36results about How to "Reduce the amount of structural steel used" patented technology

This is a method used to produce long span spread chord truss. It contains: To weld the belly rod on the upper spread chord rod, put the formed upper chord rod on the wording platform, fix the two ends of this chord rod on the fixed seat, then connect lower end of the belly rod with cover joint pipe, and between two cover pipes beforehand put a lower chord steel pipe. The steel rope pierce through every joint cover pipe and every lower chord steel pipe, then to spread out the steel rope, on the steel rope at the spreading straight, state weld every lower steel pipe with every joint cover pipe, keep the steel rope spread out straightly, then loose the two ends of the upper chord rod from platform, then long span spread chord truss is finished.

The invention discloses a stabilizing device, a floating foundation and an offshore wind power generator. The stabilizing device comprises a U-shaped water chamber, wherein the U-shaped water chamber comprises a first hollow upright column, a second hollow upright column and a bottom buoyancy tank connected between the bottoms of the two upright columns, the first upright column and the second upright columns are communicated with the bottom buoyancy tank, and the top of the first upright column and the top of the second upright column are communicated through an air communication pipeline. The floating foundation is at least provided with a first upright column, a second upright column and a third upright column, and comprises at least one stabilizing device. The offshore wind power generator comprises the floating foundation, a mooring rope, a tower, vanes and a wind power generator set, wherein the mooring rope is connected with the outer edge of the floating foundation and is anchored to the seabed, the bottom end of the tower is arranged on the floating foundation, and the vanes and the wind power generator set are arranged on the top of the tower. By means of the stabilizing device, stabilizing of a floating fan can be simply and effectively achieved through a double-resonance principle.

The invention relates to a separable large-section truss girder hydraulic lifting device. The separable large-section truss girder hydraulic lifting device comprises a main bearing structure, a positioning and anchoring system, a main lifting system, a running system, a hydraulic pump station power system, and a computer control and operation system, wherein the main bearing structure consists ofa main bearing truss, a steel tower and a pulling rope, and is a tower, rope and girder combined system; the main bearing truss is a main girder; the steel tower is in a lattice form; a steel anchor girder is arranged on the top of the steel tower; the pulling rope is anchored on the bearing truss and the steel tower respectively; the two ends of a front rope are fixed, and one end of a rear ropeis fixed and the other end of the rear rope is tensioned; and the whole main bearing structure is triangular. In the main bearing structure of the separable large-section truss girder hydraulic lifting device, the structural bearing capacity is improved by a method of pre-stressing the main bearing truss by using parallel steel ropes, so the structural gravity is reduced. By a technology of controlling hydraulic lifting by using a computer, precise control, such as synchronous lifting control, single top lifting control, longitudinal movement adjusting control and the like, can be realized under the condition of a large deviation between a front lifting load and a rear lifting load, and the precision is up to 1 millimeter.

This invention relates to a kind of three strides serial rigid steel arched bridge. It includes the medium bear main arch rib, the main arch deck which connects with the main arch rib through suspender and the medium bear side arch rib which is on both sides of main arch rib, the side arch deck which connects with the side arch rib and fixes it through the suspender. The main arch rib connects with the side arch rib's inner side arch springing through the triangular rigid structure on main frusta. The side arch rib's outer side arch springing connects with side frusta through support abutment. On both sides of side arch deck there is flexible tie bar, the side arch rib's outer side arch springing and the side frusta's connecting support abutment are portrait glide support abutments. The main arch deck is steel structure or steel mixture combination structure. The side arch deck is the concrete structure. This invention improves the whole bridge's rigidness by optimizing the structure. It makes the main frusta's imbalance flexural torque and level force become small. It lowers the base design difficulty and saves the bridge's steel usage. It also saves the investing cost. Its three strides serial rigid steel arch becomes more beautiful and harmony on appearance.

