1991 results about "Mesh reinforcement" patented technology

A generally planar, structural insulated panel for building construction includes a pair of outer facings disposed on opposed surfaces of a plastic foam core. Both of the outer facings are gypsum cellulose fiber board such as gypsum wood fiber board. Disposed on the exterior surface of the gypsum wood fiber board on the exterior surface and between another expanded polystyrene insulation panel is a weather resistant barrier that is fastened to the gypsum wood fiber board. The exterior surface of the second insulation panel is fastened to the gypsum wood fiber board by mechanical fasteners. The insulation panels are then coated with a basecoat which has an embedded mesh reinforcement and then a finishing coat is applied to the base coating. Vinyl or aluminum metal siding can be fastened to the structural assembly by G screw fasteners or other mechanical fasteners.

A fastener for joining two pieces of rebar together in a rebar grid used to reinforce subsequently poured concrete is described. The fasteners include two clamp pieces that in certain embodiments completely wrap around a piece of rebar and are tightly secured thereto. Further, each clamp piece can swivel or rotate up to 360 degrees relative to the other clamp piece such that two rebar pieces intersecting at any angle can be coupled together.

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

The invention belongs to the field of water delivery engineering and relates to a green environmentally-friendly powder reinforced concrete water delivery pipe. The green environmentally-friendly powder reinforced concrete water delivery pipe is manufactured by uniform distribution of concrete on a reinforcement mat. The concrete is prepared from 450 to 500 weight parts of ordinary portland cement or low-alkaline portland cement having the average grain diameter of 30 to 60 microns, 90 to 130 weight parts of silica fume having the average grain diameter of 0.18 microns and SiO2 content greater than or equal to 85%, 100 to 130 weight parts of I-grade coal ash having the average grain diameter of 10 to 20 microns, 130 to 160 weight parts of more than S95 grade of slag powder having the average grain diameter of 10 to 30 microns, 520 to 600 weight parts of quartz sand having the grain diameter of 0.16 to 1.63 millimeters, 800 to 880 weight parts of crushed stone having the grain diameter of 5 to 14 millimeters, 12 to 20 weight parts of a composite high-efficiency water reducer having a water-reducing rate more than 30%, 7 to 12 weight parts of a corrosion inhibitor, 45 to 50 weight parts of a high-efficiency expanding agent, 130 to 150 weight parts of water, 0.8 to 1.2 weight parts of polypropylene fibers, and 80 to 160 weight parts of copper-coated steel fibers having the diameter of 0.18 to 0.25 millimeters and the length of 10 to 15 millimeters. The reinforcement mat is manufactured by weaving hard-drawn wires having the diameter of 4.0 to 6.0 millimeters as reinforcements and cold-rolled ribbed bars having the diameter of 5.0 to 10.0 millimeters as hoop reinforcements.

The invention discloses a preliminary bracing construction method for a tunnel with surrounding rocks containing collapsible loess and soft rocks. The method includes the following steps that a plurality of layers of advanced pipe sheds are arranged on a collapsible loess layer, and a single layer of advanced pipe shed is arranged on a soft rock layer; after the advanced pipe shed is set up, a working face is closed through sprayed concrete, a system anchor bolt is arranged on the soft rock layer, a foot locking small guide pipe is arranged at the arch springing position of the tunnel, and grouting is conducted on the rocks through permeation of the system anchor bolt and the foot locking small guide pipe; a pre-fabricated reinforcing mesh is paved on a concrete initial spraying layer formed by concrete initial spraying in a fluctuation mode, and a reinforcing mesh arranged at the collapsible loess layer is encrypted; a steel arch support is set on the collapsible loess layer, a reinforcing steel bar grid is set up at the soft rock layer, and the connecting position of the reinforcing steel bar grid and the steel arch support is welded; repeated spraying is conducted by adopting concrete spraying, and construction of tunnel preliminary bracing is finished. By means of the method, stress releasing and deformation coordination of two layers of surrounding rocks can be well controlled, operability is good, construction cost is low, and the safety is good.

