4275 results about "Road construction" patented technology

A movable-body navigation information display unit is provided. In the movable-body navigation information display unit, a driver can intuitively and accurately recognize a relation between navigation information and a real picture or a real landscape. In addition, it is possible to avoid a state that visibility of a caution-needed picture such as a pedestrian in the real picture and a real picture of a road construction site is inhibited by an image of the navigation information. An image data creating section (405) matches road shape data with a road shape model to estimate posture data. In addition, the image data creating section creates picture (image) data for accurately compositing and displaying the image of the navigation information in an appropriate position in a real picture (or in a real landscape) of a road ahead of a movable body, and displays the navigation information as a three-dimensional icon or the like. A picture display section (5) performs display based on the picture data.

A retractable speed bump helps control the speed of a vehicle traveling through a special speed zone such as a school zone or a road construction site. A housing is either buried in the roadway or is placed into a ramp that seats on top of the roadway, the housing having a retractable canister therein, which canister extends above the housing in response to the speed of a vehicle as detected by a speed sensor. The greater the speed of the vehicle, the greater the level of extension of the canister. The canister may have tire shredding spikes or explosive charges therein.

The present invention relates to asphalt modified with desulfurized rubber powder for road construction. The modified asphalt is produced with desulfurized rubber powder 5-30 wt%, asphalt 70-95 wt% and compatibilizer 0-1.5 wt% and through high speed shearing stirring for grinding in colloid mill. The modifier desulfurizing rubber powder has good dissolving and swelling performance in asphalt and has much active radicals in the surface for bonding with asphalt, and the compatilizer can further increase the interaction between the rubber powder and asphalt, so that the modified asphalt has excellent high and low temperature performance and storage stability.

The invention discloses a method and a system for monitoring paving thickness of a high-level highway pavement in real time, belonging to the field of road construction quality control. The method comprises the following steps: erecting an automatic tracking total station nearby a paving site, determining the position of an erection point through a resection survey method according to the known point coordinate, positioning and tracking a 360-degree prism according to enough short time interval by utilizing the automatic tracking total station, measuring the inclination angles of a transverse beam and a longitudinal beam of a platform trolley in the device by adopting an inclinometer, and measuring the distance from the transverse beam to the paved pavement by adopting a laser distance measuring sensor arranged on the transverse beam; calculating three-dimensional coordinates (x, y, z) of the position points of the paved pavement measured by each laser distance measuring sensor according to a spatial geometrical relation between each laser distance measuring sensor and the prism; projecting to obtain elevation z0 of the position point on a datum plane before paving; solving the difference between elevations z and elevation z0 to obtain the paving thickness; and judging whether the paving thickness at the position point accords with the control standard, otherwise, transmitting alarm information. The method is mainly applied to road construction quality control.

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 present invention relates generally to the field of release agents commonly in uses in preventing asphalt and other sticky compounds such as rubbers from sticking to the transporting vehicles such as dump truck beds and processing tools, and equipment, and more particularly to a novel biodegradable release agent applied to metal surfaces prior to use for promoting free release of sticky hot-mix asphalt materials from the metal tools and equipment used in road construction applications.

The invention discloses a blind user navigation service system based on a global positioning system (GPS) and a 3rd-generation (3G) network. The system comprises a blind user navigation terminal for acquiring the current position information of a user, downloading a travel scheme given by a navigation server and broadcasting general navigation information to the blind user by voices. The system is characterized by further comprising a central database and the navigation server, wherein the central database stores an electronic map and road condition information; and the navigation server acquires destination information to be reached by the blind user and the current position information of the blind user from the blind user navigation terminal by a high speed network, simultaneously calls the electronic map and the road condition information from a storage server, calculates a navigation distance and an optimal path based on a genetic algorithm to finally form a navigation scheme, and publishes the navigation scheme to the blind user navigation terminal. The system may synchronize information about traffic light, road construction, traffic accidents and the like, and timely synchronizes the information into the terminal by the 3G wireless network. Therefore, the user with visual impairment can move outdoors or indoors by the navigation service system.

