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3994 results about "Floor slab" patented technology

Assembly connecting structure and assembly connecting method of assembled concrete frame and shear wall combination

The invention relates to the field of assembled concrete structures, in particular to an assembly connecting structure and an assembly connecting method of an assembled concrete frame and shear wall combination. A cast-in-place strip is disposed between precast columns and precast shear walls to connect column-wall embedded rebars. Vertical through holes are reserved in a precast node-precast beam integrated component to achieve communicated connection of vertical rebars for the upper and lower columns and the upper and lower shear walls. Embedded steel sleeves at the lower ends of the precast columns and the precast shear walls are mutually embedded with projecting rebar segments extending up out of the lower columns and the lower walls, and are integrated with the lower columns and the lower walls through cast mortar. The projecting straight rebars at the upper ends of the precast columns and the precast walls penetrate through the through holes reserved in the precast node-precast beam integrated component and protrude a floor slab, and the precast columns and the precast nodes are firmly integrated with the precast shear walls precast beams by cast mortar. Wet operations such as in-place casting of concrete are reduced to the maximum extent, building quality is improved, construction period is shortened, and energy conservation and emission reduction are achieved.
Owner:SHENYANG JIANZHU UNIVERSITY

Construction method for reinforced concrete prefabricated house

The invention provides a construction method for a reinforced concrete prefabricated house. The method comprises the following steps of constructing a foundation; mounting prefabricated wallboards; casting in situ T-shaped, L-shaped and inline vertical heel posts; pouring micro-expansion mortar into vertical steel tie preformed holes in the upper and lower ends of the prefabricated wallboards; mounting reinforced concrete prefabricated superimposed beams; mounting reinforced concrete prefabricated stairs and flat stepping plates; mounting prefabricated superimposed floor slabs on the prefabricated superimposed beams; welding and binding corresponding reinforcements exposed from the prefabricated superimposed floor slabs, the upper ends of the prefabricated superimposed beams and the prefabricated wallboards into a whole, and inserting vertical anchor bars for fixing the upper and lower end parts of the prefabricated superimposed beams and the wallboards, and casting self-compacting concrete on the upper parts of the prefabricated superimposed floor slabs. A 100m-high building can be constructed in an 8 earthquake fortification region such as Beijing by sequential and cyclic construction to a design top layer from bottom to top. According to the method, a technical index of building energy efficiency of 75 percent can be achieved, and the development of a prefabricated house construction technology can be accelerated.
Owner:洪都建设集团有限公司

Clamp for longitudinal beam of rear floor slab of automobile

The invention discloses a clamp for of a longitudinal beam of a rear floor slab of an automobile, comprising support legs and a support table fixed on the support legs, wherein a sliding and clamping device and a plurality of positioning and clamping devices are arranged on the support table, wherein the sliding and clamping device is used for fixing parts to be welded on the longitudinal beam of the rear floor slab; the positioning and clamping devices are used for fixing the longitudinal beam of the rear floor slab and the parts to be welded on the longitudinal beam of the rear floor slab; each positioning and clamping device comprises a first angle seat, a fist template fixedly connected with the first angle seat and a clamping arm which is rotationally matched with the first template; first positioning pins which are matched with mounting hole sites on the longitudinal beam of the rear floor slab are arranged on the at least one first angle seat in the positioning and clamping device; the sliding and clamping device comprises a second angle seat and a second template which is fixedly connected with the second angle seat; and second positioning pins matched with the mounting hole sites of the parts to be welded on the longitudinal beam of the rear floor slab are arranged on the second template. According to the clamp, clamping and welding the longitudinal beam of the rear floor slab of the automobile can be realized, the positioning and welding the longitudinal beam of the rear floor slab of the automobile are effectively solved and the welded consistency is ensured.
Owner:ZHEJIANG JINGANG AUTOMOBILE +1

