2042results about "Floors" patented technology

The invention provides a construction method of a prefabricated multi-ribbed cavity floor, and belongs to the technical field of prefabricated multi-ribbed plate construction. The construction method of the prefabricated multi-ribbed cavity floor comprises the steps of full-hall scaffold building, main keel laying, overall leveling and the like. The construction method comprises the steps that S1, full-hall scaffold building is conducted, specifically, when a full-hall scaffold is built, vertical rods on the upper layer and the lower layer are required to be aligned, the vertical rods are uniformly arranged from the two sides of a cast-in-place ribbed beam, the vertical rods are arranged at the intersection positions of floor elastic bidirectional lines, and scaffold boards are laid under the vertical rods; S2, main keels are laid, specifically, when the main keels are installed, the main keels are required to be arranged in order and not to be inclined, and the two vertical rods at the intersection positions must abut against the main keels; and S3, overall leveling is conducted, specifically, after the main keels are laid, overall leveling is conducted according to control lines, and full-hall scaffold formworks are hoisted on the main keels. The cavity formworks are supported by placing the modularized cavity formworks which are machined and formed in a factory-like mode, and accurate and rapid installation of an upper plate of the prefabricated multi-ribbed plate is achieved by installing limiting square pipes.

The invention relates to the technical field of floor slab concrete, and discloses aerated concrete applied to sound insulation and heat preservation of a floor slab and a preparation method of the aerated concrete aiming at the problems that an existing sound insulation floor slab containing the aerated concrete is poor in structural stability, namely the sound insulation effect and the long-term effect of mechanical properties are poor and the like. Comprising 30-40 parts of fly ash, 25-35 parts of sand, 15-20 parts of ardealite, 10-15 parts of quick lime, 5-8 parts of silicon-aluminum porous microspheres, 3-5 parts of slaked lime, 1-2 parts of Fe3O4-polypropylene fiber and 0.2-0.5 part of aluminum powder. The preparation method of the silicon-aluminum porous microspheres comprises the following steps: mixing a silicon source, an aluminum source and a surfactant, and uniformly stirring to obtain silicon-aluminum homogenate; and adding nano titanium dioxide, carrying out ultrasonic dispersion and freeze drying, transferring into a heating furnace, and heating and calcining to obtain the silicon-aluminum porous microspheres. The supporting and strengthening effects on pores are realized through gas production reaction and the like in the material, so that the structural strength and durability of the aerated concrete are improved.

The invention discloses a prefabricated shear wall, a building module, a modular building system and an assembly method. The prefabricated shear wall comprises a wall body, at least two steel pipes and at least two bearing grooves. The wall body is used for being vertically placed, the steel pipes are embedded in the wall body, the steel pipes vertically extend and are spaced in the horizontal direction, and the steel pipes downwards extend out of the wall body by a preset length. The bearing grooves are formed in the wall body, the bearing grooves and the steel pipes are correspondingly arranged in the height direction of the wall body, the bearing grooves are located above the corresponding steel pipes, and openings of the bearing grooves face upwards and vertically extend downwards by a preset depth. The prefabricated shear wall can be prefabricated in a factory and cast-in-place, connected and fixed, operation is easy, and the building efficiency is high. The prefabricated shear wall can be stacked up and down for construction, the upper-layer wall body and the lower-layer wall body are connected through the steel pipes, compared with traditional steel bar connection, higher shear resistance is provided for a building structure, and the requirement for modular or fabricated construction of a super high-rise building can be met.

The invention provides a basement large plate structure steel plate overlapping reinforcing structure and a construction method, and relates to the field of structural engineering.The basement large plate structure steel plate overlapping reinforcing structure comprises a large plate structure plate reinforcing structure which is connected to the lower portion of an original concrete plate and located in a large plate structure plate reinforcing area. The large plate structure plate reinforcing structure comprises a prefabricated newly-added concrete structure which is prefabricated and poured on the upper portion of a reinforcing steel plate, and a notch is reserved in the upper end of the prefabricated newly-added concrete structure; the reinforcing steel plate is arranged on the lower portion of the prefabricated newly-added concrete structure, and interface connection between the reinforcing steel plate and the prefabricated newly-added concrete structure is further achieved through the shear connector. The connecting steel bars are arranged on the reinforcing steel plates; the mortar layer is arranged on the upper surface of the convex part of the prefabricated newly-added concrete structure; the cast-in-place newly-added concrete is arranged at the notch; and the tensile steel bars are partially embedded in the original concrete slab and are partially embedded in the cast-in-place newly-added concrete. The original large plate structure can be reinforced conveniently, quickly, economically and reasonably, the bearing capacity of the structure is improved, and the durability of the structure is enhanced.

