CN115575067A - Anti-seismic test equipment for building structure - Google Patents
Anti-seismic test equipment for building structure Download PDFInfo
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- CN115575067A CN115575067A CN202211369019.4A CN202211369019A CN115575067A CN 115575067 A CN115575067 A CN 115575067A CN 202211369019 A CN202211369019 A CN 202211369019A CN 115575067 A CN115575067 A CN 115575067A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses earthquake-resistant test equipment for a building structure, which belongs to the technical field of building detection and comprises an experiment platform and a vibration generating device, wherein the experiment platform is provided with a base for mounting a building model, the bottom of the experiment is provided with a connecting hole which is opposite to the base, and the bottom of the base is provided with a vibration hole; a connecting frame is arranged below the experiment platform, a supporting rod horizontally facing the side wall of the vertical vibration hole is arranged on the connecting frame, a coaxial annular groove is formed in the periphery of one end of the supporting rod, a plurality of mounting grooves communicated with the annular groove are formed in the periphery of the other end of the supporting rod, a plurality of impact rods are arranged in the mounting grooves, and a reset spring is arranged between the impact rods and the mounting grooves; the annular groove is rotationally connected with an annular block, and one end of the annular block facing the impact rod is provided with a plurality of arc-shaped bulges which are irregularly distributed; the invention aims to solve the problem that the existing anti-seismic test platform has quite stable vibration frequency and cannot truly simulate the earthquake condition.
Description
Technical Field
The invention belongs to the technical field of building detection, and particularly relates to earthquake resistance test equipment for a building structure.
Background
Along with the development of social economy, various building projects are more and more, so that the building performance is more and more concerned; the earthquake resistance of the building is one of the keys of the building performance, and in order to consider the safety of the building, the earthquake resistance of the building needs to be verified on the theoretical basis by combining with a model test in a design stage, and in order to simulate the influence of an earthquake on the building, the model needs to be placed on a corresponding earthquake resistance test platform for testing.
However, the existing earthquake-resistant test platform usually adopts the impact of the reciprocating linear motion to generate the earthquake, the vibration frequency of the existing earthquake-resistant test platform is quite stable, but in the actual earthquake process, the vibration frequency belongs to the volatility, and therefore the existing earthquake-resistant test platform cannot truly simulate the earthquake condition.
Disclosure of Invention
In view of the above, the invention discloses earthquake-resistant test equipment for a building structure, and aims to solve the problem that the existing earthquake-resistant test platform is quite stable in vibration frequency and cannot truly simulate earthquake conditions.
In order to achieve the purpose, the invention provides the following technical scheme:
an earthquake-resistant test device for a building structure comprises an experiment platform and a vibration generating device, wherein the experiment platform is provided with a base for mounting a building model, the experiment bottom is provided with a connecting hole which is over against the base, and the base bottom is provided with a vibration hole; a connecting frame is arranged below the experiment platform, a supporting rod horizontally facing the side wall of the vertical vibration hole is arranged on the connecting frame, a coaxial annular groove is formed in the periphery of one end of the supporting rod, a plurality of mounting grooves communicated with the annular groove are formed in the periphery of the other end of the supporting rod, a plurality of impact rods are arranged in the mounting grooves, and a reset spring is arranged between each impact rod and each mounting groove; the annular groove is internally and rotatably connected with an annular block, and one end of the annular block facing the impact rod is provided with a plurality of arc-shaped bulges which are irregularly distributed; and the connecting frame is provided with a driving device for driving the annular block.
In the scheme, the driving device is used for driving the annular block to rotate, the annular block drives the arc-shaped protrusions to synchronously rotate, the arc-shaped end faces of the protrusions are used for extruding and pushing the impact rods, and the impact rods are reset under the action of the elastic reset pieces when the protrusions are not extruded, so that reciprocating motion is formed and the side walls of the vibration holes are continuously impacted, the base is vibrated, the building model is driven to synchronously vibrate, and the situation of simulating earthquake vibration is achieved; due to the irregular distribution of the bulges, the impact intervals of the impact rods are different, so that the vibration frequency is changed, the vibration frequency generated by the base fluctuates in a certain range, the earthquake situation is closer to the earthquake situation, and the earthquake resistance of the building structure can be accurately tested.