The invention discloses a double-board laminated type concrete shear wall which comprises a laminated wallboard prefabricated part and a laminated wallboard truss steel reinforcement and laminated wallboard field-poured part, wherein the laminated wallboard prefabricated part comprises an external wallboard and an inner wallboard, an insulating layer is formed inside the external wallboard, and a steel reinforcement net is arranged inside the insulating layer. The production process comprises the steps of: (1) cleaning surface of a steel template; (2) automatically drawing, supporting the template and spraying a stripping agent; (3) placing a protective layer thickness spacer; (4) placing the steel reinforcement net of the external wallboard; (5) placing a truss; (6) placing an embedded part in the external wall; (7) pouring concrete; (8) installing an insulating material; (9) maintaining; (10) installing the steel reinforcement net inside the insulating layer; (11) repeating the steps 1 to 3; (12) installing steel reinforcement of the inner wallboard; (13) placing the embedded part of the inner wall; (14) pouring inner wall concrete; (15) laminating the external wall and inner wall; (16) conveying to a maintaining room for maintaining; and (17) hoisting and stacking. According to the invention, the materials are saved and the work efficiency is improved.

The invention relates to the field of transmission equipment, in particular to a concrete pole. Concrete is uniformly distributed on a reinforcing steel bar mesh, so that the pole is formed. The concrete comprises raw materials in parts by mass as follows: 480-550 parts of low-alkaline Portland cement or ordinary Portland cement with an average grain diameter of 30-60 mu m, 120-140 parts of silica fume with an average grain diameter of 0.18 mu m and the SiO2 content of no less than 85%, 80-110 parts of I-level pulverized fuel ash with an average grain diameter of 10-20 mu m, 110-140 parts of slag powder with the level higher than S95 and an average grain diameter of 10-30 mu m, 510-550 parts of quartz sand with a grain diameter of 0.16-1.63 mm, 860-920 parts of cobbles with a grain diameter of 5-14 mm, 14-18 parts of a compound high-efficiency slushing agent with a water-reducing rate higher than 30%, 7-12 parts of a corrosion inhibitor, 120-140 parts of water, 70-110 parts of a copper plating steel fiber with a diameter of 0.18-0.25 mm and a length of 10-15 mm and 0.8-1.5 parts of a polypropylene fiber. Prestressed wires with a diameter of 4.8-10.7 mm and taken as main bars and high-strength hard-drawn wires with a diameter of 3.0-5.0 mm and taken as circular structural bars are woven, so that the reinforcing steel bar mesh is formed.

The invention discloses a rebar mesh knitting unit which comprises rebar disc elements, a fixed-length shearing machine and a rebar knitting machine main body, wherein outgoing lines of the rebar disc elements, an inlet-outlet of the fixed-length shearing machine and a transverse guide wheel belt-shaped mechanism are located on the same horizontal line, and the height of the inlet-outlet of the fixed-length shearing machine is the same as that of the transverse guide wheel belt-shaped mechanism, when a lifting air cylinder is under an initial state. According to the rebar mesh knitting unit, automatic induction and clamping can be achieved, the spacing distance of rebar grids can be regulated, a knitted mesh is high in precision, and rebar is not easily loosened.

The invention relates to an anti-sliding, wear-resistant and light steel box girder bridge deck pavement and a preparation method thereof, which is characterized in that the method includes the following steps: 1) preparation of high toughness and high strength lightweight aggregate concrete and cement paste on a basalt bare stone surface layer: a. the high toughness and high strength lightweight aggregate concrete is prepared; b. the cement paste on the basalt bare stone surface layer is prepared; 2) pretreatment of the steel box girder bridge deck; 3) welding of shear key: the shear key is welded on the steel box girder bridge deck one by one according to mutual spacing of the shear keys with (30-60)cm plus (30-60)cm; the shear key is stud; 4) lashing of mesh reinforcement; 5) paving of the high toughness and high strength lightweight aggregate concrete layer: thickness of the high toughness and high strength lightweight aggregate concrete layer is 50-80cm; 6) paving of the surface layer of the basalt bare stone; then maintenance is carried out. The bridge deck pavement prepared by the method can effectively prevent disease occurrence of the steel box girder, prolong service life of the bright deck and simultaneously has the functions of anti-sliding, wear-resistant and noise reduction and has good pavement performance.

