing and be pressurized in advance, and under load action, rod piece continues to be pressurized, the two Stress superposition, and prestressed cable is but answered Power reduces, while several supports being arranged in component, as long as component, under outer load action, prestressed high-strength cable wire remains It tightens and unflagging state, effective elastic bearing point can be provided to component by support, length is calculated to reduce component Degree, improves the stability bearing capacity of component.

It is many to apply prestressed method, there is antiarch method, direct stretching method, ripple anchorage stretching method etc..But these sides Method uses jack to carry out tensioning mostly, and complex process is not strong in practical engineering.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model purport It is proposing a kind of construction package of CFRP plates multi-point support prestressed reinforcement, structural member application is being answered in advance using simple structure Power.

According to a kind of construction package of CFRP plates multi-point support prestressed reinforcement of the utility model embodiment, the structure Component includes：Structural member, the structural member are suitable for load bearing hardware；CFRP plates, the CFRP plates are located at institute It states on structural member, there are at least two tie points being connected on the structural member on the CFRP plates；Support device, the branch Support arrangement is located on the structural member and between two tie points, the support device includes adjustment screw and support Part, the adjustment screw are rotatably arranged on the structural member, the support element and the adjustment screw screw-thread fit, described The support element and the distance between the structural member are adjustable when adjustment screw rotation, and the supports support is in the CFRP plates On, the support element between the structural member at a distance from can jack up the CFRP plates and be directed away from the structural member when increasing Direction distortion.

According to the construction package of the CFRP plate multi-point support prestressed reinforcements of the utility model embodiment, by by CFRP plates After being connected on structural member, CFRP plates are jacked up using support device, do not use the complicated technology of jack tension, and support dress The tensioning amount that CFRP plates are adjusted by adjusting the rotation of screw rod is set, to realize the application of CFRP board prestress.It is external pre- to having The engineering of demand should be reinforced, this construction package is simple in structure, and use is easy to operate, and construction cost is low, highly practical.

In some embodiments, the support device includes fixed plate, and the fixed plate is fixed on the structural member, institute It states fixed plate and is equipped with groove, the opening of the groove is necking；Meanwhile the adjustment screw has head protrusion and tail portion convex It rises, the head protrusion is for limiting the support element, and the tail protrusion cooperation is in the groove.

Specifically, the support device has multiple adjustment screws, the support element and multiple adjustment screws It is threadedly coupled respectively.

Further, the surface of the support element contacted with the CFRP plates is formed towards far from the structural member The cambered surface of direction protrusion.

In some embodiments, the support device is multiple, and multiple support device intervals are opened in the structure On part and it is used to support CFRP plates described in same.

In some embodiments, being located on the CFRP plates on the part between support device described in each adjacent two has The tie point being connected on the structural member.

In some embodiments, the construction package further includes anchor, and the anchor includes pressing plate and anchoring The CFRP plates are compressed on the structural member by part, the pressing plate, and the anchoring piece is connected to the structural member and the pressure Between plate, the CFRP plates constitute the tie point by the part that the pressing plate is suppressed and is connected with the structural member.

Specifically, the surface of the pressing plate contacted with the CFRP plates is formed towards the direction protrusion of the structural member Cambered surface.

More specifically, the anchor includes the anchor plate being welded to connect on the structural member, the anchoring piece is The bolt being threaded on the anchor plate.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description In become apparent, or recognized by the practice of the utility model.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment Become apparent and is readily appreciated that, wherein：

Fig. 1 a are according to the side view of the construction package of the utility model one embodiment, and wherein CFRP plates are single-point branch Support；

Fig. 1 b are according to the side view of the construction package of the utility model one embodiment, and wherein CFRP plates are two point branch Support；

Fig. 1 c are according to the side view of the construction package of the utility model one embodiment, and wherein CFRP plates are three point branch Support.