A wall fastener assembly for retaining an attachment such as a girt alongside or near a wall includes an elongated shank that provides space for at least one intermediate wall layer between the girt and a supportive member such as a stud. A center bore extends through the wall fastener assembly, and may receive a fastener for securing the wall fastener assembly to the wall. Once the wall fastener assembly is secured to the wall, a proximally-located flange and a distal end of the shank bottom-out on different surfaces to ensure the attachment is properly mounted to the wall, and a distally-located sealing portion engages with an intermediate wall layer to form a fluid barrier within the wall.

The application relates to the technical field of building engineering, in particular to a mixed lateral force resisting structure system of a residential building, which comprises a transverse support system, a vertical support system and a connecting mechanism, the transverse support system comprises frame beams and full-rib prefabricated floors connected with each other, the frame beams are arranged along the outer edges of the full-rib prefabricated floors; the vertical support system comprises flat columns and composite shear walls, the flat columns are connected with each other at the bottom of the full-rib prefabricated floors, and the frame beams and the full-rib prefabricated floors are both connected with the composite shear walls; the connecting mechanism is used for connecting the transverse support system and the vertical support system. The mixed lateral force resisting structure system of the residential building has the technical effects of improving the bearing capacity and stability of the mixed lateral force resisting structure system of the residential building, facilitating construction and wiring and the like.

The invention discloses a steel structure truss steel plate laminated slab pouring platform and a construction method, and relates to the technical field of laminated slab pouring construction. The steel structure truss steel plate laminated slab pouring platform comprises a construction platform support which is formed by connecting support transverse rods, support longitudinal rods, support vertical rods and support inclined rods in an inserted mode; the two telescopic support transverse rods and the two support longitudinal rods are connected in an inserted mode to form a rectangular plane frame, and a stable structure which is 30 cm higher than a floor slab is formed. According to the construction platform support, a stable structure is formed through modular inserting connection, the stable structure is erected on a steel beam of the layer, a bent frame does not need to be erected from the bottom layer, and the problems that a traditional bent frame is small in supporting construction space, cross construction is affected, and an overhanging part cannot be erected are solved; the bolts are adjusted to tension the tie bars to enable the truss steel plates to generate preset inverted arches, load deformation during pouring is counteracted, collapse risks caused by non-support pouring are avoided, the problems of steel bar deformation, node damage and the like caused by direct treading on the truss steel plates by constructors are avoided, and the quality and rigidity of floors are guaranteed.

A containerized, transportable, pre-engineered, pre-fabricated, pre-assembled, adjustable, structural module and structural module system and method is disclosed, having one or more beams to provide desired construction dimensions; and a first beam of the one or more beams, the first beam having deflection reduction properties. The structural module is not supported by shoring when the structural fixture is placed for construction. The structural modules may be expanded and contracted to vary the height, length, and width of the structural module based on building specifications or desired construction dimensions. A second beam having deflection reduction properties has the same orientation as the first beam when the structural module is placed for construction. One or more sheets are affixed to at least one of the one or more beams, wherein the one or more sheets provide a surface for concrete or building material to be poured on the one or more sheets.

The invention discloses a prefabricated heat preservation groove type plate floor slab system of an assembly type steel structure trestle, and relates to the technical field of groove type prefabricated heat preservation floor slabs, the prefabricated heat preservation groove type plate floor slab system comprises an anti-skid face plate and a heat preservation bearing mechanism, the heat preservation bearing mechanism is arranged at the bottom of the anti-skid face plate, the heat preservation bearing mechanism comprises a plurality of sealing plates, and the sealing plates are arranged in the anti-skid face plate. The multiple sealing plates are arranged and located at the bottom of the anti-skid panel, multiple second supporting blocks are arranged at the bottoms of the sealing plates, groove-shaped plates are arranged on the outer sides of the multiple second supporting blocks, structural blocks are integrally formed through pouring and extruding, reinforcing strips are arranged on the inner walls of the structural blocks, and the structural blocks and annular hoops form a two-way constraint combined framework which can bear bending moment and shearing force; therefore, the bending resistance, the shearing resistance, the torsional rigidity and the overall bearing capacity of the plate body are improved on the premise that heat preservation is not affected on the whole, the engineering problems are avoided, and normal construction work and construction time are maintained.

