CN210775046U - Loading device for bonding and drawing multi-bar planting bar - Google Patents
Loading device for bonding and drawing multi-bar planting bar Download PDFInfo
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- CN210775046U CN210775046U CN201921401297.7U CN201921401297U CN210775046U CN 210775046 U CN210775046 U CN 210775046U CN 201921401297 U CN201921401297 U CN 201921401297U CN 210775046 U CN210775046 U CN 210775046U
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Abstract
The utility model discloses a loading device is drawn in bonding of many muscle bar planting, including setting up the support on the concrete base member and installing the distribution girder steel on the support, its characterized in that: the steel bar planting device comprises a distribution steel beam, and is characterized in that an upper loading plate is arranged above the distribution steel beam, a lower loading plate is arranged below the distribution steel beam, the upper loading plate and the lower loading plate are fixedly connected through a plurality of pull rods, a hydraulic jack is mounted on the distribution steel beam, the ejection end of the hydraulic jack upwards supports the upper loading plate through a load sensor, a steel bar planting reinforcing bar nut is fixed at the drawing end of a steel bar planting reinforcement to be detected, connecting holes which are not less than the number of steel bar planting reinforcements to be detected are formed in the lower loading plate, and each steel bar planting reinforcement to be detected is connected with the lower loading plate through a connecting pull. The utility model discloses a many muscle bar planting bonding is drawn experimentally, can be applicable to the many muscle bar planting bonding of different bar planting quantity, different bar planting diameter, different bar planting interval and draw experimentally.
Description
Technical Field
The utility model belongs to the technical field of the experimental technique of building structure and specifically relates to a draw loading test's device to muscle bonding strength, especially a loading device is drawn in bonding of many muscle planting muscle.
Background
The bonding and drawing performance of the bar planting structure can be determined by drawing tests. In the prior art, an anchor rod drawing instrument is generally adopted to detect the anchoring force of anchoring bodies such as various anchor rods and reinforcing steel bars. The anchor rod drawing instrument generally comprises a manual pump, a hydraulic cylinder, a high-pressure oil pipe with a quick connector, an anchor and the like, wherein the hydraulic cylinder is of a hollow self-resetting type, when the anchor rod drawing instrument is used, the hydraulic cylinder is sleeved on a steel bar to be detected and fixed by the anchor, and the manual pump is used for driving pressurization to detect. For example, chinese utility model patent CN203337465U discloses a drawing test device for a reinforced concrete structure masonry infilled wall tie bar, which comprises a tension end anchorage installed at the outer end of the tested tie bar, a tension jack for tensioning the tested tie bar, a hydraulic oil tank connected with the tension jack, a tension oil pump for pumping hydraulic oil to the tension jack, a pressure detection unit for detecting the hydraulic oil pressure pumped to the tension jack by the tension oil pump, and a displacement detection unit for detecting the expansion amount of the tension jack; the tensioning jack is a straight-through jack which is arranged horizontally; the rear part of the straight-through jack is supported on the anchorage device at the tensioning end; the outside of reinforced concrete structure is provided with vertical support, and the vertical support outside is provided with the steel tie plate. The device has a simpler structure, can realize the bonded pull-out test of the embedded steel bar, but is only suitable for the bonded pull-out test of a single embedded steel bar.
When a multi-bar planting bonding drawing test needs to be carried out, a loading device needs to be developed. For example, the chinese patent application CN108593446A discloses a method for testing the cooperative stress of a multi-anchor fiber-reinforced anti-floating anchor system, which requires placing a load box at the junction between the floor and the bedrock to ensure that the load box axially pulls the rod body of the fiber-reinforced anchor, then pouring the load box into a whole, installing an embedded displacement sensor for testing, and performing 28 days of maintenance after installation and pouring, thus the testing period is long and the process is complex.
Therefore, it is necessary to research a general-purpose type multi-bar planting bonding drawing loading device.
Disclosure of Invention
The utility model aims at providing a many muscle bar planting bonding draws loading attachment to be applicable to the many muscle bar planting bonding of different bar planting quantity, different bar planting diameter, different bar planting interval and draw the experiment.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: the loading device comprises a support arranged on a concrete base body and a distribution steel beam arranged on the support, wherein an upper loading plate is arranged above the distribution steel beam, a lower loading plate is arranged below the distribution steel beam, the upper loading plate and the lower loading plate are fixedly connected through a plurality of pull rods, a hydraulic jack is arranged on the distribution steel beam, the ejection end of the hydraulic jack upwards supports the upper loading plate through a load sensor, a steel bar planting reinforcing nut is fixed at the drawing end of a steel bar planting reinforcement to be detected, connecting holes which are not less than the number of the steel bar planting reinforcements to be detected are formed in the lower loading plate, and each steel bar planting reinforcement to be detected is connected with the lower loading plate through the connecting pull rod and the corresponding connecting hole.
