CN218003109U - Multi-angle unilateral bolt group test device - Google Patents

Abstract

The utility model discloses a multi-angle unilateral bolt group test device, which comprises: an installation assembly, a support frame and a tension assembly; the two installation assemblies are oppositely arranged, and the inside of the installation assembly is used for placing steel pipe concrete; At least one support is erected on the installation assembly; a plurality of tension assemblies are located in the circumferential direction of the steel pipe concrete, at least one tension assembly is arranged on the support frame, and the tension assembly arranged on the support frame and the circumferential direction of the steel pipe concrete There are installation angles between other tensile components. By arranging a plurality of tensile components in the circumferential direction of the steel tube concrete and connecting them with the test bolts in the steel tube concrete, and at least one tensile component is set on the support frame, so that the tensile components have multiple installations with each other Angle, and then construct the angle position required for bolt group tensile test. The utility model can realize multi-angle unilateral bolt group tensile test, and is detachable, has clear force transmission and is easy to manufacture.

Description

A multi-angle unilateral bolt group test device

technical field

The utility model relates to the technical field of civil engineering, in particular to a multi-angle unilateral bolt group test device.

Background technique

Concrete-filled steel tube structures are widely used in urbanization construction because they can make full use of the constraints between materials, realize synergy and complementarity, and work together. They have the advantages of high strength, good ductility, and convenient construction. When the chords are used, they are often welded with hollow steel tube webs to form various tube joints. After welding, the steel tube concrete joints form an irreversible whole, and the reuse and disassembly of components are facing challenges. As a new type of fastener, the unilateral bolt has the advantages of unilateral tightening, reliable mechanical performance, and convenient construction. It can solve the problem that ordinary high-strength bolts are difficult to apply to the construction and installation of closed-section members. The transformation of the disassembled composite structure provides feasibility. When unilateral bolt groups are used in steel tube concrete, the traditional welded part can be replaced by bolt connection to avoid damage to the components of the steel tube concrete structure during the dismantling process to achieve the purpose of structural disassembly.

At present, the relevant research on the basic mechanical properties of unilateral bolts in steel tube concrete is mostly based on the tensile performance of a single unilateral bolt, and there is a lack of experimental research on the tensile properties of unilateral bolt groups with different angles; the main reason is the lack of applicable Tensile performance test device of angled single-sided bolt group.

Therefore, the prior art still needs to be improved and developed.

Utility model content

In view of the shortcomings of the prior art above, the purpose of this utility model is to provide a multi-angle unilateral bolt group test device, aiming at solving the lack of tensile performance test devices suitable for different angle unilateral bolt groups in the prior art The problem.

In order to achieve the above object, the utility model has taken the following technical solutions:

In the first aspect, the embodiment of the utility model provides a multi-angle unilateral bolt group test device, which includes:

An installation assembly, the two installation assemblies are oppositely arranged, and the inside of the installation assembly is used for placing steel pipe concrete;

Support frame, at least one of the support frames is set on the installation assembly;

Tensile components, a plurality of the tensile components are located in the circumferential direction of the steel tube concrete, and connected with the test bolts in the steel tube concrete;

Wherein, at least one of the tensile assemblies is arranged on the support frame, and there is an installation angle between the tensile assembly arranged on the support frame and other tensile assemblies in the circumferential direction of the steel pipe concrete.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the installation assembly includes:

A stopper, the inside of the stopper is provided with a mounting hole for placing the steel pipe concrete, and the symmetrical sides of the stopper are provided with a first connection surface and a second connection surface inclined to the horizontal direction, the The first connection surface and the second connection surface are connected at an angle, and the stopper is connected to the support frame through the first connection surface or the second connection surface;

spacer, at least one of the spacers is arranged on the top surface of the block, the side of the spacer away from the block is a fixed surface, and the spacer is connected to the support frame through the fixed surface .

