43results about How to "Increased out-of-plane stiffness" patented technology

The invention discloses a prestressed concrete superimposed sheet with steel trusses and a manufacturing method, and belongs to the technical field of architectural engineering. The prestressed concrete superimposed sheet structurally comprises prefabricated bottom plates, transverse steel bars and a superimposed layer, two sides faces, in the length direction, of each prefabricated bottom plate are inclined faces, a wedge-shaped edge joint is formed between every two adjacent prefabricated bottom plates, the wedge-shaped edge joints are filled with high-strength grouting materials, longitudinal prestress steel bars are distributed in the prefabricated bottom plates in the length direction, and the transverse distribution steel bars are arranged in the width direction. The upper portion of each prefabricated bottom plate is provided with at least one steel truss in the length direction, the transverse steel bars are arranged below the steel trusses in the width direction of the prefabricated bottom plates in a penetrating mode, the prefabricated bottom plates can be connected together, the superimposed layer is poured to the prefabricated bottom plates, and superimposed layer transverse steel bars and superimposed layer longitudinal steel bars are arranged in the superimposed layer. The prestressed concrete superimposed sheet has the advantages of being good in overall stress performance, large in application span, excellent in fireproof effect and high in factory production efficiency, enabling site operation to be easy and convenient and the like.

The invention discloses a prestressed concrete two-way laminated slab and a manufacturing method thereof, which belong to the technical field of construction engineering. Its structure includes a prefabricated bottom plate, a laminated layer and a steel truss. The trusses are connected, and the laminated layer transverse steel bars and laminated layer longitudinal steel bars are arranged inside the laminated layer. The laminated layer longitudinal steel bars are fixed on the upper surface of the steel truss. The transverse prestressed reinforcement is arranged at equal intervals, the longitudinal prestressed reinforcement is arranged at equal intervals along the length direction, the longitudinal prestressed reinforcement is located above the transverse prestressed reinforcement, and multiple steel trusses are arranged at equal intervals along the width direction on the upper part of the prefabricated floor. The invention also discloses a manufacturing method of the laminated board. The invention has the characteristics of high overall rigidity of the laminated slab, good force bearing performance, two-way force transmission mechanism, no joints on the prefabricated bottom plate, reduced on-site support and formwork consumption, and improved construction speed and the like.

The invention provides a compound mild steel damper with holes and ribs. The compound mild steel damper is mainly composed of an energy dissipation portion, rib dividing holes, in-rib holes, vertical energy dissipation ribs, horizontal energy dissipation ribs, a fixing portion, a steel base plate, angle steel, a steel beam, a herringbone support top portion, U-bar and the like. The compound mild steel damper is characterized in that the energy dissipation portion is rectangular, a plurality of rib dividing holes are arranged in the energy dissipation portion, the rib dividing holes are oval, long axes of the rib dividing holes are vertically distributed, and the energy dissipation portion is divided into a plurality of vertical energy dissipation ribs. The in-rib holes are arranged in each vertical energy dissipation rib, the in-rib holes are oval, long axes of the rib dividing holes are horizontally distributed, and one vertical energy dissipation rib is divided into the plurality of vertical energy dissipation ribs and the plurality of horizontal energy dissipation ribs through the plurality of in-rib holes. The compound mild steel damper has the advantages of being big in initial stiffness, free of obvious stress concentration, big in steel surrender area, good in energy dissipation effect and high in steel utilization rate. A plane of the damper is big in outer stiffness, plane outer unstability of the damper is avoided before sufficient energy dissipation, and damage of the damper out of a big plane during stress is avoided. In addition, the compound mild steel damper with holes and ribs is simple in manufacture and installation and convenient to use, can be used for aseismic design of newly-built constructional engineering, and can be used for strengthening service of the existing engineering.

The invention discloses a corrugated steel plate confined concrete combination column which is a polygon tube formed by using a plurality of corrugated steel plates and a plurality of steel tubes as turning corners, wherein the corrugation directions of the corrugated steel plates are identical to the length direction of the polygon tube; and concrete is further filled into the polygon tube and the corners so as to manufacture the combination column. In addition to the excellent mechanical property of the conventional steel tube concrete, the combination column further has the following remarkable advantages that the load born by corrugated steel plate bears in the corrugation direction is small, so that the strength of the corrugated steel plate is mainly for providing annular restraint on the core concrete, then the compression bearing capacity of the core concrete is greatly improved, the compression bearing capacity of the combination column is improved to a large extent, the material is saved, and the engineering cost is reduced; the outer rigidity of the plane of the corrugated steel plate is large, and the corrugated steel plate is unlikely to bulge under the transverse expansion deformation action of the core concrete, so that the effective annual restraint of the corrugated steel plate to the core concrete is increased, and the compression bearing capacity of the combination column is further improved.

