CN111721631A - Device and method for testing ultimate bearing capacity of concrete filled steel tube axial compression short column - Google Patents
Device and method for testing ultimate bearing capacity of concrete filled steel tube axial compression short column Download PDFInfo
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- CN111721631A CN111721631A CN202010394152.XA CN202010394152A CN111721631A CN 111721631 A CN111721631 A CN 111721631A CN 202010394152 A CN202010394152 A CN 202010394152A CN 111721631 A CN111721631 A CN 111721631A
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- 239000004567 concrete Substances 0.000 title claims abstract description 104
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000006835 compression Effects 0.000 title claims abstract description 16
- 238000007906 compression Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 238000004080 punching Methods 0.000 claims abstract description 52
- 238000003825 pressing Methods 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 22
- 238000009434 installation Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004584 weight gain Effects 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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Abstract
The invention relates to the field of bearing capacity test of concrete filled steel tube, in particular to a device and a method for testing the ultimate bearing capacity of a concrete filled steel tube axial compression short column, which comprises a rotating seat, a height adjusting frame, a punching mechanism, a plurality of clamping mechanisms and a pressing mechanism, wherein the height adjusting frame is fixedly arranged at the top of the rotating seat, the plurality of clamping mechanisms are fixedly arranged at the top of the rotating seat, the plurality of pressing mechanisms are arranged on the height adjusting frame, the device for testing the ultimate bearing capacity of the concrete filled steel tube axial compression short column clamps concrete with different diameters through the clamping mechanisms, carries out long-time ultimate bearing capacity test on the concrete filled steel tube through the pressing mechanism, carries out the ultimate bearing capacity test on the concrete filled steel tube through the punching mechanism by short strong force, further ensures that the concrete filled steel tube is not easy to shake in the test process, and avoids influencing the measured data, the equipment is convenient to transport for building site often is convenient for test.
Description
Technical Field
The invention relates to the field of bearing capacity test of concrete filled steel tubes, in particular to equipment and a method for testing the ultimate bearing capacity of a concrete filled steel tube axial compression short column.
Background
Concrete filled steel tubes are made by pouring concrete into steel tubes and tamping the concrete to increase the strength and rigidity of the steel tubes. Generally, the concrete filled steel tube with the concrete strength grade below C50 is called ordinary concrete filled steel tube; the steel tube concrete with the concrete strength grade above C50 is called steel tube high-strength concrete; the steel tube concrete with the concrete strength grade of above C100 is called steel tube ultrahigh-strength concrete. When conventional steel pipe concrete's ultimate bearing capacity is measured, do not have dedicated equipment to fix steel pipe concrete for steel pipe concrete takes place to rock easily in long-time test procedure, influences measured data, and when carrying out the punching press test to steel pipe concrete, often need place steel pipe concrete and test on the punching machine, and the punching machine is not convenient for transport, and building site often consequently is difficult to test.
Disclosure of Invention
The invention aims to provide equipment and a method for testing the ultimate bearing capacity of a concrete filled steel tube axial compression short column.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a test steel pipe concrete axle presses short column limit bearing capacity equipment, including the roating seat, the altitude mixture control frame, punching press mechanism, a plurality of clamping mechanism and pushing down the mechanism, roating seat fixed mounting is on table surface, altitude mixture control frame fixed mounting is at the top of roating seat, the equal fixed mounting of a plurality of clamping mechanism is at the top of roating seat, and a plurality of clamping mechanism is along the axis direction evenly distributed of roating seat, a plurality of pushes down the mechanism and all installs on the altitude mixture control frame, a plurality of pushes down mechanism and a plurality of clamping mechanism one-to-one, and every pushes down the mechanism and all is located every clamping mechanism directly over, a plurality of pushes down the mechanism and all is in altitude mixture control frame sliding connection, punching press mechanism can gliding the installation on the altitude mixture control frame.
Further, the rotating seat comprises a rotating plate, a rotating seat, a rotating shaft, a nut, a gasket, a conical roller bearing and two mounting plates, wherein the two mounting plates are fixedly mounted at the bottom of the outer edge of the rotating seat, the two mounting plates are fixedly connected with the working table surface, the rotating plate is positioned right above the rotating seat, the rotating shaft is positioned below the rotating plate, the top end of the rotating shaft is fixedly connected with the bottom of the rotating plate, the bottom of the rotating seat is provided with an upward concave hole, the bottom of the rotating shaft penetrates through the top of the concave hole, a rotating hole for the rotating shaft to penetrate through is formed in the rotating seat, the diameter of the rotating hole is equal to that of the rotating shaft, the conical roller bearing is sleeved on the outer edge of the rotating shaft, the top of the conical roller bearing is abutted against the bottom of the rotating plate, the bottom of the conical roller bearing is abutted against the rotating seat, an external thread is formed in the outer edge of, and the top of nut is contradicted with the bottom of gasket, and the equal fixed mounting of a plurality of clamping mechanism is at the top of changeing the board, and a plurality of clamping mechanism along the axis direction evenly distributed who changes the board.