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the number of the spacers is one,

An included angle between the first connecting surface and the horizontal direction is equal to an included angle between the fixing surface and the horizontal direction, and the first connecting surface and the fixing surface are respectively connected to the support frame.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the number of the pads is two, and the two pads are symmetrically arranged on the top surface of the block;

An included angle between the second connecting surface and the horizontal direction is equal to an included angle between the fixing surface and the horizontal direction, and the second connecting surface and the fixing surface are respectively connected to the support frame.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the support frame includes:

a first beam, one side of the first beam is connected to the fixed surface, and the other side of the first beam is connected to the tensile assembly;

a second crossbeam, the second crossbeam is opposite to the first crossbeam, and the second crossbeam is connected to the first connecting surface or connected to the second connecting surface;

A connecting bolt, the connecting bolt is connected between the first beam and the second beam.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the tensile assembly includes:

Displacement meter backing plate, the displacement meter backing plate is arranged on the end of the test bolt away from the concrete filled steel tube;

A bolt sleeve, the bolt sleeve is arranged on the end of the test bolt away from the concrete filled steel tube, and abuts against the displacement gauge backing plate;

A displacement meter fixing plate, the displacement meter fixing plate is arranged on the end of the bolt sleeve away from the test bolt, and the displacement meter fixing plate is provided with a displacement meter fixing groove;

a displacement meter, the displacement meter is arranged on the displacement meter fixing plate through the displacement meter fixing groove;

Displacement meter fixture, described displacement meter fixture is arranged on described displacement meter fixing plate, and is detachably connected with described displacement meter;

Extending the screw rod, one end of the extending screw rod passes through the displacement meter fixing plate and is connected with the end of the bolt sleeve away from the test bolt;

A hydraulic actuator, the hydraulic actuator is movably connected with the other end of the extension screw, and the hydraulic actuator is also used for connecting with the first beam and the second beam.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the displacement gauge fixture includes:

The first clamping block, the second clamping block and the fixing bolt;

Both the first clamping block and the second clamping block are arranged on the displacement gauge fixing plate, and are clamped on both sides of the displacement gauge, and the fixing bolts are connected to the first clamping block and the displacement gauge Second clamping block.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the included angle between the first connection surface and the horizontal direction is 30°.

As a further improved technical solution, in the multi-angle unilateral bolt group test device, the included angle between the second connection surface and the horizontal direction is 45°.

The technical scheme adopted by the utility model has the following beneficial effects:

The utility model arranges two installation assemblies oppositely, then places the steel pipe concrete inside the installation assembly, and then arranges at least one support frame on the installation assembly; arranges a plurality of tensile assemblies on the circumferential direction of the steel pipe concrete, And connected with the test bolts in the steel tube concrete, at least one tensile component is arranged on the support frame, and there is a mounting clip between the tensile component set on the support frame and other tensile components in the circumferential direction of the steel tube concrete horn. Therefore, multiple tension components have multiple installation angles with each other, and then the angle positions required for the bolt group tensile test are constructed, and the requirements for the unilateral bolt group tensile test with different angles are realized. The multi-angle unilateral bolt group test device in the embodiment of the utility model can realize the multi-angle unilateral bolt group tensile test, and is detachable, has clear force transmission, is easy to manufacture, and has good economical efficiency.

Description of drawings

Fig. 1 is the perspective view of the first implementation structure of a kind of multi-angle unilateral bolt group test device provided by the utility model;

Fig. 2 is the front view of the first implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 3 is a top view of the first implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 4 is the left view of the first implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 5 is the three-dimensional view of the stopper in a kind of multi-angle unilateral bolt group test device provided by the utility model;

Fig. 6 is the front view of the block in the multi-angle unilateral bolt group test device provided by the utility model;

Fig. 7 is the left view of the block in the multi-angle unilateral bolt group test device provided by the utility model;

Fig. 8 is a perspective view of the connection between the tensile assembly and the concrete filled steel tube in a multi-angle unilateral bolt group test device provided by the present invention;

Fig. 9 is an enlarged view of place A in Fig. 8;

Fig. 10 is a front view of the connection between the tensile assembly and the concrete filled steel tube in a multi-angle unilateral bolt group test device provided by the present invention;

Fig. 11 is a perspective view of the second implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 12 is the front view of the second implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 13 is a top view of the second implementation structure of a multi-angle unilateral bolt group test device provided by the utility model;

Fig. 14 is a left view of the second implementation structure of a multi-angle unilateral bolt group test device provided by the utility model.

