CN203191293U - Bonding performance test device for FRP (Fiber Reinforced Plastic) rib and concrete under complex stress state - Google Patents

Bonding performance test device for FRP (Fiber Reinforced Plastic) rib and concrete under complex stress state Download PDF

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Publication number
CN203191293U
CN203191293U CN 201320208735 CN201320208735U CN203191293U CN 203191293 U CN203191293 U CN 203191293U CN 201320208735 CN201320208735 CN 201320208735 CN 201320208735 U CN201320208735 U CN 201320208735U CN 203191293 U CN203191293 U CN 203191293U
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CN
China
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steel plate
vertical
steel
pole
horizontal
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CN 201320208735
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Chinese (zh)
Inventor
陈育志
宣卫红
陈晓洪
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金陵科技学院
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Abstract

The utility model discloses a bonding performance test device for an FRP (Fiber Reinforced Plastic) rib and concrete under a complex stress state. The bonding performance test device is characterized by comprising a vertical outer framework (1), a vertical inner framework (2) and a transverse framework (3), wherein a test piece (22) is firstly clamped in the transverse framework (3) and then clamped in the vertical inner framework (2); the vertical inner framework (2) is clamped in the vertical outer framework (1); the FRP rib (23) of the test piece (22) penetrates through a top plate of the vertical outer framework (1) and then is connected with a tensile testing machine; a bottom tension rod (7) at the lower end of the vertical outer framework (1) is connected with the tensile testing machine; the stress direction of the test piece (22) is opposite to that of the bottom tension rod (7). The device and the method disclosed by the utility model are simple and easy to implement, so that an ideal experimental device is provided for a pull-out test under the complex stress state.

Description

FRP muscle and concrete binding performance testing device under the complicated applied force state

Technical field

The utility model relates to a kind of building element forces testing technology, especially a kind of FRP muscle and concrete binding performance test technology are to carry out FRP muscle and concrete binding performance pull device under a kind of complicated applied force state that can simulate the actual loading situation specifically.

Background technology

Steel bar corrosion is structure forfeiture bearing capacity, influences the principal element of expected service life, also is a major issue that influences reinforced concrete structure durability.The FRP muscle is to be reinforcing material with continuous fiber (glass fibre, carbon fiber, aramid fiber, assorted fibre), is matrix material with synthetic resin, and mixes an amount of assistant, a kind of advanced composite material (ACM) that forms through pultrusion technology and necessary surface treatment.Compare with traditional reinforcing bar, it has advantages such as anticorrosive, antifatigue, intensity height, in light weight, non-electro permanent magnetic, the mechanical property that it is excellent and adapt to the modern project structure to stride greatly, towering, heavily loaded, demand that lightweight develops, just be applied to more and more widely be subjected to Structural Engineering circle extensive concern in science of bridge building, all kinds of covil construction, oceanographic engineering, the underground works.

The FRP compound substance with the coefficient process of xoncrete structure in, often be not since the FRP material broken destruction, but since FRP-concrete interface undercapacity cause the xoncrete structure interface to be stripped from destruction.

FRP muscle and concrete adhesive property are mechanical behaviors the most basic in the FRP tendon concrete structure, also are the principal elements that influences FRP reinforced concrete behavior of members under loading, deformability etc.Because the material property of FRP muscle and reinforcing bar and configuration of surface is different, makes the adhesive property of FRP reinforced concrete and the adhesive property of reinforced concrete have larger difference.Therefore, the adhesive property between FRP muscle and the concrete is the emphasis problem that this area research personnel pay close attention to.

Interaction between FRP muscle and the concrete produces under influences such as total deadweight, constraint, be the external loads influence that cohesive action is subjected to more complicated between FRP muscle and the concrete, this will produce bigger influence to adhesive property between FRP muscle and the concrete.Therefore, under free restrained condition, carry out the FRP muscle and have certain difference with concrete binding performance test and truth.The device that the utility model proposes, true stressing conditions that can the model configuration member is carried out FRP and concrete binding performance test approaching under the true stressed situation.

