CN116735131B - Device and method for simulating continuous collapse resistance of structure under explosive load - Google Patents
Device and method for simulating continuous collapse resistance of structure under explosive load Download PDFInfo
- Publication number
- CN116735131B CN116735131B CN202310581282.8A CN202310581282A CN116735131B CN 116735131 B CN116735131 B CN 116735131B CN 202310581282 A CN202310581282 A CN 202310581282A CN 116735131 B CN116735131 B CN 116735131B
- Authority
- CN
- China
- Prior art keywords
- column
- outer column
- magnetic force
- simulating
- pushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002360 explosive Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000178 monomer Substances 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 15
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 8
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001846 repelling effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- 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
-
- 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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/317—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by electromagnetic means
-
- 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
- G01N2203/005—Electromagnetic means
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electromagnetism (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a device and a method for simulating the continuous collapse resistance of a structure under explosive load. The base is provided with a recovery hole; the prefabricated outer column is arranged above the base and comprises a plurality of outer column monomers which are circumferentially distributed, a supporting backing ring is arranged at the bottom end of each outer column monomer, and the plurality of outer column monomers are enclosed to form a cavity above the supporting backing ring; the central column is arranged in the cavity, and a plurality of pushing grooves are formed in the periphery of the central column; the magnetic force pusher is arranged in the pushing groove, the pushing part is arranged on the inner side of the magnetic force pusher, and the pushing part and the magnetic force pusher can be mutually far away from each other so as to be outwards Zhou Dingtui as an outer column monomer; the upper pressing plate is positioned above the prefabricated outer column, and a stress sensor is arranged in the center of the upper pressing plate. The device makes the cylinder inside receive the striking through setting up magnetic force impeller to reach the effect that the cylinder destroyed under the simulation explosion load, provide reliable test parameter for the relevant scheme of power test.
Description
Technical Field
The invention belongs to the technical field of building engineering structure tests, and particularly relates to a device and a method for simulating continuous collapse resistance of a structure under explosive load.
Background
Continuous collapse of a building structure refers to local destruction of the structure due to accidental actions (such as gas explosion, bomb attack, vehicle impact, fire, etc.), and causes chain reactions to cause the destruction to spread to other parts of the structure, ultimately resulting in extensive collapse of the structure. At present, the research on the continuous collapse resistance of a concrete filled steel tube structure under the action of specific explosion load is not deep enough, mainly due to the lack of a simulation device capable of truly simulating explosive damage.
In order to determine the continuous collapse resistance of the steel tube concrete combined column frame-floor structure, the connection from the microscopic mechanism level of the material to the macroscopic mechanical property is established, so that a risk assessment method is further perfected, a device for simulating the continuous collapse resistance of the structure under the explosive load is needed, and design parameters are provided for a dynamic test by simulating the condition of sudden column failure under the explosive load.
Disclosure of Invention
The embodiment of the invention provides a device and a method for simulating the continuous collapse resistance of a structure under explosive load, which can simulate the damage of a cylinder under the action of the impact force of the explosion by changing the structure of the cylinder and provide reliable test data for researching the continuous collapse resistance of the structure.
In order to achieve the above purpose, the invention adopts the following technical scheme: in a first aspect, there is provided an apparatus for simulating the resistance of a structure to continuous collapse under explosive loads, comprising:
a base having a recovery hole with an upward opening;
the prefabricated outer column is arranged above the base and comprises a plurality of outer column monomers which are circumferentially distributed, a supporting backing ring which extends towards the axis of the prefabricated outer column is arranged at the bottom of each outer column monomer, and the plurality of outer column monomers are enclosed to form a cavity which is positioned above the supporting backing ring;
the center column is arranged in the cavity, and a plurality of pushing grooves which are arranged in one-to-one correspondence with the outer column monomers are arranged on the periphery of the center column and penetrate through the center column along the axial direction of the center column;
the magnetic force pushers are arranged in the pushing grooves in a one-to-one correspondence manner, the inner sides of the magnetic force pushers are connected with pushing parts in a radial sliding manner, and the pushing parts and the magnetic force pushers can be mutually far away so that the magnetic force pushers can outwards Zhou Dingtui the outer column single bodies and the center column can fall into the recycling holes;
the upper pressing plate is arranged above the central column and the prefabricated outer column, and a stress sensor is arranged in the center of the upper pressing plate.
