CN111576130A - Road and bridge connection control system and construction method thereof - Google Patents
Road and bridge connection control system and construction method thereof Download PDFInfo
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- CN111576130A CN111576130A CN202010495405.2A CN202010495405A CN111576130A CN 111576130 A CN111576130 A CN 111576130A CN 202010495405 A CN202010495405 A CN 202010495405A CN 111576130 A CN111576130 A CN 111576130A
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- truss
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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Abstract
The invention provides a road and bridge connection control system and a construction method thereof, belonging to the technical field of road and bridge transition section construction and comprising a plurality of transition units, wherein each transition unit comprises a top bearing structure, a spring damping shock absorption structure, a middle-layer supporting structure, a height adjusting structure, a settlement displacement sensing structure and a bottom-layer supporting structure; the top bearing structure is used for forming a road surface, and the spring damping shock absorption structure is supported below the top bearing structure; the middle-layer supporting structure is arranged below the spring damping shock absorption structure, the height adjusting structure is supported below the middle-layer supporting structure, and the settlement displacement sensing structure is arranged below the top bearing structure; the bottom layer supporting structure is supported below the height adjusting structure; the height adjusting structure and the settlement displacement sensing structure are both in communication connection with the controller. The road and bridge connection control system and the construction method thereof can adjust the flatness of the road surface between the road and the bridge without complex repair construction, slow down the rigidity change rate and realize stable transition.
Description
Technical Field
The invention belongs to the technical field of road and bridge transition section construction, and particularly relates to a road and bridge connection control system.
Background
With the rapid development of highway and bridge construction technologies, the number of the highways and the bridges is rapidly increased, the construction grade and level are gradually improved, and stable driving can be realized on highway pavements and bridge decks. However, the connection between the road surface and the bridge floor always has the problem of large rigidity difference between the road and the bridge, and the phenomenon of bridge jumping is also generated due to different settlement amounts, so that drivers and passengers in running vehicles feel uncomfortable to ride, and even the vehicles are greatly decelerated. When the settlement amount has a large difference, a serious vehicle jumping phenomenon may cause traffic accidents (particularly, mechanical accidents of vehicles), and the impact of the vehicles may also cause damage to the joints between roads and bridges, thereby increasing the burden on road construction and maintenance work.
The settlement of the bridge and the road is simultaneously generated under the action of vehicle load, structural dead weight and natural factors due to the difference of the composition materials, the rigidity, the strength, the expansion and contraction performance and the like of the bridge, the roadbed and the road surface, but the settlement of the bridge and the road is greatly different, the settlement of the flexible road is far greater than that of the rigid bridge, uneven settlement is generated at the joint of the bridge and the road surface, and the dislocation is generated. Moreover, concentrated stress is easily formed at the bridge joint when the stress is applied, the impact of vehicles can greatly damage roads and the bridge joint, the damage to the bridges and the road surface is accelerated, the influence on the operation of the roads and the bridges is great, and the attached economic loss and traffic accidents are increased day by day.
At present, some researches propose technical means for improving the connection between a road and a bridge, which may be effective in a period of time at the beginning, but when the road is vibrated and rolled by a heavy vehicle for a long time, the deformation and settlement of the road surface are large, so that the difference between the connection position between the road surface and the bridge deck is larger and larger; when the condition is serious and the vehicle cannot normally drive, the maintenance department can gradually construct and repair the vehicle, the repair process consumes time, the traffic is influenced, and the indirect economic loss is large. Meanwhile, the rigidity of the transition section of the road and bridge is difficult to adjust by the traditional technical means, and the smooth transition between the road and the bridge is still difficult to realize.