Reference signs: 100, installation component; 200, support frame; 300, tensile component; 10, steel pipe concrete; 20, test bolt; 110, stopper; 120, pad; 111, installation hole; 101, first connection 102, the second connection surface; 121, the fixed surface; 210, the first beam; 220, the second beam; 230, the connecting bolt; 310, the displacement gauge backing plate; 320, the bolt sleeve; 330, the displacement gauge fixing plate 340, displacement meter; 350, displacement meter fixture; 360, extension screw, 370, hydraulic actuator; 351, first clamping block; 352, second clamping block, 353, fixing bolt.

detailed description

In order to make the purpose, technical solution and effect of the utility model more clear and definite, the utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It should also be noted that the same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; , "Left", "Right" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limitations on this patent. For those of ordinary skill in the art, they can The specific meanings of the above terms shall be understood according to specific situations.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the prior art, the relevant research on the basic mechanical properties of unilateral bolts in steel tube concrete is mostly based on the tensile performance of a single unilateral bolt, and there is a lack of experimental research on the tensile properties of unilateral bolts with different angles. The main reason is that There is a lack of tensile performance test devices suitable for unilateral bolt groups with different angles.

Based on this, the present application hopes to provide a solution capable of solving the above-mentioned technical problems, the details of which will be described in subsequent embodiments.

The utility model discloses a multi-angle unilateral bolt group test device, please refer to Fig. 1 to Fig. 4 . The multi-angle unilateral bolt group test device disclosed in the utility model specifically includes: a mounting assembly 100, a support frame 200 and a tensile assembly 300; wherein, the two mounting assemblies 100 are oppositely arranged, and the mounting assembly 100 The interior of the steel pipe concrete is used to place the steel pipe concrete. Optionally, the number of installation assemblies 100 is two. The two installation assemblies 100 are symmetrical structures, and are arranged at intervals and on the same straight line. The interior is used to carry the steel pipe concrete 10. The steel pipe The concrete 10 is provided with a plurality of test bolts 20, which form the entire bolt group; the cross section of the steel pipe concrete 10 is rectangular, circular or oval; the material of the steel pipe in the steel pipe concrete 10 is ordinary steel, high-strength steel or stainless steel, The concrete material in the steel pipe concrete 10 is ordinary concrete or high-strength concrete; the strength grades of the test bolts 20 are 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 (that is, the performance grades of bolts for steel structure connection) .

Further, at least one support frame 200 is provided on the installation assembly 100, optionally, the support frame 200 is inclined to the horizontal direction; furthermore, a plurality of the tensile assemblies 300 are located on the concrete filled steel pipe 10, and connected with the test bolts 20 in the steel tube concrete 10; wherein, at least one of the tensile components 300 is set on the support frame 200, and the tension set on the support frame 200 There is an installation angle between the extension assembly 300 and other extension assemblies in the circumferential direction of the steel tube concrete 10 .

Specifically, the supporting frame 200 mainly plays the role of supporting the tensile assembly 300, is arranged above the installation assembly 100, and is in a state of detachable connection with the installation assembly 100. The number of tensile assemblies 300 connected to the concrete 10 is the same. The tensile assembly 300 is mainly used for performing a tensile test on the test bolt 20. There is an installation angle between the tensile assembly 300 arranged on the support frame 200 and other tensile assemblies in the circumferential direction of the steel tube concrete 10. Optionally , the value range of the installation angle is 45°, 60°, 90°, 135° or 150°.