As another embodiment of the invention, a sliding groove for accommodating the pushing part is arranged on the magnetic force pushing device, the sliding groove extends downwards to penetrate through the bottom surface of the magnetic force pushing device along the axial direction of the pushing part, a first electromagnetic box is arranged on the inner groove wall of the sliding groove, a second electromagnetic box horizontally corresponding to the first electromagnetic box is arranged on the side wall of the pushing part, which is close to the magnetic force pushing device, and the first electromagnetic box and the second electromagnetic box are used for magnetically repelling each other when the power is applied so as to enable the pushing part and the magnetic force pushing device to be mutually far away.
As another embodiment of the present invention, the outer circumference of the prefabricated outer column is sleeved with a sleeve ring for hooping a plurality of outer column units to the outer circumference of the center column.
As another embodiment of the invention, the sleeve ring is provided with a fixed end and an extension end, a lock ring which is arranged in a penetrating way is arranged on the fixed end, the extension end penetrates through the lock ring, a plurality of arc tooth grooves which are arranged at intervals along the trend of the extension end are arranged on the side wall of the extension end, and an elastic locking piece which is positioned on the side part of the extension end and is in butt locking with the arc tooth grooves is arranged in the lock ring.
As another embodiment of the invention, the elastic locking piece comprises an elastic piece connected with the inner wall of the locking ring and an arc-shaped clamping bean connected with the end part of the elastic piece and clamped with the arc-shaped tooth slot.
As another embodiment of the invention, the outer diameter of the circumference surrounded by the prefabricated outer column is equal to the outer diameter of the base.
As another embodiment of the present invention, the top surface of the upper platen is provided with a threading groove extending in the radial direction of the upper platen.
As another embodiment of the invention, the center of the base is provided with a threading hole which penetrates up and down, and the threading hole and the recovery hole are concentrically arranged.
As another embodiment of the invention, the bottom of the recovery hole is provided with a buffer cushion.
The device for simulating the continuous collapse resistance of the structure under the explosive load has the beneficial effects that: compared with the prior art, the device for simulating the continuous collapse resistance of the structure under the explosion load is characterized in that the magnetic force pusher is arranged in the pushing groove of the central column, the outer column monomers are enclosed on the periphery of the central column, the central column is supported above the base through the supporting backing ring, the outer side wall of the magnetic force pusher is correspondingly arranged with the inner side wall of the outer column monomers, the stress sensor arranged on the upper pressing plate can effectively monitor the strain state of the column structure, when the strain reaches the test set value, the magnetic force pusher is started to enable the pushing part to pop out, under the counter force action of the central column, the magnetic force pusher pushes the outer column monomers outwards, so that the effect that the column structure is suddenly subjected to the explosion load is simulated, the supporting backing ring at the bottom of the outer column monomers moves outwards to be separated from the periphery of the central column, and the central column loses the support and falls downwards into the recovery hole of the base, so that the effect of breaking the column is formed. The device makes the cylinder inside receive the striking through setting up magnetic force impeller to reach the effect that the cylinder destroyed under the simulation explosion load, provide reliable test parameter for the relevant scheme of power test.
In a second aspect, the embodiment of the invention further provides a test method performed by using the device for simulating the continuous collapse resistance of the structure under the explosive load, which comprises the following steps:
s1, installing a magnetic force pusher into a pushing groove;
s2, installing a plurality of outer column monomers to the periphery of the central column, surrounding the outer column monomers to synthesize a prefabricated outer column, and enabling the central column to be positioned in a cavity of the prefabricated outer column;
s3, installing the prefabricated outer column and the central column above the base, sleeving the sleeve on the periphery of the prefabricated outer column, and enabling the central column, the prefabricated outer column and the base to form an outer column structure;
s4, installing an upper pressing plate above the outer column structure, and enabling the stress sensor to correspond to the axis of the outer column structure up and down;
s5, connecting the base to a test bed, connecting the outer column structure with the floor structure, connecting the side column structures at two sides of the floor structure, applying downward load to the top of the outer column structure through the loader, and monitoring data of the stress sensor;
s6, when the reading of the stress sensor reaches a test set value, starting the magnetic force pusher so that the magnetic force pusher pushes the outer column monomer outwards to simulate explosion load;
s7, the outer column monomer moves outwards until the supporting backing ring is separated from the central column, and the central column loses the support and falls down into the recovery hole, so that the effect of column breakage is achieved;
s8, recording and analyzing each test data.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for simulating the continuous collapse resistance of a structure under an explosive load according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the apparatus for simulating continuous collapse resistance of a structure under explosive load in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional elevation view of the apparatus for simulating continuous collapse resistance of a structure under explosive load of FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an exploded status structure of the apparatus for simulating continuous collapse resistance of a structure under an explosive load in FIG. 1 according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an exploded structure of a magnetic force pusher according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a center pillar according to an embodiment of the present invention;
FIG. 7 is a schematic view of a prefabricated outer column according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of an upper platen according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base according to an embodiment of the present invention;
FIG. 10 is a schematic view of a sleeve ring according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a test state of a device for simulating the continuous collapse resistance of a structure under an explosive load according to an embodiment of the present invention.
