CN111676747A

CN111676747A - Innovative design scheme for safe and efficient high-speed overpass without traffic lights or traffic accidents at urban crossroads

Info

Publication number: CN111676747A
Application number: CN201911153594.9A
Authority: CN
Inventors: 侯忠胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-09-18

Abstract

The overpass is designed with four layers: the four lanes in the north-south direction are the first layer. And the east-west bidirectional four lanes are the second layer of the overpass. The third layer is a pedestrian turning layer. The fourth layer is a vehicle steering layer. The south and north directions of the first layer are respectively used for building an inclined plane overpass of the upper and lower roads and an inclined plane overpass of the sidewalk from the east to the west to the third layer. The third layer is designed to solve the problem that the pedestrian needs to turn to pass the road, and the pedestrian can go to the third layer turning layer or turn to or pass the road by riding an elevator. All vehicles needing to be steered turn anticlockwise from the vehicle turning road inclined plane overpass to the fourth layer. The total design height is 15 m; the first floor to the second floor are six meters high. The net height is five meters and four meters. Six meters from the second layer to the third layer. The net height is five meters and four meters. The third to fourth layers are three meters high and two meters high. The design plane diameter of the three pedestrian turning layers is 40-50 m. The plane diameter of the turning layer of the fourth layer of the vehicle is designed to be 80 meters to 100 meters. And four elevators are arranged at four corners to facilitate up-and-down turning and passing of people.

Description

Innovative design scheme for safe and efficient high-speed overpass without traffic lights or traffic accidents at urban crossroads

The technical field is as follows:

the construction field of buildings, the key point is the construction of overpasses. The overpass is designed and constructed according to the national standard.

Second, background Art

At present, the urban crossroads are three lanes or four lanes. The novel traffic-light-free traffic-accident-free high-efficiency high-speed overpass can be used. The first vehicle and people's trip are not bothered by roads and traffic lights. The traveling speed and urban transportation running speed of people are improved. The problem of traffic jam and people blockage of the road is thoroughly solved. Secondly, urban residents are not worried about traveling. And enjoys higher-level urban life. Cities entered a new period, new stage of high civilization. Thirdly, the existing overpass technology and infrastructure technology of China are integrated in the design and construction of the overpass. Depends on the current Chinese capital construction technology, scientific construction technology and overpass construction technology. The flyover is designed, constructed and established by combining various technologies which are rapidly developed in China and improving the construction technology of capital construction and bridges, is completely possible to implement and construct, and can be safely used for a long time.

Third, the invention

The problem of traffic jam of vehicles and people is fundamentally solved. The red crossroad is specially researched and designed to be safe, efficient and high-speed without traffic lights and traffic accidents. The overpass is arranged, and the separation of straight running and steering of vehicles is realized. The separation of the straight running and the steering of the pedestrian. The overpass is provided with four layers. The first layer is four lanes in the north-south direction. The second layer is an east-west two-way four-lane overpass. The third layer is a pedestrian turning layer overpass and a pedestrian turning layer. The fourth layer is a vehicle steering overpass and a vehicle steering special layer. The location is a city intersection. No crossroads were found. The four-layer overpass is improved. The purpose of safe, efficient, high-speed and comfortable trip without traffic lights or traffic accidents can be achieved. The road terrorism, the blocking terrorism and the accident are absent when people go out. Incomplete statistics. Traffic jam in the world is 1 hundred million and 3000 ten thousand minutes each day. 40 hundred million people travel each day. Every person blocks up on the road for half an hour, and is in the world. 20 hundred million hours.

Fourth, description of drawings:

plan view fig. 1 illustrates:

the urban crossroads are: 1. the crossroads of the south, north, east and west roads are designed to be separated and separated to establish a two-layer overpass. (1) The first layer is the upper and lower course of the south and north. (2) The upper and lower roads in the east-west direction are second-layer overpasses. Vehicles in the north-south direction can go straight when passing through the crossroad. And the vehicles on the upper and lower roads in the east-west direction can also go straight through the overpass. The design can be implemented according to the specific conditions of the crossroads and the national standards of the overpass constructed by the country. And (5) carrying out construction. The design scheme of the first floor and the second floor of the urban crossroad. The design can be carried out according to the actual situation and the actual requirement of traffic. Three lanes or four lanes. The conditions of green belts of sidewalks and the like need to be considered. The main solution here is the problem of straight travel in the east-west and north-south directions. The first and second layers are designed to be six meters in height. The limit height is 5.4 meters. The road widths in the east-west direction and the south-north direction may be determined according to the existing actual widths of the respective city intersections.

