182results about How to "Improve prefabrication rate" patented technology

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 provides a simply-built green light steel fabricated building and an installation method. The fabricated building comprises wall plates, main plates, composite frame columns and main connection pieces. The two wall plates are connected by means of the corresponding main connection pieces through self-tapping screws. The composite frame columns and the wall plates are connected by means of the corresponding main connection pieces through self-tapping screws. In the connection process, firstly the main connection pieces abut against the composite frame columns, the self-tapping screws are screwed into the composite frame columns to fix the composite frame columns, the wall plates are then arranged in place, and the main connection pieces are clamped into lateral side grooves of the wall plates. The main boards are connected with the composite frame columns, and body column sleeves of the portions, on the top layers of the main plates, of the composite frame columns are inserted in upwards-exposed tenon columns in a sleeved mode and are then fixed through bolts. By means of the full industrialized prefabrication of the wall plates and the main plates, the prefabrication rate of main components of the building is greatly increased, and therefore the structure safety and quality of the building are better facilitated, site workloads are reduced, the construction environment pollution is reduced, the construction period is shortened, and cost is saved.

The invention discloses a butt joint connecting structure of precast concrete components. The connecting objects are a component I and a component II which are closely connected with each other through a concave pit/a groove and a protrusion which are matched with each other in shape and size and paved with a cushion ply, and meanwhile a rear sealing troughed belt is formed between the two precast concrete components; a connecting mode of 'a longitudinal bar-a sleeve-a connecting rod-a sleeve-a longitudinal bar' is adopted for longitudinal bar connection, connection between the connecting rod and sleeves at the two ends can achieve a prestressed connection effect through a difference between pitches at the two ends. According to the butt joint connecting structure of the precast concrete components, the problems that in existing cast-in-place connection and bed mortar connection, time for forming bearing capacity on the joint is too long, assembly schedule is affected, the difficulty for transporting and protecting longitudinal bars to be connected is great, and minimum clear distance of grout sleeves and thickness of a protection layer is difficult to be guaranteed are solved, and meanwhile the prestressed connection is achieved.

The invention relates to a light-weight steel structure house and a construction method thereof. The light-weight steel structure house comprises a house frame, double-layer outer wall plates, inner wall plates and lightweight floor plates. The house frame comprises a foundation, supporting upright columns, truss beams and cross sleeve connecting pieces; the supporting upright columns comprise four corner supporting upright columns, a plurality of outer supporting upright columns and a plurality of inner supporting upright columns; each supporting upright column is of an I-shaped steel structure; and the supporting upright columns are mounted on the foundation in mutually-parallel mode. The double-layer outer wall plates are arranged between every two adjacent outer supporting upright columns or between the adjacent corner supporting upright columns and the outer supporting upright columns. The inner wall plates are arranged between every two adjacent inner supporting upright columns or between the adjacent inner supporting upright columns and the outer supporting upright columns. The lightweight floor plates are parallelly arranged between every two adjacent truss beams. The light-weight steel structure house and the construction method thereof have the advantages that by means of the house frame, the double-layer outer wall plates, the inner wall plates and the lightweight floor plates and adjustment of connection of all the structures, the house is convenient for correction, effective heat dissipation and noise reduction are achieved, and meanwhile the overall strength of the house is guaranteed.

The invention relates to a prefabricated cold-formed thin-walled steel plate column structure tenon and mortise connection system and a construction method thereof, and belongs to the technical fieldof structural engineering. Single-hole columns, double-hole columns, three-hole columns and four-hole columns are support columns of the system. A floor module is the main structure of the system. Theconnection mode between the floor and the columns is the connection mode between the support columns and the main structure of the system. The single-hole columns and the double-hole columns are respectively arranged at joint connection support parts at the bottom of the floor module. The three-hole columns are arranged at corner support parts at the bottom of the floor module. The four-hole columns are located at center cross support parts at the bottom of the floor module. Through the method of optimizing the light steel plate column structure system by implanting beam-column joints in thefloor, the structure is allowed to bear the force more reasonably, the consumption of building materials and the amount of construction work at a construction site are greatly reduced, and a rapid green construction is truly realized. The whole building is sturdy and durable, thermal-insulating, lightweight, energy-saving, environmentally friendly, suitable for all kinds of housing construction and highly applicable, and will bring good economic and social benefits.

