CN107063896B - Adjustable pressure is cut integrated test system technical platform - Google Patents
Adjustable pressure is cut integrated test system technical platform Download PDFInfo
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- CN107063896B CN107063896B CN201710465682.7A CN201710465682A CN107063896B CN 107063896 B CN107063896 B CN 107063896B CN 201710465682 A CN201710465682 A CN 201710465682A CN 107063896 B CN107063896 B CN 107063896B
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N3/02—Details
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a technical platform of an adjustable pressure shear integrated test system, which comprises a steel ring beam, a pressure tester, a concrete foundation and a technical platform steel column, wherein the steel ring beam is a box-shaped beam, is arranged in a shape of a Chinese character 'Hui' in a plane, and is integrally arranged on the concrete foundation; the pressure testing machine is installed on the concrete foundation in the middle of the back-shaped, the technical platform steel column is installed on the upper end face of the steel ring beam, stable horizontal support is provided for the pressure testing machine, the technical platform steel column is provided with a horizontal loading device with adjustable height, the horizontal loading device comprises a cast steel beam, a loading oil cylinder and a shearing plate, the cast steel beam and the technical platform steel column form a stable sliding pair, the loading oil cylinder is fixedly installed on the cast steel beam, and the shearing plate is installed at the free extending end of the loading oil cylinder and is used for providing side load for a component to be tested on the pressure testing machine. The invention has stable structure, can automatically offset lateral force to form a self-balancing system, can adapt to the test requirements of components with various shapes, and has good expansibility.
Description
Technical Field
The invention belongs to the technical field of structural engineering, relates to a structural device for functionally expanding a pressure testing machine, and in particular relates to a technical platform of an adjustable pressure shearing integrated test system.
Background
The existing pressure testing machine can only provide vertical pressure for a test piece, cannot provide horizontal shearing force for the test piece, and cannot realize multi-angle load application of the test piece. And when a large-scale structural test piece such as a complex steel node and a cross beam is subjected to a composite loading test, the test piece is subjected to vertical pressure, and meanwhile horizontal shearing force or tensile and compressive loads with different angles are required to be applied to the test piece. These tests cannot be performed on the existing pressure testing machine, and a technical platform is required to be built to cooperate with the testing machine to perform the composite loading test.
Disclosure of Invention
The invention aims to provide a technical platform of a comprehensive pressure shear test system with strong expansibility, solve the problem of single function of the traditional pressure shear test platform, and provide a vertical load test platform capable of applying stable side load to a member to be tested. The pressure testing machine generally adopts a modularized structure, and the expandability of functions is considered at the beginning of design. The invention designs a set of horizontal loading system (shearing and friction), steel column, ring beam and installation foundation by matching with the main machine part of the pressure testing machine, and considers the composite loading test function of large-scale structural test pieces such as complex steel nodes, cross beams and the like and the convenience of the conversion of different test functions during the design.
In order to solve the technical problems, the invention adopts the following technical scheme:
an adjustable pressure is cut integrated test system technical platform, its characterized in that: the steel ring beam is a box-shaped beam, the plane arrangement is in a shape like a Chinese character 'Hui', and the steel ring beam is integrally arranged on the concrete foundation; the pressure testing machine is installed on the concrete foundation in the middle of the back font, technical platform steel column is installed at the up end of steel ring roof beam, provides stable horizontal support for the pressure testing machine, be equipped with highly adjustable horizontal loading device on the technical platform steel column, horizontal loading device includes cast steel crossbeam, loading hydro-cylinder and removable shear plate, cast steel crossbeam and technical platform steel column form stable sliding pair, and loading hydro-cylinder fixed mounting is on cast steel crossbeam, the shear plate is installed at loading hydro-cylinder free extension end for the component that awaits measuring provides side load on the pressure testing machine.
As improvement, the technical platform steel columns are two, the opposite sides of the two technical platform steel columns are respectively provided with a groove track, the two sides of the cast steel cross beam of the horizontal loading device are respectively provided with a linear rolling bearing capable of sliding in the groove tracks on the opposite sides of the two technical platform steel columns, and a load sensor is arranged between the free extending end of the loading oil cylinder and the shearing plate.
As an improvement, the upper pressing plate and the lower pressing plate of the pressure testing machine are respectively provided with two horizontal tie bars extending towards the technical platform steel column, one end of each horizontal tie bar, which is close to the technical platform steel column, is provided with an adjustable bolt, and the adjustable bolt can prop against the technical platform steel column to ensure that the upper pressing plate and the lower pressing plate do not laterally deviate.