The invention relates to a truss-rib-free laminated slab and a string truss supporting device thereof, and belongs to the technical field of building structure engineering.The laminated slab comprises a prefabricated bottom plate, Y-shaped shear keys, concrete ribbed beams and ribbed bolt sleeves, traditional truss steel bars are omitted, innovative construction of the Y-shaped shear keys and the ribbed bolt sleeves is adopted, the steel consumption is remarkably reduced, and the cost is reduced. And meanwhile, pre-arching control over the prefabricated bottom plate is achieved through the string truss supporting device, and the construction efficiency and the environmental protection performance are improved. The device is designed to be three-point supporting or four-point supporting according to the span of the prefabricated bottom plate, is rapidly assembled through bolts and can be repeatedly used, and the construction cost is reduced. On the premise that the bearing performance of the structure is guaranteed, steel is saved by about 20%, the dead weight of the structure is reduced, the construction efficiency is improved, and green construction and sustainable development are achieved.

One illustrative embodiment of a tile & support structure may be configured to secure the position of a tile in a generally vertical configuration, such as the riser of a step, as a border around a portion of a deck, a building and / or wall façade, ventilated façade, interior or exterior wall covering, or other generally vertical surface. The support structure may be formed with a spine having at least one rail extending outward from a distal end thereof. The spine and rail(s) may be configured to secure one or more tiles, which tiles may be formed with a groove on at least one edge thereof, and wherein one or more rails may be positioned within the groove.

A sustainable, prefabricated building system, including prefabricated wall panels, load bearing beams, and prefabricated roof panels, and methods of assembly are presented herein. In one aspect, a prefabricated building assembly includes a number of prefabricated wall panel subassemblies mounted to a concrete foundation with a desired offset distance between the bottom of each prefabricated wall panel assembly and the foundation. Each prefabricated wall panel includes a metal base angle subframe coupled to structural wood subassembly. In another aspect, a metal base angle subframe includes end caps welded to each end of the structural angle to facilitate weather proofing and isolation of the wall panel assembly from the ground. In some embodiments, a wall panel subassembly includes any of an interior facing finishing layer, one or more utility chases, a weather resistive membrane, an insulation layer, one or more flashing elements, and an exterior finishing layer.

To support design of a deck slab considering a special load according to an individual, concrete setting condition acting on a deck slab in a construction phase of a building.SOLUTION: A method for designing a deck slab 1 includes: acquiring first arithmetic information 112A, second arithmetic information 112B, third arithmetic information 112C, fourth arithmetic information 112D, fifth arithmetic information 112E, sixth arithmetic information 112F, and determination information 112H; calculating, on the basis of the pieces of information, an index indicating cross-sectional performance of the deck slab 1, a uniformly distributed load acting on the deck slab 1, a special load acting on the deck slab 1, an effective width of the deck slab 1, and a load data pair; and calculating the structure of the deck slab 1, and determining whether a result of the calculation is equal to or less than a set reference value.SELECTED DRAWING: Figure 1

The invention relates to a full-life-cycle indoor variable space building system. The full-life-cycle indoor variable space building system comprises a novel structure system and a building space layout. The novel structural system comprises a core tube, steel-concrete composite structural floors are connected to the two sides of the core tube, each steel-concrete composite structural floor is provided with a floor structural unit and a hidden beam frame for supporting the floor structural unit, the hidden beam frames and the floor structural units form an integrated structure by pouring concrete, and the hidden beam frames are connected with the core tube. The hidden beam frame is connected with a plurality of frame supporting columns, and the frame supporting columns are separated from the outer wall and the separating wall. The building space layout comprises the steps that a water utilization space is centrally arranged on one side of a living space, a large-space non-water utilization space is arranged on the other side of the living space, a vestibule backcourtyard and an equipment platform are arranged on the outer side of the outer wall of the centralized water utilization space, and a shared facility tube well is arranged. According to the invention, global variation of the living room space, the water utilization space and the balcony space in the whole life cycle of families and residences is realized.