The invention discloses a novel assembled joint applicable to a monolayer triangular space grid structure. The novel assembled joint is mainly composed of five parts, namely a center joint, connecting sleeves, high-strength bolts, upper and lower cover plates and a center bolt. The center joint is composed of a center circular ring and six connecting arms in connection. The connecting sleeves are machined from steel tubes. Bolt holes are arranged in corresponding positions of the center joint, the sleeves and road pieces. During assembly, one end of each sleeve is sleeved with one connecting arm while the other end of the same is sleeved with one rectangular steel tube, the sleeves, the connecting arms and the rectangular steel tubes are connected through the high-strength bolts, bending moment and axial force of the rod pieces are transmitted through the bolts and friction and mechanical squeezing among the steel tubes, the sleeves, the connecting arms and the center ring, and the triangular space grid structure joint is formed by all the connections. The assembled joint is wide in application range, convenient for industrialized batch production, good in assembling capacity, convenient to construct, high in construction and assembly quality, capable of meeting the requirement of the monolayer space grid structure on joint bearing capacity and rigidity and broad in application prospect.

The invention discloses a precast prestresed-concrete beam-type stair and a making construction method, and belongs to the technical field of constructional engineering. The precast prestresed-concrete beam-type stair structurally comprises a beam-type stair body, an upper stair beam and a lower stair beam, wherein the upper stair beam and the lower stair beam are used for supporting the beam-typestair body; the beam-type stair body comprises a stair-section slant beam and ladder-shaped steps, the stair-section slant beam is arranged in the length direction of the beam-type stair body, the two ends of the steps are supported on the stair-section slant beam, the two ends of beam-type stair body are connected with the upper stair beam and the lower stair beam respectively, a prestresed reinforcing steel bar is arranged at the lower portion of the stair-section slant beam in the length direction, an upper common reinforcing steel bar is arranged at the upper portion of the stair-sectionslant beam in the length direction, stirrups are arranged outside the prestresed reinforcing steel bar and the upper common reinforcing steel bar in the length direction at equal intervals, the prestresed reinforcing steel bar and the upper common reinforcing steel bar are located in the stirrups, and step distribution reinforcing steel bars are arranged in the steps. The precast prestresed-concrete beam-type stair and the making construction method have the advantages of being large in application span, good in crack resistance, light in self weight, convenient to hoist and transport, excellent in earthquake resistance and the like.

The invention discloses a seawater sea-sand concrete structure with a corrugated composite pipe. The seawater sea-sand concrete structure is composed of the corrugated composite pipe (1), seawater sea-sand concrete (2) and composite ribs (3). The corrugated composite pipe (1) is formed by means of the method that an inner fiber layer (11) and an outer fiber layer (13) are adhered to the inner wall and the outer wall of a corrugated steel pipe (12) correspondingly. The corrugated composite pipe (1) is in a corrugated curve line or fold line shape in the axial direction of a component. The composite ribs (3) are arranged in the corrugated composite pipe (1) in a matched mode, the seawater sea-sand concrete (2) fully fills the inside of the cross section of the corrugated composite pipe (1), and the composite ribs (3) are arranged in the seawater sea-sand concrete (2) and wrapped with the seawater sea-sand concrete (2). According to the seawater sea-sand concrete structure with the corrugated composite pipe, the defects existing in a publicly-known steel pipe concrete structure are overcome, and the seawater sea-sand concrete structure has the advantages that the bearing capacity is high, the corrosion resistance is good, materials are easy to obtain, and sustainable development is facilitated; and meanwhile, the structure has a low manufacturing cost, maneuverability is high, energy consumption is low, environment pollution is small, and the seawater sea-sand concrete structure with the corrugated composite pipe can be suitable for ocean engineering structure construction.

The invention discloses a cast-in-place skeleton net hollow filler wall which comprises a skeleton net (1). A cast-in-place surface layer (4) and a seal surface layer (5) are arranged at outer ends of two sides of the skeleton net (1) respectively, and vertical ribs (2) and horizontal ribs (3) are sequentially arranged between the skeleton net (1) and the cast-in-place surface layer (4). According to integration of economic indicators and construction periods, the cast-in-place skeleton net hollow filler wall has an advantage over an existing air-entrapping concrete building block filler wall and a hollow internal mold metal net cement internal partition wall, has the advantages of being high in industrialized production degree and simple in site operation process, and overcomes the shortcomings in the prior art.