Fig. 2 is the displaying step construction drawing according to the construction package of the utility model one embodiment, wherein

Step 1：By under closed state support device and interposition anchor be welded in knot on one side close to structural member On component；

Step 2：The CFRP plates of non-tensioning are passed through into support device and interposition anchor, it is solid using end anchorage device CFRP plates are determined in the both ends of structural member, then fix one end of the close CFRP plates of interposition anchor；

Step 3：Bolt on rotating supporting device so that CFRP plates, which are propped up, to be come, to generate pre-tensile stress.

Fig. 3 a are stereoscopic schematic diagrams when CFRP plates are not arranged according to the construction package of the utility model one embodiment；

Fig. 3 b be Fig. 3 a illustrated embodiments construction package be provided with CFRP plates when stereoscopic schematic diagram.

Fig. 4 a are the stereogram in closed state according to the support device of the utility model one embodiment；

Fig. 4 b are stereogram of the support device of Fig. 4 a illustrated embodiments in open configuration.

Fig. 5 a are the front view in closed state according to the support device of the utility model one embodiment；

Fig. 5 b are front view of the support device of Fig. 5 a illustrated embodiments in open configuration.

Reference numeral：

Construction package 100,

Structural member 1,

CFRP plates 2,

Support device 3, adjustment screw 31, support element 32, fixed plate 33, groove 331,

Anchor 4, pressing plate 41, anchoring piece 42, anchor plate 43, end anchorage device 401, interposition anchor 402.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

The structure of CFRP plate multi-point support prestressed reinforcements according to the utility model embodiment is described with reference to the accompanying drawings The structure of component.

According to a kind of construction package of CFRP plates multi-point support prestressed reinforcement of the utility model embodiment, such as Fig. 3 a and Shown in Fig. 3 b, construction package 100 includes：Structural member 1, CFRP plates 2 and support device 3.

Structural member 1 is suitable for bearing load, and here, structural member 1 is a certain component applied in engineering or certain components, also may be used To be total.Structural member 1 can be by camber beam, compression column, support column etc., born on structural member 1 load can be pulling force, Pressure, moment of flexure, torque etc..Optionally, structural member 1 is the components such as i shaped steel, channel steel, angle steel, certainly, the material of structural member 1 It can be also not limited to the above with shape.

CFRP plates 2 are located on structural member 1, have at least two tie points being connected on structural member 1 on CFRP plates 2.Branch Support arrangement 3 is located on structural member 1 and between two tie point, and support device 3 includes adjustment screw 31 and support element 32, is adjusted Whole screw rod 31 is rotatably arranged on structural member 1, support element 32 and 31 screw-thread fit of adjustment screw, branch when adjustment screw 31 rotates The distance between support member 32 and structural member 1 are adjustable, and support element 32 is supported on CFRP plates 2, and support element 32 is between structural member 1 Distance can jack up the Direction distortion that CFRP plates 2 are directed away from structural member 1 when increasing.

Wherein, CFRP plates 2 are mixed with resin matrix by carbon fiber, the non-gold being combined by certain processing technology Belong to material.CFRP plates 2 have that lightweight, high-strength, construction molding is convenient, the remarkable advantages such as corrosion-resistant, can tensioning, generate larger pre- Stress.

After CFRP plates 2 are fixed on structural member 1, by the adjustment screw 31 on rotating supporting device 3, it can adjust The distance between support element 32 and structural member 1.And since support element 32 is withstood on CFRP plates 2, in the opposite knot of support element 32 Component 1 is adjustable apart from the distance between the part that when transferring, CFRP plates 2 are jacked up and structural member 1 a, 2 amplitude of deformation of CFRP plates hair Changing, to which 2 tensioning amount of CFRP plates changes.

