Anchoring part anti-seismic performance test device

Abstract

The utility model discloses a testing device for an anti-seismic property test of an anchoring part, and relates to the technical field of anti-seismic detection of anchoring parts. The anchoring part anti-seismic performance test device comprises a base which is fixedly installed at a designated position and serves as an installation substrate of the whole device, and the top of the base is provided with a guide rail; the fixing seat is fixedly connected to the top of the base and used for fixing one end of a steel bar in concrete; the movable sliding table is connected into the guide rail in a sliding manner; the movable seat is fixedly connected to the top of the movable sliding table and used for fixing the other end of the steel bar in the concrete; the at least one group of crack width loading assembly comprises two loading cylinders, the two loading cylinders are symmetrically arranged on the base, the two loading cylinders are arranged at an interval, the two loading cylinders are fixedly connected with the fixed seat, precast concrete to be tested is placed between the two loading cylinders, and the output ends of the loading cylinders are fixedly connected with the movable seat; and the testing tool and the testing mechanism are used for connecting the anchor rod in the concrete crack.

Description

Technical Field

[0001] The utility model relates to the technical field of earthquake-resistant detection of anchor pieces, and in particular to an earthquake-resistant performance test device for anchor pieces. Background Art

[0002] With the in-depth development of deep underground engineering construction in my country, we have encountered more and more complex geological conditions, and highly destructive engineering disasters such as rock bursts and impact ground pressure caused by high stress have become more and more serious. The seismic performance of anchor rods used under such conditions is the key to the effect of anchor support.

[0003] In order to test the impact resistance of the anchor rod, a corresponding testing device is required, but the existing testing device can only test the anchor in a static or fixed state, and the test results are inaccurate. Utility Model Content

[0004] To this end, an embodiment of the utility model provides an anchor anti-seismic performance test device to solve the problems existing in the above-mentioned technology.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] An anchor seismic performance test device, comprising:

[0007] The base is fixedly installed at a designated position and serves as a mounting base for the entire device, with a guide rail provided on the top;

[0008] A fixing seat, which is fixedly connected to the top of the base and is used to fix one end of the steel bar in the concrete;

[0009] A movable slide, wherein the movable slide is slidably connected to the guide rail;

[0010] A movable seat, the movable seat is fixedly connected to the top of the movable slide, and is used to fix the other end of the steel bar in the concrete;

[0011] At least one set of crack width loading components, including two loading cylinders, the two loading cylinders are symmetrically arranged on the base, the two loading cylinders are spaced apart, and the two loading cylinders are fixedly connected to the fixed seat, the precast concrete to be tested is placed between the two loading cylinders, and the output end of the loading cylinder is fixedly connected to the movable seat;

[0012] A testing tool is used to connect anchor rods in concrete cracks.

[0013] Optionally, the test fixture is a tensile test assembly, which includes a first variable amplitude pulsation loading head, an output end of which is connected to the end of an anchor bolt, and a body of which is fixedly connected to concrete.

[0014] Optionally, the test fixture is a shear test assembly, and the shear test assembly includes a second variable amplitude pulsation loading head, an output end of which is connected to the side wall of the anchor bolt, and a body of which is fixedly connected to the movable seat.

[0015] Optionally, the connection between the first variable amplitude pulsation loading head body and the concrete is a detachable fixed connection.

[0016] Optionally, the connection between the second variable amplitude pulsation loading head body and the movable seat is a detachable fixed connection.

[0017] Optionally, the output end of the loading cylinder is fixedly connected to the movable seat via a universal bearing.

[0018] The utility model has at least the following beneficial effects:

[0019] The utility model provides a movable slide and a movable seat sliding on a base, concrete blocks are prevented between the movable seat and the fixed seat, and steel bars in the concrete are fixed on the movable seat and the fixed seat. The movable seat is pushed or pulled by a loading cylinder of a crack width loading assembly to stretch or compress the steel bars, so that the gap of the prefabricated concrete with gaps changes, and the change of the gap to different degrees is controlled. The seismic performance of the anchor rod is tested through a test fixture, so that the seismic performance of the anchor rod under different fixed states or in a dynamic state can be tested, and the experimental results are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly explain the prior art and the present invention, the following briefly introduces the drawings required for describing the prior art and the present invention. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 This is a schematic diagram of the structure of the first viewing angle of the embodiment 1 of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the second viewing angle of Embodiment 1 of the present utility model;

[0024] Figure 3This is a schematic diagram of the structure of the second embodiment of the utility model from a third viewing angle;

[0025] Figure 4 This is a schematic diagram of the structure from the fourth viewing angle of Example 2 of the utility model.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Fixed seat; 3. Moving slide; 4. Movable seat; 5. Loading cylinder; 6. Concrete; 7. Anchor rod; 8. Test tooling; 81. Tensile test assembly; 82. Shear test assembly; 9. Steel bar; 10. Crack. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are intended to distinguish the objects referred to. For schemes with a sequential flow, this terminology does not have to be understood as describing a specific order or sequence. For schemes with device structures, this terminology does not distinguish between importance, positional relationships, etc.