Plan view fig. 2 illustrates:

fig. 2 adds a third layer (3) on the basis of a second layer. Namely the people going out of the turn floor. With the scientific concept of human-oriented basis, a turning layer, namely a third layer, of urban crossroads needing to turn and pass pedestrians is designed. And designing a third layer. An upper slope overpass and a lower slope overpass are arranged in each direction of the east, the west, the south and the north for the travelers to go up and down the third layer for steering and passing. Thus, the safety purpose of the personnel on the trip is achieved. When the electric bicycle, the bicycle and the trip personnel are ridden, the third layer can be turned to achieve the purposes of turning and passing. The diverted and passing person can descend the ramp overpass to the direction you want to go to the first and second floors. To reach the direction of the destination to which the traveling person is going. The separation of the human body and the vehicle is achieved. Safe, efficient and ordered travel is realized. The height of the second layer to the third layer is six meters. The diameter of the third layer of the turning layer of the traveling personnel is designed to be 40 meters to 50 meters. (this may be the case). 8 inclined plane overpasses. The length of the inclined plane overpass from the first layer to the third layer is designed to be 350-400 m. The inclined plane overpass from the second layer to the third layer is designed to be 250 meters to 300 meters in length and three meters in width. The technical requirements of the inclined plane overpass and the design and construction are according to the relevant design and regulation standards of the state. The engineering design related aspects are designed according to actual situations. The data are only used as reference for design and construction. And designing a third layer of turning layer, namely the turning layer of the trip personnel. The problem of trip personnel's trip at traffic crossing traffic jam and the emergence of traffic accident is solved. At the crossroad, a safe channel is provided for people. The separation of people and vehicles is realized. A new level of safety is achieved. In order to facilitate safe and comfortable traveling of travelers and disabled persons, four upright posts are arranged in the angular directions of east, west, south and north to support the steering layer (note: the support posts are optionally added appropriately to increase the stability and safety of the steering layer of the third layer). Four elevators are arranged in four directions, and passengers on the first floor and the second floor go up and down the third floor to turn and pass. The four elevators are designed to facilitate people to turn to the third layer of the turning layer from the first layer or the second layer and bring convenience for going out of the elevator on the road. Because people only walk on the sidewalk, the contact with the vehicle is avoided. Thus avoiding the occurrence of traffic accidents. Greatly facilitating the trip of people. Greatly saves the time of people and accelerates the running of cities. The living standard of people is improved. The elevator is additionally arranged in the second position (the second four-side column, namely the four-side second-side support column side seat is additionally provided with the four elevators), so that the elevator is greatly convenient for people to get in and out and carry out various activities. It is explained here that the sidewalk can be properly left outside the ramp overpass of the sidewalks in the north and south directions to allow people to go down the way or go straight without occupying the driveway, so as to achieve the purpose of safety. And a 1 m square is properly widened at the starting point of the sidewalk slope overpass on the second floor, so that the straight movement of pedestrians is facilitated. So as to realize the safety of the personnel going uphill and straight. As shown in the figure: (1) the south and the north go up and down. (2) And going up and down to the overpass in the east-west direction. (3) Pedestrian turns to layer overpass.

Plan view fig. 3 illustrates:

after the design of the turning layer of people in travel is completed, a fourth layer vehicle turning layer is designed. The height is three meters from the third layer to the fourth layer. All vehicles that need to be steered in the north-south direction. The vehicles needing to be steered in the east-west direction of the second layer are respectively steered to the special steering layer of the vehicles on the fourth layer along the self steering road (namely, the lane close to the right side of the road) along the slope and the inclined plane overpass. The four-side eight-direction inclined plane overpass is also designed. The vehicle does not turn to the intersection any more at the urban ten-turn intersection, but turns to the fourth layer of turning layer by going straight on the turning road (i.e. the lane on the right side of the road). Then the overpass continues to drive forwards along the direction that the vehicle wants to go. The separation of people and vehicles and the separation of straight going and steering are achieved. People and vehicles completely cancel the time of waiting for vehicles at the crossroad. The separation of straight running and steering is realized. The straight movement of the person is separated from the turning. The separation of straight-going and turning of the vehicle. The phenomenon of congestion at the urban crossroads is thoroughly changed. The traffic jam and the traffic accident at the urban crossroad are thoroughly avoided. Social resources are saved. The pain of traffic police is avoided. The trouble of traffic lights and waiting for traffic lights is eliminated. Specific design data, requirements for design data: the vehicle specific steering plane is designed to have a diameter of 80 to 100 meters. The height of the third layer to the fourth layer is three meters. A flyover with inclined planes in the north-south direction. The design width is four meters and the length is 400 meters. The length of the inclined plane overpass from the east to west direction from two layers to four layers is 300 meters to 350 meters. The design standards of the special turning layer of the fourth layer and the four-sided eight-bevel overpass are based on the national standard design. For example, a plurality of upright posts of the inclined plane overpass, and a girder and the like are required on a steering layer, and the upright posts are designed and constructed according to the relevant national standards. The overpass is designed to have a total height of 15 m: the first layer is six meters high, the second layer is six meters high, the third layer is six meters high, and the fourth layer is three meters high. As shown in the figure: (1) the south and the north go up and down. (2) And going up and down to the overpass in the east-west direction. (3) Pedestrian turns to layer overpass. (4) A vehicle turning layer overpass. (5) The special inclined plane overpass for the vehicle turning layers from the first layer to the fourth layer goes up and down the road. (6) The overpass has one-layer to three-layer pedestrian inclined plane overpasses. (7) There is a first field. And the ramp overpass goes up and down from the second layer to the fourth layer. (8) And the sidewalk inclined plane overpasses from the second layer to the third layer go up and down. The figure 5 of the model and the figure 7 of the model.

FIG. 4 illustrates:

cross-sectional view of the overpass in the north-south direction. (1) The south and north of the urban crossroad faces to the ground level outside the upper and lower road surface section diagram road. (2) pile columns of a second layer of overpass at the city crossroad in the east-west direction, and (3) pile columns of a pedestrian turning layer. Four piles are arranged at included angles in four directions of the urban crossroad for supporting a pedestrian turning layer. And (4) four piles are respectively arranged at the urban crossroad to support a vehicle steering layer, and four corner elevators are respectively arranged at four corners between the third pile and the fourth pile to facilitate the up-down steering and passing of pedestrians. (5.) shows a ramp overpass from the first to the three sidewalk turn levels. The pedestrian can turn and pass along the third turn layer up and down the sidewalk. (6.) the vehicles turning at the urban crossroad turn to the fourth layer of the ramp overpass on the right turning lane. Namely an overpass with an upper road and a lower road inclined planes for turning the fourth layer of vehicles. (7.) urban crossroads east-west direction overpass schematic diagram. Note: 1. the length of the overpass should be 1 km. Note: the number of piles it supports should be designed according to the specific situation and national standards at 1 km. (8.) the third pedestrian turning layer of the urban crossroad. (9.) the vehicle at the urban crossroad turns to the special floor. (10.) pile columns of the ramp face overpass sidewalk overpass from the second floor to the turning floor in east-west direction at the urban crossroads (according to actual conditions and national standards), a plurality of pile columns are properly arranged for supporting the ramp face overpass. (11.) the urban crossroad is a ramp overpass from the east-west direction of the two floors to the pedestrian turning floor. (12.) the urban crossroad is a ramp overpass with two-layer to four-layer vehicle turning layers in the east-west direction. (13.) pile of inclined plane overpass of city crossroad east and west direction turn to the layer from second floor right turn to the fourth floor, used for supporting the overpass below. The number of the components can be designed and constructed according to the actual situation and the relevant national regulation standard. 3.4. East-west, south-north and every direction has two upright posts. 5.6. Each side of the urban crossroad has 4 inclined plane overpasses. See fig. 8 and 9 and the optical disc in detail.

FIG. 5 illustrates: the cross section of the urban crossroads in the east-west direction is basically consistent with that of the urban crossroads in the north-south direction. Except that the pedestrian is diverted from the second floor to the third floor diversion floor. The vehicle is steered from the second floor to the fourth floor. Due to the reduction in height, the overpass length is also reduced. See the city. See FIG. 10 and description of the optical disc.

