CN116105958B - Road and bridge expansion joint impact resistance data simulation experiment system and method - Google Patents
Road and bridge expansion joint impact resistance data simulation experiment system and method Download PDFInfo
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- CN116105958B CN116105958B CN202310373025.5A CN202310373025A CN116105958B CN 116105958 B CN116105958 B CN 116105958B CN 202310373025 A CN202310373025 A CN 202310373025A CN 116105958 B CN116105958 B CN 116105958B
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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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- 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 invention belongs to a physical property experimental device, and particularly discloses a road and bridge expansion joint impact resistance data simulation experimental system and method, which are used for performing impact resistance simulation test on a telescopic device arranged between two adjacent beams of a bridge road, and comprise a bearing frame and a test part arranged on the bearing frame; the telescopic device is provided with two fixed parts and a telescopic part arranged between the fixed parts; meanwhile, an experimental method is also disclosed, and the impact resistance test of the telescopic device is performed by using the experimental system. According to the invention, the driving mechanism is arranged to drive different sub-parts in the test part to spatially displace, so that the gap and the drop between the two parts of the expansion joint are adjusted, and a rolling plane is formed by matching with the fixed table, so that the test vehicle can be circularly pressed to test the assembly and the structural stability of the test vehicle.
Description
Technical Field
The invention belongs to the technical field of physical property experimental devices, and particularly relates to a road and bridge expansion joint impact resistance data simulation experiment system and method.
Background
Bridge expansion joints refer to expansion joints which are usually arranged between two beam ends, between a beam end and a bridge abutment or at the hinge position of a bridge in order to meet the requirement of bridge deck deformation.
The bridge expansion joint also refers to a device in engineering, namely a telescopic device in the text. The structure is arranged at the expansion joint between two beam ends for connection and blocking. The structure principle is divided into a butt joint type, a steel supporting type, a combined shearing type (plate type), a module supporting type and an elastic device. The shock absorber is characterized by comprising two fixing parts with a certain gap and a telescopic part arranged between the fixing parts, wherein the fixing parts are fixed on a corresponding side beam, and the telescopic part in the middle of the fixing parts has a buffering effect. Although the types of the bridge expansion devices are more, national standard requirements are required to be met, and before leaving the factory, each expansion joint device is required to be detected, so that the expansion joint device meets the standard.
According to the existing detection mode, detection of each telescopic device is limited to simple stretching detection, and only static parameters such as welding quality, size deviation, surface treatment and stretching performance of a telescopic part of the telescopic device can be known, but the telescopic device of a highway bridge can meet the conditions of drop and the like on the surface due to various problems when in use, and particularly after a certain drop exists between two fixed parts, whether the normal same line of vehicles can be ensured on the premise of meeting national standard requirements or not, and the stability of the telescopic device can be ensured even if the vehicles continuously impact in a certain period, so that related information can not be acquired through the existing test equipment.
The invention patent of 201410362450.5 discloses a bridge expansion joint jump impact force measuring device, which is characterized in that an expansion joint is formed by a set of structures comprising a plurality of approach bridges, and a test trolley with a counterweight is used for testing. The technology of this patent is not directed to expansion joint arrangements, but rather to the joints themselves formed at the bridge joints. The objective of the expansion joint impact test mentioned in the patent is a bridge, the impact is mainly used for feeding back the influence on the stability of the bridge, namely vibration data and deflection data, the data are obtained to guide the structural design of the bridge, but the device and the method cannot be used for evaluating the problem of the bridge expansion joint device, particularly the problem that the expansion joint device is impacted and damaged due to abnormal fall of the expansion joint, and the stability of the bridge structure cannot be used for guiding the stability evaluation of the equipment.
The existing bridge expansion device is deformed by local materials and torn to form protrusions which stand on the road surface after being impacted for many times, and the accident that the vehicle turns over due to the fact that the protrusions scratch the chassis of the vehicle cannot be confirmed after accident investigation is carried out. If the simple mechanical test is performed just before leaving the factory, whether the corresponding expansion device can withstand the vehicle impact within the fall range meeting the national standard requirement after being installed cannot be determined, and the influence of the construction process for replacing different expansion devices on the expansion joint cannot be confirmed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a road and bridge expansion device impact resistance data simulation experiment system with more test dimensions, which mainly comprises the steps that a driving mechanism is used for carrying out space displacement on an expansion joint device with two fixed parts to form a drop and different gaps, and a control part is used for testing rolling collection data of a vehicle to actually judge whether the performance of the expansion joint meets the requirements under different conditions.
The technical scheme adopted by the invention is as follows:
the invention provides a road and bridge expansion joint impact resistance data simulation experiment system, which is used for performing impact resistance simulation test on a telescopic device arranged between two adjacent beams of a bridge road, and comprises a control part, a bearing frame and a test part arranged on the bearing frame;
the control part is provided with an operation table, and the test part is controlled by the operation table;
the telescopic device is provided with two fixed parts and a telescopic part arranged between the fixed parts; the test part comprises at least two sub-parts for simulating two adjacent beams, and the fixed parts of the tested telescopic device are respectively fixed on the two sub-parts;
at least one sub-part is movably connected with the bearing frame, and the driving mechanism arranged on the bearing frame drives the sub-part to drive the fixed part to spatially displace relative to the other fixed part and generate a height difference;
A fixed table which is connected with the sub-part at intervals is arranged on the bearing frame, the fixed table is provided with a test plane for a test vehicle to pass through, and the test plane is flush with the top of the telescopic device fixed on the same side for the test vehicle to pass through the telescopic device with the height difference;
the fixed table and the telescopic device are provided with a plurality of sensors and camera shooting components which are connected with the control part, the control part controls the driving mechanism to perform impact test on the telescopic device, and experimental data are acquired through the sensors and the camera shooting components.
With reference to the first aspect, the present invention provides a first implementation manner of the first aspect, wherein the sub-portion is a fixing groove with a containing space, and the fixing groove is provided with an opening for the telescopic part of the telescopic device to penetrate out at a side facing to the adjacent fixing groove; the fixing groove is internally provided with a fixing piece fixedly connected with the telescopic device;
the fixing parts of the telescopic device are fixed in the adjacent fixing grooves through the fixing pieces, and the accommodating space of the fixing grooves is filled with the packing which covers and compresses the fixing parts in the fixing grooves.
With reference to the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the fixing groove has a baffle plate on an opposite side surface provided with an opening, and a plurality of through holes are formed on the baffle plate;
The fixing piece is a rod piece penetrating through the through hole, and the rod piece is in limit connection with the baffle through a detachable fastener arranged on the rod piece;
the end part of the rod piece in the fixing groove is connected with the fixing part of the telescopic device through a detachable connecting piece.
