阅读说明：本技术 一种公路长陡下坡避险车道的设置方法 (Method for setting highway long and steep downhill danger avoiding lane ) 是由 潘晓东 于 2019-10-15 设计创作，主要内容包括：本发明属于土木工程技术领域,特别涉及一种公路长陡下坡避险车道的设置方法；其一种公路长陡下坡避险车道的设置方法,利用由第一区段、第二区段和第三区段组成的制动车道逐次降速；所述第一区段为水中陷阻区,所述水中陷阻区采用断面形状为浅碟式弧形的水槽,所述水槽采用浆砌片石或砼结构；所述水槽内铺设厚度为60～80cm,粒径为2～4cm的卵砾石,所述水槽内的水面与所述卵砾石之间的距离为25～35cm。本发明提供一种具有新结构的公路长陡下坡避险车道的设置方法,该公路长陡下坡避险车道的设置方法综合采用多种形式逐次实现降温恢复制动功能,减阻车速,限位阻停；利用三个区段各自不同的方法使减速从弱至强逐步渐进,最终实现安全避险的目的。(The invention belongs to the technical field of civil engineering, and particularly relates to a method for setting a long and steep downhill danger avoiding lane of a road; a method for setting a long and steep downhill danger-avoiding lane of a road comprises the steps of gradually reducing the speed of a braking lane consisting of a first section, a second section and a third section; the first section is an underwater subsidence area, the underwater subsidence area adopts a water tank with a shallow-dish-shaped arc-shaped cross section, and the water tank adopts a mortar rubble or concrete structure; the gravel with the thickness of 60-80 cm and the particle size of 2-4 cm is paved in the water tank, and the distance between the water surface in the water tank and the gravel is 25-35 cm. The invention provides a method for setting a long and steep downhill danger-avoiding lane of a road with a new structure, which comprehensively adopts various forms to gradually realize the functions of cooling, recovering braking, reducing resistance, reducing the vehicle speed and limiting and stopping; the deceleration is gradually reduced from weak to strong by using different methods of the three sections, and finally the purpose of safe risk avoidance is realized.)

1. A method for setting a long and steep downhill danger-avoiding lane of a road is characterized in that a braking lane consisting of a first section (1), a second section (2) and a third section (3) is used for reducing the speed gradually; the first section (1) is an underwater subsidence area, the underwater subsidence area adopts a water tank with a shallow-dish-shaped arc-shaped cross section, and the water tank adopts a mortar-laid rubble or concrete structure; the gravel (4) with the thickness of 60-80 cm and the particle size of 2-4 cm is paved in the water tank, the distance between the water surface in the water tank and the gravel (4) is 25-35 cm, and the slopes of longitudinal slopes at the inlet end and the outlet end of the underwater subsidence area are both 10% +/-5%.

2. The method for setting the highway long and steep downhill danger-avoiding lane according to claim 1, wherein the second section (2) is a rolling resistance area arranged behind the underwater subsidence area, the rolling resistance area adopts a trapezoidal section, the top length is 20-40 m, the top width is 3.5m, the bottom width is 3m, the depth is 80cm, and a longitudinal slope adopts a 3% downhill; and the gravel stones (4) with the thickness of 60-70 cm and the particle size of 2-4 cm are laid in the rolling resistance area, a gradually-changed transition section (5) with the thickness gradually increased is arranged at one end, close to the underwater subsidence area, of the rolling resistance area, and the thickness of the gravel stones (4) at the starting point of the gradually-changed transition section (5) is 10 cm.

3. The method for setting the highway long and steep downgrade danger avoiding lane according to claim 2, wherein two shallow ruts (18) are arranged on the gravel stones (4) in the flume and the gravel stones (4) in the rolling resistance area.