FIG. 6 illustrates: cross-sectional view of the overpass at the north and south of the urban crossroad. 1.2.3.4 shows a cross-sectional view of a four-layer overpass in the north-south direction. 5. The schematic diagram of the overpass with the inclined surface of the pedestrian path from one layer to three layers is provided with the overpass with the inclined surface of the vehicles from one layer to four layers. 6. The pedestrian slope overpass is schematically represented by a pedestrian slope overpass with the side surface in the east-west direction from two layers to three layers. 7. The cross section of the city crossroad in the north-south direction. Schematic diagram of a ramp overpass on the side surface of a two-layer to four-layer vehicle turning layer. See fig. 8 and 9 and the optical disc in detail.

FIG. 7 illustrates:

1.2.3.4. urban crossroads. And designing a cross section of the east-west four-layer overpass. 5. The vehicle turns to the ramp overpass from two layers to four layers. And 6, a sidewalk inclined plane overpass from two layers to three layers. 7. The side face north-south direction face is from one layer to three layers of sidewalk inclined plane overpasses. 8. The north and south directions. Schematic diagram of a bevel overpass from the first layer to the fourth layer of vehicle steering layer on two sides.

FIG. 11 illustrates:

the angle of the strands in the east-west direction. The overall appearance of the traffic light-traffic accident-free high-efficiency high-speed overpass at the urban crossroads and the visual angle of the elevator evacuation population are shown.

FIG. 14 illustrates:

the angle-added vision of the southwest direction of the east-west direction and the south-north direction shows the comprehensive and full appearance of the safe and efficient high-speed overpass without traffic lights and traffic accidents at the urban crossroads.

The fifth embodiment is as follows:

(1) the construction method of the novel safe and efficient overpass without traffic lights and traffic accidents at the urban crossroads comprises the following steps: firstly, the steel frame structure can be considered to be designed and used for constructing the overpass, and design, construction and construction can be carried out. And the concrete can also be designed, constructed and built by cement reinforced concrete pouring, box girder and other structures. The construction standard is implemented according to the national relevant construction standard.

(2) In very congested large cities. The design scheme of the overpass can be used for construction design construction and construction. The device is used for thoroughly solving the phenomenon of traffic jam and people blockage in cities. The phenomenon of traffic jam and people blockage is avoided, so that the current phenomenon of city congestion confusion, especially at school gates, and traffic accidents frequently occur. These phenomena are completely eradicated from now on. And the traffic crossroads of medium and small cities are treated. The design scheme of the overpass can be flexibly applied: the whole design scheme of the overpass can be used at a larger crossroad. And crossroads with special turning layers for sidewalks can be set at crossroads with basically lighter congestion. Can be used separately. And (4) eliminating a vehicle steering layer. The intersection with dense population can be changed into a special sidewalk intersection by separate use, and an elevator is arranged (a sidewalk inclined plane overpass can be eliminated, namely, the intersection can be set at intervals on the basis of convenience for pedestrians. The overpass can be designed to use a vehicle turning layer to turn (cancel a pedestrian turning layer) at a larger intersection. The flyover of the turning layer of the people and the vehicle can be separately arranged. Crossroads in medium and small cities can be respectively provided with a turning layer of a sidewalk and a vehicle turning layer overpass at the vehicle crossroads. So as to achieve the safe traveling and the smooth walking of vehicles and people in medium and small cities. And reduced design and construction costs. The choice can be made according to the environment of the urban intersection and the supply of materials. The purpose of convenient, fast and labor-saving construction is achieved. And a foundation is laid for building a highly civilized society. Efforts are being made to achieve two struggle goals.

Fig. 1 is a plan design diagram of a first floor and a second floor of a safe and efficient overpass (hereinafter referred to as an innovative overpass) without traffic lights and traffic accidents at an urban crossroad.

Fig. 2 is a third level plan design drawing of the inventive overpass.

Fig. 3 is a plan design view of the fourth layer of the inventive overpass.

Fig. 4 is a cross-sectional view of the construction of the inventive overpass in the north-south direction.

Fig. 5 is a schematic view of the ramp overpass in the north-south direction of the inventive overpass.

Fig. 6 is an east-west cross-sectional view of the inventive overpass.

Fig. 7 is a schematic view of an east-west inclined plane overpass of the inventive overpass.

Fig. 8 is a north-south direction model diagram of the inventive overpass.

Fig. 9 is a north-south model diagram of the inventive overpass.

