Shock simulation assembly type concrete column node shock resistance detection device

Abstract

The invention discloses a vibration simulation assembly type concrete column node earthquake resistance detection device, and relates to the technical field of building structure earthquake resistance detection, and the device comprises a substrate, a center console, a simulation unit and a spraying unit, and the substrate is used for the installation and fixation of the center console, the simulation unit and the spraying unit. The center console is used for controlling opening and closing of the simulation unit and the spraying unit, the simulation unit is used for simulating vibration of different degrees to facilitate anti-seismic detection of a to-be-detected concrete column node, and the spraying unit is used for accelerating the aging state of concrete at the concrete column node to facilitate detection of the anti-seismic performance of the concrete column node in the aging state. The center console starts the simulation unit, the simulation unit generates vibration of different degrees according to needs to simulate ground vibration caused when earthquakes or roadside trucks pass through, the spraying unit sprays concrete column nodes, the anti-seismic performance of concrete of different aging degrees is detected, and prediction in advance and follow-up improvement work can be conveniently carried out.

Description

Technical Field

[0001] The invention relates to the technical field of building structure seismic resistance detection, in particular to a vibration-simulating assembled concrete column node seismic resistance detection device. Background Art

[0002] With the continuous development of construction technology, prefabricated concrete structures have been more and more widely used in construction projects. Prefabricated concrete structures are assembled on site from prefabricated components, and the connection quality and seismic performance of their nodes are crucial to the safety of the entire structure.

[0003] In actual use, concrete structures will gradually age over time, especially in various complex environments, where the aging rate may be accelerated. The aging of concrete will affect the steel bars inside it, changing the mechanical properties of the steel bars and the bonding properties with the concrete. In the aged state, the steel bars in the concrete may rust, lose strength, and have poor ductility, which will have an adverse effect on the seismic performance of the prefabricated concrete column nodes.

[0004] At present, the seismic resistance test of prefabricated concrete column nodes is mainly focused on newly built structures or structures that have not been aged, and there is a lack of effective testing methods for the seismic performance of concrete column nodes in an aged state. Traditional seismic resistance testing methods usually use static loading or low-frequency dynamic loading, which is difficult to truly simulate the high-frequency vibration and complex stress state under earthquake action.

[0005] In addition, existing detection devices have certain limitations in simulating vibration. Some devices can only achieve vibration in a single direction and cannot fully simulate the multi-directional vibration under the action of an earthquake; some devices have a limited range of vibration frequency and amplitude adjustment and cannot meet the simulation requirements of earthquakes of different intensities; and some devices do not install and fix the test pieces firmly enough during the detection process, which can easily lead to inaccurate test results.

[0006] Therefore, in order to ensure the safety of prefabricated concrete structures during use, especially their seismic performance in an aged state, there is an urgent need for a device that can simulate high-frequency, multi-directional vibrations and is suitable for seismic resistance testing of concrete column nodes in an aged state. Summary of the invention

[0007] The object of the present invention is to provide a device for detecting the seismic resistance of assembled concrete column nodes by simulating vibration, so as to solve the problems raised in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The seismic resistance detection device for assembled concrete column nodes that simulates vibration includes a base plate, a center console, a simulation unit and a spray unit. The base plate is placed on a horizontal foundation. The center console is fixedly mounted on the upper surface of the base plate near one end of the horizontal foundation. The simulation unit is fixedly mounted on the upper surface of the base plate near one end of the horizontal foundation. The simulation unit has the function of detecting seismic resistance of concrete column nodes to different degrees. The simulation unit is connected to the spray unit. The simulation unit is electrically connected to the center console. The spray unit is installed on the concrete column node. The spray unit has the function of accelerating aging of the concrete column. The spray unit is electrically connected to the center console.

[0010] The base plate is used for the installation and fixation of the center console, simulation unit and spray unit. The center console is used to control the opening and closing of the simulation unit and the spray unit. The simulation unit is used to simulate vibrations of different degrees to facilitate the seismic resistance test of the concrete column nodes to be tested. The spray unit is used to accelerate the aging state of concrete at the concrete column nodes to facilitate the detection of the seismic resistance of the concrete column nodes under the aged state. When the simulation unit is started by the center console, the simulation unit generates vibrations of different degrees as needed to simulate the ground vibration caused by earthquakes or roadside trucks passing by. The concrete column nodes are sprayed through the spray unit to detect the seismic resistance of concrete with different aging degrees, which is convenient for early prediction and subsequent improvement work.

[0011] Furthermore, the simulation unit includes a fixed cylinder, an electromagnet, a lifting platform, a sliding column, a buffer spring, a ladder platform, a swing plate, a support column, a telescopic limit cylinder, a straight cylinder, a telescopic spring, a slide plate, a coil and a mounting rod. The fixed cylinder is fixedly mounted on the upper surface of one end of the substrate close to the horizontal foundation, the electromagnet is fixedly mounted on the inner surface of one end of the fixed cylinder close to the substrate, the lifting platform is fixedly connected to the ladder platform away from the center of the surface of one end of the substrate, a sliding column is fixedly mounted on the surface of one end of the lifting platform close to the substrate, the sliding column is slidably mounted inside the fixed cylinder, the sliding column is provided with a sealing ring with the same inner diameter as the fixed cylinder at one end close to the substrate, the side wall of the fixed cylinder is provided with an air suction port and an air supply port, and both the air suction port and the air supply port are provided with a one-way valve, the swing plate is rotatably connected to the ladder platform at one end close to the substrate through a connecting rod, one end of the buffer spring is fixedly connected to the surface of one end of the swing plate close to the substrate, and the other end is connected to the lifting platform far away from the lifting platform The cam is fixedly connected to the surface of one end of the substrate, one end of the support column is fixedly mounted on the upper surface of the substrate, and the other end passes through the lifting platform and is fixedly connected to the fixed end of the dual-axis motor. The fixed end of the telescopic limit cylinder is fixedly mounted on the upper surface of the substrate, and the movable end of the telescopic limit cylinder is fixedly mounted on the surface of one end of the lifting platform close to the substrate. The straight cylinder is fixedly mounted on the surface of one end of the lifting platform away from the substrate. One end of the telescopic spring is fixedly connected to the surface of one end of the lifting platform away from the substrate, and the other end is fixedly connected to the end of the slide plate close to the substrate. A rectangular through groove is provided on one side of the straight cylinder close to the slide plate, and a conductive ring is provided at one end of the slide plate, and the conductive ring of the slide plate passes through the rectangular through groove and is slidably mounted on a section of the mounting rod perpendicular to the horizontal axis. The mounting rod is fixedly mounted on the inner surface of the straight cylinder, and the coil is evenly wound on a section of the mounting rod perpendicular to the horizontal axis. The slide plate is electrically connected to the electromagnet, and the fixed cylinder is fixedly connected to the spray unit.