Further, clamping mechanism includes two tight arms of clamp, two tight arms of clamp are mutual symmetry setting, every presss from both sides tight arm and all includes the rubber pad, the arc connecting plate, the connecting axle, the spring of contradicting, baffle and bolt, rubber pad fixed mounting is on the inner edge of arc connecting plate, one side fixed mounting of connecting axle is in the outer fringe of arc connecting plate, the bottom of arc connecting plate and the top laminating of changeing the board, baffle fixed mounting is at the top of changeing the board, and the opposite side of connecting axle passes the baffle, the spring housing of contradicting is established in the outer fringe of connecting axle, and the one end of baffle is contradicted with the outer fringe of arc connecting plate, the other end of baffle is contradicted with one side of baffle, it inserts in the perforation of establishing at the connecting axle to.
Further, the height adjusting frame comprises a screw, a spiral ring, a handle, an adjusting plate and two guide pillars, the two guide pillars are vertically and fixedly installed at the top of the rotating plate, the tops of the two guide pillars penetrate through the adjusting plate and are in sliding connection with the adjusting plate, the spiral ring is fixedly installed at the top of the adjusting plate, the bottom of the screw penetrates through the adjusting plate, the screw is meshed with the spiral ring, and the handle is fixedly installed at the top of the screw.
Further, every mechanism of pushing down all includes annular connecting plate, a pressing plate, the go-between, a plurality of increases pouring weight and four arc blend stops, the equal fixed mounting of four arc blend stops is at the top of annular connecting plate, and four arc blend stops coaxial line settings, the slide opening has been seted up on the regulating plate, the inner edge of slide opening and the outer fringe laminating of four arc blend stops, clamp plate fixed mounting is in the bottom of annular connecting plate, go-between fixed mounting is at the top of four arc blend stops, and the go-between can dismantle with the regulating plate and be connected, a plurality of increases the pouring weight and all places in four arc blend stops.
Further, be provided with two cowl on the outer fringe of go-between, two cowl are mutual symmetry setting along the central longitudinal section of go-between, and cowl's bottom is contradicted with the top of regulating plate, and sets up two arc perforation that supply two cowl to pass on the regulating plate.
Further, punching press mechanism includes biax cylinder, connecting plate, slide, annular slide mechanism, clamp plate and punching press post, and annular slide mechanism fixed mounting is at the top of regulating plate, and the slide installs at annular slide mechanism's top, and the connecting plate is vertical the top of installing at the slide, and biax cylinder fixed mounting is on the connecting plate, and clamp plate fixed mounting is on biax cylinder's output for carry out the punching press post fixed mounting that punches to pushing down the mechanism in the bottom of clamp plate.
Further, annular slide mechanism includes annular slide, arc slider and annular clamp plate, annular slide fixed mounting is at the top of regulating plate, arc slider can gliding be located annular slide, and arc slider's outer fringe and annular slide's inner edge laminating, arc slider's top and the bottom fixed connection of slide, the top of annular clamp plate bottom is contradicted with the top of slide, annular clamp plate passes through a plurality of fixed plate fixed mounting on the regulating plate, the top of fixed plate and annular clamp plate's bottom fixed connection, the bottom of fixed plate and the top fixed connection of regulating plate, annular clamp plate passes through screw and slide fixed connection, a plurality of is perforated on the screw, a plurality of is perforated and a plurality of clamping mechanism one-to-one, set up the screw hole that supplies the screw connection on the slide.
A method for testing the ultimate bearing capacity of a steel tube concrete axial compression short column is characterized in that,
s1: mounting concrete-filled steel tubes with different diameters;
the swivel base is installed on the workbench through a worker, the worker grasps one steel pipe concrete, the steel pipe concrete is plugged between two rubber pads, the arc-shaped connecting plate is pushed by the conflict spring through the elastic action of the conflict spring, the two rubber pads clamp the steel pipe concrete, the rotating plate is manually rotated by the worker, the clamping mechanism at the next position is rotated to the front of the worker, the other steel pipe concrete is installed, the process is repeated, all the steel pipe concrete is installed, and the installation of the steel pipe concrete with different diameters is completed;
s2: applying pressure;
the weight increasing blocks are placed among the four arc-shaped retaining strips through a worker, the handle is rotated through the worker, the handle drives the screw rod to rotate, the screw rod is meshed with the spiral ring, the adjusting plate moves downwards along the two guide pillars, the adjusting plate drives the pressing mechanism to descend, the pressing plate is enabled to abut against the top of the concrete-filled steel tube, and then pressure is applied to the concrete-filled steel tube;
s3: performing short-term strong stamping;
promote the biax cylinder through the workman, and then make the slide drive the arc slider and rotate along annular slide, press the slide between annular clamp plate and arc slider through annular clamp plate, when the punching press post rotates directly over the steel pipe concrete that needs carry out the punching press, through passing the perforation that corresponds with the screw, be connected the screw hole meshing of screw and slide again, the rethread starts the biax cylinder, and then make the biax cylinder drive the clamp plate and push down, and then make the clamp plate drive the punching press post and push down, and then make the punching press post carry out the punching press to pushing down the mechanism, transmit stamping force through pushing down the mechanism, and then make pushing down the mechanism and carry out the punching press to steel pipe concrete's top, and then judge the limit bearing capacity that meets short-time powerful punching press.