Integrally fabricated box-shaped multi-ribbed composite floor

The invention relates to an integrally fabricated box-shaped multi-ribbed composite floor, and belongs to a prefabricated concrete structural component. The integrally fabricated box-shaped multi-ribbed composite floor is characterized in that the composite floor mainly comprises bottom transverse reinforcement bars, bottom linkage reinforcement bars, lower ribbed beam longitudinal ribs, ribbed beam stirrups, bottom longitudinal reinforcement bars, shutterings, truss ribs, flanges, top transverse reinforcement bars, wedge-shaped grooves and a concrete layer, wherein the bottom linkage reinforcement bars, the bottom transverse reinforcement bars, the lower ribbed beam longitudinal ribs, the bottom longitudinal reinforcement bars, the ribbed beam stirrups, the top transverse reinforcement bars and the truss ribs form a steel reinforcement framework of the composite floor; the concrete layer is poured with a conventional concrete pouring method, the flanges are arranged at the bottoms of the front side and the rear side of a concrete slab body, the connecting position of two composite floors forms a U-shaped groove by the flanges, and crack pouring of post-poured concrete is facilitated; and the wedge-shaped grooves are formed in the front side part and the rear side part of the concrete slab body at intervals respectively, the wedge-shaped grooves between every two adjacent composite floors form shear keys, and the shearing resistance between the composite floors is increased.
Owner:CHINA MCC17 GRP

Pre-stressing-force fabricated concrete-frame-joint connecting structure and construction method thereof

The invention relates to the technical field of fabricated concrete frame structures, and discloses a pre-stressing-force fabricated concrete-frame-joint connecting structure and a construction method thereof. The pre-stressing-force fabricated concrete-frame-joint connecting structure comprises a prefabricated concrete column, a prefabricated concrete superposed beam, a composite floor slab, a post-tensioned pre-stressing tendon, an anti-bending and energy-consuming reinforcing steel bar and a shear-resistant and high-strength reinforcing steel bar, wherein the post-tensioned pre-stressing tendon, the anti-bending and energy-consuming reinforcing steel bar and the shear-resistant and high-strength reinforcing steel bar are connected with the prefabricated concrete column and the prefabricated concrete superposed beam. A beam post-pour layer of the prefabricated concrete superposed beam and a slab post-pour layer of the composite floor slab are poured integrally, the inner portion of a beam column seam between the prefabricated concrete superposed beam and the prefabricated concrete column is filled with high-strength crack-pouring binding materials, the anti-bending and energy-consuming reinforcing steel bar and the shear-resistant and high-strength reinforcing steel bar are laid in the beam post-pour layer of the upper portion of the prefabricated concrete superposed beam, and the anti-bending and energy-consuming reinforcing steel bar is located above the shear-resistant and high-strength reinforcing steel bar. According to the pre-stressing-force fabricated concrete-frame-joint connecting structure and the construction method thereof, efficient construction can be achieved, the anti-seismic property and the progressive-collapse-resistant capability are good, and post-earthquake repairing is facilitated.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1

Mixed steel-concrete composite frame structure

ActiveCN101581115AEfficient use ofImprove structural fire resistanceBuilding constructionsFloor slabReinforced concrete
The invention discloses a mixed steel-concrete composite frame structure, belonging to the technical field of engineering structure. The frame structure comprises a composite column of reinforced special shaped steep pipe concrete, a composite beam of concrete-steel pipe partially filled lightweight aggregate concrete and a reinforced concrete floor; wherein, the composite column of reinforced special shaped steep pipe concrete comprises a steel pipe of a special shaped column, a longitudinal bar of the column, stirrup of the column, concrete outside the steel pipe of the column and core concrete inside the steel pipe of the column; the composite beam of concrete-steel pipe partially filled lightweight aggregate concrete comprises a steel pipe of the beam, an inner separator, a longitudinal bar of the beam, stirrup of the beam and concrete outside the steel pipe of the beam; the space formed by the steel pipes of the beam, which are positioned on the lower part of the steel pipe at the end of the beam and on the upper part of the steel pipe on the midspan of beam, and the inner separator is filled with the core lightweight aggregate concrete in the steel pipe of the beam. The frame structure of the invention has excellent fire and shock resistance and relatively light dead load, can be used in building structures such as residence and is convenient for effective use of building space.
Owner:TSINGHUA UNIV

