The invention discloses a reinforced concrete column reinforcing structure and method. A reinforcing groove is vertically formed in a to-be-reinforced reinforced concrete column, and the interior of the reinforcing groove is coated with a filling material; the clean reinforcing groove is half filled with the filling material, then a memory alloy bar is placed into the clean reinforcing groove, andthe reinforcing groove is pressed into the filling material; then the reinforcing groove is filled with a filling material and compacted and leveled, so that the reinforced concrete column and the memory alloy bar form a whole. A near-surface reinforcing method is adopted, so that the bonding area of a reinforcing rib and the concrete is increased, the possibility of bonding stripping damage is reduced, and the bonding performance of the reinforcing rib and the concrete is improved. The characteristics of the memory alloy bar are utilized so that the energy dissipation capability of the reinforcing column can be remarkably improved, the residual deformation generated after stress of the concrete column is reduced, the damage self-repairing capability of a component is improved, rapid recovery of structure functions after earthquakes is achieved, and semi-active control over the reinforced concrete column is achieved.

Reinforced concrete column reinforcing structure and method

The invention relates to a granular multi-stage-multi-directional energy consumption vibration reduction support seat, which comprises an energy consumption vibration reduction body, an upper part connection plate and a lower part connection plate, wherein the whole of the energy consumption vibration reduction body is a cube; the upper part connection plate and the lower part connection plate arerespectively and fixedly arranged at the upper and lower ends of the energy consumption vibration reduction body. The energy consumption vibration reduction body comprises a rubber protection layer,a vibration reduction granule fixing plate, a damping spring, memory alloy granules, high-damping rubber granules and a composite energy consumption body. The granular multi-stage-multi-directional energy consumption vibration reduction support seat aims at solving the problems of environment pollution, poor stability, nonuniform damping distribution, multi-stage-multi-directional energy consumption incapability and the like easily caused by the existing vibration reduction device. The invention provides the granular multi-stage-multi-directional energy consumption vibration reduction supportseat, which has the characteristics of environment-friendly effect, high stability, uniform damping distribution, multi-stage energy consumption capability, multi-directional energy consumption capability, high self restoration capability and the like.

Granular multi-stage-multi-directional energy consumption vibration reduction support seat

The invention discloses a variable-damping variable-rigidity viscoelasticity-friction composite damping device. The variable-damping variable-rigidity viscoelasticity-friction composite damping devicecomprises two symmetric cylinder type viscoelasticity damping device units and two cylinder type friction damping device units, the friction damping device units sleeve the outer sides of the cylinder type viscoelasticity damping device units, the cylinder type viscoelasticity damping device units sequentially comprise annular inner steel cylinders, annular viscoelasticity material layers and annular middle steel cylinders from inside to outside, elastic elements are sleeved with the middles of the annular inner steel cylinders, closed steel plates are mounted on two ends of the annular innersteel cylinders, cylinder viscoelasticity materials are mounted on inner sides of two ends of the annular middle steel cylinders, connecting anchorage steel plates are mounted on two ends of the annular middle steel cylinders, the friction damping device units sequentially comprise annular middle steel cylinders, annular friction pieces, annular friction plates and annular outer steel cylinders from inside to outside, the annular friction plates comprise first annular friction plates and second annular friction plates, and each annular outer steel cylinder is formed through connecting of an upper half annular outer steel cylinder and a lower half annular outer steel cylinder through bolt assembling.