Among the above-mentioned technical scheme, load the upper load plate through hydraulic jack and load sensor, transmit the load to lower load plate through the pull rod of connecting the upper load plate, lower load plate transmits the pulling force to the bar planting reinforcing bar through connecting the pull rod again, realizes bonding and draws the test. When carrying out many muscle and drawing the experiment, should guarantee that the pulling force that every bar planting reinforcing bar receives equals or is close equal, for this reason, during the use, can paste the foil gage on the bar planting reinforcing bar, judge the pulling force that receives through strain property, the position of adjustment connecting rod for loading plate down is in order to adjust the pulling force that the bar planting reinforcing bar receives.
According to the preferable technical scheme, a plurality of replaceable lower loading plates are arranged, and connecting holes are formed in each lower loading plate corresponding to different bar planting layout modes.
In order to be suitable for different occasions, the lower loading plate is in one or more of the following layout modes:
(1) a connecting hole is formed in the center of the lower loading plate;
(2) 2 long connecting holes which are symmetrically arranged are arranged on one symmetrical axis of the lower loading plate;
(3) a circular connecting hole is formed in the center of the lower loading plate, 3 long connecting holes are radially arranged on the periphery of the circular connecting hole, and the central connecting lines of the 3 long connecting holes form a regular triangle;
(4) a circular connecting hole is formed in the center of the lower loading plate, 4 long connecting holes are radially arranged on the periphery of the circular connecting hole, and the connecting lines of the centers of the 4 long connecting holes form a square.
According to the preferable technical scheme, the pull rod is a prestressed threaded steel bar pull rod, the upper loading plate and the lower loading plate are square plates, 4 pull rods are arranged, and the pull rods are respectively connected with 4 corner positions of the upper loading plate and the lower loading plate.
In the above technical scheme, the upper loading plate is fixedly connected with the plurality of pull rods through a plurality of upper loading plate positioning nuts.
The lower loading plate is fixedly connected with the pull rods through a plurality of lower loading plate positioning nuts.
Preferably, the connecting pull rod is a prestressed threaded steel bar connecting pull rod.
In the above technical solution, the upper loading plate and the lower loading plate are arranged horizontally in parallel, and the pull rod is arranged vertically to the upper loading plate and the lower loading plate.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the utility model achieves stress self-balance by arranging the upper loading plate and the lower loading plate, and realizes the multi-bar planting bonding drawing test;
2. through with last loading plate as main drive load spare, can set up different connecting hole overall arrangement on loading plate down to it draws the experiment to be applicable in the bonding of the many muscle bar planting of different bar planting quantity, different bar planting diameter, different bar planting interval.
3. The utility model discloses can realize the experiment of different overall arrangement bar planting through changing down the load plate, processing is simple, convenient operation, practicality are strong.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
fig. 2 and 3 are schematic structural diagrams suitable for different bar planting layout occasions;
FIGS. 4-7 are schematic views of different lower load plates in an embodiment;
fig. 8 is a schematic structural view of the steel bar in the embodiment.
Wherein: 1. a pull rod; 2. an upper loading plate; 3. positioning nuts of the upper loading plate; 4. a load sensor; 5. a hydraulic jack; 6. distributing the steel beams; 7. a support; 8. a lower loading plate; 9. a lower loading plate positioning nut; 10. connecting a pull rod; 11. planting reinforcing steel bars; 12. planting reinforced steel bar nuts; 13. a concrete matrix.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the first embodiment is as follows: referring to the attached drawing 1, the loading device for bonding and drawing the multi-bar steel bar planting comprises a support 7 arranged on a concrete matrix 13 and a distribution steel beam 6 arranged on the support 7, wherein an upper loading plate 2 is arranged above the distribution steel beam 6, a lower loading plate 8 is arranged below the distribution steel beam 6, the upper loading plate 2 and the lower loading plate 8 are square plates and are fixedly connected at 4 corners by 4 prestressed threaded steel bar pull rods 1, the upper loading plate 2 is fixed with the pull rods 1 through a plurality of upper loading plate positioning nuts 3, and the lower loading plate 8 is fixed with the pull rods 1 through a plurality of lower loading plate positioning nuts 9.
The distribution steel beam 6 is provided with a hydraulic jack 5, the ejection end of the hydraulic jack 5 upwards supports the upper loading plate 2 through a load sensor 4, a steel bar planting reinforcing bar nut 12 (shown in figure 8) is fixed at the drawing end of a steel bar planting reinforcing bar 11 to be detected, the lower loading plate 8 is provided with a connecting hole, and each steel bar planting reinforcing bar 11 to be detected is connected with the lower loading plate 8 through a prestressed threaded steel bar connecting pull rod 10 and the corresponding connecting hole.
In this embodiment, a plurality of lower loading plates can be provided, and the lower loading plates can be replaced and used according to the layout condition of the corresponding embedded bars.
