52results about How to "Eliminate residual deformation" patented technology

The invention relates to a joint for building structures, relates to a self-centering buckling-restrained brace beam-column joint and aims to solve the problem that structural application functions of an existing self-centering buckling-restrained brace in a diagonal placement scheme may be influenced and the problem that existing steel-frame beam-column joints are mostly connected rigidly or semi-rigidly, the joint of such structure easily suffers brittle failure, and after an earthquake, dangers still exist and continual application is unavailable even after the building does not collapse. Gaps are provided among columns and beams, a plurality of column stiffening ribs are distributed on the columns, the beam stiffening ribs are distributed on the beams, two connecting plates are disposed on upper and lower flanges of one beam; each connecting plate is L shaped and is provided with a plurality of bolt holes; a vertical segment of each connecting plate is connected with a column plug through bolts; each bolt penetrate a corresponding bolt hole so as to connect the connecting plates and the girder; a self-centering buckling-restrained supporting member is correspondingly disposed on the outer side of each connecting board.

The invention discloses a fiber pre-draw-rod type self-centering round tube buckling restrained support which comprises a core energy-consumption round tube, an inner restrained round tube arranged in the core energy-consumption round tube, an outer restrained round tube sleeved outside the core energy-consumption round tube, two end plates arranged at two ends of the energy-consumption round tube, a fiber drawing rod for connecting the two end plates and connection parts connected with the end plates. The inner wall on one side of the core energy-consumption round tube is connected with one end of the inner restrained round tube, the outer wall on the other side of the core energy-consumption round tube is connected with one end of the outer restrained round tube, small holes distributed in array mode are arranged on the tube wall of the core energy-consumption round tube, a plurality of groove openings are arranged at two ends of the core energy-consumption round tube, notches matched with the end portion of the core energy-consumption round tube are arranged on the end plates, the end plates are inserted into the groove openings to be contacted with the end portions of the inner restrained round tube and the outer restrained round tube, the fiber drawing rod is arranged in the inner restrained round tube, prestress is exerted to tension the end plates at two ends, and the connection parts are both connected on the outer sides of the two end plates.

The invention provides a self-resetting steel support with a pre-pressing disc spring and a friction damper. The self-resetting steel support comprises a resetting system and a friction energy consumption system, wherein the resetting system comprises a left anchoring plate and a right anchoring plate; a first high-strength bolt and a plurality of second high-strength bolts penetrate the two anchoring plates; the composite combined disc spring is arranged at the position, between the two anchoring plates, of the first high-strength bolt in a penetrating manner; the two ends of the composite combined disc spring are anchored to the left anchoring plate and the right anchoring plate correspondingly; nuts at the two ends are screwed to extrude the left anchoring plate and the right anchoring plate, and therefore pre-tightening force is applied to the composite combined disc spring; the friction energy consumption system comprises a left friction sleeve and a right friction sleeve; the left friction sleeve penetrates the right friction sleeve or the right friction sleeve penetrates the left friction sleeve to form friction, and reciprocating motion and limiting are achieved through connection of a round hole, a long hole in the penetrating direction and a third high-strength bolt; and the interiors of the left friction sleeve and the right friction sleeve which are combined are enough to contain the resetting system. The self-resetting steel support has the beneficial effects that functions can be recovered, stress is reasonable, the structure is simple, and manufacturing is convenient and fast.

The invention discloses a post-tensioned prestressing self centering steel plate shear wall structure, which comprises at least one structural unit, wherein the structural unit comprises two steel framework posts, a T-shaped steel beam, a self centering connecting element and a steel plate shear wall, wherein the T-shaped steel beam is connected with the upper ends of the two steel framework posts, the self centering connecting element is positioned at the lower side of the T-shaped steel beam and is connected with the two steel framework posts, the steel plate shear wall is positioned under the self centering connecting element, the self centering connecting element comprises an inner sleeve pipe, an outer sleeve pipe, an end plate, a pre-stretching rod and a connecting head, the inner sleeve pipe is sheathed by the outer sleeve pipe, the end plate seals the end parts of the inner sleeve pipe and the outer sleeve pipe, the pre-stretching rod is arranged in the inner sleeve pipe and is anchored on the end plate, the connecting head is connected with the end part of the inner sleeve pipe, the length of the upper wing edge of the T-shaped steel beam is greater than the length a the web plate, the lower end of the web plate of the T-shaped steel beam is connected with the upper side surface of the outer sleeve pipe, and the lower side surface of the outer sleeve pipe is connected with the upper side surface of the steel plate shear wall. The post-tensioned prestressing self centering steel plate shear wall structure has the advantages that the plastic deformation of the steel plate shear wall can be effectively eliminated, the lateral deformation coordination of a framework and a floor slab can be ensured, and the restoring cost and the restoring difficulty of the engineering structures after the earthquake are greatly reduced.

