CN111829764A - Mechanical measurement device for right-angle reinforced concrete member and use method - Google Patents
Mechanical measurement device for right-angle reinforced concrete member and use method Download PDFInfo
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- CN111829764A CN111829764A CN202010512793.0A CN202010512793A CN111829764A CN 111829764 A CN111829764 A CN 111829764A CN 202010512793 A CN202010512793 A CN 202010512793A CN 111829764 A CN111829764 A CN 111829764A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
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Abstract
The invention provides a mechanical measurement device for a right-angle reinforced concrete member and a use method, and relates to the technical field of decoration design. The mechanical measuring device for the right-angle reinforced concrete member and the using method thereof have the advantages of simple structure, high loading efficiency, low construction difficulty, high safety, no interference of other devices, high mechanical measuring accuracy and suitability for measuring test pieces of various specifications.
Description
Technical Field
The invention relates to the technical field of mechanical measurement,
in particular, the invention relates to a mechanical measuring device for a right-angle reinforced concrete member and a using method thereof.
Background
The reinforced concrete is widely applied, the most used is the beam column plate member with a regular shape, and along with the improvement of the living standard of human beings and the improvement of the complexity of urban construction, a plurality of special-shaped reinforced concrete members are applied to design and construction. The right-angle member is in a common special-shaped form and is widely applied to underground engineering such as box culvert pipe galleries. The existing mechanical property testing machine is designed aiming at a regular test piece, and a linear loading form is adopted when mechanical properties such as a component load limit and the like are measured. The mechanical property of the right-angle component is evaluated by paying more attention to the capability of bearing bending moment at the corner point, and the right-angle component obviously cannot adopt direct compression or direct pulling to test the mechanical property of a certain wing.
The prior research and patents focus on the development of testing machines and auxiliary devices and methods of use for test pieces with regular shapes, such as patent application nos.: 201810690423.9 discloses a bias test piece loading aid structure; the mechanism introduces the one-way hinge concept, but is directed to regular column members. The literature, "assembly and superposition type concrete underground comprehensive pipe gallery stress performance test research" mentions right-angle member loading, and proposes a one-way hinge concept loading scheme, but the literature has unknown description on the specific implementation mode of the one-way hinge, and in addition, the bottom one-way hinge adopts a pier seat-free mode, so that a pier seat is not easy to slip in actual loading, measures such as a left side rope, a right side rope, a support and the like are often required to be added in order to reduce danger, the axial stress of a test piece is influenced, and the obtained mechanical test result is questioned.
Therefore, in order to solve the above problems, it is necessary to design a reasonable mechanical measuring device or using method for right-angle reinforced concrete members.
Disclosure of Invention
The invention aims to provide a mechanical measuring device for right-angle reinforced concrete members, which has the advantages of simple structure, convenience in loading test pieces, high loading efficiency, low construction difficulty, high safety, no interference of other devices and high mechanical measurement accuracy, and is suitable for measuring the test pieces of various specifications.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a mechanical measuring device for a right-angle reinforced concrete member comprises a test frame and a test part for testing a test piece, the test rack comprises a top plate and a bottom plate, the test part comprises a first test part close to the top plate and a second test part close to the bottom plate, the first testing part comprises a fixing plate, a first plate and a second plate which is perpendicular to the first plate, the first plate and the second plate are both connected with the fixed plate through reinforcing ribs, the fixed plate is connected with the testing machine actuating head arranged on the top plate through a preassembled spherical hinge, the second testing part comprises a base, a right-angle wing and a shaft roller for connecting the base and the right-angle wing, the base upper portion be provided with be used for with last notch that the beam barrel is connected, right angle wing lower part be provided with be used for with the lower notch that the beam barrel is connected, the width of going up notch and lower notch is all not greater than the external diameter of beam barrel.
Preferably, the test frame is further provided with a hanging wheel and a guy cable for hanging the test piece.
Preferably, the number of the reinforcing ribs is at least one.
Preferably, the right-angle wing includes a third plate disposed above the lower notch and a fourth plate disposed perpendicular to the third plate, and both the third plate and the fourth plate are connected to the upper end of the lower notch through a ribbed plate.