It is understood that when CFRP plates 2 are supported device 3 and jack up after deformation, CFRP plates 2 are equivalent to structural member 1 It is applied with prestressing force.Therefore, support device 3 can direct adjustment structure part 1 prestressing force size.On the construction package 100 The tensioning of CFRP plates 2, belongs to and first anchors post-stretching, avoids the complicated technology that tensioning is carried out using jack, directly adjustment branch Support element 32 in support arrangement 3 engagement height in adjustment screw 31, CFRP plates 2 are supported, tensioned state is at, Adjustment screw 31 is pulled by (or using tools such as spanners) manually, and prestressing force is applied to CFRP plates 2.In some embodiments, knot Prestressing force size can be measured by detecting system and be adjusted on structure component 100, such as foil gauge is arranged on CFRP plates 2, according to The numerical value of foil gauge on CFRP plates 2, control CFRP plates 2 apply prestressed size.

According to the construction package of the CFRP plate multi-point support prestressed reinforcements of the utility model embodiment, by by CFRP plates After 2 are connected on structural member 1, CFRP plates 2 are jacked up using support device 3, and support device 3 is by adjusting the rotation of screw rod 31 The tensioning amount for adjusting CFRP plates 2, to realize the 2 prestressed application of CFRP plates.To there is the external engineering that should reinforce demand in advance, this Construction package 100 is simple in structure, and use is easy to operate, and construction cost is low, highly practical, can be used for girder steel lower flange reinforce, Pre-stressed struts steel column reinforcing etc..

In some embodiments, as shown in Fig. 1 a- Fig. 5 b, support device 3 includes fixed plate 33, and fixed plate 33 is fixed on knot On component 1, fixed plate 33 is equipped with groove 331, and the opening of groove 331 is necking.Meanwhile adjustment screw 31 has head protrusion And tail protrusion, head protrusion are used for limited support part 32, tail protrusion coordinates in groove 331.Here, in fixed plate 33 Groove 331 be arranged to necking, when adjustment screw 31 can be made to rotate will not opposing fixed plate 33 move, and avoid adjusting The abjection out of groove 331 of the tail protrusion of whole screw rod 31.

Optionally, the head protrusion of adjustment screw 31 is hexagon, its effect, which is not only in that, avoids support element 32 from tune Deviate from whole screw rod 31, rotation adjustment screw 31 can be facilitated by also residing in.

Specifically, fixed plate 33 is steel plate, and fixed plate 33 is welded to connect on structural member 1.Certainly, fixed plate 33 can also It is fixed on structural member 1 (as riveted) using other structures form.Specifically, support element 32 is steel plate, and steel plate is equipped with and tune The threaded hole that whole screw rod 31 coordinates.

Further, as shown in Fig. 4 a- Fig. 5 b, support device 3 has multiple adjustment screws 31, support element 32 and multiple tune Whole screw rod 31 is threadedly coupled respectively, and after being connect in this way with multiple adjustment screws 31, support element 32 supports CFRP plates 2 more firm.

In some embodiments, the surface of support element 32 contacted with CFRP plates 2 is formed towards the direction far from structural member 1 The cambered surface of protrusion to avoid CFRP plates 2 from generating excessive stress concentration with 32 contact position of support element, and then avoids CFRP plates 2 are damaged, fracture.In some embodiments, both ends of the support element 32 on the length direction of CFRP plates 2 are equipped with rounded corner, in this way When support element 32 jacks up CFRP plates 2,32 edge of support element supports CFRP plates 2 by the cambered surface of rounded corner.

In the description of the present invention, it should be understood that the orientation or position of the instructions such as term " length ", " thickness " Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not It can be construed as a limitation of the present invention.

In the example shown in Fig. 5 a- Fig. 5 b, structural member 1 is structural member, and support device 3, which includes two blocks of steel plates and one, to revolve The bolt turned, the tail protrusion of bolt are linked together with one of steel plate by groove 331, and the two only can be planar Relative motion, the steel plate are welded on structural member.The spiro rod section of bolt is connected through a screw thread with another block of steel plate, rotates bolt When, which and occurs movement axially along a screw due to the relative motion relation of bolt and steel plate, to prop up CFRP plates 2. Two blocks of steel plates of the support device 3 are in beginning in closed state, and after CFRP plates 2 install, two blocks of steel plates pass through spiral shell Bolt is rotated and is separated from each other, and is in open configuration.The support device 3, can be by rotating bolt, to adjust to CFRP plates on the outside 2 bearing length a so that CFRP plates 2 are lifted off structural member.