As an improvement, concrete foundation includes horizontal segment ground and is located vertical section ground all around, adopt double-deck two-way arrangement of reinforcement before the horizontal segment ground is poured, be equipped with the pre-buried bolt of strengthening stable channel-section steel and installation pressure test machine in the horizontal segment ground, the channel-section steel links to each other with double-deck two-way arrangement of reinforcement welding, and pre-buried bolt welded fastening is in steel drum, steel drum welds respectively on channel-section steel and double-deck two-way arrangement of reinforcement, then pouring horizontal segment ground, vertical section ground is used for installing fixed steel ring roof beam, also adopts double-deck two-way arrangement of reinforcement before the vertical section ground pouring to dispose horizontal lacing wire, be equipped with the anchor reinforcing bar that links to each other with the steel ring roof beam in the vertical section ground.
As an improvement, the steel ring beam is a hollow beam, stiffening ribs are arranged in the steel ring beam, manholes for people to pass through are formed in the stiffening ribs, manholes for people to enter and exit are also formed in four corners of the steel ring beam, people can enter and exit the steel ring beam and walk in the steel ring beam, a plurality of evenly distributed fixing holes are formed in the steel ring beam, and the fixing holes are used for installing accessories required by the test.
As an improvement, a plurality of symmetrically distributed horizontal dowel bars are arranged between the periphery of the steel ring beam and the pressure testing machine, and the plurality of symmetrically distributed horizontal dowel bars are used for firmly fixing the pressure testing machine.
As an improvement, a movable cover plate which is convenient for observing and operating to protect the safety of personnel is arranged between the pressure testing machine and the tops of the peripheral steel ring beams.
As an improvement, a guide plate with a low friction coefficient is arranged on the side, in contact with the upper pressing plate and the lower pressing plate, of the technical platform steel column, and the guide plate is a polytetrafluoroethylene plate or a mirror surface stainless steel plate.
As an improvement, the technical platform steel column is provided with an electric lifter for driving the horizontal loading device to move up and down.
The beneficial effects of the invention are as follows:
the height adjusting device of the horizontal loading device is designed in the invention, so that the horizontal loading device can conveniently lift and guide while bearing horizontal load. The lifting height of the horizontal loading device can meet the requirements of a long beam column test piece compression-shear composite loading test and a cross beam test piece test. The anti-falling safety device ensures that the horizontal loading device does not fall down in the process of loading and unloading the test piece and testing. Various test accessories are also contained in the compression shear system to meet the requirements of different test projects.
The pressure testing machine, the horizontal loading device and the technical platform steel column form a self-balancing system in the design of the invention. In order to meet the requirement of a compression-shear composite loading test of a beam column test piece, in the test process, a pressure tester applies horizontal force to the beam column test piece and simultaneously generates reactive forces with equal magnitudes and opposite directions to a technical platform steel column. The reaction force exactly counteracts the horizontal force transferred to the upper pressing plate and the lower pressing plate by the test piece, and self-balancing is realized. In theory, the pressure testing machine and the technical platform steel column are not affected by horizontal load to generate bending deformation.
In the design of the invention, the steel ring beam and the concrete foundation are connected and fixed to the pressure testing machine. Considering that the pressure testing machine can be subjected to horizontal or vertical load when the cross beam test piece is subjected to the bending composite loading test, a connecting device is designed at the lower part of the pressure testing machine, and the pressure testing machine is fixed on a concrete foundation and a steel ring beam in a strengthening way through a horizontal dowel bar.
The device is mainly characterized in that:
1. the complex multidirectional force test, the beam column test piece compression-shear composite loading test, the cross beam test piece compression-bending composite loading test and the like can be carried out by matching with a pressure test machine;
2. the horizontal loading device is provided with a height adjusting device, is convenient to lift and guide, and is protected by an anti-falling safety device;
3. the pressure testing machine, the horizontal loading device and the technical platform steel column form a self-balancing system, and the main body of the pressure testing machine is not affected by horizontal load;
4. the steel ring beam and the concrete foundation are connected and fixed to the pressure testing machine so as to offset the possibility that the main machine of the testing machine is subjected to horizontal or vertical load.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of a pressure tester according to the present invention.
