57results about How to "Improve earthquake resistance and energy dissipation capacity" patented technology

The invention discloses a square steel pipe fabricated column-prefabricated superposed beam integrally-fabricated frame and a construction method. The frame comprises a square steel pipe with inner and outer ribs, a square steel pipe casing with connecting wing plates and a prefabricated superposed beam. The square steel pipe is formed by rolling once, a thin centrifugally-produced concrete protective wall is arranged inside the square steel pipe, and high-performance concrete wraps the square steel pipe, so that a square steel pipe fabricated column is formed. The square steel pipe casing with the connecting wing plates is used for vertical connection between one upper square steel pipe fabricated column and one lower square steel pipe fabricated column as well as connection between the prefabricated superposed beam and the square steel pipe fabricated column. Short I-beams are arranged at the ends of the prefabricated superposed beam, and the prefabricated superposed beam is connected with the connecting wing plates on the square steel pipe casing through high-strength bolts. An engineered cementitious composite or fiber reinforced cement composite is poured in beam-column joint connection areas. The concrete fabricated superposed beam is connected with prefabricated floor slabs as well as the prefabricated floor slabs are connected both through fiber reinforced composite plastic boards. A prefabricated house has the advantages of reasonable stress, convenience in construction, high joint ductility, good endurance and anti-seismic performance and the like.

The invention relates to a bottom double composite section steel shear wall with a reinforced concrete frame and an inside-hidden steel plate as well as a manufacturing method. The shear wall comprises a steel reinforced concrete composite frame column, a mild steel energy-consuming steel plate and a shear wall steel plate, which is a double composite column comprising the composite of the externally-adhered mild steel energy-consuming steel plate and a concrete filled steel tube column and the composite of the concrete filled steel tube and a reinforced concrete column and is a multiple combination body comprising the combination of a reinforcing bar and concrete, the combination of a steel plate and the concrete and the combination of a steel reinforced concrete frame column and a steel plate shear wall. Compared with a conventional shear wall, the shear wall provided by the invention has the advantages of high initial stiffness, high bearing capacity, slow bearing capacity and stiffness attenuation, good whole anti-seismic energy-consuming performance and relatively stable later-stage anti-seismic performance; the bottom shear-slip damage is little; and after a mild steel casing pipe is added, the outer mild steel casing pipe is firstly surrendered so as to consume the energy in the structure input by earthquake and can give play to the effects of resistance and ductility till being destroyed, therefore, the premature damage and destroy of the high-strength steel plate can be prevented and delayed.

The invention relates to a grid reinforced bar support special-shaped section short shearing force wall and relative producing method. The special-shaped section short shearing wall is formed by hidden post (1) and shearing wall plates. Wherein, it arranges reinforced bar network inside the wall plate and hidden posts at the end and corner of wall branches; when using two-row reinforced bars, the horizontal distributed reinforced bar (4) uses rectangle closed hoop reinforcement and adds intercross grid reinforced bar support between the reinforced bar network while said grid reinforce bar support is made by using drawing reinforced bar (9) to bond or weld the inclined reinforced bar beam (8); when the reinforced bar network uses single-row distributed bar, it arranges grid reinforced bar support at the two sides of reinforced bar network; it inserts hidden post (1) anchorage at the upper and lower ends of inclined reinforced bar beam (8); and both the web and swing wall branch have said grid reinforced bar support. Compared to general short shearing wall, the invention has improved anti-vibration ability, improved loading ability, higher ductility, higher torsional resistance, reduced side rigidity reduction and limited bottom shearing slide.

The invention belongs to the field of structural vibration reduction, and in particular, relates to an electromagnetic eddy rotating damper. The electromagnetic eddy rotating damper comprises an outer cylinder, an inner cylinder and a lead screw, wherein the inner cylinder is positioned in the outer cylinder; the outer peripheral surface of the lead screw is matched and connected with a screw nut; the outer peripheral surface of the lead screw is fixedly connected with the inner wall of the inner cylinder; a coil is arranged on the outer peripheral surface of the inner cylinder; an annular permanent magnet is fixed on the inner wall of the outer cylinder, and is corresponding to the coil; a thrust bearing is arranged between the outer cylinder and the screw nut; and a roller bearing is arranged between the outer cylinder and the inner cylinder. The electromagnetic eddy rotating damper can effectively consume the energy of earthquake and wind vibration; in particular, under major earthquake, the damper is more obvious in energy consumption; and the damper is small in size and various in mounting forms.