Disclosure of Invention
The invention aims to provide a road and bridge connection control system and a construction method thereof, and aims to solve the technical problems that the settlement amount and the rigidity of a transition section are difficult to adjust by the technology for improving the connection between a road and a bridge, the influence of later maintenance and construction is large, and the stable transition between the road and the bridge is difficult to realize in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a road-bridge connection control system including a plurality of transition units arranged in a road-to-bridge direction, each of the transition units including:
a top load bearing structure for forming a roadway;
the spring damping shock absorption structure is supported below the top bearing structure;
the middle-layer supporting structure is arranged below the spring damping shock absorption structure;
the height adjusting structure is supported below the middle layer supporting structure and used for driving the middle layer supporting structure to lift;
the settlement displacement sensing structure is arranged below the top bearing structure and used for sensing the settlement amount of the top bearing structure; and
the bottom layer supporting structure is arranged on the soil foundation and is supported below the height adjusting structure;
the height adjusting structure and the settlement displacement sensing structure in each transition unit are in communication connection with a controller, and the controller is used for controlling the height adjusting structure to adjust the height of the top bearing structure according to signals fed back by the settlement displacement sensing structure.
As another embodiment of the present application, the spring damping shock-absorbing structure includes:
a guide sleeve;
the buffer spring is arranged in the guide sleeve and used for stretching along the guide direction of the guide sleeve; and
and the damping piece is arranged in the guide sleeve.
As another embodiment of the present application, the top load bearing structure comprises:
a pavement structure layer;
the rigid plate bearing layer is supported below the pavement structure layer; and
and the spring damping shock absorption structure is at least supported at the intersection point of the cross beam and the longitudinal beam of the first truss.
As another embodiment of the present application, the spring damping shock-absorbing structure is respectively supported at the intersection of the cross beam and the longitudinal beam of the first truss, at the cross beam of the first truss and at the longitudinal beam of the first truss.
As another embodiment of the present application, the middle support structure includes a second truss, and the second truss and the first truss overlap each other in an up-down direction; the spring damping shock absorption structure is at least arranged at the intersection point of the second truss cross beam and the longitudinal beam, and the height adjusting structure is supported at the intersection point of the second truss cross beam and the longitudinal beam.
As another embodiment of the present application, the spring damping shock-absorbing structures are respectively disposed at the intersection point of the cross beam and the longitudinal beam of the second truss, at the cross beam of the second truss, and at the longitudinal beam of the second truss.
As another embodiment of the present application, the bottom supporting structure comprises a transverse continuous wall and a longitudinal continuous wall, the transverse continuous wall and the longitudinal continuous wall are arranged in a crossed manner, and the height adjusting structure is arranged at the crossed point of the transverse continuous wall and the longitudinal continuous wall.
As another embodiment of this application, subside displacement sensing structure and locate around the altitude mixture control structure, subside displacement sensing structure for subsiding displacement sensor, subside displacement sensor and be the strip, the top connect in the rigid plate bearer layer, the bottom is deepened and is in place in the soil matrix of bottom bearing structure below.
The road bridge connection control system provided by the invention has the beneficial effects that: compared with the prior art, the road and bridge connection control system has the advantages that multiple sections of transition units are arranged between a road and a bridge, the height adjusting structure is arranged below the top bearing structure of each section of transition unit, the settlement displacement sensing structure senses the settlement amount of each section of transition unit and feeds the settlement amount back to the controller, the controller controls the height adjusting structure in each section of transition unit to ascend and descend according to feedback data, the top bearing structure is driven to ascend, the height of the top bearing structure in each section of transition unit is adjusted, the flatness of the road surface between the road and the bridge is adjusted, a reasonable and gentle slope can be formed between the bridge and the road, and the phenomenon of vehicle jumping is avoided; meanwhile, because the spring damping shock absorption structures are arranged below the top bearing structures in each section of transition unit, the rigidity of the spring damping shock absorption structures in different transition units can be adjusted according to needs, so that the rigidity value of each section of transition unit can be gradually increased along the direction from a road to a bridge, the transition distance is lengthened, the change rate of the rigidity is reduced, and the stable transition is realized.