The invention discloses an anchored roadbed widening method, which belongs to the technical field of road construction. The anchored roadbed widening method comprises the following steps of: firstly performing slope cutting on an old roadbed slope, then excavating a step on the old roadbed slope from the ground, obliquely drilling an anchorage hole into an old roadbed at the joint of the vertical plane of the step and the horizontal plane, placing a steel bar into the anchorage hole, and casting the steel bar and the old roadbed into a whole by pouring cement grout; laying a new roadbed in layers, rolling, flatly laying a geogrid on the step of the old roadbed when the new roadbed is filled to be aligned with the step of the old roadbed provided with the anchorage drilled hole, connecting a transverse rib of the geogrid with an end hook which is bent upwards of the exposed part of the steel bar, tensing the geogrid, fixing with the lower layer of a soil body, and finally filling soil on the geogrid and rolling. According to the anchored roadbed widening method disclosed by the invention, an anchor rod technology is used for reinforcing the old roadbed slope, the geogrid and the old roadbed are connected into a whole, the geogrid can be prevented from sliding on the step of the old roadbed, the stability of the new roadbed and the old roadbed is improved, and non-uniform sedimentation can be effectively controlled.

Embodiments of the invention provide a BIM-based (building information modeling based) road parametric auto-modeling method and system. The method comprises: establishing a topographic scene model using image data and digital elevation model data; breaking a road structure into multiple parts, and acquiring design data of each part; subjecting each part to unitary modeling according to its design data to obtain a corresponding unitary model; assembling the unitary models corresponding to the parts according to preset road construction specifications to obtain a road three-dimensional model; merging the road three-dimensional model with the topographic scene model through a preset algorithm to obtain a merged road real three-dimensional model; correlating the unitary models in the road real three-dimensional model with attribute information, and displaying. The embodiments of the invention also provide a BIM-based road parametric auto-modeling system. The method and system enable automatic modeling of a road and improved modeling efficiency and provide realistic three-dimensional displaying.

The invention relates to an emulsified SBS polymer modified asphalt and preparation method thereof. At present, emulsification and emulsified modified asphalt applied to surfacing is hard to produce and not stable in quality, high temperature performance improvement is not obvious. The raw materials of the invention are matrix asphalt, water, SBS asphalt modifier, compound asphalt emulsifier, emulsification stabilizer and hydrochloric acid; firstly the matrix asphalt is heated, added with SBS asphalt modifier and then stirred to be swelled, high speed grinding by colloid grinder and full dispersion are carried out, and heat preservation growth is carried out to obtain SBS modified asphalt; compound asphalt emulsifier is added into water, emulsification stabilizer smoothened by water in advance is added, and appropriate hydrochloric acid is added to adjust pH value, so as to obtain liquid soap; and finally the SBS modified asphalt is subject to temperature reduction and then mixed with the liquid soap and emulsification dispersion is carried out, thus obtaining emulsified SBS polymer modified asphalt. The invention is applicable to coat tacking, coat sealing, surface treatment, slurry sealing and asphalt pavement recycling, asphalt wet-mixing of road construction and cerement asphalt mortar layer of passenger special line plate type unballasted track.

Systems and methods are disclosed for providing road insurance for a road construction project. In one embodiment, a customer may request a first insurance coverage amount for a road in a road insurance management system. The road insurance management system may determine, based on one or more design requirements, a design score for the road, and determine, based on one or more build requirements, a build score for the road. The road insurance management system may further determine a road project score based on the design score and the build score. The road insurance management system may determine a road insurance premium based on the first insurance coverage amount and the road project score.

The invention discloses a close packing high-performance cement-based fiber composite product and a production method thereof, and particularly discloses a novel fiber-reinforced cement-based composite material product which is prepared by combining a close packing design high-performance cement technology with a hybrid fiber reinforcing technology and has the advantages of excellent constructability, ultrahigh strength, low deformation, high durability and the like. The close packing high-performance cement-based fiber composite product comprises a fiber-reinforced cement-based flexible anti-cracking surface layer and a fiber-reinforced close packing high-performance cement-based structural layer, wherein the fiber-reinforced close packing high performance cement-based structural layer is compounded on the fiber-reinforced cement-based flexible anti-cracking surface layer; 0-3 layers of netlike reinforced materials are paved in the fiber-reinforced close packing high-performance cement-based structural layer; and the fiber-reinforced cement-based flexible anti-cracking surface layer and the fiber-reinforced close packing high-performance cement-based structural layer are compounded in a mold with a decorative effect. The close packing high-performance cement-based fiber composite product is suitable for construction such as building outer wall decoration, indoor engineering construction, road construction, bridge construction and the like.