[0030] In addition, the terms "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that have been explicitly listed, but may also include other steps or units that are not explicitly listed but are inherent to these processes, methods, products or apparatuses, or steps or units that are added based on further optimization schemes conceived by the present invention.

[0031] Example 1

[0032] like Figure 1 and Figure 2 As shown, a test device for earthquake resistance performance of anchor disclosed in the utility model comprises:

[0033] The base 1 is fixedly installed at a designated position and serves as a mounting base for the entire device, with a guide rail provided on the top;

[0034] A fixing seat 2, the fixing seat 2 is fixedly connected to the top of the base 1 and is used to fix one end of the steel bar 9 in the concrete 6;

[0035] A movable slide 3, wherein the movable slide 3 is slidably connected in the guide rail;

[0036] A movable seat 4, which is fixedly connected to the top of the movable slide 3 and is used to fix the other end of the steel bar 9 in the concrete 6;

[0037] At least one set of crack width loading components, including two loading cylinders 5, the two loading cylinders 5 are symmetrically arranged on the base 1, the two loading cylinders 5 are arranged at an interval, and the two loading cylinders 5 are fixedly connected to the fixed seat 2, the precast concrete 6 to be tested is placed between the two loading cylinders 5, and the output end of the loading cylinder 5 is fixedly connected to the movable seat 4;

[0038] A testing device 8 is used to connect the anchor rod 7 in the crack 10 of the concrete 6.

[0039] The base 1 is fixed in a laboratory or at a designated location outdoors to ensure its stability;

[0040] The movable slide 3 is installed on the guide rail of the base 1, and the movable seat 4 is fixedly installed on the top of the movable slide 3. The movable seat 4 can slide on the base 1 through the movable slide 3;

[0041] At least one group of crack width loading components is provided, each group includes two symmetrical loading cylinders 5, and the two loading cylinders 5 are symmetrical about the anchor rod 7;

[0042] The concrete 6 is a prefabricated sample, on which a gap is preset to simulate a crack 10 in the concrete 6, and the anchor rod 7 to be tested is inserted into the concrete 6 from the gap and fixed;

[0043] The above-mentioned test fixture 8 is used to be connected with the anchor rod 7 to test the seismic performance of the anchor rod 7. The specific connection method can adopt a conventional connection method, which will not be described in detail here.

[0044] The test fixture 8 is a tensile test assembly 81 , which includes a first variable amplitude pulsating loading head, an output end of which is connected to the end of the anchor bolt, and a body of which is fixedly connected to the concrete 6 .

[0045] The above-mentioned test tool 8 is a tensile test component 81, and the present embodiment is used to test the tensile performance of the anchor rod 7; the tensile test component 81 is specifically a first variable amplitude pulsating loading head (with electro-hydraulic servo control), which is connected to the anchor rod 7 through the electro-hydraulic servo-controlled loading head, and a displacement measurement sensor is installed at the head of the anchor rod 7 to detect the displacement of the anchor bolt and record it in real time, and perform variable amplitude pulsating stretching according to standard requirements.

[0046] The connection between the first variable amplitude pulsation loading head body and the concrete 6 is a detachable fixed connection.

[0047] The first variable amplitude pulsating loading head body is a test fixture, which is used to fix the loading head and to support and fix the loading head. Conventional fixation can be used here and will not be elaborated here.

[0048] Example 2

[0049] The difference between this embodiment and embodiment 1 is that:

[0050] The test fixture 8 is a shear test assembly 82 , which includes a second variable amplitude pulsating loading head, an output end of which is connected to the side wall of the anchor bolt, and a body of which is fixedly connected to the movable seat 4 .

[0051] In this embodiment, the test fixture 8 is a shear test assembly 82, which is installed on one side of the movable seat 4, and its output end is connected to the side wall of the anchor rod 7 to apply shear force to the anchor rod 7 to test the shear resistance of the anchor rod 7.

[0052] The connection between the second variable amplitude pulsation loading head body and the movable seat 4 is a detachable fixed connection.

[0053] In the above two embodiments

[0054] The output end of the loading cylinder 5 is fixedly connected to the movable seat 4 via a universal bearing.

[0055] The loading cylinder 5 and the movable seat 4 are fixedly connected via a universal bearing, so that the stress concentration can be reduced.

[0056] The sample (concrete to be tested 6) is installed. The sample is placed inside the main machine, and the front and rear bolts are fastened between the movable slide 3 and the fixed seat 2. The crack 10 measurement sensors (4 pieces) are installed, two on the upper surface of the sample and two on the side of the sample;

[0057] The crack 10 is expanded by using a crack width loading assembly composed of two loading cylinders 5, and the crack 10 is controlled by two horizontal sets of servo-controlled loading cylinders 5;

[0058] Apply tensile load; through the electro-hydraulic servo-controlled loading head and test fixture, a displacement measurement sensor is installed on the anchor bolt head to detect the displacement of the anchor bolt and record it in real time, and perform variable amplitude pulsating stretching according to standard requirements;

[0059] During the test process, the three sets of oil cylinders are controlled by the control system to control the width of the crack 10 according to the standard requirements;

[0060] The computer automatically records the variable amplitude tensile force, crack width, tensile stroke, anchor force and displacement, etc.