The invention discloses a hollow-sandwich multi-cavity steel pipe concrete member and a preparation method thereof. The hollow-sandwich multi-cavity steel pipe concrete member comprises an internal steel pipe and an external steel pipe which are concentrically placed; a space between the internal steel pipe and the external steel pipe is filled with concrete; a plurality of transverse diaphragms are uniformly distributed on the external wall of the internal steel pipe around the axis of the internal steel pipe; each transverse diaphragm is placed along the full length of the internal steel pipe in the axial direction; the external end part of each transverse diaphragm is in clamping connection with a groove formed in the internal wall of the external steel pipe; convex teeth are arranged on the internal wall of the external steel pipe and the external wall of the internal steel pipe; a plurality of shear grooves are uniformly formed in the side surfaces of the transverse diaphragms inthe axial direction; a plurality of external cylinders made of carbon fiber composite materials are bonded outside the external steel pipe in the annular direction; and the external cylinders are notconnected with the end part of the external steel pipe. According to the hollow-sandwich multi-cavity steel pipe concrete member, the corrosion resistance is high, less separation phenomena between the steel pipe walls and the concrete are less, the steel pipes are unlikely to generate local buckling, and the stressed states of the concrete in three directions are uniform.

A large-span, secondary-beam-free and high-assembly industrialized steel structure system comprises a staggered steel structure truss, a plurality of prefabricated large-span prestressed hollow slabs and concrete composite layer, wherein the staggered steel structure truss adopts a multilayer structure with at least double spans, and comprises framework columns, framework beams and plane trusses; the framework columns and the framework beams are vertically arranged at the periphery of the staggered steel structure truss to form a framework structure; the plane trusses are arranged in an upper-and-lower staggered manner in the height direction of the framework columns, and the plane trusses on the adjacent framework columns are arranged in an upper-and-lower staggered manner; the two ends of each plane truss are supported on the framework columns on the two sides; each plane truss is formed by connecting upper chords, lower chords, straight web members and diagonal web members; the prefabricated large-span prestressed hollow slabs are arranged on the staggered steel structure truss; one ends of the prestressed hollow slabs are supported on the upper chords of the plane trusses, and the other ends of the prestressed hollow slabs are supported on the lower chords of the adjacent plane trusses; the concrete composite layers are paved on the prefabricated large-span prestressed hollow slabs. The large-span, secondary-beam-free and high-assembly industrialized steel structure system is economical in steel consumption, standard in element production, convenient and fast to construct, and convenient for industrialized production.

The present invention discloses a kind of obliquely-crossed obliquely-placed grid reinforcement-concrete open-web sandwich reticulated barrel shell and barrel vault roof structure. It is made up by utilizing reinforcement-concrete crossed, obliquely-placed and combined open-web sandwich plate and bending it along span direction according to the curved or parabolic form. As compared with existent technique the invented concrete reduced thickness can be reduced by 30%-50%, its structure self weight can be reduced by 30%-50% and its reinforcement consumption can be reduced by 25%-30%, so that its construction cost also is reduced.

The invention discloses a suction bucket foundation with prefabricated concrete pressing blocks. The suction bucket foundation comprises an upper transition section and a lower suction bucket, the upper transition section is arranged on the upper portion of the lower suction bucket, and the multiple prefabricated concrete pressing blocks are arranged on the lower suction bucket. According to the suction bucket foundation, the problems that in order to increase the weight of the upper transition section in an existing suction bucket foundation, the overall weight of the suction bucket foundation is increased by directly pouring and tamping concrete on the lower bucket body, however, concrete is poured on the surface of the bucket body for a long time, the maintenance time is long, the occupied area is large, meanwhile, the overall flexural rigidity of an existing suction bucket foundation structure needs to be improved by increasing the height of the bucket body, and the structural steel consumption is large can be effectively solved.

