703results about "Paving reinforcements" patented technology

The FEBD seamless bridge deck connecting plate adopting the T-shaped shear nail structure comprises a semi-continuous UHPC bridge deck connecting plate arranged on the upper side of a telescopic gap at the beam end in a striding mode, and a polyurethane pavement layer used for bearing vehicle loads is laid on the upper side of the semi-continuous UHPC bridge deck connecting plate. T-shaped shear nails are arranged between the polyurethane pavement layer and the semi-continuous UHPC bridge floor connecting plate. According to the connecting plate, the seamless bridge floor can be realized, and the diseases such as pavement layer disengagement and hemming caused by large deformation difference when wheels pass through the expansion joint are obviously relieved; and in addition, the complex space stress state of the bridge deck can be better adapted, the normal use requirement of the bridge deck continuous structure is met, the construction period is effectively shortened, and the influence on traffic is small.

The utility model relates to an FEBD seamless bridge deck connecting plate adopting a T-shaped shear nail structure, which comprises a semi-continuous UHPC bridge deck connecting plate arranged on the upper side of a telescopic gap at a beam end in a crossing manner, and a polyurethane pavement layer used for bearing vehicle load is paved on the upper side of the semi-continuous UHPC bridge deck connecting plate. T-shaped shear nails are arranged between the polyurethane pavement layer and the semi-continuous UHPC bridge floor connecting plate. According to the connecting plate, the seamless bridge floor can be realized, and the diseases such as pavement layer disengagement and hemming caused by large deformation difference when wheels pass through the expansion joint are obviously relieved; and in addition, the complex space stress state of the bridge deck can be better adapted, the normal use requirement of the bridge deck continuous structure is met, the construction period is effectively shortened, and the influence on traffic is small.

The invention discloses a device for treating a vehicle jumping at a bridge head based on a negative Poisson's ratio inner hexagon reinforced soil, comprising a negative Poisson's ratio metamaterial structure, the negative Poisson's ratio metamaterial structure comprising a first negative Poisson's ratio metamaterial structure, the first negative Poisson's ratio metamaterial structure being buried at the slope surface where the road surface on both sides is connected to the abutment, the first negative Poisson's ratio metamaterial structure being formed by a uniform array of multiple negative Poisson's ratio unit cell structures, the negative Poisson's ratio metamaterial structure being buried at the slope surface where the road surface on both sides is connected to the abutment, the cross section of the negative Poisson's ratio unit cell being a hollow inner hexagon, the negative Poisson's ratio unit cell being composed of reinforced soil, and the inner cavity of the negative Poisson's ratio unit cell being filled with soil layers. The device has a simple structure and strong operability, and can cope with different differential settlements at the same time, thus having a wide range of applications.

The invention discloses a device for treating bumping at a bridge head based on negative Poisson's ratio internal hexagonal reinforced soil, which comprises negative Poisson's ratio metamaterial structures, the negative Poisson's ratio metamaterial structures comprise first negative Poisson's ratio metamaterial structures, and the first negative Poisson's ratio metamaterial structures are embedded in slope surfaces where road surfaces on two sides are connected with bridge abutments. The first negative Poisson's ratio metamaterial structure is formed by uniformly arraying a plurality of negative Poisson's ratio unit cell structures, the negative Poisson's ratio metamaterial structures are embedded in slope surfaces where road surfaces on the two sides are connected with a bridge abutment, the section of each negative Poisson's ratio unit cell is in a hollow inner hexagon shape, each negative Poisson's ratio unit cell is composed of reinforced soil, and an inner cavity of each negative Poisson's ratio unit cell is filled with a soil layer. The device is simple in structure, high in operability and capable of coping with different differential settlement, thereby being wide in application range.