In the figure:
1. a base; 11. a recovery hole; 12. a connection part; 13. a threading hole; 14. a cushion pad; 2. a center column; 21. a pushing groove; 3. a magnetic pusher; 31. a sliding groove; 32. a pushing part; 33. a first electromagnetic box; 34. a second electromagnetic box; 4. prefabricating an outer column; 41. a support backing ring; 42. an outer column monomer; 5. an upper press plate; 51. a stress sensor; 52. a wire penetrating groove; 6. a sleeve ring; 61. an elastic locking member; 611. arc-shaped bean clamping; 612. an elastic member; 62. tooth slots; 63. a locking ring; 10. a test bed; 20. a loader; 30. a floor structure; 40. and a side column structure.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.
Referring to fig. 1 to 11 together, an apparatus for simulating continuous collapse resistance of a structure under an explosive load according to the present invention will now be described. The device for simulating the continuous collapse resistance of the structure under the explosion load comprises a base 1, a prefabricated outer column 4, a center column 2, a plurality of magnetic force pushers 3 and an upper pressing plate 5. The base 1 is provided with a recovery hole 11 with an upward opening; the prefabricated outer column 4 is arranged above the base 1, the prefabricated outer column 4 comprises a plurality of outer column monomers 42 which are circumferentially distributed, a supporting backing ring 41 which extends towards the axis of the prefabricated outer column 4 is arranged at the bottom of the outer column monomers 42, and the plurality of outer column monomers 42 are enclosed to form a cavity above the supporting backing ring 41; the center column 2 is arranged in the cavity, the periphery of the center column 2 is provided with a plurality of pushing grooves 21 which are arranged in one-to-one correspondence with the outer column monomers 42, and the pushing grooves 21 penetrate through the center column 2 along the axial direction; the plurality of magnetic force pushers 3 are arranged in the pushing groove 21 in a one-to-one correspondence manner, pushing parts 32 are connected to the inner sides of the magnetic force pushers 3 in a sliding manner along the radial direction, and the pushing parts 32 and the magnetic force pushers 3 can be mutually far away so that the magnetic force pushers 3 can outwards Zhou Dingtui the outer column single bodies 42 and the center column 2 can fall into the recovery hole 11; the upper pressing plate 5 is arranged above the central column 2 and the prefabricated outer column 4, and a stress sensor 51 is arranged in the center of the upper pressing plate 5.
Compared with the prior art, the device for simulating the continuous collapse resistance of the structure under the explosion load is provided, the magnetic force pusher 3 is arranged in the pushing groove 21 of the central column 2, a plurality of outer column monomers 42 are enclosed on the periphery of the central column 2, the central column 2 is supported above the base 1 through the supporting backing ring 41, the outer side wall of the magnetic force pusher 3 is correspondingly arranged with the inner side wall of the outer column monomers 42, the stress sensor 51 arranged on the upper pressing plate 5 can effectively monitor the strain state of the column structure, when the strain reaches a test set value, the magnetic force pusher 3 is started to enable the pushing part 32 to pop up, under the reaction action of the central column 2, the magnetic force pusher 3 pushes the outer column monomers 42 outwards, so that the effect that the column structure is suddenly subjected to the explosion load is simulated, the supporting backing ring 41 at the bottom of the outer column monomers 42 moves outwards to be separated from the periphery of the central column 2, the central column 2 loses the support and falls down into the recovery hole 11 of the base 1, and the effect of breaking the column is formed. The device makes the cylinder inside receive the striking through setting up magnetic force impeller 3 to reach the effect that the cylinder destroyed under the simulation explosion load, provide reliable test parameter for the relevant scheme of power test.
In this embodiment, when the pushing portion 32 of the magnetic force pusher 3 pops up, the inner side wall of the pushing portion 32 is abutted against the inner side wall of the pushing slot 21 and is acted by the counterforce of the inner side wall of the pushing slot 21, so that the magnetic force pusher 3 is forced to push out Zhou Danchu and Zhou Dingtui the outer column unit 42 outwards, and when the center column 2 is separated from the support of the support backing ring 41, the center column 2 and the pushing portion 32 in the pushing slot 21 drop into the recovery hole 11 together. Specifically, the outer diameter of the center post 2 is smaller than the inner diameter of the recovery hole 11, so that the center post 2 and the pushing portion 32 can smoothly drop into the recovery hole 11 to achieve the effect of simulating a broken post.
