CN216040462U

CN216040462U - Stepped downhill road structure and multi-layer stepped downhill road structure

Info

Publication number: CN216040462U
Application number: CN202122264728.3U
Authority: CN
Inventors: 项琴; 邓锐; 赵文豪; 吴飞虎; 张鸿杰
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-03-15
Anticipated expiration: 2031-09-17

Abstract

The utility model provides a stepped downhill road structure and a multi-layer stepped downhill road structure. The stepped downhill road structure comprises a front gentle slope section, a rear gentle slope section and a flat slope section, wherein the flat slope section is provided with a monitoring area and a parking area, the monitoring area is provided with a weight measuring instrument which can be used for monitoring whether vehicles coming and going meet the maximum weight limit requirement, and the parking area is used for parking the vehicles; the junction of the flat slope section and the rear gentle slope section is provided with a step-shaped height drop, a lifting mechanism and a bridge structure are arranged between the height drops, the lifting mechanism can transfer vehicles or pedestrians of the flat slope section to the rear gentle slope section, and the bridge structure is located on one side of the lifting mechanism and used for supporting a roadbed of the flat slope section. The beneficial effects of the utility model can include: the potential safety hazard of the long and large descending ramp can be better eliminated, and scientific and reasonable guarantee is provided for driving safety.

Description

Stepped downhill road structure and multi-layer stepped downhill road structure

Technical Field

The present invention relates to the field of highway traffic, and in particular, to a stepped downhill road structure and a multi-layered stepped downhill road structure.

Background

Because the terrain of the mountain area is complex and the ground height difference is large, long and large downhill routes are often adopted for wiring when the route scheme and the longitudinal slope design are carried out on the roads in the mountain area. However, vehicles running on long and steep downhill roads are prone to illegal behaviors such as overspeed and overload of drivers and poor technical conditions of brake systems, and when the vehicles are serious, brake failure is caused, so that serious traffic accidents are caused. It is important to change the line shape characteristics of the mountain road and reduce the frequency of traffic accidents by optimizing the road structure. The traditional design idea is to dispose the height difference by arranging a steep slope or lengthening a line, and is easily restricted by the terrain, engineering technology and economic conditions.

SUMMERY OF THE UTILITY MODEL

The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, how to change the linear characteristics of the long and steep slopes of mountain roads and optimize the road structure to reduce the frequent occurrence of traffic accidents.

In order to achieve the above object, an aspect of the present invention provides a stepped downhill road structure. The structure comprises a front gentle slope section, a rear gentle slope section and a flat slope section between the front gentle slope section and the rear gentle slope section, wherein the flat slope section is provided with a monitoring area and a parking area, the monitoring area is provided with a weight measuring instrument which can be used for monitoring whether the vehicles coming and going meet the maximum weight limit requirement, and the parking area can be used for parking the vehicles; the grade section with back gentle slope section junction is equipped with the height drop that is the echelonment, and grade section elevation is higher than back gentle slope section elevation, be provided with elevating system and bridge construction between the height drop, elevating system can shift the vehicle or the pedestrian of grade section to back gentle slope section, and bridge construction is located elevating system's one side, and the abutment is used for supporting the road bed of grade section.

In an exemplary embodiment of the utility model, the road surface of the flat slope section is provided with a shielding door, and the shielding door is positioned on the vehicle entering side of the lifting mechanism and used for ensuring that vehicles enter the lifting mechanism orderly and safely.

In an exemplary embodiment of the utility model, the front gentle slope section is provided with a prompt sign board capable of prompting a driver to enter the flat slope section.

In an exemplary embodiment of the utility model, the bridge structure comprises a beam body, a bridge deck, crash barriers, a drain pipe and abutments, wherein the beam body is connected with the bridge deck and supports the bridge deck, the crash barriers are positioned at two ends of the bridge deck, the bridge deck is a pavement layer, the drain pipe for draining water is arranged between the bridge deck and the crash barriers, and the abutments are connected with the beam body and can support and block roadbed soil and the support beam body. Further, the beam body is a T-shaped beam, a box beam or a rectangular beam.