Fig. 10 is an east-west direction model diagram of the inventive overpass.

Fig. 11 is a schematic diagram of a model of the innovative overpass in north-south direction and east-west direction plus angle (southeast direction).

Fig. 12 is a schematic diagram of a model of the fourth layer (top) of the inventive overpass.

Fig. 13 is a schematic diagram of a top model of the inventive overpass.

Fig. 14 is a schematic diagram of an innovative overpass model in the east-west direction and the south-north direction (southwest direction).

Claims

1. Innovative design scheme of completely efficient high-speed overpass without traffic lights and traffic accidents at urban crossroads

The problem of serious traffic jam which people want to solve for a long time in cities is solved. The flyover is specially designed. Namely, the innovative full high-speed high-efficiency overpass without traffic lights and traffic accidents at the urban crossroads. The problem of urban traffic jam is fundamentally solved. The fundamental problem that people are difficult to go out is solved. And is safe, efficient, high-speed and accident-free. The urban crossroad keeps smooth under the condition of no traffic light. The occurrence of traffic accidents is thoroughly avoided, and the running speed of urban traffic is improved by 50 percent. People are not annoyed by traffic jams. The overpass is designed to have four layers. The first layer is a bidirectional four-lane road in the north-south direction. The first floor is designed to be six meters in height, and the height limit is 5.4 meters. Various vehicles including trucks and the like can run straight and always keep passing: the east-west bidirectional four-lane overpass is the second layer. The design height is six meters, and the limit is 5.4 meters. And the east-west direction is the second layer of the overpass. The second floor is designed to be six meters high, and can run straight including trucks and various vehicles. Therefore, vehicles in the east-west, south-north and eight directions and four-side and eight-direction are ensured to be unobstructed, and are not mutually winding, and straight vehicles do not have any resistance. But also always keeps smooth and unobstructed. The following designs solve the turning problem of people and vehicles at the crossroad: the phase separation of straight running and turning and the phase separation of straight running and turning of people and vehicles are consistent and are considered and solved. The problem that people and straight going in the east-west, south-north directions is solved by solving the problem of one layer and two layers of solution roads in the first step, and then the problem that people and vehicles need to turn is solved. I design a third layer on top of the second layer. I.e. the pedestrian turn layer. The third layer of the pedestrian needing to turn and the pedestrian riding the electric bicycle turns. The design is that the pedestrians can turn by riding the third layer on the elevator and can also turn by riding the third layer on the overpass of the sidewalk. In the first and second layers, people needing to turn in eight directions respectively turn along the third layer on the respective sidewalks. Therefore, 8 sidewalks in four directions can be designed to freely move up and down the inclined plane overpass. One can go to turn to any direction. Or can be turned by one floor or the second and third floors on the elevator. And steering can be performed on the third layer on the overpass sidewalk. And the person who needs to turn the direction goes to the third turning layer. The safety purpose of separating the straight movement and the steering of the trip personnel is realized. Greatly facilitating the people. The time of two people is saved. Thereby avoiding the occurrence of traffic accidents. The phenomenon that people and vehicles are mixed is avoided. Four elevator trip personnel are designed to go down to turn to the use last time in four plus angles of the east, the west, the north and the south of the intersection. Namely, the elevator is designed in four columns, and people can freely choose when needing to turn. The elevator can get on the third floor of the elevator to turn and then get off the elevator. To the direction in which it was going. The device can also turn along the third layer on the sidewalk overpass and the third layer on the elevator, so as to achieve the aim of people-oriented safe, rapid, convenient and comfortable travel. It should be noted that the pedestrians in the east-west direction in the second floor can reach the travel destination along the crossroads under the sidewalks. Or the user can get to the travel destination by taking the elevator to the first floor. The real purpose that pedestrians can be evacuated in all directions is achieved. After the problem of straight going and turning at the crossroad is solved, a fourth layer and a vehicle turning layer are designed. The vehicles need to turn at the urban crossroads. Namely, the vehicles needing to be steered on the first layer and the second layer are steered to the steering layer on the fourth layer along the respective ascending inclined plane overpasses. And similarly, two overpasses with inclined planes are designed on the upper and lower roads in each direction. Eight oblique plane overpasses are designed on the four sides. Thereby solving the problem of the need to steer the vehicle. The height from the third layer to the fourth layer is designed to be six meters, and the height is limited to 5.4 meters. Thereby thoroughly solving the