CN110130219A - An Adaptive Transition Section Device for Solving Vehicle Jumping at Bridge Head - Google Patents

Abstract

The invention discloses a kind of adaptive transition section apparatus for solving bumping at bridge-head, comprising: transition hole, recess are arranged between roadbed and end of the bridge；Substrate is set to the bottom in the transition hole, and transition panel, both ends overlap respectively with roadbed and end of the bridge and the upper surface of lap-joint is concordant；And elevation and subsidence regulating device, energy axial stretching, described elevation and subsidence regulating device one end is fixed on the substrate, and the other end extends straight up and is fixed on the transition panel；The quadrangle that the elevation and subsidence regulating device at least corresponds to the transition panel is respectively arranged one.Using the adaptive transition section apparatus of above-mentioned solution bumping at bridge-head, it is ensured that end of the bridge and roadbed drop-over, solving problem of vehicle bump at bridge head.

Description

An Adaptive Transition Section Device for Solving Vehicle Jumping at Bridge Head

technical field

The invention relates to the technical field of solving the problem of vehicle jumping at the bridge head, in particular to an adaptive transition section device for solving the problem of vehicle jumping at the bridge head.

Background technique

Affected by factors such as treatment measures and structure stiffness, the settlement of the pile foundation at the bridge head is usually very different from the settlement of the subgrade section at the bridge head. Especially in soft soil areas, the difference is obvious. The bridge pile foundations in soft soil areas are all driven into better bearing layers, while the measures taken for the surrounding subgrades are relatively weak, and generally only part of them are treated depending on the situation. In addition, due to the limitations of the previous survey methods and understanding, after the project is completed and put into operation, the previous design may not achieve the expected results, resulting in a large post-construction settlement, resulting in differential settlement between the bridgehead and the roadbed, resulting in bridgehead jumping, serious It will endanger the safety of drivers and passengers.

Contents of the invention

In view of the above problems, the present invention proposes an adaptive transition section device for solving the problem of vehicle jumping at the bridge head, so as to ensure the smooth connection between the bridge head and the roadbed and solve the problem of vehicle jumping at the bridge head.

For reaching above-mentioned technical effect, the technical scheme that the present invention adopts is:

An adaptive transition section device for solving bridge head jumping, comprising:

Transition pit, the depression is set between the subgrade and the bridge head;

a substrate disposed at the bottom of the transition pit,

a transitional panel, the two ends of which overlap the subgrade and the bridge head respectively, and the upper surfaces of the overlaps are flush; and

The lifting adjustment device can be stretched axially, one end of the lifting adjustment device is fixed on the base plate, and the other end extends vertically upwards and is fixed on the transition panel; the lifting adjustment device corresponds to at least the four corners of the transition panel Set one each.

Further, the lifting adjustment device includes: a drive box, a telescopic mechanism, an inclinometer, a controller and a power supply box; the drive box is fixed on the lower surface of the transition panel, includes a drive housing and is arranged in the drive housing The transmission box and the drive motor, the input shaft of the transmission box is connected with the main shaft of the drive motor, the output shaft of the transmission box is arranged vertically downward and protrudes from the drive housing; the telescopic mechanism includes at least two layers from the inside The threaded sleeves that are screwed to the outside in turn, the threaded sleeves are arranged vertically, and the bottom end of the outermost threaded sleeve is fixedly connected to the base plate, and the top end of the innermost layer of the threaded sleeve is connected to the base plate. The output shaft of the transmission box is connected to the coaxial drive; the inclinometer is arranged on the side of the transition panel to obtain the slope value signal of the transition panel; the controller is installed in the drive housing, and the controller Electrically connected with the inclinometer and the drive motor respectively, the controller obtains the slope value signal and uses it as a control variable to control the drive motor to start working until the slope value measured by the inclinometer is within the set range The power supply box is arranged on the side of the transition panel, and the power supply box is electrically connected with the inclinometer, the drive motor and the controller respectively to provide power.

Further, the lifting adjustment device further includes: an axial bearing, the axial bearing is movably sleeved on the output of the transmission box between the top end of the innermost threaded sleeve and the lower end surface of the drive housing. shaft, and the diameter of the innermost threaded sleeve is larger than that of the output shaft.