For example, the lower loading plate is one or more of the following layouts: (1) referring to fig. 4, a connecting hole is formed in the center of the lower loading plate, and is suitable for planting 1 bar; (2) referring to fig. 5, 2 long connecting holes are symmetrically arranged on a symmetry axis of the lower loading plate, and are suitable for 2 bars planted at different intervals; (3) referring to fig. 6, a circular connecting hole is formed in the center of the lower loading plate, 3 long connecting holes are radially arranged on the periphery of the circular connecting hole, and the connecting lines of the centers of the 3 long connecting holes form a regular triangle, so that the lower loading plate is suitable for planting 1, 3 or 4 bars at different intervals; (4) referring to fig. 7, a circular connecting hole is formed in the center of the lower loading plate, 4 elongated connecting holes are radially arranged on the periphery of the circular connecting hole, and the central connecting lines of the 4 elongated connecting holes form a square shape, so that the lower loading plate is suitable for planting 1, 4 or 5 bars at different intervals.
Fig. 2 and 3 are schematic structural diagrams of the steel bar planting test device suitable for a plurality of steel bar planting tests after different lower loading plates are replaced.
When the loading device is used for carrying out a multi-bar-planting bonding drawing test, the levelness of the upper loading plate and the levelness of the lower loading plate and the verticality of the loading device are ensured.
The nut is welded in advance at the drawing end of the steel bar planting reinforcement, and a welded nut tensile test is carried out, so that the welded nut is not damaged before the steel bar planting reinforcement is broken.
When a multi-bar drawing test is carried out, the tension borne by each bar-planting reinforcing bar is ensured to be equal or nearly equal. The strain of the strain gauge adhered to the steel bar planting reinforcement can be judged.
Claims (8)
1. The utility model provides a loading device is drawn in bonding of many muscle bar planting, includes the support of setting on the concrete base member and installs the distribution girder steel on the support, its characterized in that: the steel bar planting device comprises a distribution steel beam, and is characterized in that an upper loading plate is arranged above the distribution steel beam, a lower loading plate is arranged below the distribution steel beam, the upper loading plate and the lower loading plate are fixedly connected through a plurality of pull rods, a hydraulic jack is mounted on the distribution steel beam, the ejection end of the hydraulic jack upwards supports the upper loading plate through a load sensor, a steel bar planting reinforcing bar nut is fixed at the drawing end of a steel bar planting reinforcement to be detected, connecting holes which are not less than the number of steel bar planting reinforcements to be detected are formed in the lower loading plate, and each steel bar planting reinforcement to be detected is connected with the lower loading plate through a connecting pull.
2. The multi-bar planting bonding and drawing loading device according to claim 1, characterized in that: the lower loading plate is provided with a plurality of replaceable lower loading plates, and each lower loading plate is provided with connecting holes corresponding to different bar planting layout modes.
3. The multi-bar planting bonding and drawing loading device according to claim 2, characterized in that: the lower loading plate is one or more of the following layout modes: (1) a connecting hole is formed in the center of the lower loading plate; (2) 2 long connecting holes which are symmetrically arranged are arranged on one symmetrical axis of the lower loading plate; (3) a circular connecting hole is formed in the center of the lower loading plate, 3 long connecting holes are radially arranged on the periphery of the circular connecting hole, and the central connecting lines of the 3 long connecting holes form a regular triangle; (4) a circular connecting hole is formed in the center of the lower loading plate, 4 long connecting holes are radially arranged on the periphery of the circular connecting hole, and the connecting lines of the centers of the 4 long connecting holes form a square.
4. The multi-bar planting bonding and drawing loading device according to claim 1, characterized in that: the pull rod is a prestressed threaded steel bar pull rod, the upper loading plate and the lower loading plate are square plates, 4 pull rods are arranged, and the pull rods are respectively connected with 4 corner positions of the upper loading plate and the lower loading plate.
5. The multi-bar planting bonding and drawing loading device according to claim 4, characterized in that: the upper loading plate is fixedly connected with the pull rods through a plurality of upper loading plate positioning nuts.
6. The multi-bar planting bonding and drawing loading device according to claim 4, characterized in that: the lower loading plate is fixedly connected with the pull rods through a plurality of lower loading plate positioning nuts.
7. The multi-bar planting bonding and drawing loading device according to claim 1, characterized in that: the connecting pull rod is a prestressed threaded steel bar connecting pull rod.
8. The multi-bar planting bonding and drawing loading device according to claim 1, characterized in that: the upper loading plate and the lower loading plate are horizontally arranged in parallel, and the pull rod is vertically arranged with the upper loading plate and the lower loading plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921401297.7U CN210775046U (en) | 2019-08-23 | 2019-08-23 | Loading device for bonding and drawing multi-bar planting bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921401297.7U CN210775046U (en) | 2019-08-23 | 2019-08-23 | Loading device for bonding and drawing multi-bar planting bar |
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| Publication Number | Publication Date |
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| CN210775046U true CN210775046U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921401297.7U Active CN210775046U (en) | 2019-08-23 | 2019-08-23 | Loading device for bonding and drawing multi-bar planting bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525694A (en) * | 2020-12-01 | 2021-03-19 | 浙江瑞邦科特检测有限公司 | Nondestructive bar planting drawing test detection structure and method |
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2019
- 2019-08-23 CN CN201921401297.7U patent/CN210775046U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525694A (en) * | 2020-12-01 | 2021-03-19 | 浙江瑞邦科特检测有限公司 | Nondestructive bar planting drawing test detection structure and method |
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