1053 results about "Civil/structural engineers" patented technology

The invention relates to an all-steel buckling-preventing energy-consuming brace, which belongs to the technical field of structural engineering. The brace is characterized in that the buckling-preventing energy-consuming brace consists of four hot-rolled groove-shape section steels and a kernel linear steel plate; the four hot-rolled groove-shape section steels are connected through high-strength bolts to form a peripheral constraint component capable of forming a constraint mechanism to the kernel linear steel plate; and a certain gap is reserved between the kernel steel plate and the peripheral constraint component and is coated with unbonded material so as to guarantee the smooth slippage between the two and play a role in anticorrosive protection. The all-steel buckling-preventing energy-consuming brace provided by the invention can provide good effect of resisting lateral force for a plurality of high-rise steel structures, and can achieve total cross-section yielding under the action of large earthquakes so as to effectively consume energy. In addition, as the buckling-preventing energy-consuming brace is an all-assembled component, the brace has the advantages that the brace is easy to machine and install, capable of effectively reducing structural construction cost and excellent in performance.

The invention relates to an easily repaired steel-structure beam-column node, in particular to an easily repaired steel-structure beam-column node which is applied in the field of structural engineering and particularly used in high-intensity earthquake-proof areas. The node comprises an upright H-shaped steel column and an H-shaped steel beam of which the end part is vertically connected on a side wing plate of the H-shaped steel column, and is characterized in that: connecting ends of a belly plate of the H-shaped steel beam and the side wing plate of the H-shaped steel column are connected by a reinforced connecting plate closely contacted with the belly plate of the H-shaped steel beam and high-strength bolts penetrating the reinforced connecting plate, the reinforced connecting plate is in welding connection with the side wing plate of the H-shaped steel column, and both sides of the connecting end of a bottom side wing plate of the H-shaped steel beam are in locked connection with the H-shaped steel column by a T-shaped connecting plate and penetrating high-strength bolts respectively; and the T-shaped connecting plate is transversely arranged, upper and lower ends of the T-shaped connecting plate in the vertical direction are in locked connection with the side wing plate of the H-shaped steel column by a washer and the penetrating high-strength bolts respectively, a transverse plate of the T-shaped connecting plate is supported on the lower part of the bottom side wing plate of the H-shaped steel beam and locked by the penetrating high-strength bolts. The structure can effectively avoid brittle failure, has good ductile fracture characteristic, and can be widely applied to structures of earthquake areas, particularly the high-intensity earthquake-proof areas; and the easily repaired steel-structure beam-column node of the invention also has the advantages of convenient construction and convenient after-earthquake repairing.

The invention involves a kind of data organization project area of technology to guard against the flexure to consume energy the steel plate shearing force wall. Its characteristic causes to state the shearing force wall to inlay the steel plate and two sides periphery concrete lap by in is composed; In states inlays the steel plate to use the low yield point high ductility steel products or the high strength high ductility steel products; States the periphery concrete lap to use the common concrete slab; States the edge component is composed by the marginal beam and the edge column; In states inlays the steel plate with to state between the concrete lap through to penetrate three blocks the bolts or the pre-stressed bold fastening, in states on the concrete lap to open the ellipse hole in order to the bolt passed through also has the enough slipping space; In states the concrete lap to open the hole site with to bury the trough section to give strengthens. And is strengthening the channel steel the corresponding position to open oval hole. The invention provides guards against the flexure steel plate shearing force wall is the high-rise construction structure or other structures a kind of new anti- lateral force components, it has the earthquake resistance performance well, the ductility is high, consumes energy stagnates winds full and so on the characteristic, is a kind of superior earthquake resistance consumes energy the component.

The invention relates to an assembly type beam-column node connection device with a function recovery effect, and belongs to the field of structure engineering. The assembly type beam-column node connection device with the function recovery effect consists of a round steel pipe column with a cantilever beam section, a general beam section and a connection device for the round steel pipe column and the general beam section. According to the node connection device, welded parts are all finished in a factory, so that the weld seam quality and the machining precision can be more easily controlled; the round steel pipe column with the cantilever beam section and the general beam section are assembled by adopting a high-strength bolt and a connection plate on site, so that the construction speed is greatly increased and the construction quality is greatly improved; meanwhile, the general beam section can be arranged on the connection plate at the lower part of the cantilever beam section, so that the difficulty in construction is lowered and the field assembly and positioning are easy; a node is used for both beam end reinforcement and cover plate connection weakening; through reasonable parameter design, double energy consumption of frictional sliding of the bolt and plastic deformation of the connection plate and the bolt can be realized and a plastic hinge can be transferred to the connection plate; and the function of the structure can be recovered only by replacing the connection plate after earthquake.