The invention relates to an orthogonal plywood shear wall-concrete core tube mixed lateral-load-resistance system. The system includes an orthogonal plywood shear wall, a concrete core tube, replaceable energy-dissipation connectors, a concrete foundation, prestressing swing supports, a first post-tensioned unbonded prestressing bar, a second post-tensioned unbonded prestressing bar, a first steelshim and a second steel shim. The orthogonal plywood shear wall is connected with the concrete core tube through the several replaceable energy-dissipation connectors, the concrete core tube is connected with the concrete foundation through the first steel shim, the second steel shim and the several prestressing swing support, the first post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device, and the first post-tensioned unbonded prestressing bar runs through the orthogonal plywood shear wall longitudinally and is fixed by an anchorage device and the second post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device. Compared with the prior art, the system can effectively reduce the damage of orthogonal plywood wallboards and concrete shear walls in an earthquake, energy-dissipation components are easily replaced, and the difficulty and cost of post-earthquake repair can be reduced.

The invention discloses a controllable energy consumption swing column foot. The controllable energy consumption swing column foot comprises a reinforced concrete column on the upper portion and a cup rim foundation on the lower portion, a steel pipe concrete conversion head is arranged between the cup rim foundation and the reinforced concrete column, and disc spring self-resetting buckling-restrained energy consumption devices are arranged at the four corners of the steel pipe concrete conversion head. According to the controllable energy consumption swing column foot, partial constraint between the column bottom and the foundation is relieved, a self-resetting device and an energy consumption device are integrated, the novel controlled swing column foot is designed, the anti-seismic performance of a concrete frame structure is improved, passive control over the structure under the earthquake action is achieved, the purpose that the function of the structure can be recovered is achieved, and rapid development of the concrete frame-swing column structure is promoted.

The invention discloses a self-resetting energy consumption inhaul cable support which comprises a pulley, a pulley base, a prestress reset rib, an anchorage device, a limiting plate, a sliding frame, a bottom plate, a high-strength steel cable, a friction plate, a steel base plate and a connecting plate. The pulley is fixed to the pulley base. The pulley base is fixed to a main structure through a bolt. One end of the prestress reset rib is anchored to the limiting plate through the anchorage device. The other end of the prestress reset rib winds around the pulley, and builds prestress through a post-tensioning method to be connected with the sliding frame. The self-resetting energy consumption inhaul cable support has the advantages that the resetting capability of the support is enhanced exponentially, or the selection range of the reset rib material is widened exponentially, the structure complexity degree of the support is simplified, and the working performance of the support is ensured; 2, the cross section of the support is reduced, and therefore the earthquake effect is effectively reduced; 3, the yield stiffness designability is provided for the support.

The invention discloses a self-resetting SMA-viscous vibration reduction damper. The damper comprises a head connecting lug ring, a piston rod, a head sealing cover, a piston, a viscous damping medium, a cylinder body outer wall, a middle sealing cover, a spring pressing plate, an SMA spring, a guide hollow rod, a tail sealing cover and a tail connecting lug ring. The self-resetting SMA-viscous vibration reduction damper provided in the invention has advantages and positive effects that 1, most of input vibration energy can be dissipated; 2, the SMA spring can dissipate low-frequency or ultrahigh-frequency vibration energy, and meanwhile, the piston can be recovered to an original position to eliminate residual deformation; 3, the rigidity of the damper can be adjusted by adjusting pre-pressure of the pre-pressing spring as required; and 4, mounting and dismounting are simple and maintenance is easy.

The invention relates to the technical field of wood processing, in particular to a restoring method of a bent and raised veneer. The restoring method comprises the steps of heating, steaming and drying. Compared with the prior art, the restoring method adopts a process, which integrates restoration and straightening with secondary drying, to restore and dry the bent and raised veneer. A high-temperature and high-humidity method is adopted for eliminating the residual deformation inside the width-deformed veneer and drying the veneer which restores the straightness in the conditions of constant temperature and constant humidity. The restoring method has the advantages of short production period, simple process, low production cost, no wood color deepening, no waste water discharge, no environment pollution, strong practicality, and the like.