[0012] Furthermore, the simulation unit also includes a dual-axis motor, a striking ball, a swing rod, a round rod, a semicircular baffle, a testing platform, a magnet group and an electric telescopic rod, the output shaft of the dual-axis motor at one end away from the center console is connected to the striking ball through an elastic rope, the output shaft of the dual-axis motor at one end close to the center console is fixedly connected to one end of the semicircular baffle, the other end of the semicircular baffle is vertically fixedly connected to the round rod, a lifting lug is provided on the round rod, the swing rod is rotatably connected to the round rod by connecting the round rod, the round rod and the swing rod are connected by an elastic rope near the rotating connection, a rectangular groove is provided on the surface of the end of the swing plate away from the base plate, the testing platform is slidably installed in the rectangular groove of the swing plate, the fixed end of the electric telescopic rod is fixedly installed on the inner surface of the rectangular notch of the swing plate, the movable end of the electric telescopic rod is fixedly connected to the testing platform, the swing rod is electrically connected to the electric telescopic rod, and the magnet group is fixedly installed on the surface of the testing platform at one end away from the center console parallel to the horizontal axis.

[0013] After the concrete column to be tested is fixed on the testing platform, the dual-axis motor is started by controlling the central console, so that on the one hand, the hitting ball is driven to rotate under the action of centrifugal force, thereby hitting the slide plate. When the hitting ball contacts the slide plate, the slide plate compresses the telescopic spring after the impact, and at the same time the slide plate slides down along the mounting rod. At this time, the number of turns of the effective coil is reduced, and the current input into the coil by the central console becomes larger. The current flows through the coil and the slide plate, and is finally input to the electromagnet. The electromagnet is energized to generate a magnetism opposite to that of the sliding column. Under the action of repulsion, the lifting platform is moved upward along the telescopic limit cylinder, thereby driving the testing platform to rise. When the hitting ball and the slide plate come into contact, the telescopic spring is compressed after the impact, and the slide plate slides down along the mounting rod. At this time, the number of turns of the effective coil is reduced, and the current input into the coil by the central console becomes larger. The current flows through the coil and the slide plate, and is finally input to the electromagnet. The electromagnet is energized to generate a magnetism opposite to that of the sliding column. Under the action of repulsion, the lifting platform is moved upward along the telescopic limit cylinder, thereby driving the testing platform to rise. When the plate is out of contact, the telescopic spring resets, thereby driving the slide plate to move upward. At this time, the number of effective coil turns increases, and the current received by the electromagnet decreases, so that it moves downward along the telescopic limit cylinder under the action of the concrete column and the lifting platform's own gravity, thereby simulating the longitudinal impact of the ground during an earthquake. When the speed of the dual-axis motor is higher, the impact force generated by the hitting ball is greater, and the distance the slide plate moves downward is greater. The fewer effective coils, the greater the repulsive force generated by the electromagnet, and the greater the distance the lifting platform rises and falls, thereby simulating the longitudinal impact of the ground during earthquakes of different levels, and also facilitating more accurate detection of the maximum value of the seismic resistance of the concrete column.

[0014] When the hitting ball rotates under the action of centrifugal force, when it moves to the bottom, it applies a downward pressure to the left side of the swing plate, causing the swing plate to lose balance, causing the swing plate to stretch the left side of the buffer spring to swing downward around the step platform. When the hitting ball moves to the top, it applies an upward pulling force to the left side of the swing plate, and the buffer spring drives the right side of the swing plate to swing downward around the step platform under the action of its own restoring force. As the hitting ball rotates, the swing plate swings left and right, thereby driving the concrete column to swing synchronously, thus forming a ground shaking action during an earthquake.

[0015] When the dual-axis motor starts, it drives the round rod to rotate, thereby driving the swing rod to rotate synchronously. When the hitting ball squeezes the slide plate to move downward, the effective number of turns decreases, so that the electromagnet gets a larger current to push the lifting platform upward. The swing rod rotates to cut the magnetic flux lines generated by the magnet group below, thereby generating a reverse current on the swing rod. The current is transmitted to the electric telescopic rod through the swing rod, thereby pushing the inspection platform to drive the concrete column to move to the left, causing the swing plate to lose its center of gravity and swing to the lower left synchronously with the swing plate. When the hitting ball leaves the slide plate, the slide plate moves upward, and the effective number of turns increases, thereby obtaining a smaller current for the electromagnet. When the lifting platform moves upward, the swing rod rotates to cut the magnet group above. The magnetic flux lines are cut, thereby generating a positive current on the swing rod. The current is transmitted to the electric telescopic rod through the swing rod, thereby pushing the test platform to drive the concrete column to move to the right, causing the swing plate to lose its center of gravity and swing to the lower right synchronously with the swing plate, thereby simulating the lateral impact action of the ground during an earthquake, making the simulated earthquake action more accurate, and making the detection of the seismic resistance of concrete more accurate. When the speed of the dual-axis motor becomes faster, the swing rod swings more under the action of centrifugal force, thereby generating a larger current when cutting the magnetic flux lines and providing it to the electric telescopic rod. The faster the electric telescopic rod extends, the more accurate the lateral impact action of the ground during an earthquake is simulated, thereby improving the accuracy of seismic resistance detection.