The invention also provides a construction method of the road and bridge connection control system, which is used for constructing the road and bridge connection control system and comprises the following steps:
building the bottom layer supporting structure on the soil foundation between the highway and the bridge;
mounting the height adjustment structure on the underlying support structure;
mounting the middle layer support structure above the height adjustment structure;
the spring damping shock absorption structure is arranged on the middle layer supporting structure;
building the top load-bearing structure above the spring-damped shock absorbing structure;
and repeating the steps until the construction of each transition unit is completed one by one.
As another embodiment of the present application, after the mounting of the spring damping shock-absorbing structure on the middle layer supporting structure, the method further comprises:
and adjusting the rigidity of the spring damping shock absorption structures in the transition units to ensure that the rigidity of the spring damping shock absorption structures in the same transition unit is the same, and the rigidity of the spring damping shock absorption structures in different transition units is gradually increased along the direction from the road to the bridge.
The beneficial effects of the construction method of the road and bridge connection control system provided by the invention are the same as those of the road and bridge connection control system, and are not described again here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic front view of a road bridge connection control system according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a partial cross-sectional view A-A of FIG. 1;
FIG. 5 is a schematic top view of the portion of FIG. 1;
FIG. 6 is a partial cross-sectional view C-C of FIG. 1;
fig. 7 is a partial sectional view of D-D of fig. 1.
In the figure: 100. a bridge deck; 200. an abutment; 300. a transition unit; 310. a top load bearing structure; 311. a pavement structure layer; 312. a rigid plate carrier layer; 313. a first truss; 320. a spring damping shock-absorbing structure; 321. a guide sleeve; 321a and a cylinder body; 321b, a cover body; 321c, a sealing ring; 322. a buffer spring; 323. a damping member; 330. a middle layer support structure; 331. a second truss; 340. a height adjustment structure; 350. a settlement displacement sensing structure; 360. a bottom layer support structure; 361. a transverse continuous wall; 362. a longitudinal continuous wall.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 7, a road bridge connection control system according to the present invention will now be described. The road and bridge connection control system comprises a plurality of transition units 300 arranged along the direction from a road to a bridge, wherein each transition unit 300 comprises a top bearing structure 310, a spring damping shock absorption structure 320, a middle layer supporting structure 330, a height adjusting structure 340, a settlement displacement sensing structure 350 and a bottom layer supporting structure 360; the top load-bearing structure 310 is used to form a road surface, and the spring-damping shock-absorbing structure 320 is supported below the top load-bearing structure 310; the middle supporting structure 330 is disposed below the spring damping shock-absorbing structure 320, the height adjusting structure 340 is supported below the middle supporting structure 330 for driving the middle supporting structure 330 to go up and down, the settlement displacement sensing structure 350 is disposed below the top bearing structure 310 for sensing the settlement of the top bearing structure 310, and the bottom supporting structure 360 is disposed on the soil foundation and supported below the height adjusting structure 340.
The height adjusting structure 340 and the settlement displacement sensing structure 350 in each transition unit are in communication connection with a controller, and the controller is used for controlling the height adjusting structure 340 to adjust the height of the top bearing structure 310 according to signals fed back by the settlement displacement sensing structure 350.
The top surface of the top bearing structure 310 forms a road surface similar to a highway road surface, and lane marks are provided on the road surface.
Compared with the prior art, the road and bridge connection control system provided by the invention has the advantages that a plurality of sections of transition units are arranged between the road and the bridge, the height adjusting structure 340 is arranged below the top bearing structure 310 of each section of transition unit 300, the settlement displacement sensing structure 350 senses the settlement amount of each section of transition unit 300, and feeds back the data to the controller, the controller controls the height adjusting structure 340 in each section of the transition unit 300 to lift and fall according to the fed back data, thereby driving the top bearing structure 310 to rise, further adjusting the height of the top bearing structure in each section of the transition unit 300, adjusting the flatness of the road surface between the highway and the bridge without complicated repair construction or underground construction operation, a reasonable and gentle slope can be formed between the bridge and the highway, the phenomenon of vehicle jumping is avoided, the later-period overhauling frequency can be reduced, and the social economy is improved; meanwhile, as the spring damping and shock absorbing structure 320 is arranged below the top bearing structure 310 in each transition unit 300, the rigidity of the spring damping and shock absorbing structure 320 in different transition units 300 can be adjusted according to needs, so that the rigidity value of each transition unit 300 can be gradually increased along the direction from a road to a bridge, the flexibility index of the road is well simulated, the driving feeling of vehicles is basically the same, the transition distance is lengthened, the change rate of the rigidity is reduced, the gradually-changed moderate connection is formed, and the stable transition is further realized.