The invention has the beneficial effects that: this test steel pipe concrete axle presses short column limit bearing capacity equipment presss from both sides tightly the steel pipe concrete of different diameters through clamping mechanism, and carry out long-time limit bearing capacity test to the steel pipe concrete through pushing down the mechanism, the limit bearing capacity test of short period powerful punching press is carried out to the steel pipe concrete through punching press mechanism, and then make difficult the emergence rocking in the testing process, avoided influencing measured data, this equipment is convenient for transport for building site often is convenient for test.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a first exploded perspective view of the rotary base;
FIG. 3 is a second exploded perspective view of the rotary base;
FIG. 4 is a schematic partial perspective view of the rotary base;
FIG. 5 is a perspective view of the clamping mechanism;
FIG. 6 is a perspective view of the height adjustment bracket;
FIG. 7 is a perspective view of the pressing mechanism;
FIG. 8 is a first exploded perspective view of the stamping mechanism;
FIG. 9 is a second exploded perspective view of the stamping mechanism;
in the figure:
1. a rotating base; 1a, rotating a plate; 1b, transposition; 1b1, a concave hole; 1c, a rotating shaft; 1d, a nut; 1e, a gasket; 1h, conical rod bearings; 1i, mounting a plate;
2. a clamping mechanism; 2a, a rubber pad; 2b, arc-shaped connecting plates; 2c, a connecting shaft; 2d, abutting against the spring; 2e, a baffle plate; 2h, inserting a pin;
3. a height adjusting bracket; 3a, a screw rod; 3b, a spiro ring; 3c, a guide post; 3d, adjusting plates; 3e, a handle; 3f, arc perforation; 3h, sliding holes;
4. a pressing mechanism; 4a, arc-shaped barrier strips; 4b, an annular connecting plate; 4c, pressing a plate; 4d, connecting rings; 4e, weight increasing block; 4f, arc-shaped baffles;
5. a stamping mechanism; 5a, a double-shaft cylinder; 5b, a connecting plate; 5c, a sliding plate; 5d, an annular sliding mechanism; 5d1, annular slide; 5d2, arc slider; 5d3, annular pressure plate; 5d4, fixing plate; 5d5, screws; 5e, pressing a plate; 5f, punching the column;
6. and (5) concrete filled steel tube.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 9, a test steel pipe concrete axle presses short column limit bearing capacity equipment, including roating seat 1, height adjusting bracket 3, punching press mechanism 5, a plurality of clamping mechanism 2 and pushing down mechanism 4, roating seat 1 fixed mounting is on table surface, height adjusting bracket 3 fixed mounting is at the top of roating seat 1, the equal fixed mounting of a plurality of clamping mechanism 2 is at the top of roating seat 1, and a plurality of clamping mechanism 2 is along the axis direction evenly distributed of roating seat 1, a plurality of pushes down mechanism 4 and all installs on height adjusting bracket 3, a plurality of pushes down mechanism 4 and a plurality of clamping mechanism 2 one-to-one, and every pushes down mechanism 4 and all is located every clamping mechanism 2 directly over, a plurality of pushes down mechanism 4 and all is in height adjusting bracket 3 sliding connection, punching press mechanism 5 can be gliding the installation on height adjusting bracket 3.