The invention discloses a rock slope ecological protection method and relates to the field of rock slope ecological protection. The method includes that a slope surface of a rock slope is cleaned; multiple anchor rods are inserted into the rock slope, meanwhile, multiple holes are formed in a rock surface through drilling, and one water guide pipe is inserted into each hole; a layer of cement grout is sprayed; a steel mesh reinforcement is laid on the layer of solidified cement grout, and concrete is sprayed again for solidification; a batten is fixedly tied to each row of anchor rod and each column of anchor rod outside the solidified concrete layer; then a galvanized wire mesh is laid on the uppermost layer; borrowed soil is prepared and sprayed to the slope surface where the galvanized wire mesh is laid so as to cover the galvanized wire mesh; plant seeds are sprayed and seeded and then covered by non-woven fabrics, and the non-woven fabrics can be removed when seedlings grow to 5-6cm or 2-3 leaves come out. By means of the rock slope ecological protection method, plants are planted to cover the rock slope, the phenomena of loosening and rock scattering are avoided, potential safety hazards are eliminated, and the ecological environment is advantageously maintained.

The invention relates to a method for reinforcing a bridge structure separated steel-concrete combined truss. The method is characterized by comprising the following steps of: 1, processing an interface at the joint of upper and lower flanges of a concrete beam; 2, planting steel bars in concrete at the joint of the upper and lower flanges of the concrete beam; 3, manufacturing steel plates (10),low-height steel box girders (12) and welding studs (9); 4, binding steel bar meshes (11), and installing in place; 5, manufacturing and installing upper and lower chord node plates (17) and connecting members thereof; and coating a structural adhesive on pouring joint surfaces of the steel plates (10) and the low-height steel box girders (12), and scattering fine sand; 6, installing the steel plates (10) and the low-height steel box girders (12) of the upper and low flanges, vertical rods (16), an external cable (14) and an anchoring tool; 7, manufacturing and installing truss diagonal web rods (15); 8, constructing a truss support; 9, mixing, spraying and curing self-compacting concrete; and 10, tensioning the external cable (14) to obtain an external prestressed steel-concrete combinedtruss reinforced structure. The method has the advantages that: vehicle operation is not influenced, external prestressed bars can be replaced and repeatedly tensioned, a beam body has superior overall working performance and high durability, the process is simple, the combined truss is convenient to maintain and cure, and the like.

The invention discloses a cast-in-place ecological slope protection and a construction method thereof. The construction method is characterized by including the steps of firstly, mounting anchor bolts (10) on a slope (1); secondly, laying a plurality of reinforcing steel bars (3) on the slope in a staggering manner, and forming a reinforcing steel bar mesh with a plurality of meshes; thirdly, fixing two of the reinforcing steel bars (3) at each joint of each mesh together, and fixedly connecting the reinforcing steel bar mesh with the anchor bolts (10); fourthly, disposing a mould (5) in each mesh to allow all the adjacent moulds on the reinforcing steel bar mesh to enclose to form cavities mutually communicated through side plates of the moulds; and fifthly, pouring concrete into the cavities so that a plurality of mesh beams (2) are formed on the slope (1), wherein the mesh beams (2) are connected to form a mesh protection slope with a plurality of meshes to be planted. Pouring of the mesh beams is achieved in the field of a side slope, and accordingly the mesh beams are integrally connected mutually. In addition, the mesh beams are fixedly connected with the side slope, and accordingly a foundation for greening of the side slope is laid while the structure of the slope protection is stable.