[0061] It also includes a control system, and the loading cylinder 5 and the test fixture 8 are controlled by the control system to control the width of the crack 10 according to the standard requirements;

[0062] The test platform + fixed seat 2 + movable slide 3 constitute the mainframe base 1;

[0063] The rear portion is provided with a fixing seat 2 for mounting two sets of crack 10 width loading cylinders 5;

[0064] The front part is matched with a movable slide 3, and the bottom of the slide is matched with a universal bearing and a transition plate. The slide is movable to facilitate the adjustment of the width of the crack 10;

[0065] The fixing seat 2 and the slide have long holes for connecting the concrete 6 and the tensile steel bars 9 through nuts, so as to fix the initial installation position of the specimen and facilitate the subsequent electro-hydraulic servo loading adjustment of the width of the crack 10;

[0066] There are three sets of servo actuators

[0067] Two sets of servo loading special actuators, as loading cylinder 5, suitable for vibration impact test and endurance fatigue life test;

[0068] The piston and piston cylinder are hard plated and polished by special process, which is suitable for long-term dynamic experiments;

[0069] Imported high-speed sealing elements are used to seal between the piston and the cylinder, and between the piston rod and the end cover. High-speed wear-resistant support rings are used for support, which makes the actuator rigid and has strong anti-directional measurement ability;

[0070] Actuator magnetostrictive displacement sensor, external electro-hydraulic servo valve, force sensor, with two closed-loop control circuits of force and displacement;

[0071] Sample tooling

[0072] It is equipped with a servo actuator for loading and a closed bracket type tooling;

[0073] When loaded vertically, the hinged tension cup at the piston rod head is connected to the mechanical anchor bolt;

[0074] During the shear test, the hinged shear plate at the piston rod head is connected to the mechanical anchor bolt;

[0075] The specimen is connected by the tensile bowl connection method, and a nut is required at the head of the specimen.

[0076] Servo pump station

[0077] The total flow rate is not less than 18L / min, and the pressure is 21Mpa;

[0078] Total power 7.5Kw, 380V, AC;

[0079] The pump station is manufactured according to standard modular design, with mature technology, stable performance and fully enclosed packaging design;

[0080] The pump station consists of oil pump, motor, high and low pressure switching valve group, accumulator, oil filter, oil tank, pipeline system, etc.

[0081] The filtration system adopts three-stage filtration, with the oil pump suction port at 100μ, the oil source outlet, the filtration accuracy at 3μ, the relay voltage stabilizing module, and the filtration height at 3μ.

[0082] The above specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0083] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0084] The above is a relatively specific and detailed description of the utility model through general description and specific embodiments. It should be pointed out that, without departing from the concept of the utility model, it is obvious that several variations and improvements can be made to these specific embodiments, which all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be based on the attached claims.

Claims

1. An anchor seismic performance test device, characterized in that: include: The base is fixedly installed at a designated position and serves as a mounting base for the entire device, with a guide rail on the top; A fixing seat, which is fixedly connected to the top of the base and is used to fix one end of the steel bar in the concrete; A movable slide, wherein the movable slide is slidably connected to the guide rail; A movable seat, the movable seat is fixedly connected to the top of the movable slide, and is used to fix the other end of the steel bar in the concrete; At least one set of crack width loading components, including two loading cylinders, the two loading cylinders are symmetrically arranged on the base, the two loading cylinders are spaced apart, and the two loading cylinders are fixedly connected to the fixed seat, the precast concrete to be tested is placed between the two loading cylinders, and the output end of the loading cylinder is fixedly connected to the movable seat; A test fixture is used to connect anchor rods in concrete cracks.

2. The anchor seismic performance test device according to claim 1, characterized in that: The test fixture is a tensile test assembly, which includes a first variable amplitude pulsating loading head, an output end of which is connected to the end of the anchor bolt, and a body of which is fixedly connected to the concrete.

3. The anchor seismic performance test device according to claim 1, characterized in that: The test fixture is a shear test assembly, which includes a second variable amplitude pulsation loading head, an output end of which is connected to the side wall of the anchor bolt, and a body of which is fixedly connected to the movable seat.

4. The anchor seismic performance test device according to claim 2, characterized in that: The connection between the first variable amplitude pulsation loading head body and the concrete is a detachable fixed connection.

5. The anchor seismic performance test device according to claim 3, characterized in that: The connection between the second variable amplitude pulsation loading head body and the movable seat is a detachable fixed connection.

6. The anchor seismic performance test device according to claim 1, characterized in that: The output end of the loading cylinder is fixedly connected to the movable seat via a universal bearing.

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