The invention belongs to the technical field of roadbed structures, and particularly relates to a self-salt-reducing salinized soil roadbed structure and a building method, the self-salt-reducing salinized soil roadbed structure comprises a roadbed, an embankment, a lower roadbed, an upper roadbed, a pavement structure layer and a pavement which are sequentially arranged from bottom to top, and alkali removal ditches which are arranged on the roadbed and are respectively positioned on two sides of the embankment, each of the embankment and the lower roadbed comprises a plurality of salinized soil layers and a plurality of first salt discharge layers, the plurality of salinized soil layers and the plurality of first salt discharge layers are arranged in an interbedding manner, and the plurality of first salt discharge layers extend to the two sides of the embankment and the lower roadbed to be connected with each other and are connected with the inner wall of the alkali removal ditch; the multiple first salt discharge layers extend to the outer sides of the embankment and the lower roadbed to form salt discharge channels communicated with the alkali removal ditches; through mutual filling of the salinized soil and the salt discharging layer, the stability of the embankment is improved, sedimentation is reduced, self-purification of the roadbed is achieved, salt-containing filler can be converted on site, cost is saved, and the method adapts to rapid construction.

The invention discloses a green low-carbon road construction technical system based on a basalt product and a construction mode. The method comprises the following steps: (1) early-stage preparation work: roadbed excavation and material preparation; (2) paving plain soil, and spreading water, cement, basalt solid waste and an alkali-activated material; (3) mixing and curing a roadbed layer; (4) laying thin slurry layers; (5) pavement layer materials are laid, and a cement concrete pavement with basalt fiber reinforcements is formed; (6) installing a pavement intelligent temperature control system; and (7) maintaining the pavement layer. According to the green low-carbon road construction technical system based on the basalt product, the basalt solid waste is adopted as an improved soil roadbed material, the cement consumption and cost are saved, and the carbon emission in the road construction process is effectively reduced.

The utility model discloses a flame-retardant and aging-resistant artificial turf, which belongs to the field of flame-retardant and wear-resistant artificial turfs and comprises a turf component, the turf component comprises a first frame and a second frame, two sides of the first frame are fixedly connected with hair magic tapes, two sides of the second frame are fixedly connected with hook-and-loop fasteners, and the hook-and-loop fasteners are fixedly connected with the hook-and-loop fasteners. The first frame body and the second frame body are both internally provided with flame-retardant pads, the upper ends of the flame-retardant pads are connected with artificial grass sheets, the lower ends of the flame-retardant pads are connected with reinforcing pads, and the lower ends of the reinforcing pads are connected with bottom pads. Therefore, the use safety of the artificial turf is improved, the service life of the artificial turf is prolonged, meanwhile, the artificial turf can be quickly laid at any length, and the use convenience and universality of the artificial turf can be improved.

The invention discloses an anti-crack construction method for a concrete pavement. The anti-crack construction method comprises the steps that a high-pressure water gun with the pressure ranging from 15 MPa to 18 MPa is adopted to conduct scouring on the surface of a roadbed to form latticed grooves with the depth ranging from 3 mm to 5 mm; laying a double-layer isolating layer composed of a polyethylene film and polypropylene geotechnical cloth, and coating an organic silicon interface agent of 1-1.5 mm in the middle; erecting a three-dimensional steel reinforcement framework; during layered pouring, the thickness of lower-layer concrete is 60 + / -2% of the total thickness, inserting quincunx PVC exhaust pipes with the diameter of 25mm, and controlling the temperature difference between the upper-layer concrete and the lower-layer concrete to be less than or equal to 5 When the concrete strength reaches 5MPa-7MPa, the cutting depth of the shrinkage joint is 1 / 4-1 / 3 of the total thickness, and the length difference of the adjacent sections is less than or equal to 10%. The method can significantly improve the crack resistance of the pavement, and is suitable for concrete pavement projects such as highways and municipal roads.

The invention provides a self-adhesive pavement local disease repair blanket and a preparation process and application thereof, the repair blanket is of a rectangular sheet structure, and sequentially comprises an anti-wearing layer, a high-viscosity tough asphalt layer, a self-healing composite structure layer, an anti-crack reinforcing layer and a self-healing bonding layer from top to bottom. The self-healing composite structure layer is composed of a crack limiting induction film layer and a shape memory polyurethane strip. Through the collaborative design of introducing the anti-crack reinforcing layer and the high-viscosity and tough asphalt layer into the repairing blanket structure, the stress fluctuation transmitted by base cracks can be effectively buffered, and the stress concentration degree of the surface layer is reduced, so that the occurrence of reflection cracks is inhibited, and the structural integrity of a pavement repairing area is improved; a self-adhesive composite structure which can be used at normal temperature is adopted, traditional operation steps such as heating, mixing or sealing layer laying are not needed in the construction process, the construction process is simplified, and the maintenance time is shortened.