A multifunctional tunnel rock drilling frame-arch integrated machine, comprising a host platform (2) set up on a chassis (1), the rear of the host platform is provided with two booms (6) through a slewing seat (5), said The jib can be folded and retracted when it is running or at rest; the front end of the forearm is slewing and equipped with an arch grabbing device (18), a rock drilling device (19), a manned platform (24), and a truck-mounted crane (23). The invention can carry out the arch support operation when excavating the full section of the tunnel, two steps, and three steps. Through the cooperation of the two arm frames and the working devices on them, the arch frame can be transported with the vehicle, the arch frame is installed, and the steel bars are hung. Drilling and installation of mesh, welded transverse reinforcement, anchor rod and advanced small conduit, and the efficiency is much higher than that of manual labor.

The invention relates to a tunnel steel arch locking bolt mesh spraying combined structure, which can greatly shorten the construction period, lower the construction difficulty, benefit for the construction safety and the structure stabilization and obviously lower the construction cost. The invention comprises steel arches, wherein, a steel mesh is arranged on the steel arches; the joint point of the steel arches is provided with a locking bolt (anchor pipe); the periphery of the steel arches is provided with a sprayed concrete layer; a formworking concrete layer is arranged outside the sprayed concrete layer; a waterproof layer is arranged between the sprayed concrete layer and the formworking concrete layer.

The present invention relates to methods and apparatuses for an automated reinforced concrete construction system for onsite slip-form molding and casting a variety of cementitious mixes in a cast in place leave in place externally moldable flexible reinforced containment sleeve providing a wide variety of interchangeable full-scale molding configurations simultaneously optimizing a wide variety of cementitious mix curing characteristics, further having optional internal reinforcement net(s), for layer wise interlocking additive printed brick deposition providing improved slip-form mold casting of a wide variety of reinforced concrete structures; the present invention further includes a variety of operating platforms suitable for on and offsite constriction as disclosed herein.

A steel plate-concrete composite structure reinforcement method of a structural negative moment region is characterized in that the method comprises the steps of: (1) carrying out interface treatment of a negative moment region of a concrete box girder top plate 3; (2) planting bars on the surface of the negative moment region of the concrete box girder top plate 3; (3) manufacturing a steel plate 9, a welding stud 8 and a corrugated steel plate 14: (4) forming a self-compacting concrete pouring hole 13 and a location leveling hole 17 on the steel plate 9; (5) erecting a reverse ejection support 2 and unloading reverse ejection; (6) binding a reinforcing mesh 10 and installing in position; (7) applying a structural adhesive on the steel plate 9 and spreading fine sands; (8) installing and leveling the steel plate 9 to the design position, applying a pre-stress to the top of the steel plate 9 through a pre-installed apparatus; (9) mixing and pouring self-compacting concrete; and (10) releasing the pre-stress, removing the corrugated steel plate 14, curing concrete, constructing a pavement layer, and removing the reverse ejection support 2. The novel steel plate-concrete composite structure negative moment region reinforcement method can be widely used for negative moment region reinforcement of concrete box girder, T-beam, hollow plate girder, common reinforced concrete beam, and pre-stressed concrete beam, and can be used in the bridge reinforcement with the advantages of almost no reduction of the headroom below the bridge, no requirement for surface levelness of the original structure, low cost, no influences on the appearance, and so on. The steel plate-concrete composite structure reinforcement method is economic, safe, and practical, is easy to ensure the project quality and has wide application prospect.

The invention discloses a deep foundation pit combination supporting construction method for geology with high water level and large particle size sand gravel. High pressure jet grouting pile construction is conducted outside a foundation ditch retaining and protecting system, by means of a triple placing method, cement paste is injected into underground soil filling layer and sand gravel gaps, after solidifying, secant pile wall and retention wall are formed, the underground water is prevented outside the periphery the foundation ditch retaining and protecting system, and conditions are created for the construction of a support pile; when the strength of outer side jet grouting pile meets design requirements, a long auger drilling cast-in place pile begin to be constructed close to the inner side of the jet grouting pile; after perfusion pile beings maintained for 15 days, jet grouting pile construction begins to conduct to make up partial failure of waterproof curtain of the jet grouting pile in construction of retaining and protecting pile, and retaining and protecting strength and water interception effect of the retaining and protecting system are increased; at last, in an earth excavation process, bar-mat reinforcement sprayed concrete slope protection and construction of dewatering well, open trench and water-collecting well in the foundation ditch are completed well, multiple retaining and protecting forms are used for combining construction and interaction. Accordingly, the problems of retaining and protecting the geology with high water level and large particle size sand gravel and processing the geology are solved.

