CN219608372U - Simulation vibration testing device for pedestrian bridge - Google Patents

Simulation vibration testing device for pedestrian bridge Download PDF

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Publication number
CN219608372U
CN219608372U CN202320955424.8U CN202320955424U CN219608372U CN 219608372 U CN219608372 U CN 219608372U CN 202320955424 U CN202320955424 U CN 202320955424U CN 219608372 U CN219608372 U CN 219608372U
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test
frame
model
sensor
model table
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陈昉健
张婧
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Xiamen University of Technology
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Xiamen University of Technology
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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Abstract

The utility model relates to the technical field of bridge detection, in particular to a pedestrian bridge simulated vibration testing device. The utility model discloses a pedestrian bridge simulated vibration testing device which comprises a model table, a test seat, an upper test frame body, a lower test frame body, a telescopic shaft, a first sensor and a second sensor, wherein the model table is a pouring model of a bridge girder surface structure, the test seat is a supporting and fixing plane model of a bridge support, the model table is arranged right above the test seat, the upper test frame body is respectively fixed on two sides of the model table, the lower test frame body is respectively fixed on two sides of the test seat, the first sensor is arranged on the upper test frame body and is used for detecting transverse vibration variables between the model table and the upper test frame body, the upper end and the lower end of the telescopic shaft are respectively movably connected with the upper test frame body and the lower test frame body on the same side, and the second sensor is arranged on the upper test frame body and is used for detecting longitudinal vibration variables between the model table and the test seat.