In an exemplary embodiment of the present invention, the bridge construction has a deck having a lateral gradient of-1.8 to-2.2%, and a drain pipe for draining water is provided at the lowest portion of the deck.

In an exemplary embodiment of the utility model, the front gentle slope section has a gradient of-2% to-0.5%, and the rear gentle slope section has a gradient of-2% to-0.5%.

In an exemplary embodiment of the present invention, the lifting mechanism uses a counterweight as an auxiliary power source.

In an exemplary embodiment of the present invention, the number of the lifting mechanisms is greater than or equal to 2.

An aspect of the present invention provides a multi-layered stepped downhill road structure having at least two of the above-described stepped downhill road structures.

Compared with the prior art, the beneficial effects of the utility model can include: (1) the traditional mode of overcoming the height difference such as lengthening the extension line or arranging a steep slope is overturned, and a lifting mechanism is introduced to reduce the height difference, so that the generation of long and large downhill accidents is avoided; (2) the existing structure is changed, the design and construction difficulty of the longitudinal slope is reduced, the filling and digging amount is reduced, and the environment is protected.

Drawings

Fig. 1 shows a schematic view of a stepped downhill road structure in an exemplary embodiment of the utility model;

FIG. 2 illustrates a schematic cross-sectional view of a portion of a bridge construction in an exemplary embodiment of the utility model;

FIG. 3 shows a schematic view of the lifting mechanism in series in an exemplary embodiment of the utility model;

fig. 4 shows a longitudinal section comparison of a stepped downhill road structure with an original road in an exemplary embodiment of the utility model.

The labels in the figure are:

1-front gentle slope section, 2-flat slope section, 3-rear gentle slope section, 4-monitoring area, 5-parking area, 6-lifting mechanism, 61-first lifting mechanism, 62-second lifting mechanism, 63-third lifting mechanism, 7-bridge structure, 71-beam body, 72-bridge deck, 73-crash barrier, 74-drainage pipe, 75-pier, 8-shield door, 81-first shield door, 82-second shield door, 9-prompt signboard, 10-ground line, first road cycle 101, second road cycle 102, third road cycle 103, fourth road cycle 104, fifth road cycle 105, sixth road cycle 106, seventh road cycle 107 and eighth road cycle 108.

Detailed Description

Hereinafter, the stepped downhill road structure of the present invention will be described in detail in connection with exemplary embodiments. Herein, the terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," and the like are used for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance or a strict order of magnitude.

FIG. 1 illustrates a schematic view of a stepped downhill road configuration in an exemplary embodiment of the utility model; FIG. 2 shows a schematic cross-sectional view of a portion of a bridge construction in an exemplary embodiment of the utility model; FIG. 3 shows a schematic view of the lifting mechanism in series in an exemplary embodiment of the utility model; fig. 4 shows a longitudinal section comparison of a stepped downhill road structure with an original road in an exemplary embodiment of the utility model.

In one exemplary embodiment of the present invention, as shown in fig. 1, the stepped downhill road structure includes a front gentle slope section 1, a rear gentle slope section 3, and a flat slope section 2 between the front gentle slope section 1 and the rear gentle slope section 3, and an actual road surface before the stepped downhill road structure of the present invention is disposed is shown using a ground line 10 in fig. 1. The flat slope section 2 is provided with a monitoring area 4 and a parking area 5. Monitoring area 4 is provided with the check weighing appearance, and the check weighing appearance can be used for monitoring whether the incoming and outgoing vehicle satisfies the requirement of maximum limit for weight. The parking area 5 can be used for temporary parking of road vehicles, which may wait to ascend or descend in parking sections.

