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203results about "Paving reinforcements" patented technology

Multi-stage gradient reinforced composite filler for high-filled embankment and construction process of multi-stage gradient reinforced composite filler

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.
Owner:CHINA CONSTRUCTION EIGHTH BUREAU (INNER MONGOLIA) CONSTRUCTION CO LTD

Geogrid and EICP synergistically reinforced soil embankment structure and construction method

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.
Owner:HUNAN INSTITUTE OF ENGINEERING

A road pavement structure and its paving method

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.
Owner:NINGBO ROABY TECH INDAL GROUP

High-viscosity asphalt double-layer SMA pavement layer structure and construction process thereof

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.
Owner:SHANDONG SHITONG HIGHWAY CONSTR CO LTD

Reinforced concrete stiffening rib pile supporting post-tensioning method pre-stressed road and construction method

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.
Owner:IANGSU COLLEGE OF ENG & TECH

Structural cell formworks and matrices

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.
Owner:STRATA INNOVATIONS PTY

A sponge-type road paving structure

The application relates to the technical field of municipal construction, and discloses a sponge type road paving structure which comprises a water permeable layer, a filter layer arranged below the water permeable layer, a drainage layer arranged below the filter layer, a base layer arranged below the drainage layer, a water storage groove arranged on the base layer, a pipeline arranged in the water storage groove, an arched pressure bearing plate arranged on the base layer, the pressure bearing plate being arranged above the water storage groove, the pressure bearing plate being in contact with the drainage layer, a support structure arranged on the bottom wall of the water storage groove and used for supporting the pressure bearing plate, and a drainage pipe arranged in the water storage groove, so that the service life of the road is prolonged.
Owner:WENZHOU HONGTAI CONSTR

Full-prefabricated assembly type shortcut capable of being repeatedly used and construction method of full-prefabricated assembly type shortcut

The invention provides a reusable full-prefabricated assembly type shortcut which comprises a plate assembly and a sleeper beam assembly arranged below the plate assembly, the plate assembly comprises a left side edge plate, a right side edge plate and a middle plate, and a road middle plate is arranged between the left side edge plate and the right side edge plate. The sleeper beam assembly comprises edge sleeper beams on the two sides and at least one middle sleeper beam arranged in the middle, and embedded steel bars are arranged on the inner peripheries of the edge sleeper beams and the middle sleeper beams. Steel pipe sleeves are arranged on the inner peripheries of the front sides and the rear sides of the left side edge plate, the road middle plate and the right side edge plate, the number of the steel pipe sleeves is consistent with that of the embedded steel bars, the steel pipe sleeves are inserted in one-to-one correspondence, and splicing seams of the edge sleeper beams and the middle sleeper beams and splicing seams of the road middle plate, the left side edge plate and the right side edge plate are transversely staggered. The prefabricated assembly technology is adopted, the number of plate standard parts is small, transportation and installation are convenient, recycling can be achieved, and the method is widely applied to various temporary roads or construction roads.
Owner:WUXI MUNICIPAL DESIGN INST

Combined type plastic track buffer structure

The utility model relates to the field of plastic runways, and discloses a combined type plastic runway buffer structure which comprises a supporting assembly and a positioning assembly, the positioning assembly is installed at the bottom of the supporting assembly, the supporting assembly comprises a bottom plate and a waterproof film, the top of the waterproof film is coated with a bonding layer, and the bonding layer is arranged on the bottom plate. Sealing sleeves are connected to the positions, close to the two sides, between the bottom plate and the waterproof film, the top of the bottom plate is filled with an elastic plastic layer, the top of the elastic plastic layer is filled with a rubber particle layer, and a plurality of rubber columns are installed in the elastic plastic layer and the rubber particle layer in a penetrating mode. The rubber columns are sealed, so that the overall buffering is improved, external moisture is prevented from entering, and the expansion can be adapted in the buffering process; and through the grating plate and the leveling layer, the adhesive force of the grating plate is increased, overall supporting and fixing are improved, and separation caused by sliding between the grating plate and the ground is prevented.
Owner:SHANDONG DONGHAI GRP CO LTD

