Carbon fiber tendon anchor prestress tension integrated system and prestressing and tensioning methods

Abstract

The present invention discloses a carbon fiber tendon anchor pre-tensioning and tensioning integrated system, belonging to the technical field of prestressed carbon fiber tendons. The system includes two parallel bases; a prestressed anchor disposed between the two parallel bases for connecting multiple CFRP tendons in parallel; a first steel block; two parallel screws; a jack disposed between the prestressed anchor and the first steel block; and a second steel block inserted between the two parallel screws and having a first position and a second position; when the second steel block is in the first position, the jack applies a pre-tightening force to the CFRP tendons through the second steel block; when the second steel block is in the second position, the jack applies a tensile force to the CFRP tendons sequentially through the first steel block and the screws. The present invention can achieve simultaneous pre-tightening and tensioning of multiple CFRP tendons, increase the tensioning tonnage, and improve the construction efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of prestressed carbon fiber tendons, and more specifically, relates to a carbon fiber tendon anchor pre-tensioning and tensioning integrated system and pre-tensioning and tensioning methods. Background Art

[0002] With the rapid development of prestressed strengthening technology, prestressed carbon fiber tendons (CFRP) have gradually begun to be used as external prestressed strengthening materials in engineering practice, especially in the lifting and traction of some large components. Since the reinforcement effect of a single CFRP tendon sometimes cannot reach the desired level or the failure probability is high due to the quality of the tendon material and the anchoring efficiency, when using CFRP tendons, it is necessary to pre-tighten the prestressed tendon or the load-bearing tendon first, so that the forces on each prestressed tendon or load-bearing tendon are basically the same, and then the overall tensioning, lifting, and traction are carried out.

[0003] The conventional pre-tightening of CFRP tendons is to pre-tighten each CFRP tendon one by one. The common method is as follows: First, install the continuous lifting jack and its pumping station and the through-hole jack and its pumping station in place on the lifting platform. Thread the continuous lifting jack with multiple steel strands for lifting and connect and anchor them to the component to be lifted one by one. Then, at the upper end of the continuous lifting jack, sleeve the through-hole jack from the end of the first steel strand to the pressure plate of the front jack connected to the lifting jack, clamp the steel strand and tension it to the set value, and then fix it by clamping with the clamping pieces on the front jack anchor plate and the rear top anchor plate of the continuous lifting jack. Then, release the tension of the through-hole jack, loosen the clamping, and completely withdraw the through-hole jack from the end of the first steel strand to complete the pre-tightening of this CFRP tendon.

[0004] The disadvantages of the above pre-tightening method are as follows: A large number of devices are used, and it is necessary to additionally add devices such as through-hole jacks and their supporting pumping stations. The operation procedure is complex. For each pre-tightening of a CFRP tendon, the CFRP tendon needs to be threaded into the through-hole jack from the end at the upper end of the continuous lifting jack, and after tensioning and pre-tightening the CFRP tendon, the CFRP tendon has to be completely withdrawn from the through-hole jack. This kind of work generally requires a large number of operators. Especially when the continuous lifting jack is often installed on a high-altitude platform dozens of meters or even hundreds of meters above the ground, it is necessary to operate on a temporary and narrow platform at the top of the continuous lifting jack, which is difficult to operate and very unsafe.

[0005] In view of the above problems, a Chinese invention patent with the application number CN200410002193.0 and the publication date of July 20, 2005 discloses a method for pre-tightening the lifting steel strands in a continuous lifting jack. The solution includes: after completing the preliminary steps, loosening the clamping pieces on the pressure plate and the anchor plate of the front jack in the continuous lifting jack; using a pair of clamping pieces to successively clamp each steel strand on the continuous lifting jack on the anchor plate in front of the front jack of the continuous lifting jack, implementing successive pre-tightening, and finally reinstalling the loosened clamping pieces on the pressure plate and the anchor plate onto the anchor plate of the front jack in the continuous lifting jack to anchor each steel strand. This application is used to pre-tighten the lifting steel strands in the continuous lifting jack before the lifting member. Compared with the existing methods, it solves the problems of low efficiency, excessive process equipment, inconvenient operation, and high operation risk of the existing pre-tightening methods;

