48results about How to "Low steel content" patented technology

The invention provides a super-large span double-layer net rack dome construction process. The process is characterized in that computer wind tunnel simulated software is used to compute wind load of grid to replace wind tunnel test of the whole spherical shell, so that the accurate steel consumption can be worked out; according to the steel consumption in each square meter, the sizes and nodes of members are worked out; in construction, by ring-by-ring construction closing and a small standing derrick sling, small splicing units are lifted, thereby solving the problems of difficult construction and overcoming the defects of difficult construction management and high cost due to full framing construction. The process has the advantages of greatly reducing steel consumption, shortening construction period by more than 50 percent, and substantially lowering construction cost.

The invention relates to a construction process of an ultra-large-span net-frame arch-shaped shed type storage silo, which is characterized by comprising: obtaining dimensions of node rods of a net frame via a CFD (computational fluid dynamic) numerical wind tunnel computing technology and a finite element algorithm at first according to local weather conditions, the most adverse weather conditions and physical parameters of an arch-shaped shed, i.e. the ball head diameter of each node and geometric parameters of the rods on each node, and preparing a construction drawing, wherein the construction drawing at least comprises the serial number of each node and the number of rods on each node; and dividing construction steps into installation of basic units and installation of overhead cantilever units. Scaffolds are not needed to be erected in a whole house. The invention has the advantages that the time and materials can be saved, and the process is safe and reliable.

The invention relates to a special angle iron steel bar concrete structure, which uses the special angle iron steel bar concrete into construction. The invention can reduce the size of element, reduce the weight, reduce the material consumption, reduce the pollution, and simplify the operation.

The invention discloses an installation construction process of a bolt net rack cylindrical shell storage bin, which is characterized by comprising the steps of: firstly, according to local meteorological conditions, obtaining sizes of net rack node rod members by adopting a CFD (Computational Fluid Dynamics) numerical value wind tunnel calculation technology and a finite element algorithm according to most disadvantageous conditions and tunnel physical parameters, namely, drawing a construction drawing by using a bulb diameter of each node and a geometric parameter of the rod members arranged on each node, wherein the construction drawing at least comprises a number of each node and the quantity of rod members of each node; and then dividing the construction step into a starting unit installation and an air overhanging unit installation. Due to no need of erecting an accomplished scaffold, the installation construction process has the characteristics of time and material saving, safety and reliability.

The invention provides a rigid connection joint of a cold-bending multi-cavity steel tube concrete special-shaped column and a U-shaped combination beam. The machining method is described in that a thin-walled steel plate is machined to be a core column steel tube in cold-bending and welding methods; then, the side surfaces of the core column steel tube is taken as column-rib connection surfaces with the core column steel tube as the center; U-shaped members formed by cold bending are welded; end-column steel tubes are welded with flange connection boards and multiple sleeves; above-mentionedprefabricated members are finished, delivered to the site and welded with negative-bending longitudinal bars; then, the prefabricated members are connected with cold-bending U-shaped steel beams together; next, cavities of steel tubes are filled with concrete in order to manufacture the rigid connection joint of an in-line, L-shaped, T-shaped, or cross-shaped cold-bending multi-cavity steel tube concrete special-shaped column and a U-shaped steel beam. The U-shaped steel beam serves as a template. There is no need to install any template for concrete pouring. The factory prefabrication processcan help reduce construction time. Additionally, the joint is good in mechanical property, convenient in construction and cost-effective and reasonable. The joint has a joint form with a combinationstructure which enjoys a promising application prospect.