Semi-flexible pavement structure

The utility model discloses a semi-flexible pavement structure which comprises a surface layer, a foundation is arranged below the surface layer, a ground pile is installed at the top of the foundation, a cushion layer is arranged above the ground pile, a reinforcing structure is installed in the cushion layer, and the reinforcing structure comprises reinforcing ribs arranged in the cushion layer, and a reinforcing layer arranged in the cushion layer, and the connecting plate is fixedly connected to the bottom of the reinforcing rib. The utility model relates to the technical field of pavement structures, through the cooperation of the reinforcing rib, the connecting plate and the supporting column, the supporting column and the fixing frame are used for supporting the reinforcing rib and the connecting plate, the reinforcing rib and the connecting plate are fixed at the top of a ground pile, the pavement is more convenient to lay, and when the pavement is influenced by the environment temperature, the pavement is not damaged. And the stability of the pavement is not reduced.
Owner:ZHEJIANG CHANGAN DUNJI NEW MATERIAL CO LTD

Water-permeable environment-friendly brick

The utility model relates to the technical field of environment-friendly bricks, and discloses a water-permeable environment-friendly brick which comprises a brick body, an upper surface layer is fixedly connected to the top of the brick body, a lower bottom layer is fixedly connected to the bottom of the brick body, a reinforcing device is fixedly connected to the interior of the brick body, and a drainage device is fixedly connected to the interior of the brick body. A fixing rod is fixedly connected to the interior of the brick body, a first reinforcing rib is fixedly connected to the side face of the fixing rod, and a second reinforcing rib is fixedly connected to the side face of the first reinforcing rib. The silicon dioxide coating on the upper surface layer increases the hardness and anti-pollution capacity of the surface of the brick body, the design of the clamping grooves and the clamping blocks on the lower bottom layer facilitates splicing and fixing of the water-permeable environment-friendly bricks, impurities are effectively prevented from entering the brick body through the arrangement of the water-permeable layer and the filtering layer, and smoothness of water flow is guaranteed.
Owner:SHENZHEN HUILI DEBANG ENVIRONMENTAL PROTECTION TECH CO LTD

A plastic track with a soft surface layer fixed by rivet nails

The application is a riveting nail fixed network soft surface layer plastic track, which comprises a plastic mixture layer formed by uniformly mixing plastic mixture, a shaped buffer layer is arranged in the plastic mixture layer, the shaped buffer layer and the plastic mixture in the middle and upper and lower layers are mutually glued into a sheet-shaped composite layer, and the shaped buffer layer is anchored on the ground layer together with the whole composite layer through an anchoring part. The application retains the physical and mechanical properties of the original material, improves the tensile and impact strength, and improves the durability of bending and resilience, avoids the fracture and fragmentation of the soft surface layer plastic material, rivets the grid net with plastic mixture on the ground layer by using the plastic riveting nail, avoids the curling and angle problems caused by degumming, greatly prolongs the service life of the soft plastic material, expands the application, and facilitates the development of new products in various application scenarios.
Owner:林光善

Silicon PU combination court

This utility model relates to the field of silicone PU sports court technology, specifically to a silicone PU composite sports court. Addressing the technical shortcomings of existing rigid reinforcement schemes that hinder material synergistic deformation, induce stress cracks, and create water seepage channels, this utility model employs a structural scheme where a foundation trench is created at the edge of the concrete base, with an array of barbs pre-set on the four walls of the trench. During the pouring of the silicone PU elastic layer, the flow wraps around the barbs, forming a three-dimensional interlocking body. Combined with the molecular-level penetration bonding layer at the bottom of the trench, a physical-chemical dual anchoring system is constructed. The spatial constraint effect of the foundation trench enhances the overall structural integrity, while maintaining the coordination of expansion and contraction during synergistic deformation. This design disperses peeling stress through mechanical interlocking, blocks water seepage paths, and eliminates stress abrupt changes caused by metal components, achieving a simultaneous improvement in edge peel strength and deformation adaptability, ensuring the long-term functional integrity of the sports court boundary.
Owner:GUANGZHOU LIKE SPORTS CO LTD

Semi-rigid base pavement maintenance structure

This invention discloses a semi-rigid base pavement maintenance structure, relating to the field of pavement maintenance technology. It includes a pavement asphalt concrete layer, a bridge deck asphalt concrete layer, and a cast-in-place subgrade located beneath both layers. The cast-in-place subgrade has an embedded frame inside. Speed ​​reduction pads are provided at the connection points of the pavement and bridge deck asphalt concrete layers. The structure also includes: a lever mechanism installed inside the embedded frame; and a first elastic support mechanism connected to the speed reduction pads. The semi-rigid base pavement maintenance structure provided by this invention can repair cracks from within the road surface and has a strong interconnected technical effect.
Owner:中电建路桥集团有限公司

