31results about How to "Remarkable effect of shock absorption and isolation" patented technology

The invention belongs to the technical field of rubber and discloses an ultra-high damping rubber composite material and a preparation process of the rubber composite material. The preparation process disclosed by the invention is mainly technically characterized by comprising the following steps of: adding short fibers, carbon black, petroleum resin, a plasticizer, a vulcanizing agent, an active agent, an accelerant and an anti-aging agent in rubber; and mixing the components in an internal mixer and then vulcanizing in a flat vulcanizing machine. According to the ultra-high damping rubber composite material disclosed by the invention, a predetermined amount of short fibers, carbon black and petroleum resin are uniformly dispersed in a rubber matrix; compared with the common high-damping material, the damping coefficient of the ultra-high damping rubber composite material disclosed by the invention is increased by more than 20%; and the ultra-high damping rubber composite material disclosed by the invention has the advantages of being strong in energy consumption property and ductility and obvious in damping and shock insulating effects, effectively controlling the earthquake response of shock insulating structures, and being environment-friendly and stable in property. The stretching strength is greater under the condition with the same hardness, so that a rubber bearing prepared by the ultra-high damping rubber composite material disclosed by the invention is greater in bearing force; the whole size of the bearing is smaller than the size of the traditional high-damping rubber bearing; and the rubber bearing has the advantages of saving the use space, being convenient to construct and more excellent in resistance to fatigue performance.

The invention relates to an arc-shaped steel spring plate vibration isolation support of a friction pendulum in the field of buildings, bridges and sluices engineering. The arc-shaped steel spring plate vibration isolation support comprises an upper support plate, a column upper sliding block, a column biconvex spherical lower sliding block and a lower support plate, wherein the lower part of the upper support plate is provided with a circular sealing plate, the outer wall of the lower part of the upper support plate is connected with the upper surface of the column upper sliding block, an arc-shaped steel spring plate elastic assembly connected with the column upper sliding block is arranged between the column upper sliding block on the outer wall of the lower part of the upper support plate and the circular sealing plate, a concave spherical surface of the column upper sliding block is connected with an upper convex spherical surface of the column biconvex spherical lower sliding block, and a lower convex spherical surface of the column biconvex spherical lower sliding block is positioned in a concave spherical surface of the lower support plate. The vibration isolation support has simple structure, large vertical loading capacity, good durability and remarkable vibration reduction and isolation effects, can freely rotate in various directions, and is suitable for buildings, bridges, sluices and other structures in a strong earthquake region.

The invention relates to a pulling-resistant friction isolation bearing for a bridge. The pulling-resistant friction isolation bearing comprises upper and lower bearing plates, upper and lower sliding bodies, a slider and a pulling-resistant housing, wherein the concave curved surface of the upper bearing plate is connected with the upper convex curved surface of the upper sliding body; a metal plate is arranged on the concave curved surface of the lower bearing plate; the concave curved surface of the lower bearing plate is connected with the lower convex curved surface of the lower sliding body; the upper sliding body is connected with the lower sliding body through the slider in the middle; the upper sliding body, the slider and the lower sliding body are arranged in the pulling-resistant housing; and the two side surfaces of the upper sliding body and the lower sliding body are connected with the inner wall of the pulling-resistant housing. The pulling-resistant friction isolation bearing adapts to deformation of the bridge under the action of a normal load, has the characteristics of rigidity and damping adaptivity, is strong in vertical pulling-resistant capability, meets the seismic performance requirements of the bridge under different fortification levels, is simpler in structure, high in vertical bearing capacity, large in horizontal displacement and good in durability and pulling resistance, and is suitable for the bridge with high seismic performance requirements.

The invention relates to a long-span bridge three-sphere frictional sliding shock isolation support in the aspect of bridge engineering field. The support consists of an upper support saddle plate, a movable slide block consisting of an upper segment and a lower segment, a middle sliding disk and a lower support saddle plate and is characterized in that the concave sphere of the upper support saddle plate is connected with the concave sphere of the middle sliding disk by the movable slide block consisting of the upper segment and the lower segment; the upper segment of the middle movable slide block is arranged in the recess of the lower segment; the upper segment and the lower segment are respectively provided with a convex sphere; and the convex sphere of the middle sliding disk is connected with the concave sphere of the lower support saddle plate. Within the range of calculable and controllable displacement range, the long-span bridge three-sphere frictional sliding shock isolation support changes the self rigidity and damping characteristics by the self-adaption behavior of the three spheres; for the multifunction objective or multilevel shock, the self adaptability is beneficial to respectively optimizing given shock isolation systems. The support saddle has simple structure, big vertical bearing capacity, big horizontal displacement, high durability and specific shock isolation mechanism, thereby being suitable for long-span bridges having high demand on shock resistant performance.