The invention relates to a receiving structure (1) which is intended for casting into a matrix material and has at least one receiving element (4), which projects out of the receiving structure (1) in such a way that it can project into the matrix material. According to the invention, the receiving element (4) has in its interior a receiving space (6) which has an opening (10) facing the surface (94) of the component (90), through which opening (10) a functional module (60, 65, 70, 75, 80, 82, 84, 86, 88) can be guided for insertion into the receiving space (6), wherein the receiving space (6) is universally designed for receiving and connecting each of the functional modules (60, 65, 70, 75, 80, 82, 84, 86, 88, 89), wherein at least one position-securing element (40) is provided for securing the position of reinforcement (96) and substantially predetermines the outer shape of the component (90).The invention further relates to a component (90) comprising a textile reinforcement (96), a matrix material, and conduits (16) for the passage of electricity and / or fluids. According to the invention, a receiving structure (1) comprising receiving elements (4) is embedded in the matrix material and is connected to the textile reinforcement (96) and / or the conduits (16) via position-securing elements (40), wherein the textile reinforcement (96) is aligned in a load-dependent manner with respect to the receiving elements (4), and the receiving elements (4) of the receiving structure (1) are designed in such a way that an influence on the load-bearing behavior of the produced component (90) is minimized.The invention also relates to a method of producing a device with the receiving structure (1).

The application discloses an assembled light steel-bamboo combined truss floor structure, which comprises a concrete floor slab and a combined truss structure, wherein the concrete floor slab is fixed to the top of the combined truss structure; the combined truss structure comprises main trusses and secondary trusses, a plurality of the main trusses are arranged in parallel at equal intervals, and the secondary trusses are spliced between two adjacent main trusses; and the main trusses and the secondary trusses are both composed of a plurality of steel sleeve assemblies spliced with original bamboo rods. According to the application, the truss of the floor structure is firstly divided into a plurality of main trusses and secondary trusses, the complete combined truss structure is formed by splicing the main trusses and the secondary trusses to provide a place for the assembly of the floor slab, and the combined truss structure is built by combining steel and original bamboo, so that the weight of the combined truss structure can be effectively reduced, the construction difficulty is lowered, and the assembly quality is improved.

The utility model provides a prefabricated assembly type notch plate connecting joint based on a concrete modular integrated building. The prefabricated assembly type notch plate connecting joint comprises a first prefabricated floor slab and a second prefabricated floor slab which are both provided with notches. A transverse main reinforcement of the first prefabricated floor extends out of the left side face towards the left end to form a first connection reinforcement. The stirrups at the notches form connection reinforcing steel bars II; the cross section of the prefabricated floor slab II is L-shaped; the right end of a transverse main reinforcement of the second prefabricated floor extends out of the right side face to form a third connection reinforcement, and a reserved L-shaped notch is formed in the splicing position of the first prefabricated floor and the second prefabricated floor; and through post-pouring of the L-shaped notches, mutual consolidation of the first prefabricated floor slab and the second prefabricated floor slab is achieved, so that the structure has good integrity and anti-seismic performance. According to the MIC box body structure, the L-shaped notches are reserved between the prefabricated floor slabs of the box body, and the connecting steel bars are in lap joint at the notches, so that reliable connection is formed between the two prefabricated floor slabs and the MIC box body through post-pouring concrete at the notches, and the structure has good integrity and excellent anti-seismic performance.

The invention relates to the technical field of simulation calculation, in particular to a simulation calculation method of a U-shaped steel-encased-concrete composite beam, which comprises the following steps: S1, establishing a two-parameter interface equivalent stiffness model of the U-shaped steel-encased-concrete composite beam with a rear anchor bolt; s2, solution and response extraction; s3, calculating a slip residual error and interface energy, and judging whether a target slip feature is met or not according to a double-convergence criterion; if the convergence requirement is not met, adaptively updating the interface parameters and returning to S2 for repeated solution, and if the convergence criterion is met, applying the converged interface rigidity parameters to design feedback of pretightening force selection of the rear anchor bolts and anchor bolt spacing and node construction of the rear anchor bolts. According to the method, the two-parameter interface equivalent stiffness model and the adaptive algorithm based on the slip residual error enable the interface normal stiffness and the interface tangential stiffness to be automatically converged to the target slip characteristic, manual parameter adjustment is avoided, the simulation stability and the calculation precision are improved, and integration of composite beam structure design and simulation analysis is achieved.

The invention discloses a dense column type PC component which comprises a first concrete layer, a second concrete layer and dense columns and is characterized in that the dense columns are arranged between the first concrete layer and the second concrete layer, and the first concrete layer, the dense columns and the second concrete layer are formed through one-time pouring and fixedly connected into a whole; the dense column is composed of a plurality of columnar concrete structural bodies, and the columnar concrete structural bodies are arranged independently or two or more columnar concrete structural bodies are connected with each other. A dense column connection mode is adopted, the two concrete layers form an organic whole, the using amount of concrete is remarkably reduced, the unit cost of PC components is reduced, the floor manufacturing cost can be saved by 15% or above through estimation, the construction period can be shortened, the cost of secondary machining and the like can be omitted, and the whole project manufacturing cost can be saved by 5% or above.

