CN116564154A - High strain test simulation impact teaching equipment - Google Patents
High strain test simulation impact teaching equipment Download PDFInfo
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- CN116564154A CN116564154A CN202310505817.3A CN202310505817A CN116564154A CN 116564154 A CN116564154 A CN 116564154A CN 202310505817 A CN202310505817 A CN 202310505817A CN 116564154 A CN116564154 A CN 116564154A
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- 229910000828 alnico Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/04—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of buildings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
Abstract
The invention relates to a high strain test simulation impact teaching device, comprising: the model pile mounting seat enables the center line of the model pile and the gravity line to be kept in a superposed state, and provides side resistance and supporting force for the model pile; the model pile is used as a compression-resistant carrier to receive impact force from top to bottom, and a monitoring component for collecting stress wave information generated by testing is arranged on the side wall of the pile body; and the impact assembly is positioned above the model pile and is provided with an upward lifting accumulated potential state and a downward falling impact state and is used for applying impact force to the model pile. According to the method, an operation scene can be provided for a high-strain test of the foundation pile by a learner, so that the difficult problems of learning and slow hand-up of a new learner are solved, the model pile is kept in a vertical state through the model pile mounting seat, the stability of the direction of the model pile is ensured, the impact component is used for applying impact force to the model pile, the model pile mounting seat can prevent the model pile from shifting under the action of the impact force, the model pile is ensured to be subjected to forward linear impact of the impact component, and the accuracy of stress wave test is ensured.
Description
Technical Field
The invention relates to the field of operation teaching equipment, in particular to high-strain test simulation impact teaching equipment.
Background
The high strain method is to apply a vertical transient impact load to the pile top by a hammering system, the force acting on the pile top is close to the actual stress level of the pile, so that the pile body generates obvious acceleration and inertia force, and the method is a method for detecting the bearing force of the foundation pile by using power which can enable permanent deformation (or larger dynamic displacement) to be generated between pile soil.
At present, the teaching in this aspect mostly stays in theoretical teaching, no relevant teaching equipment is provided for the actual operation of students, the students can only learn a little in the actual test scene, because the actual high strain detection process involves more assembly components, such as a crane, a guide frame, a heavy hammer, a hammer pad, a foundation pile, a pile Zhou Yantu, a sensor and the like, the required test and the related parameters, such as hammer weight, measuring point pile length, soil-entering pile length, pile diameter, pile body density, elastic wave velocity, average wave velocity, pile end damping coefficient, hammer drop distance, penetration degree and the like, are more complex in the faced analysis waveform, and based on the above reasons, the high strain method has a certain difficulty for the learning and the upper hand of new students, so that a great deal of time is usually required for cultivating the skilled operated students.
For the above reasons, it is necessary to provide a high strain test simulation impact teaching apparatus suitable for operation and learning by a learner.
Disclosure of Invention
In order to solve the problems, the invention provides high-strain test simulation impact teaching equipment which can provide an operation scene for a learner to simulate foundation pile high-strain test, thereby solving the difficult problems of learning and slow hand rising of a new learner.
The technical scheme adopted by the invention is that the high strain test simulation impact teaching equipment comprises:
the model pile mounting seat enables the center line of the model pile and the gravity line to be kept in a superposed state, and provides side resistance and supporting force for the model pile;
the model pile is used as a compression-resistant carrier to receive impact force from top to bottom, and a monitoring component for collecting stress wave information generated by testing is arranged on the side wall of the pile body;
and the impact assembly is positioned above the model pile and is provided with an upward lifting accumulated potential state and a downward falling impact state and is used for applying impact force to the model pile.
Preferably, the model pile mounting seat is provided with a mounting groove which is tightly matched with the model pile, and the model pile mounting seat is fixed on the ground plane during testing.
Preferably, a locking bolt is installed on the circumferential side of the model pile installation seat, and the model pile and the locking bolt are tightly matched to be in a fixed state or matched between the locking bolt and the model pile is in a free state by rotating the locking bolt, so that the model pile meets two simulation working conditions.
