103 results about "Urban main road" patented technology

The invention discloses a traffic time period control method for improving the traffic efficiency of adjacent intersections of main roads. The method comprises the following steps: on the basis of traffic demand distribution information of urban main roads, obtaining main road traffic demand OD information of different time periods each day through the multi-source data analysis technology, obtaining traffic demand amounts, real-time vehicle arrival rates and vehicle queue lengths of entrance lanes of adjacent intersections to be optimized of the main roads during different time periods, andtaking the sum of all OD amounts of all directions of the entrance lanes of the intersections within a certain time period as the traffic demand amount of the direction within the time period. According to the traffic time period control method disclosed by the invention, the signal control of the entrance lanes of the adjacent intersections is optimized based on the historical data traffic information, so that the occurrence of the decline of the traffic capacity of the adjacent intersections can be prevented more effectively, the occurrence of traffic congestion is avoided, the traffic efficiency of the intersections is maximized, the control method is easy to implement, and the traffic time period control method has a wide application range and a good application prospect.

The invention discloses a dynamic coordination and control method of traffic signals of an urban main road. Aiming at characteristics of traffic low of the urban main road of our country, bidirectional vehicle flows of the main road continuously pass through by coordination of the traffic signals on the precondition of ensuring green light utilization time of each intersection and phase on the main road. According to a real-time traffic condition, public signal period time, a phase green signal ratio of each intersection and a phase difference between adjacent intersections can be dynamically calculated; and starting time of a coordination phase is optimized on line, and green conflicts of a bidirectional coordination phase of the main rod are avoided through early stopping and delayed emission of a left-turning signal in the coordination phase. According to the dynamic coordination and control method, average traveling time and an average stopping rate of the traffic flow of the main road can be effectively reduced, and an application effect is better than that of a tradition single-point timed control method and a static coordination control method, so as to provide an effective control method for dynamic coordination and control of the traffic signals of the urban main road.

The invention discloses an intelligent control method of a traffic light of an urban main road. The method comprises: according to an intersection serial number carried by a linked control request from a congestion intersection, a main road intersection state table is queried to obtain a first main road identifier and a second main road identifier of the current intersection and an upstream adjacent intersection and a downstream adjacent intersection of each main road of the current intersection; with an inflow vehicle traffic detection and an outflow vehicle traffic detector that are arranged at each main road section at the main road direction, the numbers of vehicles that are going to pass through the current intersection and upstream and downstream adjacent intersections of the main road and vehicle traffic capacities per unit time of the current intersection and upstream and downstream adjacent intersections are obtained; according to the number of all vehicles that are going to pass through the intersection and the vehicle traffic capacities per unit time, needed vehicle passing time of the current intersection and the upstream and downstream adjacent intersections at the main road is determined; and on the basis of needed vehicle passing time, green light linked control time of the current intersection and the upstream and downstream adjacent intersections at the main road is determined to carry out linked control. According to the invention, vehicles on the main road can be guided rapidly and the worsening traffic congestion can be prevented.

The invention relates to a whole image sound barrier for an urban quick lane and a tunnel portal. The sound barrier is characterized by consisting of gate-type arc steel arch racks arranged in the upper space of a pavement, and a sound barrier main body framework consisting of rigid tie rods for connecting the adjacent arch racks and cross supporting rods, wherein purlines are arranged on the main body framework; and meanwhile, the purlines arranged on the main body framework are used as supports, anti-collision wall contact faces are formed symmetrically on the left and right sides along the central axis of the sound barrier till the pavement, and a sound absorber, a ventilated exhaust part, a sound absorber, a lighting part, a sound absorber and a lighting part are arranged at intervals, so that a full-closed for semi-closed whole image sound barrier structure capable of totally isolating direct sound is formed for a road. The whole image sound barrier for the urban main road can effectively reduce the traffic noise of the urban main road, effectively reduce the reverberation in a sound barrier area and ensure the safety and the comfort degree of a road user, and is a sound barrier suitable for a building dense area nearby the urban main road.

The invention discloses a method for evaluating the traffic state in the connection position of entrances and exits of an urban underground parking lot system. The method includes the steps of firstly, analyzing the traffic condition of the connection position of the entrances and exits of the underground parking lot system and an urban main road; secondly, establishing an evaluation index of the entrances and exits of the underground parking lot system, and calling a VISSIM program module to conduct traffic analogue simulation calculation according to indexes including the number and widths of the entrances and exits of the underground parking lot system, the length of ramps of the entrances and exits, the length and the lane width of an underground motor vehicle annular corridor, the underground parking berth number, the underground vehicle average speed, the underground parking time distribution and the like; thirdly, obtaining traffic situation evaluation data of all the entrances and exits of the underground parking lot system at different morning-evening peak hours, and conducting comparative analysis to obtain the change rules of the traffic state in the connection position of the entrances and exits. By means of the method, the design reference foundation is provided for reasonably designing and refitting the underground parking lot system and the entrances and exits of the underground parking lot system and improving the service level of the entrances and exits.

The invention relates to an urban main road traffic operation information processing method based on floating vehicle data. The method comprises the following steps: 1) map-matching is carried out on GPS original data transmitted by a floating vehicle, and a coordinate of a vehicle position is matched to a road network to obtain GPS operation data; and vehicle operation statuses on different road segments are displayed through combining with a map; 2), pretreatment is carried out on the GPS operation data, and the pretreatment process comprises sample screening and speed calculating; and 3), extraction of traffic operation characteristic indexes are carried out, and the average speed, the speed variance and the speed distribution are calculated; a speed-distance curve, a speed skewness coefficient, a kurtosis coefficient, a speed mileage distribution map and a speed time distribution map are output. Compared with urban main road traffic operation information processing methods in the prior art, the urban main road traffic operation information processing method based on the floating vehicle data of the invention has advantages of utilizing a taxi floating vehicle technique to analyze and process urban road traffic operation and to obtain indexes such as the road segment average speed, the speed fluctuation and the speed distribution; and the floating vehicle data of the invention has an advantage of being able to reflect a whole road segment traffic operation status, etc.

The invention discloses a water removing device for an urban road. The device comprises a first fixing board and a second fixing board, a soft part is arranged between the first fixing board and the second fixing board, the two ends of the soft part are fixedly connected onto the first fixing board and the second fixing board respectively, the soft part is arranged in a sunken position on the road surface, a water-absorbing part capable of deformation recovery is arranged at the outer side end of the second fixing board, a water-absorbing cavity is formed in the water-absorbing part, and the outer side end of the water-absorbing part is provided with a drainage pipe which extends out of the water-absorbing part and is arranged in the roadside of the road. The device is installed on the road surface with water, firstly, the device can be used as a function of speed bumps, secondly, the water-absorbing part can be deformed through the pressure of passing cars, and then the water in the water position is absorbed and discharged; no electric energy is used, drainage is completed by adoption of a simplest way, and normal passage of the road surface is guaranteed.

The invention discloses a maintenance apparatus for a distribution line of an urban road. The maintenance apparatus is used for removing bird nests from a telegraph pole so as to ensure power transmission safety of the distribution line. A rotary plate is rotationally mounted on a vehicle body; the rotary plate is provided with a shears-fork type lifter; a lifting adjustment mechanism is arranged on the top of the shears-fork type lifter; a movable plate which can move up and down is arranged on the lifting adjustment mechanism; a big arm is mounted on the movable plate in a hinging manner; a big arm swinging mechanism used for driving the big arm to swing is arranged on the movable plate; a small arm is hinged on the big arm, and a small arm swinging mechanism used for driving the small arm to swing is arranged on the big arm; the small arm is hinged with a front arm, and a front arm swinging mechanism used for driving the front arm to swing is arranged on the small arm; a clamping assembly is arranged at one end of the front arm; the clamping assembly is used for clamping and dismantling bird nests; a push rod assembly is arranged at the other end of the front arm, and the push rod assembly is used for absorbing residual branches by air suction; and a branch recycling assembly is arranged on the vehicle body and used for realizing collection of branches. By virtue of the maintenance apparatus, power transmission safety of the distribution line can be effectively guaranteed.

An adaptive ILC (iterative learning control) based coordinated control method for urban main roads comprises: a. determining a key intersection: for the controlled main roads, the intersection with the largest traffic demand is determined as the key intersection; b, initializing the common signal period, green time ratio and phase difference; c, optimizing the green time ratio at key intersections; d, optimizing the green time ratio at non-critical intersections; e, performing circulation, and repeating steps c and d every 3-5 signal cycles. According to the control method, the intersections are taken as a control object and are coordinated in pairs by flow correlation between the upstream and downstream intersections, green time of each phase of a traffic light is calculated with an ILC method according to real-time vehicle flow conditions, and finally, closed-loop controller parameters are set in real time by an unfalsified strategy. The real-time calculation amount of main road control is reduced, the traffic efficiency of the main roads is improved, the effect is better than that with the traditional timing control scheme, and the effective method is provided for coordinated control of the urban main roads.

The invention provides a method and system for judging vehicle retrograde violation based on GPS geographic position information. The method comprises the steps of dividing an electronic map into a plurality of grids to obtain a refined main road grid map in a city, marking lane lines in the grid map, and determining and recording correct advancing directions of a left lane line and a right lane line; projecting an original point on a vehicle running track to a lane corresponding to the grid map to obtain a matched mark point on the grid map; and determining the traveling direction of the vehicle according to the position change of the mark point on the vehicle running track, and judging whether the vehicle travels illegally. According to the technical scheme, the vehicle position information in the geographic space can be accurately matched into the electronic map, the vehicle running track can be quickly judged, vehicle driving is effectively standardized, the problem that vehicles on urban main roads violate the rules and run reversely is solved, and the occurrence rate of traffic accidents is reduced.

The invention discloses a barrier-free base construction method for urban roads. The construction process of the barrier-free base construction method comprises the following steps: preparation before construction, construction-parameter determination, spreading, rolling, treatment of an inspection well, joint treatment, maintenance and traffic control. The barrier-free base construction method disclosed by the invention has the advantages that the construction is convenient, and the construction effect is good; the same height of the inspection well and a road bed in spreading is ensured, so that no barrier exists on the road in spreading; simultaneously, the continuous supplying is adopted, so that the construction efficiency is greatly improved; the adopted technology is advanced, the safe and reliable effects can be achieved, and the economic benefit and the social benefit are obvious, so that the barrier-free base construction method is worthy of being promoted and applied.

The invention discloses a method for separately constructing an underground expressway under urban main roads and a subway shield zone, which is used for underground engineering construction in soft muddy soil in coastal regions. The method specifically comprises steps as follows: 1) underground continuous wall construction and foundation consolidation are performed; 2) uplift piles and erect column piles are constructed; 3) the soil mass is excavated to the bottom of a first support, top beams and concrete supports are poured, the soil mass is sequentially excavated to the bottom of a secondsupport and the bottom of a third support, each steel support is erected, prestress is applied, the soil mass is excavated to the bottom of a designed foundation pit, and plain concrete cushion layersand underground express framework bottom plates are poured; 4) the third support, the second support and the first support are sequentially dismounted, side walls are poured, framework inside supports are erected, a framework top plate is poured, and the columns are dismounted finally; 5) an additional waterproof layer of the framework top plate is constructed, and soil filling is performed to recover the urban main roads. Compared with the prior art, the problems of unsafety, structure instability and the like during construction are solved, and a new thought is provided for construction ofthe underground expressway tunnels and the subway shield zone in the soft muddy soil in the coastal regions.

The invention discloses a method for excavating an upper-soft lower-hard formation small-section tunnel underneath an urban main road, and the method is mainly applied to excavation construction for the small-section tunnel underneath the urban main road under a complex formation condition. Since geological conditions for tunnel construction are poor and settlement of a ground level road must be strictly controlled, the face of the tunnel is divided into five sections for sequential and alternate excavation from soft to hard and from top to bottom according to the rock and soil distribution situation of the excavated face of the tunnel in the tunnel excavation construction process; along with the reduction of the to-be-excavated face during excavation, drilling footage can be effectively controlled, and disturbance to the original formation around the tunnel is reduced accordingly; and after excavation is completed, sealing and supporting can be conducted quickly, the exposure duration of the excavated face is shortened to the maximum extent, and therefore, construction safety is guaranteed.

The invention discloses a construction process of an urban main road. The construction process comprises the steps of construction preparation, roadbed excavation, roadbed filling, embankment slope protection and pavement construction. The construction preparation process comprises the steps of determining an on-site working boundary line, survey and setting out and cleaning a site; the roadbed excavation process comprises the steps of excavating a base, trimming a slope of a subgrade bed and compacting the subgrade bed; the roadbed filling process comprises the steps of survey and setting out, base treatment, filling, soil filling and rolling compaction, filling and excavating joint part construction and fill section drainage; the embankment slope protection process is carried out, and grass planting protection is adopted when the height H of the embankment slope is less than or equal to 3m; when the height H of the embankment slope is greater than 3m, a mortar rubble framework is adopted for protection; a solid revetment is adopted in the fill pond section; the pavement construction process comprises the steps of laying a graded broken stone hardcore, constructing a cement stabilized broken stone base layer and constructing an asphalt concrete surface layer. According to the construction process, the overall stability of the road surface can be improved, and differential settlement is avoided.

The invention relates to a ramped urban road of a sponge city, and belongs to the technical field of urban road construction. A glass planting ditch is formed in the middle off the road. First rainwater gardens are symmetrically arranged on the two sides of the road. Auxiliary lanes are arranged on the outer sides of the first rainwater gardens. Second rainwater gardens are arranged between the auxiliary lanes and sidewalks. Third rainwater gardens are arranged outside the sidewalks. Sunken greenbelts are arranged outside the third rainwater gardens. Water storage pools are arranged under the sunken greenbelts. The bottoms of the first rainwater gardens, the bottoms of the second rainwater gardens and the bottoms of the third rainwater gardens are connected with the water storage pools through overflow water inlet pipes. Drainage pipes are arranged on the outer sides of the water storage pools. Through natural terrains, too many underground pipelines do not need to be paved, ground surface construction can be conducted directly, laying of the underground pipelines is reduced, the ground does not need to be dug largely, the construction period is shortened, and the road improvement cost is greatly reduced; and maintaining and managing are simple, and compared with traditional lawn landscapes, the rainwater gardens can bring new landscape perception and visual perception to people.

The invention discloses a construction method for jointly building an underground fast road and a rail traffic interval under an urban main road. The construction method comprises the following stepsthat 1, the construction of an underground continuous wall is carried out, an inclined tube is pre-buried, and cement stirring piles and anti-sinking piles are applied; 2, a soil body is excavated, supports are sequentially applied, and after the soil body is excavated to the bottom of a large foundation pit, the soil body is excavated to the bottom of a small foundation pit according to the designed slope, and a plain concrete cushion layer is poured; 3, a structural bottom plate and a side wall of the rail traffic interval are poured sequentially, the two sides of a rail cross section structure are backfilled, and a fast road frame bottom plate is poured; 4, a fourth support is disassembled, the side wall of a tunnel frame is poured upwards, and the supports are replaced; 5, a third support is disassembled, and the fast road tunnel frame top plate is poured; 6, a second support and a first support are removed in sequence, and then the supports are disassembled; and 7, lattice columnsare cut off, an additional waterproof layer is applied to the tunnel frame top plate, soil covering and backfilling are carried out, and the road surface of the urban main road is restored. The invention provides an effective solution method for building the underground fast road tunnel and the rail traffic interval in silt soft soil.

The invention relates to an urban road system and a corresponding underground railway system, aiming at providing a scheme which can not only improve traffic efficiency of an urban road network and reduce energy consumption of urban traffic, but also improve urban structure and urban livable value. The technical scheme comprises the essential that in the whole or part of the urban area, a road network is structured according to the way of forming a net structure of hexagon added with triangle. Compared with a traditional rectangle city, the road of the hexagon added with the triangle can reduce at least 18.4 percent of road distance, and enable the road in each area inside the road network to be closed relatively, thereby enhancing traffic speed on an urban main road, and effectively improving traffic efficiency and urban traffic structure.

The invention relates to a filtering, purifying, collecting and drainage system for urban roads. A pavement structure comprises motor vehicle lanes, curbs, sidewalks, lawns, regulating reservoirs, municipal pipe networks and the like sequentially from middle to two sides; a gravel filtering layer, a purifying medium layer, an activated carbon core filtering layer and a geotextile layer are arranged below the motor vehicle lanes, the curbs and the sidewalks, a plurality of rainwater collection modules are provided, drainage collecting pipelines are connected to an urban pipeline, and a gravel-grit layer is arranged at the bottommost end of the whole pavement structure. When the pavement slopes, the whole pavement structure is preferentially perpendicular to the slope. The filtering, purifying, collecting and drainage system for urban roads has the advantages that the system has simple structure, good performance under stress, high bearing capacity and good quality and is capable of recycling, storing, filtering and purifying rainwater, clipping peaks for regulation, conserving lawns, and improving underground water sources and the environments such as ecology and soil, and the pavement ponding problem is effectively solved.

The invention provides an overhead pavement for an urban road. The overhead pavement comprises a ground level road and an overhead building, and is characterized in that: a pedestrian bridge is erected on the original pavement of a road across a motorway, and different sections of the pedestrian bridge with the height difference are connected through ramps or steps; the pedestrian bridge is provided with stairs or elevators in public areas such as residential district exits, commercial districts, hospitals and the like, near main intersections or at intervals; cross structures are also erected on corresponding sections of the pedestrian bridge; entrance and exit sections of the stairs or elevators below the pedestrian bridge are provided with partial barriers, or a section below the pedestrian bridge is provided with a continuous barrier; the outer ends of the entrances and exits of the stairs below the pedestrian bridge are sealed by guardrails to prevent people from suddenly entering the original pavement after walking down the stairs; meanwhile, the original pavement is reformed into a bicycle lane and the original bicycle lane is reformed into the motorway so as to separate the motorway, the bicycle lane and the pavement.

The invention discloses an elevator system for a rapid main road. The elevator system comprises a running track, a lift car and a driving device; the running track comprises a first lifting track body, a second lifting track body and a transverse movement track, wherein the first lifting track body and the second lifting track body are arranged on the two sides of the road, and the two ends of the transverse movement track are connected with the first lifting track body and the second lifting track body; the driving device drives the lift car to do reciprocating motion along the first lifting track body, the transverse movement track and the second lifting track body; a bicycle containing zone is arranged at the top of the lift car and comprises a supporting plate, a lifting driving mechanism, a bicycle positioning device and a hydraulic cylinder; the lifting driving mechanism drives the supporting plate to do reciprocating motion between an upper limiting position and the bottom of the lift car, the upper limiting position and the top of the lift car are provided with gaps used for containing bicycles, and a turnover zone and a containing zone are arranged on the upper surface of the supporting plate. By means of the elevator system, pedestrians and the bicycles can conveniently go across the rapid main road, and bicycle containing is achieved through the bicycle containing zone.

The invention relates to a three-dimensional transportation system for an urban main road, which solves the problem that the existing traffic mode can not adapt to road traffic flow pressure caused by increasing quantity of automobiles. The three-dimensional transportation system for the urban main road comprises a main line and branches, wherein the main line comprises an elevated road and a ground layer; a subway tunnel is arranged at the lower part of the ground layer; upright columns are arranged on the elevated road; the upright column in the center of the elevated road is deep into the lower surface of the subway tunnel and connected with a tunnel upper surface and a tunnel lower surface; the upright columns on the two sides of the elevated road are connected integrally with the side walls of the subway tunnel; a left tunnel and a right tunnel are arranged on the two sides of the subway tunnel; at a large-scale intersection, the left tunnel and the right tunnel are connected with the branches on the road by virtue of an underground flyover; the left tunnel and the right tunnel are connected by virtue of a left turn-in ramp and a right turn-out ramp arranged on the main line; and the branches are connected with the left tunnel and the right tunnel by virtue of right turn-in ramps and right turn-out ramps arranged on the branches. The three-dimensional transportation system is scientific in design; and because of an integral design of the upright columns of the elevated road and the walls of the tunnels, the pile foundation of the upright columns is not too deep so as to avoid easily destroying water channels on the underground deepest parts; and therefore, the traffic pressure on the road is effectively relieved.

A realization method for manifesting a public-transportation smooth pass index comprises five steps including collection of positioning information of vehicle-mounted terminal equipment, real-time data communications, resolution and analysis of data packages, cleaning and sampling of data and calculation of the smooth pass index, wherein the calculation of the smooth pass index comprises five parts including the public-transportation smooth pass index, speeds among public-transportation stations, positive and negative accumulation effects, speed weights and a calculation formula of the public-transportation smooth pass index. The realization method for manifesting the public-transportation smooth pass index provided by the invention is beneficial in that the realization method for manifesting the public-transportation smooth pass index provided by the invention is different from a "traffic jam index" generated from analysis of floating vehicle real-time data and aims to reflect traffic situations of urban main roads so as to help management departments in the transportation industry optimize public transportation basic equipment and facilities and provide decision-making support for people to go out conveniently via public transportation.

The invention relates to a vehicle overload discrimination method based on BP neural network, which comprises the following steps: S1, preprocessing the overload source data; S2, establishing an overload model by using a BP neural network structure; S3, substituting the pretreated overload source data into the overload model to obtain the load prediction value. The invention firstly carries out data preprocessing and integration on the collected various data so as to obtain source data for overload analysis. Then on the basis of distinguishing transport time and road type, the source data is divided into transport time and road type (freeway, urban expressway, urban main road, urban secondary road, urban common road). In different periods of transportation, for each road type, the BP neural network is used to model, and the mathematical model between vehicle driving behavior and vehicle load is obtained. The rated load of specific vehicle type is compared to determine whether there isoverload phenomenon in the vehicle.

The invention discloses an urban road overhead garden type electric skip-floor parking business building. The urban road overhead garden type electric skip-floor parking business building comprises a parking floor (1), elevators (2), a parking lot (9) on the first floor, a parking lot (23) on the second floor, a teahouse layer (32) and a garden layer (34), wherein column pins at two sides in the parking floor (1) and column pins at two sides outside the parking floor (1) are arranged on piled buildings in the center of a road or street centre and on flower-tree guiderail foundations at two sides; the column pins of the parking floor (1) are cement reinforced concrete in-situ buildings; transverse beams and longitudinal beams on each floor are connected with each other by cement reinforced concrete so as to be fixed and paved on the plane of each layer in a cast-in-situ way; the peripheries of the parking lot (9) on the first layer, the parking lot (23) on the second layer and the garden layer (34) and handrails on the periphery of a courtyard (36) are cast in situ by using cement reinforced concrete; the outer inner ring of the teahouse layer (32) is built by using bricks; a car exit roach bridge (5) and a car entrance roach bridge (6) on the two ends of the parking floor (1) are built on the flower-tree guiderail foundations at two sides of the road or street; the entrance and the exit of the parking lot (9) on the first layer of the parking floor (1) are provided with the elevators (2) for transporting cars up and down.

The invention relates to a sunken type greenbelt irrigation system, in particular to an urban road two-side sunken type greenbelt irrigation system. Sunken type greenbelts are arranged between a road and sidewalks, and water drainage windows flush with the surface of the road are arranged on the edges of the road and are connected with the road and the sunken type greenbelts. The edges, close to the sidewalks, of the sunken type greenbelts are provided with water drainage windows flush with the surface of the road, and the water drainage windows are communicated with the sunken type greenbelts and impounding canals. Irrigation devices are installed on the sunken type greenbelts and are communicated with the impounding canals. Compared with the prior art, the urban road two-side sunken type greenbelt irrigation system has the following advantages that the utilization rate of water resources is improved; the dispatching times of watering carts are decreased, the influence on traffic is reduced, and exhaust gas emission is reduced; the maintenance costs for the greenbelts are saved.

The invention discloses a gray heat-reflecting cooling coating, an application thereof in asphalt pavements, and a preparation method of the coating. The coating comprises, by weight, 100 parts of a water-based polyurethane polymerization emulsion, 1-20 parts of a metal oxide mixed phase pigment, 2-15 parts of a heat reflection filler, 1-10 parts of inorganic hollow micro-particles, 0.1-5 parts ofa dispersant, 1-30 parts of a flatting agent, 0.1-5 parts of a defoaming agent, 1-10 parts of a leveling agent, 3-20 parts of a plasticizer, 0.2-6 parts of an anti-sagging agent and 0.05-2 parts of agel. The gray heat-reflecting cooling coating can reflect 80% or above of near-infrared lights, can be applied to the surfaces of pavements, house buildings and various steel structures, and can reduce the temperature by 10-20 DEG C in summer. When the coating is used for asphalt pavements, the pavement temperature can be greatly reduced, and damages such as ruts and burst caused by high temperature are reduced; and the coating is especially used for urban main roads, the urban heat island effect can be effectively relieved, and the living environment is greatly improved.