The invention provides an accurate leveling device for cast-in-situ concrete flooring formed in one step and a construction method. The device comprises a structural slab form and the reinforcement frameworks of beams, wherein a plurality of leveling adjusting racks are uniformly distributed and welded on the longitudinal reinforcement of each beam; each leveling adjusting rack comprises a semicircular bracket, a screw rod, an adjusting screw nut and a steel pipe sleeve; and steel pipe guide rails are longitudinally supported on the leveling adjusting racks. All mesh reinforcements, the leveling adjusting racks and the steel pipe guide rails supported on the leveling adjusting racks together constitute the accurate leveling device for the cast-in-situ concrete flooring formed in one step. The heights of the steel pipe guide rails are adjusted by rotating the adjusting screw nuts, and an automatic leveling rotating laser level gauge is adopted to determine that the heights of the steel pipe guide rails are correct. The accurate leveling device has the advantages that the structure is simple, part of elements can be used repeatedly in a turnover manner, the cost is low, the operation is simple and convenient, and the construction efficiency is high. Through the method provided by the invention, ground level control and accurate concrete construction leveling can be conducted for cast-in-situ concrete of each layer of floor; and the method is used for leveling operation for cast-in-situ concrete of each layer of floor and improves the flatness standard of the flooring.

Disclosed are a non-dismantling die cast-in-place lightweight thermal insulation wall formboard, a thermal insulation wall and a construction method thereof. The formboard comprises an inner formboard unit, an outer formboard unit and opposite-drawing connectors connecting the formboard units; the inner formboard unit comprises a formboard frame, steel bar grid frames connected between inner circles of the formboard frame, steel bar clamps connected to the cross points of the steel bars of the steel bar grid frames and a formboard core filling the inner side of the formboard frame; the inner formboard unit and the outer formboard unit are the same in structure and are connected at two ends of the opposite-drawing connector symmetrically; the steel bar clamps of the inner formboard unit and outer formboard unit are corresponded horizontally and are connected through the opposite-drawing connectors. The thermal insulation wall is simple in structure, by means of the double-layer wall formboard, the wall thickness consistence is guaranteed, the strength performance requirements are met, the thermal insulation wall is convenient to construct, the matching bar, core column and tie beam arrangement procedures are omitted, construction cost is lowered, constructing efficiency is improved, and the formboard can widely applied to wall construction.

The invention discloses a large-span steel box beam bridge deck pavement layer material gradient structure pavement construction method. The method comprises the steps that 1, derusting by sandblast and cleaning processing are conducted on an interface of a steel bridge deck; 2, shearing force parts are welded between a steel plate and a concrete pavement layer; 3, steel rib meshes are paved, and the steel rib meshes are bound to the shearing force parts; 4, high-strength toughening light concrete is poured; 5, a DPS waterproof layer is sprayed; 6, a bond stress absorbing layer is paved; 7, high-viscosity high-elastic SMA-13 bituminous mixtures are paved. According to the large-span steel box beam bridge deck pavement layer material gradient structure pavement construction method, polymers and fibers are added, the light aggregate concrete mix proportion design is optimized, the strength, the toughness, the deformability and the anti-fatigue performance of the light aggregate concrete are strengthened, and an optimal design on the arrangement of the shearing force studs and the steel rib meshes and the reinforcement ratio is conducted.