The rotary seat 1 comprises a rotary plate 1a, a rotary seat 1b, a rotary shaft 1c, a nut 1d, a gasket 1e, a conical roller bearing 1h and two mounting plates 1i, wherein the two mounting plates 1i are fixedly mounted at the bottom of the outer edge of the rotary seat 1b, the two mounting plates 1i are fixedly connected with a working table surface, the rotary plate 1a is positioned right above the rotary seat 1b, the rotary shaft 1c is positioned below the rotary plate 1a, the top end of the rotary shaft 1c is fixedly connected with the bottom of the rotary plate 1a, the bottom of the rotary seat 1b is provided with an upward concave hole 1b1, the bottom of the rotary shaft 1c penetrates through the top of the concave hole 1b1, a rotary hole for the rotary shaft 1c to penetrate through is formed in the rotary seat 1b, the diameter of the rotary hole is equal to that of the rotary shaft 1c, the conical roller bearing 1h is sleeved on the outer edge of the rotary shaft 1c, the top of the conical roller bearing 1h is abutted against the bottom of the rotary seat, the outer screw thread has been seted up on the bottom outer fringe of pivot 1c, and gasket 1e cover is established on pivot 1c, and gasket 1 e's top is contradicted with swivel mount 1b, and nut 1d meshing is on pivot 1 c's outer screw thread, and nut 1 d's top is contradicted with gasket 1 e's bottom, and the equal fixed mounting of a plurality of clamping mechanism 2 is at the top of changeing board 1a, and a plurality of clamping mechanism 2 along changeing board 1 a's axis direction evenly distributed. When a plurality of clamping mechanism 2 need be rotated, change board 1a through the manual rotation of workman, and then make change board 1a drive pivot 1c and rotate, rethread pivot 1c rotates on swivel mount 1b, reduces the frictional force when changeing board 1a and rotating through conical rod bearing 1h, through gasket 1e and nut 1d, prevents that pivot 1c from breaking away from swivel mount 1 b.
The clamping mechanism 2 comprises two clamping arms which are symmetrically arranged, each clamping arm comprises a rubber pad 2a, an arc-shaped connecting plate 2b, a connecting shaft 2c, a resisting spring 2d, a baffle plate 2e and a bolt 2h, the rubber pads 2a are fixedly arranged on the inner edge of the arc-shaped connecting plates 2b, one side of the connecting shaft 2c is fixedly arranged on the outer edge of the arc-shaped connecting plates 2b, the bottom of the arc-shaped connecting plates 2b is attached to the top of the rotating plate 1a, the baffle plate 2e is fixedly arranged on the top of the rotating plate 1a, the other side of the connecting shaft 2c penetrates through the baffle plate 2e, the resisting springs 2d are sleeved on the outer edge of the connecting shaft 2c, one end of the baffle plate 2e is contacted with the outer edge of the arc-shaped connecting plates 2b, the other end of the baffle plate 2e is contacted with one side of the baffle plate 2e, the, the latch 2h abuts against the other side of the baffle 2 e. When the workman need install steel pipe concrete 6 on clamping mechanism 2, grasp steel pipe concrete 6 through the workman, fill in steel pipe concrete 6 between two rubber pads 2a, through conflict spring 2 d's elastic force effect, and then make conflict spring 2d promote arc connecting plate 2b, make two rubber pads 2a press from both sides tightly steel pipe concrete 6, through rubber pad 2 a's effect, and then make clamping mechanism 2 can closely press from both sides tightly the steel pipe concrete 6 of different diameters.
The height adjusting frame 3 comprises a screw rod 3a, a spiral ring 3b, a handle 3e, an adjusting plate 3d and two guide columns 3c, the two guide columns 3c are vertically and fixedly mounted at the top of the rotating plate 1a, the tops of the two guide columns 3c penetrate through the adjusting plate 3d and are in sliding connection with the adjusting plate 3d, the spiral ring 3b is fixedly mounted at the top of the adjusting plate 3d, the bottom of the screw rod 3a penetrates through the adjusting plate 3d, the screw rod 3a is meshed with the spiral ring 3b, and the handle 3e is fixedly mounted at the top of the screw rod 3 a. Handle 3e is rotated through the workman, and then makes handle 3e drive screw rod 3a and rotate, and then makes screw rod 3a and spiral ring 3b mesh, and then makes regulating plate 3d carry out upward movement or downstream along two guide pillars 3 c.
Every mechanism 4 that pushes down all includes annular connecting plate 4b, clamp plate 4c, go-between 4d, a plurality of weight gain piece 4e and four arc blend stops 4a, the equal fixed mounting in annular connecting plate 4 b's of four arc blend stops 4a top, and four arc blend stops 4a coaxial line set up, the slide opening 3h has been seted up on regulating plate 3d, the inner edge of slide opening 3h and the outer fringe laminating of four arc blend stops 4a, clamp plate 4c fixed mounting is in annular connecting plate 4 b's bottom, go-between 4d fixed mounting is at four arc blend stops 4 a's top, and go-between 4d can dismantle with regulating plate 3d and be connected, a plurality of weight gain piece 4e all places in four arc blend stops 4 a. Place a plurality of weight gain piece 4e between four arc blend stops 4a through the workman, and then increase weight, and then how much pressure need be born at 6 tops of steel pipe concrete when simulating out the housing construction, the rethread workman uses altitude mixture control frame 3, and then makes altitude mixture control frame 3 drive down mechanism 4 and descend, and then makes clamp plate 4c contact the top of steel pipe concrete 6, and then exerts pressure to steel pipe concrete 6.