Preferably, the impact assembly comprises an upper impact part and a lower impact part arranged at the lower end of the upper impact part, when the upper impact part lifts the lower impact part, the lower impact part and the top end of the model pile have an impact distance, and when the upper impact part and the lower impact part freely fall, the impact force of the impact assembly is intensively impacted on the top of the model pile through the lower impact part.
Preferably, the side wall of the upper impact part is connected with at least two balance bars, and the at least two balance bars are arranged in a divergent mode.
Preferably, a guide rod is vertically installed at the top of the model pile, the central line of the guide rod coincides with that of the model pile, the guide rod upwards passes through the central shaft hole of the impact assembly, and the impact assembly is in sliding fit with the guide rod.
Preferably, at least one of the following connection modes is adopted between the guide rod and the model pile: welding, threaded connection, clamping connection, mechanical connection and embedded connection.
Preferably, the impact assembly is connected with a lifting system, the impact assembly rises directionally under the action of the lifting system, and the impact assembly does free falling motion when the lifting system is separated from the impact assembly.
Preferably, the model pile mounting seat is provided with at least one of the following limiting matters: soil, felt, sealing rubber rings, paper, cotton fibers and foam cotton.
Preferably, the model pile is made of at least one of the following materials: plastic, metal, concrete, wood.
Compared with the prior art, the invention has the following beneficial effects:
according to the high-strain test simulation impact teaching equipment, the structural stability and the flexibility coexist, the model pile is kept in a vertical state through the model pile mounting seat, the stability of the direction of the model pile is ensured, the impact assembly is used for applying impact force to the model pile, the model pile mounting seat can prevent the model pile from shifting under the action of the impact force, the model pile is ensured to be subjected to forward linear impact of the impact assembly, the accuracy of stress wave test is ensured, during the test, the impact assembly is firstly moved upwards to a designated height and then falls freely until the top of the model pile is impacted, the generated stress wave is downwards diffused in the model pile, and is rebounded upwards to be diffused after reaching the bottom of the model pile, and finally the monitoring assembly arranged on the side wall of the pile body of the side part of the model pile is used for collecting information of the two stress waves.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of a high strain test impact simulation teaching apparatus according to the present invention;
FIG. 2 is a schematic diagram II of a first embodiment of a high strain test impact simulation teaching apparatus according to the present invention;
FIG. 3 is a diagram showing the use state of the high strain test simulation impact teaching device according to the first embodiment;
FIG. 4 is a schematic structural diagram of an impact assembly of a high strain test simulation impact teaching apparatus according to the first embodiment;
fig. 5 is a schematic structural diagram of a model pile mounting seat of a high strain test simulation impact teaching device according to the first embodiment;
FIG. 6 is a schematic structural diagram of a high strain test impact simulation teaching device according to a second embodiment;
fig. 7 is a schematic structural diagram of a model pile mounting seat of a high strain test simulation impact teaching device according to a second embodiment;
fig. 8 is a use state diagram of the high strain test simulation impact teaching device according to the third embodiment.
Reference numerals illustrate: 1. a model pile mounting seat; 11. a threaded hole; 2. model piles; 3. a monitoring component; 4. an impact assembly; 41. an upper impact portion; 42. a lower impact portion; 43. a balance bar; 5. a lifting system; 6. a locking bolt; 7. a guide rod.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1-5, the invention provides high-strain test simulation impact teaching equipment, which comprises a model pile mounting seat 1, a model pile 2, an impact assembly 4 and a monitoring assembly 3, wherein a mounting groove tightly matched with the bottom of the model pile 2 is formed in the top of the model pile mounting seat 1, and the model pile mounting seat 1 is used for being fixed on the ground. In this embodiment, the bottom of the model pile mounting seat 1 is a bottom plate, and the bottom plate is fixedly mounted on the ground through welding or detachably mounted on the ground through bolts, and the flexibility is high according to whether the teaching equipment needs to be moved or not. The height of the model pile mounting seat 1 is H, and H is more than or equal to 10cm.