With reference to the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the rod is a cable structure, and the fastener is an anchor sleeved on the cable.
With reference to the second embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the rod is a tensioning screw rod with external threads, the fastener is a tensioning nut rotatably connected with the baffle, the tensioning screw rod passes through the tensioning nut and is matched with the tensioning nut, and the tensioning nut rotates to cause the tensioning screw rod to reciprocate along the length direction.
With reference to the second embodiment of the first aspect, the present invention provides a fifth embodiment of the first aspect, wherein the detachable connection member has a first connection hole, and the end of the rod member located in the fixing groove has a second connection hole, and the detachable connection is formed by aligning the first connection hole with the second connection hole axis and inserting a bolt.
With reference to the second embodiment of the first aspect, the present invention provides a sixth embodiment of the first aspect, wherein the fixing portion of the telescopic device includes a plurality of U-shaped anchor bars, and the detachable connection member is welded or clamped with the anchor bars.
With reference to the first aspect or the several embodiments of the first aspect, the present invention provides a seventh embodiment of the first aspect, the driving mechanism includes a cam rotation mechanism, and the cam rotation mechanism includes a gear motor and several eccentric rotation mechanisms;
the eccentric rotating mechanism comprises two mutually hinged parts which are respectively connected with the sub-part and the bearing frame, the hinge shafts of the two mutually hinged parts of the eccentric rotating mechanism are not coaxial, and the rotation circle centers of all the eccentric rotating mechanisms are collinear;
the gear motor is rotationally connected with any one of the eccentric rotating mechanisms, and the output shaft of the gear motor is aligned with the rotating circle center of the eccentric rotating mechanism.
The cam rotating mechanism is different from the structure of the existing hydraulic cylinder lifting mechanism, the drop range required to be tested for two fixed parts of the telescopic device is smaller, the gain is smaller in a hydraulic lifting mode, and the occupied space is larger in the vertical space. Because the device needs to be arranged on the ground for testing the rolling impact of the vehicle, if the vertical direction is occupied greatly, the height difference between the top surface of the whole device and the ground is affected, and therefore the device needs to be provided with a deeper sinking groove or a longer guiding inclined plane to meet the requirement of impact test at a certain speed.
If the hydraulic cylinder is horizontally or obliquely arranged, the space occupation in the vertical direction is avoided, the test vehicle is likely to form impact force on the axial direction of the hydraulic cylinder when contacting the telescopic device with the height difference, and the hydraulic cylinder cannot bear due to the large impact force, so that the problem occurs. And the expansion joint needs to bear the gravity of the vehicle, if the hydraulic pressure with small volume is adopted, the gravity cannot be born, the lifting height of the hydraulic cylinder with large volume greatly exceeds the test requirement, and the precision control cannot meet the test requirement.
The cam rotating mechanism not only controls the rotating radius by adjusting the length of the connecting rod, but also is suitable for the small-range space displacement requirement of the device, simultaneously supports the telescopic device through the reduction motor and the eccentric rotating mechanism, has better structural strength, has larger turning torque, and can also play a better role in stability when receiving larger impact force. The adopted worm gear speed reducing motor also has a better self-locking effect, occupies a reduced space and is suitable for the use scene of the device.
With reference to the first aspect or the several embodiments of the first aspect, the present invention provides an eighth embodiment of the first aspect, the driving mechanism includes a cam lifting mechanism and a hydraulic pushing mechanism, wherein:
The cam lifting mechanism comprises a gear motor and rollers arranged on any sub-part, a cam is arranged on an output shaft of the gear motor, the rollers are in rolling contact with the side edges of the cam, a lifting frame is arranged on the bearing frame, the sub-part with the cam is movably connected with the lifting frame and limited by the lifting frame, and the sub-part is pushed to linearly move by being matched with the rollers when the cam rotates;
the hydraulic pushing mechanism comprises a plurality of hydraulic cylinders connected with the other sub-part, the end parts of the hydraulic cylinders push the sub-part to move on the bearing frame in a straight line, and the moving direction of the hydraulic cylinders is perpendicular to the moving direction of the sub-part driven by the cam lifting mechanism.
With reference to the several embodiments of the first aspect, the present invention provides a ninth implementation manner of the first aspect, where the sensor is disposed in the telescopic device, the fixed slot, and the fixed table for data acquisition; the bearing frame is fixed in a sinking groove arranged on the ground or underground, and when the bearing frame is fixed on the ground, the fixed table is provided with an inclined plane at one side far away from the telescopic device for guiding the test vehicle to drive to the fixed telescopic device; when being fixed in the heavy groove, the fixed station is arranged at the height of one side far away from the telescopic device and is flush with the edge of the heavy groove.
In a second aspect, the invention provides an experimental method, which adopts the road and bridge expansion joint impact resistance data simulation experimental system, and comprises the following specific steps:
G100. firstly, determining an experiment site, defining a required annular closed experiment lane, and determining a region provided with an experiment part on the experiment lane for scribing and positioning;
G200. setting a test part on the ground with marking and positioning or in a sinking groove arranged on the ground, then installing and connecting a driving mechanism and a fixed table, and installing a control part on the ground which is close to the test part outside an experiment lane;
G300. the two fixing grooves of the test part are moved to the initial position by the driving mechanism to be arranged in a flush manner, and the telescopic devices to be tested are respectively arranged on the two fixing grooves of the test part;
G400. connecting a fixed part of the telescopic device with a fixed part, arranging sensors at the connecting part and the telescopic part, pulling out a cable to be connected with a control part, filling filler in the area of the fixed groove connected with the fixed part, and compacting and fixing;
G500. adjusting the position of the fixed table to enable the gap between the fixed groove and the fixed table to be larger than the moving range of the fixed groove, controlling the driving mechanism to drive one group or two groups of fixed grooves to move through the control part to form a drop, and arranging a baffle plate at the gap between the fixed table and the fixed groove after the fixed table is fixed;
G600. Calibrating a sensor at a console, entering a test flow, driving a test vehicle to run at a constant speed on an experimental road, recording sensor data and video data when the test vehicle passes through the telescopic device each time, analyzing according to the data, and carrying out backtracking analysis on the acquired data under the condition that the telescopic device is damaged and a filled filler area is damaged;
G700. and taking down the tested fixed slot and replacing the new fixed slot for the next round of testing.