Further, the lifting adjustment device also includes: an upper support plate, which is movably sleeved on the output shaft of the transmission box, the lower surface of the upper support plate is fixedly connected with the upper end of the axial bearing, and the upper support plate is fixedly connected to the upper end of the axial bearing. The upper surface of the support plate abuts against the lower end surface of the drive housing.

Further, the lower end surface of the drive housing is provided with a cavity for accommodating the upper support plate.

Further, a flexible pad is provided between the upper support plate and the bottom surface of the concave cavity.

Further, the bottom end of the outermost threaded sleeve is fixedly connected to the upper surface of the substrate through a fixing seat.

Further, the threaded sleeve of the telescoping mechanism has three layers.

Further, the transition panel and the bridge head are connected through the bridge deck cap, and the two opposite sides of the bridge deck cap are respectively recessed with overlapping joints, and the transition panel and the bridge head are respectively overlapped on the overlapping joints on one side , so that the upper surfaces of the transitional panels, bridgeheads and deck caps are flush.

Further, an anti-sway hinge is provided on the outside of the joint between the transition panel and the bridge deck platform, and the two ends of the anti-sway hinge are respectively hinged and fixed to the sides of the transition panel and the bridge deck platform.

Compared with the prior art, the present invention has the following beneficial effects:

1. The transition is carried out by building a transition section between the roadbed and the bridge head. The transition section connects the roadbed and the bridge head with a transition panel. The transition panel is supported by the lifting adjustment device with the base plate as the lower foundation. The lifting adjustment function of the lifting adjustment device can be adjusted at any time The posture of the transition panel ensures that the transition panel is connected to the subgrade and the bridgehead, avoids differential settlement, eliminates the factors that cause the bridgehead to jump, and thus solves the problem of bridgehead jumping;

2. It can be applied to prevent differential settlement pretreatment when building new bridgeheads, and can also be used to treat bridgehead subgrades of operating roads, with strong practicability.

Description of drawings

Fig. 1 is a schematic diagram of a planar structure of an on-site use state according to an embodiment of the present invention;

Fig. 2 is the sectional structure schematic diagram of A-A section in Fig. 1;

Fig. 3 is the sectional structure schematic diagram of B-B section in Fig. 1;

Fig. 4 is a schematic structural diagram of a transition section of an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a lifting adjustment device according to an embodiment of the present invention;

Fig. 6 is the connection schematic diagram of each charging element of the embodiment of the present invention;

Fig. 7 is a logic schematic diagram of the automatic control of lifting according to the embodiment of the present invention;

Reference signs: 1-transition section device, 11-transition pit, 12-base plate, 13-transition panel, 14-lift adjustment device, 141-drive box, 1411-drive housing, 1412-transmission box, 14121-input shaft , 14122-output shaft, 1413-drive motor, 1414-cavity, 142-telescopic mechanism, 1421-threaded sleeve, 143-inclinometer, 144-controller, 145-power supply box, 146-axial bearing, 147 - upper support plate, 148 - flexible pad, 149 - fixed seat, 15 - anti-traverse hinge, 16 - pavement layer, 2 - subgrade, 3 - deck cap, 4 - bridge head.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right" etc. is based on the drawings The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the components or structures referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the scope of the present invention. limit.

As shown in Figures 1 to 5, the self-adaptive transition section device 1 provided in this embodiment to solve the problem of vehicle jumping at the bridgehead is built between the roadbed 2 and the bridgehead 4 to make a transition between the bridgehead 4 and the bridgehead 2, so that the settlement of the bridgehead 4 and the roadbed 2 can maintain a good settlement and continuous movement. , to avoid differential settlement, ensure that the subgrade 2 and the bridge head 4 are connected smoothly, and eliminate the factors that cause the bridge head 4 to jump, thereby solving the problem of the bridge head 4 jumping.

As shown in FIG. 2 , the transition section device 1 is mainly composed of a transition pit 11 , a base plate 12 , a transition panel 13 and a lifting adjustment device 14 . The transition pit 11 is recessed between the subgrade 2 and the bridge head 4 , and the bottom of the transition pit 11 is constructed with a rigid reinforced concrete base plate 12 as a supporting foundation for the transition section device 1 . The transition panel 13 can also adopt a rigid reinforced concrete slab structure, and its two ends are respectively overlapped with the subgrade 2 and the bridge head 4, and the upper surfaces of the overlapped joints are flush to form a smooth transition of the road surface.