The connection part of the flat slope section and the rear gentle slope section is provided with a step-shaped height drop, the height of the flat slope section is higher than that of the rear gentle slope section, a lifting mechanism 6 is arranged between the height drops to overcome the height difference, and vehicles or pedestrians in the flat slope section are transferred to the rear gentle slope section. The design of the longitudinal section of the highway is realized by adopting the stepped lifting mechanism, so that the height difference can be obviously reduced, the filling and excavating amount is obviously reduced, various safety accidents caused by long and large downhill are avoided, the vehicle running safety and the road safety are guaranteed, and the design has higher practical significance and economic benefit.

In the embodiment, the length of the slope is not limited when the slope of the downhill is slower than-2%, and the slope of the downhill is preferably steeper than-0.5% in order to meet the drainage requirement. Therefore, the gradient of the front gentle slope section may be set to-2% to-0.5%. Further, the slope of the front gentle slope section may be set to-1.8% to-0.7%, for example, the slope of the front gentle slope section may be-1.5% or-1.0%. Further, the gradient of a part of the front slope section can be set to be-2%, and the gradient of the other part of the front slope section can be set to be-0.5%. The length and the gradient of the front gentle slope section can be determined according to the situation of the actual terrain. Meanwhile, the gradient of the rear gentle slope section can be-2% to-0.5%. Further, the slope of the rear gentle slope section may be set to-1.9% to-0.6%, for example, the slope of the rear gentle slope section may be-1.5% or-1.0%. Further, the slope of a part of the backward slope section may be set to-2%, and the slope of the other part of the backward slope section may be set to-0.5%. The length and the gradient of the rear gentle slope section can be determined according to the actual terrain condition.

In this embodiment, the front gentle slope section and the rear gentle slope section may have the same negative value range, that is, the front gentle slope section and the rear gentle slope section in the same stepped downhill road structure are inclined in the same direction (or extend in the same downhill direction). For example, in the same stepped downhill road structure, the front slope section and the rear slope section both incline downward in the left-to-right direction, and the inclination (i.e., the gradient) may both be between-2% and-0.5%.

The height difference height between the flat slope section and the rear gentle slope section can be set according to the actual terrain condition. The setting can be carried out by comprehensively considering the conditions of the lifting mechanism (installation cost, safety and the like), the gradient and the length of the front gentle slope section, the gradient and the length of the rear gentle slope section and the like. The height difference can be determined according to the maximum lifting height of the lifting mechanism, and can also be determined by comprehensively considering the lifting height of the lifting mechanism, the gradient and the length of the front gentle slope section and the gradient and the length of the rear gentle slope section. For example, the height of the height drop may be set to 20 to 50 meters, for example, 23 to 45 meters.

For example, fig. 4 shows a longitudinal section comparison of a stepped downhill road structure with an original road in an exemplary embodiment of the utility model. As shown in FIG. 4, a longitudinal slope section with a gradient of-4.5% and a length of 600m and a gentle slope section with a gradient of-2.5% and a length of 1000 constitute a road cycle of the original road. The original road in this embodiment is composed of eight road cycles, only the first road cycle at the head end and the eighth road cycle at the tail end of the original road are shown in fig. 4, and the middle second, third, fourth, fifth, sixth and seventh road cycles are indicated by dot-dash lines. The stepped downhill road structure of the embodiment reserves the first, second, third, sixth, seventh and eighth road periods of the original road, and modifies the fourth and fifth road periods of the original road. The fourth road period of the original road is transformed into a front gentle slope section, the front 600m slope of the front gentle slope section is-2%, the rear 1000m slope of the front gentle slope section is-0.5%, the fifth road period of the original road is changed into a rear gentle slope section, the front 600m slope of the rear gentle slope section is-0.5%, and the rear 1000m slope of the rear gentle slope section is-2%. The lifting height (or the height of the stepped height difference) of the lifting mechanism is equal to the height difference between the fourth road period and the fifth road period before modification minus the height difference between the fourth road period and the fifth road period after modification. After improvement, the long downhill of the original road is changed into a medium-short downhill, a lifting area and a medium-short downhill, which is beneficial to the safe driving of vehicles.

And simultaneously, still be provided with bridge structures 7 before the height drop for support the road bed of flat slope section, prevent that the collapse from appearing in the flat slope section road bed between the height drop that forms between flat slope section and the back gentle slope section.

