726 results about "Composite slab" patented technology

A ribbed metal plate for a composite slab that includes a substantially planar plate having an upper surface and a lower surface and a plurality of laterally-spaced, longitudinally-extending ribs that have a keystone profile and wherein the sidewalls are angled toward each other. Ends of the ribs are integrally formed. The rib plate is secured to bearing walls in a structure and concrete is poured on the ribs to form a composite deck. The ends of the ribs extend in the lateral direction to form a composite structure retarding movement of cured concrete in a longitudinal direction. The ribbed plate can also be used in composite beams.

A composite slab and joist assembly includes a joist, at least one deck panel on the joist, slab reinforcement above the joist and dock panel, and a slab of concrete formed on the deck panel and joist such that the slab encloses the slab reinforcement and a top portion of the joist. The joist includes a bottom chord, a top chord, and a web affixed therebetween. The top chord has first and second structural angles. The first structural angle has in cross-section a horizontally-extending leg and an upwardly-extending leg meeting at a corner. The second structural angle has in cross-section a horizontally-extending leg and a downwardly-extending leg meeting at a corner. The upper portion of the web is joined to the second structural angle against the downwardly-extending leg.

The invention discloses a manufacturing technique for a composite board and belongs to the technical field of composite metal strip rolling. The manufacturing technique comprises the following steps implemented successively: joint surface machining, end surface machining, press fit, blank assembly, vacuum pumping and inert gases filling, heating, hot rolling and verifying. By means of the manufacturing technique, the machining accuracy is improved, and volume production of carbon steel-stainless steel composite boards is achieved; simultaneously, air in a combination blank is replaced through vacuum pumping and inert gases filling, oxidization of interfaces of the combination blank is prevented in a subsequent heating process, a little of residual air between the composite interface and two layers of stainless steel interfaces can be squeezed into an air storage bag gradually along with the moving of a roller and the composite blank simultaneously, and the residual air is prevented from expelling a separating agent or oxidizing the composite interfaces, accordingly, the joint of the finished composite slab is improved effectively, and the quality of the composite slab is further improved.

Provided are a DGC modular fabricated building system and a building method thereof. Wallboards are composite boards prefabricated in a factory. Light steel profiles and light steel keels are connected through self-tapping screws. The corners of the light steel profiles with grooves in frames are connected through self-tapping screws and light steel keel connecting pieces. The interiors of the wallboards are filled with heat preservation materials. Pouring layers of modified cement mortar or light aggregate concrete materials are arranged on the outermost sides of the wallboards. Floors are composite boards prefabricated in the factory, and each composite board is a foundation bottom plate or a floorboard or a roof panel of the DGC modular fabricated building system. The wallboards are connected through board connecting pieces, the wallboards and the floors are connected through board connecting pieces, and the floors are connected through board connecting pieces. The DGC modular fabricated building system is simple in structure, convenient to mount and low in cost, the construction period can be saved, and therefore the defects that an existing fabricated building is single in structure, complex in mounting process and high in manpower cost are overcome.

The invention discloses phosphate base cementing agent which is formed by uniformly mixing phosphate cementing mixture and water. The phosphate cementing mixture comprises the following component according to mass percent: 65 to 80 percent of phosphate cementing mixture and 20 to 35 percent of water; the phosphate cementing mixture comprises the following components according to mass percent: 20 to 60 percent of dihydric phosphate, 20 to 40 percent of magnesite, and 0 to 40 percent of inorganic mineral filler, wherein the mass of retarder occupies 5 to 15 percent of that of the magnesite; and the mass of sand occupies 0 to 30 percent of that of the phosphate cementing mixture. Phosphate gelling slurry can be served as structural adhesive to prepare fibrous composite material for concrete reinforcement, to improve the compatibility between the phosphate gelling slurry and concrete, and can also be served as gelling material to prepare artificial composite board material, self-leveling slurry, protective paint and the like.