[0006] A Chinese invention patent with the application number CN201510621491.6 and the publication date of December 16, 2015 discloses a lifting jack with a lifting pre-tightening device. The solution includes: an upper clamping top, a main top, a lower clamping top, and a lifting pre-tightening device connected in sequence. The lifting pre-tightening device is composed of an upper lifting clamping piece, a pressure plate, and a pre-tightening block. The pre-tightening block is a short cylinder with a convex platform at the bottom, and there are n tapered holes on the short cylinder for installing the upper lifting clamping pieces; the pressure plate is circular, with m through holes on its ring, and there is an inner step inside the ring; in the working state, the pre-tightening block is fixedly installed on the upper clamping top of the main top, and the upper lifting clamping piece is placed in the tapered hole of the pre-tightening block corresponding to the steel strand to be adjusted; the pressure plate is located outside the pre-tightening block, and its inner step is stuck on the convex platform of the pre-tightening block. Bolts and washers pass through the through holes on the outer surface of the pressure plate to connect the pressure plate, the pre-tightening block, and the upper clamping top. This solution can uniformly pre-tighten the problem steel strands in time during the lifting process.

[0007] However, the above existing technologies all have the following disadvantages: (1) Each pre-tightening of the CFRP bars can only pre-tighten a single CFRP bar in sequence, with cumbersome operations; (2) The CFRP bar pre-tightening device has a complex structure and cannot continuously pre-tighten and tension the CFRP bars, resulting in a large number of tensioning supporting equipment, a small operation space during pre-tightening and tensioning, and extremely inconvenient operation. Summary of the Invention

[0008] 1. Problems to be Solved

[0009] Aiming at the problems existing in the prior art that it is impossible to pre-tighten multiple CFRP bars simultaneously, and the pre-tightening device and tensioning device of CFRP bars are complex in structure, resulting in a large number of supporting devices, small operating space during pre-tightening and tensioning, and extremely inconvenient operation, the present invention provides a carbon fiber bar anchor pre-tensioning and tensioning integrated system and pre-tightening and tensioning methods. By integrating the pre-tightening and tensioning structures of CFRP bars into one body and connecting multiple CFRP bars in parallel, it is possible to pre-tighten and tension multiple CFRP bars simultaneously, increase the tensioning tonnage, and improve the construction efficiency.

[0010] 2. Technical Solution

[0011] To solve the above problems, the present invention adopts the following technical solutions.

[0012] The carbon fiber bar anchor pre-tensioning and tensioning integrated system includes:

[0013] Two mutually parallel bases;

[0014] A prestressed anchor, disposed between two mutually parallel bases, connecting multiple CFRP bars in parallel; the prestressed anchor has a plurality of anchoring holes, and the plurality of anchoring holes are equidistantly spaced from each other on the central axis section of the prestressed anchor for multiple CFRP bars to be individually and spacedly inserted;

[0015] The first steel block;

[0016] Two mutually parallel screw rods for connecting the prestressed anchor and the first steel block;

[0017] A jack, disposed between the prestressed anchor and the first steel block;

[0018] And a second steel block, inserted between two mutually parallel screw rods and having a first position and a second position;

[0019] When the second steel block is in the first position, the jack applies a pre-tightening force to the CFRP bars through the second steel block;

[0020] When the second steel block is in the second position, the jack applies a tensile force to the CFRP bars sequentially through the first steel block and the screw rods.

[0021] Preferably, at least one end of the CFRP bar penetrates out of the anchoring hole, and the ends of different CFRP bars penetrating out of the anchoring hole are flush with each other.

[0022] Preferably, the first position refers to the position between the prestressed anchor and the jack;

[0023] When the second steel block is in the first position, both ends of the second steel block are respectively inserted into two mutually parallel screw rods.

[0024] The second position refers to the position between the base and the jack.

[0025] When the second steel block is located at the second position, both ends of the second steel block respectively abut against two parallel bases.

[0026] Preferably, the prestressed anchor further includes:

[0027] Wedge grips, which are inserted into the anchoring holes and used to clamp the CFRP bars after they penetrate into the anchoring holes. The outer diameter of the wedge grips decreases along the axial direction of the anchoring holes to form a certain taper, so that the wedge grips at least include a continuous taper section and a parallel section in the length direction. The taper of the taper section is greater than that of the parallel section, and the taper of the parallel section is 0. The parallel section is located outside the anchoring holes.

[0028] When the second steel block is located at the first position, the jack simultaneously applies a pre-tightening force to the CFRP bars and the wedge grips through the second steel block.

[0029] Preferably, it further includes: a plurality of limiting devices, which are arranged on the screw rod.