The specific working principle of the multi-angle unilateral bolt group test device provided in this embodiment is as follows:

By arranging the two installation assemblies 100 on the same straight line, the steel pipe concrete 10 is arranged inside the installation assembly 100, and then a support frame 200 is arranged on the installation assembly 100, and the support frame 200 is inclined to the horizontal direction; Two tensile assemblies 300 are arranged on the circumferential direction of the steel pipe concrete 10, and are correspondingly connected with the test bolts 20 in the steel pipe concrete 10, wherein one tensile assembly 300 is arranged on the support frame 200, and the other tensile assembly 300 is set in the horizontal direction of the concrete or other peripheral directions of the concrete. Since the support frame 200 is inclined to the horizontal direction, the tensile assembly 300 installed on the support frame 200 and the tensile assembly 300 in the horizontal direction of the concrete or other peripheral directions of the concrete The upward tension component 300 has an installation angle, and then constructs the angle position required for the bolt group tensile test, so as to realize the requirements of the unilateral bolt group tensile test with different angles.

The beneficial effects of the multi-angle unilateral bolt group test device provided in this embodiment are at least:

The multi-angle unilateral bolt group test device in the embodiment of the utility model can realize the multi-angle unilateral bolt group tensile test, and perform tensile tests for test bolts 20 at different angles, and the test device is detachable, the force transmission is clear, and the production Simple and economical.

As a further solution, please refer to FIG. 1 and FIG. 5 together. The installation assembly 100 includes: a block 110 and a spacer 120; Hole 111, the first connecting surface 101 and the second connecting surface 102 inclined to the horizontal direction are provided on both symmetrical sides of the stopper 110, the first connecting surface 101 and the second connecting surface 102 are connected at an angle, The included angle α between the first connecting surface 101 and the horizontal plane and the included angle β between the second connecting surface 102 and the horizontal plane are different, and the stopper 110 connects with the described first connecting surface 101 or the second connecting surface 102 The support frame 200 is connected; at least one of the pads 120 is arranged on the top surface of the block 110, and the side of the pad 120 away from the block 110 is a fixed surface 121, and the pad 120 passes through the The fixing surface 121 is connected with the supporting frame 200 .

In the embodiment of the present utility model, please refer to Fig. 5 to Fig. 7 together, the block 110 is a symmetrical structure, the material of the block 110 is made of steel, and the inner surface of the block 110 is made to install hole 111, the mounting hole 111 is a semi-circular arc surface, and the arc radius of the semi-circular arc surface is equal to the diameter of the steel pipe concrete 10; the top surface of the block 110 is a plane, parallel to the horizontal direction, and The outer surface of 110 is made with two different inclined planes, that is, the first connection surface 101 and the second connection surface 102, the first connection surface 101 is connected with the top surface of the stopper 110, and the second connection surface 102 is connected with the first connection surface. face 101. In addition, the spacer 120 is a wedge-shaped spacer 120, which is also made of steel. Optionally, the section of the spacer 120 can be an isosceles triangle. Different included angles are used to make pads 120 of corresponding angles, so as to achieve the test purpose. Wherein, the angle α between the first connecting surface 101 and the horizontal direction is 30°, the angle β between the second connecting surface 102 and the horizontal direction is 45°, and the angle between the fixing surface 121 and the horizontal direction is, It is equal to the angle α between the first connection surface 101 and the horizontal direction or the angle β between the second connection surface 102 and the horizontal direction.

In actual use, because the number of pads 120 is more than one, and the angle between the first connection surface 101 and the second connection surface 102 and the horizontal direction is fixed, so when the number of pads 120 changes, the stopper The connection surface between 110 and support frame 200 will also change. Similarly, changing the number of pads 120 and changing the connection surface between the stopper 110 and the support frame 200 can change the angle between the entire support frame 200 and the horizontal direction.

In some embodiments, please refer to Fig. 1 and Fig. 5 together, the number of the spacer 120 is one, the angle α between the first connection surface 101 and the horizontal direction and the angle α between the fixed surface 121 and the horizontal direction The included angles are equal, and the first connecting surface 101 and the fixing surface 121 are respectively connected to the supporting frame 200 .