A surface structure to form an area of hard-standing and method of forming the same, comprising at least a first mesh and typically a ballast material, and possibly a second or further mesh layer, and a particulate body formed by a particulate material bound by a resin acting as an external surface for the surface structure. The mesh layers act to reinforce the relatively unitary structure, reducing damage to the particulate body that may otherwise be subject to crack propagation.

The invention relates to the technical field of road engineering, and discloses a light-weight long-service-life asphalt pavement composite layer and a construction method of a pavement structure, and the light-weight long-service-life asphalt pavement composite layer sequentially comprises a high-toughness anti-skid ultrathin wearing layer, an anti-rutting composite modified middle surface layer, a high-toughness porous anti-fatigue leveling layer and a high-viscosity asphalt synchronous gravel sealing layer from top to bottom; the thickness of the high-toughness anti-skid ultrathin wearing layer is 1.5-3.0 cm, and the structural depth of the surface of the high-toughness anti-skid ultrathin wearing layer is not less than 0.8 mm; the thickness of the anti-rutting composite modified middle surface layer is 2.5 to 4.5 cm; the thickness of the high-toughness porous anti-fatigue leveling layer is 3.0 to 5.0 cm; and the thickness of the high-viscosity asphalt synchronous gravel sealing layer is 1.0 cm. According to the scheme, by increasing the structure depth of the surface of the high-toughness anti-skid ultrathin wearing layer, the service life equivalent to or even longer than that of a conventional asphalt pavement is maintained while the thickness is greatly reduced, and the problem that the overall service life of the conventional ultrathin asphalt pavement is short due to insufficient anti-skid performance is solved.

The invention discloses a multi-stage gradient reinforced composite filler for a high-filling embankment and a construction process of the multi-stage gradient reinforced composite filler, and belongs to the technical field of embankment fillers, and in the multi-stage gradient reinforced composite filler, the overall structure stability is remarkably improved through layered material combination. The self-locking structure of the three-level aggregate enhances the non-deformability of the filler, the large-particle-size broken stones form skeleton support, the modified fly ash fills pores to improve the compactness, and the machine-made sand surface treatment technology enhances the cohesive force among particles. The cementitious material realizes synergistic development of early strength and later strength, rapid hardening of the sulphoaluminate cement and continuous hydration of the superfine slag powder cooperate with each other, and the microstructure is optimized in cooperation with the nano material. The gradient reinforcement system exerts characteristics of different materials in a layered mode, the deep steel-plastic belt anchors the foundation to prevent slippage, the middle-layer fiber grid disperses stress, the surface-layer non-woven fabric inhibits shallow-layer cracking, three-dimensional protection from inside to outside is formed, microcracks are continuously repaired through the microbial agent, shrinkage deformation is compensated through the expanding agent, and the long-term service performance is comprehensively guaranteed.

The present invention discloses a crack-resistant and durable long-life asphalt pavement structure and its construction method, which relates to the technical field of asphalt pavement construction. It includes an asphalt surface layer, a reinforcement mesh, positioning piles, and fixing rings. A geotextile stress absorption layer is provided under the asphalt surface layer, and a prime coat is provided under the geotextile stress absorption layer. The prime coat is SBS modified emulsified asphalt. By using polypropylene geotextiles to reinforce the pavement structure and form a composite structure with road materials, it has strong interfacial effects and reinforcement functions, forms a good whole with the surface layer and the base layer, effectively prevents or delays the cracking of asphalt pavements, improves the service life of the asphalt surface layer. After the polypropylene geotextiles are combined with the prime coat oil, it has excellent waterproof effects, prevents surface water from seeping into the pavement structure and eroding the roadbed, and extends the service life of the pavement.

A segment of roadway including a body and a strain sensor array embedded in the body. The strain sensor array includes vehicle-strain sensors configured to detect strain on the body resulting from vehicles traveling across the top surface. The strain sensor array includes an optical fiber cable comprising the plurality of vehicle-strain sensors, and the optical fiber cable is embedded in a configuration that includes a bend with a bend radius of at least twenty millimeters (20 mm). Each of the vehicle-strain sensors is separated from the bend by a length along the optical fiber cable of at least one centimeter (1 cm), and each of the vehicle-strain sensors is separated from each other of the vehicle-strain sensors by a length along the optical fiber cable of at least one centimeter (1 cm).