The beneficial effects of the invention are as follows:
(1) According to the invention, the driving mechanism is arranged to drive different sub-parts in the test part to spatially displace, so that the gap and the drop between the two parts of the telescopic device are adjusted, and a rolling plane is formed by matching with the fixed table, so that a test vehicle is circularly pressed to test the assembly and the structural stability of the test vehicle;
(2) According to the invention, an actual anchoring area structure is simulated through the fixed groove, so that an accommodating space is formed for connecting the fixed part of the telescopic device, the fixed part is fixedly connected with the fixed groove through the fixing piece, the actual reinforced bar structure is simulated to form a plurality of hard connection points, the accommodating space is filled with corresponding filler to meet the simulation requirement as much as possible, meanwhile, the related performance of the assembly process can be tested through replacing different filler, different fixing pieces and different fixing modes, and the related connecting piece can be subjected to proper structural adjustment;
(3) According to the invention, the cam rotating mechanism provides a space displacement effect for any one or a plurality of sub-parts, so that displacement is provided in the horizontal direction and the vertical direction at the same time, the fall and the gap can be formed conveniently and rapidly, and compared with the hydraulic pushing mechanism, the space occupied by the displacement is smaller in the vertical direction, so that the whole equipment is more compact, and a better positioning and supporting effect is realized through the gear motor with a self-locking function;
(4) According to the invention, different displacement control is realized on different sub-parts through the cooperation of the cam lifting mechanism and the hydraulic pushing mechanism, so that the stability of the cam lifting mechanism is ensured, better fall and clearance control are realized through the cooperation, and meanwhile, shearing force and pulling force can be generated in the horizontal and vertical horizontal directions, so that the cam lifting mechanism is used for testing the stability of a telescopic device and an assembly process;
(5) The invention meets the requirements of different use environments by being arranged on the ground or underground, and realizes the high-speed circulation rolling test of the test vehicle by matching with the site.
Drawings
FIG. 1 is a schematic view of the entire measuring device of the present invention in a state of testing;
FIG. 2 is a top view of a carrier for holding a telescoping device in a measuring device of the present invention;
FIG. 3 is a first isometric view of a carrier for securing a telescoping device in a measuring device of the present invention;
FIG. 4 is an enlarged schematic view of part A of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged schematic view of a portion B of FIG. 3 in accordance with the present invention;
FIG. 6 is a second isometric view of a carrier for securing a telescoping device in a measuring device of the present invention;
FIG. 7 is a schematic view showing a state of the measuring device of the present invention when an automobile impact test is performed above the ground;
FIG. 8 is a partial schematic view of the test section of the present invention at an initial spacing after installation of the telescoping device;
FIG. 9 is a partial schematic view of the test section of the present invention after the telescoping device is installed and filled with filler;
FIG. 10 is a partial schematic view of the left side fixing groove rotated outward by 90 degrees in the state of FIG. 9 according to the present invention;
fig. 11 is a partial schematic view of the present invention after horizontally moving the right side fixing groove to the left side fixing groove side by a certain distance in the state of fig. 10.
In the figure: 1-bearing frame, 2-hydraulic cylinder, 3-fixed slot, 4-eccentric rotating frame, 5-sliding frame, 6-anchoring bar, 7-tightening screw, 8-tightening nut, 9-detachable connector, 10-telescoping device, 11-telescoping part, 12-packing and 13-fixed table;
d1-first anchoring region, D2-second anchoring region.
Detailed Description
The invention is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 terms in this application will be understood by those of ordinary skill in the art in a specific context.
Example 1:
the embodiment discloses road and bridge expansion joint impact resistance data simulation experiment system, which is mainly used for performing impact test on a telescopic device 10 arranged between two adjacent beams of a bridge road, wherein the impact test refers to a test vehicle or a simulation test vehicle performing rolling test on an assembled telescopic device 10 structure, so as to obtain change data generated by the telescopic device 10 and an assembly process thereof, and the change data is used for feeding back whether the telescopic device 10 can withstand impact when a certain fall is generated.
Specifically, the apparatus includes a carrier 1 and a test section provided on the carrier 1. The carrier 1 serves as a fixed part and carries the test section. The test part can be displaced on the carrier 1, and the telescopic device 10 is placed on the test part for testing.
The telescopic device 10 has two fixed parts and a telescopic part 11 arranged between the fixed parts; the test part comprises at least two sub-parts for simulating two adjacent beams, and the fixed parts of the tested telescopic device 10 are respectively fixed on the two sub-parts; at least one sub-part is movably connected with the bearing frame 1, and the sub-part is driven by a driving mechanism arranged on the bearing frame 1 to drive the fixed part to spatially displace relative to the other fixed part and generate a height difference; the loading frame 1 is provided with a fixing table 13 which is connected with the sub-parts at intervals, the fixing table 13 is provided with a test plane for a test vehicle to pass through, and the test plane is flush with the top of the telescopic device 10 fixed on the same side for the test vehicle to pass through the telescopic device 10 with the height difference for impact test.
The length of the test plane is 5 times greater than that of the test vehicle, so that the length of the fixed table 13 can be properly lengthened or the device can be arranged below the ground in order to adapt to the test vehicle passing at high speed, so that the test plane of the fixed table 13 can be kept flush with the ground, and the test vehicle can perform a cyclic rolling test on the telescopic device 10 in an annular field.
The experimental method also discloses an experimental system for simulating the impact resistance data of the road and bridge expansion joint, which comprises the following specific steps:
firstly, determining an experiment site, defining a required annular closed experiment lane, and determining a region provided with an experiment part on the experiment lane for scribing and positioning;
setting a test part on the ground with marking and positioning or in a sinking groove arranged on the ground, then installing and connecting a driving mechanism and a fixed table, and installing a control part on the ground which is close to the test part outside an experiment lane;
the two fixing grooves 3 of the test part are moved to the initial position by the driving mechanism to be arranged in a flush manner, and the telescopic device 10 to be tested is respectively arranged on the two fixing grooves 3 of the test part;
connecting the fixed part of the telescopic device 10 with a fixed part, arranging sensors at the connecting part and the telescopic part, pulling out a cable to be connected with a control part, filling filler in the area of the fixed groove 3 connected with the fixed part, and compacting and fixing;
Adjusting the position of the fixing table to enable the gap between the fixing groove 3 and the fixing table 13 to be larger than the moving range of the fixing groove 3, driving one group or two groups of fixing grooves 3 to move by a driving mechanism controlled by a control part to form a drop, and arranging a baffle at the gap between the fixing table 13 and the fixing groove 3 after fixing;
calibrating a sensor at a console, entering a test flow, driving a test vehicle to run at a constant speed on an experimental road, recording sensor data and video data when the test vehicle passes through the telescopic device 10 each time, analyzing according to the data, and performing backtracking analysis on the acquired data under the condition that the telescopic device 10 is damaged and a filled filler area is damaged;
and taking down the tested fixed slot 3 and replacing the new fixed slot 3 for the next round of testing.