Certainly, in the present invention, support device 3 or other structures, for example, can be straight on structural member 1 Setting groove 331, perforation are connect, adjustment screw 31 is connected to groove 331, at perforation.

In some embodiments, as shown in Fig. 2-Fig. 3 b, construction package 100 further includes anchor 4, and anchor 4 wraps Pressing plate 41 and anchoring piece 42 are included, CFRP plates 2 are compressed on structural member 1 by pressing plate 41, and anchoring piece 42 is connected to structural member 1 and pressing plate Between 41, CFRP plates 2 constitute tie point by the part that pressing plate 41 is suppressed and is connected with structural member 1.That is, anchor 4 CFRP plates 2 are clamped with pressing plate 41 and anchor plate 43, the mode of this fixed CFRP plates 2, reliability is preferable, avoids on CFRP plates 2 There is the case where larger concentrated stress leads to damage.

Specifically, as shown in Fig. 2, anchor 4 includes being welded to connect the anchor plate 43 on structural member 1, anchoring piece 42 For the bolt being threaded on anchor plate 43.

Optionally, pressing plate 41 is steel plate, and pressing plate 41 is equipped with the threaded hole coordinated with bolt.Advantageously, each anchoring dress Setting 4, there are multiple anchoring pieces 42, i.e. pressing plate 41 to be fixed on anchor plate 43 by multiple bolts.

In the embodiment having, same CFRP plates 2 are only supported by a support device 3, at this point, the phase of CFRP plates 2 Both ends are fixed on by anchor 4 on structural member 1 respectively.

In the embodiment having, the number n of multi-point support according to specific requirements, can also be designed.Such as Fig. 1 b and Fig. 1 c institutes Show, support device 3 is multiple, and the interval of multiple support devices 3 is opened on structural member 1 and is used to support same CFRP plates 2.Such as When reinforcing the i shaped cross section steel column of weak axis unstability, points n can be supported by controlling, bearing length a be controlled, to realize Steel column sectional area outer after CFRP plates 2 are reinforced does not expand.

Specifically, have on the part on CFRP plates 2 between each adjacent two support device 3 and be connected to structural member 1 On tie point.Be connected on structural member 1 in this way, CFRP plates 2 just have every one section at one, be equivalent to CFRP plates 2 are divided into it is more Section, every section is supported by support device 3 respectively, and further expansion can be obtained in the tensioning amount of such CFRP plates 2.

Here for convenience of distinguishing, according to the position of anchor 4, will can be known as holding positioned at the anchor 4 of the ends CFRP Anchor 4 between the two neighboring support device 3 on CFRP plates 2 is known as interposition anchoring dress by portion's anchor 401 402 are set, as shown in Fig. 1 a- Fig. 2.

In the embodiment with multiple anchors 4, until less than on interposition anchor 402, pressing plate 41 with The surface that CFRP plates 2 contact is formed towards the cambered surface of the direction protrusion of structural member 1, and anchor plate 43 is contacted with CFRP plates 2 Surface is formed towards the cambered surface of the direction protrusion of structural member 1.To avoid CFRP plates 2 from being generated with 4 contact position of anchor Excessive stress concentration, and then CFRP plates 2 is avoided to be damaged, fracture.

It is described according to the utility model embodiment CFRP plate reinforced member multi-point support prestress applications referring to Fig. 2 Method.

According to the CFRP plate reinforced member multi-point support method for applying prestressing force of the utility model embodiment, including it is as follows Step：

Step 1：The fixed plate 33 of support device 3 is welded to connect on structural member 1, wherein support device 3 further includes adjusting Whole screw rod 31 and support element 32, adjustment screw 31 are rotatably arranged in fixed plate 33, support element 32 and 31 screw thread of adjustment screw Cooperation, support device 3 are maintained at the closed state that support element 32 is bonded fixed plate 33；By the anchor plate 43 of multiple anchors 4 It is welded to connect at interval on structural member 1；

Step 2：The CFRP plates 2 of non-tensioning are placed on support element 32 and multiple anchor plates 43, by each anchor 4 Pressing plate 41 is connected to by anchoring piece 42 on anchor plate 43, and pressing plate 41 and anchor plate 43 is made to clamp CFRP plates 2；

Step 3：Adjustment screw 31 on rotating supporting device 3 so that CFRP plates 2 are propped up come to generate pre-tensile stress.