Fig. 2 shows a partial cross-sectional view of the bridge construction in this embodiment. As shown in fig. 1 and 2, the bridge structure 7 may include a beam body 71 (a T-beam in fig. 2), a bridge deck 72, a crash barrier 73, a drain pipe 74, and abutments 75. The beam 71 is connected to the deck 72, and the beam 71 may be a T-beam, a box beam, a rectangular beam, or the like, for supporting the deck. The abutments 75 are connected to the beam bodies 71 to support the subgrade soil and support the beam bodies. The crash barriers 73 are located at both ends of the deck 72 for preventing vehicles from running off the deck. The deck 72 is a pavement layer and may have a gradient of-1.8 to-2.2%, for example-2%, from the center to both sides in the transverse direction. For example, fig. 2 shows that the deck has a gradient of-2% from the center of the deck to both sides in the transverse direction to aid in drainage while ensuring stability of the front gentle slope section and the flat slope section to facilitate smooth entry of the vehicle into the lift mechanism. The drain pipe 74 may be located between the deck 72 and the crash barrier 73 at the lowest slope of the deck 72 for draining water.

In this embodiment, the lifting mechanism 6 may be provided as one or more lifting mechanisms. For example, the elevating mechanisms may be provided on the bidirectional lanes, respectively. For roads with large traffic flow, a plurality of lifting mechanisms can be arranged side by side. For roads with great terrain drop, two-section or multi-section lifting mechanisms can be arranged and used in series. For example, fig. 3 shows a schematic diagram of serial use of the lifting mechanisms in the embodiment, where the first lifting mechanism 61, the second lifting mechanism 62 and the third lifting mechanism 63 are used in series, and after a vehicle can sequentially enter the first lifting mechanism 61, the second lifting mechanism 62 and the third lifting mechanism 63, the vehicle is sequentially transported to a rear gentle slope section by the lifting mechanisms.

Of course, providing multiple lifting mechanisms may be more flexible to use, but may increase the cost of the arrangement to some extent. In the actual operation process, the lifting mechanism can be arranged according to the actual terrain height difference. The lifting mechanism may also have a layered design, for example the lifting mechanism may have three transport layers, with the vehicles entering the lifting mechanism in layers and being transported to the rear gentle slope section in turn.

The lifting mechanism may include a lifting device capable of lifting the vehicle in a vertical direction, for example, a vehicle vertical lift. The internal height of the lifting mechanism may be determined based on the size of the vehicle. For example, it may be a maximum height of the truck plus a certain clearance. The internal space area can be drawn up according to the actual traffic flow. In addition, the lifting mechanism can also use the balance weight as an auxiliary power source, so that the power of the motor can be effectively reduced, the service life of the steel wire rope is prolonged, the reliability of the device is improved, the load quality can be relatively reduced in the load lifting process, and the lifting speed is improved. In the present embodiment, the elevating speed of the elevating mechanism may be 0.4m/s to 0.8m/s, for example, 0.6 m/s.

In the present embodiment, to further increase the vehicle transportation safety, the shielding doors 8, such as the first shielding door 81 disposed on the flat-slope road surface and the second shielding door 82 disposed on the rear gentle-slope road surface, may be disposed on the vehicle entrance side of the lifting mechanism. After part of vehicles enter the lifting mechanism 6 and reach the carrying capacity of the lifter or when the lifting mechanism is running, the shielding door 8 can be closed, and the vehicles can enter the lifting mechanism orderly and safely. The height of the shielding door 8 can be adjusted according to the height of a running vehicle, for example, the height of the shielding door 8 can be set to be 2-3 meters.

In this embodiment, in order to further avoid the traffic hidden trouble caused by the long and large downhill and reduce the occurrence rate of traffic accidents, a prompt sign board 9 may be provided in the front gentle slope section to prompt the driver to enter the flat slope section and pay attention to deceleration.