The model pile 2 is used as a compression-resistant carrier to receive impact force from top to bottom, and a monitoring component 3 for collecting stress wave information generated by testing is arranged on the side wall of the pile body. The model piles 2 may be circular columns, square columns, polygonal columns, roman columns or irregular columns. The bottom of the model pile 2 is arranged in a mounting groove at the top of the model pile mounting seat 1, so that the central line of the model pile 2 and the gravity line are kept in a superposed state, and the model pile mounting seat 1 provides side resistance and supporting force for the model pile 2. In this embodiment, a plurality of threaded holes 11 are formed in at least two sides of the base 1, each threaded hole 11 is configured to cooperate with a locking bolt 6, the locking bolt 6 passes through the threaded hole 11, and the locking bolt 6 is screwed to enable the model pile 2 and the locking bolt 6 to be tightly matched in a fixed state or unscrewed to enable the locking bolt 6 to be matched with the model pile 2 in a free state, so that the model pile 2 meets two simulation conditions. When the model pile 2 is in a fixed state, the model pile can be used for simulating the working condition of the fixed model pile 2, and when the model pile 2 is in a free state, the model pile can be used for simulating the working condition of the free end of the model pile 2.
In addition, in order to further improve the firm degree of model stake 2 on model stake mount pad 1, consequently can also be in each side of model stake mount pad 1 sets up screw hole 11, through a plurality of each side of model stake mount pad 1 screw hole 11 and a plurality of the bolt one-to-one cooperation forms spacingly in model stake 2 bottom week side model stake 2 when being in the fixed state, can more firmly fix model stake 2 prevents model stake 2 appears rocking, ensures that the stress wave that the striking produced can not change because model stake 2 skew or rock and lead to taking place for each test, is favorable to improving the detection accuracy of monitoring module 3.
The impact assembly 4 is located above the model pile 1, and has an upward-lifting accumulated potential state and a downward-falling impact state, and is used for applying impact force to the model pile 2. Because the detected stress wave information is affected by the impact area, the smaller the impact area is, the more concentrated the generated stress wave is, the more accurate and clear the monitoring component 3 collects the generated stress wave information, in order to make the generated stress wave more concentrated, in this embodiment, the impact component 4 includes an upper impact portion 41 and a lower impact portion 42 disposed at the lower end of the upper impact portion 41, when the upper impact portion 41 lifts the lower impact portion 42, the lower impact portion 42 has an impact distance with the top end of the model pile 2, and when the upper impact portion 41 and the lower impact portion 42 are free to fall, the impact force of the impact component 4 is concentrated to impact the top of the model pile 2 through the lower impact portion 42.
In detail, the impact assembly 4 may be lifted manually or electrically so that the lower impact portion 42 is spaced from the top end of the model pile 2. Referring in detail to fig. 3, in use, the impact assembly 4 is connected with a lifting system 5, the impact assembly 4 is lifted up in a directional manner by the lifting system 5, and when the lifting system 5 is separated from the impact assembly 4, the impact assembly 4 is free to fall. Referring to fig. 4, in this embodiment, the side walls of the upper impact portion 41 are connected with two balance bars 43, two balance bars 42 are symmetrically disposed with the upper impact portion 41 as a center, and in other embodiments, three, four or more balance bars 43 may be disposed, and each balance bar 43 is uniformly disposed with the upper impact portion 41 as a center in a divergent manner. The lifting system 5 is connected to the balance bar 43.