[0030] As the second aspect of the present application, a method for simultaneously pre-tightening multiple CFRP bars is provided, which is used for the carbon fiber bar anchor pre-tensioning and tensioning integrated system as described in any one of the above items. The method includes:

[0031] Complete the connection between the screw rod and the prestressed anchor, and the connection between the screw rod and the first steel block; wherein, a plurality of CFRP bars are connected in parallel on the prestressed anchor.

[0032] Install the jack between the prestressed anchor and the first steel block, and make the output end of the jack face the prestressed anchor.

[0033] Install the second steel block at the first position.

[0034] Apply a force to the second steel block through the jack until a predetermined pre-tightening tonnage is reached, and complete the simultaneous pre-tightening of multiple CFRP bars.

[0035] As the third aspect of the present application, a method for simultaneously tensioning multiple CFRP bars is provided, which is used for the carbon fiber bar anchor pre-tensioning and tensioning integrated system as described in any one of the above items. The method includes:

[0036] Complete the connection between the screw rod and the prestressed anchor, and the connection between the screw rod and the first steel block; wherein, a plurality of CFRP bars are connected in parallel on the prestressed anchor.

[0037] Install the jack between the prestressed anchor and the first steel block;

[0038] Install the second steel block at the second position;

[0039] Apply a force to the first steel block or the second steel block through the jack until the simultaneous tensioning of multiple CFRP bars is completed.

[0040] As the fourth aspect of the present application, a method for simultaneously pre-tightening and tensioning multiple CFRP bars is provided, which is used for the integrated pre-tensioning and tensioning system of carbon fiber bar anchors according to any one of claims 1 to 5. The method includes:

[0041] Complete the connection between the screw and the prestressed anchor, and the connection between the screw and the first steel block; wherein, multiple CFRP bars are connected in parallel on the prestressed anchor;

[0042] Install the jack between the prestressed anchor and the first steel block, and make the output end of the jack face the prestressed anchor;

[0043] Install the second steel block at the first position;

[0044] Apply a force to the second steel block through the jack until the predetermined pre-tightening tonnage is reached, and complete the simultaneous pre-tightening of multiple CFRP bars;

[0045] Remove the jack, the first steel block, and the second steel block;

[0046] Adjust the second steel block, install the second steel block at the second position, and reinstall the jack and the first steel block;

[0047] Apply a force to the first steel block or the second steel block through the jack until the simultaneous tensioning of multiple CFRP bars is completed.

[0048] 3. Beneficial effects

[0049] Compared with the prior art, the beneficial effects of the present invention are:

[0050] (1) For the integrated pre-tensioning and tensioning system and pre-tightening and tensioning method of carbon fiber bar anchors of the present invention, by designing the structure of the prestressed anchor, the tensioning tonnage can be increased, the construction efficiency can be improved, and conditions are provided for the simultaneous pre-tightening and tensioning of multiple CFRP bars;

[0051] (2) An integrated pre-tensioning and tensioning system for carbon fiber reinforced plastic (CFRP) tendon anchors of the present invention integrates the pre-tensioning and tensioning structures of CFRP tendons. Compared with conventional tensioning structures, it does not add other structures additionally, has fewer supporting devices, has a large operating space during pre-tensioning and tensioning, and can also achieve continuous pre-tensioning and tensioning of CFRP tendons. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic structural diagram of an integrated pre-tensioning and tensioning system for CFRP tendon anchors in one specific embodiment of the present application;

[0053] Figure 2 It is a schematic structural diagram of a base in one specific embodiment of the present application;

[0054] Figure 3 It is a schematic structural diagram of a prestressing anchor in one specific embodiment of the present application;

[0055] Figure 4 It is a side view of a prestressing anchor in one specific embodiment of the present application;

[0056] Figure 5 It is a schematic structural diagram of an integrated pre-tensioning and tensioning system for CFRP tendon anchors during pre-tensioning in one specific embodiment of the present application;

[0057] Figure 6 It is a schematic structural diagram of an integrated pre-tensioning and tensioning system for CFRP tendon anchors during tensioning in one specific embodiment of the present application;

[0058] In the figure: 100, base; 200, prestressing anchor; 210, anchoring hole; 220, wedge; 300, first steel block; 400, screw; 500, jack; 600, CFRP tendon; 700, second steel block. SPECIFIC EMBODIMENTS

[0059] The present invention will be further described below in conjunction with specific embodiments and the drawings.

