30results about How to "Increase out-of-plane stiffness" patented technology

The invention discloses an intersecting reinforcement profiled steel plate shear wall with broadside slotting. The profiled steel plate shear wall comprises an embedded steel plate which is arranged in a margin plate, a lengthways end plate or a crosswise end plate is arranged between the embedded steel plate and the margin frame, a gap is arranged between a margin frame column and the lengthways end plate; the embedded steel plate adopts corrugated profiled steel plate which sets the corrugation direction as a vertical direction, and two sides of the embedded steel plate are respectively connected with two profiled steel reinforcing ribs, wherein one of the two profiled steel reinforcing ribs is arranged in a direction which forms an included angle of 45 degrees with a horizontal line, and the two profiled steel reinforcing ribs are perpendicular to each other. The embedded steel plate has large vertical stiffness; the gap between the end plate and the margin frame column can not only eliminate a probable additional bending moment generated by the embedded steel plate on the margin frame column, but can also release dimension error of the broadside of the profiled steel plate; the profiled steel reinforcing ribs which are in cross arrangement restricts the relative position of the corrugated profiled steel plate in a corrugation plane; meanwhile, the profiled steel plate shear wall can be designed into a fabricated lateral force resisting component, thus realizing a sharp improvement in field assembly degree, and reducing workload in field construction.

The invention relates to the technical field of steel structure houses and public buildings, in particular to a steel-concrete combined special-shaped lattice column. The combined special-shaped lattice column provided by the present invention is composed of square steel pipe concrete column, channel steel, and strips. There are two structural types, namely type I and type II, and each has three cross-sectional forms, which are "L" type , "T" and "Ten" shapes; Bolt-assembled K-shaped strips are used for connection. The present invention overcomes the problems of inflexible structural arrangement, difficulty in factory prefabrication of components and low degree of standardization of components in the prior art, and most of the components used can be prefabricated in the factory. Prefabricated autoclaved blocks form an "intelligent" combined special-shaped lattice column integrating structure, heat preservation and sound insulation.

The invention discloses an integral casting process for a reinforced concrete wastewater tank in predrilling engineering. The integral casting process comprises the following steps of a, construction of a foundation and a bedding layer, digging a foundation pit, and casting the concrete bedding layer after determining that the foundation bearing force meets the design requirements; b, manufacturing and installation of reinforced bars, manufacturing and installing on site, wherein the overlapping length of the reinforced bars should not be less than 40 times of the diameter (mm) of each reinforced bar, and the overlapping area of the reinforced bars same in cross section should not be more than 50% of the total area; c, supporting of die plates, binding the die plates into the shapes of the bottom and the wall of a concrete tank; d, casting of concrete, after completing the construction of the reinforced bars and the die plates, carrying out the casting construction of concrete, firstly casting the bottom of the concrete tank and the wall with the height less than 1m, leveling the top of the wall of the concrete tank, and reserving no step to complete the first time of casing; casting the residual wall of the concrete tank in at least one hour after completing the first time of casting; and e, removal of the die plates, removing the die plates when the strength of the cast concrete being more than 1.2MPa. The integral casting process has the advantages that the construction time of the wastewater tank in the predrilling engineering is reduced, the construction period of the whole predrilling engineering is shortened, the condition of drilling machines not waiting for well fields is ensured, the construction seams are not reserved in the construction, and the leakage problem caused by the construction seams is avoided.

The invention discloses a hole opening square steel pipe truss profiled steel plate shear wall and a construction method. The shear wall comprises two profiled steel plates, wherein square steel pipetrusses are arranged between the two profiled steel plates and comprise chord members and web members. The profiled steel plates comprise a plurality of wave crest positions. Holes are formed in the square steel pipe trusses and correspond to the wave crest positions of the profiled steel plates. The shear wall is arranged between a frame beam and a frame column. A gap is reserved between the shear wall and the frame column. For a non-ductile reinforced concrete frame structure, the hole opening square steel pipe truss profiled steel plate shear wall is a novel reinforcement method, is a novelstructural member which is developed on the basis of a profiled steel plate shear wall and a flat steel plate combined shear wall, and has the advantages of being small in cross section size, large in side rigidity resistance, high in anti-seismic property and the like.

The invention relates to a one-way tensioned metal sheet space structure, which is used for large-span buildings, comprising: a metal sheet, which is formed by tensioning, and the metal sheet forms a space structure; One end of the cable is connected and fixed to the top of the steel columns on both sides, and the other end is connected to the metal sheet from both sides of the spatial structure span; the back cable is connected to the top of the steel column at one end, and the other end is fixed to the ground; the gable plate is set on the metal sheet At both ends, the gable panels set the gable back cable. The force-bearing structure of the present invention is designed in an integrated manner with the building envelope, and the metal sheet is stretched and formed by applying in-plane prestress. The structure system of the invention can be used for constructing a super-span temporary and permanent closed stockyard engineering structure system with a span of more than 300 meters, and has the advantages of safety, reliability, reasonable design, economical materials, simple construction and the like.

The invention discloses a method for steel-box beam erection applied in self-anchored suspension bridge. Procedures comprise that (1) the support for steel-box beam is set on bank or in no-navigation area and steel-box beam is preassembled with dividing segments on the support for steel-box beam; (2) temporary piers for steel-box beam, which satisfy waterway grade, are set in the waterway suspended by the suspension bridge; (3)preassembled steel-box beam is pushed forwards by pushing or dragging method so that the steel-box beam moves to temporary piers for steel-box beam from the support forsteel-box beam and the steel-box beam is supported by temporary piers; then the steel-box beam is preassembled in dividing segments and it is pushed or dragged continuously so that preassembled steel-box beam moves forwards and it passes through temporary piers for steel-box beam on waterway in turn to achieve the opposite bank. The invention is provided with simple construction and it can be applied in waterway with busy suspension and higher waterway grade.