When the outer column monomer 42 encloses the structure of the prefabricated outer column 4, the plurality of support backing rings 41 enclose the annular structure, so that the function of supporting the central column 2 can be achieved, the distance of the outer column monomer 42 moving to the periphery during simulated blasting can be reduced, and the column blasting time can be shortened.
The prefabricated outer column 4 and the base 1 are all formed by prefabricating concrete, so that a column structure required by the continuous collapse resistance test is simulated more truly.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 2 to 5, a sliding groove 31 for accommodating a pushing portion 32 is provided on the magnetic force pusher 3, the sliding groove 31 extends downward along an axial direction of the pushing portion 32 to penetrate through a bottom surface of the magnetic force pusher 3, a first electromagnetic box 33 is provided on an inner groove wall of the sliding groove 31, a second electromagnetic box 34 horizontally corresponding to the first electromagnetic box 33 is provided on a side wall of the pushing portion 32 close to the magnetic force pusher 3, and the first electromagnetic box 33 and the second electromagnetic box 34 are used for magnetically repelling each other to separate the pushing portion 32 and the magnetic force pusher 3 when being electrified.
In this embodiment, the magnetic force pusher 3 and the pushing portion 32 extend along the direction of the pushing slot 21, and the outer dimension of the magnetic force pusher 3 is adapted to the dimension of the pushing slot 21. When the pushing part 32 is placed in the sliding groove 31, the bottom end face of the pushing part 32 is flush with the bottom end face of the magnetic force pusher 3, and the inner groove wall of the sliding groove 31 on the magnetic force pusher 3 and the side wall of the pushing part 32 close to the magnetic force pusher 3 are provided with mounting grooves, so that the first electromagnetic box 33 and the second electromagnetic box 34 can be conveniently mounted. When the magnetic force pusher 3 is not started, the first electromagnetic box 33 and the second electromagnetic box 34 are in a non-electrified state, and the pushing part 32 is completely retracted into the sliding groove 31 of the magnetic force pusher 3; when the magnetic force pusher 3 is started, the first electromagnetic box 33 and the second electromagnetic box 34 are electrified and push out the pushing parts 32 along the horizontal direction at the moment of magnetic force repulsion, the magnetic force pushers 3 are arranged in a circumferential array along the axis of the central column 2, the pushing parts 32 push and collide towards the axis direction of the central column 2, and the magnetic force pushers 3 respectively collide with the outer column monomers 42 positioned at the periphery of the magnetic force pushers 3 towards the periphery at the moment due to the reaction force of the inner groove wall of the pushing groove 21, so that the outer column monomers 42 are respectively blasted towards the periphery, and the effect of simulating sudden column damage under explosive load is achieved.
Specifically, a through hole penetrating up and down is formed in the pushing portion 32, so that a power line of the first electromagnetic box 33 and a power line of the second electromagnetic box 34 can be conveniently penetrated into the through hole and led out downwards, and remote operation is facilitated.
As a specific implementation of the embodiment of the present invention, referring to fig. 1 to 3, the outer circumference of the prefabricated outer column 4 is sleeved with a sleeve ring 6, and the sleeve ring 6 is used for hooping a plurality of outer column units 42 to the outer circumference of the central column 2.
In this embodiment, after the outer column unit 42 is spliced to the outer periphery of the center column 2, a sleeve ring 6 is sleeved on the outer periphery of the spliced prefabricated outer column 4, so that the position of the prefabricated outer column 4 is relatively stable.
As a specific implementation of the embodiment of the present invention, referring to fig. 10, the sleeve ring 6 has a fixed end and an extension end, the fixed end is provided with a locking ring 63 disposed therethrough, the extension end is disposed through the locking ring 63, a plurality of arc-shaped tooth grooves 62 disposed along the direction of the extension end at intervals are disposed on the side wall of the extension end, and an elastic locking member 61 disposed on the side portion of the extension end and abutting against the arc-shaped tooth grooves 62 is disposed in the locking ring 63.
In some possible embodiments, the elastic locking member 61 includes an elastic member 612 connected to the inner wall of the locking ring 63 and an arc-shaped locking bean 611 connected to an end of the elastic member 612 and engaged with the arc-shaped tooth groove 62.