[0016] Furthermore, the spray unit includes a fixed box, a water tank, a drainage pipe, an annular plate and an air supply pipe. The air supply pipe is conductively connected to the air supply port of the fixed cylinder. The air supply pipe is fixedly installed on the outer surface of the annular plate perpendicular to the vertical axis. The annular plate is fixedly installed on the outer surface of the water tank close to the concrete column. One end of the drainage pipe extends into the water tank, and the other end passes through the outer surface of the annular plate perpendicular to the vertical axis and is flush with the outer surface of the annular plate. Multiple groups of water tanks are evenly fixed inside the fixed box, and the fixed box is sleeved on the outer surface of the concrete column node.

[0017] When the lifting platform moves upward, the external gas is sucked into the fixed cylinder through the air suction port under the action of the pressure difference. When the lifting platform moves downward, the sliding column squeezes the gas inside the fixed cylinder and ejects it from the air supply port and sends it into the air supply pipe. The air supply pipe blows the wind out along the outlet of the drainage pipe. At this time, the flow rate at the outlet of the air supply pipe increases and the pressure decreases. Under the action of atmospheric pressure, the sulfuric acid solution in the water tank is pressed out through the drainage pipe, and the sulfuric acid solution is sprayed into mist under the action of the airflow generated when the air supply pipe blows, so as to be evenly sprayed on the surface of the concrete column node, corroding the concrete and accelerating the aging of the concrete. The central control console records the dosage and number of sulfuric acid sprayed each time, so as to continuously observe the concrete columns in different degrees of aging for seismic resistance testing, which is convenient for the subsequent improvement work of the newly made concrete columns and the detection and advance recording of the concrete columns that have been put into use, so as to avoid accidents caused by weakened seismic resistance.

[0018] Furthermore, the end of the coil close to the lifting platform is the line-in terminal, and the end away from the lifting platform is the line-out terminal.

[0019] In order to achieve the goal that when the speed of the hitting ball is faster, the rotation radius is larger, and the striking slide moves downward a longer distance, a larger current can be generated and transmitted to the electromagnet, generating a repulsive force to repel the sliding column, thereby pushing the lifting platform up, simulating the longitudinal shock wave generated by the ground during an earthquake, and improving the accuracy of detection.

[0020] Furthermore, the two magnets of the magnet group on the same vertical axis have opposite magnetic properties, the two magnets of the magnet group have opposite polarities, there are two groups of magnet groups, and multiple groups of slots are provided on the vertical axis of the detection platform, and the magnet group is clamped in the slots.

[0021] In order to detect the longitudinal shock waves caused by earthquakes of different levels, the seismic resistance of the concrete column nodes is tested by changing the distance between the two groups of magnets to avoid the vibration amplitude being too small to cut the magnetic flux lines generated by the upper or lower magnet group, thereby failing to generate current to be transmitted to the electric telescopic rod, thus avoiding the inability to simulate the lateral shock waves during an earthquake and affecting the detection accuracy.

[0022] Furthermore, the initial state of the interior of the fixed cylinder is vacuum, and the sliding column is made of iron.

[0023] In order to enable the gas to be transported under the action of the pressure difference in the fixed cylinder when the lifting platform moves up and down, it is convenient for the spraying unit to evenly spray the sulfuric acid solution on the concrete surface and detect the seismic resistance of the concrete column in the aging state. At the same time, in order to enable the lifting platform to perform lifting movements, the sliding column is made of iron.

[0024] Furthermore, the center console is electrically connected to the dual-axis motor, and the center console is electrically connected to the coil.

[0025] In order to realize automatic control and save manpower, the rotation speed of the dual-axis motor can be accurately controlled, and the ground impact action caused by different levels of earthquakes can be quickly simulated to improve the efficiency and accuracy of concrete column seismic resistance testing.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention simulates the sliding plate in the unit jumping up and down before and after being hit by the hitting ball, changes the number of small turns of the coil, and thus changes the current obtained by the electromagnet, so that the concrete column on the detection platform moves longitudinally, simulating the longitudinal shock wave during an earthquake. The hitting ball drives the swing plate to swing synchronously during the rotation process, thereby simulating the shaking of the ground during an earthquake. The dual-axis motor drives the swing rod to rotate synchronously. When the lifting platform moves upward and downward, the swing rod rotates to cut the magnetic flux lines generated by the upper and lower magnet groups, thereby generating a positive current on the swing rod. The current is sent to the electric telescopic rod to push the detection platform to drive the concrete column to move left and right, causing the swing plate to lose its center of gravity and cooperate with the swing plate to swing synchronously to the lower right, thereby simulating the lateral impact action of the ground during an earthquake, so that the action of simulating an earthquake is more accurate, and the detection of the seismic resistance of concrete is more accurate.