Column-through assembled prestressed concrete frame system and construction method thereof

The invention discloses a column-through assembled prestressed concrete frame system and a construction method thereof. The system comprises a foundation, a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a superimposed floor slab and an external hung prefabricated wallboard, wherein a column prestressed duct is formed in the prefabricated reinforced concrete column; a beam prestressed duct is formed in the prefabricated reinforced concrete beam; post-tensioned unbonded prestressed tendons are penetrated into the beam prestressed duct and the column prestressed duct; energy-dissipation steel bars are anchored between the prefabricated reinforced concrete column and the superimposed floor slab. The structure provided by the invention has a good seismic performance; the lower part of a beam-column joint is subjected to unreinforced connection so that the structure is simple; the post-tensioned unbonded prestressed tendons and a replaceable column base energy dissipater are used so that the structure is less damaged and easy to be repaired in the earthquake; a construction manner of using the prefabricated superimposed floor slab and prestressed assembly makes site construction convenient and rapid and saves a lot of supports compared with a traditional prefabricated assembly structure; the column-through assembled prestressed concrete frame system provided by the invention is used in combination with lateral supports, shear walls and other lateral force resisting members, and is applicable to most high-rise public buildings.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION

Quick construction method for high-rise buildings

The invention discloses a quick construction method for high-rise buildings, which includes: hoisting an integral lifting device; positioning all pneumatic pouring mould opening and closing devices; assembling single cradle units integrally to form an integrated mould cradle assembly while fixedly mounting the pneumatic pouring mould opening and closing devices below the integrated mould cradle assembly; starting all four-screw lifters to jack the integrated mould cradle assembly; hoisting reinforcement cages of walls and beams of a floor; falling the integrated mould cradle assembly, driving the pneumatic pouring mould opening and closing devices to close the moulds horizontally; pouring concrete and then opening the moulds after concrete is solidified; lifting the integrated mould cradle assembly upwards; hoisting floor slabs, prefabricated boards for superposed parts of balconies, prefabricated stairs and prefabricated bay windows; laying cast-in-situ reinforcing meshes of the superposed floor slabs and casting concrete on the superposed floor slabs; repeating the above steps until completing building of all floors; and finally removing the integrated mould cradle assembly and a lifting support. The quick construction method for the high-rise buildings has the advantages of quick construction, high construction quality, safety and reliability in construction and low construction cost.
Owner:DONGGUAN HUANAN JUNYE MACHINERY MFG CO LTD

Unilateral formwork erecting system of cast-in-site concrete arc outer wall body and construction method thereof

The invention discloses a unilateral formwork erecting system of a cast-in-site concrete arc outer wall body and a construction method thereof. The construction method comprises the following construction steps: 1. setting an embedded part on a concrete floor slab below an arc wall body which is not cast; 2. pre-splicing an arc wall body formwork; 3. pre-splicing and mounting a unilateral support frame on site and fastening the unilateral support frame and the embedded part; 4. connecting the unilateral support frame and the arc wall body formwork; 5. setting up a scaffold required by the unilateral support frame; 6. adjusting, reinforcing and checking various parts; 7. casting arc wall body concrete between the arc wall body formwork and an arc outer wall body of an adjacent building; and 8. detaching the formwork after the concrete strength meets the specification requirement. The invention has the advantages of greatly shortening the construction period, saving labor force, reducing the construction cost and meeting the requirement of structural construction quality and is particularly applicable for wall body construction of automobile ramps, stadiums and other large-scale public buildings with arc structures.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Industrialized assembled multi-story high-rise steel structure centrally-braced system