In this embodiment, in order to ensure that the prefabricated outer column 4 is not limited by the peripheral sleeve ring 6 when being blasted around, a locking ring 63 with an elastic locking member 61 is provided on the fixed end of the sleeve ring 6. Specifically, the sleeve ring 6 is a thin strip-shaped member, the fixed end of the sleeve ring 6 is provided with a locking ring 63, a section of continuous arc-shaped tooth groove 62 is uniformly arranged on the inner peripheral wall of the extending end, an elastic locking piece 61 and an inserting hole for inserting the extending end of the sleeve ring 6 are arranged in the locking ring 63, the elastic locking piece 61 is connected to the inner wall of the locking ring 63 through an elastic piece 612, and the elastic locking piece is matched with the arc-shaped tooth groove 62 in a clamping way through an arc-shaped clamping bean 611 so as to stabilize the prefabricated outer column 4. When in use, the extending end of the sleeve ring 6 is inserted into the insertion hole on the lock ring 63 and is tensioned to be sleeved on the outer peripheral wall of the prefabricated outer column 4, and at the moment, the arc-shaped clamping beans 611 of the elastic locking piece 61 are clamped in the corresponding arc-shaped tooth grooves 62, so that a plurality of outer column monomers 42 can be stably spliced into the structure of the prefabricated outer column 4. When the outer column monomer 42 is impacted by the magnetic force pusher 3, the outer column monomer 42 is outwards Zhou Dingtui to form a sleeve ring 6, and as the clamping surfaces of the arc-shaped clamping beans 611 and the arc-shaped tooth grooves 62 are arc-shaped, when the expansion force of the prefabricated outer column 4 to the sleeve ring 6 is received, the clamping effect of the elastic locking piece 61 is invalid, and the arc-shaped clamping beans 611 and the arc-shaped tooth grooves 62 slide relatively, so that the extending end of the sleeve ring 6 is separated from the locking ring 63, and the outwards blasting effect of the prefabricated outer column 4 is ensured.
As a specific implementation of the embodiment of the present invention, referring to fig. 1 or 3, the outer diameter of the prefabricated outer column 4 is equal to the outer diameter of the base 1.
In this embodiment, the magnetic force pusher 3 is disposed in the pushing slot 21 of the central column 2, and the plurality of outer column monomers 42 are wrapped around the outer periphery of the central column 2 to form a prefabricated outer column 4, where the outer diameter of the prefabricated outer column 4 is equal to the outer diameter of the base 1, so that the central column 2, the prefabricated outer column 4 and the base 1 form an integral outer column structure, which can truly simulate the column structure required by the test.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 and 8, the top surface of the upper pressing plate 5 is provided with a threading groove 52, and the threading groove 52 extends along the radial direction of the upper pressing plate 5.
In this embodiment, the center of the upper pressing plate 5 is provided with a stress sensor 51, the threading groove 52 is in a semi-circular arc shape with a concave shape, and extends from the center of the upper pressing plate 5 to the peripheral wall to extend and penetrate through, so that the line of the stress sensor 51 is led out outwards, and the line is protected from being damaged by the load force applied by the experimental device.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 3, a threading hole 13 penetrating up and down is provided in the center of the base 1, and the threading hole 13 and the recovery hole 11 are concentrically arranged.
In this embodiment, the base 1 is made of UHPC high-strength concrete, so that the strength of the column body can be ensured to the greatest extent, and the friction between the prefabricated outer column 4 and the top end surface of the base 1 can be reduced when the prefabricated outer column 4 faces outwards Zhou Danchu. The base 1 can not be damaged in the test, and can be recycled, so that the test consumable is saved.
The bottom end surface of the base 1 is provided with a connecting part 12, the outer diameter of the connecting part 12 is larger than the outer diameter of the base 1, and a connecting hole for connecting with the test stand 10 is formed. The threading hole 13 is located the center of connecting portion 12 and the concentric setting of retrieving hole 11, and after the power cord of first electromagnetic box 33 and second electromagnetic box 34 on the magnetic force impeller 3 was drawn forth downwards, draw to the outside of outer column structure from threading hole 13 downwards through retrieving hole 11, be convenient for be connected with the controller and carry out remote operation, improve factor of safety.
As a specific implementation of the embodiment of the present invention, referring to fig. 3 or 4, the bottom of the recovery hole 11 is provided with a buffer pad 14.
In this embodiment, the inner diameter of the recovery hole 11 is larger than the outer diameter of the center post 2, so that the center post 2 can be recovered conveniently, the cushion pad 14 can be laid by foam, sponge and the like, and when the center post 2 falls down into the recovery hole 11, the cushion pad 14 can provide buffering to protect the center post 2 from damage, so that the center post 2 can be recovered and reused, and meanwhile, the cushion pad 14 can also avoid falling and knocking noise.