This invention relates to one steel concrete structure anti-erosion test method in structure engineer field, which comprises the following steps: a, sensor processing to parallel two steel bars in same materials for fixing and sticking the stress fiber grating to top end and putting one free temperature compensation fiber grating connected by the compensation fiber and sealing on shell; b, positioning the sensor and drilling it into concrete with stress fiber and temperature compensation connected to spectrum; c, monitoring by periods to test grating wave length volume and speed to infer anti-erosion degree and speed.

The invention discloses a method for constructing an additional multi-layer basement for an original building, which comprises the steps of (1) carrying out underpinning of the original building and finishing the first underpinning; (2) reinforcing the structure of the original building and enhancing the overall rigidity thereof; (3) constructing the roof structure of the additionally built basement; (4) pressing the structure engineering piles of the additionally built basement and finishing the second underpinning; (5) reversely constructing the first layer under ground and cropping piles of the first underpinning in the original building foundation; (6) reversely constructing the whole additionally built underground structure; and (7) finishing all basement structures. The method has the advantages that: the method is capable of realizing effective protection of historical buildings to the most extend, requires no conventional movement or relocation of the historical buildings, does not affect the construction of the newly built basement while preserving and protecting the historical buildings, is beneficial to the development and construction of cities, is capable of shortening construction period effectively, saves construction cost and forms a whole-set of constructing technologies and methods with great social and economic benefits.

This is an anti-knock node for steel frame beam. It is by substituting traditional steel material on the beam end and web by an metal of strong endergonic ability, and adding X shape low carbon armor plate to the beam end to form an endergonic plasticity node.

The invention relates to a novel tuned particle mass damper and belongs to the technical field of shock resistance and absorption of structural engineering. The novel tuned particle mass damper comprises a damper fixing plate, mass block sliding cavities, mass blocks, connecting springs, viscous damper units, connecting bars, a damper cavity, damper chamber separating plates, multi-stage damping particle groups. Four sliding cavities are arranged on the damper fixing plate; four mass blocks are arranged inside the four sliding cavities, perform low-damping movement inside the internal tracks of the sliding cavities and are connected with the damper fixing plate through the viscous damper units and the springs and connected with the damper cavity through the connecting bars. The chamber separating plates are arranged inside the damper cavity, a single layer of the multi-stage damping particle groups are uniformly arranged on every chamber separating plate. Under the action of wind and/or earthquakes, the damper cavity moves opposite to a basic structure on the plane and generates control force opposite to that of the basic structure, internal damping particles collide fiercely to rapidly dissipate system mechanical energy and further improve system damping effects.

The invention belongs to the structural engineering technical field, and more particularly relates to a structural system which cuts an energy-consumption steel plate wall in high level and vertically. The structural system consists of a wall, the two sides of which are connected with thin steel plates, which is taken as an energy-consumption component and other optional structural components; the system is provided with a steel plate wall which is connected with the two sides of a column in a run-through way in a certain intermediate span, and the steel plate wall is used in vertical cutting energy-consumption when the structure suffers from dynamic action such as earthquake or oscillating wind, etc. The horizontal anti-lateral force system of the structure can be the system of frame support, a frame steel plate wall, a frame combined wall, a concrete shear wall and a concrete shear cylinder, etc. The wall, the two sides of which are connected with thin steel plates, refers to the steel plate wall, the two sides of which are connected with the column or the wall; the structural system which cuts an energy-consumption steal plate wall in high level and vertically which is provided by the invention is a multiple high-level structural system which is suitable for an earthquake region; has the advantages of definite failure mode, high bearing capacity, large anti-lateral stiffness, concentrated damage and being convenient for reparation, etc.; has good earthquake-resistance performance and good capacities of tensibility and hysteresis energy-consumption; therefore, the structural system which cuts the energy-consumption steel plate wall in high level and vertically is a superior anti-earthquake and energy-consumption component.