The invention relates to a steel frame integrated member, in particular to a steel frame integrated member for concrete core tube structures and an assembly method thereof, and belongs to the field of steel structures. The steel frame integrated member comprises a core tube, a steel column component and steel beam components. The bottom of the steel column component is fixed to the core tube. Two lateral ends of an upper end of the steel column component are provided with the steel beam components fastened to the steel column component, respectively. The assembly method includes the steps of subjecting parts to setting out and blanking, perforating the parts, reinforcing a steel column, performing assembly and inspecting the member. The steel frame integrated member and the assembly method thereof have the advantages that the structure is compact, ductility of a steel-structure beam-column joint is improved, the ability of the joint to resist earthquakes and dissipate energy is enhanced, and overall seismic capacity of the structure is further improved.

The invention discloses a latticed single-row reinforced special-shaped sectional concrete column-wallboard shock absorption house and a making method, and belongs to the technical field of earthquake prevention and disaster reduction. The house mainly comprises a plain concrete cushion layer, foundation beams, latticed single-row reinforced special-shaped sectional concrete columns, lightweight ecological wallboards or wall bricks, reinforced concrete framework beams, and a reinforced concrete floor (roof). The latticed single-row reinforced special-shaped sectional concrete columns are reinforced in single row, and a steel bar framework is welded by using two reinforcing meshes of different forms, so that the house is simple in construction, low in consumption of steel bars and convenient for industrialized production; latticed oblique web reinforcement shearing resistance is good, crisp shearing damage of the special-shaped sectional short columns is prevented, and the anti-earthquake ductility is improved; and walls are made of the lightweight ecological wallboards or wall bricks, the wallboards or the wall bricks are connected with the special-shaped columns through steel ties, and the wallboards or the wall bricks are mutually engaged by means of key grooves and mutually connected reliably, so that the aims of reinforcing the integrity of the house and promoting the integral anti-earthquake and energy dissipation capacity are fulfilled, and the house is suitable to be used as a rural house.

The invention discloses a full-grouting sleeve adopting eccentric connection of reinforcing steel bars and a usage method of the sleeve, belongs to the technical field of concrete buildings and can decrease the protection layer thickness, prevent concrete cracking and improve project quality. The sleeve comprises a sleeve body, wherein an upper inner cylinder and a lower inner cylinder are arranged in the sleeve body and communicated with each other; the sleeve is characterized in that the upper and lower inner cylinders are arranged eccentrically, and reinforcing steel bar limiting stop blocks are arranged at ends of inner sides of the upper and lower inner cylinders; and barbs are arranged on inner surfaces of the upper and lower inner cylinders respectively. The usage method comprises steps as follows: an exposed reinforcing steel bar of an assembled component is sleeved with the upper inner cylinder, and one end of the reinforcing steel bar reaches the position of the upper reinforcing steel bar limiting stop block; an exposed reinforcing steel bar of a to-be-assembled component is inserted into the lower inner cylinder, and one end of the reinforcing steel bar reaches the position of the lower reinforcing steel bar limiting stop block; a grouting material is injected into a grouting hole until the whole inner cylinders are filled with the grouting material; after the grouting material reaches the specified strength, strength checking is performed on a strength checking section.

The invention relates to a shear wall with energy-consuming strips embedded between a border and built-in steel plates and steel braces, and a making method. A wall body comprises steel tube concrete border columns, precast concrete plates, high-damping energy-consuming materials, connectors, intermediate steel plates, and reinforcing steel braces. Gaps are reserved between the precast concrete plates and the border columns, and between the precast concrete plates and the intermediate steel plates and are filled with the high-damping energy-consuming materials. The formed energy-consuming strip border firstly consumes energy to protect the concrete plates, ensures the integrity of the shear wall, prolongs the breakage time of the concrete plates, and improves the anti-seismic property under the action of earthquake; the reinforcing steel braces bear skew force, and improves the buckling resistant capacity; the precast concrete plates can be quickly replaced after earthquake, so that the repair rate of post-earthquake is improved, and houses can quickly restore the use functions; a plurality of steel plates are used in a large-span space, so that the partitioning energy consumption is realized, and the materials are utilized more fully; the shear wall has good social benefits and broad application prospects.