Specifically, for convenient operation, the controller is arranged on the side wall of the bridge, and the power supply of the whole system is from the street lamp lines of the bridge and the highway without additionally arranging a power supply system.
Specifically, the settlement displacement sensing structures 350 may not be turned on at a general time interval, when detection is required, the power supply is turned on, the controller displays the numerical value of each settlement displacement sensing structure 350, when the numerical value of the settlement displacement sensing structure 350 is abnormal, for example, the transition unit 300 is damaged by the outside (for example, an unexpected disaster occurs), the settlement value exceeds a set settlement threshold, and at this time, an alarm is given, and an alarm signal may transmit information to a mobile phone short message of a detection engineer or other detection receiving points through a wireless line; in a normal state, if the height needs to be adjusted, an engineer may set "auto-adjustment" in which the controller controls different levels according to the sensing data of each settlement displacement sensing structure 350. The data detection time period is set by an engineer, and can be adjusted at a later stage.
As an embodiment of the road and bridge connection control system provided by the present invention, please refer to fig. 1 and 2, the height adjusting structure 340 is a jack.
As a specific embodiment of the road and bridge connection control system provided by the present invention, please refer to fig. 1 and 2, the spring damping shock absorption structure 320 includes a guiding sleeve 321, a buffering spring 322 and a damping element 323; the buffer spring 322 is disposed in the guide sleeve 321 for extending and contracting along the guide of the guide sleeve 321, and the damping member 323 is disposed in the guide sleeve 321. The guide sleeve 321 is made of metal, the strength is high, the guide sleeve is used for preventing the buffer spring 322 from deflecting in the telescopic process, the buffer spring 322 is used for reducing pressure impact on the top bearing structure 310, the damping piece 323 is used for preventing the buffer spring 322 from rebounding, the buffer spring 322 and the damping piece 323 are matched with each other for scientific calculation, the rigidity value of each section of the transition unit 300 can be accurately set, and the possibility is provided for realizing stable transition.
It should be noted that the relative positions of the buffer spring 322 and the damping member 323 can be set according to the actual use environment, the buffer spring 322 can be sleeved outside the damping member 323, the damping member 323 can also be disposed outside the buffer spring 322, and further, the specific structure of the spring damping shock absorption structure 320 is not limited to the structure in the drawings in the specification.
Referring to fig. 1 and 2, the guiding sleeve 321 includes a cylinder 321a and a cover 321b covering the cylinder 321a, and a sealing ring 321c is disposed between the cylinder 321a and the cover 321 b. The sealing ring 321c is an elastic member, and when the sealing ring 321c is installed, the buffer spring 322 and the damping member 323 are firstly placed in the cylinder 321a, and then the cover body 321b is covered, so that water or mud can be prevented from entering the cylinder 321a through the sealing ring 321c to pollute the buffer spring 322 and the damping member 323.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 7, the top bearing structure 310 includes a pavement structure layer 311, a rigid plate bearing layer 312, and a first truss 313; the rigid plate bearing layer 312 is supported below the pavement structure layer 311, the first truss 313 is supported below the rigid plate bearing layer 312, and the spring damping shock absorption structure 320 is at least supported at the intersection point of the cross beam and the longitudinal beam of the first truss 313.