Be provided with two cowl 4f on the outer fringe of go-between 4d, two cowl 4f are mutual symmetry setting along the central longitudinal section of go-between 4d, and cowl 4 f's bottom is contradicted with regulating plate 3 d's top, and sets up two arc perforation 3f that supply two cowl 4f to pass on the regulating plate 3 d. Because the diameter of clamp plate 4c is greater than the biggest outer fringe diameter of four arc blend stops 4a, if want to take out the weight piece 4e that increases a plurality of in four arc blend stops 4a, can not be through the mode of upwards pulling out, rotate go-between 4d through the workman, and then make go-between 4d drive cowl 4f wear out from arc perforation 3f, and then make pushing down mechanism 4 and regulating plate 3d separate, when needs, will push down mechanism 4 again and install on regulating plate 3 d.
The annular sliding mechanism 5d comprises an annular slide way 5d1, an arc-shaped slide block 5d2 and an annular pressure plate 5d3, the annular slide way 5d1 is fixedly mounted at the top of the adjusting plate 3d, the arc-shaped slide block 5d2 is slidably positioned in the annular slide way 5d1, the outer edge of the arc-shaped slide block 5d2 is attached to the inner edge of the annular slide way 5d1, the top of the arc-shaped slide block 5d2 is fixedly connected with the bottom of the sliding plate 5c, the bottom of the annular pressure plate 5d3 is abutted to the top of the sliding plate 5c, the annular pressure plate 5d3 is fixedly mounted on the adjusting plate 3d through a plurality of fixing plates 5d4, the top of the fixing plate 5d4 is fixedly connected with the bottom of the annular pressure plate 5d3, the bottom of the fixing plate 5d4 is fixedly connected with the top of the adjusting plate 3d, the annular pressure plate 5d3 is fixedly connected with the sliding plate 5c through a plurality of screws 5d, the slide plate 5c is provided with a screw hole for connecting the screw 5d 5. Promote biax cylinder 5a through the workman, and then make slide 5c drive arc slider 5d2 rotate along annular slide 5d1, press slide 5c between annular clamp plate 5d3 and arc slider 5d2 through annular clamp plate 5d3, when punching press post 5f rotates directly over the steel pipe concrete 6 that needs carry out the punching press, through passing corresponding perforation with screw 5d5, again with screw 5d5 and slide 5 c's screw hole meshing connection, and then accomplish the position control of punching press post 5 f.
A method for testing the ultimate bearing capacity of a steel tube concrete axial compression short column is characterized in that,
s1: mounting concrete-filled steel tubes with different diameters;
the swivel mount 1b is mounted on a workbench through a worker, the worker grasps one steel pipe concrete 6, the steel pipe concrete 6 is plugged between two rubber pads 2a, the steel pipe concrete 6 is clamped by the two rubber pads 2a through the elastic force of the abutting springs 2d, the abutting springs 2d push the arc-shaped connecting plate 2b, the rotating plate 1a is manually rotated by the worker, the clamping mechanism 2 at the next position is rotated to the front of the worker, the other steel pipe concrete 6 is mounted, the process is repeated, all the steel pipe concrete 6 are mounted, and the mounting of the steel pipe concrete with different diameters is completed;
s2: applying pressure;
a plurality of weight increasing blocks 4e are placed among the four arc-shaped retaining strips 4a through a worker, the handle 3e is rotated through the worker, the handle 3e drives the screw rod 3a to rotate, the screw rod 3a is meshed with the spiral ring 3b, the adjusting plate 3d moves downwards along the two guide pillars 3c, the adjusting plate 3d drives the pressing mechanism 4 to descend, the pressing plate 4c is enabled to abut against the top of the concrete-filled steel tube 6, and then the pressure application of the concrete-filled steel tube 6 is completed;
s3: performing short-term strong stamping;
by the worker pushing the double-shaft cylinder 5a, the sliding plate 5c drives the arc-shaped sliding block 5d2 to rotate along the annular slide way 5d1, the slide 5c is pressed between the annular pressure plate 5d3 and the arc-shaped slide 5d2 by the annular pressure plate 5d3, when the punching column 5f rotates to a position right above the steel pipe concrete 6 to be punched, the screw 5d5 penetrates through the corresponding through hole, the screw 5d5 is meshed and connected with the threaded hole of the sliding plate 5c, and then the double-shaft air cylinder 5a is started, so that the double-shaft cylinder 5a drives the pressing plate 5e to press down, and further the pressing plate 5e drives the stamping column 5f to press down, further, the pressing column 5f presses the pressing mechanism 4, the pressing force is transmitted by the pressing mechanism 4, and then the pressing mechanism 4 is used for punching the top of the concrete filled steel tube 6, and the limit bearing capacity of short strong punching is judged.