Variable-damping variable-rigidity viscoelasticity-friction composite damping device

The invention discloses a bridge damping control system combing high-damping rubber with shape memory alloy, and belongs to the field of bridge structure damping control. Dampers are mounted on a bridge structure in pairs, and the compression performance of the high-damping rubber and the tensile performance of the shape memory alloy are fully played in the earthquake process; a bidirectional sliding spherical steel support is used for bearing vertical force, the planar size of the support is greatly reduced compared with that of a rubber support, and the durability is good; the axial rigidity of the dampers is adjusted by adjusting the length and diameter of high-damping rubber cylinders, the diameter, winding section number, winding section width and winding section interval of the shape memory alloy, and the diameter, number and pretension degree of shape memory alloy strands, and the axial rigidity demand of the dampers in different positions is met; and the energy consumption damping demands under the action of earthquake force with different strengths and in different directions are met by adjusting the pair number and positions of the dampers. The dampers are subjected to lightweight design, mounting and replacing are simple, and the bridge damping control system is used for damping reinforcement of newly built bridges and old bridges.

Bridge damping control system combing high-damping rubber with shape memory alloy

The invention provides a bridge floor reinforcing pavement layer by adoption of lightweight concrete and belongs to the technical field of bridge engineering. The pavement is capable of increasing transverse stiffness of an existing hollow hinged plate girder bridge. A lightweight concrete reinforcing layer of 15-20 centimeters is used to replace the original concrete bridge floor payment of the hollow hinged plate girder bridge. Constructional steel bars are configured inside the reinforcing layer and the constructional steel bars are arranged on an upper layer and a lower layer to form reinforcing meshes to increase rigidity of the reinforcing layer; wherein, reinforcing steel bars with diameters of phi16 are adopted in transverse direction of the bridge, distributing steel bars with diameters of phi10 are adopted in longitudinal direction of the bridge, and all the steel bars are arranged in full length and with a interval of 10-15 centimeters. On the premise that dead load action is not increased, the new paved lightweight concrete layer is relied on to effectively increase the transverse stiffness of the existing hollow hinged plate girder bridge and improve load-carrying performance and durability of the bridge.

Bridge floor reinforcing pavement layer by adoption of lightweight concrete

The invention discloses a reinforcing method for winding thermal excitation embedded shape memory alloy wires on a concrete column, and belongs to the field of concrete structure reinforcing. According to the force-bearing requirement of a reinforcing member, the to-be-reinforced zone is determined, and a protection layer of the to-be-reinforced zone is wholly or partially chipped away; according to the force-bearing requirement of the reinforcing member, the winding range, interval and diameter of the thermal excitation embedded shape memory alloy wires are further determined, the size and position of positioning screws are determined; the shape memory alloy wires are positioned through the positioning screws and fixed through anchorage device finally; the shape memory alloy wires are heated to the reverse change finish temperature or above of the shape memory alloy wires so that the shape memory alloy wires can generate restoring force; and heating is stopped, after the shape memory alloy wires are naturally cooled, the protection layer is repaired with epoxy-cement mortar, and the surface of the repaired concrete column is coated with fireproof paint. The reinforcing material is buried in the protection layer, so that the corrosion resistance is good, no anchorage device is exposed, the reinforced structure is good in durability, finished product protection is easy, the structure is consistent with an original structure after being reinforced, and the appearance is not influenced.

Reinforcing method for winding thermal excitation embedded shape memory alloy wires on concrete column

The invention relates to a high-damping rubber-friction composite damper. The high-damping rubber-friction composite damper comprises an upper cylinder, a lower cylinder, a front cover plate, a back cover plate, a piston, a front piston cover plate, a rear piston cover plate, a piston rod, two high-damping rubber blocks, a friction plate with low friction coefficient, a friction plate with high friction coefficient, a friction piece, a front connecting piece, a rear connecting piece and an end plate. A cavity is formed by the upper cylinder, the lower cylinder, the front piston cover plate anda rear piston cover plate through connection of high-strength bolts. The friction plates with different friction coefficients are arranged on the inner side of the cavity in an attached mode, so thatthe friction piece on the piston can produce relative sliding with the friction plates; and when the piston slides, high-damping rubber on both sides can be extruded by the piston cover plates, so that the high damping rubber is compressed and deformed. According to the high-damping rubber-friction composite damper, the energy is consumed through the friction force generated by the friction pieceand the friction plates and the deformation produced by the high-damping rubber blocks, the effect of consuming energy is high, and the high-damping rubber-friction composite damper has the characteristics of variable friction force, good self-resetting effect, low initial stiffness, convenient assembling, disassembling, and maintenance and the like.