Summary of the invention

The purpose of this utility model is can only have this problem of certain difference with concrete binding performance test and truth not being subjected to carry out the FRP muscle under the external loads effect at existing proving installation, design FRP muscle and concrete binding performance testing device under a kind of complicated applied force state that can simulate actual forced status, propose corresponding method of testing simultaneously.

The technical solution of the utility model is:

FRP muscle and concrete binding performance testing device under a kind of complicated applied force state, it is characterized in that it comprises vertical outside framework 1, vertical inner frame 2 and transverse frame 3, test specimen 22 is installed in the vertical inner frame 2 after clamping transverse frame 3 again, vertical inner frame 2 is installed in the vertical outside framework 1 again, the FRP muscle 23 of test specimen 22 links to each other with cupping machine after passing the top board of vertical outside framework 1, the bottom pull bar 7 of vertical outside framework 1 lower end also links to each other with cupping machine, test specimen 22 and bottom pull bar 7 be subjected to force direction opposite; Described vertical outside framework 1 comprises top steel plate 4, the first vertical column steel pole 5, the first bottom steel plate 6 and bottom pull bar 7, the first vertical column steel pole 5 passes top steel plate 4 and two ends, the first bottom steel plate, 6 back all are connected with nut 8, form a space that is used for installing vertical inner frame 2 between top steel plate 4 and the first bottom steel plate 6, an end of bottom pull bar 7 passes the first bottom steel plate, 6 backs and is fixed on the first bottom steel plate, 6 belows by two nuts 8; Described vertical inner frame 2 comprises the top steel plate 4 that shares with vertical outside framework 1, middle horizontal steel plate 9, second vertical column steel pole 10 and the second bottom steel plate 12, the upper end of the second vertical column steel pole 10 is connected with nut 8 after passing top steel plate 4, in the middle of passing, the lower end of the second vertical column steel pole 10 is connected with nut 8 behind horizontal steel plate 9 and the second bottom steel plate 12, and be set with the big rigidity pressure spring 11 that test specimen 22 is applied a directive effect power on the second vertical column steel pole 10 between horizontal steel plate 9 and the second bottom steel plate 12 in the middle of being located at, between the horizontal steel plate 9 in centre and top steel plate 4, form a space that has the test specimen 22 of transverse frame 3 for installation; Described transverse frame 3 comprises left side steel plate 13, middle stave sheet 14, horizontal steel pole 15 and right side steel plate 16, one end of horizontal steel pole 15 is connected with nut 8 after passing left side steel plate 13, in the middle of passing, the other end of horizontal steel pole 15 also is connected with nut 8 behind stave sheet 14 and the right side steel plate 16, horizontal steel pole 15 between middle stave sheet 14 and right side steel plate 16 is set with the big rigidity pressure spring 11 that test specimen 22 is applied another directive effect power, forms a space that clamps test specimen 22 between left side steel plate 13 and middle stave sheet 14; In various degree compress big rigidity pressure spring 11 and tighten corresponding nut 8 can by the counterparty of big rigidity pressure spring 11 corrective actions on test specimen to effect.

Described top steel plate 4 is provided with 9 circular holes, is respectively one and is used for passing the muscle hole 17 of FRP23, four hole 18 and four holes 19 that are used for passing the second vertical column steel pole 10 that are used for passing the first vertical column steel pole 5.

The described first bottom steel plate 6 is provided with 5 circular holes, is respectively hole 20, four holes 18 that the confession first vertical column steel pole 5 passes that supply bottom pull bar 7 to pass.

The horizontal steel plate 9 in described centre is provided with 5 circular holes, is respectively hole 17 and four holes 19 that the confession second vertical column steel pole 10 passes that supply the FRP muscle to pass.

Described bottom steel plate 12 is provided with 5 circular holes, is respectively hole 17 and four holes 19 that the confession second vertical column steel pole 10 passes that supply the FRP muscle to pass.

Left side steel plate 13, middle steel plate 14 and right side steel plate 16 are equipped with the circular hole 21 that four horizontal steel poles 15 of 4 confessions pass, and the aperture of circular hole 21 and horizontal steel pole 15 are adaptive.