The invention provides a multiple arched porous metal damper, and relates to a shake controller for a building structure. The multiple arched porous metal damper comprises an energy consumption part, fixation parts, bolt holes, internal circular holes, an I-shaped sway brace and an I-shaped steel beam, wherein the energy consumption part of the damper is arched in outline, the energy consumption part is internally provided with a plurality of circular holes, and the circular holes are regularly arranged according to an arched trend. The fixation parts are rectangular, and are internally provided with the bolt holes, the fixation parts and the energy consumption part are mild and tangent to transit, two or more mild steel dampers are assembled together, the two lower fixation parts are connected with the I-shaped sway brace by virtue of the rectangular steel plate, and the upper fixation part is connected with the I-shaped steel beam. The steel material of the damper is larger in yield surface, good in energy consumption effect and high in steel material use ratio, the whole rigidity of the building structure can be increased when the damper is used under a normal status, in the earthquake, the earthquake reaction of the building structure can be reduced due to the yield energy consumption of the steel plate damper, and the building structure can be well protected.

The invention discloses a cold-bending thin-walled steel lattice column composite wall with a built-in straw grass brick. The wall comprises a composite wall skeleton formed by a cold-bending thin-walled steel lattice column and a top guide rail and a bottom guide rail, the composite wall skeleton is filled with the straw grass brick, and cover panels are fixed to both sides of the composite wallskeleton. The wall has high shear resistance and compression bearing capacity and large out-of-plane stiffness, provides convenience for the combination wall to absorb and dissipate seismic energy, has the advantages of green environmental protection, thermal insulation, sound insulation and noise reduction, and achieves structural heat insulation integration. In a low-rise and multi-story steel structure building, the strength, stiffnes and ability to absorb and dissipate the seismic energy of the structure can be significantly improved, it is convenient to manufacture and process, the wall can be prefabricated and produced in a plant, and on-site assembly and construction are achieved; waste is turned into a treasure, which can produce good social and economic benefits, help to protect the environment, promote the sustainable development of green buildings and has broad application prospects.

The invention relates to a steel-concrete composite beam structure, a building and a construction method. The structure comprises a corrugated web steel beam. A prefabricated slab is in lap joint withthe upper surface of the upper flange of the corrugated web steel beam. An edge joint is formed between every two adjacent prefabricated slabs. Concrete is poured into the edge joints. The adjacent prefabricated slabs are connected through lap joint steel bars. A post-cast layer is arranged on the upper end face of the prefabricated slab. The post-cast layer and the prefabricated slab form a composite slab structure. A profiled steel sheet is arranged in the edge joint. The bottom face of the profiled steel sheet is flush with the lower end face of the prefabricated slab so as to bear the concrete in the edge joints. According to the steel-concrete composite beam structure, the building and the construction method, the structural strength and integrality of the composite beam can be improved, meanwhile, laying of templates is reduced, the construction technique is simplified, and the construction efficiency is improved.

The invention belongs to the technical field of construction engineering, and relates to a square tube support steel silo. A basic unit is composed of two steel plates and square tube supports. Two sides of the basic unit are provided with the steel plate 1 and the steel plate 2, wherein the cross section of the steel plate 1 is in a curled edge groove shape, the square tube supports are welded onthe steel plate 1, and square holes are formed in the positions, corresponding to the square tube supports, of the steel plate 2. The curled edges of the steel plate 1 are welded to the steel plate 2, and the square tube supports welded to the steel plate 1 are welded to the steel plate 2. Concrete is poured into an empty silo formed by the steel plate 1 and the steel plate 2. The square tube supports are arranged in the middle of the two steel plates, so that the out-of-plane stiffness of the steel plates is increased; the two steel plates and the square tube supports form the through emptysilo, so that the compactness of concrete pouring can be ensured; and the basic unit can form a large-sized composite shear wall, so that steel is saved, the welding quantity is less, and the splicingefficiency is high.