The invention discloses a fabricated structural system of steel plate reinforced concrete shear walls. The fabricated structural system comprises a beam member, the steel plate reinforced concrete shear walls, a floor and a sleeve connecting piece. Each steel plate reinforced concrete shear wall comprises vertical steel plates and continuous spiral stirrups. The structural system is high in assembling rate. The invention further discloses a construction method of the fabricated structural system of the steel plate reinforced concrete shear walls. The construction method comprises the steps that firstly, one prefabricated steel plate reinforced concrete shear wall is manufactured; secondly, the steel plate reinforced concrete shear wall on the lower layer is assembled; thirdly, the sleeve connecting piece is assembled on the steel plate reinforced concrete shear wall on the lower layer; fourthly, the beam member is assembled, and the floor is installed; fifthly, the floor and the beam member as well as the floor and the steel plate reinforced concrete shear wall on the lower layer are connected by pouring concrete, and concrete is poured to the junction of the beam member and the steel plate reinforced concrete shear wall on the lower layer; and sixthly, the steel plate reinforced concrete shear wall on the upper layer is hoisted, and finally concrete is poured to the junction of the steel plate reinforced concrete shear walls on the upper layer and the lower layer in situ. By adoption of the fabricated structural system of steel plate reinforced concrete shear walls and the construction method of the fabricated structural system, construction can be completed with the high assembling rate.

The invention discloses a structured injection wall and a construction process thereof. The structured injection wall comprises a transverse light steel joist frame and a vertical light steel joist frame, wherein the end parts of the transverse light steel joist frame are fixed on a column; the end parts of the vertical light steel joist frame are respectively fixed on a floor and a beam bottom; a steel wire plate net is fixed on a bracket structure formed by the transverse light steel joist frame and the vertical light steel joist frame; and slurry is coated on the steel wire plate net. The injection wall realizes structural design, is convenient for construction, realizes the wall lightweight, and facilitates to improve the building earthquake resistance.

The invention provides a prefabricated hybrid structure frame-shear wall building system and a construction method thereof. The prefabricated hybrid structure frame-shear wall building system includesprecast steel concrete shear walls and precast steel concrete superposed beams which are hoisted and spliced on a foundation. The precast steel concrete shear walls are connected with the precast steel concrete superposed beams to form a frame structure. A building system is formed by fixing a reinforced truss concrete floor, a prefabricated reinforced concrete staircase and a light masonry partition wall on a frame structure. The construction method of the prefabricated hybrid structure frame-shear wall building system includes the steps of constructing base of the foundation, installing theprefabricated steel concrete shear walls on the first floor, installing the prefabricated steel concrete beams, installing the reinforced truss concrete floor, installing the prefabricated reinforcedconcrete stair and the light masonry partition wall, and installing buildings on the next floor. The prefabricated hybrid structure frame-shear wall building system has the characteristics of high strength, light weight, fast construction speed, high degree of industrialization, recyclability and removability, and the steel structure is a reusable environmental protection material.

The invention relates to a reinforced concrete hollow beam which is 7-8m long, 0.2m wide and 0.55m high, four holes with phi 100mm are arranged in the beam in parallel, the interval between the centers of each two holes is 125mm, the distance from the lower edge of the bottom hole to the lower side of the beam is 40mm, the distance from the upper edge of the top hole to the upper side of the beam is 35mm, and the distances from the left edge and the right edge of the four holes to the left side and the right side of the beam are 50mm respectively; and two deformed steel bars with phi 12 are vertically arranged in the positions on the lower surface of the beam of 15mm to the lower side and 10mm to the left side and the right side like two rows, two groups of four deformed steel bars with phi 12 are transversely arranged between the two deformed steel bars in parallel, one deformed steel bar with phi 10 is vertically arranged in the positions of 15mm to the upper side of the beam and 10mm to the left side and the right side respectively, the ten steel bars are longitudinally hooped by steel wires of phi 5, and concrete is used for casting and molding. The fabricated reinforced concrete hollow beam has concrete strength grade of C30 grade, steel bar content of 169.5kg/m3, uniformly distributed load of 13.7KN/m, standard bending moment of 109.6KN/m, small solid volume, light self-weight, a small number of a variety of used materials, low cost, standard production technology, high force-bearing strength and high success rate.