The working principle is as follows: when a worker needs to test the ultimate bearing capacity of the concrete-filled steel tubes 6 with different diameters for a long time, firstly, the worker installs the swivel mount 1b on the workbench, the worker grasps one concrete-filled steel tube 6, inserts the concrete-filled steel tube 6 between the two rubber pads 2a, and pushes the arc-shaped connecting plate 2b by the abutting spring 2d under the elastic force of the abutting spring 2d, so that the two rubber pads 2a clamp the concrete-filled steel tube 6, then, the worker manually rotates the swivel plate 1a, so that the clamping mechanism 2 at the next position rotates to the front of the worker, then, another concrete-filled steel tube 6 is installed, the process is repeated, all the concrete-filled steel tubes 6 are installed, then, the installation of the concrete-filled steel tubes with different diameters is completed, then, the worker places a plurality of weight increasing blocks 4e between the four arc-shaped barrier strips 4a, the handle 3e is rotated by a worker, the handle 3e drives the screw rod 3a to rotate, the screw rod 3a is meshed with the spiral ring 3b, the adjusting plate 3d moves downwards along the two guide posts 3c, the adjusting plate 3d drives the pressing mechanism 4 to descend, the pressing plate 4c is enabled to collide with the top of the concrete-filled steel tube 6, the concrete-filled steel tube 6 is pressurized, the shape change of the concrete-filled steel tube 6 is observed after a certain period of time, the limit bearing capacity of a long time is deduced, when the top of the concrete-filled steel tube 6 needs to be subjected to short strong stamping, the double-shaft air cylinder 5a is pushed by the worker, the sliding plate 5c drives the arc-shaped sliding block 5d2 to rotate along the annular sliding way 5d1, the sliding plate 5c is pressed between the annular pressing plate 5d3 and the arc-shaped sliding block 5d2 through the annular pressing plate 5d3, when punching press post 5f rotates to need carry out the steel pipe concrete 6 of punching press directly over, through passing the perforation that corresponds with screw 5d5, be connected screw 5d5 and slide 5 c's screw hole meshing again, the rethread starts biax cylinder 5a, and then make biax cylinder 5a drive clamp plate 5e push down, and then make clamp plate 5e drive punching press post 5f and push down, and then make punching press post 5f carry out the punching press to pushing down mechanism 4, transmit stamping force through pushing down mechanism 4, and then make pushing down mechanism 4 carry out the punching press to steel pipe concrete 6's top, and then judge the limit bearing capacity that meets short powerful punching press.
Claims (9)
1. A device for testing the limit bearing capacity of a steel pipe concrete axial compression short column is characterized by comprising a rotating seat (1), a height adjusting frame (3), a stamping mechanism (5), a plurality of clamping mechanisms (2) and a pressing mechanism (4), wherein the rotating seat (1) is fixedly arranged on a working table surface, the height adjusting frame (3) is fixedly arranged at the top of the rotating seat (1), the clamping mechanisms (2) are uniformly distributed along the axial direction of the rotating seat (1), the pressing mechanisms (4) are arranged on the height adjusting frame (3), the pressing mechanisms (4) correspond to the clamping mechanisms (2) one by one, each pressing mechanism (4) is positioned right above each clamping mechanism (2), and the pressing mechanisms (4) are in sliding connection with the height adjusting frame (3), the punching mechanism (5) can be slidably arranged on the height adjusting frame (3).
2. The apparatus for testing the ultimate bearing capacity of a steel pipe concrete axial compression short column as claimed in claim 1, wherein the rotary base (1) comprises a rotary plate (1a), a rotary seat (1b), a rotary shaft (1c), a nut (1d), a gasket (1e), a conical roller bearing (1h) and two mounting plates (1i), the two mounting plates (1i) are fixedly mounted at the bottom of the periphery of the rotary seat (1b), the two mounting plates (1i) are fixedly connected with the working table, the rotary plate (1a) is positioned right above the rotary seat (1b), the rotary shaft (1c) is positioned below the rotary plate (1a), the top end of the rotary shaft (1c) is fixedly connected with the bottom of the rotary plate (1a), the bottom of the rotary seat (1b) is provided with an upwardly concave recess (1b1), the bottom of the rotary shaft (1c) passes through the top of the recess (1b1), and the rotary seat (1b) is provided with a rotary hole for the rotary shaft (1c) to pass through, the diameter of commentaries on classics hole equals the diameter of pivot (1c), circular cone rod bearing (1h) cover is established on the outer fringe of pivot (1c), and the top of circular cone rod bearing (1h) is contradicted with the bottom of commentaries on classics board (1a), the bottom of circular cone rod bearing (1h) is contradicted with swivel mount (1b), the external screw thread has been seted up on the bottom outer fringe of pivot (1c), gasket (1e) cover is established on pivot (1c), and the top of gasket (1e) is contradicted with swivel mount (1b), nut (1d) meshing is on the external screw thread of pivot (1c), and the top of nut (1d) is contradicted with the bottom of gasket (1e), the equal fixed mounting of a plurality of clamping mechanism (2) is at the top of commentaries on classics board (1a), and a plurality of clamping mechanism (2) are along the axis direction evenly distributed of commentaries on classics board (1 a).