4. The method for setting the highway long and steep downgrade refuge lane according to claim 2, wherein the third section (3) is a sand pile buffer blocking net area behind a rolling resistance area, the sand pile buffer blocking net area is provided with a trapezoidal free-stacking gravel pile (6), the height of the gravel pile (6) is 1.5m, the length of the gravel pile is 3.0-5.0 m, one side of the gravel pile (6) close to the rolling resistance area is provided with a plurality of waste tires (7) which are close to the gravel pile (6) and are arranged in a step shape, one side of the gravel pile (6) far away from the rolling resistance area is provided with a steel wire netting (8), and the steel wire netting (8) is hooked with a ground anchor arranged on the ground through two-way loop cables (9).

5. The method for setting the highway long and steep downgrade refuge lane according to claim 1, wherein a through rescue lane (10) with the width of 3.5m is arranged on one side of the braking lane, one end of the rescue lane (10) is communicated with a main line (11) of a highway, the other end of the rescue lane is connected with the main line (11) of the highway through a guide lane (12), and the guide lane is communicated with the braking lane.

6. The method for setting up a long and steep downgrade refuge lane according to claim 5, wherein a central division strip opening (13) is provided on the main line (11) of the expressway near both the entrance and exit of the refuge lane.

7. The method for setting the highway long and steep downgrade refuge lane according to claim 1, wherein a heat preservation system (14) is arranged in the water trap area; thermal insulation system (14) is including locating insulation box (141) on gravel (4) way bed, locate insulating tube in insulation box (141), locate respectively inlet channel (143) and outlet conduit (144) of insulating tube both ends, locate inlet valve (148) on inlet channel (143) and locating first water pump (145) on outlet conduit (144), insulating tube includes many parallel arrangement's hollow tube (142), adjacent two connect through return bend (147) between hollow tube (142) and form helical structure form pipeline, just hollow tube (142) with all around being equipped with electric heating pipe on the outer wall of return bend, just on the lateral wall of basin and be close to surface of water department and be equipped with temperature sensor (146).

8. The method for setting the highway long and steep downgrade refuge lane according to claim 1, wherein a water replenishing system (15) is arranged in the underwater trapped area; the water replenishing system (15) comprises a liquid level meter (151) arranged on the gravel ovum (4), a water replenishing pipeline (152) and a second water pump (153) arranged on the water replenishing pipeline (152), one end of the water replenishing pipeline (152) is arranged on the gravel ovum (4), and the other end of the water replenishing pipeline passes through the gravel ovum (4) and is connected with a water replenishing tank.

9. The method for setting the highway long and steep downgrade refuge lane according to claim 8, wherein a first drainage system (16) is arranged at the water trap area; the first drainage system (16) comprises a drainage pipeline (161) and a water pump (162) arranged on the drainage pipeline (161).

10. The method for setting the highway long and steep downgrade refuge lane according to claim 1, wherein a second drainage system (17) is provided in the rolling resistance region; second drainage system (17) is including locating the gravel of the rolling resistance district (4) sand basic unit (171) bottom one side of sand basic unit (171) is equipped with escape canal (172), escape canal (172) are through downspout (173) connection rainwater pipe network system, just be equipped with on escape canal (172) with hole (174) of sand basic unit (171) intercommunication.

Technical Field

The invention belongs to the technical field of civil engineering, and particularly relates to a method for setting a long and steep downhill danger avoiding lane of a road.

Background

A mountain road, particularly a mountain expressway, is inevitably subjected to terrain limitation, a continuous long steep downhill section is generated, and after a heavy vehicle is subjected to long-time continuous braking measures, a part of vehicles are subjected to brake hub overheating, so that the brake failure condition is caused. The technical standard of highway engineering (JTGB01-2014) states that an insurance avoiding lane is set on a continuous long steep downhill section in combination with a traffic safety evaluation argument. The purpose of the method is to provide a special deceleration parking lane which can be driven away from a main line and enter in the section road section where the condition can happen so as to ensure the safety of vehicles and personnel.

At present, expressway in China is generally provided with danger-avoiding lanes on long and steep downhill sections, many of the danger-avoiding lanes are additionally arranged on sections with multiple accidents after the expressway is put into use, and the common forms include aggregate sloping bed type, net cable barrier type, gravel pile type and the like. No unified industry standard is established at home so far to issue a specific setting method.