The invention relates to an ultrahigh and huge steel structure vibration attenuation integrated system. The ultrahigh and huge steel structure vibration attenuation integrated system is applied to a super high-rise building and comprises ultrahigh and huge steel structure units and vibration attenuation device units arranged on the ultrahigh and huge steel structure units, wherein each ultrahigh and huge steel structure unit consists of a main structure sub-unit and a secondary structure sub-unit arranged on the main structure sub-unit, the main structure sub-unit comprises a huge steel frame and a steel core cylinder arranged in the huge steel frame, the huge steel frame consists of multiple huge columns and annular belt trusses arranged on the huge columns, and each vibration attenuation device unit comprises a viscous damping mechanism and/or tuning vibration attenuation mechanism. Compared with the prior art, the ultrahigh and huge steel structure vibration attenuation integrated system has good structural economy and air vibration comfort level, is high in structural efficiency, strong in structural wind resistance and anti-seismic property, low in structural steel consumption, flexible in building arrangement, high in construction speed, high in in vibration attenuation efficiency and the like.

The invention discloses a multi-module structure for a three-dimensional box-type fabricated lightweight steel structure and a connecting mode thereof and relates to the technical field of construction. Upper guide rails, corner columns and lower guide rails form frame modules, and the frame modules are connected through corner parts, vertical bolts, horizontal bolts, longitudinal bolts and connecting plates. The corner parts are welded at the upper ends and the lower ends of the corner columns, and the connecting plates are arranged between the corner parts of upper and lower layers of frame modules. The longitudinal bolts sequentially penetrate through pad plate limiting holes located on the same layer pad plates, front and rear holes of the corner parts at the lower ends of the corner columns in the front, front and rear holes of the corner parts at the lower ends of the corner columns in the back and pad plate limiting holes formed in the pad plates and then are connected and fixed through nuts. Interior decoration work can be completed in a factory, the structure steel amount is obviously reduced, and meanwhile members are light and convenient, so that the multi-module structure is quicker to install. A lightweight steel wall can be changed according to the change of room opening requirements and building size, convenience is brought to installation of heat insulation layers and line pipelines, and the factorization degree and construction speed are high.

The invention provides a rigid composite steel bridge deck pavement structure, which includes a high-strength and toughness concrete pavement layer and an orthotropic steel bridge deck; the high-strength toughness concrete pavement layer and the orthotropic steel bridge deck Adhesives, or shear connectors, or both epoxy adhesive and shear connectors are combined into a whole to bear the force together. The rationally designed and carefully constructed high-performance composite bridge deck pavement in the present invention has high rigidity and strength, and good durability and fatigue resistance, which can replace traditional flexible pavement such as asphalt concrete, and improve the fatigue problem of steel beams .

The invention discloses a four-stand-column semi-submersible offshore floating platform. The four-stand-column semi-submersible offshore floating platform comprises two box-type components and four stand columns. Each box-type component comprises a component body and four transversely-distributed arm-shaped pieces, wherein the four arm-shaped pieces are distributed around the component body in a surrounding mode. The adjacent arm-shaped pieces are perpendicular to each other. The two box-type components are distributed in the vertical direction. The bottom of each arm-shaped piece of the box-type component located on the upper portion is fixedly connected with the top of one stand column. The top of each arm-shaped piece of the box-type component located on the lower portion is fixedly connected with the bottom of one stand column. The structure form is simple, and large-scale batch construction is facilitated. The structure has stability redundancy, and the steel consumption of the structure can be reduced.

The invention belongs to the field of building structural construction, in particular to a temporary reinforcing method of circular pipe components. The temporary reinforcing method has the following specific construction steps that (1) according to the specifications of reinforced circular pipes, appropriate steel angles and steel angle fasteners matched with the steel angles are selected; (2) according to the lengths of the reinforced circular pipes, the lengths of the steel angles and the number of the steel angle fasteners are determined; (3) before the circular pipe components are stressed, two steel angles are symmetrically arranged on the two sides of each reinforced circular pipe and fixed through the corresponding steel angle fasteners; and (4) after structural construction unloading, the steel angle fasteners are loosened, steel angle reinforcing devices are dismantled, and reinforcing of the circular pipe components is completed. The temporary reinforcing method facilitates construction, and construction does not need machines such as a crane and can be achieved through manual work.