A low noise roof deck system eliminates the thermal expansion noises associated with metal decking and includes structural features that permit installation of composite roofing shingles directly over the deck without venting. The system includes a composite panel base layer surmounted by a layer of water resistant material, a layer of foam synthetic resin insulation and a layer of mineral board. A second layer of mineral board may be overlaid on the first mineral board layer. The system is easily installed over a system of conventional underlying supports to provide a strong, rigid deck for supporting a waterproof composite shingle roof membrane and forming a quiet weatherproof roof system. The composite base panel has a layer of synthetic resin foam insulation sandwiched between a base layer of wood fibers bonded with an inorganic cement and an upper layer of a resin bonded wood product.

The invention discloses a composite board and a manufacturing method thereof, and belongs to composite boards of building materials and design and manufacturing methods of the composite boards. The composite board comprises fiber woven nets, chopped fiber, fine concrete and an insulating material. The composite board is designed based on certain hypothesis. The manufacturing method of the composite board comprises the following steps: 1, mixing and stirring an epoxy resin, a curing agent and a diluting agent according to a ratio, and uniformly coating the mixture on the surface of a fiber woven net; 2, fixing a wooden template, firstly stirring cement, coal ash, silica ash and silica sand, subsequently adding water to stir, adding a water reducing agent, stirring, adding the chopped fiber, and further stirring; 3, firstly casting the stirred fine concrete on the template, subsequently laying another fiber woven net, further casting the fine concrete and laying another fiber woven net; 4, casting the fine concrete on the fiber woven nets, and laying the insulating plate which is subjected to surface roughening treatment; 5, casting the fine concrete on the roughened insulating plate, laying another fiber woven net, further casting the fine concrete, laying another fiber woven net and further casting the fine concrete; 6, demolding and maintaining. The composite board has the advantages that the weight is light, the thickness is large, the bearing capacity is large, and the construction is simple.

The invention discloses a composite board produced by waste plastics and industrial gypsum and a production method thereof. The composite board is prepared by the waste plastics and the industrial gypsum according to certain weight ratio. The invention adopts waste plastics such as waste polypropylene plastic, waste polyethylene plastic, waste polystyrene plastic, waste polyvinyl chloride plastic and so on discarded by industrial production and human life and the industrial gypsum as main raw materials to produce the composite board through the crushing and hot pressing, the composite board achieves the standard of the national building formwork, reduces the pollution of the industrial gypsum and plastic wastes to the environment, can also be used to substitute a wood building formwork or a steel building formwork which is widely used for the prior building construction, has low production cost, light weight, high strength, shock resistance, and easy mold stripping, can turn the harmful into the beneficial and turn waste into valuables, and greatly accelerate the progress of waste resource recovery in our country.

The invention discloses a vanadium/copper solid solution transition connection-based welding process for a titanium-containing metal layer/pipeline steel layer composite board. The titanium-containing metal layer/pipeline steel layer composite board is formed in the way that an industrial pure titanium and titanium alloy board and a pipeline steel board are connected together by the explosive welding process and the connected boards are rolled by use of the controlled rolling and controlled cooling technology, so that an industrial pure titanium and titanium alloy layer is arranged on one side of the titanium-containing metal layer/pipeline steel layer composite board, and a pipeline steel layer is arranged on the other side. The welding process provided by the invention is simple in process implementation, can realize metallurgical butt-welding engineering production of the titanium-containing metal layer/pipeline steel layer composite board, enables a metallurgically connected seam to be relatively good in appearance and favorable in mechanical property index, and achieves reliable connection of the titanium-containing metal layer/pipeline steel layer composite board while guaranteeing the decay resistance of the titanium-containing metal layer/pipeline steel layer composite board.

The invention relates to a pre-stressed concrete truss composite slab and a manufacturing method thereof. The pre-stressed concrete truss composite slab comprises a concrete base plate. A truss is arranged on the concrete base plate. The truss comprises an upper chord, first webs and second webs are respectively arranged on two sides of the upper chord, the first webs and the second webs are continuously-bent reinforced steel bars, and the top bent parts of the first webs and the second webs are connected with the outer wall of the upper chord. When hoisting equipment grabs the upper chord for hoisting, the webs, transverse assisting reinforced steel bars and pre-stressed longitudinal ribs are stressed, and the webs are prevented from being stressed independently and falling out of the concrete base plate 10.