Referring to fig. 3, in this embodiment, the balance bar 43 is provided with a hanging ring, the lifting system 5 includes a lifting block, two ropes are connected to the lower end of the lifting block, the tail ends of the ropes are respectively connected with a release hook, and the release hooks are in snap connection with the hanging ring, so that the upper impact portion 41 is connected with the lifting system, the lifting block is connected with a lifting rope, the lifting rope can be directly connected with a lifting machine, or can be wound around a fixed pulley, and the tail ends of the lifting rope can be manually pulled or pulled by connecting an electric winding machine. The impact assembly 4 is pulled up to a certain height under the traction of the lifting system 5, then the release hook is opened to separate the release hook from the balance rod 43, the impact assembly 4 freely falls down, the falling position of the impact assembly 4 is ensured to be consistent during each test, and accordingly the stress wave generated by each impact is ensured to be consistent.
The monitoring component 3 is arranged at the side part of the model pile 2 and is used for collecting stress wave information generated when the impact component 4 impacts the model pile 2. The monitoring assembly 3 comprises a stress sensor, and the stress sensor is arranged at the side part of the model pile 2 and is used for detecting stress parameters of the stress wave in a sampling interval. Specifically, the stress sensor may be disposed at a side length twice as long as the top surface of the model pile 2, the top surface of the model pile 2 is square, and the side length is equal to the side length of the top surface of the model pile 2. In addition, the material of the sensing element of the stress sensor may be a material commonly used by those skilled in the art, such as ceramics, diffused silicon, sapphire, etc., and is not limited to the material described in the specification.
In order to detect acceleration parameters, in this embodiment, the monitoring assembly 3 further includes an acceleration sensor, where the acceleration sensor is disposed at a side portion of the model pile 2 and is disposed at the same height relative to the stress sensor, so as to detect acceleration parameters of the stress wave in a sampling interval. The acceleration sensor is arranged at the same height as the stress sensor, namely at the side length twice as long as the top surface of the model pile 2, so that the influence of complex stress waves at the pile end can be eliminated when the acceleration sensor detects the acceleration parameters of the stress waves, and the fact that the acceleration sensor is arranged at the same height as the stress sensor is only the optimal solution of the embodiment. In addition, the acceleration sensor can be selected from strain type, piezoresistance type and piezoelectric type, and proper acceleration sensor can be selected according to actual requirements.
In addition, in other embodiments, the monitoring component 3 may further include a stress wave sensor, an acceleration sensor, a displacement sensor, a load sensor, a nonmetal ultrasonic detector, and the like, where the installation instrument is selected according to the parameter to be detected, the monitoring component 3 is electrically connected with an analyzer, and the analyzer is connected with a computer and a plotter, and the computer may also be connected with a printer.
The information of the stress wave comprises elastic wave speed, average wave speed, acceleration and stress parameters, all detected parameters can form an analysis waveform, wherein the most important detection parameters are acceleration and stress parameters, and only the acceleration and stress parameters are detected in the embodiment, so that the waveform formed by final detection is more concise.
In order to enable the lower impact part 42 to strike the same position of the model pile 2 during each simulation test, so that stress waves generated by each strike are consistent, in this embodiment, a guide rod 7 is vertically installed at the top of the model pile 2, the lower end of the guide rod 7 is installed at the top of the model pile 2, the central line of the guide rod 7 coincides with the central line of the model pile 2, the guide rod 7 passes through a central shaft hole of the impact assembly 4 upwards, and the impact assembly 4 is in sliding fit with the guide rod 7.
The guide rod 7 and the model pile 2 can be connected by one of welding, riveting, cementing, threaded connection, clamping connection, mechanical connection, embedded connection and the like. The mechanical connection may be a bolt connection, a key connection, a flange connection, a pin connection, a sleeve connection, or the like, in this embodiment, considering that, due to the fact that the impact assembly 4 is movably sleeved on the guide rod 7, friction exists between the impact assembly 4 and the guide rod 7, and damage to the guide rod 7 may occur due to long-term use or unexpected situations, the guide rod 7 may be configured to be detachable, for example, in this embodiment, an external thread is protruding from a side surface of the bottom of the guide rod 7, a mounting hole is formed in the top of the model pile 2, and an internal thread is formed on a side wall of the mounting hole; the external screw thread cooperates with the internal screw thread such that the guide rod 7 is mounted on top of the model pile 2. The external threads and the internal threads are matched with each other, the guide rod 7 is installed, the guide rod 7 can be conveniently disassembled and assembled, and once the guide rod 7 is damaged due to multiple use, the guide rod can be replaced more quickly.