Vertical inner frame 2, share top steel plate 4 with vertical outside framework 1, pass top steel plate 4, middle horizontal steel plate 9, big rigidity pressure spring 11, bottom steel plate 12 successively by the second vertical column steel pole 10, with nut 8 fixing formation, concrete sample is between top steel plate 4 and middle steel plate 9, and FRP muscle 23 passes top steel plate 4 interstitial holes 17 and stretches out.

Transverse frame 3 passes left side steel plate 13, concrete sample reserving hole, middle stave sheet 14, big rigidity pressure spring 11, right side steel plate 16 successively by horizontal steel pole 15, with nut 8 fixing formation, concrete sample is between left side steel plate 13 and middle steel plate 14.

Vertical outside framework 1 passes top steel plate 4, bottom steel plate 6 by the first vertical column steel pole 5, with nut 8 fixing formation, pull bar 7 is installed in the first bottom steel plate, 6 bottoms, and vertical inner frame 2 places in vertical outside framework 1 space that is formed by the first vertical column steel pole 5, top steel plate 4, the first bottom steel plate 6.

For easy for installation, the second vertical column steel pole 10 of vertical inner frame 2 and the horizontal steel pole 15 of transverse frame 3 can adopt same size, and corresponding nut 8 can adopt same size.

The beneficial effects of the utility model:

The Changing Pattern of FRP muscle and concrete binding anchoring property provides necessary test unit and method to the utility model under the different external loads effects in order to study, and test findings and engineering actual conditions are more approaching.

It is simple to the utlity model has device, easy to operate advantage.

Description of drawings

Fig. 1 is that the master of FRP muscle of the present utility model and concrete sample looks and left view;

Fig. 1 a is front view; Fig. 1 b is right view.

Fig. 2 is vertical inner frame synoptic diagram of the present utility model.

Fig. 3 is vertical inner frame of the present utility model and test specimen clamping synoptic diagram.

Fig. 4 is the synoptic diagram of transverse frame of the present utility model.

Fig. 5 is transverse frame of the present utility model and test specimen clamping synoptic diagram.

Fig. 6 is vertical inner frame of the present utility model, transverse frame and test specimen combination grip synoptic diagram.

Fig. 7 is the synoptic diagram of vertical outside framework of the present utility model.

Fig. 8 is vertical outside framework of the present utility model, vertical inner frame, transverse frame 3 and test specimen combination synoptic diagram.

Fig. 9 is the perforate synoptic diagram on the steel plate of top of the present utility model.

Figure 10 is the perforate synoptic diagram on the first bottom steel plate of the present utility model.

Figure 11 is the perforate synoptic diagram on the horizontal steel plate in centre of the present utility model and the second bottom steel plate.

Figure 12 is the perforate synoptic diagram on left side of the present utility model steel plate, middle stave sheet and the right side steel plate.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment one.

Shown in Fig. 1-12.