Fig. 3 is a top view of the overall structure of the present invention.
Fig. 4 is a front view of the horizontal loading device.
Fig. 5 is a top view of a horizontal loading device.
Fig. 6 is an elevation view of a technical platform steel column and steel ring beam.
Fig. 7 is a rear view of a technical platform steel column and steel ring beam.
Fig. 8 is a cross-sectional view A-A of fig. 6.
Fig. 9 is a sectional view of B-B in fig. 6.
Fig. 10 is a plan view of a steel ring beam.
Fig. 11 is a cross-sectional view of a concrete foundation.
FIG. 12 is a schematic view of a removable cover on a steel ring beam.
The steel ring beam comprises a 1-steel ring beam body, a 2-pressure testing machine, a 3-technical platform steel column, a 4-concrete foundation, a 5-horizontal loading device, a 6-cast steel cross beam, a 7-loading oil cylinder, an 8-shearing plate, a 9-linear rolling bearing, a 10-load sensor, an 11-connecting cylindrical pin, a 12-base, a 13-main loading oil cylinder, a 14-supporting rod, a 15-upper pressing plate, a 16-lower pressing plate, a 17-fixed seat, a 18-adjustable bolt, a 19-test piece, a 20-double-layer bidirectional reinforcement, a 21-cushion layer, a 22-embedded bolt, a 23-horizontal lacing wire, a 24-anchoring reinforcement, a 25-manhole, a 26-fixed hole, a 27-horizontal dowel bar, a 28-movable cover plate, a 29-channel steel, a 30-original pedestal and a 31-original reinforcing steel bar.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The technical platform comprises a steel ring beam 1, a pressure testing machine 2, a concrete foundation 4 and a technical platform steel column 3, wherein the steel ring beam 1 is a box-shaped beam, the steel ring beam 1 is arranged in a shape of a Chinese character 'Hui' in a plane, and the steel ring beam 1 is integrally arranged on the concrete foundation 4; the pressure testing machine 2 is installed on the concrete foundation 4 in the middle of the back font, technical platform steel column 3 is installed at the up end of steel ring roof beam 1, provides stable horizontal support for the pressure testing machine 2, be equipped with height-adjustable's horizontal loading device 5 on the technical platform steel column 3, horizontal loading device 5 includes cast steel crossbeam 6, loading hydro-cylinder 7 and removable shear plate 8, cast steel crossbeam 6 forms stable sliding pair in vertical direction with technical platform steel column 3, and the cylinder body fixed mounting of loading hydro-cylinder 7 is on cast steel crossbeam 6, shear plate 8 installs at loading hydro-cylinder 7's free extension for the test component provides the side load to await measuring on the pressure testing machine 2. The technical platform steel column 3 is provided with an electric lifter for driving the horizontal loading device 5 to move up and down, the electric lifter is arranged at the top of the technical platform steel column 3, and the height of the horizontal loading device 5 is accurately adjusted through the electric lifter.
The shearing plate 8 of the horizontal loading device 5 can be replaced by a plate type rubber support, a shearing plate for a basin type rubber support or a spherical rubber support, a friction plate and the like, a beam column test piece pressing-shearing composite loading test accessory and the like, and the function conversion of the tester is realized by replacing the accessory.
The two technical platform steel columns 3 are arranged, a groove track is respectively arranged on the opposite sides of the two technical platform steel columns 3, linear rolling bearings 9 capable of sliding in the groove tracks on the opposite sides of the two technical platform steel columns 3 are respectively arranged on the two sides of the cast steel cross beam 6 of the horizontal loading device 5, and a load sensor 10 is arranged between the free extending end of the loading oil cylinder 7 and the shearing plate 8.
The pressure testing machine 2 comprises a base 12, a main loading oil cylinder 13, four supporting rods 14, an upper pressing plate 15, a lower pressing plate 16 and a fixing seat 17 positioned at the top, wherein the upper end and the lower end of the four supporting rods 14 are respectively fixedly connected with the base 12 and the fixing seat 17 to form a fixing support of the pressure testing machine 2, the four supporting rods 14 are threaded rods, four corners of the upper pressing plate 15 are provided with four unthreaded holes sleeved on the supporting rods, nuts are respectively arranged on the supporting rods 14 below the unthreaded holes of the four corners of the upper pressing plate 15, the positions of the upper pressing plate 15 in the vertical direction of the supporting rods 14 can be adjusted by adjusting the nuts on the supporting rods 14 on the upper and lower sides of the upper pressing plate 15, the lower pressing plate 16 is installed on the four supporting rods 14 through linear bearings, and the main loading oil cylinder 13 is connected with the bottom of the lower pressing plate 16. The foundation 12 is mounted on the horizontal section foundation of the concrete foundation 4.