The transition panel 13 and one end of the subgrade 2 can be overlapped by using a common lapping structure in road engineering, that is, the end of the transition panel 13 is set in a flat-headed or stepped shape, and the end of the subgrade 2 is provided with a structurally matched lap. Just connect the end of the transition panel 13 to the lap. The overlapping of the other end of the transition panel 13 and the bridgehead 4 can be carried out through the bridge deck cap 3. Specifically, the two opposite sides of the bridge deck cap 3 are respectively concavely provided with overlapping joints, and the transition panel 13 and the bridgehead 4 are overlapped respectively. It is connected to the overlapping joint on one side, so that the upper surfaces of the transition panel 13, the bridge head 4 and the deck cap 3 are flush. In order to prevent the transition panel 13 from moving laterally with the bridge head 4, an anti-traversal hinge 15 can also be provided on the outside of the butt joint between the transition panel 13 and the deck cap 3, and the two ends of the anti-traversal hinge 15 are respectively hinged and fixed on the transition panel. 13 and the side of the deck cap 3, so as to limit the lateral dislocation between the transition panel 13 and the deck cap 3, and retain a certain longitudinal dislocation capability between the transition panel 13 and the bridge deck 3, so that the transition panel 13 Lifting adjustment to ensure the smooth transition of the bridge deck. And in the actual road construction process, the top of subgrade 2, transition panel 13, bridge deck cap 3 and bridgehead 4 all can be paved with pavement pavement layer 16, to improve road surface driving environment, and in the present embodiment, in transition panel The road pavement layer 16 laid on the upper surface of 13 should be made of lightweight materials to reduce the gravity applied by the transition panel 13 to the substructure.

The transition panel 13 is supported by the base plate 12 through the lifting adjustment device 14. The lifting adjustment device 14 can be stretched axially. One end of the lifting adjustment device 14 is fixed on the base plate 12, and the other end extends vertically upward and is fixed on the transition panel 13 It is respectively provided with one at least four jiaos of corresponding transition panel 13, and concrete configuration quantity should be matched with the specific specification of transition panel 13, and the length of transition panel 13 is longer, and the quantity of configuration just should increase correspondingly, to guarantee that transition panel can 13 for effective support and adjustment, so that the posture of the transition panel 13 can be adjusted at any time through the lift adjustment function of the lift adjustment device 14, ensuring that the transition panel 13 is connected with the subgrade 2 and the bridge head 4.

As shown in FIG. 4 , the lifting adjustment device 14 includes: a driving box 141 , a telescoping mechanism 142 , an inclinometer 143 , a controller 144 and a power supply box 145 . The drive box 141 is fixed on the lower surface of the transition panel 13, including a drive housing 1411, a transmission box 1412 and a drive motor 1413 arranged in the drive housing 1411, the input shaft 14121 of the transmission box 1412 is connected with the main shaft of the drive motor 1413, and the transmission The output shaft 14122 of the box 1412 is arranged vertically downward and protrudes from the drive housing 1411 . The telescoping mechanism 142 includes at least two layers of threaded sleeves 1421 that are threaded sequentially from the inside to the outside. The specific number of layers of the threaded sleeves 1421 should be selected according to the preset settlement range to be adjusted. The larger the preset settlement range, the naturally It is necessary to select more layers of telescopic mechanisms 142 to ensure sufficient telescopic adjustment and support strength. The threaded sleeve 1421 is vertically arranged, and the bottom end of the outermost threaded sleeve 1421 is fixedly connected to the base plate 12, and the top end of the innermost threaded sleeve 1421 is coaxially connected to the output shaft 14122 of the transmission box 1412; thus When the driving motor 1413 starts to work, the threaded sleeves 1421 of each layer (at least two of them) of the telescoping mechanism 142 are driven to rotate relative to each other, thereby realizing telescoping.

The telescopic drive of the telescopic mechanism 142 by the drive motor 1413 is automatically realized according to the differential settlement at the bridge head, and the specific method is that the inclinometer 143 is arranged on the side of the transition panel 13 to obtain the slope value signal of the transition panel 13; The inclinometer 143 in the embodiment can be the TDCX-801 series inclinometer produced by Jintan Tiandi Sensor Co., Ltd., which is widely used in the settlement observation of dams, slopes, and structural foundations, and has reliable functions. Simultaneously, the controller 144 is installed in the drive housing 1411, as shown in Figure 6, the controller 144 is electrically connected with the inclinometer 143 and the drive motor 1413 respectively, certainly, the inclinometer 143, the drive motor 1413 and the controller The power supply of 144 is provided by a power supply box 145, and the power supply box 145 is respectively electrically connected with the inclinometer 143, the drive motor 1413 and the controller 144 to provide power. In this embodiment, the power supply box 145 is arranged on the side of the transition panel 13 to facilitate maintenance and battery replacement.

