Transition device for preventing vehicle bump at bridge head
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a transition device for preventing vehicle bump at a bridge head.
Background
The road and bridge transition section is a toxic lump which limits the overall rapid development of road traffic, and the bumping at the bridge head becomes a worldwide difficult problem. The main factors causing the bump at the bridge head are as follows: uneven settlement, rigidity mutation, vehicle speed, vibration resistance of the vehicle and the like. In terms of urban road conditions, the uneven settlement is generated at the joint between the flexible road and the rigid structure due to different rigidity, and the dislocation is generated. The bridge and the roadbed pavement are different in material composition, rigidity, strength, expansion and contraction and the like, concentrated stress is easily formed at the bridge head joint when the bridge is stressed, the bridge and the road are settled simultaneously under the action of vehicle load, structural dead weight and natural factors, but the settlement amount of the bridge and the road is greatly different, and the settlement amount of the road is far greater than that of the bridge to form a wrong platform, so that bridge head bumping is caused during driving.
At present, the method for solving the problem of bump at the bridge head mainly comprises the steps of arranging a bridge head butt strap, a geogrid and the like, and some methods obtain better effects and some methods are not satisfactory. If the bridge head butt strap is arranged, the bridge head butt strap can be broken along with the settlement of the embankment, and further the height transition and the bearing capacity which are required are lost.
The bump at the bridge head not only directly affects the traffic capacity of roads, but also affects the comfort and the safety of driving, and the bump at the bridge head can also damage transported objects, so that the bump at the bridge head is discussed, the bump at the bridge head is comprehensively analyzed, reasonable and effective prevention measures and maintenance schemes are provided, and great economic benefits and social benefits are achieved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a transition device for preventing the vehicle bump at the bridge head. The device can effectively solve the problem of bumping at the bridge head caused by uneven settlement of the rigid abutment and the roadbed.
The specific technical scheme of the invention is as follows:
the invention innovatively designs a transition device for preventing bump at the bridge head, which comprises an abutment, a roadbed, a first consolidation plate, a second consolidation plate, a first butt strap, a second butt strap, a steel column and channel steel;
the first consolidation plate is fixedly connected with the abutment end, the first consolidation plate is hinged with the second consolidation plate through the steel column, the second consolidation plate is fixedly connected with the roadbed section, and the second consolidation plate is hinged with the second butt strap through the steel column and can freely rotate along with the hinge;
slotted holes are reserved on the first butt strap and the second butt strap, and the first butt strap is connected with the second butt strap through the channel steel;
the first butt strap and the second butt strap can freely stretch out and draw back;
the thickness of the channel steel is slightly smaller than the height of the slotted hole, so that the channel steel can better slide in the slotted hole;
the first consolidation plate and the second consolidation plate are consolidated with the abutment end and the roadbed section in an embedded mode, and the size of each component is calculated according to the borne limit load.
Has the advantages that:
when there is no settlement difference, the angle between the consolidation board and the butt strap is 180 degrees, when the settlement of one side of the roadbed is larger, the butt strap and the consolidation board rotate, the butt strap and the butt strap extend for a certain length, so that a transition section is arranged between the roadbed section and the bridge abutment.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of a transition device for preventing bump at the bridge head in an embodiment of the invention;
FIG. 2 is a top view of a transition device for preventing bump at the bridge head in an embodiment of the present invention;
fig. 3 is a schematic channel steel diagram of a transition device for preventing vehicle bump at bridge head in the embodiment of the invention.
In the figure, 1 is a first consolidation plate, 2 is a first butt strap, 3 is a second butt strap, 4 is a second consolidation plate, 5 is a channel steel, 6 is a steel column, and 7 is a slot hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further 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.
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, the transition device for preventing bump at bridge head according to the present invention includes an abutment, a roadbed, a first fixed plate 1, a second fixed plate 4, a first butt strap 2, a second butt strap 3, a channel steel 5, and a steel column 6;
first consolidation board 1 and second consolidation board 4 concreties respectively with abutment and road bed end, first consolidation board 1 with first access board 2 passes through steel column 6 is articulated, second consolidation board 4 with second access board 3 passes through steel column 6 is articulated, and all can follow the hinge free rotation, first access board 2 with second access board 3 all leaves slotted hole 7, first access board 2 with second access board 3 passes through channel-section steel 5 is connected, and first access board 2 with second access board 3 can freely stretch out and draw back. The thickness of the channel steel 5 is slightly smaller than the height of the slotted hole 7, so that the channel steel 5 can better slide in the slotted hole 7. The first consolidation plate 1 and the second consolidation plate 4 can be fixedly connected with the abutment end and the roadbed end in a pre-buried mode, and the size of each component is calculated according to the borne limit load.
Please continue to refer to fig. 2 and fig. 3, first, the first consolidation plate 1 and the second consolidation plate 4 are pre-embedded at the abutment end and the roadbed end, then the first butt strap 2 is aligned with the prefabricated hole of the first consolidation plate 1, the steel column 6 is inserted into the hole to form the hinge joint, the second butt strap 3 is aligned with the hole of the second consolidation plate 4, the steel column 6 is inserted to form the hinge joint, finally, the slotted holes 7 of the first butt strap 2 and the second butt strap 3 are aligned, the channel steel 5 is inserted and the channel steel 5 can only move along the connection direction of the first butt strap 2 and the second butt strap 3.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.