The invention relates to an industrialized assembled multi-story high-rise steel structure centrally-braced system, belonging to the field of buildings. The industrialized assembled multi-story high-rise steel structure centrally-braced system comprises steel structure main body slab racks, bracing members and columns. Wide beams, narrow beams and slabs are integrally fabricated in a factory. The wide beams and the narrow beams are welded in the factory by using channel steel. Pipelines pass through positions between the web channel steel of the wide beams and the web channel steel of the narrow beams to form base slat racks A, base slab racks B and base slab racks C. High-strength bolts and partial welding only in the factory are adopted for parts where the base slab racks are connected with column bases and the wide beams are connected with the narrow beams. The column bases are connected with the columns through high-strength bolts and flanges. The industrialized assembled multi-story high-rise steel structure centrally-braced system has the advantages that the construction speed is fast, the structure bearing capacity is high, the lateral movement resistance is good, the strength of materials can be fully exerted, the horizontal load is effectively resisted, the structure interlayer displacement is reduced, the environmental pollution caused by welding is reduced and the cost is saved.
Owner:CHINA RAILWAY CONSTR GROUP +1

Local prestress assembly type energy-dissipating beam column joint

ActiveCN105525679AReduce wet workImprove the efficiency of on-site installationBuilding constructionsFloor slabPre stress
The invention discloses a local prestress assembly type energy-dissipating beam column joint. The beam column joint comprises a precast concrete column, a precast concrete beam, replaceable energy-dissipating bars, prestress ribs and an anchor. Prestress rib porous channels and brackets are reserved in a joint area of the precast concrete column. The precast concrete beam is a pre-tensioned prestress beam, a prestress rib porous channel is formed in the middle of the section of the beam end, and a rabbet is formed in the lower part of the beam end. The precast concrete beam is placed on the brackets and is fixed through local post-tensioned prestress ribs in a pressure welding mode, and concrete is poured on the upper surface of the precast concrete beam in a cast-in-place mode at floor height. The replaceable energy-dissipating bars are installed on the upper surface and the lower surface of the precast concrete beam, and the number, the specification and action time of the replaceable energy-dissipating bars are designed according to different seismic levels. When located on the lower surface of the precast concrete beam, the replaceable energy-dissipating bars penetrate through reserved holes in the brackets, and exposed parts are wrapped with mortar. The local prestress assembly type energy-dissipating beam column joint improves restorability of a precast concrete framework under earthquakes, energy dissipation capacity is enhanced, hierarchical shock absorption and energy dissipation are achieved, and post-seismic reparation is facilitated.
Owner:SOUTHEAST UNIV

Concrete Slab Formwork System and Its Construction Method

ActiveCN102277959AOn-site construction and assembly are simpleEasy to removeForms/shuttering/falseworksBuilding material handlingFloor slabKeel
The invention relates to a standard steel frame formwork system for concrete floor slabs and a construction method thereof. The system comprises square steel girders, steel frames, saddle girders, vertical bars and cross bars, wherein the cross bars are tied and fixed with the adjacent vertical bars by fasteners; U supports are installed on the vertical bars; the square steel girders are installed on the U supports and serve as main keels; the saddle girders are placed on the main keels; the steel frames are placed on the saddle girders and serve as secondary keels; and formworks are paved onthe steel frames. The construction method comprises the following process flows: snapping floor slab formwork erecting elevation lines; placing cross position lines of the vertical bars; installing vertical bar crossers on the cross position lines; installing the vertical bars; installing the cross bars; installing the U supports; installing the square steel girders; installing the saddle girders; installing the standard steel frames; levelling lines; paving multi-layer slabs fully; adjusting, arching and reinforcing; cleaning; inspecting and accepting; and removing the formwork. The system and the construction method have the following beneficial effects: the system has the characteristics of factory processing and tool-typed installation; and the construction method has the advantages of good stability, safety, reliability, time and labor saving, high construction speed and high turnover rate, can save lots of wood and funds, and meets the requirements for energy saving, environmental protection and economic benefits.
Owner:CHINA XINXING BAOXIN CONSTR CORP