Preferably, the number of the ribbed plates is at least one.
Preferably, the base is provided with a connecting bolt for connecting the base to the bottom plate.
Preferably, the number of the connecting bolts is at least one.
Preferably, the test rack is further provided with a support frame for supporting the test piece to prevent the test piece from falling.
Preferably, the height of the upper notch and the lower notch is not less than 1/5 of the outer diameter of the shaft roller.
Preferably, the lengths of the first plate, the second plate, the third plate and the fourth plate are not less than 2/3 of the thickness of the test piece.
Preferably, the side surface of the upper notch is also provided with a reinforcing plate.
The invention also provides a using method of the mechanical measuring device for the right-angle reinforced concrete member, which comprises the following steps:
s1: mounting the first testing part on a testing machine actuating head on a top plate of the testing frame through a pre-installed spherical hinge;
s2: mounting a second testing part on the bottom plate of the test frame, and hoisting the test piece to the position where the lower end of the test piece is clamped to the right-angle wing;
s3: hoisting the test piece, and rotating the test piece around the right-angled wing at the lower end of the test piece until the angle between the test piece and the plane is 45 degrees;
s4: the testing machine moves the actuating head downwards to connect the first testing part with the top end of the testing piece, and finely adjusts the preassembled spherical hinge to clamp the top end of the testing piece between the first plate and the second plate;
s5: and loading pressure to the test piece by the actuating head of the testing machine to perform mechanical measurement.
Preferably, in the steps S2 and S3, the test piece is hoisted by the hoisting wheels and the cables on the test stand.
Preferably, in step S5, a slidable support frame is mounted on the testing frame, the testing machine actuator head pre-loads twice the weight of the testing piece as a pre-loading load to the top end of the testing piece, so that the testing piece and the testing frame form a stable two-force rod system, the support frame is removed, and the testing machine actuator head continues to load pressure on the testing piece for mechanical measurement.
The mechanical measuring device for the right-angle reinforced concrete member and the using method have the beneficial effects that: simple structure, the test piece loads the convenience, and loading efficiency is high, and the construction degree of difficulty is low, and the security is high, does not have other devices to disturb, and the mechanical measurement rate of accuracy is high, and is applicable to the test piece of multiple specification and measures.
Drawings
FIG. 1 is a schematic perspective view of a mechanical measuring device for right-angle reinforced concrete members according to the present invention;
FIG. 2 is a schematic front view of a mechanical measuring device for right-angle reinforced concrete members according to the present invention;
FIG. 3 is a schematic structural diagram of a first testing part of the mechanical measuring device for the right-angle reinforced concrete member, which is disclosed by the invention;
FIG. 4 is a schematic structural diagram of a second testing part of the mechanical measuring device for right-angle reinforced concrete members, which is disclosed by the invention;
FIG. 5 is a schematic front view of a second testing part of the mechanical measuring device for right-angle reinforced concrete members, which is disclosed by the invention;
FIG. 6 is a flow chart illustrating a method of using the mechanical measuring device for right-angle reinforced concrete members according to the present invention;
in the figure: 1. the testing machine comprises a testing frame, 11, a top plate, 111, a testing machine actuating head, 12, a bottom plate, 2, a first testing part, 21, a first plate, 22, a second plate, 23, a fixing plate, 24, a reinforcing rib, 3, a second testing part, 31, a base, 311, an upper notch, 312, a connecting bolt, 32, a right-angle wing, 321, a lower notch, 322, a third plate, 323, a fourth plate, 324, a ribbed plate, 33, a shaft roller, 4, a testing piece, 5, a preassembled ball hinge, 6 and a supporting frame.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
The existing literature has unknown concrete implementation modes of the one-way hinges, and in addition, the one-way hinge at the bottom adopts a pier seat-free mode, so that the pier seat-free mode is very easy to slip during actual loading, measures such as a left rope, a right rope, a support and the like are often required to be added in order to reduce risks, the axial stress of a test piece is influenced, and the obtained mechanical test result is questioned.