The invention relates to a prestressed hollow composite slab and a manufacturing method thereof, and belongs to the field of normal building construction. The composite slab comprises prefabricated pieces (1) and composite layers (2). Thickness of a bottom plate (3) of each prefabricated piece (1) is greater than or equal to 35 mm and less than or equal to 60 mm, prestressed steel wires (4) in the bottom plate are located at the upper parts of transversal steel bars (5), and the length of each prestressed steel wire (4) and each transversal steel bar (5) extending out of the corresponding bottom plate (3) is greater than or equal to 50 mm; the width of each prefabricated piece is greater than or equal to 1500 mm, light-weight material filling pieces (6) are arranged at the upper part of each prefabricated piece (1); the heights of concrete solid ribs (7) between adjacent filling pieces are greater than or equal to 50 mm; the transversal steel bars (5) between adjacent prefabricated pieces (1) are overlaid in a joint area (8), upper part steel bars (10) of the composite slab are bound, composite layer concrete is poured, and the composite slab is formed. According to the prestressed hollow composite slab and the manufacturing method thereof, the self-weight of the composite slab is light, the stiffness in the longitudinal direction and the transversal direction is high, the application range is large, and transportation and installation are convenient. The prestressed hollow composite slab and the manufacturing method thereof have good economic efficiency and applicability, and play a role on promoting the development of building technology.

The invention discloses a welding method of a stainless steel lining composite board. The welding method comprises the steps that double V-shaped grooves are formed; welding is carried out on the bottom of the V-shape groove in one side of a carbon steel layer by adopting MAG welding, and a pre-welding joint is formed; welding is carried out on a groove between the V-shaped groove in one side of acorrosion-resistant alloy layer and the V-shape groove in one side of a carbon steel layer by adopting plasma welding, laser welding or TIG, and a base layer inner weld joint is formed; welding is carried out on exterior of the pre-welding joint on one side of the carbon steel layer by adopting submerged arc welding to form a base layer outer weld joint; welding is carried out on the bottom of the V-shaped groove at one side of the corrosion-resistant alloy layer by adopting the MAG or the TIG, and a transition layer welding joint is formed; and welding is carried out on the exterior of the transition layer welding joint by adopting the MAG or the TIG, and a composite welding joint is formed. According to the welding method, through the matching of the reasonable groove design and the welding process, high-quality and efficient welding of the stainless steel lining composite board is achieved, the performance is excellent, automatic production is easy to realize, and the wide market prospect is achieved.

The invention discloses a connection method of precast reinforced concrete slabs, and belongs to the technical field of building structures. The connection method is characterized in that reinforcing steel bars which are fully anchored and of which exposed parts are in a shape of a half ring are embedded on lateral sides of the precast reinforced concrete slabs, transverse reinforcing steel bars are hung on the reinforcing steel bars in the shape of the half ring, and lapped in a reserved gap among the precast reinforced concrete slabs; a template is arranged at the lower part of the reserved gap, the precast reinforced concrete slabs are connected as a whole by pouring concrete in the reserved gap; or the template is arranged at the lower part of the reserved gap, and the concrete is poured in the reserved gap and at the upper parts of the precast reinforced concrete slabs to form a precast concrete composite slab. The connection method disclosed by the invention can improve the integrity of an assembled monolithic concrete structure and promote the development of building industrialization.

The invention relates to a plain carbon steel and wear-resistant steel clad steel plate and a production method thereof and belongs to the technical field of metal clad plate production. Plain carbon steel meets the requirement of GBT700-2006, wear-resistant steel meets the requirement of GBT24186-2009, and an isolation agent comprises MgO and Al2O3. A smelted plain carbon steel billet and a smelted wear-resistant steel billet are break-down rolled, the four edges of each billet are welded and sealed, and vacuumization is performed; after being rolled, the billets with heat are put into water or cooled in the air; and the water entering temperature is controlled between 780 DEG C and 820 DEG C, and an air-cooled plate is subjected to offline quenching and tempering heat treatment. The steel plate has the advantages that the wear-resistant quality of the wear-resistant plate is improved, the service life of the wear-resistant plate is prolonged, and important significance in energy conservation, energy consumption reduction and the like is achieved.