In this embodiment, the operation process of the stepped downhill road structure may be:

when the vehicle enters a front gentle slope section, the prompting sign board prompts a driver to enter a flat slope section and pay attention to deceleration;

the vehicle enters a flat slope section monitoring area, and the weight measuring instrument judges whether the vehicle meets the maximum weight limit requirement;

a vehicle meeting the maximum weight limit requirement enters a flat slope section parking area to wait for the opening of the first shielding door 81;

opening the first shielding door 81, and enabling the vehicle to enter a lifting mechanism to wait for transportation;

the first screen door 81 is closed and the lifting mechanism moves the vehicle to the rear gentle slope section.

Exemplary embodiment 2

In a second exemplary embodiment of the present invention, the multi-layer stepped downhill road structure has at least two stepped downhill road structures described in exemplary embodiment 1, in addition to exemplary embodiment 1. For example, on the basis of the exemplary embodiment 1, the second and third road periods and the fifth and sixth road periods of the original road are set as the stepped downhill road structure, so that the long downhill of the original road is changed into the short downhill, the lifting area, the short downhill, the lifting area and the medium and short downhill, which is beneficial to the safe driving of the vehicle.

In summary, the beneficial effects of the utility model can include:

(1) the method is suitable for complex terrains in mountainous areas;

(2) an effective and scientific step type lifting mechanism is arranged to overcome the height difference, the traditional mode of overcoming the height difference such as lengthening the extension line or arranging a steep slope is overturned, the potential safety hazard of a long and large descending ramp can be better eliminated, and the scientific and reasonable guarantee is provided for the driving safety;

(3) the existing process is changed, the design and construction difficulty of the longitudinal slope is reduced, the filling and digging amount is reduced, and the environment is protected.

Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.

Claims

1. A stepped downhill road structure is characterized by comprising a front gentle slope section, a rear gentle slope section and a flat slope section between the front gentle slope section and the rear gentle slope section,

the flat slope section is provided with a monitoring area and a parking area, the monitoring area is provided with a weight measuring instrument which can be used for monitoring whether the coming and going vehicles meet the maximum weight limit requirement, and the parking area can be used for parking the vehicles;

the grade section with back gentle slope section junction is equipped with the height drop that is the echelonment, and grade section elevation is higher than back gentle slope section elevation, be provided with elevating system and bridge construction between the height drop, elevating system can shift the vehicle or the pedestrian of grade section to back gentle slope section, and bridge construction is located elevating system's one side for support the road bed of grade section.

2. The stepped downhill road structure of claim 1, wherein a road surface of the flat slope section is provided with a screen door located at a vehicle entrance side of the lifting mechanism for ensuring orderly and safe vehicle entrance into the lifting mechanism.

3. The stepped downhill road structure of claim 1, wherein the front gentle slope section is provided with a warning sign capable of warning a driver of an imminent approach to the flat slope section.

4. The stepped downhill road structure according to claim 1, wherein the bridge structure includes a beam body connected to and supporting the bridge deck, a bridge deck, crash barriers at both ends of the bridge deck, a drain pipe provided between the bridge deck and the crash barriers, and abutments for supporting a roadbed soil mass and the supporting beam body.

5. The stepped downhill road structure of claim 4, wherein the beam body is a T-beam, a box beam, or a rectangular beam.

6. The stepped downhill road structure of claim 1, wherein the bridge structure has a deck having a lateral gradient of-1.8 to-2.2%, and a drain pipe for draining water is provided at a lowest portion of the deck.

7. The stepped downhill road structure according to claim 1, wherein the slope of the front gentle slope section is-2% to-0.5%, and the slope of the rear gentle slope section is-2% to-0.5%.

8. The stepped downhill road structure of claim 1, wherein the lift mechanism uses a counterweight as an auxiliary power source.

9. Stepped downhill construction according to claim 1, wherein the number of hoisting mechanisms is greater than or equal to 2.

10. A multi-level stepped downhill road structure, characterized by having at least two stepped downhill road structures as claimed in any one of claims 1 to 9.