The first embodiment is as follows: as shown in fig. 1 to 5, which are only one embodiment of the present invention, a mechanical measuring device for a right-angle reinforced concrete member comprises a test frame 1 and a test part 2 for testing a test piece 4, wherein the test frame 1 comprises a top plate 11 and a bottom plate 12, the test part 2 comprises a first test part 2 close to the top plate 11 and a second test part 3 close to the bottom plate 12, the first test part 2 comprises a fixed plate 23, a first plate 21 and a second plate 22 arranged perpendicular to the first plate 21, the first plate 21 and the second plate 22 are connected with the fixed plate 23 through reinforcing ribs 24, the fixed plate 23 is connected with a tester actuating head 111 arranged on the top plate 11 through a pre-assembled ball hinge 5, the second test part 3 comprises a base 31, a right-angle wing 32 and a shaft roller 33 for connecting the base 31 with the right-angle wing 32, the upper portion of the base 31 is provided with an upper notch 311 used for being connected with the shaft roller 33, the lower portion of the right-angle wing 32 is provided with a lower notch 321 used for being connected with the shaft roller 33, and the widths of the upper notch 311 and the lower notch 321 are not larger than the outer diameter of the shaft roller 33.
In the invention, the first testing part 2 is arranged above, the second testing part 3 is arranged below, the testing piece 4 is arranged between the first testing part 2 and the second testing part 3, the lower end of the testing piece 4 is connected with the right-angle wing 32 of the second testing part 3, the upper end of the testing piece 4 is connected with the right-angle plate formed by the first plate 21 and the second plate 22 of the first testing part 2, the pre-loading ball hinge 5 is pressed down through the testing machine actuating head 111 on the top plate 11, pre-loading force is applied to the testing piece 4 through the first testing part 2, and thus the mechanical property of the testing piece is measured.
In addition, the lower notch 321 of the right-angle wing 32 is connected with the shaft roller 33, the upper notch 311 of the base 31 is connected with the shaft roller 33, the widths of the upper notch 311 and the lower notch 321 are not greater than the outer diameter of the shaft roller 33, and actually, the widths of the upper notch 311 and the lower notch 321 are slightly smaller than the outer diameter of the shaft roller 33, so that the shaft roller 33 can roll in the upper notch 311 and the lower notch 321, and the upper end point and the lower end point of the shaft roller 22 can be contacted with the bottom plates of the upper notch 311 and the lower notch 321 while the shaft roller 22 can be prevented from horizontally sliding out, as shown in fig. 5, so that the right-angle wing 32 can rotate around the shaft roller 33.
In addition, how to load the test piece 4 between the first test part 2 and the second test part 3, the lower end of the test piece 4 is clamped at the right-angle wing 32, at this time, the upper end of the test piece 3 is lifted, so that the lower end of the test piece 3 is fixed at the right-angle wing 32 and rotates around the shaft roller 33 until the upper end of the test piece 3 is positioned below the first test part 2, at this time, the first test part 2 is pushed to move downwards by the pre-assembled ball hinge 5 through the actuating head 111 of the test machine until the right-angle plate formed by the first plate 21 and the second plate 22 of the first test part 2 is clamped at the upper end of the test piece 4, and at this time, the loading of the test piece 4 is completed.
It should be noted that, still be provided with on the test jig 1 and be used for the hoist and mount test piece 4's hanging wheel and cable use hanging wheel and cable, can be more convenient hoist and mount test piece 4, after test piece 4 loaded, it can to untie the stay cord.
Finally, still be provided with on the test jig 1 and be used for supporting test 4 anti-drop's support frame 6, support frame 6 can the displacement, and at the in-process of test 4 upswept, support frame 6 progressively fills in to the test 4 below of slope, prevents that the cable is not hard up to make test 4 drop, when the installation of accomplishing test 4, needs further confirm whether test 4 is installed, and the thinking is as follows: the testing machine actuates the head 111 and pre-loads the gravity of twice test piece 4 as preloading load to the top of test piece 4, makes test piece 4 and test jig 1 form the two power pole systems of stability, accomplishes the confirmation that test piece 4 loaded the completion this moment, then removes support frame 6, and the testing machine actuates head 111 and continues to load pressure to test piece 4, carries out mechanical measurement.