The invention provides a building system combined a truss with steel shaped like a Chinese character 'zhi'. The building system is used for constructing a warehouse or a plant and comprises rigid frame column beams, middle columns, purlines, cornice supporting units, wall frame columns, truss type secondary beams and truss type joists. The rigid frame column beams are connected with the cornice supporting units and provided with the middle columns; the purlines are arranged between rigid frame beams and comprise cornice purlines and roof purlines; the cornice supporting units are arranged between the cornice purlines and connected with one ends of the rigid frame beams; the wall frame columns are parallelly arranged between the rigid frame columns; the truss type secondary beams are parallelly arranged between the rigid frame beams and located below the purlines; and the two ends of the truss type secondary beams are connected with the truss type joists correspondingly. According to the building system combined the truss with the steel shaped like the Chinese character 'zhi', all kinds of components with the cost performance ratio are economically combined, characteristics of the components are fully exerted, so that a plant or warehouse building within a certain specification and load range has small deflection and the low comprehensive construction cost, the steel content isgreatly reduced, and construction is convenient and fast.

The invention discloses a prefabricated profiled steel sheet combined shear wall and a construction method thereof. The prefabricated profiled steel sheet combined shear wall comprises a first profiled steel sheet, a second profiled steel sheet, edge steel columns, a connecting steel plate, a plurality of vertical inserting plates, a plurality of transverse inserting plates and a plurality of split bolts; the first profiled steel sheet and the second profiled steel sheet are stacked in the vertical direction, and a joint seam is arranged at the stacked part; the edge steel columns are positioned on the two sides of the first profiled steel sheet and the second profiled steel sheet; the connecting steel plate covers the joint seam; first inserting holes are formed in the two ends of each ofthe transverse inserting plates; the transverse inserting plates sequentially penetrate through the connecting steel plate and the first profiled steel sheet to connect the connecting steel plate andthe first profiled steel sheet; the first inserting holes in the two ends of the transverse inserting plates are exposed to the external world; the vertical inserting plates are inserted in the firstinserting holes; the split bolts sequentially penetrate through the vertical inserting plates, the connecting steel plate and the second profiled steel sheet to connect the vertical inserting plates,the connecting steel plate and the second profiled steel sheet; the first profiled steel sheet and the second profiled steel sheet adopt closed type profiled steel sheets; a concrete cavity is formedin each of the first profiled steel sheet and the second profiled steel sheet; and concrete is filled in the concrete cavities.

The invention discloses a light partition wall, which comprises standard formworks. Each standard formwork comprises a light steel keel and two face plates, wherein the light steel keel is located between the two face plates; the face plates and the light steel keels are connected through bolts; the two opposite edges of the light steel keels are provided with overlaid parts which can be mutuallymatched; and the face plates do not cover the small ends of the overlaid parts. The light partition wall achieves the purposes that the light partition wall can replace a bricked partition wall and atraditional light steel keel partition wall manufactured on a field, assembling is convenient and quick, labor force is saved, and the construction and production efficiency is improved; and meanwhilethe house space is saved.

The invention provides a rigid joint of a cold-bending multi-cavity steel tube concrete special-shaped column and an H-shaped steel beam. According to a machining method thereof, a thin-wall steel plate is machined to be a core-column steel tube in cold-bending and welding manners. Moreover, the core-column steel tube is taken as the center. The side surfaces of the core-column steel tube are taken as column-limb connecting surfaces and orderly welded with U-shaped members formed by cold bending. Then, the end part of the column steel tube is welded with flange connection boards and short steel beams. Pre-fabricated members are finished and conveyed to the field. Splicing and assembly between the pre-fabricated members and framework beams are finished. Then, cavities of pipe bodies are filled with concrete in order to prepare a ridge joint of an in-line, L-shaped, T-shaped or cross-shaped cold-bending multi-cavity steel tube concrete special-shaped column and the H-shaped steel beam. From perspectives of machining efficiency and increase in cost-effectiveness, the joint is good in mechanical performance, convenient in construction, and is cost-effective and reasonable and has a joint form with a combined structure having a promising application prospect.