The invention discloses a super-large span variable section double-layer and three-layer prestressed rib beam type net rack and a making method. The super-large span variable section double-layer and three-layer prestressed rib beam type net rack comprises a net rack (1), wherein the net rack (1) consists of double layers of rightly placed quadrangular pyramid trusses (2), and three layers of rightly placed quadrangular pyramid trusses (3) are arranged at about one third position of each side of the net rack (1) in the x direction and the y direction; and prestressed steel cables (4) are arranged on the three layers of rightly placed quadrangular pyramid trusses (3). A novel structural form is provided for the field of super-large (L is more than or equal to 120m and less than or equal to 180m) span space steel grid structures, the defect of over high consumption of steel for the conventional super-large span steel grid structure is overcome, the design requirements for 'safety, reasonability, advance and economy' are met, and the net rack is simple in construction and strong in operability; and compared with the conventional super-large span steel grid structure, the net rack has the advantages of greatly reducing the consumption of the steel and reducing the manufacturing cost of engineering.

The invention relates to a prefabricated beam column assembly type system which comprises a plurality of prefabricated steel pipe columns, prefabricated steel beams and prefabricated steel plates. A pouring groove for pouring concrete is formed in the prefabricated steel pipe column; the multiple prefabricated steel beams surround the prefabricated steel plate and are fixedly connected with the prefabricated steel plate to form a prefabricated beam plate, an assembly notch matched with the prefabricated steel pipe column is formed between every two adjacent prefabricated steel beams, and a pouring area which is provided with an upward opening and used for pouring concrete is formed between each prefabricated steel beam and the prefabricated steel plate; connecting plates are fixedly arranged on the prefabricated steel pipe columns and located at the joints of all the floors, and the connecting plates are fixedly connected with the prefabricated steel beams at the assembling notches of the floors. The invention further relates to a construction method of the system. The construction method comprises steel pipe column prefabricating operation, beam plate prefabricating operation and on-site assembling operation. The integral assembly type structure is adopted, the construction site process is extremely simple, working hours are greatly reduced, and meanwhile the labor cost is saved.

The invention discloses a single-layer latticed shell structure with a tension ring. Comprising a main reticulated shell structure (I) and a supporting structure (II) which are connected, the main reticulated shell structure (I) comprises a shell (1) and a tension ring (2) located on the outer surface of the shell (1), and the tension ring (2) is in a grid shape; the supporting structure (II) is composed of a plurality of connected V-shaped supports (8), and the V-shaped supports (8) form a ring and are connected with the main body latticed shell structure (I). The curved surface of the main body latticed shell structure is an ellipsoidal surface, all rod pieces are axial force rod pieces through shape finding, and the bending moment is almost zero. The latticed shell is composed of a shell body and a tension ring, under the action of vertical loads, the latticed shell mainly bears axial pressure, and an annular rod piece of the tension ring mainly bears pulling force. And under the action of a horizontal load, the V-shaped support can transmit the load through a pulling-pressing effect, and the shearing force and the bending moment of the rod piece are also small.

The invention relates to the technical field of bridge engineering, and provides a suspension type monorail open box type track beam which comprises two bottom plates, a first closed box type and a second closed box type which are respectively and vertically arranged on the two bottom plates, a third closed box type is arranged between the ends, away from the bottom plate, of the first closed boxtype and the second closed box type, and the first closed box type and the second closed box type are each provided with a part for being in contact with a guide wheel. And the first closed box type,the second closed box type and the third closed box type form a closed-loop structure. The track beam is composed of the three closed box types, the three closed box types form a closed-loop structure, stress flow forms a complete closed loop, compared with an open section, the torsional strength of the section of the structure is greatly improved and is about ten times or above that of the open section, deformation caused by torsion is remarkably reduced, and a guarantee is provided for improving the train running comfort.