The material collecting sloping bed type danger avoiding lane is the most used and practical form in China at present, and is characterized in that broken gravels with a certain gradation are paved on a lane sloping bed, and vehicles are decelerated and stopped through the rolling resistance and sloping bed resistance of the material collecting sloping bed. However, a large number of examples and tests show that the shape, grading and paving thickness of the aggregate have different influences on different speeds, 36750and heavy vehicle braking has large influence difference, the vehicle is likely to be decelerated too fast to cause serious damage to a vehicle head and a front shaft and injury to a driver, and the vehicle is likely to rush to even out of the terminal point of a danger avoiding lane due to insufficient deceleration or aggregate hardening.

The net cable barrier type is limited by terrain and cannot effectively arrange a speed-reducing lane slope bed, and a net cable intercepting system with certain damping intensity is arranged near the entrance of the danger avoiding lane.

The gravel pile type is to pile loose gravel on the danger avoiding lane, and the vehicle is quickly decelerated and stopped by the resistance of the gravel pile, and the defect that the huge inertia force of the carriage and goods dragged by the rear part is easy to wash the front cab, so that personnel injury is caused.

In summary, the three common methods for setting the danger avoiding lane have two common defects in different degrees due to the fact that the deceleration method of the methods is not consistent with the synchronization principle of the braking tires of the vehicle, and one of the two common defects is that after an out-of-control vehicle drives into the danger avoiding lane and receives excessive resistance on the front portion of the front axle tire and the vehicle head, the carriage and goods are dragged by the rear portion of the vehicle due to the huge inertia impact force of the carriage and the goods, so that the front cab and the vehicle head are easily damaged, and the safety of personnel is endangered; secondly, when the out-of-control vehicle is blocked, self rescue and rescue cannot be carried out, most of vehicles need to wait for rescue and then vacate the danger avoiding lane again, the time for occupying the danger avoiding lane is long, and the potential safety hazard is large.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a novel method for setting a long and steep downhill danger avoiding lane of a road.

The specific technical scheme of the invention is as follows:

the invention provides a long and steep downhill danger-avoiding lane for a road, which utilizes a braking lane consisting of a first section, a second section and a third section to gradually reduce the speed; the first section is an underwater subsidence area, the underwater subsidence area adopts a water tank with a shallow-dish-shaped arc-shaped cross section, and the water tank adopts a mortar rubble or concrete structure; the gravel is laid in the water tank, the thickness of the gravel is 60-80 cm, the particle size of the gravel is 2-4 cm, the distance between the water surface in the water tank and the gravel is 25-35 cm, and the slopes of longitudinal slopes at the inlet end and the outlet end of the underwater subsidence area are 10% +/-5%.

The invention has the following beneficial effects:

the invention provides a method for setting a long and steep downhill danger-avoiding lane of a road with a new structure, which comprehensively adopts various forms to gradually realize the functions of cooling, recovering braking, reducing resistance, reducing the vehicle speed and limiting and stopping; the deceleration is gradually reduced from weak to strong by using different methods of the three sections, and finally the purpose of safe risk avoidance is realized.

Drawings

FIG. 1 is a schematic structural diagram of a long and steep downhill danger avoiding lane of a road in embodiment 1-3;

FIG. 2 is a cross-sectional view of a second section of examples 1-3;

FIG. 3 is a schematic plan view of a long and steep downhill refuge lane of a road according to embodiment 4;

FIG. 4 is a cross-sectional view of a second section of example 4;

FIG. 5 is a sectional view of the first section of example 4;

FIG. 6 is a sectional view of a top view of a long steep downgrade refuge lane of a road according to embodiment 4;

FIG. 7 is a schematic structural view of a long and steep downhill refuge lane of a road according to embodiment 5;

FIG. 8 is a sectional view of the insulation system of example 5;

FIG. 9 is a schematic structural view of a first segment in accordance with embodiment 6;

fig. 10 is a schematic structural view of a second segment in embodiment 7.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.