Specifically, the angle α between the first connecting surface 101 and the horizontal direction and the angle between the fixing surface 121 and the horizontal direction are both 30°, so the plane formed by the first connecting surface 101 and the fixing surface 121 can be aligned with the support The frame 200 plays a better connection. It can be concluded that the included angle between the support frame 200 arranged on the first connection surface 101 and the fixed surface 121 and the horizontal direction is 60°, that is to say, the tension frame 200 arranged on the support frame 200 The included angle between the extension assembly 300 and the extension assembly 300 arranged in the horizontal direction is 60°, so as to realize the bolt tension test at two different angles.

In other embodiments, please continue to refer to FIG. 5 , FIG. 11 to FIG. 14 , the number of the spacers 120 is two, and the two spacers 120 are symmetrically arranged on the top surface of the stopper 110 superior. The angle β between the second connecting surface 102 and the horizontal direction is equal to the angle between the fixing surface 121 and the horizontal direction, and the second connecting surface 102 and the fixing surface 121 are respectively connected to the support frame 200 .

Specifically, the included angle β between the second connecting surface 102 and the horizontal direction is 45°, and the included angle between the fixing surfaces 121 on the two pads 120 and the horizontal direction is also 45°, so the second connecting surface 102 and the fixed The plane formed by the surface 121 can be better connected with the support frame 200. It can be concluded that the angle between the support frame 200 and the horizontal direction arranged on the second connection surface 102 and the fixed surface 121 is 45°, that is to say, The included angle between the tensile assembly 300 arranged on the support frame 200 and the tensile assembly 300 arranged in the horizontal direction is 45°, so as to realize the bolt tension test at two different angles.

Therefore, through the first connection surface 101 or the second connection surface 102 in the block 110, the pads 120 and the support frame 200 of different numbers and angles are used to connect the tensile assembly 300 and other tensile assemblies in the circumferential direction of the steel tube concrete. Different installation angles are constructed, that is, the angles required for the bolt group tensile test (45°, 60°, 90°, 135° or 150°).

As a further solution, please continue to refer to FIG. 1, the support frame 200 includes: a first beam 210, a second beam 220 and a connecting bolt 230; the first beam 210 and the second beam 220 are symmetrical structures, mainly To erect the tension assembly 300, the first beam 210 and the second beam 220 of the tension assembly 300 erected on the support frame 200 and the tension assembly 300 in the horizontal direction or other circumferential tension assemblies 300 are both Cold-formed equilateral channel steel. One side of the first beam 210 is connected to the fixed surface 121, and the other side of the first beam 210 is connected to the tensile assembly 300; the second beam 220 is in the shape of the first beam 210 Symmetrically arranged, it can better play the role of stabilizing the tensile assembly 300. The second beam 220 is connected to the first connection surface 101 or to the second connection surface 102. When there is only one spacer 120 , and the angle between the first connection surface 101 and the horizontal direction and the angle between the fixed surface 121 and the horizontal direction are both 30°, then the second beam 220 is connected to the first connection surface 101, when the set pad 120 is Two times, and the angle between the second connection surface 102 and the horizontal direction and the angle between the fixed surface 121 and the horizontal direction is 45°, then the second beam 220 is connected to the second connection surface 102; the connection bolt 230 It is connected between the first beam 210 and the second beam 220 so that the first beam 210 and the second beam 220 are better fixed and not easy to fall off.