The invention relates to a drum-type omni-directional turned mass damper, belonging to the technical field of vibration resistance and absorption in structural engineering, and comprising a top cover,an outer-wall sleeve connected with the top cover, a sleeve-type structure arranged inside the outer-wall sleeve, an internal horizontal baffle and an external horizontal baffle. The sleeve-type structure comprises an inner-ring core cylinder, an outer-ring core cylinder, a steel ball holder and a steel ball, wherein the inner-ring core cylinder is arranged in the outer-ring core cylinder, the outer surface of the inner-ring core cylinder is fixed with the steel ball holder that is internally equipped with the steel ball. A viscous damper is connected between the outer-ring core cylinder andthe outer-wall sleeve, the lower end faces of the inner-ring core cylinder and the outer-ring core cylinder are both connected with the internal horizontal baffle via a universal rolling spherical hinge, and a spring is connected between the internal horizontal baffle and the external horizontal baffle which is further fixedly connected with a substructure. The damper can be operable for turning energy consumption and vibration damping in all directions of the structure, namely, two horizontal directions, vertical direction, and two directions of reversing and swinging.

Expansion-adapted mounting and electrical contacting of laser diode elements are connected with one another in terms of structural engineering such that the laser diode elements can be stacked or arranged laterally in one plane for producing vertical diode laser arrangements with low production complexity. The upper and the lower layers of a heat-distributing multilayer substrate for a diode laser subelement, between which a separating layer is disposed, contain metal strata regions arranged spaced from one another of which for forming strata region pairs each strata region of the upper layer is joined electrically conducting to a strata region of the lower layer. The separating layer contains at least one electrically insulating stratum made of non-metallic material and the sum of the thicknesses of metallic strata in the multilayer substrate exceeds the sum of the thicknesses of non-metallic strata at least in a partial region perpendicular to the mounting surface for at least one laser diode element.

The invention relates to the technical field of structural engineering, in particular to a double-sleeve steel-structure beam-column joint and an installation method. The double-sleeve steel-structure beam-column joint comprises steel pipe columns and steel beams and further comprises inner sleeved steel pipes, circular sleeves, rectangular sleeves, a transfer connecting plate, energy dissipation steel plates, short beams and ratchet wheel connecting pieces, threaded holes are formed in the inner sleeved steel pipes, and bolt holes are formed in the circular sleeves, the rectangular sleeves and the steel pipe columns; and the inner sleeved steel pipes, the circular sleeves, the rectangular sleeves and the steel pipe columns are connected through long bolts, the steel pipe columns are further connected with the transfer connecting plate, the upper and lower sides of the transfer connecting plate are connected with the short beams through the upper energy dissipation steel plates and the lower energy dissipation steel plates correspondingly, and the short beams are further connected with the steel beams through the upper and lower energy dissipation steel plates and the ratchet wheel connecting pieces. According to the double-sleeve steel-structure beam-column joint and the installation method, by arranging multi-stage energy dissipation points ingeniously, the problems that the destructive effect of an earthquake on a building structure is large, and the building structure is difficult to recover rapidly are solved; and the joint columns are connected by adopting the core pipes, the double-sleeves and the long bolts, the bearing capacity is superior to the bearing capacity of an existing beam-column joint mode, and the shear capacity of the whole joint is enhanced.

The invention relates to aramid fiber enhanced wood-plastic composite material and a preparation method thereof, relating to fiber enhanced wood-plastic composite material and the preparation method thereof. The invention solves the problem that the existing wood-plastic composite material has bad comprehensive mechanical property. The wood-plastic composite material comprises thermoplastic, wood fiber material, lubricant, bulking agent and graft modification aramid fiber. The preparation method of the invention is as follows: 1. weighing raw materials; 2. preparing premixing materials; 3. melting, extruding and molding the premixing materials to obtain the fiber enhanced wood-plastic composite material. The preparation method utilizes carbon-carbon double bond and silane alkyl on the surface of modified aramid fiber and polyolefin and wood flour to form chemical bonds so that aramid fiber and polyolefin has good compatibility, and effectively enhances the interface binding force of the composite materials; the aramid fiber enhanced wood-plastic composite material simultaneously has high strength, high tenacity, and good comprehensive mechanical property. The method can be used for producing the wood-plastic composite material with high performances such as structural engineering materials, etc.