Based on the same inventive concept, the embodiment of the invention also provides a test method by using the device for simulating the continuous collapse resistance of the structure under the explosive load, wherein the test method comprises the following steps:
s1, installing a magnetic force pusher 3 into a pushing groove 21;
s2, installing a plurality of outer column monomers 42 to the periphery of the central column 2, and surrounding the outer column monomers 42 to synthesize a prefabricated outer column 4, wherein the central column 2 is positioned in a cavity of the prefabricated outer column 4;
s3, installing the prefabricated outer column 4 and the central column 2 above the base 1, and sleeving the sleeve ring 6 on the periphery of the prefabricated outer column 4 to enable the central column 2, the prefabricated outer column 4 and the base 1 to form an outer column structure;
s4, installing an upper pressing plate 5 above the outer column structure, and enabling the stress sensor 51 to correspond to the axis of the outer column structure up and down;
s5, connecting the base 1 to the test bed 10, connecting the outer column structure with the floor structure 30, connecting the side column structures 40 on two sides of the floor structure 30, applying downward load to the top of the outer column structure through the loader 20, and monitoring data of the stress sensor 51;
s6, when the reading of the stress sensor 51 reaches a test set value, starting the magnetic force pusher 3 to enable the magnetic force pusher 3 to push the outer column monomer 42 outwards so as to simulate explosion load;
s7, the outer column monomer 42 moves outwards until the supporting backing ring 41 is separated from the central column 2, and the central column 2 loses the support and falls down into the recovery hole 11, so that the effect of column breakage is achieved;
s8, recording and analyzing each test data.
In this embodiment, the test stand 10 and the loader 20 are both in the prior art, and specific experimental principles are not described herein. The test device has the advantages that the magnetic force pusher 3 is arranged to enable the inside of the cylinder to be impacted so as to achieve the effect of simulating the cylinder damage under explosive load, so that more accurate researches on the mechanism of continuous collapse resistance of the structure are carried out, the safety of the test is improved, meanwhile, the test device also has the advantages of small occupied space, low test cost and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. An apparatus for simulating the resistance of a structure to continuous collapse under an explosive load, comprising:
a base having a recovery hole with an upward opening;
the prefabricated outer column is arranged above the base and comprises a plurality of outer column monomers which are circumferentially distributed, a supporting backing ring which extends towards the axis of the prefabricated outer column is arranged at the bottom of each outer column monomer, and a plurality of outer column monomers are enclosed to form a cavity above the supporting backing ring;
the center column is arranged in the cavity, a plurality of pushing grooves which are arranged in one-to-one correspondence with the outer column monomers are formed in the periphery of the center column, and the pushing grooves penetrate through the center column along the axial direction of the center column;
the plurality of magnetic force pushers are arranged in the pushing grooves in a one-to-one correspondence manner, pushing parts are connected to the inner sides of the magnetic force pushers in a sliding manner along the radial direction, and the pushing parts and the magnetic force pushers can be mutually far away so that the magnetic force pushers can outwards Zhou Dingtui the outer column single bodies and the center column falls into the recycling holes;
the upper pressing plate is arranged above the central column and the prefabricated outer column, and a stress sensor is arranged in the center of the upper pressing plate.
2. The device for simulating the continuous collapse resistance of a structure under explosive load according to claim 1, wherein the magnetic force pusher is provided with a sliding groove for accommodating the pushing part, the sliding groove extends downwards to penetrate through the bottom surface of the magnetic force pusher along the axial direction of the pushing part, the inner groove wall of the sliding groove is provided with a first electromagnetic box, the side wall of the pushing part, which is close to the magnetic force pusher, is provided with a second electromagnetic box horizontally corresponding to the first electromagnetic box, and the first electromagnetic box and the second electromagnetic box are used for magnetically repelling each other when the magnetic force is applied to enable the pushing part and the magnetic force pusher to be separated from each other.
3. A device for simulating the resistance of a structure to continuous collapse under explosive loads as claimed in claim 1, wherein the outer circumference of said prefabricated outer column is provided with a sleeve collar for hooping a plurality of said outer column cells to the outer circumference of said central column.
4. A device for simulating the resistance to continuous collapse of a structure under explosive loading as claimed in claim 3, wherein the sleeve ring has a fixed end and an extended end, the fixed end is provided with a lock ring arranged in a penetrating manner, the extended end is arranged in a penetrating manner through the lock ring, the side wall of the extended end is provided with a plurality of arc tooth grooves arranged at intervals along the trend of the extended end, and an elastic locking piece which is positioned at the side part of the extended end and is in abutting locking with the arc tooth grooves is arranged in the lock ring.
