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2354results about "Roadways" patented technology

Urban intelligent traffic and transportation system and running method thereof

ActiveCN102708681AMaximize the efficiency of the transportation systemSolve traffic jamsRoadwaysRoad vehicles traffic controlTraffic congestionRoad surface
The invention relates to an urban intelligent traffic and transportation system, which comprises a full-interchange totally enclosed light elevated road passage, unmanned electric intelligent trolleys, nodal stations, an intelligent dispatching system, a solar power generating system and a logistic service system, wherein power supply rails are laid on a road surface of the passage; positioning bar codes and navigational lines are laid on the top surface in the passage and the road surface of the passage; and solar power generating plates are laid at a passage top. Passengers swipe cards at nearby nodal stations and select destinations, and the intelligent trolleys generate the best driving paths according to the destinations and the dispatching information and automatically run with the help of the locating bar codes and the navigational lines, so as to directly send the passengers to the destinations. The urban intelligent traffic and transportation system aims to solve the problems of urban traffic congestion, low efficiency, serious pollution, high traffic cost, low safety factor and the like, and has the characteristics of full interchange, full throughway, intelligent driving function, intelligent dispatching function, rapidity, high efficiency, environmental friendliness, conservation, convenience, safety and the like.

Novel highway embankment widened structure and construction method

The invention relates to a novel highway embankment widened structure. The original roadbed slope of the structure is trimmed into a step shape, a high pressure jet grouting pile is disposed below an original roadbed slope cushion layer, pressurized continuous grouting is employed at an original roadbed cushion layer to form a slurry solid bearing plate, parts of pore cavities of the original roadbed are recharged with fine aggregate concrete or mortar; foundation treatment piles are employed to reinforce the foundation of a widened area, a drainage cushion layer is laid throughout the top of the foundation treatment piles; an earthwork cloth is laid on the drainage cushion layer, a cement soil plate is disposed on the earthwork cloth, high strength reinforcing mesh sheets are disposed in the cement soil plate; and the widened area embankment is formed by layered filling of excavation soil and light filler in a construction process. The structure provided by the invention can reinforce the bearing capacity of roadbed soil on both sides of the widened area and the original roadbed slope strength, and enhance the integrality of the embankment structure, reduce longitudinal cracks induced by differential settlement and the like at the juncture of new and old roadbeds, thus having good technical and economic benefits. The invention also discloses a construction method of the novel highway embankment widened structure.

Flat intersection left turn entrance lane removing method and method for driving on flat intersection left turn entrance lane

InactiveCN102051845ASmooth and safe trafficEliminate the construction of overpassesControlling traffic signalsRoadwaysCarriagewaySignal light
The invention relates to a flat intersection left turn entrance lane removing method and a method for driving on a flat intersection left turn entrance lane. A flat intersection comprises two bidirectional lane crossed roads, a right turn lane and a left turn lane. The left turn lane comprises a left turn entrance lane, a left turn waiting lane (1), a crossing lane entrance (2), an intersection signal light (4), a lane area (6), a lane area signal light (4) and an oblique signal light (5), wherein the left turn entrance lane which used to be arranged on the left side of an entrance lane at the intersection now is removed to the right side of an exit lane (8); the left turn waiting lane (1), the crossing lane entrance (2) and the intersection signal light (4) are arranged in a rear section far from an original left turn entrance lane; and the lane area (6), the lane area signal light (4) and the oblique signal light (5) are arranged in the exit lane (8). Vehicles to turn left run to the left turn waiting lane (1) from a running lane (14) to wait for a green light and then run through the crossing lane entrance (2) and the lane area (6) to a left turn entrance lane (7) on the right side of the exit lane to wait for turning. The design adopted in the invention eliminates a conflict point which occurs when the vehicles to turn left and vehicles to go straightly run together, shortens time limit periods of red and green light at the intersection, and relieves traffic jam and disturbance at the flat intersection.

Multifunctional road soil roadbed freezing and thawing circulating test device

The invention discloses a multifunctional road soil roadbed freezing and thawing circulating test device. During a freezing and thawing circulating test, six samples are placed among six top plate heat exchangers and six bottom plate heat exchangers of a constant temperature system; the six top plate heat exchangers and the six bottom plate heat exchangers are respectively connected in parallel with a refrigeration circulating machine set; a moisture replenishment system is connected with the bottoms of six roadbed soil samples; a temperature sensor and a soil moisture sensor of a test systemare respectively buried in the six roadbed soil samples of the samples; a displacement sensor of the test system is in contact with the top of the top plate heat exchanger of a temperature control system; and the temperature sensor, the displacement sensor and the soil moisture sensor are connected with an acquisition channel of a data acquisition instrument of a data acquisition system. The multifunctional road soil roadbed freezing and thawing circulating test device has the advantages of simple structure, convenient use, high test precision and reliable result, can better complete the parallel test measurement of the engineering design parameters of roadbed soil modulus of resilience, CBR (Constants Bit Rate) intensity, and the like in a seasonal frost region under a least favorable state, which cannot be achieved by the traditional devices, and can directly provide necessary design parameters for engineering design.

Method for filling highroad roadbed by waste steel slags

The invention discloses a method for building a highway road bed with waste steel residues. The method comprises the steps: firstly, waste steel residues are adopted to build the road bed; secondly, the building speed of the road bed built with waste steel residues is required to be controlled to guarantee the road bed stability; thirdly, the road embankment built with waste steel residues is compacted by a vibratory road leveling machine in layers, during the compacting, the waste steel residues shall be in the optimum moisture content scope, through the trial road section method, the appropriate compacting machines and tools are determined, and the maximum dry density and the optimum moisture content are adopted as the compaction degree calculating standard in the road bed built with waste steel residues; and fourthly, the cross section design of the waste steel residue road embankment comprises the road embankment height, the side slope ratio of the road embankment, the building layer thickness, a top sealing layer, a bottom sealing layer, an intercalated layer, the slope protection and a drainage system. The invention has the advantages that the method is easy, the operation is convenient, the waste steel residue piling ground and the environmental pollution are reduced, the wastes are changed into valuables, the environmental protection is promoted, the method solves the problem that the highway engineering packing material is inadequate, the cost is low, and the quality of the built road bed can satisfy the construction requirements of the road bed of the higher grade highway.

System for kinetic model test of ballastless track subgrade of high-speed railway

The invention discloses a system for kinetic model test of the ballastless track subgrade of a high-speed railway. The system comprises a model test box, a model of the ballastless track subgrade of the high-speed railway, an excitation system and a monitoring system, wherein the model of the ballastless track subgrade of the high-speed railway is formed by the foundation, a foundation bed bottom layer, a foundation bed surface layer, a concrete base, CA (cement asphalt) mortar, a track plate, a fastener system and a steel rail in sequence; the excitation system comprises a series of vibration exciters; simulation of train loads at different running speeds is realized by cooperatively controlling the vibration excitation frequency and phase of each vibration exciter; and dynamic earth pressure sensors and layered settlement gauges are arranged in the model of the subgrade, steel strain gauges are embedded in the concrete base and displacement and acceleration sensors are arranged on the track structure to jointly form the monitoring system of the system. The system can be used for carrying out study on the kinetic model test of the subgrade under the running load of the train and can evaluate and predict different foundation conditions, subgrade structures and track irregularity.

Reversible lane control method at intersection under influence of left-turn short lane

The invention provides a control method for the signal timing design, the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes at the intersection of reversible lanes with/without the arrangement of a left-turn short lane. In consideration of the influence of a left-turn short lane on the saturation flow rate of an entrance lane, the phase effective green light time and the functions of reversible lanes are adopted as decision variables, and the minimization of the vehicle delay rate at the intersection and the maximization of the traffic capability at the intersection are adopted as objective functions. In this way, a signal timing optimized model system at the intersection is established based on the operational research and the traffic flow theory. Meanwhile, a specific design principle for designing the lane signs of reversible lanes is provided from the point of drivers. According to the traffic flow operating rule and the behavior characteristics of drivers, different coordination control rules for the traffic signal lamp bank of reversible lanes and the lane signs of reversible lanes are designed respectively for two conditions, namely the function invariable condition of reversible lanes and the function variable condition of reversible lanes during the control period switching process. The embodiments of the invention prove the feasibility and the validity of the above method. By adopting the above method, the intersection congestion problem caused by the tidal characteristics of the traffic flow can be effectively alleviated.

Lane dynamic partitioning control method for expressway intersection area

ActiveCN103871241AImprove traffic capacitySolve or ease traffic congestionRoadwaysDetection of traffic movementTraffic flowExclusive right
Provided is a lane dynamic partitioning control method for an expressway intersection area. For the expressway intersection area, based on the actual traffic state, lanes of the intersection area are dynamically partitioned into intersection area lanes and non-intersection area lanes through signal indication signs. The intersection of the upper ramp traffic, the lower ramp traffic and the mainline traffic is achieved by means of the intersection lanes; the exclusive right of way is provided for the non-intersection traffic flow of an expressway mainline by the utilization of the non-intersection lanes. The control method comprises the two parts of the dynamic partitioning of the functions of the intersection area lanes and the control over the functions of the intersection area lanes, and the lane function dynamic partitioning model regards the overall through-out capacity maximization as a target, and determines the number of vehicles on the intersection lanes and the non-intersection lanes; the lane function control part comprises a control strategy implementation scheme, information publishing equipment arrangement and an isolation implementation method. The method can provide the exclusive right of way for the expressway mainline traffic in the intersection area, and reduce the interference to straight vehicles of the mainline by the intersection behavior, thereby improving the through-out capacity of the intersection area; under the condition that the vehicles line up and overflow at an off-ramp, the straight vehicles of the mainline can pass through normally, the vehicle average delay is reduced, and the bottleneck problem of the expressway weaving area is solved or relieved.

Lane setting at road intersection and corresponding traffic light control method

A lane setting at a road intersection and a corresponding traffic light control method. It does not distinguish between primary and secondary roads, so that the number of entrance and exit lanes of each main phase is kept equal; the entrance lanes are divided into three parts: "entrance guide lane", "peripheral guide lane" and "bus and right-turn lane"; according to the direction of travel Arrange the lanes, light groups, signal groups and phases symmetrically on the horizontal axis of the horizontal axis; at the intersection, run the main phase of A going straight——B going straight——A turning left (including U-turn)——B turning left (including U-turn); The "peripheral traffic lights" alternately operate the two phases of straight-going vehicles moving forward and left-turning (including U-turn) vehicles moving forward, and an evergreen phase and "electronic police" for directing right-turning vehicles and buses to pass; according to the number of left-turning vehicles Decide whether to control the clearance of pedestrian crossings in units of full or half-way. This method can make the number of lanes passing by each phase of the intersection reach the maximum on the basis of equilibrium, and is conducive to the priority of public transportation and the convenience of pedestrians.
Owner:胡又宏 +2

Flowing backfill and preparation and construction method thereof

The invention relates to a flowing backfill, belonging to the field of civil engineering. The flowing backfill comprises the following components by weigh part: 100 parts of cement, 500-1000 parts of soil and 250-450 parts of water, wherein the ratio of the cement and the soil is controlled between 0.1 and 0.2, and the ratio of the water and a solid material is controlled between 0.41 and 0.43. A construction method of the flowing backfill comprises the following steps: firstly, clearing a foundation pit; secondly, preparing the flowing backfill according to the requirements; finally, carrying out on-site pouring and maintaining, wherein the pouring of the flowing backfill can be pumped or filled in the specified position by the diversion of sliding grooves without compacting or vibrating, and after completing the pouring, the flowing backfill needs to be covered with alpine meadow soil to be maintained for over 24h before allowing vehicles and pedestrians to pass through. The flowing backfill provided by the invention has the characteristics of self-compacting, environmental protection, economy, adjustable strength and the like, and is suitable for bridge abutment backfill, road widening subgrade backfill, underground engineering and pipeline construction backfill and the backfill of construction foundation pits with narrow operating space and the like.

Ecological protection method for sand-filling road foundation hollow block

The invention discloses a side slope protection method for sand-filled road bed. The method comprises the following steps: performing drainage treatment of the base of slope, anchoring according to the slope rate of the roadbed side slope, wrapping sand in woven bag, stacking on the slope, back-filling, artificially compacting, finishing the slope, paving pre-cast concrete hollow block with settlement joints in the gaps, packing oakum or pitch in the joints, filling earth in the hollow portions, artificially compacting and leveling, and coating turf covers. The invention has the advantages that the invention successfully overcomes the stability problem of side slope of sand-filled road bed, and can efficiently prevent the collapse of outside clay during the construction on the sand-filled road bed and the damage of shallow layer caused by compaction failure of the sand-filled road bed; the invention can efficiently drain the water accumulated on the foundation of sand-filled road bed and simultaneously prevent the loss of sand particles; the field construction is more convenient; the production scale is flexible; the whole slope is orderly, stable and beautiful; the erosion resistance of side slope is improved; and the drainage capacity of the protective surface is improved.

Sand dredger filling construction method of soft soil foundation embankment

InactiveCN102605697ASolve the leveling problemGuarantee the construction qualityRoadwaysFlatness problemLand resources
The invention discloses a sand dredger filling construction method of a soft soil foundation embankment. The sand dredger filling construction method comprises the steps of: (1) cleaning the surface of an embankment dredger filling field; (2) measuring and lofting, and setting an elevation mark of the dredger filling construction in a dredger filling region; (3) performing the dredger filling work in a manner of segmenting and layering, to be specific, forming a cofferdam, establishing plastic water discharge plates, building construction roads, distributing grit blasting pipe lines, dredger-filling the embankment, constructing a drain opening, and constructing water collecting wells; and (4) performing stability observation and settlement observation on the dredge-filled sand land of the embankment. The sand dredger filling construction method disclosed by the invention has the advantages of solving the flatness problem of road area at coastal tidelands, rivers, fishponds and the like, performing roadbed filling of municipal administration by fully making use of the characteristics of abundant fin sand resource in the local area, reducing exploitation usage amount of the land resource, decreasing construction cost while guaranteeing construction quality of the roadbed, being simple, convenient, feasible, efficient and practical, increasing working efficiency, saving cost and creating conditions for advanced construction of the next procedure.

Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof

The invention relates to a three-dimensional-drainage roadbed structure for preventing water damage of a road in a cold region. The structure is characterized in that a three-dimensional drainage system consisting of horizontal drainage layers, vertical drainage passages and a slope drainage layer is arranged inside a road embankment; the horizontal drainage layers comprise at least two horizontal reinforced drainage layers; the vertical drainage passages are arranged between the topmost reinforced drainage layer and the bottommost reinforced drainage layer; a roadbed slope is laid with a drainage plate and a geotechnical waterproof material layer; a longitudinal and transverse drainage pipe network is arranged inside the bottom reinforced drainage layer; each middle reinforced drainage layer is provided with an air duct; a geotechnical waterproof material layer and a geotechnical reinforced material layer are laid on the top and at the bottom of each reinforced drainage layer respectively. Through reasonable arrangement of a three-dimensional drainage and waterproof structure in a roadbed, water can be quickly removed from the roadbed from multiple layers, thus helping to protect a road surface from frost heaving, thaw collapse, frothing and other problems. The invention further discloses a construction method of the three-dimensional-drainage roadbed structure for preventing the water damage of the road in the cold region.
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