The upper pressing plate 15 and the lower pressing plate 16 of the pressure testing machine 2 are respectively provided with two horizontal tie bars extending towards the technical platform steel column 3, one end of each horizontal tie bar, close to the technical platform steel column 3, is provided with an adjustable bolt 18, and the adjustable bolts 18 can be abutted against the technical platform steel column to ensure that the upper pressing plate 15 and the lower pressing plate 16 do not laterally deviate. The rolling bearing is arranged at the position where the adjustable bolt 18 on the lower pressing plate 16 is in contact with the technical platform steel column 3, and the adjustable bolt 18 ensures that the upper pressing plate 15 and the lower pressing plate 16 can move up and down freely relative to the technical platform steel column 3 and simultaneously ensures that the upper pressing plate 15 and the lower pressing plate 16 do not deviate laterally during loading.
The concrete foundation 4 comprises a horizontal section foundation and a vertical section foundation positioned around, wherein a double-layer bidirectional reinforcement 20 is adopted before the horizontal section foundation is poured, a reinforced and stable channel steel 29 and an embedded bolt 22 for installing the pressure testing machine 2 are arranged in the horizontal section foundation, the channel steel 29 is welded and connected with the double-layer bidirectional reinforcement 20, the embedded bolt 22 is welded and fixed in a steel cylinder, the steel cylinder is welded on the channel steel 29 and the double-layer bidirectional reinforcement 20 respectively, then the horizontal section foundation is poured, the horizontal position of the embedded bolt 22 is properly adjusted to be aligned with a hole of the base 12 of the pressure testing machine 2 when the base 12 of the pressure testing machine 2 is hoisted, and the bolt is screwed by a nut. The steel cylinder is then slowly poured with fine mortar through the gap to fill the bottom and head spaces. The vertical section foundation is used for installing and fixing the steel ring beam 1, double-layer bidirectional reinforcement is adopted before casting of the vertical section foundation, horizontal lacing wires 23 are arranged in the vertical section foundation, and anchoring reinforcement 24 connected with the steel ring beam 1 is arranged in the vertical section foundation.
The steel ring beam 1 is a hollow beam, stiffening ribs are arranged in the steel ring beam 1, manholes for people to pass through are formed in the stiffening ribs, manholes 25 for people to enter and overhaul are also formed in four corners of the steel ring beam 1, a plurality of evenly distributed fixing holes 26 are formed in the steel ring beam 1, and the fixing holes 26 are used for installing the technical platform steel column 3 or other accessories of the pressure testing machine 2, so that various testing requirements can be met.
A plurality of symmetrically distributed horizontal dowel bars 27 are arranged between the periphery of the steel ring beam 1 and the pressure testing machine 2, and the plurality of symmetrically distributed horizontal dowel bars 27 are used for firmly fixing the pressure testing machine 2.
The movable cover plate 28 is arranged between the pressure testing machine 2 and the tops of the steel ring beams 1 around, and the movable cover plate 28 prevents personnel from falling into a foundation pit, protects personnel safety and facilitates the observation and operation of the personnel on test pieces. The movable cover plate 28 is made of patterned steel plates and is divided into a plurality of blocks, each block is matched with the steel ring beam 1 in size, and reinforcing ribs are welded on the back of each block. Each removable cover 28 may be independently secured between the steel ring beam 1 and the press 2. The movable cover 28 is fabricated by making brackets (including vertical struts and horizontal brackets) in the pit prior to fabrication. The support is firmly fixed on the horizontal section foundation of the concrete foundation 4 by using the bar planting glue and the expansion bolts, the movable cover plates 28 are fixed on the support by using screws, and each movable cover plate 28 is provided with two handles, so that the support can be independently disassembled, and the maintenance of the testing machine is facilitated.
The side of the technical platform steel column 3, which is contacted with the upper pressing plate 15 and the lower pressing plate 16, is provided with a guide plate with a low friction coefficient, and the guide plate is a polytetrafluoroethylene plate or a mirror surface stainless steel plate.