Therefore, other devices (the pull rope and the support frame 6) do not interfere with the mechanical measurement of the test piece 4, and the measured data has high accuracy.
The device can be used for right-angle components, T-shaped components, L-shaped components and the like, and can also be used for loading components with multiple sizes, so that the processing cost of the device is saved.
The mechanical measuring device for the right-angle reinforced concrete member is simple in structure, convenient to load a test piece, high in loading efficiency, low in construction difficulty, high in safety, free of interference of other devices, high in mechanical measuring accuracy and suitable for measuring the test pieces of various specifications.
Second embodiment, as shown in fig. 1 to 5, is only one embodiment of the present invention, and in order to make the loading effect of the mechanical measuring device for right-angle reinforced concrete members of the present invention better and the stability degree higher, the present invention has the following design.
Firstly, the first plate 21 and the second plate 22 are both connected with the fixing plate 23 through the reinforcing ribs 24, and the number of the reinforcing ribs 24 is at least one, so that the stability of the first plate 21 and the second plate 22 is ensured, and the first testing part 2 is stable and safe and has good testing effect when prepressing the testing piece 4 downwards.
Then, the right-angle wing 32 includes a third plate 322 disposed above the lower notch 321 and a fourth plate 323 disposed perpendicular to the third plate 322, the third plate 22 and the fourth plate 323 are both connected to the upper end of the lower notch 321 by a rib 324, and the number of the rib 324 is at least one. The structural strength of the second testing part 3 is ensured, and the influence of the elastic tension of the second testing part 3 on the testing result of the testing piece 4 is avoided.
Of course, the base 31 is provided with a connecting bolt 312 for connecting the base 31 to the bottom plate 12, the base 31 is fixed, and the number of the connecting bolts 312 is at least one.
In addition, the heights of the upper notch 311 and the lower notch 321 are not smaller than 1/5 of the outer diameter of the shaft roller 33, so that the shaft roller 33 is prevented from rolling out of the upper notch 311 and the lower notch 321 and falling off.
And 2/3 the length of each of first plate 21, second plate 22, third plate 322 and fourth plate 323 is not less than the thickness of test piece 4. The width of the first plate 21, the second plate 22, the third plate 322 and the fourth plate 323 is not less than 4/5, which is the width of the test piece 4 in the lateral direction, so that the test piece 4 is more stable in the test.
Finally, the side surface of the upper notch 311 is also provided with a reinforcing plate to prevent the shaft roller 33 from being pressed too much to crush the upper notch 311.
In a third embodiment, as shown in fig. 1 to 6, the present invention further provides a method for using a mechanical measuring device for a right-angle reinforced concrete member, including the following steps:
s1: mounting the first testing part on a testing machine actuating head on a top plate of the testing frame through a pre-installed spherical hinge;
s2: mounting a second testing part on the bottom plate of the test frame, and hoisting the test piece to the position where the lower end of the test piece is clamped to the right-angle wing;
s3: hoisting the test piece, and rotating the test piece around the right-angled wing at the lower end of the test piece until the angle between the test piece and the plane is 45 degrees;
s4: the testing machine moves the actuating head downwards to connect the first testing part with the top end of the testing piece, and finely adjusts the preassembled spherical hinge to clamp the top end of the testing piece between the first plate and the second plate;
s5: and loading pressure to the test piece by the actuating head of the testing machine to perform mechanical measurement.
It should be noted that, when steps S2 and S3 are executed, the test piece is hoisted by the hoisting wheels and the cables on the test stand.
In addition, when step S5 is executed, a slidable support frame is installed on the test frame, the testing machine moves the head to pre-load twice the weight of the test piece as a pre-loading load to the top end of the test piece, so that the test piece and the test frame form a stable two-force rod system, the support frame is removed, the testing machine moves the head to continue to load pressure to the test piece, and the mechanical measurement is performed.