The invention discloses a geogrid and EICP synergistically reinforced soil embankment structure and a construction method, and relates to the technical field of soil embankment structures. Comprising a pavement base layer, an embankment bearing layer and a natural soil foundation layer, and the natural soil foundation layer is used as a soil embankment structure support and is arranged at the bottommost layer; the pavement base layer is used for bearing an upper driving load and uniformly transferring the upper driving load to the embankment bearing layer below; and the embankment bearing layer is used for bearing the upper load transmitted by the pavement base layer. The engineering performance is improved through the multi-layer synergistic effect, the core reinforcing layer is of an innovative space grid structure and is composed of a prefabricated geogrid, a grid support arranged in the inclined direction and a rigid stress plate frame, a three-dimensional force transmission network is formed, the limitation of a traditional reinforcing method is broken through, and the engineering performance is improved. In addition, the grating support is arranged at a specific angle, the structural rigidity is guaranteed, and the stress concentration phenomenon is avoided.

A multi-layer integral geogrid with one or more porous layers has a plurality of oriented multi-layer strands interconnected by partially oriented multi-layer joints having a series of openings. A multi-layer integral geogrid with one or more porous layers is manufactured from co-extruded or laminated multi-layer polymer starting sheets. The integral geogrid has a multi-layer structure, at least one outer layer of which has a porous structure. The porous layer structure allows the multi-layer integral geogrid to have improved layer vertical compressibility under load, resulting in enhanced material properties that provide performance benefits for the use of the multi-layer integral geogrid to stabilize and consolidate soils, aggregates or other particulate materials.

The invention relates to an embankment structure based on perforated concrete and a construction method. The structure comprises a concrete bottom plate, a concrete top plate, a pavement layer and the perforated concrete, the perforated concrete is arranged between the concrete bottom plate and the concrete top plate, and the pavement layer is arranged on the concrete top plate; a plurality of holes are formed in the perforated concrete, a distance is reserved between the outer contours of every two adjacent holes, and the holes are formed through embedded pipelines. Compared with the prior art, the method has the advantages of stable and reliable structure, convenience in construction and the like.

A segment of roadway includes a body having a top surface and a strain sensor array comprising one or more optical fiber cables embedded in the body. The strain sensor array includes an integrity sensor and vehicle-strain sensors. The vehicle-strain sensors are configured to detect strain on the body resulting from vehicles traveling across the top surface. Each of the vehicle-strain sensors has at least one of a spatial resolution and a length extending substantially parallel to a direction of travel of equal to or less than fifty centimeters (50 cm), and the integrity sensor has at least one of a spatial resolution and a length of greater than fifty centimeters (50 cm).

A paving process for an asphalt overlay is characterized by comprising the following steps: step 1, forming a plurality of parallel grooves on the surface of a road base; step 2, filling the grooves with foamed asphalt; step 3, laying an intermediate reinforcing asphalt layer; and step 4, laying a surface strengthening layer.

This invention relates to a pavement structure and its installation method. The pavement structure includes a main body, which comprises a base layer, a concrete layer, and a first bonding layer. The first bonding layer is disposed between the base layer and the concrete layer to bond the base layer and the concrete layer. A storage tank is fixedly disposed on the side of the main body. The storage tank is used to store an aqueous solution of light stabilizer, and the top of the storage tank is provided with a feeding port, in which a plug is detachably installed. The main body also includes a hydrophilic polymer fiber mesh, which is laid on the concrete layer and extends into the storage tank from the side. The polymer fiber mesh can adsorb and disperse the aqueous solution of light stabilizer on it. The surface tension of the fibers promotes the flow of liquid, and the aqueous solution of light stabilizer in the storage tank is uniformly absorbed and dispersed throughout the pavement structure, extending the UV resistance of the pavement structure and ensuring the full service life performance of the concrete.