The invention discloses a memory alloy self-restoring heat dissipation damper. A first inner pulling and pressing board and an outer pulling and pressing board capable of sliding relatively are arranged. A self-restoring structure is formed by a vertical blocking board and a limiting blocking board set so as to convert relative motion of the inner pulling and pressing board and the outer pulling and pressing board to a pulled state of memory alloy rods. Damping cushion is realized by utilizing material performance of the memory alloy rods. When the stress is too large, friction layers betweenthe inner pulling and pressing board and the outer pulling and pressing board act in common so as to dissipate energy input of the structure, and dissipation of great energy is realized through friction deformation, and absorption of dissipated energy by stressed parts in a building structure in an earthquake is reduced, so that an effect of protecting the building structure is realized. The memory alloy rods in the damper can enable the damper after an earthquake to restore to an initial state, so that residual deformation of a building is reduced and even eliminated after the earthquake. Theinvention can provide comparatively large damping force and utilizes the memory alloy rods and the friction layers to dissipate energy in a graded manner. The cost of the damper is reduced and structural energy dissipation requirements of different phases are met.

The invention discloses a field test method of influence on vertical bearing capacity of a pile foundation by a horizontal cyclic load. The method eliminates influence on test results by the foundation soil plastic deformation to the greatest extent through such methods as high-compressibility cushion layers at the bottoms of test piles and vertical cyclic loading; when the vertical displacement of a test pile foundation meets requirements, a final vertical loading test result is used as a reference parameter; then, a horizontal load is applied to the upper parts of the test piles for circulation according to the requirements; then, according to code requirements, the vertical loading is performed, and each stage of test data is recorded; and finally, twice vertical loading test pile testing results before and after horizontal loading are compared to calculate the influence on the vertical bearing capacity of the pile foundation by the horizontal cyclic load. The method particularly can effectively guide design and construction of such large engineering pile foundations as bridges and wharfs for such special geologies as coral reefs and diatomaceous earth in Southeast Asia, and ishigher in reference value.

An energy-dissipating damping device suitable for the mortise-tenon joints of the timber structures of ancient buildings comprises connecting parts II and a connecting part III, wherein the upper endsof the connecting parts II are connected with connecting parts I through bolts I to form closed structures fixed around a wooden beam; two ends of the connecting part III are connected through a boltII to form a closed structure fixed around a wooden pillar; the connecting part III is mounted on a steel support frame with a horizontal steel plate; the lower ends of the connecting parts II are connected to the upper surface of a rectangular steel tube; a viscous friction damper is arranged between the upper surface of the steel support frame and the lower surface of the rectangular steel tube; and metal energy-dissipating rods run from the lower surface of the rectangular steel tube to the horizontal steel plate of the steel support frame through the viscous friction damper. Under the action of earthquake, relative sliding occurs between all layers of the viscous friction damper to drive the metal energy-dissipating rods to bend to dissipate energy together. The energy-dissipating damping device has the advantages of strong energy-dissipating capacity and resistant-lateral rigidity, simple structure, convenient mounting, easy replacement and so on.

The invention discloses a rolling isolation bearing. The rolling isolation bearing comprises a rolling plate and a bottom box, and the bottom box is provided with an open top. Grooves parallel to theY axis are formed in two opposite sides of the bottom of the bottom box, and the grooves are separately provided with preloaded spring sets. A boss is arranged between the grooves, a plurality of horizontal rollers parallel to each other are arranged on the upper surface of the boss, and the axes of the horizontal rollers are parallel to the X axis. The rolling plate is mounted on the bottom box,and the bottom surface of the rolling plate is in contact with the horizontal rollers. When the rolling isolation bearing is subjected to the lateral load force, the rolling plate is in contact with the horizontal rollers, the damage of the lateral load force to the upper structure of a building is dispersed by the slip generated between the rolling plate and the bottom box. When the bottom box isdeformed by the lateral load force, the preloaded spring sets can provide elastic force to overcome the deformation, so the rolling isolation bearing is not prone to generating residual deformation after being subjected to the lateral load force, and the preloaded spring sets can drive the rolling plate to reset.