As a further solution, please refer to Fig. 1, Fig. 8 to Fig. 10, the tensile assembly 300 includes: a displacement gauge backing plate 310, a bolt sleeve 320, a displacement gauge fixing plate 330, a displacement gauge 340, and a displacement gauge clamp 350 , an extension screw 360 and a hydraulic actuator 370;

Wherein, the displacement gauge backing plate 310 is arranged on the end of the test bolt 20 away from the concrete filled steel pipe 10, which plays the role of increasing the contact area, reducing the pressure, and protecting the test bolt 20 and the bolt sleeve 320; The bolt sleeve 320 is arranged on the end of the test bolt 20 away from the concrete filled steel pipe 10, the end of the test bolt 20 is connected with the inner wall of the bolt sleeve 320 (such as threaded connection), and the bolt sleeve 320 is connected with the inner wall of the bolt sleeve 320. The displacement gauge backing plate 310 abuts against each other; the displacement gauge fixing plate 330 is arranged on the end of the bolt sleeve 320 away from the test bolt 20, and the displacement gauge fixing plate 330 is provided with a displacement gauge fixing groove (The displacement gauge 340 has been installed in the displacement gauge fixing groove, which is not marked in the figure), the displacement gauge fixing plate 330 not only plays the same role as the displacement gauge backing plate 310, but mainly fixes and supports it through the displacement gauge fixing groove The effect of the displacement meter 340; the displacement meter 340 is set on the displacement meter fixing plate 330 through the displacement meter fixing groove, and is used to test the relative displacement between the test bolt 20 and the steel tube concrete 10, so as to obtain the steel pipe The load-displacement curve of the concrete 10 is used to judge the strength of the bolt; optionally, the displacement meter 340 is a displacement sensor (Linear Variable Differential Transformer, LVDT), and the number of the displacement meter 340 can be multiple, such as four or six etc. Of course, the specific number of displacement gauges 340 can be set according to requirements.

Further, the displacement gauge clamp 350 is arranged on the displacement gauge fixing plate 330, and is detachably connected with the displacement gauge 340. The displacement gauge clamp 350 effectively clamps the displacement gauge 340 to prevent the displacement gauge 340 from Drop on the displacement meter fixing plate 330, and further fix the displacement meter 340; one end of the extension screw 360 passes through the displacement meter fixing plate 330 and is in contact with the end of the bolt sleeve 320 away from the test bolt 20. Connection, the extension screw 360 is a high-strength screw, its diameter and pitch are consistent with the test bolt 20, its strength is greater than the strength of the test bolt 20, to ensure that the test bolt 20 yields and fails before the extension screw 360 in the test load; For example, the strength of the test bolt 20 is not higher than grade 10.9, and the strength of the corresponding extension screw 360 is grade 12.9. In terms of materials, 40Cr, 35CrMo and 42CrMo are commonly used for grade 10.9 bolts; 35CrMo and 42CrMo are used for grade 12.9 bolts. During actual use, the material of the extension screw 360 can be selected as 35# steel or other high-quality materials, which can be heat-treated to improve the strength and bearable load than ordinary bolts of the same specification.

Further, please continue to refer to FIG. 1 , the hydraulic actuator 370 is movably connected with the other end of the extension screw 360 , and the hydraulic actuator 370 is also used to connect with the first beam 210 and the second beam 210 . The crossbeam 220 is connected to each other. In actual use, the hydraulic actuator 370 is a standardized active control output device. The test bolt 20 is pulled by extending the screw rod 360 until the test bolt 20 breaks. The specified stroke and range can be selected. The diameter of the extension screw 360 is configured with a standardized bolt clamp. It should be understood that the hydraulic actuator 370 is an existing device, so the specific model and structure of the hydraulic actuator 370 will not be introduced in this utility model.

It should be noted that, the utility model does not describe in detail the specific test process of the multi-angle unilateral bolt group test device.

As a further solution, please refer to FIG. 9, the displacement gauge clamp 350 includes: a first clamping block 351, a second clamping block 352 and a fixing bolt 353; the first clamping block 351 and the second clamping block The block 352 is a symmetrical structure, and the first clamping block 351 and the second clamping block 352 are both arranged on the displacement gauge fixing plate 330, and are clamped on both sides of the displacement gauge 340, and the first clamping The side of the holding block 351 and the second clamping block 352 facing the displacement meter 340 is adapted to the shape of the outer surface of the displacement meter 340, which can better clamp and fix the displacement meter 340, and the fixing bolt 353 is connected to the The first clamping block 351 and the second clamping block 352 make the first clamping block 351 and the second clamping block 352 better fixed and not easy to fall off.