The invention discloses a fabricated frame structure beam-column connection node and a construction method and relates to the structural engineering field. The beam-column connection node includes a prefabricated cow-leg pillar, a prefabricated beam, a high-strength bolt, a pressure bearing steel plate and a nut, wherein the prefabricated beam includes a main body and a connecting portion, the connecting portion is located at an end portion of the main body and is integrally formed with the main body, the cross-sectional area of the connecting portion is larger than the main body, a force applying surface opposite to an end surface of the prefabricated beam is formed on the connecting portion, the pressure bearing steel plate is disposed on the force applying surface, the connecting portion is supported by cow legs on both sides of the cow-leg pillar, the connecting portion and the cow-leg pillar are connected through the high strength bolt, and an end portion of the high-strength boltpenetrates through the pressure bearing steel plate and is tightened by the nut. The beam-column connection node is advantaged in that through the prefabricated cow-leg pillar and the prefabricated beam, in a direct field splicing mode, construction of the beam-column connection node is completed, construction efficiency is effectively improved, energy saving and environmental protection are achieved, later maintenance difficulty is low, deformation capacity of the node is further greatly improved, and anti-vibration energy consumption capacity of the node is enhanced.

The invention discloses a bearing structure of a three-dimensional garage with an energy-consumption truss lateral-resistance form vertical-lifting type high-rise steel structure. A lateral-resistance component of horizontal force in the bearing faces of upright faces at both sides of the structure of the three-dimensional garage comprises energy-consumption trusses arranged layer by layer. Each energy-consumption truss comprises an upper chord member, a lower chord member, two upright web members and two diagonal web members, wherein all the web members are symmetrically arranged, the height of the trusses is the same as the height of a structural layer, and the trusses are leveled with the structural layer; the upper chord member and the lower chord member are both continuous chord members, and both ends of each continuous chord member are rigidly connected with corner posts; the two upright web members are vertical to the upper chord member and the lower chord member, both ends of each vertical web member are respectively hinged with the upper chord member and the lower chord member, and the distance of the two upright web members is 1/8 to 1/4 times the height of the trusses; one end of each diagonal web member is hinged at the position of the connecting joint of the upper chord member and the corner posts, and the other end of each diagonal web member is slantways hinged at the position of the connecting joint of the upright web members and the lower chord member downwards; and thereby, a shearing energy-consumption section the length of which is 1/8 to 1/4 times of the height of the trusses is formed at the middle parts of the upper chord member and the lower chord member of the energy-consumption trusses. By the invention, the structure has better shock resistant performance and sufficient lateral-resistance rigidity; and meanwhile, by the interlayer arrangement of the trusses, mechanical equipment in the garage is convenient to hang and install laterally.

The invention discloses a method for reinforcing an electric power tunnel by means of fiber grid enhanced polymer mortar and a material, and belongs to the technical field of fiber grid enhanced cement-based composite material reinforcing. Raw material components comprise cement, polymers, polyvinyl alcohol fibers, alkali-resistant glass fibers, sand, water, a water reducer, starch ether, cellulose ether and the like. The method comprises the steps that pre-repairing such as filling and blocking is conducted on masonry or concrete tunnel wall cracks with the polymer mortar, and the mortar is embedded into the cracks; the surfaces of rusted steel bars are painted with a steel bar corrosion remover, and the tunnel wall is painted with one or two layers of an interface agent; and structural reinforcing is conducted on the tunnel and the well wall through multiple layers of the fiber grid enhanced polymer mortar. In order to improve the anti-seismic overall property, 1-3 fiber rib enhancedconcrete ring beams are arranged; and pretreatment is conducted firstly, and then reinforcing is conducted.