A plurality of solid core concrete blocks used in forming a retaining wall. The retaining wall can be used in building construction, road construction, landscaping, hillside erosion control, gardens, and like applications. Also, the retaining wall can be a straight wall, an angled wall or a curved wall depending on the application. Each of the blocks includes a vertical front face and rear face, a horizontal top and bottom and a vertical first side and second side. The first side includes a first ear and two sides of an angular first notch next to the first ear. One side of the first notch is parallel to a length of the front and rear faces and forms a side of the first ear. A second side of the first notch is disposed inwardly into the block and at an angle of 10 to 45 degrees from a horizontal line perpendicular to a length of the front and rear faces. When the first ear is broken off, a length of the second side of the first notch is extended for engaging a side of another block having a second ear broken off. In this manner, the retaining wall can be angled or curved during the wall construction.

The invention discloses an ex-situ washing remediation method for nitrochlorobenzene-contaminated soil, which comprises the following steps: crushing soil and sieving to remove stones and gravels; filling the soil into a washing reactor to fully mix the soil with a proper amount of washing solution, wherein the washing agent is ethanol; subjecting the washed mixture of slurry to two stages of sieving and filtering, wherein soil particles with large particle sizes are stopped by a screen; pumping the slurry mixture to soil-liquid separation equipment, recovering, filtering and purifying separated washing solution to regenerate the washing solution, regulating the concentration of the washing solution, and leaving the washing solution for washing at next time of washing. A sand filter column is used for filtering, active carbon is used for absorbing molecules of organic contaminants such as nitrochlorobenzene in the washing solution instead of molecules of ethanol serving as the washing agent, and thus, the washing solution is purified and can be recovered and recycling of resources is realized. The organic contaminant content of the washed soil reaches related standards. The soil particles which are sieved and filtered out can be used as building and road construction materials; and the soil particles obtained by solid-liquid separation can be used as raw materials for making concrete and fire bricks and also can be reclaimed. Thus, the whole soil remediation process is accomplished. In the invention, the process is easy to implement, small-scale industrial application can be realized, and an effective means is provided for scientific researchers for researching soil remediation.

Disclosed is an automotive road construction engine (1), particularly a recycler or a cold stripping machine, comprising an engine frame (4) that is supported by a chassis (2), a working roller (6) which is stationarily or pivotally mounted on the engine frame (4) and is used for machining a ground surface or road surface (24). The chassis (2) is provided with wheels (10) or tracked running gears which are connected to the engine frame (4) via lifting column (14) and are vertically adjustable relative to the engine frame (4). The lifting columns (14) are composed of two hollow cylinders (13, 15) that can be inserted into each other, are used as a guiding unit, and preferably coaxially accommodate at least one piston-cylinder unit (16) therein for vertical adjustment purposes. Each individually vertically adjustable lifting column (14) is equipped with a device (18) for measuring the actual vertical state of the lifting column (14). Said measuring device (18) is coupled to lifting column (14) elements that can be adjusted relative to each other according to the vertical position in such a way that the measuring device (18) can continuously detect a path signal regarding the vertical position of each lifting column (14). A controller (23) which receives the measured path signals of the measuring devices (18) of all lifting columns (14) regulates the vertical state of the lifting columns (14) in accordance with the measured path signals of the measuring devices (18) and/or the changes thereof over time.

A road side parking management method comprises the following steps: installing a camera device on touring equipment, taking road side parking images according to regulated time intervals and routes,and transmitting real time touring time information, geological position information and parking image information to an intelligent processing terminal; enabling the intelligent processing terminal to receive information and send reasonable parking information to a parking charging server, and the parking charging server starts parking timing and charges according to the parking location and parking period. The method uses a movable camera device to take roadside parking images according to regulated time intervals and routes, inspects roadside parking stalls, intelligently obtains the license plate number information and parking time of the parking car in the parking stall, replaces artificial timing and charging, and preventing collectors from making profits in private; the method doesnot need to install equipment on road, thus preventing influences on traffic by occupying road construction, and reducing construction cost and maintenance cost; the method is easy to implement, greenand environmental protection, and complies with national energy saving environmental protection policies.

This invention relates to a process for processing heavy oil. The process comprises: removing asphalt from vacuum residual oil by butane deasphalting to obtain asphalt-free oil and oil-free hard asphalt, mixing asphalt-free oil with one or two of atmospheric residual oil and vacuum wax oil, catalytically pyrolyzing to obtain light hydrocarbons, gasoline and diesel oil with high added values, vacuum-distilling residual oil slurry to obtain light oil slurry and tapped heavy oil slurry, mixing light oil slurry with part of oil-free hard asphalt, pyrolyzing to obtain 7# commercial fuel oil, and adequately mixing tapped heavy oil slurry with the other part of oil-free hard asphalt in a static mixer to obtain advanced petroleum asphalt for road construction.