The rigid plate bearing layer 312 is used for supporting the pavement structure layer 311, preventing the pavement structure layer 311 from locally collapsing, and facilitating pouring construction; the first truss 313 is supported below the rigid plate bearing layer 312 and used for dispersing the jacking extrusion force of the spring damping shock absorption structure 320 on the rigid plate bearing layer 312, so that the rigid plate bearing layer 312 is stressed more uniformly, the service life of the rigid plate bearing layer 312 is prolonged, and the upper pavement structure layer 311 is not easy to damage; the spring damping structure 320 is widely and uniformly distributed, and can protect the rigid board bearing layer 312, so that the rigid board bearing layer 312 is not easy to deform when being pressed, and also protect the upper pavement structure layer 311, so that the pressure can be uniformly transmitted downwards when being pressed.
Specifically, the rigid plate bearing layer 312 is a steel plate, which is convenient to obtain materials, low in construction cost and strong in bearing capacity.
Referring to fig. 1 to 7, as a specific embodiment of the present invention, a spring damping shock-absorbing structure 323 is supported at an intersection of a cross beam and a longitudinal beam of the first girder 313, at a cross beam of the first girder 313, and at a longitudinal beam of the first girder 313, respectively. The distribution mode further expands the distribution range and the distribution density of the spring damping shock absorption structures 323, and can more effectively protect the rigid plate bearing layer 312.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1, 2 and 4, the middle layer supporting structure 330 includes a second truss 331, and the second truss 331 and the first truss 313 are overlapped with each other in the up-down direction; the spring-damping shock-absorbing structure 320 is at least provided at the intersection of the cross beam and the longitudinal beam of the second girder 331, and the height adjusting structure 340 is supported at the intersection of the cross beam and the longitudinal beam of the second girder 331. The height adjusting structure 340 is supported at the intersection of the cross beam and the longitudinal beam of the second truss 331, so that the stress at the intersection can be uniformly transmitted upwards, and the height adjusting structure 340 is not needed to be arranged at other positions of the second truss 331.
Referring to fig. 4, in order to match the structure of the first truss 313, spring damping shock-absorbing structures 320 are respectively disposed at the intersection of the cross beam and the longitudinal beam of the second truss 331, the cross beam of the second truss 331 and the longitudinal beam of the second truss 331, as a specific implementation manner of the embodiment of the present invention.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 7, the bottom supporting structure 360 includes a transverse continuous wall 361 and a longitudinal continuous wall 362, the transverse continuous wall 361 and the longitudinal continuous wall 362 are arranged in a crossed manner, and the height adjusting structure 340 is arranged at a crossing point of the transverse continuous wall 361 and the longitudinal continuous wall 362. The transverse continuous wall 361 and the longitudinal continuous wall 362 are located on the soil foundation and can be settled along with the settlement of the soil foundation, and the jacks are arranged at the intersection points of the transverse continuous wall 361 and the longitudinal continuous wall 362, so that the force of the soil foundation below the bottom layer supporting structure 360 can be more uniform.
Specifically, the distribution of the transverse continuous wall 361 and the longitudinal continuous wall 362 is basically consistent with that of the cross beams and the longitudinal beams in the first truss 313 and the second truss 331, the upper surface of the jack supports the intersection point of the second truss 331, and the lower layer of the jack is pressed at the intersection point of the transverse continuous wall 361 and the longitudinal continuous wall 362 to support the upper layer structure, so that the stress of the second truss 331 is uniform; meanwhile, the pressure of the jack on the underlying structure is also at the intersection point, and the transverse continuous wall 361 and the longitudinal continuous wall 362 uniformly disperse the pressure brought by the jack into the foundation, so that the subsidence is reduced.