The mechanical measuring device for the right-angle reinforced concrete member and the using method have the advantages of simple structure, convenience in loading of the test piece, high loading efficiency, low construction difficulty, high safety, no interference of other devices, high mechanical measurement accuracy and suitability for measuring the test pieces of various specifications.
The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A mechanical measurement device for right angle reinforced concrete member which characterized in that: the device comprises a test rack (1) and a test part for testing a test piece (4), wherein the test rack (1) comprises a top plate (11) and a bottom plate (12), the test part comprises a first test part (2) close to the top plate (11) and a second test part (3) close to the bottom plate (12), the first test part (2) comprises a fixed plate (23), a first plate (21) and a second plate (22) perpendicular to the first plate (21), the first plate (21) and the second plate (22) are connected with the fixed plate (23) through reinforcing ribs (24), the fixed plate (23) is connected with a tester actuating head (111) arranged on the top plate (11) through a pre-installed ball hinge (5), the second test part (3) comprises a base (31), a right-angle wing (32) and a shaft roller (33) for connecting the base (31) and the right-angle wing (32), base (31) upper portion be provided with be used for with last notch (311) that beam barrel (33) are connected, right-angle wing (32) lower part be provided with be used for with lower notch (321) that beam barrel (33) are connected, the width of going up notch (311) and lower notch (321) is all not greater than the external diameter of beam barrel (33).
2. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: and the test frame (1) is also provided with a hanging wheel and a guy cable for hoisting the test piece (4).
3. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: the number of the reinforcing ribs (24) is at least one.
4. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: the right-angle wing (32) comprises a third plate (322) arranged above the lower notch (321) and a fourth plate (323) vertically arranged with the third plate (322), and the third plate (322) and the fourth plate (323) are connected with the upper end of the lower notch (321) through ribbed plates (324).
5. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: the base (31) is provided with a connecting bolt (312) for connecting the base (31) to the bottom plate (12).
6. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: the test rack (1) is also provided with a support frame (6) for supporting the test piece.
7. A mechanical measuring device for right-angle reinforced concrete members as claimed in claim 1, wherein: the heights of the upper notch (311) and the lower notch (321) are not less than 1/5 of the outer diameter of the shaft roller (33).
8. The use method of the mechanical measuring device for the right-angle reinforced concrete component as claimed in any one of claims 1 to 7, is characterized by comprising the following steps:
s1: mounting the first testing part on a testing machine actuating head on a top plate of the testing frame through a pre-installed spherical hinge;
s2: mounting a second testing part on the bottom plate of the test frame, and hoisting the test piece to the position where the lower end of the test piece is clamped to the right-angle wing;
s3: hoisting the test piece, and rotating the test piece around the right-angled wing at the lower end of the test piece until the angle between the test piece and the plane is 45 degrees;
s4: the testing machine moves the actuating head downwards to connect the first testing part with the top end of the testing piece, and finely adjusts the preassembled spherical hinge to clamp the top end of the testing piece between the first plate and the second plate;
s5: and loading pressure to the test piece by the actuating head of the testing machine to perform mechanical measurement.
9. The use method of the mechanical measuring device for the right-angle reinforced concrete member according to claim 8, is characterized in that:
and when the steps S2 and S3 are executed, hoisting the test piece through the hoisting wheel and the pull rope on the test frame.
10. The use method of the mechanical measuring device for the right-angle reinforced concrete member according to claim 8, is characterized in that:
when step S5 is executed, a slidable support frame is installed on the test rack, the testing machine moves the head to pre-load twice the weight of the test piece as a pre-load to the top end of the test piece, so that the test piece and the test rack form a stable two-force rod system, the support frame is removed, and the testing machine moves the head to continue to load pressure on the test piece for mechanical measurement.
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| CN202010512793.0A CN111829764A (en) | 2020-06-08 | 2020-06-08 | Mechanical measurement device for right-angle reinforced concrete member and use method |
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| CN202010512793.0A CN111829764A (en) | 2020-06-08 | 2020-06-08 | Mechanical measurement device for right-angle reinforced concrete member and use method |
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Application publication date: 20201027 |