Pavement structure suitable for flood detention area

The pavement structure suitable for the flood detention area comprises a building aggregate roadbed, a gravel leveling layer, a graded gravel hardcore, a pervious concrete base layer, an isolating layer and an assembly type prestressed concrete pavement slab layer which are sequentially arranged from bottom to top, the structure is characterized in that the building aggregate roadbed, the broken stone leveling layer, the graded broken stone hardcore and the pervious concrete base layer are all made of water-resistant materials; the fabricated prestressed concrete panel layer is formed by paving continuously paved pre-tensioned pavement panels, and the adjacent pre-tensioned pavement panels are connected through self-stress seams. According to the pavement structure suitable for the flood detention area, the waterproof material is adopted, the mechanical property of each layer is basically not changed when the pavement structure is immersed in water, the strength is not reduced, water in each layer of a road can quickly flow out after the water level is reduced, and the road is not influenced in the later period; and the flood cannot pass through the crack to corrode the steel strand, so that the whole road is large in bearing capacity and high in durability.
Owner:SHAN DONG ZHI XING KAN CHA SHE JI YUAN YOU XIAN GONG SI +1

A rapid water-permeable brick pavement structure and a construction method thereof

The application discloses a kind of quick water-permeable brick pavement paving structures and its construction method, including foundation soil and water-permeable brick body, bottom protection pipe is embedded in the foundation soil inside.The application adopts bottom protection pipe and top protection pipe, when it rains, rainwater permeates through water-permeable brick body, gradually infiltrates, rainwater can quickly pass through top protection pipe and the outer through hole and inner through hole opened on the surface of inner pipe and enter the filter cotton in the inner pipe, and quickly infiltrate to the drain pipe along with gravity, so as to quickly drain away, thereby improve the drainage speed of water-permeable pavement, improve the water permeability of water-permeable pavement, and top protection pipe and bottom protection pipe are made of stainless steel pipe, not only provide protection to inner pipe and drain pipe during construction, avoid crushing inner pipe and drain pipe during construction, but also form a skeleton support to pavement structure at the same time, improve integrity, thereby improve the overall strength of pavement, improve the overall quality of pavement.
Owner:CHINA MCC17 GRP CO LTD

Geocell composite pavement structure and rapid construction method

The invention discloses an earthwork standard room composite pavement structure and a rapid construction method, and relates to the technical field of mine laneway engineering construction, the top of a compacted roadbed is provided with an earthwork standard room reinforced solid waste base layer, the top of the earthwork standard room reinforced solid waste base layer is provided with an isolation layer, and the top of the isolation layer is provided with a thin fiber reinforced concrete surface layer; a pavement main body material (filling materials in cells) directly adopts underground tunneling waste rocks, so that the two-way transportation cost of lifting the part of the material out of a well and then transporting concrete is saved, meanwhile, the thickness of a concrete surface layer can be reduced by 40-50%, and the underground transportation amount of commercial building materials such as cement and gravel is directly and greatly reduced; a raft effect is formed by constraint of the earthwork standard room on gravel, the foundation bearing capacity is high, differential settlement is small, and the fiber reinforced thin-layer concrete is excellent in bending resistance, impact resistance and fatigue resistance, and is particularly suitable for heavy load and dynamic load impact of underground dump trucks and carry-scrapers (such as equipment with the load capacity of 20-30 tons).
Owner:HUNAN LIANSHAO CONSTR ENG GRP

Curing material based on fluorgypsum and application of curing material in roads

The invention relates to the technical field of fluorgypsum curing materials, and discloses a fluorgypsum-based curing material and application thereof in roads, the fluorgypsum-based curing material comprises the following components by weight: 90-100 parts of fluorgypsum, 10-15 parts of cement, 20-40 parts of a gradient activator, 3-8 parts of a fiber reinforced component, 0.5-1.5 parts of a water reducer, 0.1-0.15 part of an antifoaming agent, and 20-30 parts of water; the gradient exciting agent is prepared from sulphoaluminate clinker, activated lithium slag powder and a compound of nano SiO and metakaolin; the fiber-reinforced component comprises calcium sulfate whiskers, polyvinyl alcohol fibers grafted with glycidyl methacrylate on the surfaces, and mixed bundles of carbon fibers and glass fibers. The fluorgypsum curing material provided by the invention has good compressive strength and water resistance.
Owner:FUZHOU CHUANGXIAN ENG MATERIAL CO LTD +1