The invention relates to the technical field of buildings, provides an intercolumnar connecting structure capable of recovering the function, and aims to solve the problem in the prior art that a steel structure column body has residual deformation. The intercolumnar connecting structure comprises a first connecting part, a second connecting part, an energy consuming component, an anchoring plateand a prestressing force wire rod; the first connecting part and the second connecting part are arranged at the end part of a column body to connect upper and lower columns; the prestressing force wire rod is connected with the upper and lower columns through the anchoring plate and is used for pulling the upper and lower columns after an earthquake to enable the upper and lower columns to realizeself-reset; the energy consuming component is arranged between the first connecting part and the second connecting part to consume energy; and when the energy consuming component is damaged, the damaged energy consuming component can be detached to change a new energy consuming component. The intercolumnar connecting structure meets the aseismic design requirement, has the self-reset capacity toresist residual deformation, and can eliminate residual deformation of the energy consuming component through changing the energy consuming component generally to solve the problem in the prior art about residual deformation of the steel structure column body.

The invention provides a self-returning lead extruding damper. The self-returning lead extruding damper is formed by sequentially hinging for groups of damping units having the same structure through connecting hinge pins; each damping unit comprises an upper laminate, a medium laminate and a bottom laminate which are sequentially connected and arranged through hinge pins; an upper laminate body, a medium laminate body and a bottom laminate body are all of circular structures; a connecting hinge is integrally formed at the side edge of each circular structure; the upper laminate and the bottom laminate have the same structure that is a disc-shaped structure provided with a central through hole in each circular structure; the circular structure of the medium laminate is a ring shaped structure; a limiting bulge which is convex to the center of circle is arranged on the inner wall of the ring of the ring shaped structure of the medium laminate; a star shaped drawing part structure is arranged in the ring of the ring shaped structure of the medium laminate and between the upper laminate and the bottom laminate; an arc-shaped extruding lead block which his concentric with a central hole is arranged between two adjacent drawing plates of the star-shaped drawing part structure; a disc shaped spring is arranged between two sides of each drawing plate and the adjacent limiting bulge. The self-returning lead extruding damper can be widely applied to energy consumption damping and limiting control of a building.

The invention relates to a correction method of residual deformation of a thin flat-plate aluminium alloy casting. In order to overcome the defect of residual deformation of the thin flat-plate aluminium alloy casting, correction is performed with a correction fixture and far-infrared tunnel furnace combined method, the thin flat-plate aluminium alloy casting is mounted in a correction fixture, placed in a far-infrared tunnel furnace and subjected to preheating, constant-temperature treatment and cooling aging treatment, residual deformation of the thin flat-plate aluminium alloy casting is corrected, residual stress is eliminated, and the stability and the reliability of the shape of the thin flat-plate aluminium alloy casting are effectively improved; the planeness error of the thin flat-plate aluminium alloy casting after correction is equal to or smaller than 0.1 mm, residual deformation of the thin flat-plate aluminium alloy casting is effectively eliminated, the technology of the correction method is advanced, data is accurate and detailed, the correction fixture is advanced and reliable, the structure is compact, the accuracy is high, and the correction method of residual deformation of the thin flat-plate aluminium alloy casting is very advanced.

The invention relates to a correcting method for residual deformation of a magnesium alloy thin flat plate casting. To overcome the defect of residual deformation of the magnesium alloy thin flat plate casting, correction is carried out through a method of combination of a correction clamp and an infrared tunnel kiln, the magnesium alloy thin flat plate casting is installed in the correction clamp and placed in the infrared tunnel kiln, preheat, constant-temperature treatment and cooling aging treatment are carried out, the residual deformation of the magnesium alloy thin flat plate casting is corrected, residual stress is eliminated, and stability and reliability of the shape of the magnesium alloy thin flat plate casting are effectively improved. After correction, the planeness error of the magnesium alloy thin flat plate casting is smaller than or equal to 0.05 mm, and the residual deformation of the magnesium alloy thin flat plate casting is effectively eliminated. The correcting method is advanced in technology, data are accurate and full, the correction clamp is advanced and reliable, the structure is compact, precision is high, and the correcting method is a very advanced correcting method for residual deformation of the magnesium alloy thin flat plate casting.

The invention belongs to assembly technology, and relates to improvement on an actuator part inner bore combined seal ring component shaping method. The method comprises a mechanical shaping step, and is characterized in that: a dividing bushing component or a main piston component is subjected to heat treatment, heated in an oven to 70+/-5 DEG C, kept at the temperature of 70+/-5 DEG C for 1 to 2 hours, taken out, and naturally cooled to room temperature. The method has the advantages of eliminating residual deformation of the mechanically shaped fluoroplastic seal ring, and improving the survival rate of product assembly.