Further, the sub-portion is a fixing groove 3 having an accommodating space, and the fixing groove 3 has an opening for the telescopic portion 11 of the telescopic device 10 to pass through on a side facing the adjacent fixing groove 3; a fixing piece fixedly connected with the telescopic device 10 is arranged in the fixing groove 3; the fixing portions of the telescopic device 10 are fixed in the adjacent fixing grooves 3 by the fixing members, and the receiving space of the fixing groove 3 is filled with the packing 12 covering and pressing the fixing portions in the fixing groove 3.
In one embodiment, as shown in fig. 8, a specific arrangement of the fixing groove 3 is shown. The fixed slots 3 are of a cuboid structure, and the two fixed slots 3 are horizontally arranged on the bearing frame 1 side by side and are connected with one or more relative displacements by a driving mechanism. The size of the accommodating space in the fixing groove 3 is larger than that of the fixing part of the telescopic device 10, when the telescopic device is installed, as shown in fig. 8, the two fixing grooves 3 form a relatively static state, the fixing part of the telescopic device 10 and the telescopic part 11 are assembled and then placed between the two fixing grooves 3, and the fixing parts are connected and fixed by fixing pieces.
As can be seen in fig. 8, the fixing groove 3 is provided with a stop on the opposite side, against which a bottom edge of the fixing portion of the telescopic device 10 is mounted. The upper part of the stop bar is provided with an opening of the fixing groove 3, and the telescopic part 11 passes through the fixing parts connected with the two sides.
The telescopic device 10 in this embodiment has two fixing portions, the middle telescopic portion 11 is made of rubber, its cross section is V-shaped, and has two ribs, and the connection is achieved by clamping the ribs in the caulking grooves of the fixing portions. In use, the telescopic part 11 of this type of telescopic device 10 is not stressed and is only used to block its gap when the two fixed parts are moved relative to each other. The fixed part of the telescopic device 10 comprises a plurality of U-shaped anchoring steel bars 6, and the detachable connecting piece 9 is welded or clamped with the anchoring steel bars 6.
While the packing 12 is provided in the space between the outside of the fixing portion and the inner wall of the fixing groove 3, the position of the packing 12 is shown in fig. 9, i.e., the area indicated by the gravel pack pattern in the drawing.
The measuring device in this embodiment is required to determine the impact resistance of the structure itself of the telescopic device 10 having a drop height, and also to test the stress condition of the connection of the fixed part of the telescopic device 10 to the beam structure when the fixed part is impacted. So the holding space is arranged in the fixed groove 3 for arranging the packing 12, and the packing 12 can be replaced according to experimental requirements.
The filler 12 is typically installed in the same manner as the telescoping device 10, and is filled with backfill or other particulate material to see if the vehicle rolls and impacts the area during the impact test. In this embodiment, the backfill and the granular material are used only for covering and compacting the fixing part, and the fixing part is stable when the vehicle rolls, and the horizontal supporting force is not provided by the filler 12 part, but the fixing part is mainly connected with the anchoring steel bar 6 in the horizontal direction to realize fixing.
However, since the device is mainly used for testing the problem of impact resistance of the fall generated at the gap after the vertical deflection of the beams at two sides of the telescopic device 10, in order to ensure that the telescopic device 10 and the filler 12 can keep stable during the vehicle jump, the filler 12 can also be poured by adopting a concrete structure so as to further improve the stability.
When the concrete structure is adopted for pouring, the fixing groove 3 can be made of high polymer or low-cost inorganic materials, and can be directly crushed together with the concrete structure after test use to form the backfill 12. It should be noted that, after the fixing portion of the telescopic device 10 is directly placed in the fixing groove 3 and is fixed by the fixing member, the gap between the opening of the fixing groove 3 and the fixing portion is blocked by the blocking material or other materials, and then the backfilling of the filler 12 is performed, so as to prevent the backfilled filler 12 from falling out from the opening or the gap at one side.
Further, the fixed slot 3 is provided with a baffle on the opposite side surface provided with an opening, and a plurality of through holes are arranged on the baffle; the fixing piece is a rod piece penetrating through the through hole, and the rod piece is in limit connection with the baffle plate through a detachable fastener arranged on the rod piece; the end of the rod in the fixing groove 3 is connected with the fixing part of the telescopic device 10 by a detachable connecting piece 9.
There is certain clearance between fixed slot 3 and fixed station 13, can cover the apron at the top of clearance and cover it, can not cause the influence to fixed station 13 side and fixed slot 3's baffle upper edge when the vehicle rolls. The baffle and the fixed groove 3 are integrally formed, and in order to achieve good connection stability, the baffle is thickened. The rod passes through the baffle and is fixedly connected with the baffle, so that the fixed part is fixedly connected with the fixed groove 3.
Unlike the prior art, since the expansion device 10 is fixedly connected with the plurality of anchor bars 6, which are provided in a U-shape in fig. 8, as the connection portion when being installed, the prior art only clamps or fixes the length portion of the expansion device 10 in other manners, and the fixing manner is easy to be broken directly at the connection portion when being impacted by the vehicle, so that effective test data cannot be obtained. In order to simulate the fixed connection between the beam and the steel bars reserved in the fixed part during actual use, the embodiment is connected with the anchor steel bars 6 of the fixed part through a plurality of fixing pieces to form a good fixing effect, and corresponding sensors are arranged at the connecting positions to detect the stress condition of each anchor steel bar 6 when the structure is impacted.
In one embodiment, the rod is a cable structure, and the fastener is an anchor sleeved on the cable. During testing, the parts of the telescopic devices 10 on the two sides are moved in the initial state to enable the parts to be in the minimum clearance state, and then the parts are fixedly connected with the fixed groove 3, so that the telescopic devices 10 are outwards stretched during the action of the driving mechanism, the fixing can be realized through the anchorage devices, and the anchorage devices are fixedly connected with the baffle plates.
In another embodiment, as shown in fig. 4-6, the rod is a tensioning screw 7 with external threads, the fastener is a tensioning nut 8 rotatably connected with the baffle, the tensioning screw 7 passes through the tensioning nut 8 and cooperates with the tensioning nut 8, and rotation of the tensioning nut 8 causes the tensioning screw 7 to reciprocate in the length direction.