[0060] The inventors of the present invention have recognized that since it is necessary to pre-tension the CFRP tendon before each tensioning of the CFRP tendon, if the pre-tensioning device has a complex structure, it will lead to more supporting devices for the tensioning structure, a small operating space during pre-tensioning and tensioning, and inconvenient operation; in addition, the existing pre-tensioning of CFRP tendons can only achieve sequential pre-tensioning of single CFRP tendons, and the operation is cumbersome. Therefore, the inventors of the present invention have proposed an integrated pre-tensioning and tensioning system for CFRP tendon anchors to achieve simultaneous pre-tensioning and tensioning of multiple CFRP tendons, increase the tensioning tonnage, and improve the construction efficiency.

[0061] Figure 1An exemplary carbon fiber tendon anchor prestressing and tensioning integrated system according to an embodiment of the present invention is shown, which is applied to the prestressing and tensioning of carbon fiber tendons. It includes: two parallel bases 100; a prestressing anchor 200, which is arranged between the two parallel bases 100 and connects multiple CFRP tendons 600 in parallel; a first steel block 300; two parallel screws 400 for connecting the prestressing anchor 200 and the first steel block 300; a jack 500, which is arranged between the prestressing anchor 200 and the first steel block 300; and a second steel block 700, which is inserted between the two parallel screws 400 and has a first position and a second position; when the second steel block 700 is in the first position, the jack 500 applies a prestressing force to the CFRP tendon 600 through the second steel block 700; when the second steel block 700 is in the second position, the jack 500 applies a tensile force to the CFRP tendon 600 in sequence through the first steel block 300 and the screw 400.

[0062] Referring to Figure 2 , the base 100 can specifically be set as a limit frame to play a role in support and positioning. According to specific applications, the base 100 can be attached to some members to be strengthened, such as concrete flexural members, through a matching bolt and nut structure. In a specific structural design, the limit frame includes at least two positioning plates, which are mainly used for the screw 400 to pass through and support and position the screw 400.

[0063] The prestressing anchor 200 mainly plays a role in connecting the CFRP tendons 600 in parallel. In an exemplary embodiment, the prestressing anchor 200 has multiple anchoring holes 210, such as 4 holes, 5 holes, 6 holes, 7 holes, 8 holes or 9 holes. The number of anchoring holes 210 is set to be applicable to different tensioning tonnages; the prestressing anchor 200 is used to separately and spacedly insert multiple CFRP tendons 600, and the multiple anchoring holes 210 are equidistantly spaced from each other on the central axis section of the prestressing anchor 200. In an exemplary embodiment, the anchoring holes 210 can be distributed on the prestressing anchor 200 in the following manner: one of the anchoring holes 210 is located at the center position of the multi-hole anchor ring 10, and the remaining anchoring holes 210 are arranged equidistantly around this anchoring hole 210; in another exemplary embodiment, the anchoring holes 210 can be distributed on the prestressing anchor 200 in the following manner: multiple anchoring holes 210 are equidistantly distributed up and down on the prestressing anchor 200 to form a "parallel connection". The above distribution methods of the anchoring holes 210 on the prestressing anchor 200 can avoid uneven stress between different CFRP tendons 600 during prestressing and tensioning.

[0064] At least one end of the CFRP bar 600 penetrates out of the anchoring hole 210 to facilitate pre-tightening; the ends of different CFRP bars 600 that penetrate out of the anchoring hole 210 are flush with each other to ensure uniform stress on each CFRP bar 600 during pre-tightening.

[0065] More specifically, referring to Figures 3 to 4 , the prestressed anchor 200 further includes: a wedge 220, which is inserted into the anchoring hole 210 and used to clamp the CFRP bar 600 after it penetrates into the anchoring hole 210. The outer diameter of the wedge 220 decreases along the axial direction of the anchoring hole 210 to form a certain taper, so that the wedge 220 includes at least a continuous taper section and a parallel section in the length direction. The taper of the taper section is greater than that of the parallel section. The taper of the taper section is preferably 1.2° - 1.5°, and the taper of the parallel section is 0 to reduce the notch effect and prevent the CFRP bar 600 from being cut due to stress concentration at the flush end where it extends out of the anchoring hole 210; the parallel section is located outside the anchoring hole 210. Here, the wedge 220 is not subject to the circumferential pressure of the prestressed anchor 200, but still plays a role in circumferential restraint on the wedge 220, realizing the transition of the CFRP bar 600 from not being subject to circumferential stress to being subject to circumferential stress.