The invention provides a steel corrugated shell and prestressed concrete composite beam and a construction method thereof. The steel corrugated shell and prestressed concrete composite beam comprisesa steel corrugated shell, a prestressed steel strand and a concrete layer, wherein the steel corrugated shell comprises upper flanges, lower flanges, a corrugated web and an end web; the two upper flanges are arranged in parallel at left and right and are connected with each other by means of at least one upper flange connecting piece; the two lower flanges are arranged in parallel at left and right and are connected with each other by means of at least one lower flange connecting piece; the upper flanges and the lower flanges are arranged up and down in parallel; the corrugated web is arranged between the upper flanges and the lower flanges; the end web is arranged at the end of the corrugated web and is erected between the upper flanges and the lower flanges; the prestressed steel strandis arranged in the steel corrugated shell and passes through the steel corrugated shell along the length direction of the steel corrugated shell; the steel corrugated shell is internally filled withconcrete so as to form the concrete layer. The steel corrugated shell and prestressed concrete composite beam provided by the invention is good in shearing resistance, shock resistance and fire resistance, and is economical.

The invention discloses a steel bar eccentric connection half grouting sleeve and a using method thereof, which belong to the technical field of concrete construction, and can reduce the thickness of protective layers, prevent concrete from cracking, improve project quality, are further beneficial to speed up construction progress, and shorten construction period. The steel bar eccentric connection half grouting sleeve comprises a sleeve body which is provided with a grouting hole and a discharging hole, wherein a thread hole is arranged on the upper portion of the sleeve body, a lower inner cylinder is arranged on the lower portion of the sleeve body, and the thread hole and the lower inner cylinder are communicated with each other. The steel bar eccentric connection half grouting sleeve is characterized in that the thread hole and the lower inner cylinder are eccentrically arranged, and barbs are arranged on the inner surface of the lower inner cylinder. The method for using the steel bar eccentric connection half grouting sleeve is that: the surfaces of exposed steel bars of assembled components are treated through threads, and the exposed steel bars are mechanically connected with the thread holes; exposed steel bars of components to be assembled are inserted into the lower inner cylinder, thereby enabling inserted lengths to meet specified anchorage lengths; and grouting materials are filled into the grouting hole until being filled into the whole inner cylinder, and the strength is calculated through cross sections after the grouting materials achieve specified strength.

The invention discloses a short angle iron connection type reinforced concrete assembling integrated frame and a construction method of the short angle iron connection type reinforced concrete assembling integrated frame. The integrated frame comprises reinforced-concrete-prefabricated columns with short beam segments and reinforced-concrete-prefabricated beams. The two ends of the reinforced-concrete-prefabricated beams, the two ends of the reinforced-concrete-prefabricated columns and the ends of the short beam segments of reinforced-concrete-prefabricated columns are provided with short angle iron for connection. The upper faces of two branches of the short angle iron are provided with reserved bolt holes. The reinforced-concrete-prefabricated columns on the upper floor and the lower floor are connected through the short angle iron for connection by means of the high-strength friction type bolts. The reinforced-concrete-prefabricated beams are connected with the reinforced-concrete-prefabricated columns through the short angle iron at the ends of the reinforced-concrete-prefabricated beams and the short angle iron for connection at ends of the short beams of the reinforced-concrete-prefabricated columns by means of the high-strength friction type bolts. Fiber reinforced cement-based composite material is poured in the beam column connection region, and the assembling integrated frame structure is formed. The short angle iron connection type reinforced concrete assembling integrated frame and the construction method have the advantages of being clear and reliable in internal force transmission, simple and reasonable in stress, convenient, fast and efficient in construction method, good in whole performance, good in anti-seismic property and the like.