A ventilation drainage support frame includes a large-span structure of the frame body formed by longitudinal load-bearing beams and transverse load-bearing beams and a drainage frame formed by transverse drainage rods and longitudinal drainage rods arranged in a rectangular grid. The transverse drainage rods form first channels. The longitudinal drainage rods are positioned above the transverse drainage rods and form second channels. The drainage frame could fix plate bodies. Spaces between the plate bodies are aligned with the first channel and the second channel to facilitate drainage. The longitudinal drainage rods are relatively higher than the transverse drainage rods. Two opposite edges of the plate body abut against the abutted plates of the two longitudinal drainage rods, and the other two opposite edges near the transverse drainage rods are spaced apart by at least one gap, wherein the gap is formed by the height difference between the transverse drainage rods and the longitudinal drainage rods.

To provide a hollow form for a precast segment girder and a manufacturing method of the precast segment girder, which can efficiently manufacture a cross section reverse U-shaped precast segment girder capable of easily recognizing aging degradation by visual inspection, a static image, a moving image or the like.SOLUTION: A hollow form 100 for a precast segment girder is for forming a hollow part (21) of a cross section reverse U-shaped precast segment girder (2) where an opening groove (22) is formed by opening a lower part of the hollow part (21) like a groove. The hollow form 100 is partitioned into multiple narrower width pieces than the width of the opening groove (22), and is constituted to be able to remove a form by extracting each piece among the multiple pieces of the hollow form 100 from the opening groove (22) after concrete placing.SELECTED DRAWING: Figure 6

The present relates to a device being used in modular building construction comprising at least one flat load support comprising a first main face and a second main face, at least one elongated load support designed for being coupled with said flat load support. The device is characterized in that said flat load support comprises an array of transverse openings extending through the thickness of the flat load support. The flat load support is arranged for fastening said flat load support with said elongated load support at any position corresponding to one of said opening in a reversible manner and to any position between said openings in a reversible manner. Each flat load support comprises reversible lateral connection means and / or reversible transversal connection means for coupling flat load supports in a reversible manner. The flat load support and the elongated load support are arranged for being detachably assembled to provide the modular, reversible, and / or versatile building construction. The invention further relates to a modular construction building based on said device and to a method using said device.

The invention discloses a prestressed laminated slab as well as a manufacturing method and a using method thereof, and belongs to the technical field of constructional engineering. The prestressed laminated slab comprises a transverse pipeline, a prefabricated concrete bottom plate, reinforcing ribs, longitudinal prestressed tendons and transversely distributed steel bars, the transverse pipelines are arranged at intervals in the first direction, are partially embedded in the prefabricated concrete bottom plate and are parallel to the second direction; longitudinal prestressed tendons and transverse distributed steel bars are arranged in the prefabricated concrete bottom plate. The reinforcing ribs are arranged at intervals in the first direction, and the bottoms of the reinforcing ribs are fixed to the prefabricated concrete bottom plate. The first direction is the length direction of the precast concrete bottom plate, and the second direction is the width direction and is perpendicular to the precast concrete bottom plate. The reinforcing ribs can adopt various structures such as concrete ribs and steel pipe trusses, and light material blocks are arranged on the prefabricated concrete bottom plate and arranged in an area defined by the reinforcing ribs and the transverse pipelines. The manufacturing method comprises the following steps: cleaning a mold table, assembling the mold, distributing the reinforcements, tensioning, fixing the pipeline and the reinforcing ribs, pouring, maintaining and the like. During use, the two-way prestressed floor slab is formed through hoisting, pipeline connection, reinforcement, reinforcement penetrating, pouring, tensioning and grouting. The problems that an existing laminated slab is poor in stress performance, prone to cracking, insufficient in bonding strength and the like are solved, bidirectional prestress design, consistent bidirectional rigidity of a floor system and bidirectional force transmission performance are achieved, the integrality and crack resistance of a floor slab are improved, the self weight is reduced, the steel consumption is reduced, the construction process is simplified, and the laminated slab is suitable for large-span and heavy-load building scenes.