The detachable connection 9 has a first connection hole and a second connection hole at the end of the rod piece in the fixing groove 3, and the detachable connection is formed by aligning the first connection hole with the second connection hole axis and inserting a bolt.
Specifically, as can be seen in fig. 5, a plurality of through holes are formed in the baffle, columnar outer edge structures protruding outwards are arranged at positions corresponding to the through holes on the outer side of the baffle, and a tensioning nut 8 is rotatably connected to the end part of each outer edge structure.
The tensioning nut 8 is rotatably connected with the outer edge structure of the baffle through hole, namely, a clamping ring or a flange is arranged at the connecting position, and the flange is used for limiting the tensioning nut 8 to rotate only around the axis of the through hole. The tensioning nut 8 is internally provided with internal threads, one end of the tensioning screw rod 7 firstly penetrates into the through hole from the inner side of the fixing groove 3 and abuts against the tensioning nut 8 during installation, then the tensioning screw rod 7 is limited to rotate, and the tensioning nut 8 is rotated to enable the tensioning screw rod 7 to move outwards. When the tightening screw 7 is moved to the corresponding position so that the end thereof inside the fixing groove 3 has enough space for the installed anchoring bar 6 to be placed, the rotation of the tightening nut 8 is stopped.
Before the fixing part of the telescopic device 10 is installed, all the tensioning screws 7 are adjusted to the same position, so that the end part of the tensioning screws, which is positioned at the inner side of the fixing groove 3, has a gap with the anchoring steel bar 6 after the telescopic device 10 is installed. After the telescopic device 10 is installed in the fixing groove 3, a detachable connecting piece 9 is fixed at the U-shaped end of each anchoring steel bar 6. In this embodiment, the detachable connection piece 9 has various embodiments, such as a block structure, and is directly and fixedly connected with the anchor bar 6 by means of bonding welding.
Not shown in the figures, the detachable connection piece 9 is provided with a first connection hole, which is not limited in number and is generally provided in number. The end of the tensioning screw 7 is provided with an expansion end, the expansion end is provided with a plurality of corresponding second connecting holes, the number of the first connecting holes and the number of the second connecting holes in the embodiment can be unequal, and the tensioning screw 7 and the detachable connecting piece 9 are conveniently fixed by arranging a plurality of first connecting holes or a plurality of second connecting holes.
The detachable connecting piece 9 can also adopt other embodiments, namely a clamp structure, the clamp structure is fixed by being provided with a bolt for tensioning, the clamp structure is fixed by holding the clamp structure and the U-shaped end part of the anchoring steel bar 6, and the clamp structure is inserted into the first connecting hole and the second connecting hole which are adjusted and aligned by bolts to realize connection. This way, unlike the previous embodiments, it is possible to remove quickly after the test, making the removable connection 9 reusable.
After the anchor steel bar 6 of the telescopic device 10 is fixedly connected with the tensioning screw rod 7 in the mode, the tensioning nut 8 can be screwed up through a tool after the packing 12 is filled, so that the tensioning screw rod 7 can simulate the connection of the beam steel bar planting and the anchor steel bar 6, a tension sensor or an impact sensor is arranged at the connection position, and the sensor is connected with an external control module through a cable to feed back real-time data.
Further, the driving mechanism is optimized in order to solve the problem of how to provide a driving mechanism which is stable in displacement control, occupies a small space and is convenient to install.
In one embodiment, the carrier 1 comprises two parallel-arranged i-beams and several connecting profiles arranged between the i-beams. The width of the I-steel is similar to that of the fixed groove 3, and the driving mechanism is arranged on the I-steel.
Specifically, only one side of the fixing groove 3 is movably connected with the bearing frame 1, and the other side of the fixing groove 3 is fixed on the I-steel through bolts. The lower part of the movable connecting and fixing groove 3 is provided with a driving mechanism which is a cam rotating mechanism.
The cam rotation mechanism includes a gear motor and several eccentric rotation mechanisms, only which are shown in fig. 2 to 11, and the gear motor is not shown. The eccentric rotation mechanism comprises two mutually hinged parts, namely an eccentric turret 4 shown in the figures. The eccentric rotating frame 4 is an ear seat structure, which is fixed on the I-steel and at the bottom of the fixed groove 3 and is provided with a shaft hole. The eccentric arrangement refers to a group of eccentric rotating frames 4 which are correspondingly matched and connected, and the centers of the shaft holes are not collinear, but are eccentrically and rotatably connected by a connecting rod.
Through set up a plurality of eccentric revolving racks 4 of group on the I-steel of both sides to realize through the articulated mode of multiple spot that whole fixed slot 3 carries out elliptical rotation with a body external point, look over with eccentric revolving rack 4 department as the reference point, the rotation centre of a circle is the shaft hole of eccentric revolving rack 4 of setting up on the I-steel of whole fixed slot 3.
And the gear motor is rotationally connected with any one of the eccentric rotating mechanisms, and the output shaft of the gear motor is aligned with the rotating circle center of the eccentric rotating mechanism. In the embodiment shown in fig. 8, a semi-cylinder is further provided at the bottom of the fixing groove 3, and two ends of the semi-cylinder are provided with two connecting rods hinged to the outer ends of the semi-cylinder, while the other end is hinged to the output shaft of the gear motor provided in the middle of the carrier 1. At least two synchronous running and controlling gear motors are arranged on a single fixed slot 3, and the fixed slot 3 is driven by the two gear motors to carry out elliptical motion.
In fig. 8 and 9, which are initial states of the fixing groove 3, the left fixing groove 3 is rotated outward by the slow rotation of the gear motor, i.e., displacement is generated in the horizontal direction and the vertical direction at the same time when seen from a side view, so that a drop and a space, i.e., a so-called spatial displacement, can be generated with respect to the right fixing groove 3.
Further, in order to achieve a better adjustment effect in the horizontal distance, the right fixing groove 3 is also movably connected with the carrier 1. Namely, the fixing groove 3 on the left side and the right side is divided into a first anchoring area D1 part and a second anchoring area D2 part, the second anchoring area D2 is driven by the cam rotating mechanism, a sliding frame 5 is arranged at the lower part of the fixing groove 3 of the first anchoring area D1, and the sliding frame 5 is used for limiting the right side fixing groove 3 to form sliding limiting connection with I-steel. On the side of the fastening slot 3 of the first anchoring region D1, a drive mechanism, i.e. a horizontally arranged hydraulic drive mechanism, is provided. The hydraulic pushing mechanism comprises a hydraulic cylinder 2 and a connecting plate arranged at the end part of the hydraulic cylinder 2 and used for connecting the position of the baffle plate of the fixed slot 3.