The invention relates to a composite slab of profiled steel sheet-bamboo plywood and a making method thereof. The structure of the invention is that a profiled steel sheet is held between two bamboo plywood; the interface of the bamboo plywood and the steel plate are connected by adhesive with high intensity; periphery of the board are sealed with bamboo lath and fixed by bolts; the upper surface of the composite slab is bonded with rearranged bamboo-made panel by adhesive, causing the composite slab to have the function of structure function as well as decoration function. The composite slab produced in the method of the invention is characterized by small dead weight, high intensity, large rigidity, thin board body, good extensity, excellent anti earthquake performance, requiring no secondary decoration, fast construction speed and high industrialization degree. The composite slab of the invention can also be used as construction wall, has good force-bearing performance, can realize the purpose of substituting wood, steel and other materials by using bamboo, be widely applied to various light construction, mobile house, floor-increase building, ship, etc. and has good market development prospect.

The invention discloses a beam-slab structure for marine environment. The beam-slab structure comprises a prefabricated UHPC(ultrahigh performance concrete) formwork composite beam and a prefabricatedFRP(fiber reinforce plastic) rebar truss composite slab ; the prefabricated UHPC formwork composite beam comprises an UHPC formwork, beam bottom formwork internal prestress FRP rebars are arranged inside the U-shaped UHPC formwork, FRP stirrups are arranged in a U-shaped area of the U-shaped UHPC formwork, FRP bearing rebars are arranged on the top of the FRP stirrups, and FRP tensile longitudinal rebars are arranged at the bottom of the FRP stirrups; the prefabricated FRP truss composite slab comprises an FRP rebar truss, slab bottom formwork internal prestress FRP rebars are arranged at thebottom of the FRP rebar truss, slab bottom transverse FRP rebars are arranged on the slab bottom formwork internal prestress FRP rebars, UHPC bottom plates are arranged on the slab bottom transverseRFP rebars, and prefabricated concrete ribbed slabs are arranged on the top of the DRP rebar truss. The invention further discloses a building method of the beam-slab structure. Local materials such as sea water and sand can be used for mixing sea water and sand concrete which can be used for hoisting construction immediately, and meanwhile, the beam-slab structure has excellent chloride ion erosion resistance capacity.

The invention discloses an assembling multi-section beam center support steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part ofthe full bolts without the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, a precast concrete-profiled steel plate composite slab or a poured concrete slab is assembled to form an assembling multi-section beam center support steel frame structure system capable of self-centering afterthe earthquake.

The invention belongs to the nondestructive testing technical field, and particularly relates to an optical nondestructive testing instrument, namely an analysis meter for residual stress distribution along depth. After emitted by a laser device (1) and passes through a spatial filter (2), a laser is emitted to a large-area holophote (3.1). The large-area holophote (3.1) reflexes the laser to an aspherical mirror, and the light field is changed to be a uniform collimating light field. After being refracted by a three-direction moire composite slab (3.3) and a phase shifter total reflection component (5), the light field irradiates to the surface of a test piece. A control processing system (8) controls a phase shifter on the outer ring of the instrument total reflection component (5), and optical distance is interfered. An image acquisition device (7) acquires a streak image which is formed by the interference of the light field on the test piece through a holophote A, and transmits the image to the control processing system (8). The control processing system (8) controls drilling equipment (6) to drill the test piece. By using the analysis meter for the residual stress distribution along the depth, a user can directly acquire the residual stress distribution data of the teat piece along the depth.

The invention discloses a composite board produced from modified phosphorus slag and waste plastics and a production method thereof. According to the invention, waste polypropylene or polyethylene plastics and industrial waste phosphorus slag are taken as major raw materials, and formed into high strength composite board by an appropriate preparation method; as a result, pollution on environment caused by the waste plastics and phosphorus slag is reduced and a new material is added to the constructional engineering; the new material is capable of substituting for bamboo plywoods and wood building templates which are widely used in building operations. Furthermore, a coupling agent isopropyl trioctylpyrophosphatotitanate or isopropyl trioleyl titanate is utilized to modify the surface of the phosphorus slag so that the surface property of the phosphorus slag is changed from hydrophily into lipophilicity; the modified phosphorus slag has excellent dispersing performance in an organic phase, so that the blending compatibility and combinability of the modified phosphorus slag with the waste plastics are greatly improved; consequently, the performance of the composite board is improved.