The invention relates to a lattice type single-row reinforcement T-shaped cross section concrete column and a construction method thereof, and belongs to the field of damping and disaster prevention. The lattice type single-row reinforcement T-shaped cross section concrete column of the invention comprises concrete (1), a ladder lattice-shaped common reinforcing steel bar net (2), lattice single-row reinforcement nets (3), and binding reinforcing steel bars (4). The T-shaped column reinforcing steel bar framework is the T-shaped structure. The three pieces of the lattice single-row reinforcement nets (3) are welded into the three limbs of the T-shaped structure. The ladder lattice-shaped common reinforcing steel bar net (2) is vertically welded on the end parts of the three limbs of the T-shaped lattice single-row reinforcement net. The binding reinforcing steel bars (4) are vertically welded on the horizontal level reinforcing steel bar center position of the common reinforcing steel bar net (2), and are arranged equidistantly along the column height direction. According to the present invention, the lattice type single-row reinforcement T-shaped cross section concrete column adopts the single-row reinforcement, such that the construction is simple, and the use amount of the reinforcing steel bars is less; the lattice reinforcing steel bar sheets are welded to form the reinforcement, such that the industrial production is easily achieved; the lattice reinforcement is adopted, and the shear resistance of the diagonal web reinforcement is good, such that the brittle shear failure of the special-shaped cross section short column can be prevented, and the seismic ductility of the column is improved.

The invention discloses an anti-buckling support with circumferential prestressing, a method and application. The anti-buckling support comprises a support core material, an inner sleeve and an outer sleeve, wherein a steel pipe is used as the core material; the inner sleeve is used for supplying circumferential prestressing to the core material and is arranged in the support core material; the outer sleeve is used for improving the local stable bearing capacity and overall stable bearing capacity of the support core material and is arranged outside the support core material; and a friction reducing layer is respectively arranged between the support core material and the inner sleeve as well as between the support core material and the outer sleeve so as to reduce the limit of the inner and outer sleeves to axial deformation of the core material. According to the anti-buckling support, the self weight of the support is small, and although the cross section of the structure is composed of three layers of steel pipes, the combined section is still a hollow section; compared with a solid section, the component weight is greatly reduced, and the hysteretic behavior is good; the support core material, the outer sleeve and the inner sleeve are made of uniform steel products, so that the strength is high, the durability is good, and the hysteretic behavior is good; and the circumferential prestressing is applied to the core material so as to reduce the axial bearing capacity of the core material, so that the core material is easier and faster to yield, the shock resistance is improved, and the energy consumption is reduced.

The invention provides an integrally assembled frame adopting U-shaped steel transverse connection and a construction of the said frame. The integrally assembled frame comprises a reinforced concrete prefabricated pillar (1), a reinforced concrete prefabricated beam (2) and U-shaped steel (4), wherein the reinforced concrete prefabricated pillar (1) is provided with a short beam section (3). The end of the short beam section (3) of the reinforced concrete prefabricated pillar (1) is provided with a first bolt hole, a web of the U-shaped steel (4) is provided with second bolt holes (52), and two ends of the reinforced concrete prefabricated beam (2) are provided with third transverse bolt holes (53). The reinforced concrete prefabricated pillar (1) and the reinforced concrete prefabricated beam (2) are connected by the U-shaped steel (4) and transverse high-intensity frictional bolts (6), and engineered cementitious composite is cast in a connection area, so that the integrally assembled frame is formed. The integrally assembled frame has the advantages of clear and reliable internal force transmission, simplicity and reasonableness in stress, convenience and efficiency in construction method, high integral performance and good anti-seismic property and the like.

The invention discloses a seismic structure of a prefabricated spliced pier internally provided with replaceable viscous damper and energy-consuming reinforcing steel bars and a construction method thereof. The seismic structure of the pier comprises a prefabricated concrete pier stud section provided with a '['-shaped groove a, a double-wall steel sleeve for embedding the upper and lower portionsof the prefabricated concrete pier stud section, a positioning reinforcing steel bar for positioning the pier section, the viscous damper mounted in the '['-shaped groove a and the energy-consuming reinforcing steel bars. The viscous damper and the energy-consuming reinforcing steel bars play a role of a safe air bag in the structure, and have relatively high energy-dissipating capacity under theaction of an earthquake. The viscous damper and the energy-consuming reinforcing steel bars also play a role of a fuse and are centralized positions of seismic damage and can be replaced. By adoptingthe seismic structure, the seismic performance of the prefabricated spliced pier can be improved and meanwhile, the damaged pier can be also quickly repaired.