FRP muscle and concrete binding performance testing device under a kind of complicated applied force state, it comprises vertical outside framework 1 (Fig. 7), vertical inner frame 2 (Fig. 2) and transverse frame 3 (Fig. 4), test specimen 22 (Fig. 1) is installed in the vertical inner frame 2 after clamping transverse frame 3 again, vertical inner frame 2 is installed in the vertical outside framework 1 again, the FRP muscle 23 of test specimen 22 links to each other with cupping machine after passing the top board of vertical outside framework 1, the bottom pull bar 7 of vertical outside framework 1 lower end also links to each other with cupping machine, test specimen 22 and bottom pull bar 7 be subjected to force direction opposite.Described vertical outside framework 1 (Fig. 7) comprises top steel plate 4, the first vertical column steel pole 5, the first bottom steel plate 6 and bottom pull bar 7, the first vertical column steel pole 5 all is connected with nut 8 after passing the two ends of top steel plate 4 and the first bottom steel plate 6, form a space that is used for installing vertical inner frame 2 between top steel plate 4 and the first bottom steel plate 6, an end of bottom pull bar 7 passes the first bottom steel plate, 6 backs and is fixed on the first bottom steel plate, 6 belows by two nuts 8.Described vertical inner frame 2 (Fig. 2) comprises the top steel plate 4 that shares with vertical outside framework 1, middle horizontal steel plate 9, second vertical column steel pole 10 and the second bottom steel plate 12, the upper end of the second vertical column steel pole 10 is connected with nut 8 after passing top steel plate 4, in the middle of passing, the lower end of the second vertical column steel pole 10 is connected with nut 8 behind horizontal steel plate 9 and the second bottom steel plate 12, and be set with the big rigidity pressure spring 11 that test specimen 22 is applied a directive effect power on the second vertical column steel pole 10 between horizontal steel plate 9 and the second bottom steel plate 12 in the middle of being located at, between the horizontal steel plate 9 in centre and top steel plate 4, form a space that has the test specimen 22 of transverse frame 3 for installation.Transverse frame 3 (Fig. 4) comprises left side steel plate 13, middle stave sheet 14, horizontal steel pole 15 and right side steel plate 16, one end of horizontal steel pole 15 is connected with nut 8 after passing left side steel plate 13, in the middle of passing, the other end of horizontal steel pole 15 also is connected with nut 8 behind stave sheet 14 and the right side steel plate 16, horizontal steel pole 15 between middle stave sheet 14 and right side steel plate 16 is set with the big rigidity pressure spring 11 that test specimen 22 is applied another directive effect power, forms a space that clamps test specimen 22 between left side steel plate 13 and middle stave sheet 14; Compress big rigidity pressure spring 11 in various degree and tighten corresponding nut 8 can by the counterparty of big rigidity pressure spring 11 corrective actions on test specimen to acting force.Described top steel plate 4 is provided with 9 circular holes, is respectively one and is used for passing the muscle hole 17 of FRP23, four hole 18 and four holes 19 that are used for passing the second vertical column steel pole 10 that are used for passing the first vertical column steel pole 5, as Fig. 9.The first bottom steel plate 6 is provided with 5 circular holes, is respectively hole 20, four holes 18 that the confession first vertical column steel pole 5 passes that supply bottom pull bar 7 to pass, as Figure 10.The horizontal steel plate 9 in described centre is provided with 5 circular holes, is respectively hole 17 and four holes 19 that the confession second vertical column steel pole 10 passes that supply the FRP muscle to pass, as Figure 11.Also be provided with 5 circular holes on the described bottom steel plate 12, be respectively hole 17 and four holes 19 that the confession second vertical column steel pole 10 passes that supply the FRP muscle to pass.Left side steel plate 13, middle steel plate 14 and right side steel plate 16 are equipped with the circular hole 21 that four horizontal steel poles 15 of 4 confessions pass, and the aperture of circular hole 21 and horizontal steel pole 15 are adaptive, as Figure 12.

Vertical inner frame 2 shares top steel plate 4 with vertical outside framework 1, pass top steel plate 4, middle horizontal steel plate 9, big rigidity pressure spring 11, bottom steel plate 12 successively by the second vertical column steel pole 10, with nut 8 fixing formation, concrete sample 22 is between top steel plate 4 and middle horizontal steel plate 9, and the interstitial hole 17 that FRP muscle 23 passes on the top steel plate 4 stretches out.

Transverse frame 3 passes left side steel plate 13, concrete sample reserving hole, middle stave sheet 14, big rigidity pressure spring 11, right side steel plate 16 successively by horizontal steel pole 15, with nut 8 fixing formation, concrete sample is between left side steel plate 13 and middle stave sheet 14.

Vertical outside framework 1 passes top steel plate 4, the first bottom steel plate 6 by the first vertical column steel pole 5, with nut 8 fixing formation, pull bar 7 is installed in the first bottom steel plate, 6 bottoms, and vertical inner frame 2 places in vertical outside framework 1 space that is formed by the first vertical column steel pole 5, top steel plate 4, the first bottom steel plate 6.

For easy for installation, the second vertical column steel pole 10 of vertical inner frame 2 and the horizontal steel pole 15 of transverse frame 3 can adopt same size, and employed nut 8 can adopt same size.

Embodiment two.

FRP muscle and concrete binding performance test methods under a kind of complicated applied force state is characterized in that it comprises preparation, clamping and the tension test of test specimen.