Modularized box type beam plate structure unbonded prestress assembly type road and construction method

The invention relates to the technical field of fabricated roads, in particular to a modular box beam and slab structure unbonded prestress fabricated road and a construction method. The method comprises the following steps of: constructing a longitudinal and transverse lattice beam net by positioning pile distribution road line type and elevation, connecting longitudinal and transverse prefabricated component angle steel, crosswise arranging unbonded prestressed tendons, designing inverted laminated slab multi-situation nodes, secondarily grouting low-shrinkage micro-expansion high-strength grouting materials, and reinforcing structural integrity and settling adjustment by a cast-in-place concrete conversion section. According to the technical scheme, the multi-lattice modular box-type beam and slab bearing system is finally formed. The modular box beam and slab structure fabricated road technical system is more suitable for the conditions that the original bearing capacity of a roadbed soil layer is poor, the roadbed soil layer is seriously eroded by underground water, the geological environment is severe and the like, and the high efficiency of road construction, the integrity of structural bearing and the effectiveness of resisting differential settlement of a roadbed can be better achieved.
Owner:IANGSU COLLEGE OF ENG & TECH

Concrete pavement structure for sponge city construction and construction method thereof

The invention belongs to the technical field of sponge city construction, and discloses a concrete pavement structure for sponge city construction and a construction method thereof.The concrete pavement structure comprises a bottom concrete layer, a middle concrete layer and a surface concrete layer which are sequentially arranged from bottom to top; the bottom concrete layer is formed by construction of recycled aggregate pervious concrete; the middle concrete layer is formed by constructing recycled aggregate pervious concrete doped with zeolite; the surface concrete layer is formed by constructing recycled aggregate pervious concrete which is reinforced by mixing polyvinyl alcohol fibers and basalt fibers; the gradient aperture layout of pores in the concrete pavement structure with small top and large bottom is realized, the mechanical property of the surface layer is effectively improved, meanwhile, the overall water permeability can be effectively ensured, and the water permeability and the mechanical strength are considered; meanwhile, the pore blocking speed can be slowed down, and the service life of the concrete pavement structure is prolonged.
Owner:CHINA RAILWAY SEVENTH BUREAU GRP XIAN RAILWAY ENG CO LTD

Green artificial turf

The utility model discloses a green artificial turf which comprises a buffer layer, a metal top ring, a metal bottom ring, a gravel layer, a compacted soil layer and a turf layer, a plurality of drain holes are formed in the buffer layer, the metal top ring is arranged at the top end of the buffer layer, a clamping groove is formed in the top end of the metal top ring, non-woven fabric is arranged in the clamping groove, and the gravel layer is arranged in the non-woven fabric. The metal bottom ring is arranged at the bottom of the buffer layer, the gravel layer is arranged at the bottom of the buffer layer, the compacted soil layer is arranged at the bottom of the gravel layer, and the turf layer is arranged at the top end of the buffer layer. Through the arrangement of the metal top ring, under the condition that the use of the buffer layer is not affected, leaves, dust, soil, plastic particles and other substances are prevented from blocking the drainage holes, the abrasion resistance of the tops of the drainage holes is improved, and the problems that the drainage holes become larger or deform due to friction, and consequently impurities are accumulated more easily and blocking is caused are solved; abrasion resistance of the bottom of the buffer layer can be improved, and deformation of the bottom of the drain hole is avoided.
Owner:JIANGSU SETH ARTIFICIAL TURF CO LTD

New and old roadbed transition buffer structure

The invention relates to the technical field of roadbed transition, and discloses a new and old roadbed transition buffer structure which comprises an old road and a geogrid arranged below the old road, and further comprises two connecting parts which are both mounted on the old road; the number of the fixing parts is two, and the two fixing parts are both arranged on the old road; the number of the blocking parts is two, and the two blocking parts are both installed on the old road; the connecting part comprises a movable assembly, and the movable assembly is installed on an old road. By arranging the connecting part, the problems that in the using process of an existing buffer structure, stable and reliable connection between the geogrid and an old roadbed is difficult to form, and when a new roadbed settles and generates traction stress, an inserting rod is prone to loosening and disengaging or lateral deviation, and consequently the geogrid loses a stress fulcrum, displaces, loosens and even locally wrinkles are solved.
Owner:QINGHAI HUANGYUAN COUNTY GONGLU ENG CONSTR CO