Claims (4)
1. An adjustable pressure is cut integrated test system technical platform, its characterized in that: the steel ring beam is a box-shaped beam, the plane arrangement is in a shape like a Chinese character 'Hui', and the steel ring beam is integrally arranged on the concrete foundation; the technical platform steel column is arranged on the upper end face of the steel ring beam to provide stable horizontal support for the pressure testing machine, the technical platform steel column is provided with a height-adjustable horizontal loading device, the horizontal loading device comprises a cast steel beam, a loading oil cylinder and a replaceable shear plate, the cast steel beam and the technical platform steel column form a stable sliding pair, the loading oil cylinder is fixedly arranged on the cast steel beam, and the shear plate is arranged at the free extending end of the loading oil cylinder and is used for providing side load for a member to be tested on the pressure testing machine;
the two technical platform steel columns are respectively provided with a groove track at the opposite sides of the two technical platform steel columns, the two sides of the cast steel cross beam of the horizontal loading device are respectively provided with a linear rolling bearing capable of sliding in the groove tracks at the opposite sides of the two technical platform steel columns, and a load sensor is arranged between the free extending end of the loading oil cylinder and the shearing plate;
the upper pressing plate and the lower pressing plate of the pressure testing machine are respectively provided with two horizontal tie bars extending towards the technical platform steel column, one end of each horizontal tie bar, which is close to the technical platform steel column, is provided with an adjustable bolt, and the adjustable bolt can prop against the technical platform steel column to ensure that the upper pressing plate and the lower pressing plate do not laterally deviate;
the concrete foundation comprises a horizontal section foundation and vertical section foundations positioned on the periphery, wherein double-layer bidirectional reinforcement is adopted before casting of the horizontal section foundation, a channel steel for strengthening stability and embedded bolts for installing a pressure testing machine are arranged in the horizontal section foundation, the channel steel is welded and connected with the double-layer bidirectional reinforcement, the embedded bolts are welded and fixed in a steel cylinder, the steel cylinder is respectively welded on the channel steel and the double-layer bidirectional reinforcement, then the horizontal section foundation is cast, the vertical section foundation is used for installing and fixing a steel ring beam, double-layer bidirectional reinforcement is also adopted before casting of the vertical section foundation, horizontal tie bars are configured, and anchor steel bars connected with the steel ring beam are arranged in the vertical section foundation;
a plurality of symmetrically distributed horizontal dowel bars are arranged between the periphery of the steel ring beam and the pressure testing machine, and are used for more firmly fixing the pressure testing machine;
and one side of the technical platform steel column, which is in contact with the upper pressing plate and the lower pressing plate, is provided with a guide plate with a low friction coefficient, and the guide plate is a polytetrafluoroethylene plate or a mirror surface stainless steel plate.
2. The adjustable compression shear integrated test system technical platform of claim 1, wherein: the steel ring beam is a hollow beam, stiffening ribs are arranged in the steel ring beam, manholes for people to pass through are formed in the stiffening ribs, manholes for people to enter and exit are also formed in four corners of the steel ring beam, people can enter and exit the steel ring beam and walk inside the steel ring beam, a plurality of evenly distributed fixing holes are formed in the steel ring beam, and the fixing holes are used for installing accessories required by the test.
3. The adjustable compression shear integrated test system technical platform of claim 1, wherein: a movable cover plate which is convenient for observation and operation and protects the safety of personnel is arranged between the pressure testing machine and the tops of the steel ring beams around.
4. The adjustable compression shear integrated test system technical platform of claim 1, wherein: the technical platform steel column is provided with an electric lifter for driving the horizontal loading device to move up and down.
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| CN201710465682.7A CN107063896B (en) | 2017-06-19 | 2017-06-19 | Adjustable pressure is cut integrated test system technical platform |
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| CN201710465682.7A CN107063896B (en) | 2017-06-19 | 2017-06-19 | Adjustable pressure is cut integrated test system technical platform |
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| CN107063896B true CN107063896B (en) | 2023-06-06 |
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| CN109520866B (en) * | 2019-01-25 | 2023-12-12 | 河南交通职业技术学院 | Pressure shear test device |
| CN110308049A (en) * | 2019-07-18 | 2019-10-08 | 天水红山试验机有限公司 | Multidimensional loads comprehensive test system |
| CN112213211B (en) * | 2020-10-26 | 2024-02-13 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Self-balancing structure for medium-high pressure explosion load generator |
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