The invention discloses a connecting node of an assembled whole thick prefabricated slab. Connecting steel bars are reserved on the connecting surface of a prefabricated slab unit in the mode, the exposed parts of the connecting steel bars are ' '-shaped, and the exposed parts and the connecting surface form a closed polygon. In the connecting mode for the prefabricated slab unit and a beam or a wall, the connecting steel bars of the prefabricated slab unit are inserted with steel bars configured for the beam or the wall together at the connecting positions in a penetrating mode. Viewing from the cross section of the whole connecting node, the connecting steel bars and the steel bars configured for the beam or the wall form a single closed stirrup or a composite stirrup, and longitudinal bolt steel bars penetrate into the inner corner position of the single closed stirrup or the composite stirrup. The connecting node of the whole thick prefabricated slab unit can achieve the equivalent performance as a prefabricated slab connecting nodes and a cast-in-place concrete structure while achieving higher prefabrication rate and assembly rate. The invention further provides the whole thick prefabricated slab unit for achieving the connecting mode.

The invention relates to a building adopting an aseismatic precasted reinforcing steel truss shear wall composite structure, and belongs to the architectural field. The building adopts the scheme that reinforcing steel truss concrete shear walls provided with steel frames and composite floor slabs with prestressed concrete sheets are precasted; a foundation is connected with steel columns and the shear walls; the steel columns are connected with steel beams; the steel beams are connected with the composite floor slabs and the shear walls; the shear walls are connected with the composite floor slabs; an upper section of each shear wall is connected with the lower section of each shear wall; the steel columns are connected with the shear walls; the steel beams are combined and connected with the shear walls. According to the invention, the safety, economy and durability of the building can be ensured in virtue of the reliable integrity and seismic resistance of the connection between the structural elements; the steel structural elements and the steel concrete composite members have favorable connection performance, the labor environment for operators is improved, the construction period is shorted and the construction cost is reduced furthest; besides, the large span can be realized as the building structural elements are made of steel materials with higher strength, so that the building is easy to refit and renovate after several years, and the high durability is realized.

The invention relates to a multi-storey and high-rise steel structure house integrated system with pillars and walls in equal thickness. According to a structural scheme of rectangular steel tube concrete pillars, a steel framework beam and a steel support adopted by the invention, an outer wall, a separating wall, a core tube wall and a firewall are arranged in the steel structure framework, and indoor partitioning walls are arranged in rooms; floors and stairs are arranged between each layer of the steel framework beams. The multi-storey and high-rise steel structure house integrated system with equal-thickness pillars and walls is characterized in that the width of the pillars is 180mm-200mm, an inner partition plate and a transverse partition plate are not arranged inside each pillar, and the width of an outer ring beam combined with each pillar is limited to be within 200mm; inner beams of the steel structure house adopt small steel beams; after fireproof paint and a screeding layer are sprayed, the beam width is controlled to be within the width of the partition walls, the wall plates adopt composite wall plates with good thermal insulation performance and good fireproof soundproof performance, and using area of a house is increased according to the thicknesses of the walls. The multi-storey and high-rise steel structure house integrated system with pillars and walls in equal thickness has the advantages of reasonable layout, low cost, high prefabricating efficiency, good anti-seismic performance and capacity of increasing the using area of the house.