In the technical scheme provided by the invention, when a stress wave test is carried out, the impact assembly 4 is firstly lifted to a designated height under the action of the lifting system 5, then the impact assembly 4 is released, the impact assembly 4 freely falls until impacting the top of the model pile 2, the generated stress wave is downwards diffused in the model pile 2, and after reaching the bottom of the model pile 2, the stress wave is rebounded and upwards diffused, and finally the monitoring assembly 3 arranged at the upper half part of the side part of the model pile 2 collects the information of the two stress waves.
When the model pile 2 needs to be convenient for transport, the plastic material can be selected for the model pile 2, and when the strength of the model pile 2 needs to be ensured, the metal, concrete or wood material can be selected for the model pile 2, so long as the impact assembly 4 and the model pile 2 are ensured to be impacted and stress waves can be generated, for example, in the embodiment, the material of the model pile 2 is nylon material. The model pile 2 made of nylon is easier to carry, and meanwhile, common materials in the field such as cast iron, reinforced concrete, wood and the like are selected according to actual requirements by the model pile 2, and the model pile is not limited to the materials described in the specification.
Example two
Referring to fig. 6 to 7, this embodiment is different from the first embodiment in that: the structure of the model pile mounting seat 1 is different.
Specifically, the height of the model pile mounting seat 1 is H, and H is more than or equal to 20cm. The top of the model pile mounting seat 1 is provided with a mounting groove tightly matched with the bottom of the model pile 2, the bottom of the model pile mounting seat 1 is a bottom plate, and the bottom plate is fixedly mounted on the ground through welding or detachably mounted on the ground through bolts.
The mounting groove is inside to be filled with and is used for spacing the spacing of model stake 2, the spacing can provide side resistance and holding power for model stake 2, the spacing can select soil, felt, sealing rubber ring, paper, cotton fiber or foaming cotton, the spacing can prevent that model stake 2 from squinting or rocking when receiving impact assembly 4 striking, can also provide for model stake 2 provides side friction, high reduction reality test environment, ensures that the data that monitoring assembly 3 obtained has reference value.
In this embodiment, the limit material filled in the installation groove of the model pile installation seat 1 is soil, the notch of the installation groove is provided with a sealing rubber ring, the sealing rubber ring can prevent the soil from overflowing from the installation groove when the model pile 2 moves downwards, in other embodiments, the limit material filled in the installation groove of the model pile installation seat 1 can also be felt, sealing rubber ring, paper, cotton fiber or foam cotton, and when the limit material filled in the model pile installation seat 1 is not soil, the limit material needs to be filled at the periphery side of the model pile 2. At each test, the limit is restored and the model pile 2 is reinstalled.
Example III
Referring to fig. 8, this embodiment differs from the first embodiment in that: no guide bar is provided.
In this embodiment, an annular magnet block magnetically attracted to the lower impact portion 42 is mounted on the top of the mold pile 2, the lower impact portion 42 is made of a magnet material or a magnet piece is mounted on the bottom of the lower impact portion 42, and the magnet material, the magnet block and the magnet piece may be an alnico permanent magnet alloy, an iron-chromium-cobalt permanent magnet alloy, a barium ferrite or a strontium ferrite.
In addition, in this embodiment, the lower impact portion 42 is made of an iron-chromium-cobalt permanent magnetic alloy, the horizontal section of the lower impact portion 42 is smaller than the horizontal section of the upper impact portion 41, the magnet block is buried at the top of the model pile 2, the upper end of the magnet block is exposed, and the horizontal section of the lower impact block 42 is larger than the exposed surface of the magnet block. In other embodiments, the horizontal section of the lower impact portion 4 is larger than the top end face of the model pile 2, the magnet piece is arranged in the middle of the lower end of the lower impact portion 4, the magnet block is buried at the top of the model pile 2, the upper end of the magnet block is exposed, and the section of the magnet piece is larger than the exposed surface of the magnet block.