The present invention relates to one kind of adjustable low yield point composite metal damper, and belongs to the field of shock resisting structural engineering technology and wind resisting technology. The adjustable low yield point composite metal damper consists of one first energy dissipating metal plate of material with yield strength greater than 200 MPa, one second energy dissipating metal plate of material with yield strength lower than 200 MPa, two horizontal connecting steel plates fixed to building structure, angle steel, high strength screws and one hollowed part. The first energy dissipating metal plate and the second energy dissipating metal plate are staggered and fixed between the horizontal connecting steel plates. The present invention is suitable for use in the crossed support point and the joint between beam and wall or column. The present invention has high energy dissipating capacity and other advantages.

The invention relates to an integral two-way partial one-way steel-concrete composite floor and a construction method thereof, belonging to the field of structural engineering. The invention consists of an integral two-way steel main girder, a local one-way steel secondary girder and a concrete slab. The two-way steel main girder is an I-shaped section or a box-shaped section; the local one-way steel secondary beam is an I-shaped section; The upper flanges of main beams and unidirectional steel secondary beams cover the grids between steel beams. The overall two-way partial one-way steel-concrete composite floor of the present invention can fully exert the material characteristics through the combination effect, and realize the force effect of the overall two-way support. On the basis of ensuring the mechanical performance of the structure, the number of nodes is reduced to further facilitate the construction of the steel structure.

The invention relates to a horizontal seamed energy dissipation prestressed shear wall structure, belonging to the technical fields of shock resistance and shock absorption in structure engineering. The shear wall structure comprises a reinforced concrete wall, an energy dissipation device, connecting steel plates, horizontal seams, prestressed reforcing steel, high-strength bolts, anchoring accessories and a foundation. The horizontal seams are arranged in the shear wall structure, and a connecting member or device is used for enhancing the energy dissipation capacity; and simultaneously, vertical high-strength prestressed reforcing steel are arranged in the shear wall to strengthen the connection performance of the structure and improve the rigidity of the structure. Thus, the horizontal seamed energy dissipation prestressed shear wall structure is suitable for industrial and civil buildings in the region where the seismic fortification intensity is higher than 6. The invention has the advantages of simple sturcture, low cost of required materials, good hysteretic energy dissipation capacity, good self-resetting characteristic, small residual structural deformation and no damage.

The invention discloses a fabricated beam-column bolt joint connection device with a cover plate and double flanges, and belongs to the technical field of structural engineering. The fabricated beam-column bolt joint connection device comprises an upper column flange plate (2), an upper column square-steel tubular column (1), column base flange plates (3) and (5), a column base square-steel tubular column (4), a shear plate (8), a lower column flange plate (6), a lower column square-steel tubular column (7), an H-shaped steel beam C, an attaching plate D and a clamping plate E. The upper square-steel tubular column and the lower square-steel tubular column are welded to the flange plates integrally in a factory. A column base in the middle is formed by integral welding of the upper flange plate, the lower flange plate, the middle square-steel tubular column and the shear plate in the factory. The welded portions can be completed in the factory, bolts are adopted for on-site assembly and are fastened conveniently and quickly, construction speed and quality are increased greatly, and the fabricated beam-column bolt joint connection device is suitable for the development of fabricated steel structures. According to the fabricated beam-column bolt joint connection device, joints are semi-rigid, with high ductility and bearing capability; clamping plates are made from steel material with low strength, so that earthquake energy can be dissipated fully and post-earthquake restoration is facilitated.

The invention relates to a built-in micro-particle type tuning and friction energy dissipation damper, belonging to the field of structural engineering earthquake proofing and damping and wind resistance technology, and comprising that: a box body connected with a building structure floor member or a beam column member, damping particles placed in the box body, an internal clapboard and a connecting member of the box body; the damping particles are evenly stacked in a space formed by the box body, the internal clapboard and the connecting member in appropriate volume according to actual conditions; under the action of wind or earthquake, the whole box body can tune the natural vibration characteristic of the structure, and multidimensional vibration, friction and collision can fully occur between each damping particle as well as between the damping particles and the internal clapboard. The built-in micro-particle type tuning and friction energy dissipation damper of the invention has simple construction, convenient installation and adjustment, agile reaction and functions of multidimensional tuning damping and friction and collision damping, and can effectively reduce the reaction of the original structure under the dynamic action of wind or/and earthquake and the destructiveness of the original structure.