The invention belongs to the field of road construction quality control, and provides a device capable of realizing the automatic high-precision and real-time measurement on the highway pavement paving thickness. The real-time measurement of the pavement paving thickness can be realized, and measurement information can also be sent to a database in a remote way for subsequent quality assessment application and is used as the basis for relevant departments to realize paving quality management. Therefore, the invention has the technical scheme that a highway pavement paving thickness plug-in automatic measuring device comprises a measurement platform trolley, a paving thickness measuring module, GPS real-time positioning module, an integrated controller module, a DTU (date transfer unit), a database and a server module. The automatic measuring device is mainly applied to road construction quality control.

The invention belongs to the field of road construction quality control, and provides a device which can be used for automatically monitoring the pavement paving thickness and ironing vibration frequency of a highway with high precision in real time. The device can be used for achieving real-time measurement on the pavement paving quality, can also be used for remotely sending measurement information to a database for follow-up quality evaluation application, ensures that the paving quality can meet design requirements, can perform real-time alarm on substandard conditions, and ensures that a statistical diagram is formed to be taken as the basis for relevant departments to carry out the paving quality management. Therefore, the device adopts a technical scheme as follows: a real-time monitoring device of the pavement paving thickness and ironing vibration frequency comprises a paving thickness and ironing vibration measurement device, a GPS real-time positioning device, an integrated controller and a data wireless transmission device (DTU), wherein the paving thickness and ironing vibration measurement device comprises a steel-made bracket, an inclined moving beam, a rubber wheel, an acceleration transducer and two tilt angle sensors. The device provided by the invention can be mainly applied to road construction quality control.

The invention discloses a multi-line laser radar and GPS-based three-dimensional road construction method. According to the invention, the three-dimensional point cloud data of an all-angle and all-directional surrounding space can be dynamically collected through adjusting a multi-line laser radar and a high-precision GPS. Meanwhile, collected discrete non-associated sparse point cloud data are correlated through the absolute geographic position information acquired by the high-precision GPS, and then the absolute geographic position of each point in the point cloud data is calculated throughthe correlation. Therefore, radar point cloud data collected at different time and in different tracks can be fully and effectively utilized. Finally, the point cloud data which are dense enough areobtained through mutually correlated point cloud data. After that, dynamic objects in the point cloud data are filtered out through the differential method. In this way, the three-dimensional map of areal road can be constructed based on the remained point cloud data of static objects. The constructed three-dimensional map of the road is real, accurate and reliable. Meanwhile, dynamic moving objects can be removed through the differential method. The obtained three-dimensional map of the road is clean and relatively high in reducibility.

The invention discloses a concrete laying and vibrating integrated device used for road construction, in particular to a device for stirring a concrete raw material in a material barrel through work of a stirring assembly, driving a driven shaft to rotate through a rotating output shaft, driving a crank-sliding block assembly by the driven shaft through a bevel gear set to work and finally drivinga vibrating board to move up and down in a reciprocating mode to vibrate a pavement. The concrete laying and vibrating integrated device effectively solves the problem that existing pavement concretelaying and vibration are finished through two working procedures, and construction consumes long time. The bottom of the material barrel communicates with a discharging pipe used for discharging concrete, a drive motor is installed on one side of a top board through a flange, and the output end of the drive motor is connected with the output shaft; the stirring assembly comprises a stirring shaftconnected with the upper end of the output shaft through a transmission piece and a stabilization frame, the stirring shaft is sleeved with the stabilization frame, the stabilization frame is installed on the inner wall of the material barrel, and multiple stirring blades are circumferentially fixed to the stirring shaft; and a vibrating assembly is arranged on the rear portion of a bottom boardand connected with the output shaft.

The invention discloses a composite curing agent for dredged silt in a watercourse, comprising a powdered agent and a liquid agent, wherein the powdered agent consists of the following components on the basis of 100 percent of the total mass fraction: 15-25 percent of cement, 45-65 percent of pozzolanic material, 10-20 percent of alkali activator and 5-10 percent of salt activator; and the liquid agent consists of the following components on the basis of 100 percent of the total mass fraction: 2-7 percent of polyvinyl alcohol, 2-7 percent of polyacrylamide, 0.5-1 percent of melamine sulfonate formaldehyde condensate and the balance of water. The dredged silt has high compressive strength after being solidified by the composite curing agent for the watercourse silt, and can meet the requirements of road construction.