[0028] 2. The present invention transports the gas in the fixed cylinder through the air supply pipe in the spraying unit. The air supply pipe blows the wind out along the outlet of the drainage pipe. At this time, the flow rate of the outlet of the air supply pipe increases and the pressure decreases. Under the action of atmospheric pressure, the sulfuric acid solution in the water tank is pressed out through the drainage pipe, and the sulfuric acid solution is sprayed into mist under the action of the airflow generated by the air supply pipe, so as to be evenly sprayed on the surface of the concrete column node, uniformly corrode the concrete, accelerate the aging of the concrete, and continuously observe the concrete columns in different degrees of aging for seismic resistance testing to avoid accidents caused by weakened seismic resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall appearance structure of a device for detecting the seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0030] Figure 2 This is a schematic diagram of the installation position structure of some simulation units of a device for detecting the seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0031] Figure 3 This is a schematic diagram of the installation position structure of some simulation units of a device for detecting the seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0032] Figure 4 It is a front view structural schematic diagram of a device for detecting seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0033] Figure 5 The invention provides a device for detecting the seismic resistance of a prefabricated concrete column node by simulating vibration. Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0034] Figure 6It is a schematic diagram of the internal structure of a straight tube of a device for detecting the seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0035] Figure 7 This is a schematic diagram of the appearance structure of a slide plate and a telescopic spring of a vibration-simulating assembled concrete column node seismic resistance detection device of the present invention;

[0036] Figure 8 It is a schematic diagram of the installation position structure of the swing rod and the round rod of a device for detecting the seismic resistance of a prefabricated concrete column node simulating vibration according to the present invention;

[0037] Fig. 9 This is a schematic diagram of the internal structure of a fixed box of a device for detecting the seismic resistance of assembled concrete column nodes simulating vibration according to the present invention;

[0038] Fig.10 This is a schematic diagram of the appearance structure of some spraying unit components of a vibration-simulating assembled concrete column node seismic resistance detection device of the present invention.

[0039] In the figure: 1. base plate; 2. center console; 3. simulation unit; 31. fixed cylinder; 32. electromagnet; 33. lifting platform; 34. sliding column; 35. buffer spring; 36. ladder platform; 37. swing plate; 38. support column; 39. telescopic limit cylinder; 310. straight cylinder; 311. telescopic spring; 312. slide plate; 313. coil; 314. mounting rod; 315. dual-axis motor; 316. hitting ball; 317. swing rod; 318. round rod; 319. semicircular baffle; 320. testing platform; 321. magnet group; 322. electric telescopic rod; 4. spray unit; 41. fixed box; 42. water tank; 43. drainage pipe; 44. ring plate; 45. air supply pipe. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example: Figure 1-Figure 10 As shown, the present invention provides a technical solution:

[0042] like Figure 1As shown, a device for detecting the seismic resistance of assembled concrete column nodes with simulated vibration includes a substrate 1, a center console 2, a simulation unit 3 and a spray unit 4. The substrate 1 is placed on a horizontal foundation, the center console 2 is fixedly mounted on the upper surface of the substrate 1 near one end of the horizontal foundation, the simulation unit 3 is fixedly mounted on the upper surface of the substrate 1 near one end of the horizontal foundation, the simulation unit 3 has a function of detecting the seismic resistance of concrete column nodes to different degrees, the simulation unit 3 is connected to the spray unit 4, the simulation unit 3 is electrically connected to the center console 2, the spray unit 4 is mounted on the concrete column node, the spray unit 4 has a function of accelerating the aging of the concrete column, and the spray unit 4 is electrically connected to the center console 2.

[0043] The base plate 1 is used for installing and fixing the center console 2, the simulation unit 3 and the spraying unit 4. The center console 2 is used to control the opening and closing of the simulation unit 3 and the spraying unit 4. The simulation unit 3 is used to simulate vibrations of different degrees to facilitate the seismic resistance detection of the concrete column nodes to be tested. The spraying unit 4 is used to accelerate the aging state of concrete at the concrete column nodes to facilitate the detection of the seismic resistance of the concrete column nodes under the aged state. When the center console 2 starts the simulation unit 3, the simulation unit 3 generates vibrations of different degrees as needed to simulate the ground vibration caused by an earthquake or a roadside truck passing by. The concrete column nodes are sprayed by the spraying unit 4 to detect the seismic resistance of concrete with different aging degrees, which is convenient for early prediction and subsequent improvement work.

[0044] like Figure 1 , 2, 3, 4, 5, 6, and 7, the simulation unit 3 includes a fixed cylinder 31, an electromagnet 32, a lifting platform 33, a sliding column 34, a buffer spring 35, a ladder 36, a swing plate 37, a support column 38, a telescopic limit cylinder 39, a straight cylinder 310, a telescopic spring 311, a slide plate 312, a coil 313 and a mounting rod 314. The fixed cylinder 31 is fixedly mounted on the upper surface of the substrate 1 at one end close to the horizontal foundation, the electromagnet 32 ​​is fixedly mounted on the inner surface of the fixed cylinder 31 at one end close to the substrate 1, and the lifting platform 33 is fixedly mounted on the surface of the end away from the substrate 1. The center of the surface is fixedly connected to the ladder platform 36. A sliding column 34 is fixedly installed on the surface of the lifting platform 33 near the substrate 1. The sliding column 34 is slidably installed inside the fixed cylinder 31. A sealing ring with the same inner diameter as the fixed cylinder 31 is arranged at the end of the sliding column 34 near the substrate 1. An air suction port and an air supply port are opened on the side wall of the fixed cylinder 31. Both the air suction port and the air supply port are provided with a one-way valve. The end of the swing plate 37 near the substrate 1 is rotatably connected to the ladder platform 36 through a connecting rod. One end of the buffer spring 35 is fixedly connected to the surface of the end of the swing plate 37 near the substrate 1. The other end is fixedly connected to the surface of the end of the lifting platform 33 away from the substrate 1. One end of the support column 38 is fixedly installed on the upper surface of the substrate 1, and the other end passes through the lifting platform 33 and is fixedly connected to the fixed end of the dual-axis motor 315. The fixed end of the telescopic limit cylinder 39 is fixedly installed on the upper surface of the substrate 1, and the movable end of the telescopic limit cylinder 39 is fixedly installed on the surface of the end of the lifting platform 33 close to the substrate 1. The straight cylinder 310 is fixedly installed on the surface of the end of the lifting platform 33 away from the substrate 1. One end of the telescopic spring 311 is fixedly connected to the surface of the end of the lifting platform 33 away from the substrate 1. The other end is fixedly connected to the end of the slide plate 312 close to the substrate 1. A rectangular through groove is provided on the side of the straight cylinder 310 close to the slide plate 312. A conductive ring is provided at one end of the slide plate 312. The conductive ring of the slide plate 312 passes through the rectangular through groove and is slidably installed on a section of the mounting rod 314 perpendicular to the horizontal axis. The mounting rod 314 is fixedly installed on the inner surface of the straight cylinder 310. The coil 313 is evenly wound on a section of the mounting rod 314 perpendicular to the horizontal axis. The slide plate 312 is electrically connected to the electromagnet 32, and the fixed cylinder 31 is fixedly connected to the spray unit 4.