It should be noted that the first truss 313 and the second truss 331 are both latticed frame bodies formed by intersecting cross beams and longitudinal beams, the cross beams of the first truss 313 and the second truss 331 respectively refer to beams with long axes perpendicular to the direction from the highway to the bridge, and the longitudinal beams of the first truss 313 and the second truss 331 are perpendicular to the cross beams; the transverse continuous wall 361 refers to a wall body with a wall surface perpendicular to the direction from the road to the bridge, and the longitudinal continuous wall 362 is arranged perpendicular to the transverse continuous wall 361.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 7, the sedimentation displacement sensing structure 350 is disposed around the height adjusting structure 340, the sedimentation displacement sensing structure 350 is a sedimentation displacement sensor, the sedimentation displacement sensor is in a strip shape, the top end of the sedimentation displacement sensor is connected to the rigid board bearing layer 312, the position of the sedimentation displacement sensing structure 350 changes along with the lifting of the rigid board bearing layer 312, and the bottom end of the sedimentation displacement sensing structure 350 is deep into the soil foundation below the bottom layer supporting structure 360, so as to ensure the stability of the sedimentation displacement sensing structure 350 as a whole. The settlement displacement sensors are arranged close to the height adjusting structure 340, the settlement height of the position where the height adjusting structure 340 is located is basically the same as the data sensed by the settlement displacement sensors, and the lifting of each height adjusting structure 340 is controlled according to the data of the settlement displacement sensors nearby, so that the height of the road surface is adjusted more uniformly, reasonably and accurately.
As a specific implementation manner of the embodiment of the present invention, the pavement structure layer 311 has the same area as the rigid board bearing layer 312, and the edge of the first truss 313 extends to the edge of the rigid board bearing layer 312.
Specifically, in the first truss 313, the distance between adjacent beams is 1.5 m; in the second truss 331, the adjacent beams are spaced apart by 1.5 m.
In particular, since the highway and bridge are generally separated in both directions. In the middle of the roadway there is a longitudinal beam of the truss, so the width of the single transition unit 300 is designed according to the width of a half-width deck.
As a specific implementation manner of the embodiment of the present invention, the length of the road surface structure layer 311 in the direction from the highway to the bridge is 8m to 12 m. Alternatively, the length of the pavement structure layer 311 in the road-to-bridge direction is 10 m. The length of the pavement structure layer 311 basically represents the length of each section of the transition unit 300, the length setting of the pavement structure layer can meet the requirement of vehicle passing, meanwhile, the gradient and the rigidity of the transition area can be adjusted conveniently, and the driving comfort level is improved.
As a specific implementation of the embodiment of the present invention, the height of the transverse continuous wall 361 and the longitudinal continuous wall 362 is 1.5 m.
After the road and bridge connection control system is adopted, after a road bridge is built and used for a period of time, impact and instability can be caused by the difference of rigidity between the road and the bridge; and the transition units 300 with different spring damping coefficients are added in multiple sections, so that the stability and comfort of the road to the bridge are greatly improved.
The invention also provides a construction method of the road and bridge connection control system, which is used for constructing the road and bridge connection control system and comprises the following steps:
building a bottom support structure 360 on the foundation between the highway and the bridge;
mounting a height adjustment structure 350 on the underlying support structure 360;
mounting the middle support structure 330 above the height adjustment structure 350;
mounting a spring damping shock absorbing structure 320 on the middle support structure 330;
building a top load-bearing structure 310 over the spring-damped shock absorbing structure 320;
the above steps are repeated until the construction of each transition unit 300 is completed one by one.
The beneficial effects of the construction method of the road and bridge connection control system provided by the invention are the same as those of the road and bridge connection control system, and are not described again here.
As a specific implementation manner of the embodiment of the present invention, after the spring damping shock-absorbing structure 320 is installed on the middle layer supporting structure 330, the method further includes:
the stiffness of the spring damping shock absorption structures 320 in each transition unit 300 is adjusted, so that the stiffness of the spring damping shock absorption structures 320 in the same transition unit 300 is the same, and the stiffness of the spring damping shock absorption structures 320 in different transition units 300 is gradually increased along the direction from the road to the bridge.