Further, the impact rod comprises a base rod which is connected with the mounting groove in a sliding mode and one end of the base rod is provided with a hole, the other end of the base rod is used for abutting against the bulge, and the return spring is arranged between the base rod and the mounting groove; the impact rod further comprises a contact rod connected with the base rod in a sliding mode, and a supporting spring is arranged between the contact rod and the base rod; the distance from the top of the bulge to the end face of the annular block is different.
In the scheme, because the distances from the tops of the protrusions to the end face of the annular block are different, the protrusions with different heights push and push the impact rods with different distances, when the contact rods impact the side wall of the vibration hole, the contact rods slide in the base rod, and when the contact rods slide different distances, the contact rods can impact the side wall of the vibration hole; in addition, cushion through reset spring, reduce this contact lever striking produced vibration amplitude on the vibration hole lateral wall, and then make more undulants appear in vibration frequency within range at certain vibration frequency to make the vibrations of simulation live more earthquake, the anti-seismic performance of the experimental building structure that more can be accurate.
Further, the annular groove of coaxial line is seted up towards the one end of basic pole to the annular piece, protruding one end all stretch into the annular groove and with annular groove swing joint, the cover is equipped with and is trapezoidal support cover in the arch, support cover and annular groove sliding connection, and support and be provided with the locking structure between cover and the annular piece, threaded connection has the locking bolt who is used for locking the arch on the support cover, it has the telescopic link to hinge between the arc terminal surface both sides of the cover both ends of supporting and the protruding other end.
One end of each bulge extends into the annular groove and is movably connected with the annular groove, so that the spacing distance between every two adjacent bulges can be adjusted at will, the different time intervals of the impacts of the impact rods are adjusted, and the fluctuation range of the vibration frequency is adjusted; meanwhile, the height of the bulge can be adjusted, and the distance that the bulge extrudes and pushes the impact rod is adjusted, so that the single vibration amplitude is adjusted, and the purpose of assisting in adjusting the vibration frequency fluctuation is achieved. In addition, after the protruding position and the height adjustment, the telescopic rod is matched with the side wall of the supporting sleeve to incline, so that the base rod can move between the protruding top end and the side wall of the annular block, and then the elastic resetting piece is matched to enable the impact vibration hole which does not stop the horizontal reciprocating motion of the impact rod.
Furthermore, the locking structure comprises a compression bolt, thread grooves vertically penetrate through two side walls of the support sleeve, and the compression bolt is in threaded connection with the thread grooves.
Further, the driving device comprises a driving motor fixed on the connecting frame, and the driving motor and the annular block are in transmission through a belt.
Further, a tray is rotatably connected to the base, and the same locking bolts are arranged between the tray and the base.
Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of a supporting rod according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of a ring block according to an embodiment of the present invention.
The drawings are numbered as follows: experiment platform 1, base 2, link 3, bracing piece 4, annular piece 5, arch 6, basic pole 7, contact bar 8, supporting spring 9, annular groove 10, support cover 11, locking bolt 12, connecting rod 13, housing bolt 14, tray 15.
Detailed Description
As shown in fig. 1 to 4:
an earthquake-resistant test device for a building structure comprises an experiment platform 1 and a vibration generating device, wherein a base 2 for mounting a building model is arranged on the experiment platform 1, a connecting hole which is right opposite to the base 2 is formed in the bottom of the experiment, and a vibration hole is formed in the bottom of the base 2; a connecting frame 3 is arranged below the experiment platform 1, a supporting rod 4 horizontally facing the side wall of the vertical vibration hole is arranged on the connecting frame 3, a coaxial annular groove is formed in the periphery of one end of the supporting rod 4, a plurality of mounting grooves communicated with the annular groove are formed in the periphery of the other end of the supporting rod 4, a plurality of impact rods are arranged in the mounting grooves, and a reset spring is arranged between the impact rods and the mounting grooves; an annular block 5 is rotationally connected in the annular groove, a plurality of arc-shaped bulges 6 are arranged on one end of the annular block 5 facing the impact rod, and the bulges 6 are irregularly distributed; the connecting frame 3 is provided with a driving device for driving the annular block 5.