[0045] like Figure 1 , 2, 3, 4, and 8, the simulation unit 3 also includes a dual-axis motor 315, a striking ball 316, a swing rod 317, a round rod 318, a semicircular baffle 319, a detection table 320, a magnet group 321, and an electric telescopic rod 322. The output shaft of the dual-axis motor 315 at one end away from the center console 2 is connected to the striking ball 316 through an elastic rope, and the output shaft of the dual-axis motor 315 at one end close to the center console 2 is fixedly connected to one end of the semicircular baffle 319, and the other end of the semicircular baffle 319 is vertically fixedly connected to the round rod 318. The round rod 318 is provided with a lifting ear, and the swing rod 317 is connected to the round rod 318 through a connecting round rod. The rod is rotatably connected to the round rod 318, and the round rod 318 is connected to the swing rod 317 near the rotation connection through an elastic rope. A rectangular groove is provided on the surface of the swing plate 37 at one end away from the base plate 1, and the detection platform 320 is slidably installed in the rectangular groove of the swing plate 37. The fixed end of the electric telescopic rod 322 is fixedly installed on the inner surface of the rectangular groove of the swing plate 37, and the movable end of the electric telescopic rod 322 is fixedly connected to the detection platform 320. The swing rod 317 is electrically connected to the electric telescopic rod 322, and the magnet group 321 is fixedly installed on the surface of the end of the detection platform 320 away from the center console 2 parallel to the horizontal axis.

[0046] After the concrete column to be tested is fixed on the testing platform 320, the dual-axis motor 315 is started by controlling the central control platform 2, so that on the one hand, the striking ball 316 is driven to rotate under the action of centrifugal force, thereby hitting the slide plate 312. When the striking ball 316 contacts the slide plate 312, the slide plate 312 is compressed by the telescopic spring 311 after being hit, and the slide plate 312 slides downward along the mounting rod 314. At this time, the number of effective coils 313 is reduced, and the current passed into the coil 313 by the central control platform 2 becomes larger. The current passes through the coil 313 and flows through the slide plate 312, and is finally input to the electromagnet 32. The electromagnet 32 ​​is energized to generate a magnetism opposite to that of the sliding column 34. Under the action of repulsive force, the lifting platform 33 is moved upward along the telescopic limit cylinder 39, thereby driving the testing platform 32. 0 rises, when the striking ball 316 loses contact with the slide plate 312, the telescopic spring 311 is reset, thereby driving the slide plate 312 to move upward, at this time, the number of effective coils 313 turns increases, and the current received by the electromagnet 32 ​​decreases, so that the concrete column and the lifting platform 33 move downward along the telescopic limit cylinder 39 under the action of their own gravity, thereby simulating the longitudinal impact action of the ground during an earthquake, when the speed of the dual-axis motor 315 is higher, the greater the striking force generated by the striking ball 316, so that the distance the slide plate 312 moves downward is greater, the fewer effective coils 313 are, the greater the repulsive force generated by the electromagnet 32, and the greater the lifting distance of the lifting platform 33, thereby simulating the longitudinal impact action of the ground during earthquakes of different levels, and also facilitating more accurate detection of the maximum value of the seismic resistance of the concrete column.

[0047] When the striking ball 316 rotates under the action of centrifugal force, when the striking ball 316 moves to the bottom, it applies a downward pressure to the left side of the swing plate 37, and the swing plate 37 loses balance, causing the swing plate 37 to stretch the left side of the buffer spring 35 to swing downward around the step 36. When the striking ball 316 moves to the top, it applies an upward pulling force to the left side of the swing plate 37, and the buffer spring 35 drives the right side of the swing plate 37 to swing downward around the step 36 under the action of its own restoring force. As the striking ball 316 rotates, the swing plate 37 swings left and right, thereby driving the concrete column to swing synchronously, thereby forming a ground shaking action during an earthquake.

[0048] When the dual-axis motor 315 is started, the round rod 318 is driven to rotate, thereby driving the swing rod 317 to rotate synchronously. When the hitting ball 316 squeezes the slide plate 312 to move downward, the effective number of turns is reduced, so that the electromagnet 32 ​​obtains a larger current to push the lifting platform 33 to rise upward. The swing rod 317 rotates to cut the magnetic flux lines generated by the magnet group 321 below, thereby generating a reverse current on the swing rod 317. The current is transmitted to the electric telescopic rod 322 through the swing rod 317, thereby pushing the detection platform 320 to drive the concrete column to move to the left, causing the swing plate 37 to lose its center of gravity and swing to the lower left synchronously with the swing plate 37. When the hitting ball 316 breaks away from the slide plate 312, the slide plate 312 moves upward, and the effective number of turns increases, thereby making the electromagnet 32 ​​obtain a smaller current. When the lifting platform 33 moves upward, the swing rod 31 The rotating cutting cuts the magnetic flux lines generated by the upper magnet group 321, thereby generating a positive current on the swing rod 317. The current is transmitted to the electric telescopic rod 322 through the swing rod 317, thereby pushing the detection platform 320 to drive the concrete column to move to the right, causing the swing plate 37 to lose its center of gravity, and cooperate with the swing plate 37 to swing to the lower right synchronously, thereby simulating the lateral impact action of the ground during an earthquake, thereby making the action during the simulated earthquake more accurate, and making the detection of the seismic resistance of the concrete more accurate. When the speed of the dual-axis motor 315 becomes faster, the swing rod 317 swings more under the action of centrifugal force, thereby generating a larger current when cutting the magnetic flux lines and providing it to the electric telescopic rod 322. The faster the electric telescopic rod 322 extends, the more accurate the lateral impact action of the ground during an earthquake is simulated, thereby improving the accuracy of the seismic resistance detection.