The principle of the multi-angle unilateral bolt group test device provided by the utility model is further described below in combination with specific usage scenarios:

In the first aspect, take the 60° angle required for the bolt group tensile test as an example, that is, the installation angle between two tensile components is 60°. By arranging the two stoppers 110 on the same straight line, the concrete filled steel pipe 10 is placed in the installation hole 111 of the stopper 110, and then a spacer 120 is arranged on the top surface of the stopper 110, and a The tension assembly 300 is connected to the tension assembly 300 in the horizontal direction with the test bolt 20 at the corresponding position. Connect the first crossbeam 210 to the fixed surface 121, and connect the second crossbeam 220 to the first connection surface 101, because the angle between the first connection surface 101 and the horizontal direction and the angle between the fixed surface 121 and the horizontal direction are both 30°, it can be concluded that the angle between the entire support frame 200 and the horizontal direction is 60°, and the angle between the axis of the tensile assembly 300 arranged on the first beam 210 and the second beam 220 and the horizontal direction is also 60° , that is to say, the installation angle between the tension assembly 300 in the horizontal direction and the tension assembly 300 on the support frame 200 is 60°.

In the second aspect, take the 45° angle required for the bolt group tensile test as an example, that is, the installation angle between the two tensile components is 45°. By arranging the two stoppers 110 on the same straight line, the steel pipe concrete 10 is placed in the installation hole 111 of the stopper 110, and then the two pads 120 are arranged on the top surface of the stopper 110, and the horizontal direction A tension assembly 300 is used to connect the tension assembly 300 in the horizontal direction with the test bolt 20 at the corresponding position. The first beam 210 is connected to the fixed surface 121, and the second beam 220 is connected to the second connection surface 102, because the angle between the second connection surface 102 and the horizontal direction and the angle between the fixed surface 121 and the horizontal direction are both 45°, it can be concluded that the included angle between the entire support frame 200 and the horizontal direction is 45°, and the included angle between the axis of the tensile assembly 300 arranged on the first beam 210 and the second beam 220 and the horizontal direction is also 45° , that is to say, the installation angle between the tension assembly 300 in the horizontal direction and the tension assembly 300 on the support frame 200 is 45°.

In summary, the utility model provides a multi-angle unilateral bolt group test device, wherein the multi-angle unilateral bolt group test device includes: a mounting assembly, a support frame and a tensile assembly; the two mounting assemblies are It is arranged oppositely, and the interior of the installation component is used to place the steel tube concrete; at least one support is erected on the installation component; a plurality of tensile components are located in the circumferential direction of the steel tube concrete, and are connected with the test bolts in the steel tube concrete; wherein, at least A tensile assembly is arranged on the support frame, and there is an installation angle between the tensile assembly arranged on the support frame and other tensile assemblies in the circumferential direction of the steel tube concrete. The utility model arranges two installation assemblies oppositely, then places the steel pipe concrete inside the installation assembly, and then arranges at least one support frame on the installation assembly; arranges a plurality of tensile assemblies on the circumferential direction of the steel pipe concrete, And it is connected with the test bolts in the steel tube concrete, and at least one tensile component is arranged on the support frame, so that multiple tensile components have multiple installation angles required for the test, and then the bolt is constructed. The included angle position required for the group tensile test can meet the requirements of the group tensile test for unilateral bolts with different angles. The multi-angle unilateral bolt group test device in the embodiment of the utility model can realize the multi-angle unilateral bolt group tensile test, which solves the problem that the hydraulic actuator is difficult to be arranged obliquely, and is detachable, has clear force transmission, is easy to manufacture, and Economical.

Other embodiments of the present utility model will be readily conceivable to those skilled in the art after considering the specification and practicing the solutions disclosed herein. The utility model is intended to cover any modification, use or adaptation of the utility model, which follow the general principles of the utility model and include common knowledge or common knowledge in the technical field not disclosed in this disclosure. conventional technical means. The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention indicated by the appended claims.