In the scheme, the driving device is used for driving the annular block 5 to rotate, the annular block 5 drives the arc-shaped bulge 6 to synchronously rotate, the arc-shaped end face of the bulge 6 is used for extruding and pushing the impact rod, and the impact rod is reset under the action of the elastic reset piece when the bulge 6 is not extruded, so that reciprocating motion is formed and the side wall of the vibration hole is continuously impacted, the base 2 is vibrated and drives the building model to synchronously vibrate, and the situation of simulating earthquake vibration is achieved; due to the irregular distribution of the bulges 6, the impact intervals of the impact rods are different, so that the vibration frequency is changed, the vibration frequency generated by the base 2 fluctuates in a certain range, the earthquake situation is closer to the earthquake scene, and the earthquake resistance of the building structure can be accurately tested.
In this embodiment, the striking rod includes a base rod 7 slidably connected to the mounting groove and having an opening at one end, the other end of the base rod 7 is used for abutting against the protrusion 6, and the return spring is disposed between the base rod 7 and the mounting groove; the impact rod further comprises a contact rod 8 connected with the base rod 7 in a sliding mode, and a supporting spring 9 is arranged between the contact rod 8 and the base rod 7; the distance from the top of the bulge 6 to the end surface of the annular block 5 is different.
In the scheme, because the distances from the tops of the bulges 6 to the end surfaces of the annular blocks 5 are different, the distances for pushing the impact rods by the bulges 6 with different heights are different, when the contact rods 8 impact the side walls of the vibration holes, the contact rods 8 slide in the base rods 7, and when the contact rods slide for different distances, the contact rods 8 can impact the side walls of the vibration holes by utilizing the reset springs; in addition, cushion through reset spring, reduce the vibration amplitude that this 8 clashes into produced on the vibration hole lateral wall of contact rod, and then make more undulations appear in the vibration frequency within range of certain vibration frequency to the earthquake scene is more gone here to the vibrations that make the simulation, the anti-seismic performance of the experimental building structure that more can be accurate.
In this embodiment, a coaxial annular groove 10 is formed in one end, facing a base rod 7, of the annular block 5, one end of each protrusion 6 extends into the annular groove 10 and is movably connected with the annular groove 10, a trapezoidal support sleeve 11 is sleeved on each protrusion 6, the support sleeves 11 are slidably connected with the annular grooves 10, a locking structure is arranged between each support sleeve 11 and the annular block 5, and each support sleeve 11 is in threaded connection with a locking bolt 12 for locking the corresponding protrusion 6; and telescopic rods are hinged between the two ends of the support sleeve 11 and the two sides of the arc-shaped end face at the other end of the bulge 6.
One end of each protrusion 6 extends into the annular groove 10 and is movably connected with the annular groove 10, so that the spacing distance between every two adjacent protrusions 6 can be adjusted at will, the impact interval time of each impact rod is adjusted to be different, and the fluctuation range of the vibration frequency is adjusted; meanwhile, the height of the bulge 6 can be adjusted through the sliding of the bulge 6 relative to the support sleeve 11, and then the distance of pushing the impact rod by the bulge 6 is adjusted, so that the single vibration amplitude is adjusted, and the purpose of assisting in adjusting the vibration frequency fluctuation is achieved. In addition, after the position of the bulge 6 and the height adjustment, the telescopic rod is matched with the inclined side wall of the supporting sleeve 11, so that the base rod 7 can move between the top end of the bulge 6 and the side wall of the annular block 5, and then the elastic resetting piece is matched to enable the impact vibration hole which does not stop the horizontal reciprocating motion of the impact rod.
In this embodiment, the locking structure includes a pressing bolt 14, threaded grooves are vertically arranged on two side walls of the support sleeve 11 in a penetrating manner, and the pressing bolt 14 is in threaded connection with the threaded grooves; the locking between the support sleeve 11 and the ring block 5 is achieved by means of a pressure bolt 14, which serves to fix the position of the projection 6.
In this embodiment, the driving device includes a driving motor (not shown) fixed to the connecting frame 3, and the driving motor and the ring block 5 are driven by a belt (not shown).