The invention provides friction pendulum supporting bases and a bridge damping and shock insulation system. Each friction pendulum supporting base comprises an upper base plate assembly, a lower baseplate assembly and a spherical crown lining plate. The spherical crown lining plate is slidingly arranged between the upper base plate assembly and the lower base plate assembly, the lower base plateassembly comprises a baseplate, a lower supporting base plate and a locking assembly, and the lower supporting base plate is slidingly arranged between the baseplate and the spherical crown lining plate; the locking assembly is arranged between the lower supporting base plate and the baseplate, and the locking assembly locks the sliding positions of the baseplate and the lower supporting base plate when the earthquake displacement is larger than the temperature displacement; the sliding friction coefficient of the baseplate and the lower supporting base plate is smaller than that of the spherical crown lining plate and the upper base plate assembly and smaller than that of the spherical crown lining plate and the lower base plate assembly. The bridge damping and shock insulation system comprises a fixed supporting base, a transverse supporting base and the two friction pendulum supporting bases, one friction pendulum supporting base is a vertical supporting base, and the other frictionpendulum supporting base is a multidirectional supporting base. The friction pendulum supporting bases and the bridge damping and shock insulation system have the advantages of being good in dampingand shock insulation effect, high in safe reliability, good in smoothness and the like.

The invention relates to a connection mode of a pier and a bearing platform through additional mild steel dampers, and belongs to the field of bridge engineering. According to the connection mode, mainly a reinforced concrete pier section, a concrete-filled steel tube pier section and additional mild steel dampers are arranged, wherein the section of a concrete-filled steel tube is a reduced scale section, and the vertical bearing capacity of the concrete-filled steel tube section with the reduced scale section is not lower than that of the reinforced concrete section; the additional mild steel dampers are arranged between the top of the bearing platform and the bottom of the reinforced concrete section. Under the effect of earthquakes, the plasticity deformation of the pier is focused on the concrete-filled steel tube section, so that a plastic hinge release pier bottom bending moment is formed; besides, the reinforced concrete section swings around a hinge to stimulate the mild steel dampers to resist earthquake force and dissipate earthquake energy. The energy consumption characteristics of the mild steel dampers can have protective effects on the concrete-filled steel tube section, through reasonable design, the concrete-filled steel tube section can be used only with slight repair and maintenance after the earthquakes, the damage of the main structure of a bridge is small, the normal service of the bridge is not influenced, and the damaged mild steel dampers are convenient to exchange.

The invention provides a double-column swinging bridge pier structure using a TMD seismic absorption measure and relates to the technical field of bridge construction seismic mitigation and absorption. A double-column swinging bridge pier construction method using the TMD seismic absorption measure comprises a bridge pier-bearing platform swinging structure, a bridge pier-upper structure swingingstructure and the TMD seismic absorption measure in an upper structure box room. No connection measure is available between an upper structure and bridge piers and between the bridge piers and bearingplatforms. Top segments and bottom segments of the bridge piers are expanded rectangular sections; and cuboid-shaped rubber blocks are arranged at the foot parts so as to prevent swinging interfacesfrom being damaged and destroyed due to local compression and collision. Anti-shear hollow steel pipes are arranged at the tops of the bridge pier and the bearing platform to limit the sliding of thebridge pier. The TMD seismic absorption measure consists of rolling shaft supports and counterweights to realize a function of absorbing seismic energy. According to the double-column swinging bridgepier structure using the TMD seismic absorption measure, the bridge pier swings to release bending moments at the top and bottom of a pier, and plastic deformation is concentrated on the rubber blockto absorb the seismic energy by using the TMD measure; and therefore, a bridge structure realizes good anti-seismic property and post-earthquake recovery capacity.

A high-energy-consumption double-curved-surface seismic mitigation and absorption support comprises an upper seatplate, a guide friction pair, a middle seatplate, a spherical friction pair, concentric-square-shaped steel dampers, a lower seatplate and a limiting device. The bottom surface of the upper seat plate is a concave spherical surface, the top surface of the lower seat plate is a concave spherical surface, the upper surface and the lower surface of the middle seat plate are convex spherical surfaces matched with the concave spherical surface, and the upper seat plate, the middle seat plate and the lower seat plate form a rotating mechanism of the support;limiting devices for limiting the upper seatplate are arranged on the four sides of the lower seatplate respectively. The singleside, the two sides or the periphery of the support are each provided with theconcentric-square-shaped steel damper, each concentric-square-shaped steel damper is in the concentric-squareshape; an opening is formed in one side of each concentric-square-shaped steel damper, a dislocation height difference exists at each opening, the lower free end of each opening is connected with the lower seatplate, and the higher free end of each opening is connected with the upper seatplate. The high-energy-consumption double-curved-surface seismic mitigation and absorption support has various advantages ofa double-curved-surface seismic mitigation and absorption support, has high energy dissipation capacity, can meet various seismic requirements during bridge construction, and is particularly suitablefor high-intensity and long-period seismic areas.