As shown in Figure 7, the controller 144 obtains the slope value signal measured by the inclinometer 143 in real time. When within the threshold range, the controller 144 will not start the drive motor 1413, and once the slope value changes beyond the threshold range, the controller 144 will use the slope value signal as a control variable to control the drive motor 1413 to start work until The inclination value measured by the inclinometer 143 returns to the set range again. Of course, if multiple lift adjustment devices 14 are used at the same time, one of their controllers 144 can be used for unified synchronous control, and the activation and response of the adjustments are more accurate and reliable.

As shown in Figure 5, the threaded casing 1421 of the telescopic mechanism 142 in this embodiment is preferably provided with three layers of inner, middle and outer layers, so that the telescopic mechanism 142 has three times the amount of telescopic adjustment, fully adapting to the use environment of conventional bridgehead adjustment; At the same time, the thread of the threaded sleeve 1421 is preferably a trapezoidal thread, which has a higher structural strength and can more reliably withstand the pressure exerted on the telescopic mechanism 142 in the axial direction. The bottom end of the outermost threaded sleeve 1421 is fixedly connected to the upper surface of the base plate 12 through a fixing seat 149 to ensure a solid, stable and reliable fixing foundation.

At the same time, because the innermost threaded sleeve 1421 will move relative to the drive housing 1411 of the drive box 141 during rotation, in order to ensure the smooth rotation of the threaded sleeve 1421, the lifting adjustment device 14 is not provided in this embodiment. Specifically, the axial bearing 146 is movably sleeved on the output shaft 14122 between the top end of the innermost threaded sleeve 1421 and the lower end surface of the drive housing 1411, and the innermost threaded sleeve 1421 The diameter of the shaft is larger than that of the output shaft 14122, so that the upper and lower ends of the axial bearing 146 respectively abut against the two relatively rotating structures, ensuring smooth rotation, and can withstand the pressure from the axial direction, improving the threaded casing 1421 working life.

In the case of further optimizing the above structure, an upper support plate 147 can be added to the lifting adjustment device 14. The upper support plate 147 is movably sleeved on the output shaft 14122 of the transmission box 1412. The lower surface of the upper support plate 147 is aligned with the axial direction. The upper end of the bearing 146 is fixedly connected, and the upper surface of the upper support plate 147 abuts against the lower end surface of the drive housing 1411 to increase the contact area, thereby improving the abutting connection between the threaded sleeve 1421, the axial bearing 146 and the transmission box 1412. stability. In addition, a concave cavity 1414 for accommodating the upper supporting plate 147 can be provided on the lower end surface of the driving housing 1411, and the upper supporting plate 147 is fitted in the concave cavity 1414 to make the connection more stable and prevent the upper supporting plate 147 from The axial bearing 146 rotates. Of course, a flexible pad 148 can also be provided between the upper support plate 147 and the bottom surface of the concave cavity 1414 to realize the flexible contact on the pressure-bearing direction, and can play a certain shock-absorbing effect, reducing the impact of the telescopic mechanism 142 during use. Vibration damage to the thread, and avoid the automatic loosening and shortening of the threaded connection under the action of vibration, so that the transition panel 13 can be stably supported and docked for a longer period of time.

The self-adaptive transition section device 1 for solving bridge head jumping can be installed at the new bridge head, and a transition pit 11 is dug on the foundation outside the bridge head 4, or other forms of transition pits 11 are built by using the terrain environment, and then the transition pit 11 is constructed. Completing the installation of other structures within the bridge deck can avoid the phenomenon of bridge head jumping due to differential settlement in the future operation process, and prevent the phenomenon that differential settlement in the later operation process cannot be adjusted. Of course, even if the highway is in operation, the structure can also be laid out, and the base plate 12 and the transition panel 13 are installed to the corresponding positions outside the bridge head 4 by pushing or excavating, and then drilled or static pressure. The lifting adjustment device can be placed in the corresponding position between the base plate 12 and the transition panel 13 . It can be applied to the pretreatment of the bridge head to prevent differential settlement when building a new bridge, and it can also be used to treat the bridge head subgrade of the operating road, effectively solving the problem of bridge head jumping, and has strong practicability.