In this embodiment, the base 2 is rotatably connected with a tray 15, and the same locking bolt 12 is arranged between the tray 15 and the base 2; by rotating the tray 15, the direction of the vibration relative to the building structure is adjusted, so that the influence of the vibration in different directions on the building structure is convenient to detect.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides an earthquake-resistant test equipment for building structure, includes experiment platform and vibration generating device, its characterized in that: the experiment platform is provided with a base for mounting a building model, the bottom of the experiment is provided with a connecting hole right facing the base, and the bottom of the base is provided with a vibrating hole; a connecting frame is arranged below the experiment platform, a supporting rod horizontally facing the side wall of the vertical vibration hole is arranged on the connecting frame, a coaxial annular groove is formed in the periphery of one end of the supporting rod, a plurality of mounting grooves communicated with the annular groove are formed in the periphery of the other end of the supporting rod, a plurality of impact rods are arranged in the mounting grooves, and a reset spring is arranged between the impact rods and the mounting grooves; the annular groove is rotationally connected with an annular block, and a plurality of arc-shaped bulges are arranged on one end of the annular block facing the impact rod and are irregularly distributed; and the connecting frame is provided with a driving device for driving the annular block.
2. An earthquake resistance test equipment for building structures according to claim 1, characterized in that: the impact rod comprises a base rod which is connected with the mounting groove in a sliding mode and is provided with a hole at one end, the other end of the base rod is used for abutting against the bulge, and the reset spring is arranged between the base rod and the mounting groove; the impact rod further comprises a contact rod in sliding connection with the base rod, and a support spring is arranged between the contact rod and the base rod; the distance from the top of the bulge to the end face of the annular block is different.
3. An earthquake resistance test apparatus for building structures according to claim 2, characterized in that: the annular groove of coaxial line is seted up towards the one end of basic pole to the annular piece, protruding one end all stretch into the annular groove and with annular groove swing joint, the cover is equipped with and is trapezoidal support cover in the arch, support cover and annular groove sliding connection, and support and be provided with the locking structure between cover and the annular piece, threaded connection is used for locking bellied locking bolt on the support cover, it has the telescopic link to articulate between the arc terminal surface both sides of the cover both ends of supporting and the protruding other end.
4. An earthquake resistance test equipment for building structures according to claim 3, characterized in that: the locking structure comprises a compression bolt, thread grooves are vertically arranged on two side walls of the supporting sleeve in a penetrating mode, and the compression bolt is in threaded connection with the thread grooves.
5. An earthquake resistance test equipment for building structure according to claim 4, characterized in that: the driving device comprises a driving motor fixed on the connecting frame, and the driving motor and the annular block are in transmission through a belt.
6. An earthquake resistance test equipment for building structure according to claim 5, characterized in that: the base is rotatably connected with a tray, and the same locking bolt is arranged between the tray and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369019.4A CN115575067A (en) | 2022-11-03 | 2022-11-03 | Anti-seismic test equipment for building structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369019.4A CN115575067A (en) | 2022-11-03 | 2022-11-03 | Anti-seismic test equipment for building structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115575067A true CN115575067A (en) | 2023-01-06 |
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ID=84589743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211369019.4A Pending CN115575067A (en) | 2022-11-03 | 2022-11-03 | Anti-seismic test equipment for building structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN115575067A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698333A (en) * | 2023-07-27 | 2023-09-05 | 徐州市检验检测中心 | Steel construction building antidetonation check out test set |
| CN117213785A (en) * | 2023-11-06 | 2023-12-12 | 广东金来电气有限公司 | Anti-seismic performance detection device of anti-seismic support |
-
2022
- 2022-11-03 CN CN202211369019.4A patent/CN115575067A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698333A (en) * | 2023-07-27 | 2023-09-05 | 徐州市检验检测中心 | Steel construction building antidetonation check out test set |
| CN116698333B (en) * | 2023-07-27 | 2023-10-13 | 徐州市检验检测中心 | Steel construction building antidetonation check out test set |
| CN117213785A (en) * | 2023-11-06 | 2023-12-12 | 广东金来电气有限公司 | Anti-seismic performance detection device of anti-seismic support |
| CN117213785B (en) * | 2023-11-06 | 2024-02-02 | 广东金来电气有限公司 | Anti-seismic performance detection device of anti-seismic support |
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