High-performance reinforcement splicing method for semi-rigid base pavement based on drilling and grouting of rebars

The application discloses a semi-rigid base pavement high-performance reinforcing splicing method based on drilling and grouting and steel bar planting, and belongs to the technical field of pavement reinforcing splicing. The application comprises designing base broken line splicing size and old road base drilling and grouting and steel bar planting scheme, wherein drilling positions and intervals are determined according to target reinforcing effect; transverse drilling is carried out from the side of the excavated old road base splicing step, after drilling is completed, a grouting pipe is inserted into the hole and the hole is sealed, grouting reinforcing is carried out, and the local modulus of the old base is improved to be equivalent to that of the new road base; after grouting is completed, steel bars are inserted to carry out steel bar planting operation, half of the steel bars are planted into the hole and half of the steel bars are exposed outside; new road cement stabilized macadam base paving is carried out, the new base material naturally covers and holds the exposed part of the steel bars, after curing, splicing and construction of subsequent layer positions are continuously completed, the application can effectively and low-disturbance reinforce the old road base splicing position, and can realize high-performance splicing of effective anchoring and integral connection of the new and old bases.
Owner:TONGJI UNIV +1

Anti-cracking asphalt pavement

The utility model relates to the technical field of road construction, and discloses an anti-cracking asphalt pavement which comprises a pavement body, a plurality of water seepage holes are formed in the inner wall of the pavement body, a seepage film is fixedly connected to the bottom of the pavement body, a roadbed is fixedly connected to the bottom of the seepage film, and a plurality of water collecting grooves are formed in the inner wall of the roadbed. The inner wall of the water collecting tank is fixedly connected with a first inclined block, a drainage hole is formed in the middle of the inner wall of the water collecting tank, the bottom of the roadbed is fixedly connected with a gutter, the inner wall of the gutter is fixedly connected with a second inclined block, and the inner wall of the pavement is fixedly connected with an anti-crack structure. According to the utility model, liquid permeated in the road surface is guided into the water collecting tank through the water seepage holes, and then the liquid is gathered through the first inclined blocks and flows into the water guide tank through the drainage holes, so that the purpose of preventing the roadbed from cracking caused by water seepage of the road surface is achieved, the service life is prolonged, and the application range is expanded.
Owner:ZHEJIANG XIANGHONG ECOLOGICAL CONSTRUCTION CO LTD

A subgrade structure of a highway crossing a goaf and a construction method thereof

The application belongs to the technical field of road construction, and particularly relates to a roadbed structure of an expressway crossing a mined-out area and a construction method thereof. The roadbed structure comprises a first waterproof layer, a roadbed and a stable soil layer. The roadbed comprises a concrete bottom plate, a concrete side plate, a partition plate, a beam and a geocell. The partition plate is arranged in an area surrounded by the concrete bottom plate and the concrete side plate, and the first filler is arranged between the partition plates or between the partition plate and the concrete side plate. The beam is arranged above the partition plate and / or the concrete side plate, and the second filler is filled around and above the beam. The geocell is arranged above the second filler inside an area surrounded by the concrete side plate and the concrete bottom plate, and the third filler is filled in the geocell. The roadbed structure can effectively solve the local pressure concentration and uneven settlement caused by the underground cavity in the mined-out area, and has stronger adaptability in bearing capacity and stability.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1

Road crack prevention and treatment process and pavement

The invention discloses a road crack prevention process and a pavement and belongs to the technical field of road construction. The road crack prevention and treatment process comprises the following steps: S1, releasing shrinkage stress of a cement stabilized macadam base layer before paving an asphalt surface layer; s2, forming a stress absorption layer on the surface of the cement stabilized macadam base with the shrinkage stress released; and S3, an asphalt surface layer is laid. According to the crack prevention and treatment process, passive coping is changed into active guiding, controllable management of cracks is achieved, the core idea of the whole process is active prevention, intervention is conducted before cracks are generated, before reflection occurs and before diseases are deteriorated, the problems are eliminated in the bud state, and the traditional passive situation of'repairing after damage 'is changed.
Owner:ZCCC INT ENG CO LTD +1