[0049] like Fig. 9 , 10As shown, the spray unit 4 includes a fixed box 41, a water tank 42, a drainage pipe 43, an annular plate 44 and an air supply pipe 45. The air supply pipe 45 is conductively connected to the air supply port of the fixed cylinder 31. The air supply pipe 45 is fixedly installed on the outer surface of the annular plate 44 perpendicular to the vertical axis. The annular plate 44 is fixedly installed on the outer surface of the water tank 42 close to the concrete column. One end of the drainage pipe 43 extends into the water tank 42, and the other end passes through the outer surface of the annular plate 44 perpendicular to the vertical axis and is flush with the outer surface of the annular plate 44. Multiple groups of water tanks 42 are evenly fixedly installed inside the fixed box 41, and the fixed box 41 is sleeved on the outer surface of the concrete column node.

[0050] When the lifting platform 33 moves upward, the external gas is sucked into the fixed cylinder 31 through the air suction port under the action of the pressure difference. When the lifting platform 33 moves downward, the sliding column 34 squeezes the gas inside the fixed cylinder 31 and ejects it from the air supply port and sends it into the air supply pipe 45. The air supply pipe 45 blows the air out along the pipe mouth of the drainage pipe 43. At this time, the flow rate at the pipe mouth of the air supply pipe 45 increases and the pressure decreases. Under the action of atmospheric pressure, the sulfuric acid solution in the water tank 42 is pressed out through the drainage pipe 43, and the sulfuric acid solution is sprayed into mist under the action of the air flow generated when the air supply pipe 45 blows air, so as to be evenly sprayed on the surface of the concrete column node, corrode the concrete, and accelerate the aging of the concrete. The central control console 2 records the dosage and number of sulfuric acid sprayed each time, so as to continuously observe the concrete columns in different degrees of aging for seismic resistance testing, which is convenient for the subsequent improvement work of the newly made concrete columns and the detection and advance recording of the concrete columns that have been put into use, so as to avoid accidents caused by weakened seismic resistance.

[0051] like Figure 6 As shown, the end of the coil 313 close to the lifting platform 33 is the incoming line end, and the end away from the lifting platform 33 is the outgoing line end.

[0052] In order to achieve that when the speed of the striking ball 316 is faster, the rotation radius is larger, and the striking slide plate 312 moves downward a longer distance, a larger current can be generated and transmitted to the electromagnet 32, generating a repulsive force to repel the sliding column 34, thereby pushing the lifting platform 33 to rise, simulating the longitudinal shock wave generated by the ground during an earthquake, and improving the accuracy of detection.

[0053] like Figure 3 As shown, the two magnets of the magnet group 321 on the same vertical axis have opposite magnetic properties, and the two magnets of the magnet group 321 have opposite polarities. There are two groups of magnet groups 321, and multiple groups of slots are set on the vertical axis of the detection platform 320, and the magnet groups 321 are clamped in the slots.

[0054] In order to detect the seismic resistance of the concrete column nodes by detecting the longitudinal shock waves caused by earthquakes of different levels, the distance between the two groups of magnet groups 321 is changed to avoid the vibration amplitude being too small to cut the magnetic flux lines generated by the upper or lower magnet group 321, thereby failing to generate current to be transmitted to the electric telescopic rod 322, thereby avoiding the failure to simulate the lateral shock waves during the earthquake and affecting the detection accuracy.

[0055] like Figure 5 As shown, the interior of the fixed cylinder 31 is initially in a vacuum state, and the sliding column 34 is made of iron.

[0056] In order to enable the gas to be transported under the action of the pressure difference inside the fixed cylinder 31 when the lifting platform 33 is lifted and lowered, it is convenient for the spraying unit 4 to evenly spray the sulfuric acid solution on the concrete surface and detect the seismic resistance of the concrete column in the aging state. At the same time, in order to enable the lifting platform 33 to perform lifting actions, the sliding column 34 is made of iron.

[0057] like Figure 1 As shown, the central console 2 is electrically connected to the dual-axis motor 315 , and the central console 2 is electrically connected to the coil 313 .

[0058] In order to realize automatic control and save manpower, the rotation speed of the dual-axis motor 315 can be accurately controlled to quickly simulate the ground impact caused by different levels of earthquakes, thereby improving the efficiency and accuracy of concrete column seismic resistance testing.

[0059] Working principle of the present invention:

[0060] After the concrete column to be tested is fixed on the testing platform 320, the dual-axis motor 315 is started by controlling the central control platform 2, so that on the one hand, the striking ball 316 is driven to rotate under the action of centrifugal force, thereby hitting the slide plate 312. When the striking ball 316 contacts the slide plate 312, the slide plate 312 is compressed by the telescopic spring 311 after being hit, and the slide plate 312 slides downward along the mounting rod 314. At this time, the number of effective coils 313 is reduced, and the current passed into the coil 313 by the central control platform 2 becomes larger. The current passes through the coil 313 and flows through the slide plate 312, and is finally input to the electromagnet 32. The electromagnet 32 ​​is energized to generate a magnetism opposite to that of the sliding column 34. Under the action of repulsive force, the lifting platform 33 is moved upward along the telescopic limit cylinder 39, thereby driving the testing platform 32. 0 rises, when the striking ball 316 loses contact with the slide plate 312, the telescopic spring 311 is reset, thereby driving the slide plate 312 to move upward, at this time, the number of effective coils 313 turns increases, and the current received by the electromagnet 32 ​​decreases, so that the concrete column and the lifting platform 33 move downward along the telescopic limit cylinder 39 under the action of their own gravity, thereby simulating the longitudinal impact action of the ground during an earthquake, when the speed of the dual-axis motor 315 is higher, the greater the striking force generated by the striking ball 316, so that the distance the slide plate 312 moves downward is greater, the fewer effective coils 313 are, the greater the repulsive force generated by the electromagnet 32, and the greater the lifting distance of the lifting platform 33, thereby simulating the longitudinal impact action of the ground during earthquakes of different levels, and also facilitating more accurate detection of the maximum value of the seismic resistance of the concrete column.