The invention discloses a construction method of a novel unequal-flange steel-concrete combined corrugated web H-shaped beam. The construction method comprises the following steps that firstly, an upper flange plate, a lower flange plate, a corrugated web, a tie stirrup, concrete, a formwork and an arch-shaped clamp are provided; secondly, the upper flange plate, the lower flange plate and the corrugated web are welded to form an H-shaped steel framework, and then the tie stirrup is welded to the H-shaped steel framework; thirdly, the H-shaped steel framework is installed on a floor slab, then the formwork and the H-shaped steel framework are fixed together through the arch-shaped clamp to form a composite beam, and a pouring opening is reserved in the composite beam; and fourthly, the composite beam and the floor slab are integrally poured through the pouring opening. The construction method has the beneficial effects that the steel consumption and the welding workload are reduced, so that steel is saved, and the economic benefit is improved; construction is easy and convenient, the integrity of the beam and the floor slab is enhanced, pouring of a large number of post-pouring sections is avoided, and the construction efficiency is greatly improved.

The invention relates to a prefabricated truss type light steel frame-punching thin steel plate-foamed concrete composite wall. A concrete filled steel tube frame column, a concrete filled steel tubeframe beam and concrete filled steel tube truss ribs together form a wallboard concrete filled steel tube truss stress system, a composite wall steel skeleton is formed by the wallboard concrete filled steel tube truss stress system and a punching thin steel plate, and the integrality of a wallboard is improved. Novel light insulation material foamed concrete is used for pouring the wallboard, theprefabricated truss type light steel frame-punching thin steel plate-foamed concrete composite wall is formed after maintenance, and the composite wall can be assembled to an external structure onlyby connecting bolts. The prefabricated truss type light steel frame-punching thin steel plate-foamed concrete composite wall is integrated in heat preservation, has good bending resistance, shear capacity and out of plane stiffness, the anti-seismic property is good, meanwhile, the wallboard is manufactured in a factory and assembled on site, the common quality problems caused by site constructioncan be effectively resolved, the construction efficiency of the project is greatly improved, the amount of labor used of engineering is reduced, and the prefabricated truss type light steel frame-punching thin steel plate-foamed concrete composite wall is suitable for wide application in the structure of low-rise multi-storey rural houses in villages and towns.

The invention discloses a non-stretching bar combined laminated slab with prefabricated prestressed concrete ribs. The non-stretching bar combined laminated slab comprises a bottom plate (1), longitudinal bars (2) and transverse bars (3) are arranged in the bottom plate (1), a plurality of concrete ribs (4) are arranged on the bottom plate (1), the concrete ribs (4) are arranged in the direction of the longitudinal bars (2), a plurality of stirrups (5) are arranged in the concrete ribs (4), and the bottoms of the stirrups (5) are fixedly arranged on the transverse bars (3). According to the scheme of the non-stretching bar combined laminated slab with the prefabricated prestressed concrete ribs, the span of the bottom plate can be increased, and the production process is simplified.

The invention discloses a precast modular buckling-restrained brace bolting and welding mixed connection joint, and belongs to the field of energy dissipation and seismic reduction of a building structure. The precast modular buckling-restrained brace bolting and welding mixed connection joint comprises precast steel joint modules, buckling restrained braces, connecting high-strength bolts, fixedhigh-strength bolts and attachment welds. The buckling restrained braces are laid in the diagonal direction of frame structures formed by structural beams and structural columns. The precast steel joint modules comprise first precast steel joint modules, second precast steel joint modules, third precast steel joint modules, and fourth precast steel joint modules. The precast modular buckling-restrained brace bolting and welding mixed connection joint has the advantages that the length of the joint connection is short, the stiffness out of plane is high, the installation and construction are simple, and the post-earthquake replacement is convenient. The length of the traditional bolt connection is greatly reduced by adopting a method of assembling the four precast steel joint modules and supporting connecting sections, at the same time, the length of energy consumption sections can be increased according to the design proportion, and the energy consumption performance of the buckling restrained braces can be improved under the same engineering conditions.

The invention discloses a mounting method of a seismic isolation support. According to the mounting method, bolts are adopted for control, the construction efficiency is high, the mounting precision is high, and the phenomenon that the mechanical property of the seismic isolation support deviates greatly in all directions due to the mounting precision problem can be also avoided; a buckle type combined connecting plate is used to replace a positioning embedded plate, so that a conventional positioning embedded plate is omitted, steel can be saved, and the cost can be reduced; a concrete pouring opening reserved in the buckle type combined connecting plate is larger, so that pouring and vibrating are very convenient when concrete of a lower buttress is poured, the compactness of the lower buttress is easy to control, the construction quality of the lower buttress is guaranteed to a great extent, and potential safety hazards caused by earthquakes are reduced; and meanwhile, the out-of-plane rigidity of the buckle type combined connecting plate is large, and compared with the conventional positioning embedded plate, the buckle type combined connecting plate is not prone to deformation in the transportation process, and therefore, the support mounting precision is further guaranteed.