Pile and wall integrated structure combining outer wall of basement body and guard pile

The invention belongs to the field of foundation pit supporting and underground engineering, and provides a pile and wall integrated structure combining an outer wall of a basement body and a guard pile. According to the technical scheme, a narrow space is formed between the outer wall of a basement and the guard pile, in the space, a net-hanging guniting layer, a thermal insulation layer and a flexible waterproof layer are sequentially bonded to the side face of the outer wall of the basement, a force transmission plate strip is arranged on the outer side of the outer wall of the basement, the force transmission plate strip is horizontally arranged at the position of each floor of the basement, the force transmission plate strip is perpendicular to the outer wall of the basement and horizontally inserted into the surface of the net-hanging guniting layer, a foundation slab extends to the surface of the net-hanging guniting layer, the thermal insulation layer is broken at the position where the force transmission plate strip makes contact with the foundation slab, and the flexible waterproof layer continues at the position where the force transmission plate belt makes contact with the foundation slab. According to the pile and wall integrated structure, combined action of the guard pile and the outer wall of the basement at the permanent use stage is achieved, the thickness of the outer wall of the underground structure can be reduced after consideration is given to the rigidity of the guard pile, therefore, engineering investment is saved, and resources are used reasonably.
Owner:EAST CHINA ARCHITECTURAL DESIGN & RES INST

Fastening strip and fastening network framework

ActiveCN101457572AGuaranteed pouringSolve the problem of convenient and quick fixWallsForms/shuttering/falseworksFloor slabStructural element
The invention relates to a blocking strip and a blocking net framework. The blocking strip comprises at least two strip sides, at least one of which is provided with convex teeth that are provided with breaches, the breaches are internally provided with agnails or barbs. The blocking net framework can be made by applying the blocking strip, and is formed by connecting keels, the blocking strip and a steel screen in a combining way. The keels are section steel parts and are arranged in parallel according to certain spacing; the blocking strips are vertical to the keels, arranged in parallel according to certain spacing and are fixed at one side or two sides of the keels to form a steel frame; the steel screen is distributed with a longitudinal convex rib as well as fish scales holes or meshes on the surface; the steel screen is attached to the outer surface of the steel frame, and is firmly and conveniently blocked and connected with the blocking strip. The invention solves the problems of composition and construction of a steel screen concrete member as well as the reinforcement of a steel screen concrete wall body. Meanwhile, the invention realizes large-scale and mechanized production, and is suitable for various building structural elements, especially for the structures of multilayer and high residential building wall bodies and floor slabs.
Owner:ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV +1

Fastener type self-decoration composite heat insulation high layer dwelling building module and its construction method

The invention discloses a snap-in self-ornamental composite insulated building module used by a high-rise building and a building construction method for the same. The building module mainly comprises an external walling module, an internal walling module and a clamping piece. The building construction method comprises the following steps that: a). reinforcing steel bars of a ground ring beam, a shear wall and a constructional column are bound; b). the external walling module and the internal walling module form hollow walling through the clamping piece and a draw-in gear by means of clamping, and the shear wall and the constructional column are positioned inside the hollow walling; c). wires are bound on the reinforcing steel bars to form outlines of the shear wall and the constructional column; d). concrete placement is respectively performed to form the shear wall and the constructional column; e). fire-retardant foam particles and foam concrete are used for mixed placement of the hollow walling to complete filling of the walling; f). the superface of a floor is fixed by a floor module bracket, and the steps are repeated until the building construction is completed. The building construction method can complete external decoration, internal plastering, simultaneous filling of a shear wall moulding board, a masonry and a beam moulding board at a time without arrangement of outdoor safe scaffolding, thereby the building construction method is energy-saving, high-efficiency, safe and environment-friendly.
Owner:雷现治
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