The hydraulic cylinder 2 and the gear motor are connected with a control module, and the control module controls synchronous operation.
In fig. 9-11, the adjustment of the head and spacing between the two fixed parts of the telescopic device 10 by the co-action of the two drive mechanisms described above is illustrated.
Fig. 9 is an initial state in which the fixed portions on both sides are closest to each other, and then fig. 10 shows that the left fixed slot 3 is rotated upward by 90 degrees by the cam rotation mechanism, and the fixed portions are displaced by the same distance in both the horizontal direction and the vertical direction, so that a drop in the vertical direction is generated between the two fixed portions. Then, the right side fixing groove 3 is displaced to the left side by a certain distance by the hydraulic pushing mechanism, so that the state in fig. 11 is formed, at this time, the horizontal clearance is reduced, and the impact effect of the tire on the left side fixing portion protruding toward the upper side can be increased in the impact test.
Similarly, in order to obtain the impact condition of the tire falling on the fixed part, the left fixed groove 3 is rotated downwards by 90 degrees, so that the top surface of the left fixed part is lowered, and the wheel moves from right to left to impact the fixed part downwards to form another impact mode.
It should be noted that, the cam rotating mechanism driven by the gear motor and the hydraulic pushing mechanism have obvious differences in the impact test, the hydraulic pushing mechanism cannot be used as a driving mechanism of the fixed slot 3 on one side of bearing the impact, and the force of the impact force acts on the pushing direction of the fixed slot because of the larger force, so that the potential safety hazard is caused by the excessive instantaneous pressure in the hydraulic cylinder 2. In the cam rotating mechanism, the fixed groove 3 and the bearing frame 1 are kept in a stable connection state through a plurality of groups of eccentric rotating frames 4. As shown in fig. 11, in the fall state in the generated figure, the test vehicle is displaced from right to left, the right side fixing groove 3 receives only the vehicle gravity and a certain friction force, and a direct impact force is applied to the fixing portion in the left side fixing groove 3. At this time, the fixing part receives a horizontal rightward force, and is distributed on the filler 12 and the anchoring bar 6, and finally transferred to the fixing groove 3, and is borne by the plurality of connecting rods and the eccentric turret 4. Due to the connection relation of the connecting rods, part of impact force is born by the connecting rods, and the deflection force deflected to the right side caused by the impact force is also born by the speed reducing motors at the two sides.
In this embodiment, the gear motor is a worm gear motor, which has a better torque bearing capacity, and the worm gear has a self-locking effect, so that the motor itself does not bear torque. The structure can ensure better structural stability under the condition of carrying out multiple cycle impact tests, and avoids the condition of cylinder explosion caused by directly adopting a hydraulic pushing mechanism.
If the connection mode of the vertical limit of the bearing frame 1 and the fixed groove 3 is adopted, the transmission part of the vertical pushing mechanism occupies a larger vertical space, and the requirement that the equipment is arranged on the ground for testing the rolling impact of the vehicle is not met. Meanwhile, the vertical pushing mechanism can bear the weight of the vehicle, and in a scene with smaller vertical adjustment distance, the vertical pushing mechanism has smaller structure and poorer bearing capacity, and the mechanism with larger bearing capacity has larger volume and cannot meet the installation requirement.
In another embodiment, the drive mechanism comprises a cam lift mechanism and a hydraulic push mechanism, wherein:
the cam lifting mechanism comprises a gear motor and rollers arranged on any sub-part, a cam is arranged on an output shaft of the gear motor, the rollers are in rolling contact with the side edges of the cam, a lifting frame is arranged on the bearing frame 1, the sub-part with the cam is movably connected with the lifting frame and limited by the lifting frame, and the sub-part is pushed to linearly move by being matched with the rollers when the cam rotates;
The hydraulic pushing mechanism comprises a plurality of hydraulic cylinders 2 connected with the other sub-part, the end parts of the hydraulic cylinders 2 push the sub-part to move on the bearing frame 1 in a straight line, and the moving direction of the hydraulic cylinders is perpendicular to the moving direction of the sub-part driven by the cam lifting mechanism.
The cam lifting mechanism is provided with a lifting frame, and the lifting frame is matched with the bearing frame 1 to form vertical displacement limit for the fixed groove 3 on one side, namely, the fixed groove 3 on the side can only perform reciprocating linear motion in the vertical direction along the lifting frame. The cam is fixed on a shaft seat arranged on the bearing frame 1, and the gear motor is in rotary connection with the cam on the shaft seat through a coupler. This arrangement also allows the impact force received by the fixing groove 3 to be transmitted to the carrier 1 without the gear motor receiving a large impact force.
In this embodiment, a testing method is also disclosed, and the above measuring device is used to perform impact testing on the telescopic devices 10 with several different structures.
Firstly, the bearing frame 1 is fixed in a sinking groove arranged on the ground or underground, and when the bearing frame is fixed on the ground, the fixed table 13 is provided with an inclined surface on the side far away from the telescopic device 10 for guiding the test vehicle to the fixed telescopic device 10; when being fixed in the sink, the fixing table 13 is arranged at the height of the side far away from the telescopic device 10 and is flush with the edge of the sink.
In one embodiment, as shown in fig. 1, a manner of operating and controlling the entire apparatus using a control cabinet as a control module is illustrated.
In another embodiment, a plurality of sinking grooves are formed in the ground of an annular field at equal intervals, the bearing frame 1 and the test part are arranged in the sinking grooves, the control cabinet is arranged on the ground, and the control cabinet is connected with corresponding modules of the test part through cables.
The carrier 1 is fixed in the sink, and two fixing grooves 3 as test parts are provided on the carrier 1, the left fixing groove 3 is controlled by a cam rotating mechanism, and the right sliding fixing groove 3 is controlled by a hydraulic pushing mechanism.
Before testing, the two-sided fixing groove 3 is moved to the nearest position, and then the assembled telescopic device 10 is placed on the test part.
The two fixing parts of the telescopic device 10 are respectively placed in the left fixing groove 3 and the right fixing groove 3, and the bottom surfaces of the fixing parts are abutted against the stop bars of the fixing groove 3.
And then the detachable connecting piece 9 is welded with the anchoring steel bars 6 of the fixed part in each fixed slot 3, the tensioning nut 8 is rotated to enable the end part of the tensioning screw 7 to be close to the detachable connecting piece 9, when the first connecting hole is aligned with the second connecting hole, a bolt or a bolt structure is inserted to fix the two parts, meanwhile, the tensioning nut 8 is screwed to tighten and fix the parts, all the fixed parts in each fixed slot 3 are sequentially tightened and fixed to realize fixed connection, a force sensor is arranged on the detachable connecting piece 9, and a cable is pulled out to be connected with a control cabinet.