Claims (9)

1. The utility model provides a unilateral bolt crowd test device of multi-angle which characterized in that includes:

the two mounting assemblies are oppositely arranged, and concrete filled steel tubes are placed in the mounting assemblies;

the supporting frames are arranged on the mounting assembly;

the stretching assemblies are positioned in the circumferential direction of the concrete filled steel tube and are connected with the test bolts in the concrete filled steel tube;

at least one tensile component is arranged on the support frame, and an installation included angle is formed between the tensile component on the support frame and other tensile components on the periphery of the concrete filled steel tube.

2. The multi-angle single-sided bolt group testing apparatus of claim 1, wherein the mounting assembly comprises:

the steel pipe concrete support comprises a support frame and a stop block, wherein the support frame is provided with a first connecting surface and a second connecting surface which are inclined to the horizontal direction, the first connecting surface and the second connecting surface are connected in an angle mode, and the stop block is connected with the support frame through the first connecting surface or the second connecting surface;

the cushion block is arranged on the top surface of the stop block, the side surface of the cushion block, which deviates from the stop block, is a fixed surface, and the cushion block is connected with the support frame through the fixed surface.

3. The multi-angle single-sided bolt group testing device of claim 2, wherein the number of the cushion blocks is one,

the included angle between the first connecting surface and the horizontal direction is equal to the included angle between the fixed surface and the horizontal direction, and the first connecting surface and the fixed surface are respectively connected with the supporting frame.

4. The multi-angle unilateral bolt group testing device according to claim 2, wherein the number of the cushion blocks is two, and the two cushion blocks are symmetrically arranged on the top surface of the stop block;

the second is connected the face and the contained angle of horizontal direction with the contained angle of stationary plane and horizontal direction equals, the second connect the face with the stationary plane respectively with the support frame is connected.

5. The multi-angle single-sided bolt group testing device of claim 2, wherein the support frame comprises:

one side of the first cross beam is connected with the fixing surface, and the other side of the first cross beam is connected with the stretching assembly;

the second cross beam is symmetrically arranged with the first cross beam and is connected with the first connecting surface or the second connecting surface;

a connecting bolt connected between the first and second cross beams.

6. The multi-angle single-sided bolt group testing apparatus of claim 5, wherein the stretching assembly comprises:

the displacement meter base plate is arranged on one end, away from the concrete filled steel tube, of the test bolt;

the bolt sleeve is arranged on one end, away from the concrete filled steel tube, of the test bolt and is abutted against the displacement meter base plate;

the displacement meter fixing plate is arranged at one end, away from the test bolt, of the bolt sleeve, and a displacement meter fixing groove is formed in the displacement meter fixing plate;

the displacement meter is arranged on the displacement meter fixing plate through the displacement meter fixing groove;

the displacement meter clamp is arranged on the displacement meter fixing plate and is detachably connected with the displacement meter;

one end of the extension screw rod penetrates through the displacement meter fixing plate and is connected with one end, away from the test bolt, of the bolt sleeve;

the hydraulic actuator, hydraulic actuator with the other end swing joint of extension screw rod, just hydraulic actuator still be used for with first crossbeam and second crossbeam are connected.

7. The multi-angle single-sided bolt group testing device of claim 6, wherein the displacement gauge clamp comprises:

the clamping device comprises a first clamping block, a second clamping block and a fixing bolt;

the first clamping block and the second clamping block are arranged on the displacement meter fixing plate and clamped on two side faces of the displacement meter, and the fixing bolt is connected with the first clamping block and the second clamping block.

8. The multi-angle single-sided bolt group testing apparatus as claimed in claim 3, wherein the angle between the first connecting surface and the horizontal direction is 30 °.

9. The multi-angle single-sided bolt group testing device of claim 4, wherein the angle between the second connecting surface and the horizontal direction is 45 °.

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