[0066] The length of the parallel section is 5 mm. If it is too small, it cannot effectively reduce the notch effect. If it is too large, the degree of reduction of the notch effect is no longer obvious, and it wastes steel.

[0067] Chamfers are formed at the transition position between the taper section and the parallel section, and at the end face of the anchoring hole 210 to weaken the circumferential stress concentration.

[0068] The wedge 220 is used to directly act on the CFRP bar 600 and apply prestress on the CFRP bar 600. To ensure uniform stress on the CFRP bar 600, the wedge 220 can be a multi-piece structure. Such as a two-piece structure, a three-piece structure or a four-piece structure, etc. In a specific embodiment, the wedge 220 is a three-piece structure, which includes three thin sheets spaced from each other. When the CFRP bar 600 penetrates into the anchoring hole 210, the thin sheets are located in the gap between the anchoring hole 210 and the CFRP bar 600, so that an interference fit is formed between the CFRP bar 600 and the anchoring hole 210.

[0069] When assembling and implementing the prestressed anchor 200, the user can first pass each CFRP bar 600 through each anchoring hole 210 of the multi-hole anchor ring respectively, then assemble the wedge 220, and after applying the pre-tightening force, perform integral tensioning of multiple bars.

[0070] In an exemplary embodiment of the present invention, two mutually parallel screw rods 400 are mainly used to connect the prestressed anchor 200 and the first steel block 300. A plurality of limiting devices are provided on the screw rod 400. Specifically, the limiting device can be a nut or the like that is matched with the screw rod 400. In this specific embodiment, at least one limiting device is located on the side of the prestressed anchor 200 away from the jack 500 and is installed on the screw rod 400 to relatively fix the prestressed anchor 200 and the screw rod 400 by tightening the limiting device before pre-tightening the CFRP tendon 600, so as to complete the pre-tightening of the CFRP tendon 600 in the anchoring hole 210; at least one limiting device can abut against one of the positioning plates of the base 100 to realize the tightening and limiting of the nut after tensioning; in addition, at least one limiting device is provided on the side of the first steel block 300 away from the jack 500 to realize the fixing or disassembly between the first steel block 300 and the screw rod 400.

[0071] The jack 500 is arranged between the prestressed anchor 200 and the first steel block 300 and is mainly used to provide the force for pre-tightening and tensioning. The jack 500 can be selected as any one of an oil pressure jacking device, a hydraulic jacking device, an electric jacking device, a pneumatic jacking device, and a mechanical jacking device according to needs, and the present invention does not make any restrictions.

[0072] In an exemplary embodiment of the present invention, the first steel block 300 and the second steel block 700 mainly play a role in bearing force and supporting. For the second steel block 700, the second steel block 700 is inserted between two mutually parallel screw rods 400 and has a first position and a second position. The first position refers to the position between the prestressed anchor 200 and the jack 500; when the second steel block 700 is in the first position, both ends of the second steel block 700 are inserted into two mutually parallel screw rods 400 respectively. The second position refers to the position between the base 100 and the jack 500; when the second steel block 700 is in the second position, both ends of the second steel block 700 abut against two mutually parallel bases 100 respectively. It should be noted that in another exemplary embodiment, the second steel block 700 is specifically provided as two steel blocks, namely steel block one or steel block two; when the second steel block 700 is steel block one, the second steel block 700 is arranged in the first position, and when the second steel block 700 is steel block two, the second steel block 700 is arranged in the second position. When the second steel block 700 is arranged in the first position, it mainly plays a role in pre-tightening the CFRP tendon 600; when the second steel block 700 is arranged in the second position, it mainly plays a role in tensioning the CFRP tendon 600. For the convenience of explaining the process of pre-tightening and tensioning the CFRP tendon 600, the following will be described respectively with the second steel block 700 being steel block one or steel block two.

[0073] Reference Figure 5 , when the second steel block 700 is in the first position, the pre-tensioning integrated system of the carbon fiber tendon anchor is used to pre-tension the CFRP tendon 600, and its main steps include:

[0074] Complete the connection between the screw 400 and the prestressed anchor 200, and the connection between the screw 400 and the first steel block 300; wherein, multiple CFRP tendons 600 are connected in parallel on the prestressed anchor 200;

[0075] Install the jack 500 between the prestressed anchor 200 and the first steel block 300, and make the output end of the jack 500 face the prestressed anchor 200;

[0076] Install the second steel block 700 in the first position;

[0077] Apply a force to the second steel block 700 through the jack 500 until the predetermined pre-tensioning tonnage is reached, and complete the simultaneous pre-tensioning of multiple CFRP tendons 600.