The preparation method of test specimen and step are:

At first, carry out the preparation of die trial, 1 circular hole is respectively established in the center on the side template before and after die trial, be used for passing the FRP muscle, four corners respectively establish 4 circular holes on the side form of the die trial left and right sides, are used for wearing 4 pvc pipes, after concreting, form reserving hole, the hole of reserving is used for passing 4 horizontal steel poles 15 of transverse frame 3, installs when purpose is convenient vertical inner frame and transverse frame, as Fig. 1 and Fig. 6;

The second, FRP muscle and pvc pipe is fixing in die trial side form hole respectively after, casting concrete and vibration compacting;

The 3rd, form removal after the concrete hardening, form the FRP reinforced concrete anchoring test specimen 22 that 4 holes are laterally arranged, 21 positions, hole on the left side steel plate 13 of the position of 4 holes and pore size and transverse frame 3 and middle stave sheet 14, the right side steel plate 16 and size are corresponding, can pass successively with horizontal steel pole 15.

The clamping method of test specimen and step are:

At first, carry out the installation of transverse frame 3, left side steel plate 13 and middle steel plate 14 are placed the concrete sample both sides, 4 hole correspondences (Figure 12) that 4 holes 21 and concrete sample are reserved, pass left side steel plate 13, concrete sample, middle steel plate 14, big rigidity pressure spring 11, right side steel plate 16 successively with horizontal steel pole 15, two ends are fixing with nut 8, as shown in Figure 5;

Second, carry out the installation of vertical inner frame 2 and transverse frame 3 earlier, between the top steel plate 4 and middle horizontal steel plate 9 of test specimen as for vertical inner frame 2, FRP muscle stretch-draw end passes the FRP muscle hole 17 on the top steel plate 4,4 perpendicular second holes 19 of passing top steel plate 4 and middle stave sheet 9 to column steel pole 10 successively, big rigidity pressure spring 11, the second bottom steel plates, 12 holes 19 are also fixed at two ends with nut 8; Shown in Fig. 6,11;

The 3rd, laterally reach applying of vertical load, exert pressure with lifting jack and pressure transducer, the compression spring can carry out laterally and vertical the loading simultaneously, also can load one by one, note influencing each other of horizontal and vertical load, carry out certain super loading or secondary and load, when treating that load reaches testing program appointment numerical value, fix with nut, the spring by by compression to test specimen form stable laterally and vertical load;

The 4th, vertical outside framework 1 is installed, pass top steel plate 4 and the first bottom steel plate 6 with the first vertical column steel pole 5, and fix with nut;

The 5th, bottom pull bar 7 is installed, finish whole Unit Installation, as shown in Figure 8;

Tension test refers to that test specimen and device that clamping is finished are clamped on the testing machine, and FRP muscle stretch-draw end and bottom pull bar 7 fold with stiff end and the force side of cupping machine respectively, starts cupping machine and carries out tension test, the record test figure.

Because FRP muscle material is more crisp, can destroy because of the hydraulically operated fixture clamping of testing machine, therefore FRP muscle stretch-draw end can be overlapped a steel pipe and use the structure glue anchoring, apply pulling force by the clamping steel pipe.

The utility model does not relate to partly all, and the prior art that maybe can adopt same as the prior art is realized.

The above only is a kind of exemplifying embodiment of the utility model, is not so limits protection domain of the present utility model, and the equivalent structure that all utilization the utility model instructionss and accompanying drawing content are done changes, and all in like manner is included in the scope of the present utility model.

Claims (6)