Specifically, taking three transition units 300 as an example, the rigidity of the first transition unit 300 close to the bridge is close to that of the bridge, the rigidity of the second transition unit 300 is reduced a little, and the rigidity of the third transition unit 300 is reduced a little, and is closer to that of the road surface. Since the rigidity of the plurality of transition units 300 is sequentially changed, a gradually changing connection is formed between the road surface of the road and the bridge, so that the driving feeling of the vehicle is continuous with the road, and the driving comfort of the road surface is increased.
As a specific implementation manner of the embodiment of the present invention, after completing the construction of each transition unit 300, the method further includes:
the controller is respectively connected with the height adjusting structure 340 and the settlement displacement sensing structure 350 in each transition unit 300 in a communication way;
the height adjusting structures 340 are adjusted and controlled by the controller, so that the top bearing structures 310 in the transition units 300 are respectively located at the designated height;
if the height of the highway pavement is consistent with that of the bridge deck, the pavement of the top bearing structure 310 in each transition unit 300 is flush with the highway pavement and the bridge deck;
if the road surface subsides below the bridge floor, the road surface height of the top bearing structure 310 in each transition unit 300 gradually increases along the road-to-bridge direction to form a step shape having a certain slope.
As a specific implementation manner of the embodiment of the invention, in the transition unit 300 adjacent to the bridge, the top surface of the top bearing structure is 3mm-5mm higher than the bridge floor, when a vehicle runs at the position, the self load of the vehicle body can sink the height of the transition zone, so that the transition zone is consistent with the bridge floor, the smoothness is consistent, and the vehicle can stably pass.
In a specific implementation process, the height difference is obtained through calculation, and the specific calculation process is as follows:
if the half-width of the added road bridge connection control system for accurately measuring and automatically adjusting the height is 15m, and the length is 10m, the total area is as follows: 10m 15m 150m2. The structure, density and mass of the pavement structure layer are shown in table 1 below:
TABLE 1 Structure, Density and Mass of pavement Structure layers
| Pavement material | Density (t/m)3) | Weight (t) |
| 3cm fine particle type asphalt mixture | 2.351 | 10.58 |
| 4cm medium particle type asphalt mixture | 2.358 | 14.15 |
| 6cm coarse grain type asphalt mixture | 2.365 | 21.29 |
| 18cm cement stabilized macadam | 2.278 | 61.51 |
| 18cm cement stabilized macadam | 2.278 | 61.51 |
| 20cm cement stabilized soil | 1.75 | 52.5 |
| 2cm steel plate layer | 7.8 | 23.4 |
| In total | 244.94 |
The spring parallel stiffness coefficient is calculated as follows:
k＝k1+k2+k3+…+kn
the damping coefficient is calculated in parallel as follows:
c＝c1+c2+c3+…+cn
according to the kinetic formula:
m represents the total mass of the load; c-represents total damping; k-represents the total stiffness and p-represents the total load.
The top surface of a top bearing structure of a transition unit adjacent to a bridge is higher than the bridge floor by 3-5 mm because the maximum vertical deformation is calculated by adopting the heavy vehicle load of 30t-40t, the spring stiffness coefficient of 4.2 x 106(N/m) and the damper coefficient of 5.3 x 105 (N.s/m).
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Road bridge connection control system locates between highway and the bridge, its characterized in that, including a plurality of transition units that set up to the bridge direction along the highway, every the transition unit all includes:
a top load bearing structure for forming a roadway;
the spring damping shock absorption structure is supported below the top bearing structure;
the middle-layer supporting structure is arranged below the spring damping shock absorption structure;
the height adjusting structure is supported below the middle layer supporting structure and used for driving the middle layer supporting structure to lift;
the settlement displacement sensing structure is arranged below the top bearing structure and used for sensing the settlement amount of the top bearing structure; and
the bottom layer supporting structure is arranged on the soil foundation and is supported below the height adjusting structure;
the height adjusting structure and the settlement displacement sensing structure in each transition unit are in communication connection with a controller, and the controller is used for controlling the height adjusting structure to adjust the height of the top bearing structure according to signals fed back by the settlement displacement sensing structure.