It should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. It should be included within the scope of the claims and description of the present invention.

Claims (10)

1. A kind of self-adaptive transition section device that solves bridge head jumping, is characterized in that, comprises: Transition pit, the depression is set between the subgrade and the bridge head; a substrate disposed at the bottom of the transition pit, a transitional panel, the two ends of which overlap the subgrade and the bridge head respectively, and the upper surfaces of the overlaps are flush; and The lifting adjustment device can be stretched axially, one end of the lifting adjustment device is fixed on the base plate, and the other end extends vertically upwards and is fixed on the transition panel; the lifting adjustment device corresponds to at least the four corners of the transition panel Set one each. 2. The self-adaptive transition section device for solving bridge head jumping according to claim 1, characterized in that, the lifting adjustment device comprises: a drive box, a telescopic mechanism, an inclinometer, a controller and a power supply box; The drive box is fixed on the lower surface of the transition panel, including a drive housing, a transmission box and a drive motor arranged in the drive housing, the input shaft of the transmission box is connected to the main shaft of the drive motor, and the output shaft of the transmission box set vertically downward and protrude from the drive housing; The telescoping mechanism includes at least two layers of threaded sleeves that are threaded sequentially from the inside to the outside, the threaded sleeves are arranged vertically, and the bottom end of the outermost threaded sleeve is fixedly connected to the base plate, and the innermost The top end of the threaded sleeve of the first layer is coaxially connected with the output shaft of the transmission box; The inclinometer is arranged on the side of the transition panel to obtain the slope value signal of the transition panel; The controller is installed in the drive housing, the controller is electrically connected to the inclinometer and the drive motor respectively, the controller acquires the slope value signal and uses it as a control variable to control the drive motor to start Work until the slope value measured by the inclinometer is within the set range; The power supply box is arranged on the side of the transition panel, and the power supply box is respectively electrically connected with the inclinometer, the drive motor and the controller to provide power. 3. The self-adaptive transition section device for solving bridge head jumping according to claim 2, characterized in that, the lifting adjustment device further comprises: an axial bearing, and the axial bearing is movably sleeved on the innermost On the output shaft of the transmission box between the top end of the threaded sleeve and the lower end surface of the drive housing, and the diameter of the innermost threaded sleeve is larger than that of the output shaft. 4. The self-adaptive transition section device for solving bridge head jumping according to claim 3, characterized in that, the lifting adjustment device further comprises: an upper support plate, which is movably sleeved on the transmission box On the output shaft, the lower surface of the upper support plate is fixedly connected to the upper end of the axial bearing, and the upper surface of the upper support plate abuts against the lower end surface of the drive housing. 5 . The adaptive transition section device for solving bridge head jumping according to claim 4 , characterized in that, the lower end surface of the drive housing is provided with a cavity for accommodating the upper support plate. 6 . 6. The self-adaptive transition section device for solving bridge head jumping according to claim 5, characterized in that a flexible pad is arranged between the upper support plate and the bottom surface of the concave cavity. 7. The self-adaptive transition section device for solving bridge head jumping according to claim 2, characterized in that, the bottom end of the outermost threaded sleeve is fixedly connected to the upper surface of the base plate through a fixing seat. 8. The self-adaptive transition section device for solving bridge head jumping according to claim 2, characterized in that, the threaded casing of the telescoping mechanism is provided with three layers. 9. The self-adaptive transition section device for solving bridge head jumping according to claim 1, characterized in that, the transition panel and the bridge head are connected through a bridge deck cap, and the two opposite sides of the bridge deck cap are respectively concave. An overlapping joint is provided, and the transition panel and the bridge head are respectively overlapped on the overlapping joints on one side, so that the upper surfaces of the transition panel, the bridge end and the deck cap are flush. 10. The self-adaptive transition section device for solving bridge head jumping according to claim 9, characterized in that, an anti-sway hinge is arranged on the outside of the butt joint between the transition panel and the deck cap, and the anti-sway hinge The two ends of the bridge are respectively hinged and fixed on the sides of the transition panel and the deck cap.