5. The apparatus for simulating the resistance to continuous collapse of a structure under an explosive load according to claim 4, wherein said elastic locking member comprises an elastic member connected to the inner wall of said locking ring and an arc-shaped locking bean connected to the end of said elastic member and engaged with said arc-shaped tooth slot.
6. A device for simulating the resistance of a structure to continuous collapse under explosive loads according to claim 1, wherein the outer diameter of said prefabricated outer column is equal to the outer diameter of said base.
7. A device for simulating the resistance of a structure to continuous collapse under explosive loads according to claim 1, wherein the top surface of the upper platen is provided with threading slots extending radially of the upper platen.
8. The device for simulating the continuous collapse resistance of a structure under explosive load according to claim 1, wherein the center of the base is provided with a threading hole penetrating up and down, and the threading hole and the recovery hole are arranged concentrically.
9. A device for simulating the resistance of a structure to continuous collapse under explosive loads according to claim 8, wherein the bottom of said recovery orifice is provided with a cushion.
10. A method of simulating the resistance to continuous collapse of a structure under an explosive load, characterized in that the test is performed using the device for simulating the resistance to continuous collapse of a structure under an explosive load according to any one of claims 1 to 9, the method of simulating the resistance to continuous collapse of a structure under an explosive load comprising the steps of:
s1, installing the magnetic force pusher into the pushing groove;
s2, installing a plurality of outer column monomers to the periphery of the central column, enclosing the outer column monomers to form a prefabricated outer column, and enabling the central column to be located in a cavity of the prefabricated outer column;
s3, installing the prefabricated outer column and the central column above the base, sleeving a sleeve on the periphery of the prefabricated outer column, and enabling the central column, the prefabricated outer column and the base to form an outer column structure;
s4, installing the upper pressing plate above the outer column structure, and enabling the stress sensor to correspond to the axis of the outer column structure up and down;
s5, connecting the base to a test bed, connecting an outer column structure with a floor structure, connecting side column structures at two sides of the floor structure, applying downward load to the top of the outer column structure through a loader, and monitoring data of the stress sensor;
s6, when the reading of the stress sensor reaches a test set value, starting the magnetic force pusher so that the magnetic force pusher pushes the outer column monomer outwards to simulate explosion load;
s7, the outer column monomer moves outwards until the supporting backing ring is separated from the central column, and the central column loses the bearing and falls down into the recovery hole, so that the effect of column breakage is achieved;
s8, recording and analyzing each test data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310581282.8A CN116735131B (en) | 2023-05-22 | 2023-05-22 | Device and method for simulating continuous collapse resistance of structure under explosive load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310581282.8A CN116735131B (en) | 2023-05-22 | 2023-05-22 | Device and method for simulating continuous collapse resistance of structure under explosive load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116735131A CN116735131A (en) | 2023-09-12 |
| CN116735131B true CN116735131B (en) | 2024-02-06 |
Family
ID=87907077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310581282.8A Active CN116735131B (en) | 2023-05-22 | 2023-05-22 | Device and method for simulating continuous collapse resistance of structure under explosive load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116735131B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882466U (en) * | 2014-04-04 | 2014-10-15 | 中国矿业大学 | Mining disaster simulated training system |
| CN105158000A (en) * | 2015-07-27 | 2015-12-16 | 天津大学 | Adsorption type electromagnet initial destroying apparatus for space structure collapse test |
| CN207066883U (en) * | 2017-06-21 | 2018-03-02 | 中国矿业大学(北京) | A kind of confined pressure loading device of rock physicses Experiments of Machanics strength test |
| CN109322264A (en) * | 2018-11-20 | 2019-02-12 | 甘沛沛 | A kind of road prevention bucket using opposition protecting against shock |
| CN109916747A (en) * | 2019-03-28 | 2019-06-21 | 山东科技大学 | A kind of building structural element fire and impact real-time coupling test method |
| CA3070440A1 (en) * | 2017-12-18 | 2019-06-27 | China University Of Mining And Technology | Anchor rod or cable operating performance testing device designed to simulate fracturation and bed separation based on electromagnetic action and method thereof |