Here, the cross sectional shape of structural member 1, material type can not be restricted, support device 3, anchor structure specific knot Structure above with respect in the explanation of the construction package 100 of CFRP plate multi-point support prestressed reinforcements it is stated that, which is not described herein again.

As a result, according to the CFRP plate reinforced member multi-point support method for applying prestressing force of the utility model embodiment, first Post-stretching is anchored, jack is not used, and uses the support device 3 and multi-point support (supporting point that can artificially control bearing length Number is design n), the tensioning length of control CFRP plates 2, to realize the 2 prestressed application of CFRP plates.It should add in advance in vitro to having Gu the structural steelwork of demand, the method is easy to use, can be used for the lower flange reinforcing of girder steel, pre-stressed struts steel column is reinforced Deng.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

In the description of this specification, the description of reference term " embodiment ", " example " etc. mean combine the embodiment or Example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the utility model. In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, description Particular features, structures, materials, or characteristics can be tied in an appropriate manner in any one or more of the embodiments or examples It closes.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that： Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (9)

1. a kind of construction package of CFRP plates multi-point support prestressed reinforcement, which is characterized in that the construction package includes：

Structural member, the structural member are suitable for load bearing hardware；

CFRP plates, the CFRP plates are located on the structural member, have at least two to be connected to the structure on the CFRP plates Tie point on part；

Support device, the support device are located on the structural member and between two tie points, the support dress Set including adjustment screw and support element, the adjustment screw is rotatably arranged on the structural member, the support element with it is described Adjustment screw screw-thread fit, when adjustment screw rotation support element and the distance between the structural member it is adjustable, it is described Supports support on the CFRP plates, the support element between the structural member at a distance from can jack up when increasing it is described CFRP plates are directed away from the Direction distortion of the structural member.

2. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 1, which is characterized in that the branch Support arrangement includes fixed plate, and the fixed plate is fixed on the structural member, and the fixed plate is equipped with groove, the groove Opening is necking；Meanwhile the adjustment screw has head protrusion and tail protrusion, the head protrusion is for limiting the branch Support member, the tail protrusion cooperation is in the groove.

3. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 1, which is characterized in that the branch There are support arrangement multiple adjustment screws, the support element to be threadedly coupled respectively with multiple adjustment screws.

4. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 1, which is characterized in that the branch The surface of support member contacted with the CFRP plates is formed towards the cambered surface that the direction far from the structural member is protruded.

5. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 1, which is characterized in that the branch Support arrangement is multiple, and multiple support device intervals are opened on the structural member and are used to support CFRP described in same Plate.

6. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 5, which is characterized in that described It is located at the company for having on the part between support device described in each adjacent two and being connected on the structural member on CFRP plates Contact.

7. the construction package of the CFRP plate multi-point support prestressed reinforcements according to any one of claim 1-6, feature It is, the construction package further includes anchor, and the anchor includes pressing plate and anchoring piece, and the pressing plate will be described CFRP plates are compressed on the structural member, and the anchoring piece is connected between the structural member and the pressing plate, the CFRP plates The tie point is constituted by the part that the pressing plate is suppressed and is connected with the structural member.

8. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 7, which is characterized in that the pressure The surface of plate contacted with the CFRP plates is formed towards the cambered surface of the direction protrusion of the structural member.

9. the construction package of CFRP plates multi-point support prestressed reinforcement according to claim 7, which is characterized in that the anchor It is fixedly mounted with and sets the anchor plate including being welded to connect on the structural member, the anchoring piece is to be threaded on the anchor plate Bolt.