[0078] Reference Figure 6 , when the second steel block 700 is in the second position, the pre-tensioning integrated system of the carbon fiber tendon anchor is used to tension the CFRP tendon 600, and its main steps include:

[0079] Complete the connection between the screw 400 and the prestressed anchor 200, and the connection between the screw 400 and the first steel block 300; wherein, multiple CFRP tendons 600 are connected in parallel on the prestressed anchor 200;

[0080] Install the jack 500 between the prestressed anchor 200 and the first steel block 300;

[0081] Install the second steel block 700 in the second position;

[0082] Apply a force to the first steel block 300 or the second steel block 700 through the jack 500 until the simultaneous tensioning of multiple CFRP tendons 600 is completed.

[0083] The advantages of the exemplary embodiment of the present invention are that by integrating the pre-tensioning and tensioning structures of the CFRP tendon 600 into one, it avoids the problems of many pre-tensioning and tensioning supporting devices, small operation space during pre-tensioning and tensioning, and extremely inconvenient operation; at the same time, multiple CFRP tendons 600 are connected in parallel, which can realize the simultaneous pre-tensioning of multiple CFRP tendons 600 and subsequent tensioning, increase the tensioning tonnage, and improve the construction efficiency.

[0084] As another aspect, the present invention also provides a method for simultaneously pre-tensioning and then tensioning multiple CFRP bars 600 using the above-mentioned carbon fiber bar anchor pre-tensioning and tensioning integrated system. The method includes:

[0085] Complete the connection between the screw 400 and the prestressed anchor 200, and the connection between the screw 400 and the first steel block 300; wherein, multiple CFRP bars 600 are connected in parallel on the prestressed anchor 200;

[0086] Install the jack 500 between the prestressed anchor 200 and the first steel block 300, and make the output end of the jack 500 face the prestressed anchor 200;

[0087] Install the second steel block 700 at the first position;

[0088] Apply a force to the second steel block 700 through the jack 500 until a predetermined pre-tensioning tonnage is reached to complete the simultaneous pre-tensioning of multiple CFRP bars 600;

[0089] Remove the jack 500, the first steel block 300, and the second steel block 700;

[0090] Adjust the second steel block 700, install the second steel block 700 at the second position, and reinstall the jack 500 and the first steel block 300;

[0091] Apply a force to the first steel block 300 or the second steel block 700 through the jack 500 until the simultaneous tensioning of multiple CFRP bars 600 is completed.

[0092] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the method for simultaneously pre-tensioning and then tensioning multiple CFRP bars 600 described above can refer to the corresponding process in the specific implementation manner of the above-mentioned carbon fiber bar anchor pre-tensioning and tensioning integrated system, and will not be elaborated here.

[0093] The embodiments described in the present invention are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design idea of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention.

Claims

1. Carbon fiber tendon anchor prestressing and tensioning integrated system, characterized in that: Comprising: Two parallel bases; A prestressed anchor, disposed between the two parallel bases, for connecting multiple CFRP bars in parallel; the prestressed anchor has a plurality of anchoring holes, and the plurality of anchoring holes are equidistantly spaced from each other in the central axis cross-section of the prestressed anchor for separately and spacedly inserting multiple CFRP bars; A first steel block; Two parallel screws for connecting the prestressed anchor and the first steel block; A jack, disposed between the prestressed anchor and the first steel block; And a second steel block, inserted between the two parallel screws and having a first position and a second position; When the second steel block is in the first position, the jack applies a pre-tightening force to the CFRP bars through the second steel block; When the second steel block is in the second position, the jack applies a tensile force to the CFRP bars sequentially through the first steel block and the screws.

2. The carbon fiber tendon anchor prestressing and tensioning integrated system according to claim 1, characterized in that: The first position refers to the position between the prestressed anchor and the jack; When the second steel block is in the first position, both ends of the second steel block are respectively inserted into the two parallel screws; The second position refers to: the position between the base and the jack; When the second steel block is in the second position, both ends of the second steel block respectively abut against the two parallel bases.

3. The carbon fiber tendon anchor pre-tensioning integrated system according to claim 1, characterized in that: Further comprising: Multiple groups of limiting devices, arranged on the screws.

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