problems of straight-going and turning people and vehicles at the urban crossroad. The separation of straight running and steering and the separation of the north-south direction road and the east-west direction road are realized. The purposes of thoroughly avoiding traffic jam and improving the speed of the urban vehicles by 50 percent are achieved. Therefore, people and vehicles are not in trouble at the urban crossroads due to waiting for traffic lights, and the operation of cities is accelerated. The life rhythm of people is accelerated. Basic ideas and data of design: the overpass is designed to have four layers. The heights of the first layer and the second layer are respectively designed to be six, the third layer is designed to be three meters, and the fourth layer is designed to be six meters. The design plane diameter of the third sidewalk turning layer is 40-50 meters (which can be determined according to the actual situation of the urban crossroads). The width and the area of the sidewalk, the upper vehicle lane and the lower vehicle lane of the urban crossroad and the width and the area of the green belt and the sidewalk can be adjusted according to the appropriate change. Such as by appropriate adjustment as determined by the width of the green belt walkway. The design plane diameter of the vehicle steering layer of the fourth layer is 80 meters to 100 meters: the length of the sidewalk inclined plane overpass is 300 meters, and the width of the sidewalk inclined plane overpass is three meters (the length of the inclined plane overpass from the first layer to the third layer is 300 meters, and the length of the inclined plane overpass from the second layer to the third layer is 250 meters to 300 meters). The overpass on the turning section of the vehicle on the fourth floor is 400 meters in length and four meters in width (the length of the inclined plane overpass from the first floor to the fourth floor is 400 meters, and the length of the inclined plane overpass from the second floor to the fourth floor is about 300 meters to 350 meters). Therefore, the overpass at the urban crossroads is designed with two straight lines in the east-west direction and the south-north direction and three-layer and four-layer turning layers. The separation of straight going and turning, the separation of vehicle and people, and the separation of north-south direction and east-west direction have been realized. Thoroughly avoiding troubles brought to people by waiting for traffic lights. The traffic accidents at the urban crossroads are avoided. We therefore claim the rights to be protected. The following were used: 1. the method requests protection for the whole design form of the high-speed and high-efficiency overpass which is innovative and has no traffic lights, safety and traffic accidents at the crossroads of the urban crossroads. 2. The whole design concept and the design method are applied for protection. 3. The related data is protected by the data request which is properly adjusted according to the actual situation. 4. The method of setting overpasses at urban crossroads to design elevators applies for protection. 5. The design scheme of the medium and small cities for light traffic jam of the medium and small cities is as follows: the flyover can be designed as a flyover special for a pedestrian turning layer at an urban crossroad. The intersection B is the overpass for the vehicle turning layer and requires protection for the setting mode. The weight is 80 to 100 meters: the length of the sidewalk inclined plane overpass is 300 meters, and the width of the sidewalk inclined plane overpass is three meters (the length of the inclined plane overpass from the first layer to the third layer is 300 meters, and the length of the inclined plane overpass from the second layer to the third layer is 250 meters to 300 meters). The overpass on the turning section of the vehicle on the fourth floor is 400 meters in length and four meters in width (the length of the inclined plane overpass from the first floor to the fourth floor is 400 meters, and the length of the inclined plane overpass from the second floor to the fourth floor is about 300 meters to 350 meters). Therefore, the overpass at the urban crossroads is designed with two straight lines in the east-west direction and the south-north direction and three-layer and four-layer turning layers. The separation of straight going and turning, the separation of vehicle and people, and the separation of north-south direction and east-west direction have been realized. Thoroughly avoiding troubles brought to people by waiting for traffic lights. The traffic accidents at the urban crossroads are avoided. We therefore claim the rights to be protected. The following were used: 1. the method requests protection for the whole design form of the high-speed and high-efficiency overpass which is innovative and has no traffic lights, safety and traffic accidents at the crossroads of the urban crossroads. 2. The whole design concept and the design method are applied for protection. 3. The related data is protected by the data request which is properly adjusted according to the actual situation. 4. The method of setting overpasses at urban crossroads to design elevators applies for protection. 5. The design scheme of the medium and small cities for light traffic jam of the medium and small cities. The method can be respectively designed into flyovers special for pedestrian turning layers at urban crossroads, and the flyovers at the urban crossroads in the vehicle special fields are set up and are required to be protected.