Highway roadbed bearing structure

The utility model relates to the technical field of highways, and discloses a highway subgrade bearing structure which comprises a soil base layer, a stone base layer and an asphalt surface layer, the stone base layer is arranged on the upper surface of the soil base layer, and the asphalt surface layer is arranged on the upper surface of the stone base layer; the soil base layer comprises a stable soil layer, a limestone layer and a cement layer, the limestone layer is arranged on the upper surface of the stable soil layer, and the cement layer is arranged on the upper surface of the limestone layer; the stone base layer comprises a cement macadam layer and a cement gravel layer, and the cement gravel layer is arranged on the upper surface of the cement macadam layer; the asphalt surface layer comprises a lower surface layer, a middle surface layer and an upper surface layer, the lower surface layer, the middle surface layer and the upper surface layer are sequentially laid from bottom to top, the lower surface layer adopts a coarse grain type modified asphalt layer, the middle surface layer adopts a medium grain type modified asphalt layer, and the upper surface layer adopts a fine grain type modified asphalt layer. According to the utility model, the soil, the stone and the asphalt material are combined, so that the density and the structural strength of the roadbed are improved, the bearing capacity of the roadbed is improved, and the service life of a road is prolonged.
Owner:SHANGLUO ROAD ENG CO

Epoxy colored sand floor with decorative layer

The utility model provides an epoxy colored sand terrace with a decorative layer, which comprises a base layer, a primer layer, a mixing layer, a waterproof coating film, a colored sand layer and a reinforcing layer which are arranged from bottom to top, steel bar vortexes arranged in a matrix are arranged in the mixing layer, and steel bar rings arranged in a matrix are arranged in the colored sand layer. According to the utility model, the steel bar vortexes arranged in the matrix are arranged in the mixing layer, the steel bar vortexes can assist an operator in uniformly laying lime powder and fine sand particles, that is, the steel bar vortexes divide the upper surface of the primer layer into areas isolated in the matrix, and the areas consist of two areas inside and outside the steel bar vortexes, so that the lime powder and the fine sand particles can be uniformly paved. An operator can conveniently and uniformly lay lime powder and fine sand particles in the area, and the problem that the floor collapses in the later period due to the fact that the density in a mixed layer is not uniform is solved.
Owner:WUHAN YATU TECH CO LTD

Asphalt pavement paving structure suitable for heavy traffic and paving method thereof

The invention discloses an asphalt pavement paving structure suitable for heavy traffic and a paving method thereof, and relates to the technical field of pavement design, and the structure comprises a subbase layer, a base layer, a reinforcing layer and a surface layer which are sequentially arranged from bottom to top in the vertical direction. The reinforcing layer is additionally arranged between the base layer and the surface layer, the fiber anti-crack waterproof coiled material layer has flexibility and tensile strength, reflection cracking of the base layer can be effectively inhibited, water erosion can be blocked, the upper gravel layer and the coiled material form a good embedding and extruding effect, and the interlayer anti-shearing capacity is remarkably improved; the three layers of fiber nets are arranged in the surface layer, temperature shrinkage cracks and load stress cracks of different surface layers are effectively restrained through built-in engagement among the fiber nets, the asphalt and the gravel, the problem that cracks of an existing pavement frequently occur is solved, and the service life of the asphalt pavement is prolonged.
Owner:广州珠江黄埔大桥建设有限公司

Reinforcing mesh and shear nail combined three-dimensional system applied to building terrace and bridge deck pavement

The invention discloses a reinforcing mesh and shear nail combined three-dimensional system applied to building terrace and bridge deck pavement, which comprises a reinforcing mesh and a shear nail component, the shear nail component comprises a shear nail cap, a shear nail body and a shear nail connecting piece, the reinforcing meshes vertically cross and penetrate through the side holes of the shear nail connecting pieces to be fixedly connected with the shear nail components; the shear nail components are divided into an integral type and an assembled type, the integral type shear nail components and the reinforcing meshes are welded and fixed through the shear nail connecting pieces to form a standardized three-dimensional unit module, module hoisting and module connection are rapidly carried out, the shear nail connecting pieces replace binding construction at the positions of reinforcing steel bar intersection points, and the construction efficiency is improved. And spacing and positions of the steel bars are controlled. The thickness of the concrete protection layer is accurately controlled, the reinforcing mesh is supported and positioned, the cracking risk is effectively reduced, and the wear resistance, pressure resistance, fatigue resistance and impact resistance of building terraces and bridge deck pavement are improved.
Owner:JIANGSU UNIV OF SCI & TECH