Description

Simulation vibration testing device for pedestrian bridge
Technical Field
The utility model belongs to the technical field of bridge detection, and particularly relates to a pedestrian bridge simulated vibration testing device.
Background
The vibration test of the bridge structure is an important content of the bridge structure test, such as vibration of an automobile engine, uneven road surfaces, crowd load, wind load, earthquake and the like, the vibration of the bridge is increased along with the increase of the number of vehicles, the increase of load capacity and the increase of speed, for large-span and ultra-span bridges, the earthquake and wind load are usually control factors, so that the vibration and other dynamic loads of the vehicles become one of important factors for bridge design, construction, management, maintenance and repair, the vibration problem of the bridge structure is mostly studied by combining theoretical analysis and field test in the early stage of projects, the safety test is carried out on the bridge by combining the field test with the model simulation mode of collecting data, however, the existing vibration analysis of the bridge structure usually needs the field multi-angle and multi-node structure test, and has the problems of long test period, large test and test difficulty and lower safety, and meanwhile, the cost is higher by customizing a microscopic test model.
Disclosure of Invention
The utility model aims to provide a pedestrian bridge simulated vibration testing device which is used for solving the technical problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a people's bridge simulation vibration testing arrangement, including the model stand, the test seat, go up the test support body, test support body down, the telescopic shaft, first sensor and second sensor, the model stand is the pouring model of bridge girder face structure, the test seat is the fixed plane model of support of bridge support, the model stand sets up directly over the test seat, the both sides of model stand are fixed with test support body respectively, test support body down is fixed with respectively to the both sides of test seat, first sensor sets up on last test support body, be used for detecting the transverse vibration variable between model stand and the last test support body, the upper and lower both ends of telescopic shaft respectively with last test support body and the lower test support body swing joint of same one side, the second sensor sets up at last test support body, be used for detecting the longitudinal vibration variable between model stand and the test seat.
Further, the upper test frame body and the lower test frame body respectively comprise a first test frame and a second test frame, the first test frame is fixedly connected with the model table or the test seat, the second test frame is fixedly connected with the first test frame, and the upper end and the lower end of the telescopic shaft are respectively and movably connected with the second test frame body of the upper test frame body and the second test frame body of the lower test frame body.
Furthermore, the side walls of the model table and the test seat are respectively fixed with a shaft bolt piece, the first test rail frame is provided with a connecting column, the shaft bolts pieces are provided with first pin holes, the connecting column is provided with jacks and second pin holes communicated with the jacks, and the shaft bolts pieces penetrate through the jacks and are inserted into the first pin holes and the second pin holes through expansion pins to be fixedly connected with the connecting column.
Further, the first sensor is a displacement sensor, and the first sensor is arranged in the first test rail frame, and the sensing end corresponds to the outer end part of the shaft bolt.
Further, the first test rail frame is provided with a mounting groove, and the connecting column is clamped in the mounting groove in an interference manner and is fixedly connected with the first test rail frame.
Further, the first test rail frame and the second test rail frame are connected in a plug-in mode and are locked and fixed through screws.
Further, the second test rail frame is provided with a spherical joint, and the upper end and the lower end of the telescopic shaft are respectively fixed with universal balls which are movably connected with the spherical joint.
Further, the second sensor is an acceleration sensor, and the second sensor is arranged in the second test rail frame of the upper test frame body and corresponds to the spherical joint.
Further, the number of the first sensors and the number of the second sensors are multiple.
Furthermore, the model table is composed of two pouring rail frames, and the test seat is of an integrally formed platform structure.
The beneficial technical effects of the utility model are as follows:
the utility model can realize the simulated vibration test of the bridge microscopic model, can test the transverse vibration variable and the longitudinal vibration variable of the model table, meets the data acquisition requirement of the humanoid bridge simulated test, and avoids the problems of long test period, high test and inspection difficulty and lower safety existing in field detection and acquisition, and has high practicability.
According to the utility model, the model table and the test seat structure are respectively used as the support fixing models of the bridge girder surface and the frame body, so that the device can meet the construction requirements of bridges of different structural types, the problem of higher cost in the traditional model simulation test is avoided, and the applicability of the test device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
FIG. 2 is a schematic view of a structure of a model table and an upper test frame according to an embodiment of the present utility model;
FIG. 3 is a partially exploded view of an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a portion of the structure of an embodiment of the present utility model;
fig. 5 is a schematic diagram of a connection structure between a second test rail and a telescopic shaft according to an embodiment of the present utility model.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
The utility model will now be further described with reference to the drawings and detailed description.
As shown in fig. 1, a device for testing simulated vibration of a pedestrian bridge comprises a model table 1, a test seat 2, an upper test frame body 3, a lower test frame body 4, a telescopic shaft 5, a first sensor 6 and a second sensor 7, wherein the model table 1 is a pouring model of a bridge girder surface structure and is used for simulating a bridge body platform girder surface in an actual bridge. In this embodiment, the model stand 1 is formed by casting concrete by two casting rail frames 11, so as to more truly simulate the bridge body platform beam surface in an actual bridge, and a person skilled in the art can perform equal proportion adjustment according to the humanoid bridge structure to be tested. The test seat 2 is of an integrally formed platform structure, and the test seat 2 is used as a supporting and fixing plane model of the bridge support. The model table 1 and the test seat 2 are both rectangular plate-shaped structures.
The model table 1 is arranged right above the test seat 2, the two sides of the model table 1 along the length direction are respectively fixed with an upper test frame body 3, the two sides of the test seat 2 along the length direction are respectively fixed with a lower test frame body 4, the first sensor 6 is arranged on the upper test frame body 3 and used for detecting transverse vibration variables between the model table 1 and the upper test frame body 3, the upper end and the lower end of the telescopic shaft 5 are respectively movably connected with the upper test frame body 3 and the lower test frame body 4 on the same side, and the second sensor 7 is arranged on the upper test frame body 3 and used for detecting longitudinal vibration variables between the model table 1 and the test seat 2.
In this embodiment, 3 telescopic shafts 5 are provided between the upper test frame 3 and the lower test frame 4 on the same side, but not limited thereto.
In this embodiment, the upper test frame 3 and the lower test frame 4 each include a first test frame 341 and a second test frame 342, the first test frame 341 of the upper test frame 3 is fixedly connected with a side surface of the model table 1, the first test frame 341 of the lower test frame 4 is fixedly connected with a side surface of the test seat 2, the second test frame 342 is fixedly connected with the first test frame 341, and the upper end and the lower end of the telescopic shaft 5 are respectively movably connected with the second test frames 342 of the upper test frame 3 and the lower test frame 4.