2. The road-bridge connection control system of claim 1, wherein the spring-damping shock-absorbing structure comprises:
a guide sleeve;
the buffer spring is arranged in the guide sleeve and used for stretching along the guide direction of the guide sleeve; and
and the damping piece is arranged in the guide sleeve.
3. The road-bridge connection control system of claim 1, wherein the top load-bearing structure comprises:
a pavement structure layer;
the rigid plate bearing layer is supported below the pavement structure layer; and
and the spring damping shock absorption structure is at least supported at the intersection point of the cross beam and the longitudinal beam of the first truss.
4. The road-bridge connection control system of claim 3, wherein the spring-damped shock absorbing structure is supported at the intersection of the first truss beam and the longitudinal beam, at the beam of the first truss, and at the longitudinal beam of the first truss, respectively.
5. The road-bridge connection control system of claim 3, wherein the middle supporting structure comprises a second truss, and the second truss and the first truss are overlapped with each other in an up-down direction; the spring damping shock absorption structure is at least arranged at the intersection point of the second truss cross beam and the longitudinal beam, and the height adjusting structure is supported at the intersection point of the second truss cross beam and the longitudinal beam.
6. The road-bridge connection control system of claim 5, wherein the spring-damping shock-absorbing structures are respectively provided at the intersections of the beams and stringers of the second truss, at the beams of the second truss and at the stringers of the second truss.
7. The road-bridge connection control system of claim 5, wherein the bottom supporting structure comprises a transverse continuous wall and a longitudinal continuous wall, the transverse continuous wall and the longitudinal continuous wall are arranged in a crossed manner, and the height adjusting structure is arranged at the crossed point of the transverse continuous wall and the longitudinal continuous wall.
8. The road and bridge connection control system of claim 3, wherein the settlement displacement sensing structure is disposed around the height adjustment structure, and the settlement displacement sensing structure is a settlement displacement sensor, and the settlement displacement sensor is in the form of a strip, and has a top end connected to the rigid plate bearing layer and a bottom end penetrating into the soil foundation below the bottom layer support structure.
9. Method for constructing a road and bridge connection control system, characterised in that it is used for constructing a road and bridge connection control system according to any one of claims 1-8, comprising the following steps:
building the bottom layer supporting structure on the soil foundation between the highway and the bridge;
mounting the height adjustment structure on the underlying support structure;
mounting the middle layer support structure above the height adjustment structure;
the spring damping shock absorption structure is arranged on the middle layer supporting structure;
building the top load-bearing structure above the spring-damped shock absorbing structure;
and repeating the steps until the construction of each transition unit is completed one by one.
10. The construction method of road and bridge connection control system according to claim 9, wherein after installing the spring damping shock-absorbing structure on the middle supporting structure, the method further comprises:
and adjusting the rigidity of the spring damping shock absorption structures in the transition units to ensure that the rigidity of the spring damping shock absorption structures in the same transition unit is the same, and the rigidity of the spring damping shock absorption structures in different transition units is gradually increased along the direction from the road to the bridge.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293688A (en) * | 2021-05-10 | 2021-08-24 | 南京工业大学 | Device suitable for eliminating bump at bridge head and construction method |
| CN113512945A (en) * | 2021-04-20 | 2021-10-19 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting sections |
-
2020
- 2020-06-03 CN CN202010495405.2A patent/CN111576130A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113512945A (en) * | 2021-04-20 | 2021-10-19 | 中交第三公路工程局有限公司 | Variable-rigidity splicing device and method for road bridge and road tunnel connecting sections |
| CN113293688A (en) * | 2021-05-10 | 2021-08-24 | 南京工业大学 | Device suitable for eliminating bump at bridge head and construction method |
| CN113293688B (en) * | 2021-05-10 | 2022-04-15 | 南京工业大学 | Device suitable for eliminating bump at bridge head and construction method |
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