The invention discloses a shock absorption and isolation damper, a shock absorption and isolation device and a mounting method of the shock absorption and isolation device. The shock absorption and isolation damper comprises a spiral shock absorption and isolation main body rotating by a circle, the surface of the spiral shock absorption and isolation main body is a smooth cambered surface, when the shock absorption and isolation main body is stressed to deform, two thirds or more of the section is a deformation energy consumption section, and the shock absorption and isolation main body is provided with two end parts spaced up and down; the two end parts are each connected with a force transmission connecting part; the shock absorption and isolation device comprises a shock absorption and isolation support, the shock absorption and isolation support comprises an upper base plate and a lower base plate, at least one shock absorption and isolation damper is connected between the outer edge of the upper base plate and the outer edge of the lower base plate, and the two force transmission connecting parts of each shock absorption and isolation damper are connected with the upper base plate and the lower base plate through connecting pieces respectively. The shock absorption and isolation device is simple in structure and convenient to replace, is not limited by the height of the support, can achieve energy dissipation and shock absorption in any horizontal direction, can effectively prolong the structural period, provides a stable and higher damping ratio, and can achieve effective control over damping force, horizontal displacement, plastic deformation, the damping ratio and other parameters through computational analysis and tests.

The invention discloses a foundation pit prefabricated fender shock absorption pile. The foundation pit prefabricated fender shock absorption pile comprises a pile body, the upper end surface of the pile body is provided with a liquid storage pool, and the bottom of the liquid storage pool is provided with a round hole vertically penetrating through the lower end surface of the pile body. Slurry is poured into a water isolation space formed by a cover plate and the wall of the liquid storage pool, the slurry achieves the effect of filtering shock on the earth surface, and a round pipeline achieves the isolation effect on shock transmission. The invention further discloses a foundation pit retaining wall building method. The foundation pit retaining wall building method comprises the following steps that a trench is dug section by section in the position where a foundation pit support structure plans to be built; foundation pit prefabricated fender shock absorption piles are lifted to the preset position one by one, and slurry in a space between two shock absorption piles is pumped; and slurry in the liquid storage pools and round pipelines of all the foundation pit prefabricated fender shock absorption piles is pumped one by one, shock absorption slurry is poured into the water isolation spaces, and construction of the foundation pit support structure is completed. Foundation pit support is conducted through the foundation pit prefabricated fender shock absorption piles, the construction quality of the foundation pit support structure can be ensured, and an obvious shock absorption and isolation effect on the inner structure of a foundation pit is achieved.

The invention discloses a pier top embedded part, an eccentric force transmission part and a cantilever type anti-falling beam limiting device. The pier top embedded part comprises an embedded plate,a force transmission cylinder is arranged on the embedded plate, a first eccentric block is arranged in an inner cavity of the force transmission cylinder, a through hole is formed in the first eccentric block, and the axis of the through hole and the axis of the force transmission cylinder are eccentric; the eccentric force transmission part comprises a force transmission cup body and a loading ring, the bottom surface of the force transmission cup body is provided with a second eccentric block used for being inserted into the through hole in the first eccentric block, and the loading ring isinserted into an inner cavity of the force transmission cup body; the cantilever type anti-falling beam limiting device comprises a beam bottom embedded sleeve assembly, a pier top embedded part, aneccentric force transmission part connected to the pier top embedded part and a limiting tenon elastically installed between the beam bottom embedded sleeve assembly and a loading ring of the eccentric force transmission part, and the beam bottom embedded sleeve assembly is embedded in beam bottom plate concrete. The pier top embedded part is embedded in the surface of pier top concrete. The invention is simple in structural design, installation of the limiting tenon can be smoothly achieved, shock absorption, isolation and limiting effects on an earthquake can be achieved in the using process, and the beam falling prevention capacity can be improved.

The invention relates to the technical field of bridge supports, in particular to a multi-stage defense seismic mitigation and absorption support. The support comprises an upper connecting steel plate, an upper sliding cover plate, energy dissipation soft steel, shear keys and a lower connecting steel plate, the upper connecting steel plate is of a cylindrical structure and is fixed to the bottomof a bridge, a groove with a circular cross section is formed in the middle of the lower surface of the upper connecting steel plate, and the upper sliding cover plate is of a circular structure and is fixed to the top wall of the groove through the shear keys; the energy dissipation soft steel is of a strip-shaped structure, one end of the energy dissipation soft steel is fixed to the side wall of the groove, and a gap is formed between the other end of the energy dissipation soft steel and the upper sliding cover plate. The lower connecting steel plate is fixed to the top of a pier, and a lead core rubber vibration isolation support is arranged between the lower connecting steel plate and the upper sliding cover plate. The support has the advantages of being simple in structure, clear instress and the like, and multi-stage fortification and graded energy consumption under earthquakes of different intensities can be achieved.