The utility model relates to the technical field of old cement road transformation, and discloses a concrete white-to-black pavement structure which comprises a cement pavement layer, a plurality of groups of transverse cutting grooves and longitudinal cutting grooves which are communicated in a staggered mode are formed in the upper side of the cement pavement layer, transverse connecting plates are installed at the bottoms of the transverse cutting grooves, and longitudinal connecting plates are installed at the bottoms of the longitudinal cutting grooves. A plurality of first asphalt layer connectors are installed on the upper side of the transverse connecting plate, second asphalt layer connectors are installed on the upper side of the longitudinal connecting plate, and connecting steel bars penetrate through the multiple second asphalt layer connectors on the same straight line. Compared with the prior art, the concrete pavement structure has the advantages that a plurality of groups of transverse cutting grooves and longitudinal cutting grooves are cut on the upper side, asphalt is poured into the transverse cutting grooves and the longitudinal cutting grooves, and the connecting strength between a concrete pavement layer and an asphalt layer is enhanced through the asphalt layer connectors I and the asphalt layer connectors II in the transverse cutting grooves and the longitudinal cutting grooves; and the phenomena of interlayer gaps and asphalt surface layer falling are prevented.

The present invention discloses a method for preventing cracking of cement concrete pavement by adding asphalt concrete, comprising the following steps: construction of pavement base layer; adding measures to prevent uneven settlement of the base layer; construction of cement concrete pavement; cutting of cement concrete pavement; grouting of cement concrete pavement; construction of curbstones; paving of reinforced asphalt concrete pavement; cutting of asphalt concrete pavement; grouting of asphalt concrete pavement. Compared with the prior art, the method of the present invention is not only highly operable, convenient and reliable, but also effectively reduces cracking of the pavement due to various reasons. The permanent and temporary combined roads at the construction site save a series of costs such as demolition and reconstruction, and the maintenance cost of the pavement in the later stage is also greatly reduced. Since the existing pavement is used as the base layer of the new pavement, the construction period is shortened. Compared with cement concrete pavement, the dust suppression and noise reduction functions of asphalt pavement are significantly improved, which has a better effect on protecting the surrounding environment.

The utility model discloses a high-strength hardened ground structure using waste machine-made sand, which comprises a concrete water-stable layer and a wear-resistant concrete layer, the wear-resistant concrete layer is poured on the top of the concrete water-stable layer, the high-strength hardened ground structure further comprises a reinforcing module, the reinforcing module is embedded in the concrete water-stable layer, and the wear-resistant concrete layer is poured on the top of the concrete water-stable layer. The reinforcing module comprises a reinforcement cage frame, a plurality of reinforcing ribs and a plurality of reinforcing supporting mechanisms. The reinforcing ribs and the reinforcing supporting mechanisms are evenly arranged at the bottom of the reinforcement cage frame. According to the high-strength hardened ground structure using the waste machine-made sand, the wear resistance of the concrete water-stable layer is effectively enhanced at the top of the concrete water-stable layer, meanwhile, the reinforcing modules are arranged in the concrete water-stable layer, the reinforcing modules can pull the concrete water-stable layer in the concrete water-stable layer, and the wear resistance of the concrete water-stable layer is improved. And therefore, the structural strength of the concrete water-stable layer is effectively enhanced, the situations that the concrete water-stable layer made of the waste machine-made sand cracks and the like are effectively reduced, and the use requirements of users are met.

The invention discloses a ground hardening system for the slope section of a return air lane, which consists of a plurality of hardening units, each of which is connected to each other in sequence and arranged along the direction of the lane slope, the lower end and lower side of each hardening unit are fixed on the slope ground, and the upper end and upper side thereof are used for pedestrians to pass through, so as to avoid slipping when walking on the slope, thereby causing accidental injury to pedestrians; the inclination angle of the slope section of the return air lane is 5-25 degrees, and each hardening unit comprises: a front hardening rod, a rear hardening rod, a plurality of hardening cross rods, which are perpendicular to the direction of the front hardening rod and the rear hardening rod, and the two ends of the hardening units are respectively welded to the front hardening rod and the rear hardening rod, and a plurality of prefabricated hardening blocks are respectively located in each accommodating cavity, so as to harden the bottom of the lane slope and fill the accommodating cavity so that pedestrians can walk back and forth thereon; the invention has low workload, low labor consumption, fast construction progress, and the components are prefabricated, which can be prefabricated on the ground in advance, thereby improving the construction progress.