And then filling the selected filler 12 into the corresponding fixed groove 3, and arranging different fillers 12 in the fixed grooves 3 at two sides for testing, wherein a gap between the fixed part and the fixed groove 3 at the opening is blocked by adopting a blocking material before filling the filler 12.
A pressure sensor is provided in the packing 12 to detect a pressure value to which the packing 12 is subjected.
The high-speed camera is arranged on the side part between the fixed grooves 3 to collect video of the passing vehicle tires.
After all the equipment is debugged, the gap and the height difference between the left fixed groove 3 and the right fixed groove 3 are adjusted through a control cabinet according to test requirements, a human driving test vehicle is firstly subjected to a circulating test in an annular field at a rated speed in a flush mode, the numerical values of all the sensors are recorded in the test, and meanwhile, the video of the telescopic device 10 is checked.
The height differences are adjusted in sequence according to the set gap and the height differences, as shown in fig. 8-11, and the maximum range of the height differences does not exceed the maximum height difference required by the national standard of the type of the telescopic device 10 currently tested. In the range of high difference value meeting national standard requirements, the gap of the telescopic device 10 is stretched for testing, the impact force born by the telescopic device 10 and the change of a fixed part are obtained, so that the change rules of the telescopic device 10 arranged by different types and the anchoring filler 12 when the telescopic device 10 faces the impact of an actual test vehicle are tested, whether the produced telescopic device 10 equipment can cause structural change of the telescopic device 10 at the joint position when the bridge is relatively displaced or not is judged, and a better testing means is provided for the safety test of the current road and bridge.
The invention is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.
Claims (9)
1. The utility model provides a road and bridge expansion joint data simulation experiment system that shocks resistance for to setting up telescoping device (10) between two adjacent roof beams of bridge road, its characterized in that: comprises a control part, a bearing frame (1) and a test part arranged on the bearing frame (1);
the control part is provided with an operation table, and the test part is controlled by the operation table;
the telescopic device (10) has two fixed parts and a telescopic part (11) arranged between the fixed parts; the test part comprises at least two sub-parts for simulating two adjacent beams, and the fixed parts of the tested telescopic device (10) are respectively fixed on the two sub-parts;
at least one sub-part is movably connected with the bearing frame (1), and the sub-part is driven by a driving mechanism arranged on the bearing frame (1) to drive the fixed part to spatially displace relative to the other fixed part and generate a height difference;
A fixed table (13) which is connected with the sub-part at intervals is arranged on the bearing frame (1), the fixed table (13) is provided with a test plane for a test vehicle to pass through, and the test plane is flush with the top of the telescopic device (10) fixed on the same side for the test vehicle to pass through the telescopic device (10) with the height difference;
a plurality of sensors and camera shooting components which are connected with a control part are arranged on the fixed table (13) and the telescopic device (10), the control part controls the driving mechanism to perform impact test on the telescopic device (10), and experimental data are acquired through the sensors and the camera shooting components;
the subsection is a fixed groove (3) with an accommodating space, and an opening for the telescopic part (11) of the telescopic device (10) to penetrate out is formed in one side of the fixed groove (3) facing the adjacent fixed groove (3); a fixing piece fixedly connected with the telescopic device (10) is arranged in the fixing groove (3);
the fixing parts of the telescopic device (10) are fixed in the adjacent fixing grooves (3) through fixing pieces, and the accommodating space of the fixing grooves (3) is filled with filling materials which cover and compress the fixing parts in the fixing grooves (3).
2. The road and bridge expansion joint impact resistance data simulation experiment system according to claim 1, wherein: the fixed groove (3) is provided with a baffle on the opposite side surface provided with an opening, and a plurality of through holes are arranged on the baffle;
The fixing piece is a rod piece penetrating through the through hole, and the rod piece is in limit connection with the baffle through a detachable fastener arranged on the rod piece;
the end of the rod piece in the fixing groove (3) is connected with the fixing part of the telescopic device (10) through a detachable connecting piece (9).
3. The road and bridge expansion joint impact resistance data simulation experiment system according to claim 2, wherein: the rod piece is a tensioning screw rod (7) with external threads, the fastening piece is a tensioning nut (8) rotationally connected with the baffle, the tensioning screw rod (7) passes through the tensioning nut (8) and is matched with the tensioning nut (8), and the tensioning nut (8) rotates to enable the tensioning screw rod (7) to reciprocate along the length direction.
4. The road and bridge expansion joint impact resistance data simulation experiment system according to claim 2, wherein: the detachable connecting piece (9) is provided with a first connecting hole, the end part of the rod piece, which is positioned in the fixing groove (3), is provided with a second connecting hole, and the detachable connecting piece is formed by aligning the axes of the first connecting hole and the second connecting hole and inserting a bolt.
5. The road and bridge expansion joint impact resistance data simulation experiment system according to claim 2, wherein: the fixing part of the telescopic device (10) comprises a plurality of U-shaped anchor bars (6), and the detachable connecting piece (9) is welded or clamped with the anchor bars (6).
6. The road and bridge expansion joint impact resistance data simulation experiment system according to any one of claims 1-5, wherein: the driving mechanism comprises a cam rotating mechanism, and the cam rotating mechanism comprises a gear motor and a plurality of eccentric rotating mechanisms;
the eccentric rotating mechanism comprises two mutually hinged parts which are respectively connected with the sub-part and the bearing frame (1), the hinge shafts of the two mutually hinged parts of the eccentric rotating mechanism are not coaxial, and the rotation circle centers of all the eccentric rotating mechanisms are collinear;
the gear motor is rotationally connected with any one of the eccentric rotating mechanisms, and the output shaft of the gear motor is aligned with the rotating circle center of the eccentric rotating mechanism.
7. The road and bridge expansion joint impact resistance data simulation experiment system according to any one of claims 1-5, wherein: the driving mechanism comprises a cam lifting mechanism and a hydraulic pushing mechanism, wherein:
the cam lifting mechanism comprises a gear motor and rollers arranged on any sub-part, a cam is arranged on an output shaft of the gear motor, the rollers are in rolling contact with the side edges of the cam, a lifting frame is arranged on the bearing frame (1), the sub-part with the cam is movably connected with the lifting frame and limited by the lifting frame, and the sub-part is pushed to linearly move by being matched with the rollers when the cam rotates;
The hydraulic pushing mechanism comprises a plurality of hydraulic cylinders (2) connected with the other sub-part, the end parts of the hydraulic cylinders (2) push the sub-part to move linearly on the bearing frame (1), and the moving direction of the hydraulic cylinders is perpendicular to the moving direction of the sub-part driven by the cam lifting mechanism.