High-damping rubber-friction composite damper

The utility model provides a bridge damping control system of high -damping rubber and shape memory alloy combination, belongs to the bridge structures shock damping control field. The attenuator is installed in pairs on bridge structures, in earthquake process full play high -damping rubber pressurized performance and shape memory alloy drawn the performance, adopting the spherical steel bearing of two -way sliding type to undertake vertical force, compare having reduced the plane size of support with rubber support by a wide margin, the durability is good, through length, the diameter of adjustment high -damping rubber cylinder, shape memory alloy wire 's diameter, winding hop count volume, winding section width and twine intersegmental distance, the axial stiffness of the diameter of shape memory alloy stranded conductor, quantity, pre -tension degree adjustment attenuator satisfies the axial stiffness demand of the attenuator of different positions, different intensity, the not equidirectional earthquake masterpiece energy dissipation demand under with is satisfied to the scalar sum position of organizing in pairs through adjusting the attenuator. Attenuator lightweight design, installation, change are simply for during newly -built bridge and old bridge antidetonation are consolidated.

Bridge damping control system of high -damping rubber and shape memory alloy combination

The utility model provides a reinforced bridge floor pavement layer made of lightweight concrete and belongs to the technical field of bridge engineering. By the reinforced bridge floor pavement layer made of the lightweight concrete, transverse stiffness of an existing hollow articulated slab girder bridge can be enhanced. A lightweight concrete reinforced layer 15-20cm in thickness substitutes for original concrete bridge floor pavement of the hollow articulated slab girder bridge. Constructional steel bars are configured in the reinforced layer in an upper layer and a lower layer to form a steel bar net, so that stiffness of the reinforced layer is enhanced. The steel bars phi16 in diameter are used for the transverse direction of the bridge, distributing steel bars phi10 in diameter are used for the axial direction of the bridge, the steel bars are in full-length arrangement, and the interval between each two adjacent steel bars ranges from 10cm to 15cm. The reinforced bridge floor pavement layer made of the lightweight concrete has the advantages that on the premise of not adding dead load, the transverse stiffness of the hollow articulated slab girder bridge is enhanced effectively by the newly-paved lightweight concrete layer, and stress performance and durability of the bridge are improved.

Reinforced bridge floor pavement layer made of lightweight concrete

The utility model provides a high -damping rubber cylinder sectional type twines attenuator of shape memory alloy silk outward, belongs to the engineering structure shock damping control field High -damping rubber is high elasticity, high damping material with the shape memory alloy silk, and the seismic power consumption demand of different intensity can be satisfied in both combinations The high elasticity of shape memory alloy silk can show the axial bearing capacity who improves the pure rubber body, and two kinds of highly elastic material combinations make the attenuator have better restoring force Shape memory alloy silk sectional type winding is on the high -damping rubber cylinder, and through the sectional area and the length of adjustment high -damping rubber cylinder, the diameter of shape memory alloy silk, winding hop count volume, winding section width and twine the axial stiffness that the attenuator was adjusted to intersegmental distance satisfy the axial stiffness demand of the attenuator of different positions The installation is simple, does not basically need other connecting pieces, can be used to the reinforcement engineering of newly -built structure and old structure, is applied to engineering structure's shock damping control field

Huang Cailiang

Papers

Reinforcing method for winding thermal excitation embedded shape memory alloy wires on concrete column

High-damping rubber-friction composite damper

Bridge damping control system of high -damping rubber and shape memory alloy combination

Reinforced bridge floor pavement layer made of lightweight concrete

High -damping rubber cylinder sectional type twines attenuator of shape memory alloy silk outward