3. The device for testing the ultimate bearing capacity of the steel pipe concrete axial compression short column as claimed in claim 2, wherein the clamping mechanism (2) comprises two clamping arms which are symmetrically arranged with each other, each clamping arm comprises a rubber pad (2a), an arc-shaped connecting plate (2b), a connecting shaft (2c), an abutting spring (2d), a baffle (2e) and a bolt (2h), the rubber pads (2a) are fixedly arranged on the inner edge of the arc-shaped connecting plate (2b), one side of the connecting shaft (2c) is fixedly arranged on the outer edge of the arc-shaped connecting plate (2b), the bottom of the arc-shaped connecting plate (2b) is attached to the top of the rotating plate (1a), the baffle (2e) is fixedly arranged on the top of the rotating plate (1a), the other side of the connecting shaft (2c) penetrates through the baffle (2e), and the abutting spring (2d) is sleeved on the outer edge of the rotating plate (2c), and the one end of baffle (2e) is contradicted with the outer fringe of arc connecting plate (2b), and the other end of baffle (2e) is contradicted with one side of baffle (2e), has seted up in the outer fringe of connecting axle (2c) and has perforated bolt (2h) and insert and establish in the perforation of connecting axle (2c), and bolt (2h) are contradicted with the opposite side of baffle (2 e).
4. The equipment for testing the ultimate bearing capacity of the steel pipe concrete axle-pressing stud according to claim 3, wherein the height adjusting frame (3) comprises a screw rod (3a), a spiral ring (3b), a handle (3e), an adjusting plate (3d) and two guide columns (3c), the two guide columns (3c) are vertically and fixedly arranged at the top of the rotating plate (1a), the tops of the two guide columns (3c) penetrate through the adjusting plate (3d) and are in sliding connection with the adjusting plate (3d), the spiral ring (3b) is fixedly arranged at the top of the adjusting plate (3d), the bottom of the screw rod (3a) penetrates through the adjusting plate (3d), the screw rod (3a) is meshed with the spiral ring (3b), and the handle (3e) is fixedly arranged at the top of the screw rod (3 a).
5. The device for testing the ultimate bearing capacity of the steel pipe concrete axial compression short column according to claim 4, wherein each pressing mechanism (4) comprises an annular connecting plate (4b), a pressing plate (4c), a connecting ring (4d), a plurality of weight increasing blocks (4e) and four arc-shaped baffle strips (4a), the four arc-shaped baffle strips (4a) are all fixedly arranged at the top of the annular connecting plate (4b), the four arc-shaped baffle strips (4a) are coaxially arranged, a sliding hole (3h) is formed in an adjusting plate (3d), the inner edge of the sliding hole (3h) is attached to the outer edges of the four arc-shaped baffle strips (4a), the pressing plate (4c) is fixedly arranged at the bottom of the annular connecting plate (4b), the connecting ring (4d) is fixedly arranged at the top of the four arc-shaped baffle strips (4a), and the connecting ring (4d) is detachably connected with the adjusting plate (3d), the weighting blocks (4e) are all arranged in the four arc-shaped baffle strips (4 a).
6. The equipment for testing the ultimate bearing capacity of the steel pipe concrete axial compression short column as claimed in claim 5, wherein two arc-shaped baffles (4f) are arranged on the outer edge of the connecting ring (4d), the two arc-shaped baffles (4f) are symmetrically arranged along the central longitudinal section of the connecting ring (4d), the bottoms of the arc-shaped baffles (4f) are abutted against the top of the adjusting plate (3d), and two arc-shaped through holes (3f) for the two arc-shaped baffles (4f) to pass through are formed in the adjusting plate (3 d).