The invention discloses a stud welding mixed connection node of a rectangular concrete filled steel tubular column and an H-shaped steel girder. The H-shaped steel girder comprises an upper flange, a web and a lower flange, wherein the upper flange, the web and the lower flange are formed together. The rectangular concrete filled steel tubular column comprises an upper steel tube and a lower steel tube which are vertically arranged adjacently. The node comprises an inner separating board welded to the bottom in the upper steel tube, a through separating board welded to the bottom end of the upper steel tube and a vertical connecting board welded to the side of the bottom of the upper steel tube. The top end of the lower steel tube is welded to the lower surface of the through separating board. The upper flange is opposite to the inner separating board and welded to the upper steel tube. The web is connected with the vertical connecting board through high strength bolts. The lower flange is fixedly connected with the through separating board. According to the node, stud welding mixed connection is adopted, the node can be fast installed in the position in a field, a construction period can be obviously shortened, and the assembly process is facilitated. Meanwhile, due to the arrangement of the through separating board, a girder-end plastic hinge is moved outwards, the steel girder is damaged before the node, and safety of the node is guaranteed.

The invention provides a prefabricated steel joint concrete slab-column structure and a hoisting method thereof. The prefabricated steel joint concrete slab-column structure comprises a concrete slab, concrete piles, energy dissipation support units and a plurality of deformation energy dissipation devices, wherein the bottom end of any one of the concrete piles is fixed on the ground foundation or the top end of the next concrete pile, the bottom end of any one of the concrete piles is fixed on the ground foundation or the concrete slab and arranged between every two adjacent concrete piles, and deformation joints are formed between the concrete slab at the top end and any one adjacent concrete pile; the deformation energy dissipation devices are arranged in the deformation joints and at two vertex angles of any one of the energy dissipation support unit. The steelwork joints are arranged at the joint of the concrete piles and the ground foundation or the concrete slab. Prefabrication efficiency is improved, anti-seismic function is realized, construction procedures are simplified, and construction cost is reduced.

The modularized building method for nuclear island of nuclear power plant includes: modularized designing the upstream engineering of a nuclear island of nuclear power plant to divide and/or combine multiple units in the nuclear island into connection units among multiple modules, connection units between modules and connection units between module and exterior; prefabricating module by factory producing mode; building workshop by roof-opening construction mode; mounting the prefabricated module onto preset design position of the workshop. Advantage: raised prefabrication rate and constriction quality, increased engineering speed and low building cost.

The invention discloses a prefabricated reinforced concrete shear wall convenient to install and a construction method. The prefabricated reinforced concrete shear wall comprises a concrete wall body,wherein an edge component is arranged on the side face of the concrete wall body, and longitudinal ribs vertically protrude out of the end face of the concrete wall body; a steel beam connecting piece is arranged at one end of the edge component; and the steel beam connecting piece comprises two flange plates, and a web is arranged between the two flange plates. The construction method comprisesthe following steps that stirrups and the longitudinal ribs are bound in a horizontal connecting area, supporting pieces and the steel beam connecting piece are arranged on the shear wall, and the steel beam connecting piece is fixed to anchor bolts; hidden beam steel bars and hidden beam stirrups are arranged in a vertical connecting area; hidden column longitudinal ribs are connected through longitudinal rib connectors, and the stirrups are inserted into stirrup penetrating holes; the steel beam connecting piece is connected with a steel beam; and a laminated slab or a floor support plate islaid on the steel beam, floor slab steel bars are bound, concrete is poured, and the wall body is obtained through maintenance. The prefabricated reinforced concrete shear wall has the advantages ofbeing low in manufacturing cost and good in fireproof performance.

The invention discloses a prefabricated concrete column in butting connection by steel nodes. The prefabricated concrete column comprises a prefabricated concrete column body, a first steel node positioned at one end of the prefabricated concrete column body, and a second steel node positioned at the other end of the prefabricated concrete column body, wherein the first and second steel nodes are matched. As the first steel node and the second steel node are additionally arranged at the two ends of the prefabricated concrete column body, two sections of prefabricated concrete columns can be quickly matched and connected by using a principle of mutual matching of the first and second steel nodes; and then, the matched place is fixed through electric welding, so that the butting connection between the two sections of prefabricated concrete columns can be guaranteed, the traditional scene butting wet operation of prefabricated concrete columns is prevented, and the construction efficiency is quickened. The prefabricated concrete column is simple in structure and low in cost; and after the steel nodes are used for connecting, the node stress and the node ductility are improved.