The invention belongs to the technical field of steel bridge pavement, and particularly discloses a high-viscosity asphalt double-layer SMA pavement layer structure and a construction technology thereof. The high-viscosity asphalt double-layer SMA pavement layer structure comprises an upper pavement layer, a waterproof bonding layer and a lower pavement layer, the upper pavement layer is laid on the lower pavement layer, the upper pavement layer comprises fine aggregate, limestone powder, modified asphalt, basalt fibers and a Wenn glue mixture, the thickness of the upper pavement layer is 35-40 mm, and the thickness of the waterproof bonding layer is 10-20 mm. The waterproof bonding layer comprises modified asphalt, epoxy resin, a silane coupling agent, a curing agent, a curing accelerator, butadiene styrene rubber, a silane coupling agent and talcum powder, the thickness of the waterproof bonding layer is 0.5-1 mm, and the lower pavement layer comprises coarse aggregate, modified asphalt, acrylonitrile-butadiene-styrene copolymer, porous ceramic particles, rubber particles, calcium stearate and waterborne polyurethane. And the thickness of the lower paving layer is 10-15mm. Various raw materials are mixed, so that the strength and durability of the pavement layer structure are improved, and the service life of the pavement is prolonged.

The invention relates to the technical field of road engineering, in particular to a reinforced concrete stiffening dense rib pile supporting post-tensioning method prestressed road and a construction method. According to the overall technical scheme, dense rib pile multilateral wing beam pile head integrated design is adopted, pile sinking is conducted through a steel casing guide soil squeezing static pressure method, longitudinal and transverse crossed flat and hidden beams cooperatively bear, butt joint steel bars are connected through a full grouting sleeve grouting method, post-tensioning method unbonded prestressed tendon perforation laying is conducted, and double-I-beam pedestal bearing prestress applying and anchoring are conducted; according to the principle of reinforcing the bearing effect of road structure group piles through reinforcing meshes, the rapid mounting and dismounting process of aluminum molds and comprehensive pavement of asphalt concrete surface layers, the bearing capacity of the road structure is improved, the stability and durability are enhanced, meanwhile, the construction efficiency is optimized, and the follow-up maintenance cost is reduced.

The utility model discloses an asphalt pavement anti-sliding low-noise structure which comprises a rock layer, a supporting pile is fixedly poured in the rock layer, a concrete layer is fixedly poured at the upper end of the supporting pile, and an anti-sliding groove is formed in the upper end of the concrete layer. The installation opening is formed in the asphalt pavement, rainwater can be conveniently and rapidly discharged downwards along the drainage pipe, garbage impurities can be filtered through the design of the filter screen and prevented from entering the drainage pipe, the flatness of the asphalt pavement can be guaranteed through the design of the supporting block, and passersby are prevented from being stumbled by the installation opening; the arc-shaped pavement is arranged at the upper end of the asphalt pavement, rainwater can be conveniently drained to the two sides, rainwater accumulation is prevented from influencing driving, the design of the drainage ports can assist in drainage and improve the drainage efficiency, and the design of the steel bar frame and the square frame can reinforce the concrete layer and the asphalt pavement structure and improve the integrity of the road.

The utility model relates to the technical field of pavement structures, in particular to a composite pavement structure. Comprising a subbase layer, a construction waste recycled material layer, a strength reinforcing layer, a drainage ditch, a fiber concrete layer, a connecting layer and an asphalt macadam mixture layer. The subbase layer, the construction waste recycled material layer, the strength reinforcing layer, the fiber concrete layer, the connecting layer and the asphalt macadam mixture layer are sequentially arranged from bottom to top, the section of the strength reinforcing layer is of a structure with the high middle and the two low sides, and the drainage ditches are formed in the upper surfaces of the lowest points of the two sides of the strength reinforcing layer. The problem that an existing pavement is prone to cracking is solved, meanwhile, the smoothness of the pavement is guaranteed, even if the aggregate is exposed, vehicles passing through the top layer cannot be damaged, and the safety attribute of the pavement is improved. The main reason of the utility model is the composite pavement structure.

Structural cell formwork, cells and matrices using the structural cells for positioning below a hardscape that define a void space therein, the structural cell formwork, cells, matrices using the cells and methods of assembly allowing in one embodiment the introduction of a structural fluid such as concrete to provide an alternative structural cell and matrix product.