[0061] When the striking ball 316 rotates under the action of centrifugal force, when the striking ball 316 moves to the bottom, it applies a downward pressure to the left side of the swing plate 37, and the swing plate 37 loses balance, causing the swing plate 37 to stretch the left side of the buffer spring 35 to swing downward around the step 36. When the striking ball 316 moves to the top, it applies an upward pulling force to the left side of the swing plate 37, and the buffer spring 35 drives the right side of the swing plate 37 to swing downward around the step 36 under the action of its own restoring force. As the striking ball 316 rotates, the swing plate 37 swings left and right, thereby driving the concrete column to swing synchronously, thereby forming a ground shaking action during an earthquake.

[0062] When the dual-axis motor 315 is started, the round rod 318 is driven to rotate, thereby driving the swing rod 317 to rotate synchronously. When the hitting ball 316 squeezes the slide plate 312 to move downward, the effective number of turns is reduced, so that the electromagnet 32 ​​obtains a larger current to push the lifting platform 33 to rise upward. The swing rod 317 rotates to cut the magnetic flux lines generated by the magnet group 321 below, thereby generating a reverse current on the swing rod 317. The current is transmitted to the electric telescopic rod 322 through the swing rod 317, thereby pushing the detection platform 320 to drive the concrete column to move to the left, causing the swing plate 37 to lose its center of gravity and swing to the lower left synchronously with the swing plate 37. When the hitting ball 316 breaks away from the slide plate 312, the slide plate 312 moves upward, and the effective number of turns increases, thereby making the electromagnet 32 ​​obtain a smaller current. When the lifting platform 33 moves upward, the swing rod 31 The rotating cutting cuts the magnetic flux lines generated by the upper magnet group 321, thereby generating a positive current on the swing rod 317. The current is transmitted to the electric telescopic rod 322 through the swing rod 317, thereby pushing the detection platform 320 to drive the concrete column to move to the right, causing the swing plate 37 to lose its center of gravity, and cooperate with the swing plate 37 to swing to the lower right synchronously, thereby simulating the lateral impact action of the ground during an earthquake, thereby making the action during the simulated earthquake more accurate, and making the detection of the seismic resistance of the concrete more accurate. When the speed of the dual-axis motor 315 becomes faster, the swing rod 317 swings more under the action of centrifugal force, thereby generating a larger current when cutting the magnetic flux lines and providing it to the electric telescopic rod 322. The faster the electric telescopic rod 322 extends, the more accurate the lateral impact action of the ground during an earthquake is simulated, thereby improving the accuracy of the seismic resistance detection.

[0063] When the lifting platform 33 moves upward, the external gas is sucked into the fixed cylinder 31 through the air suction port under the action of the pressure difference. When the lifting platform 33 moves downward, the sliding column 34 squeezes the gas inside the fixed cylinder 31 and ejects it from the air supply port and sends it into the air supply pipe 45. The air supply pipe 45 blows the air out along the pipe mouth of the drainage pipe 43. At this time, the flow rate at the pipe mouth of the air supply pipe 45 increases and the pressure decreases. Under the action of atmospheric pressure, the sulfuric acid solution in the water tank 42 is pressed out through the drainage pipe 43, and the sulfuric acid solution is sprayed into mist under the action of the air flow generated when the air supply pipe 45 blows air, so as to be evenly sprayed on the surface of the concrete column node, corrode the concrete, and accelerate the aging of the concrete. The central control console 2 records the dosage and number of sulfuric acid sprayed each time, so as to continuously observe the concrete columns in different degrees of aging for seismic resistance testing, which is convenient for the subsequent improvement work of the newly made concrete columns and the detection and advance recording of the concrete columns that have been put into use, so as to avoid accidents caused by weakened seismic resistance.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vibration-simulating assembled concrete column node seismic resistance detection device, Features: The device for detecting the seismic resistance of assembled concrete column nodes for simulating vibration comprises a base plate (1), a center console (2), a simulation unit (3) and a spray unit (4); the base plate (1) is placed on a horizontal foundation; the center console (2) is fixedly mounted on the upper surface of one end of the base plate (1) close to the horizontal foundation; the simulation unit (3) is fixedly mounted on the upper surface of one end of the base plate (1) close to the horizontal foundation; the simulation unit (3) has the function of detecting the seismic resistance of concrete column nodes to different degrees; the simulation unit (3) is connected to the spray unit (4); the simulation unit (3) is electrically connected to the center console (2); the spray unit (4) is mounted on the concrete column node; the spray unit (4) has the function of accelerating the aging of the concrete column; and the spray unit (4) is electrically connected to the center console (2).