The invention relates to indoor decoration and an indoor decoration construction technology, in particular to a construction method of an indoor sound insulation construction structure. The construction method is characterized by including the following steps of (S1) ceiling sound insulation construction, (S2) wall sound insulation construction, (S3) ground sound insulation construction, (S4) door pocket and sash sound insulation construction and (S5) wall switch and socket sound insulation construction, wherein the (S1) ceiling sound insulation construction further includes the following steps of snapping lines, fixing hangers, installing a main keel, installing sub keels, installing wall sound insulation rubber strips, installing sound insulation cotton, installing a cover panel and filling sealant into seams; the (S3) ground sound insulation construction further includes the steps of processing a base course, finding an elevation, laying a vibration isolator, laying reinforcing meshes, laying a concrete layer, leveling and conducting maintenance. By the adoption of the indoor sound insulation construction structure and the construction method of the indoor sound insulation construction structure, the sound insulation effect is good, and the decoration is attractive.

The invention belongs to the technical field of concrete support and protection of tunnels dug by a full face tunnel boring machine, in particular to a full face tunnel boring machine concrete spraying device, which comprises a spouting head, a spouting mechanical hand telescopic arm frame assembly, an annular spouting slide frame assembly, a spouting mechanical hand peripheral rotating device and a spouting slide frame longitudinal moving device, wherein the spouting mechanical hand telescopic arm fame assembly is arranged in the longitudinal direction of the tunnel, the spouting head is arranged on the spouting mechanical hand telescopic frame assembly, the spouting mechanical hand telescopic frame assembly is fixedly connected with the spouting mechanical hand peripheral rotating device through a connecting plate, a large gear ring of the spouting mechanical hand peripheral rotating device is fixedly arranged at the inner side of a slide frame of the spouting slide frame assembly, and the spouting slide frame longitudinal moving device is transversely arranged at the lower part of the spouting slide frame assembly through a connecting plate. The full face tunnel boring machine concrete spraying device has the advantages that the design is reasonable, the timely fast proceeding can be realized after shield exposure during tunnel digging, the spouting support and protection can be timely performed on the inner surface of a tunnel in an unstable stratum or when a crushed zone is passed, the surrounding rock convergence is effectively prevented, the personnel safety is ensured, in addition, the parallel operation of tunnelling, steel bar net hanging, anchor rod beating, steel arch frame erecting and concrete support and protection spraying in the tunnelling process can be realized, and the work efficiency of the primary support and protection can be comprehensively improved.

The invention discloses a reinforcement fiberglass resin concrete tube used for burying and a production method thereof, aiming at providing a reinforcement fiberglass resin concrete tube used for burying and a production method thereof with the advantages of corrosion resistance, high intensity, small resistance, low manufacture and use cost, simple manufacture technique and convenient construction. The reinforcement fiberglass resin concrete tube comprises a circular tube cast by the concrete composed by unsaturated resin and quartz sand; and connecting ports which are mutually inserted are manufactured at the two ends of the circular tube. The invention is characterized in that a tubular reinforcement mat is arranged in the circumferential wall of the circular tube; and the concrete comprises fiberglass. The production method thereof is as follows: manufacturing the reinforcement mat, diefilling, dosing, mixing, casting, solidifying, demoulding, correcting, and warehouse-in inspection. The reinforcement fiberglass resin concrete tube a lower cost than a steel tube, can not generate rustiness, and has longer service life compared with the steel tube. The mutual connection is not welded; moreover, the reinforcement fiberglass resin concrete tube is a burying jacking perfusion tube which can be broadly applied to a drinking tube or a drainage tube with the advantages of high intensity, low cost, safety and sanitation and convenient construction.

A method for forming a composite wall (1), said method including the steps of: erecting frame (2) including a plurality of generally upright spaced apart studs (3); positioning a plurality of external cladding sheets (4) over the frame in a generally horizontal orientation such that a majority of the cladding sheets extend across two or more of the studs; fastening the sheets (4) to the frame in substantially contiguous abutting relationship to form a generally planar substrate for a wall; and applying a surface render (10, 12) including a reinforcing mesh (11) substantially uniformly over the substrate; thereby to form a structural wall with an external appearance of rendered masonry without the need for supplementary internal rendering, bracing for reinforcement.