The invention discloses an assembled concrete structure construction method. According to the construction method, a reversed construction procedure is adopted for installation of a vertical component of a currently constructed floor, that is, before connection assembly of a horizontal component of the currently constructed floor, the vertical component connected to the upper portion of the horizontal component is hoisted firstly, and finally connection concrete is poured at a time to connect the horizontal component with the vertical component of the currently constructed floor into a whole. The construction method adopts the reversed construction procedure, so that construction links are reduced, and the construction period is shortened; the method is suitable for assembled concrete building construction for structure systems such as precast shear walls, composite wallboards and frameworks, and has the advantages of convenient construction, time saving, economy, environment friendliness and the like; and meanwhile, the requirement for identical performance as a cast-in-place structure is met.

The invention discloses an assembled board-column structure floor slab, a dividing method thereof, and floor slab unit components. The assembled board-column structure floor slab comprises the multiple prefabricated floor slab unit components comprising adjacent column connection board belts, or the assembled board-column structure floor slab comprises the multiple prefabricated floor slab unit components comprising the adjacent column connection board belts, and the multiple conventional prefabricated floor slab unit components. The adjacent column connection board belts in the prefabricated floor slab unit components comprising the adjacent column connection board belts are long-strip-shaped belt boards integrally stretching across every two adjacent columns. The connection line of section centroids of the two adjacent structure columns connected through each adjacent column connection board belt serves as a reference line of the adjacent column connection board belt, and the width of each adjacent column connection board belt is larger than or equal to the longest side length of the connection sides of the two adjacent structure columns connected through the adjacent column connection board belt. The adjacent column connection board belts are provided with direct-through bottom reinforcing bars in the span direction. By the adoption of the technical scheme, cost can be reduced, construction is convenient, and safety and reliability of the board-column structure of the prefabricated floor slab can be improved at the same time.

The invention discloses a modularization construction method for a nuclear power station nuclear island, comprising the following steps: a modularization design step, carrying out the modularization design on an upstream engineering design of the nuclear power station nuclear island so as to divide and/or combine a plurality of units in the nuclear power station nuclear island into a plurality of modules and connecting units among the modules and between the modules and the outside; a module prefabrication step, prefabricating each module in a workshop manufacturing manner; a workshop building step, building workshops of a nuclear island building by an open-top construction method; and a module installation step, installing the prefabricated modules at the pre-designed positions of the workshops. The invention greatly improves the prefabrication rate of workshop manufacture of the nuclear power station nuclear island engineering, improves the construction quality of the nuclear island engineering, accelerates the engineering progress and achieves the purpose of reducing the whole construction cost.

The invention relates to a shear wall composite structure, in particular to an installation method for a multi-cavity steel column shear wall composite structure building system. The installation method comprises the following steps of 1, base and supporting surface setting, 2, installing and correcting, 3, multi-cavity steel column shear wall internal concrete engineering, and 4, completing and acceptance of parts of construction of a steel structure. According to the shear wall composite structure installation method, the structure is compact, usable areas are increased, and the quality is ensured.

The invention discloses a modular construction method of a nuclear island of a nuclear power station, which comprises: a modular design step, which is to modularly design an upstream project of the nuclear island of the nuclear power station to divide a plurality of units in the nuclear island of the nuclear power station and/or combine the plurality of units to form a plurality of modules and connecting units between the modules and between the modules and the outside; a module prefabrication step, which is to prefabricate the modules in an industrial manufacturing mode; a plant building construction step, which is to construct plant buildings in the nuclear island in an open-top-method construction mode; and a module installation step, which is to install the prefabricated modules on preset design positions of the plant buildings. The method greatly increases the prefabrication rate of the industrial manufacturing of the project of the nuclear island of the nuclear power station, improves the construction quality of the project of the nuclear island, accelerates the construction process of the project and reduces overall construction cost.