2. According to the device for detecting the seismic resistance of assembled concrete column nodes by simulating vibration according to claim 1, Features: The simulation unit (3) comprises a fixed cylinder (31), an electromagnet (32), a lifting platform (33), a sliding column (34), a buffer spring (35), a ladder platform (36), a swing plate (37), a supporting column (38), a telescopic limit cylinder (39), a straight cylinder (310), a telescopic spring (311), a sliding plate (312), a coil (313) and a mounting rod (314); the fixed cylinder (31) is fixedly mounted on the upper surface of one end of the substrate (1) close to the horizontal foundation; the electromagnet (32) is fixedly mounted on the inner surface of one end of the fixed cylinder (31) close to the substrate (1); the lifting platform (33) is located at the center of the surface of one end away from the substrate (1) and the inner surface of the fixed cylinder (31) is located at the center of the surface of the one end of the lifting platform (33) close to the horizontal foundation; The ladder platform (36) is fixedly connected, a sliding column (34) is fixedly installed on the surface of one end of the lifting platform (33) close to the base plate (1), and the sliding column (34) is slidably installed inside the fixed cylinder (31). The sliding column (34) is provided with a sealing ring with the same inner diameter as the fixed cylinder (31) at one end close to the base plate (1), and the side wall of the fixed cylinder (31) is provided with an air suction port and an air supply port, and a one-way valve is provided in the air suction port and the air supply port. The swing plate (37) is rotatably connected to the ladder platform (36) at one end close to the base plate (1) through a connecting rod, and one end of the buffer spring (35) is fixedly connected to the surface of one end of the swing plate (37) close to the base plate (1), and the other end The lifting platform (33) is fixedly connected to the surface of one end thereof which is away from the substrate (1); one end of the support column (38) is fixedly mounted on the upper surface of the substrate (1); the other end thereof passes through the lifting platform (33) and is fixedly connected to the fixed end of the dual-axis motor (315); the fixed end of the telescopic limit cylinder (39) is fixedly mounted on the upper surface of the substrate (1); the movable end of the telescopic limit cylinder (39) is fixedly mounted on the surface of one end of the lifting platform (33) which is close to the substrate (1); the straight cylinder (310) is fixedly mounted on the surface of one end of the lifting platform (33) which is away from the substrate (1); one end of the telescopic spring (311) is fixedly connected to the surface of one end of the lifting platform (33) which is away from the substrate (1); the other end thereof is fixedly mounted on the surface of one end of the lifting platform (33) which is away from the substrate (1); One end is fixedly connected to an end of a slide plate (312) close to the base plate (1); a rectangular through slot is provided on one side of the straight cylinder (310) close to the slide plate (312); a conductive ring is provided at one end of the slide plate (312); the conductive ring of the slide plate (312) passes through the rectangular through slot and is slidably mounted on a section of a mounting rod (314) perpendicular to the horizontal axis; the mounting rod (314) is fixedly mounted on the inner surface of the straight cylinder (310); the coil (313) is evenly wound on a section of the mounting rod (314) perpendicular to the horizontal axis; the slide plate (312) is electrically connected to the electromagnet (32); and the fixed cylinder (31) is fixedly connected to the spray unit (4).

3. The device for detecting the seismic resistance of assembled concrete column nodes by simulating vibration according to claim 2, Features: The simulation unit (3) further comprises a dual-axis motor (315), a striking ball (316), a swing rod (317), a round rod (318), a semicircular baffle (319), a detection platform (320), a magnet group (321) and an electric telescopic rod (322); the output shaft of one end of the dual-axis motor (315) away from the central control panel (2) is connected to the striking ball (316) through an elastic rope; the output shaft of one end of the dual-axis motor (315) close to the central control panel (2) is fixedly connected to one end of the semicircular baffle (319); the other end of the semicircular baffle (319) is vertically fixedly connected to the round rod (318); a lifting lug is provided on the round rod (318); the swing rod (317) is connected to the round rod by a lifting lug The rod (318) is rotatably connected, the round rod (318) and the swing rod (317) are connected by an elastic rope near the rotation connection, a rectangular groove is opened on the surface of the end of the swing plate (37) away from the base plate (1), the detection platform (320) is slidably installed in the rectangular groove of the swing plate (37), the fixed end of the electric telescopic rod (322) is fixedly installed on the inner surface of the rectangular groove of the swing plate (37), the movable end of the electric telescopic rod (322) is fixedly connected to the detection platform (320), the swing rod (317) is electrically connected to the electric telescopic rod (322), and the magnet group (321) is fixedly installed on the surface of the end of the detection platform (320) away from the center console (2) parallel to the horizontal axis.

4. The device for detecting seismic resistance of assembled concrete column nodes by simulating vibration according to claim 2, Features: The spray unit (4) comprises a fixed box (41), a water tank (42), a drainage pipe (43), an annular plate (44) and an air supply pipe (45); the air supply pipe (45) is conductively connected to the air supply port of the fixed cylinder (31); the air supply pipe (45) is fixedly mounted on the outer surface of the annular plate (44) perpendicular to the vertical axis; the annular plate (44) is fixedly mounted on the outer surface of the water tank (42) close to the concrete column; one end of the drainage pipe (43) extends into the water tank (42); the other end passes through the outer surface of the annular plate (44) perpendicular to the vertical axis and is flush with the outer surface of the annular plate (44); a plurality of groups of water tanks (42) are evenly fixedly mounted inside the fixed box (41); and the fixed box (41) is sleeved on the outer surface of the concrete column node.

5. The device for detecting seismic resistance of assembled concrete column nodes by simulating vibration according to claim 1, Features: The end of the coil (313) close to the lifting platform (33) is the line inlet end, and the end away from the lifting platform (33) is the line outlet end.

6. The device for detecting seismic resistance of assembled concrete column nodes by simulating vibration according to claim 3, Features: The two magnets of the magnet group (321) on the same vertical axis have opposite magnetic properties, the two magnets of the magnet group (321) have opposite polarities, there are two groups of magnet groups (321), and a plurality of groups of slots are arranged on the vertical axis of the detection platform (320), and the magnet group (321) is clamped in the slots.

7. The device for detecting seismic resistance of assembled concrete column nodes by simulating vibration according to claim 2, Features: The interior of the fixed cylinder (31) is initially in a vacuum state, and the sliding column (34) is made of iron.

8. The device for detecting seismic resistance of assembled concrete column nodes by simulating vibration according to claim 1, Features: The central console (2) is electrically connected to the dual-axis motor (315), and the central console (2) is electrically connected to the coil (313).

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