The side walls of the model table 1 and the test seat 2 are both fixed with a shaft bolt 8, the first test rail frame 341 is provided with a connecting column 9, a first pin hole (not shown in the figure) is formed in the shaft bolt 8, a jack and a second pin hole (not shown in the figure) communicated with the jack are formed in the connecting column 9, and the shaft bolt 8 penetrates through the jack and is inserted into the first pin hole and the second pin hole through an expansion pin 100 to be fixedly connected with the connecting column 9.
In this embodiment, the connecting post 9 has a strip structure, the length direction is the same as the length direction of the first test rail 341, the insertion hole is perpendicular to the length direction of the connecting post 9, and the second pin hole extends along the length direction of the connecting post 9 and penetrates through the end face of the connecting post 9.
Specifically, the first test rail frame 341 is provided with a mounting groove 3411 extending along the length direction thereof, and the connecting post 9 is clamped in the mounting groove 3411 in an interference manner and is fixedly connected with the first test rail frame 341. The upper test frame body 3 and the lower test frame body 4 are adopted, so that the assembly is easier.
In this embodiment, the first sensor 6 is a displacement sensor, and the first sensor 6 is disposed in the first test frame 341 and the sensing end corresponds to the outer end of the axle bolt 8, so as to detect a lateral displacement variable of the axle bolt 8 relative to the first test frame 341, thereby detecting a lateral vibration variable between the model table 1 and the upper test frame 3. The displacement sensor may be an inductive displacement sensor, a capacitive displacement sensor, or the like.
The first test rail frame 341 and the second test rail frame 342 are connected in a plug-in mode and are locked and fixed through screws, so that the device is easy to install and good in stability.
The second test rail frame 342 is provided with a ball joint 3421, the upper end and the lower end of the telescopic shaft 5 are respectively fixed with a universal ball 51, the universal ball 51 is movably connected with the ball joint 3421, and the structure is adopted to realize multi-angle movement so as to better reflect the angle change of the supporting structure of the bridge frame body.
The second sensor 7 is an acceleration sensor, and the second sensor 7 is disposed in the second test rail 342 of the upper test frame 3 and corresponds to the ball joint 3421.
Preferably, the number of the first sensors 6 and the second sensors 7 is plural, so as to detect plural vibration node data.
The pedestrian bridge simulation vibration testing device uses a fixedly arranged testing seat 2 as a base carrying platform of a bridge frame body, changes the momentum of the bridge frame body through the stress activity change between a model table 1 and the testing seat 2, performs vibration interference on the model table 1 through external extrusion or vibration equipment in the simulation vibration testing process, detects transverse vibration variables of a plurality of nodes between the model table 1 and an upper testing frame body 3 through external force simulation of vibration in the pedestrian process, and detects longitudinal vibration variables of a plurality of nodes between the model table 1 and the testing seat 2 through a plurality of second sensors 7, so that the data acquisition requirement of simulation vibration testing is met, the problems of long testing period, high testing and inspection difficulty and low safety in field detection and acquisition are avoided, and the practicability is high.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A simulated vibration testing device for a pedestrian bridge is characterized in that: including model table, test seat, go up test support body, lower test support body, telescopic shaft, first sensor and second sensor, the model table is the pouring model of bridge girder face structure, the test seat is the fixed plane model of support of bridge support, the model table sets up directly over the test seat, the both sides of model table are fixed with the test support body respectively, the both sides of test seat are fixed with the test support body down respectively, first sensor sets up on last test support body for detect the transverse vibration variable between model table and the last test support body, the upper and lower both ends of telescopic shaft respectively with last test support body and the lower test support body swing joint of same one side, the second sensor sets up at last test support body for detect the longitudinal vibration variable between model table and the test seat.
2. The pedestrian bridge simulated vibration testing device of claim 1, wherein: the upper test frame body and the lower test frame body comprise a first test frame and a second test frame, the first test frame is fixedly connected with the model table or the test seat, the second test frame is fixedly connected with the first test frame, and the upper end and the lower end of the telescopic shaft are respectively and movably connected with the second test frame of the upper test frame body and the lower test frame body.
3. The pedestrian bridge simulated vibration testing device of claim 2, wherein: the side walls of the model table and the test seat are both fixed with a shaft bolt piece, the first test rail frame is provided with a connecting column, the shaft bolt piece is provided with a first pin hole, the connecting column is provided with a jack and a second pin hole communicated with the jack, and the shaft bolt piece penetrates through the jack and is inserted into the first pin hole and the second pin hole through an expansion pin to be fixedly connected with the connecting column.
4. A pedestrian bridge simulated vibration testing apparatus as claimed in claim 3, wherein: the first sensor is a displacement sensor, and is arranged in the first test rail frame, and the sensing end corresponds to the outer end part of the shaft bolt.
5. A pedestrian bridge simulated vibration testing apparatus as claimed in claim 3, wherein: the first test rail frame is provided with a mounting groove, and the connecting column is clamped in the mounting groove in an interference manner and is fixedly connected with the first test rail frame.
6. The pedestrian bridge simulated vibration testing device of claim 2, wherein: the first test rail frame is connected with the second test rail frame in a plug-in connection mode and is locked and fixed through screws.
7. The pedestrian bridge simulated vibration testing device of claim 2, wherein: and the second test rail frame is provided with a spherical joint, and the upper end and the lower end of the telescopic shaft are respectively fixed with universal balls which are movably connected with the spherical joint.
8. The pedestrian bridge simulated vibration testing device of claim 7, wherein: the second sensor is an acceleration sensor and is arranged in the second test rail frame of the upper test frame body and corresponds to the spherical joint.
9. The pedestrian bridge simulated vibration testing device of claim 1, wherein: the number of the first sensors and the number of the second sensors are multiple.
10. The pedestrian bridge simulated vibration testing device of claim 1, wherein: the model table consists of two pouring rail frames, and the test seat is of an integrally formed platform structure.
CN202320955424.8U 2023-04-25 2023-04-25 Simulation vibration testing device for pedestrian bridge Active CN219608372U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320955424.8U CN219608372U (en) 2023-04-25 2023-04-25 Simulation vibration testing device for pedestrian bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320955424.8U CN219608372U (en) 2023-04-25 2023-04-25 Simulation vibration testing device for pedestrian bridge

Publications (1)

Publication Number Publication Date
CN219608372U true CN219608372U (en) 2023-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320955424.8U Active CN219608372U (en) 2023-04-25 2023-04-25 Simulation vibration testing device for pedestrian bridge

Country Status (1)

Country Link
CN (1) CN219608372U (en)

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