| CN212007826U (en) * | 2020-04-20 | 2020-11-24 | 天津大学 | Automatic initial failure device for rectangular rod spatial structure continuous collapse test |
| CN112067482A (en) * | 2020-09-02 | 2020-12-11 | 内蒙古大学 | Intelligent simulation earthquake loading test box |
| CN112903483A (en) * | 2021-03-11 | 2021-06-04 | 天津大学 | Test device and method for simulating collapse and damage of lower beam plate structure under explosive load |
| CN115248129A (en) * | 2022-01-18 | 2022-10-28 | 兰州理工大学 | Electromagnetic transient failure excitation system |
-
2023
- 2023-05-22 CN CN202310581282.8A patent/CN116735131B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882466U (en) * | 2014-04-04 | 2014-10-15 | 中国矿业大学 | Mining disaster simulated training system |
| CN105158000A (en) * | 2015-07-27 | 2015-12-16 | 天津大学 | Adsorption type electromagnet initial destroying apparatus for space structure collapse test |
| CN207066883U (en) * | 2017-06-21 | 2018-03-02 | 中国矿业大学(北京) | A kind of confined pressure loading device of rock physicses Experiments of Machanics strength test |
| CA3070440A1 (en) * | 2017-12-18 | 2019-06-27 | China University Of Mining And Technology | Anchor rod or cable operating performance testing device designed to simulate fracturation and bed separation based on electromagnetic action and method thereof |
| CN109322264A (en) * | 2018-11-20 | 2019-02-12 | 甘沛沛 | A kind of road prevention bucket using opposition protecting against shock |
| CN109916747A (en) * | 2019-03-28 | 2019-06-21 | 山东科技大学 | A kind of building structural element fire and impact real-time coupling test method |
| CN212007826U (en) * | 2020-04-20 | 2020-11-24 | 天津大学 | Automatic initial failure device for rectangular rod spatial structure continuous collapse test |
| CN112067482A (en) * | 2020-09-02 | 2020-12-11 | 内蒙古大学 | Intelligent simulation earthquake loading test box |
| CN112903483A (en) * | 2021-03-11 | 2021-06-04 | 天津大学 | Test device and method for simulating collapse and damage of lower beam plate structure under explosive load |
| CN115248129A (en) * | 2022-01-18 | 2022-10-28 | 兰州理工大学 | Electromagnetic transient failure excitation system |
Non-Patent Citations (3)
| Title |
|---|
| 圆弧扩盖板式侧板加强型连接节点抗连续倒塌性能参数化分析;张旺等;《第二十二届全国现代结构工程学术研讨会论文集》;全文 * |
| 钢管混凝土组合柱—钢梁侧板加强型节点抗连续倒塌性能研究;贾世杨;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑 （月刊） 建筑科学与工程》;全文 * |
| 隔板贯通式全螺栓节点抗连续性倒塌性能数值模拟分析;秦希等;《振动与冲击》;第34卷(第10期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116735131A (en) | 2023-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3584371B1 (en) | Device for verifying the bearing capacity of a pile of an offshore foundation construction | |
| CN116735131B (en) | Device and method for simulating continuous collapse resistance of structure under explosive load | |
| CN114383947B (en) | Dynamic and static coupling performance test system for multifunctional anchoring system | |
| CN112377128B (en) | Locator is retrieved with freedom in installation of drilling stressmeter | |
| CN112432792B (en) | Solid rocket engine test frame based on magnetic suspension contactless weak constraint | |
| CN105486523A (en) | Allowance test assessment method for mild detonation fuse separation device | |
| CN114323966A (en) | Comprehensive mechanical property test system and method for underground engineering anchoring material | |
| CN112146996A (en) | Experimental device for normal disturbance induces rock mass shear fracture | |
| CN113863297B (en) | Sectional displacement multistage control negative poisson self-expansion anchor rod device | |
| CN103162581A (en) | Arrow-loaded electric field stretching rod ground unfolding experimental device | |
| JP4513092B2 (en) | Rapid loading test equipment for ground anchors | |
| CN113028924B (en) | Electric spark millisecond delay quantitative blasting device, system and method for model test | |
| CN200986509Y (en) | Switching joint and three-point bending tester for multifunctional rock tester | |
| CN112880958B (en) | Anchoring body axial shock resistance testing method and test bed | |
| CN114993859A (en) | Test device and method for testing impact resistance of anchor rod | |
| CN113933551A (en) | Universal multi-probe connector for vibration insulation test of detonator | |
| CN208966327U (en) | Device for pressure measurement and system | |
| CN115406763A (en) | Sound wave detection and rock direct tension integrated testing machine and testing method thereof | |
| CN212714929U (en) | Anchor cable device for strong unloading broken rock mass area | |
| CN218885606U (en) | Anti-floating anchor rod drawing lock | |
| CN219015938U (en) | Anchor rod SHPB power impact test end fixing bearing device and impact test system | |
| CN113295063A (en) | Distributed step blasting equipment and blasting method | |
| CN211503866U (en) | Explosive bolt destroying device | |
| US5987962A (en) | Copper crusher gauge holder | |
| CN209069866U (en) | Rock type acoustic emission sensor fixes device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |