2354results about "Roadways" patented technology

An exemplary embodiment a substrate transport system is provided. The system has a guideway and at least one transport vehicle. The transport vehicle is adapted for holding at least one substrate and capable of being supported from and moving along the guideway. The guideway comprises at least one travel lane for the vehicle and at least one access lane offset from the travel lane allowing the vehicle selectable access on and off the travel lane.

A structure for sheltering and optimizing highway systems includes an arcuate structure extending over a highway and a cover over the structure to create an enclosure. The enclosure protects the highway and users of the highway from rain, snow and sun while the surrounding scenery remains visible to drivers. A number of different additions optimize use of the highway. For example, a plurality of solar panels are layered on the cover and wind turbines are used to create usable energy, an air current generation system reduces wind resistance on vehicles to increase gas mileage, and an elevated rail system transports many persons great distances along the highway.

The present invention relates to ballast which have a high stability and a long service life and to a process for the production of ballast. These ballast are suitable for railway track laying and road construction and dike systems used for example in costal protection. These ballast comprise ballast stones and polyurethane foams based on a reaction mixture of selected polyisocyanates and selected compounds with isocyanate-reactive groups.

The invention relates to a method for optimizing and controlling the dissymmetrical space time of a roundabout; each inlet of the roundabout is provided with two sets of signal lamps which assign wayleaves to loop vehicles and intra-annular vehicles in turn in order that the vehicles pass through an annular-island interleaving section alternately according to a signal lamp control proposal. According to the condition of annular-island flow rate, the traffic signal time of a left-hand traffic flow is determined with the largest parking number as a constraint condition; in addition, the starting and the intermitting time of a traffic signal in a transverse and intersectant inlet road takes the safety of the traffic flow and the need of the largest traffic into account, actualizes flexible control measures and best coordinates and utilizes the space-time resource of the roundabout. According to the dynamic change of the traffic flow, the optimal control is carried out. The method for optimizing and controlling the dissymmetrical space time of the roundabout can effectively relieve the conditions of congestion and deadlock in the intersectant roundabout, improve the safety of the roundabout and is easy for practical application.

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.

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.

A sludge solidification method is a method for carrying out solidification treatment to the sludge produced in water conservancy projects and civil engineering. The method is that: a. the liquid water content, the clay content and organic content of dredging sludge are tested. b. curing agent is prepared: the curing agent mainly contains cement and calcium oxide which play the function of solidification; wherein, the weight proportion is between 1 : 1 to 4 : 1; waste gypsum is used as water reducing agent which occupies 1 to 8 percent of the sum of cement and calcium oxide in proportion; mealy sand or pulverized fuel ash are used as concrete aggregate which occupies 3 to 5 percent of the sum of the cement and calcium oxide in proportion; c. the curing agent-mixing ratio which is usually controlled from 5 to 20 percent is determined; sampling respectively is carried out, setting time is tested and the unconfined compressive strength which maintains 7, 14 and 28 days is tested by sampling, and the curing agent-mixing ratio finally is determined according to optimal performance price ratio; d. the sludge is carried out curing and constructing in site; mechanical devices are used for stirring the curing agent and the sludge rapidly and evenly, thereby leading the solidification to be rapid and full.

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.

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.

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.

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.

Numerous embodiments of one or more layers of void-maintaining synthetic drainable base courses (“VMSDBC's”) are provided as incorporated into landfills and other waste containment facilities. Key advantages of landfills and methods according to the invention include a substantial decrease in the necessity for conventional gravel and sand layers, and an increase in the effective volume of a landfill or similar facility. Moreover, the invention decreases the cost attendant to locating, transporting, and forming conventional rock, sand and gravel materials into discreet layers.

The invention discloses a method for checking artificial embankment body and foundation sink. The method comprises that embedding a deep sink detector and a shallow sink detector with hollow tubular structures in each checking layer along one normal line at object position in the artificial embankment body, and leading measuring device or measuring medium into a measuring channel formed by the shallow sink detector and a connecting tube, to measure the position change of the shallow sink detector and measure the height strike of the upper end of the connecting tube to find out the sink of each checking layer.

Provided are a vehicle having high degree of operation freedom due to electric power being able to be supplied to the vehicle during its travel and due to the vehicle being able to drive on normal roads, and a traffic system. A large number of overhead lines are arranged over a road. An extendable electric power collector is provided at the rear of the vehicle, and a battery and a drive mechanism are mounted on the vehicle. When the power collector is in contact with an overhead line, electric power supplied from the overhead line is supplied to the battery to charge it and electric power is supplied also to the drive mechanism. When the vehicle travel on a normal road having no such overhead lines, electric power is supplied from the battery to the drive mechanism.

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.

The invention discloses a plane road intersection dispersion system without a left turn conflict. A left turn guiding channel having a certain distance from stopping lines is arranged at a left-most lane in any driving direction of an intersection, a left turn waiting zone is arranged at an right-most lane of an inverted road of the same intersection, and the left turn guiding channel and the left turn waiting zone are connected. Left moving stopping lines and left moving traffic lights are arranged at the entrance of the left turn guiding channel. By utilizing the idle time that no vehicles are on the inverted road when the straight driving direction is in a red light period, left-turning vehicles are enabled to stop at the right-most side of the inverted lane, left turning is finished by one time during the red light period of the intersection, and no conflicts are generated between opposite vehicles. According to the invention, the smooth passing requirements of the straight-driving and left-turning vehicles are satisfied, the crossing conflicts and accidents of vehicles are reduced, and the vehicle passing capacity of the intersection is effectively improved.

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.

A transit system for individual vehicles includes a substantially enclosed guideway with a transit lane and a transition lane. Disposed along the guideway are selectively actuable portals, configured to allow substantially transverse ingress and egress of vehicles into the transition lane. The vehicles are configured for automatic control within the guideway and during ingress and egress, and may also be configured for independent control by a driver outside the guideway. In the transition lane the vehicles accelerate to a transit speed and merge into the adjacent transit lane. Upon approaching a selected destination portal, an individual vehicle merges back into the transition lane to decelerate for exit. The guidance system allows the vehicles to combine into controllably linked "trains" in the transit lane.

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.

The invention discloses a reinforcement method and a reinforcement structure for treating railway soft soil roadbed settlement overweight before operation. The reinforcement structure mainly consists of five parts, namely a main bearing structure system, a reinforced cushion layer structure system, a foundation bed drainage system, a settlement observation system and a reserved grouting system. The technical problems that the existing roadbed is greatly damaged, the construction period is long, the construction property is low, the quality is difficult to control and the problem that the soft soil roadbed settlement overweight is caused in the conventional technical scheme are effectively solved.

This invention discloses a single layer interchange overpass. The overpass comprises a main road (1) and an intersected road (3), a U-shaped circle road (24) is disposed at a predetermined level above both ends of the main road (1), an inner circle road (4) and an outer circle road (5) are disposed at the exit of each U-shaped circle road (24), a common ramp (7) is located between the inner and the outer circle roads (4, 5), the common ramp (7) is joined with an on-ramp of the intersected road (3) via the outer circle road (5); and an off-ramp of the intersected road (3) is joined with an on-ramp of the main road (1) via the inner circle road (4).

Construction features of roadbed are as follows: building vent-pipes perpendicular to direction of roadbed in certain depth of road embankment; installing ventilating units of automatic controlling temperature at end part of vent-pipe; setting up thermal-protection material between vent-pipes/entire up part of vent-pipes with earth material being covered and tamped. The said automatic controlling ventilating units carries out heat exchange between inside roadbed and airflow in low temperature outside. The thermal-protection material protects ever frost effectively. Thus, the invention prevents frost heave and thaw collapse caused by season change so as to keep stability of roadbed in high level. The invention solves issue of carrying construction in zone of frozen earth.

The invention relates to the field of constructional engineering, and particularly relates to a construction method for a sand-filling subgrade. The construction method for the sand-filling subgrade is characterized by comprising the following steps: clearing the subgrade, setting a drainage system, embedding a settlement and displacement observing device, starting paving, testing degree of compaction, and constructing a top-sealing layer. The construction method has the advantages of using high permeability characteristic of fine sand of Yangtze estuary to reasonably control construction moisture content for replacing high-quality soil as subgrade filler; using clay waste formed by processing subgrade substrate to fill an edge-covered soil structure and carrying out greening on the edge-covered soil structure; using a synchronous construction method for edge-covered soil and fine sand to ensure good connection and integral stability of the fine sand and the edge-covered soil; and effectively controlling and protecting the construction progress and the surrounding environment and reducing reduce the corresponding engineering cost.

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.

The use of water soluble product in construction that is at least partially encapsulated by a water resistant membrane layer, particularly, the use of phosphogypsum, preferably leached phosphogypsum, that is at least partially encapsulated by a geomembrane layer, thus enabling the use of phosphogypsum as a construction material.

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.

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.

The invention provides an all-pass method to locate roads of crossways, control signal lamps and traffic. It realizes all-pass of crossroads, which shortens the waiting time of vehicles, improves the traffic capacity and amends the phenomena of traffic jam. All-pass allows six kinds of vehicles on to-from roads (coming and going vehicles both contain three driveways of straight-going, left and right turning) transiting simultaneously. The invention arranges vehicles needing left turning on left side of roads when they entry the crossroads. When green light is started, the left-turning vehicles have no conflict with the straight-going ones, which realizes the all-pass on the six directions of the crossroads without cross of different directions. It can arrange left-turning vehicles into the left driveways in the time for another vehicles controlled by red light without adding waiting time. With a unique design of driveways, the invention makes use of vacancy of vehicle on converse driveways in red-light waiting time and matches corresponding control to realize all-pass. It shortens the waiting time of vehicles at crossroads, improves the traffic capacity and amends the phenomena of traffic jam.

The invention discloses a method and device for adjusting lanes and signal lamp periods based on vehicle queue lengths. The method comprises the following steps that a video detecting device detects the instantaneous vehicle queue lengths of respective lanes; an analyzing unit calculates the average queue lengths of respective lanes with different lane attributes within set time; the analyzing unit calculates a ratio of the average queue lengths of respective lanes with different lane attributes; and a control unit adjusts a corresponding lane attribute or the corresponding period length of a corresponding signal lamp according to the ratio of the average queue lengths of respective lanes with different lane attributes. The method and device for adjusting lanes and signal lamp periods based on the vehicle queue lengths improve the passing efficiency of an intersection by means of the variable lanes and the variable signal lamp phase periods.

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.