1. FRP muscle and concrete binding performance testing device under the complicated applied force state, it is characterized in that it comprises vertical outside framework (1), vertical inner frame (2) and transverse frame (3), test specimen (22) is installed in the vertical inner frame (2) after clamping transverse frame (3) again, vertical inner frame (2) is installed in the vertical outside framework (1) again, the FRP muscle (23) of test specimen (22) links to each other with cupping machine after passing the top board of vertical outside framework (1), the bottom pull bar (7) of vertical outside framework (1) lower end also links to each other with cupping machine, test specimen (22) and bottom pull bar (7) be subjected to force direction opposite; Described vertical outside framework (1) comprises top steel plate (4), the first vertical column steel pole (5), the first bottom steel plate (6) and bottom pull bar (7), the first vertical column steel pole (5) passes top steel plate (4) and two ends, the first bottom steel plate (6) back all are connected with nut (8), form a space that is used for installing vertical inner frame (2) between top steel plate (4) and the first bottom steel plate (6), an end of bottom pull bar (7) passes the first bottom steel plate (6) back and is fixed on the first bottom steel plate (6) below by two nuts (8); Described vertical inner frame (2) comprises the top steel plate (4) that shares with vertical outside framework (1), middle horizontal steel plate (9), the second vertical column steel pole (10) and the second bottom steel plate (12), the upper end of the second vertical column steel pole (10) is connected with nut (8) after passing top steel plate (4), in the middle of passing, the lower end of the second vertical column steel pole (10) is connected with nut (8) behind horizontal steel plate (9) and the second bottom steel plate (12), and be set with the big rigidity pressure spring (11) that test specimen (22) is applied a directive effect power on the second vertical column steel pole (10) between horizontal steel plate (9) and the second bottom steel plate (12) in the middle of being located at, space that has the test specimen (22) of transverse frame (3) for installation of formation between the horizontal steel plate in centre (9) and top steel plate (4); Described transverse frame (3) comprises left side steel plate (13), middle stave sheet (14), horizontal steel pole (15) and right side steel plate (16), one end of horizontal steel pole (15) is connected with nut (8) after passing left side steel plate (13), in the middle of passing, the other end of horizontal steel pole (15) also is connected with nut (8) behind stave sheet (14) and the right side steel plate (16), horizontal steel pole (15) between middle stave sheet (14) and right side steel plate (16) is set with the big rigidity pressure spring (11) that test specimen (22) is applied another directive effect power, forms a space that clamps test specimen (22) between left side steel plate (13) and middle stave sheet (14).
2. proving installation according to claim 1, it is characterized in that described top steel plate (4) is provided with 9 circular holes, be respectively one and be used for passing the muscle hole (17) of FRP (23), four hole (18) and four holes (19) that are used for passing the second vertical column steel pole (10) that are used for passing the first vertical column steel pole (5).
3. proving installation according to claim 1 is characterized in that the described first bottom steel plate (6) is provided with 5 circular holes, is respectively hole (20), four holes (18) that the confession first vertical column steel pole (5) passes that supply bottom pull bar (7) to pass.
4. proving installation according to claim 1 is characterized in that the horizontal steel plate in described centre (9) is provided with 5 circular holes, is respectively hole (17) and four holes (19) that the confession second vertical column steel pole (10) passes that supply the FRP muscle to pass.
5. proving installation according to claim 1 is characterized in that described bottom steel plate (12) is provided with 5 circular holes, is respectively hole (17) and four holes (19) that the confession second vertical column steel pole (10) passes that supply the FRP muscle to pass.
6. proving installation according to claim 1, it is characterized in that left side steel plate (13), middle steel plate (14) and right side steel plate (16) are equipped with the circular hole (21) that four horizontal steel poles of 4 confessions (15) pass, the aperture of circular hole (21) and horizontal steel pole (15) are adaptive.
CN 201320208735 2013-04-23 2013-04-23 Bonding performance test device for FRP (Fiber Reinforced Plastic) rib and concrete under complex stress state CN203191293U (en)

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Application Number Priority Date Filing Date Title
CN 201320208735 CN203191293U (en) 2013-04-23 2013-04-23 Bonding performance test device for FRP (Fiber Reinforced Plastic) rib and concrete under complex stress state

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234902A (en) * 2013-04-23 2013-08-07 金陵科技学院 Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state
CN105510132A (en) * 2015-12-07 2016-04-20 河海大学 Sustained load application device and method for concrete chemically planted bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234902A (en) * 2013-04-23 2013-08-07 金陵科技学院 Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state
CN105510132A (en) * 2015-12-07 2016-04-20 河海大学 Sustained load application device and method for concrete chemically planted bar
CN105510132B (en) * 2015-12-07 2019-03-29 河海大学 Chemistry of concrete bar planting continuing load bringing device and its applying method

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Granted publication date: 20130911

Effective date of abandoning: 20141119