The invention relates to a leaning type arch center film structure, belongs to the technical field of structural frames and mainly aims to solve the technical problems that the existing steel structure is high in antiseptic cost, large in quantity of working high above the ground, high in risk factor, difficult in supervising, common in space utilization ratio, high in dismantling cost and not suitable for mounting a film material. According to the technical scheme, the leaning type arch center film structure comprises a bottom steel structural bracket and a plurality of groups of upper framestructures, wherein the bottom steel structural bracket comprises a plurality of stand columns in rectangular arrangement; a horizontal steel pulling cable is arranged between the tops of every two adjacent stand columns; each of the upper frame structures comprises two leaning arch ribs symmetrically arranged and a plurality of connecting transverse beams between the two leaning arch ribs; building film materials are paved on the top surfaces of the upper frame structures; and a top surface steel pulling cable is arranged between every two adjacent upper frame structures above a tensile film.The leaning type arch center film structure has the advantages of being low in steel content, simple in construction technology, short in construction period, low in cost and suitable for adopting film material for sealing.

The invention discloses a module structure and system and a construction method. The module structure comprises stand columns, transverse beams, longitudinal beams, corner pieces, first shear-resistant components and a module panel. Each corner piece comprises a top plate, a bottom plate, a vertical side plate and end plates, wherein the top plate is in an L shape, and the shape of the bottom plate is adapted to the shape of the top plate; the horizontal section of each vertical side plate is in an L shape, and each vertical side plate is connected between the outer side edge of the corresponding top plate and the outer side edge of the corresponding bottom plate; the two end plates are connected between the two ends of each top plate and the two ends of each bottom plate respectively; andthe edges of the sides, corresponding to the vertical side plates, of the end plates are fixedly connected. The first shear-resistant components are distributed on the sides, close to the stand columns, of the tops or bottoms of the corner pieces. Each first shear-resistant component comprises a first shear-resistant plate, first shear-resistant blocks and a first connection bolt, wherein the twofirst shear-resistant blocks are connected to the top and the bottom of the first shear-resistant plate respectively; and the first connection bolts make the corresponding corner pieces connected with the corresponding stand columns. The technical problems of poor connection strength, low industrial manufacturing degree, complicated construction and poor overall performance of a traditional module structure joint are solved.

The invention relates to the field of constructional engineering and provides a construction method, a mounting structure and a combined structure for a coupling beam between shear wall limbs. The construction method includes: burying anchor bolts in a shear wall limb on one side; fixing a steel support frame on the shear wall limb with the anchor bolt via anchor bolts and nuts; above the steel support frame, constructing stirrups and longitudinal reinforcement steel bars of the coupling beam; pouring concrete of the coupling beam to enable one end of the poured section of the coupling beam to be mounted on the shear wall limb without the steel support frame, enable the other end of the poured section of the coupling beam to overlap on the steel support frame and reverse a vertical seam between the poured section of the coupling beam and the shear wall limb with the steel support frame; after vertical differential settlement between each of two ends of the poured section of the coupling beam and the corresponding shear wall limb is smaller than 2-4mm, pouring concrete to the vertical seam to form an integral coupling beam. The construction method, the mounting structure and the combined structure have the advantages that additional internal force generated from vertical deformation difference between two ends of the coupling beam can be released, section size of the coupling beam can be decreased, and steel content of the coupling beam is decreased.

The invention belongs to the technical field of iron-based alloys, and particularly relates to a high-strength galvanized steel sheet manufacturing method.The high-strength galvanized steel sheet manufacturing method comprises a galvanizing device, adjusting devices are slidably connected to the left side and the right side of the upper portion of the outer surface of the galvanizing device, pressure devices are arranged on the lower portions of the inner walls of the adjusting devices, and the galvanizing device comprises an electrolytic tank; a penetrating rotating opening is formed in the middle of the lower portion of the inner wall of the electrolytic tank, the lower portion of the inner wall of the electrolytic tank is fixedly connected with a vertical guide shell through the penetrating rotating opening, and a threaded rotating groove is formed in the inner wall of the vertical guide shell. Compared with a common steel plate, the anti-pressure capacity and toughness of the device are improved through the rock wool sandwich layer in the galvanized steel plate sleeve, when the galvanized steel plate sleeve on the outer layer is impacted, the rock wool sandwich layer on the inner layer can effectively absorb the impact force, the impact force borne by the other side of the galvanized steel plate sleeve is greatly reduced, and the service life of the device is prolonged. And therefore, the impact resistance of the galvanized steel sheet is relatively high.