7. The equipment for testing the ultimate bearing capacity of the steel pipe concrete axial compression short column according to claim 6, wherein the stamping mechanism (5) comprises a double-shaft cylinder (5a), a connecting plate (5b), a sliding plate (5c), an annular sliding mechanism (5d), a pressing plate (5e) and a stamping column (5f), the annular sliding mechanism (5d) is fixedly arranged at the top of the adjusting plate (3d), the sliding plate (5c) is arranged at the top of the annular sliding mechanism (5d), the connecting plate (5b) is vertically arranged at the top of the sliding plate (5c), the double-shaft cylinder (5a) is fixedly arranged on the connecting plate (5b), the pressing plate (5e) is fixedly arranged at the output end of the double-shaft cylinder (5a), and the stamping column (5f) for stamping the pressing mechanism (4) is fixedly arranged at the bottom of the pressing plate (5 e).
8. The apparatus for testing the ultimate bearing capacity of the steel pipe concrete axial compression stud according to claim 7, wherein the annular sliding mechanism (5d) comprises an annular slide way (5d1), an arc-shaped slide block (5d2) and an annular pressure plate (5d3), the annular slide way (5d1) is fixedly installed on the top of the adjusting plate (3d), the arc-shaped slide block (5d2) is slidably located in the annular slide way (5d1), the outer edge of the arc-shaped slide block (5d2) is attached to the inner edge of the annular slide way (5d1), the top of the arc-shaped slide block (5d2) is fixedly connected to the bottom of the sliding plate (5c), the bottom of the annular pressure plate (5d3) is abutted to the top of the sliding plate (5c), the annular pressure plate (5d3) is fixedly installed on the adjusting plate (3d) through a plurality of fixing plates (5d4), the top of the fixing plate (5d4) is fixedly connected to the bottom of the annular pressure plate (5d 685, the bottom of fixed plate (5d4) and the top fixed connection of regulating plate (3d), annular clamp plate (5d3) are through screw (5d5) and slide (5c) fixed connection, have seted up a plurality of perforation on screw (5d5), and a plurality of perforation and a plurality of clamping mechanism (2) one-to-one are seted up the screw hole that supplies screw (5d5) to connect on slide (5 c).
9. A method for testing the ultimate bearing capacity of a steel tube concrete axial compression short column is characterized in that,
s1: mounting concrete-filled steel tubes with different diameters;
the swivel base (1b) is installed on the workbench through a worker, a steel pipe concrete (6) is grabbed through the worker, the steel pipe concrete (6) is plugged between the two rubber pads (2a), the swivel base (1a) is manually rotated through the worker, the collision spring (2d) pushes the arc-shaped connecting plate (2b), the two rubber pads (2a) clamp the steel pipe concrete (6), the swivel plate (1a) is manually rotated through the worker, the clamping mechanism (2) at the next position is rotated to the front of the worker, the other steel pipe concrete (6) is installed, the process is repeated, all the steel pipe concrete (6) are installed, and the steel pipe concrete with different diameters is installed;
s2: applying pressure;
placing a plurality of weight increasing blocks (4e) between four arc-shaped blocking strips (4a) through a worker, rotating a handle (3e) through the worker, further enabling the handle (3e) to drive a screw rod (3a) to rotate, further enabling the screw rod (3a) to be meshed with a spiral ring (3b), further enabling an adjusting plate (3d) to move downwards along two guide pillars (3c), further enabling the adjusting plate (3d) to drive a pressing mechanism (4) to descend, further enabling the pressing plate (4c) to abut against the top of concrete-filled steel tube (6), and further completing the pressure application of the concrete-filled steel tube (6);
s3: performing short-term strong stamping;
the punching machine is characterized in that a worker pushes a double-shaft cylinder (5a) to enable a sliding plate (5c) to drive an arc-shaped sliding block (5d2) to rotate along an annular slide way (5d1), the sliding plate (5c) is pressed between an annular pressing plate (5d3) and the arc-shaped sliding block (5d2) through an annular pressing plate (5d3), when a punching column (5f) rotates right above a steel pipe concrete (6) to be punched, a screw (5d5) penetrates through a corresponding through hole, then the screw (5d5) is meshed with a threaded hole of the sliding plate (5c) to be connected, the double-shaft cylinder (5a) is started to enable the double-shaft cylinder (5a) to drive a pressing plate (5e) to be pressed downwards, the pressing plate (5e) drives the punching column (5f) to be pressed downwards, the punching column (5f) is enabled to punch a pressing mechanism (4), and punching force is transmitted through the pressing mechanism (4), and then the pressing mechanism (4) is used for stamping the top of the concrete filled steel tube (6), and the limit bearing capacity of short-time strong stamping is judged.
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| CN202010394152.XA CN111721631B (en) | 2020-05-11 | 2020-05-11 | Device and method for testing ultimate bearing capacity of concrete filled steel tube axial compression short column |
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| CN202010394152.XA CN111721631B (en) | 2020-05-11 | 2020-05-11 | Device and method for testing ultimate bearing capacity of concrete filled steel tube axial compression short column |
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| CN111721631B (en) | 2022-04-19 |
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