8. The road and bridge expansion joint impact resistance data simulation experiment system according to any one of claims 3-5, wherein: the sensors are arranged in the telescopic device (10), the fixed groove (3) and the fixed table (13) for data acquisition;
the bearing frame (1) is fixed in a sinking groove arranged on the ground or underground, and when the bearing frame is fixed on the ground, the fixed table (13) is provided with an inclined plane which guides a test vehicle to drive to the fixed telescopic device (10) at one side far away from the telescopic device (10); when being fixed in the sinking groove, the fixing table (13) is arranged at the height of one side far away from the telescopic device (10) and is flush with the edge of the sinking groove.
9. An experimental method is characterized in that: the road and bridge expansion joint impact resistance data simulation experiment system adopting the method in the claim 8 comprises the following specific steps:
G100. firstly, determining an experiment site, defining a required annular closed experiment lane, and determining a region provided with an experiment part on the experiment lane for scribing and positioning;
G200. Setting a test part on the ground with marking and positioning or in a sinking groove arranged on the ground, then installing and connecting a driving mechanism and a fixed table (13), and installing a control part on the ground which is close to the test part outside an experiment lane;
G300. the two fixing grooves (3) of the test part are moved to the initial position by the driving mechanism to be arranged in a flush manner, and the telescopic device (10) to be tested is respectively arranged on the two fixing grooves (3) of the test part;
G400. connecting the fixed part of the telescopic device (10) with a fixed part, arranging sensors at the connecting part and the telescopic part, pulling out a cable to be connected with a control part, filling filler in the area of the fixed part connected with the fixed groove (3), and compacting and fixing;
G500. adjusting the position of the fixing table (13) to enable the gap between the fixing groove (3) and the fixing table (13) to be larger than the moving range of the fixing groove (3), driving one or two groups of fixing grooves (3) to move by a control part control driving mechanism to form a drop, and arranging a baffle at the gap between the fixing table (13) and the fixing groove (3) after fixing;
G600. calibrating a sensor at a console, entering a test flow, driving a test vehicle to run at a constant speed on an experimental road, recording sensor data and video data when the test vehicle passes through the telescopic device (10) each time, analyzing according to the data, and carrying out backtracking analysis on the acquired data under the condition that the telescopic device (10) is damaged and a filled filler area is damaged;
G700. And taking down the tested fixed slot and replacing the new fixed slot for the next round of testing.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0382681A1 (en) * | 1989-02-06 | 1990-08-16 | Robert Warthmann | Roller cover for bridging-joints, especially for expansion joints in bridge decks |
| KR20070000971A (en) * | 2006-01-20 | 2007-01-03 | 김효식 | Expansion and contraction joint |
| CN208183525U (en) * | 2017-12-26 | 2018-12-04 | 王明明 | A kind of hydraulic combined type bridge extension joint |
| JP2019039274A (en) * | 2017-08-29 | 2019-03-14 | 横浜ゴム株式会社 | Filling structure for road bridge expansion device |
| CN209640103U (en) * | 2018-12-25 | 2019-11-15 | 中交路桥科技有限公司 | A kind of bridge expanssion joint experimental rig |
| CN217155831U (en) * | 2022-04-29 | 2022-08-09 | 重庆大学 | Dock expansion joint vehicle-jumping impact mechanical response test equipment |
| CN217155786U (en) * | 2022-06-22 | 2022-08-09 | 四川蜀工公路工程试验检测有限公司 | Bump road sign shock resistance survey device |
| CN217358816U (en) * | 2022-07-25 | 2022-09-02 | 潍坊华泰路桥工程有限公司 | Road bridge expansion joint test device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3474325D1 (en) * | 1984-06-08 | 1988-11-03 | Maurer Friedrich Soehne | Bridging device for expansion joints in bridges or the like |
| CN105510020B (en) * | 2016-01-20 | 2017-09-29 | 宁波大学 | A kind of variable-width bridge expanssion joint test platform and its construction method |
| CN207130614U (en) * | 2017-07-21 | 2018-03-23 | 衡水中盛工程橡胶有限公司 | A kind of universal deflection modular expansion device |
| CN209858200U (en) * | 2019-06-30 | 2019-12-27 | 衡水中铁建工程橡胶有限责任公司 | Experimental facility of modulus formula bridge telescoping device |
| CN112458890B (en) * | 2020-11-20 | 2022-12-23 | 四川新路桥特种技术工程有限公司 | Bridge expansion device and support remote real-time monitoring system and method |
| CN113567072B (en) * | 2021-04-30 | 2022-09-30 | 东南大学 | Simulation experiment device and method for bridge expansion joint crack propagation |
| CN216669193U (en) * | 2021-12-22 | 2022-06-03 | 中交公路养护工程技术有限公司 | Bridge expansion joint health condition monitoring system based on audio and video |
| CN115307891A (en) * | 2022-08-13 | 2022-11-08 | 杭州市交通工程试验检测中心有限公司 | Expansion joint tester |
-
2023
- 2023-04-10 CN CN202310373025.5A patent/CN116105958B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0382681A1 (en) * | 1989-02-06 | 1990-08-16 | Robert Warthmann | Roller cover for bridging-joints, especially for expansion joints in bridge decks |
| KR20070000971A (en) * | 2006-01-20 | 2007-01-03 | 김효식 | Expansion and contraction joint |
| JP2019039274A (en) * | 2017-08-29 | 2019-03-14 | 横浜ゴム株式会社 | Filling structure for road bridge expansion device |
| CN208183525U (en) * | 2017-12-26 | 2018-12-04 | 王明明 | A kind of hydraulic combined type bridge extension joint |
| CN209640103U (en) * | 2018-12-25 | 2019-11-15 | 中交路桥科技有限公司 | A kind of bridge expanssion joint experimental rig |
| CN217155831U (en) * | 2022-04-29 | 2022-08-09 | 重庆大学 | Dock expansion joint vehicle-jumping impact mechanical response test equipment |
| CN217155786U (en) * | 2022-06-22 | 2022-08-09 | 四川蜀工公路工程试验检测有限公司 | Bump road sign shock resistance survey device |
| CN217358816U (en) * | 2022-07-25 | 2022-09-02 | 潍坊华泰路桥工程有限公司 | Road bridge expansion joint test device |
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