The impact assembly 4 reaches the position right above the model pile 2 under the lifting of the lifting system 5, the lifting system 5 is separated from the upper impact part 41, the impact assembly 4 freely falls and impacts the bulge, and the impact assembly 4 can impact on the model pile 2 at fixed points each time due to magnetic attraction, so that the stress wave generated by each impact is ensured to be consistent, the monitoring assembly 3 is separated from the pile top by at least 30 centimeters, and the stress wave information generated by the impact assembly 4 impacting on the model pile 2 is collected.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. A high strain test simulated impact teaching device, comprising:
the model pile mounting seat enables the center line of the model pile and the gravity line to be kept in a superposed state, and provides side resistance and supporting force for the model pile;
the model pile is used as a compression-resistant carrier to receive impact force from top to bottom, and a monitoring component for collecting stress wave information generated by testing is arranged on the side wall of the pile body;
and the impact assembly is positioned above the model pile and is provided with an upward lifting accumulated potential state and a downward falling impact state and is used for applying impact force to the model pile.
2. The high strain test simulated impact teaching device of claim 1, wherein: the model pile mounting seat is provided with a mounting groove which is tightly matched with the model pile, and the model pile mounting seat is fixed on a ground plane during testing.
3. A high strain test simulated impact teaching device as claimed in claim 1 or 2 wherein: the locking bolt is arranged on the periphery of the model pile mounting seat, and the model pile and the locking bolt are tightly matched to be in a fixed state or matched between the locking bolt and the model pile is in a free state by rotating the locking bolt, so that the model pile meets two simulation working conditions.
4. The high strain test simulated impact teaching device of claim 1, wherein: the impact assembly comprises an upper impact part and a lower impact part arranged at the lower end of the upper impact part, when the upper impact part lifts the lower impact part, the impact distance exists between the lower impact part and the top end of the model pile, and when the upper impact part and the lower impact part freely fall, the impact force of the impact assembly intensively impacts on the top of the model pile through the lower impact part.
5. The high strain test simulated impact teaching device of claim 4, wherein: the side wall of the upper impact part is connected with balance bars, the balance bars are provided with at least two, and at least two balance bars are arranged in a divergent mode.
6. The high strain test simulated impact teaching device of claim 1, wherein: the top of the model pile is vertically provided with a guide rod, the central line of the guide rod coincides with the central line of the model pile, the guide rod upwards passes through the central shaft hole of the impact assembly, and the impact assembly is in sliding fit with the guide rod.
7. The high strain test simulated impact teaching device of claim 6, wherein: the guide rod and the model pile adopt at least one of the following connection modes: welding, threaded connection, clamping connection, mechanical connection and embedded connection.
8. The high strain test simulated impact teaching device of claim 1, wherein: the impact assembly is connected with a lifting system, the impact assembly rises directionally under the action of the lifting system, and the impact assembly does free falling motion when the lifting system is separated from the impact assembly.
9. The high strain test simulated impact teaching device of claim 1, wherein: the model pile mounting seat is provided with at least one of the following limiting objects: soil, felt, sealing rubber rings, paper, cotton fibers and foam cotton.
10. The high strain test simulated impact teaching device of claim 1, wherein: the model pile is made of at least one of the following materials: plastic, metal, concrete, wood.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310505817.3A CN116564154A (en) | 2023-05-06 | 2023-05-06 | High strain test simulation impact teaching equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310505817.3A CN116564154A (en) | 2023-05-06 | 2023-05-06 | High strain test simulation impact teaching equipment |
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| CN116564154A true CN116564154A (en) | 2023-08-08 |
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| CN202310505817.3A Pending CN116564154A (en) | 2023-05-06 | 2023-05-06 | High strain test simulation impact teaching equipment |
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