To provide a refrigeration warehouse structure which can shorten a beam lower dimension, while securing heat insulation performance between a first room and a second room adjacent to each other and having difference in preset temperatures in the rooms.SOLUTION: A step part 4c is provided at a partition position between a slab 4a of a first room RA and a slab 4b of a second room RB positioned below a partition wall 2 for partitioning the first room RA and the second room RB, and in a recessed part of the slab 4b of the second room RB which is recessed with respect to the slab 4a of the first room RA, a lower end part of a wall heat insulation material 2a, a floor heat insulation material 9 and a presser material 10 are arranged. In a first composite beam 3a which is provided at the step part 4c, an upper surface of a first steel beam 7a is made to contact a lower surface of the slab 4a, and a stud 8 provided on the upper surface of the first steel beam 7a is buried in the slab 4a. In a second composite beam 3b which is provided in the second room RB, an upper part of a second steel beam 7b is buried in the slab 4b, and the stud 8 provided at the upper part of the second steel beam 7b is buried in the slab 4b.SELECTED DRAWING: Figure 2

The utility model discloses a laminated slab strip reinforcing tool which comprises two laminated slab bodies, an upper reinforcing plate is movably arranged above the two laminated slab bodies, a lower reinforcing plate is arranged below the two laminated slab bodies, and two reinforcing assemblies are arranged between the upper reinforcing plate and the lower reinforcing plate. The reinforcing assembly comprises a rectangular plate, a threaded rod, a connecting rod, a limiting block, an inner threaded cylinder, a PVC pipe, a connecting block and a bearing, the threaded rod is fixedly installed on the lower surface of the upper reinforcing plate, the outer side of the threaded rod is movably sleeved with the PVC pipe, the top end of the PVC pipe is fixedly connected with the lower surface of the upper reinforcing plate, and the top end of the PVC pipe is fixedly connected with the lower surface of the upper reinforcing plate. According to the device, the upper reinforcing plate and the lower reinforcing plate can be conveniently and rapidly reinforced and disassembled through the arranged inner threaded cylinder and the threaded rod, the position of the inner threaded cylinder can be conveniently limited through the arranged bearing, the arranged connecting block and the arranged connecting rod, and the phenomenon that the inner threaded cylinder is lost is effectively avoided.

The invention discloses a building component and a building structure, and relates to the technical field of buildings. Wherein a cavity is limited in the framework, and a plurality of communicating holes capable of communicating with the cavity are formed in the cavity wall of the framework; and the concrete body covers the periphery of the framework and is filled in the cavity. The excellent compression resistance of the concrete body can be used for bearing the load of a pressure area, meanwhile, restraining force can be generated on the framework, local yielding of the framework is prevented, the fireproof and anti-corrosion effects can be achieved, the framework can bear tensile force to make up for the tensile weakness of the concrete body, shear force can be borne, ductility is improved, and the service life of the concrete body is prolonged. And the bearing capacity and the stability of the building component are improved. Besides, the mechanical occlusal force between the framework and the concrete body can be increased through the communicating holes, interface slippage and cracking are effectively avoided, and the cooperative work capacity and durability of building components under long-term loads are guaranteed.

The application discloses a floor support structure, which comprises a floor and a support beam or wall body arranged at the periphery of the floor, support members are symmetrically arranged on opposite sides of the support beam or wall body, and a tensioning connector is arranged on the support beam / wall body and the support member; a pre-jacking driving structure is arranged on one side of the support member facing the support beam / wall body, and a jacking part for jacking the floor is arranged on the top of the support member; when the tensioning connector is subjected to a tensioning force, the support member is driven by the pre-jacking driving structure to be upwardly tilted away from the end of the support beam / wall body, so that the jacking part actively jacks the floor, and an additional stress support is formed at the bottom of the floor. Through the active pre-jacking mechanism combining the tensioning and geometric conversion, the stress lag problem of the traditional passive reinforcement technology is solved, the active unloading and synchronous stress of the original floor are realized, and the reinforcement efficiency and the bearing capacity improvement range are improved. The structure does not need to rely on structural bonding, has no special requirements on the concrete strength and surface quality of the original floor, and has a wider application range.

To verify a hooking margin of an end of a deck plate easily even after the deck plate is placed on a beam without performing a work for marking a placement position of the deck plate on the beam.SOLUTION: A drilling device (1) of a deck plate (D) placed on a beam (B) comprises a positioning part (2) abutted on an end of the deck plate (D) and determining a reference position of drilling, a drilling part (4) for drilling a hole penetrating from a front surface to a back surface of the deck plate (d), a support part (3) for supporting the drilling part (4) and a receiving part (5) provided at a position opposite to a tip of the drilling part (4) and inserted between the beam (B) and the deck plate (D).SELECTED DRAWING: Figure 1