The invention discloses a damage-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier and a manufacturing method thereof, and belongs to the field of bridge engineering. An exposed node connecting piece consists of a foot plate, anchor bolts, end connecting plates and buckling restraining sleeves. A connecting plate is mounted between prefabricated steel pipe concrete sections through high-strength bolts; the exposed node connecting piece is connected with each of a cover beam and a bearing platform by utilizing the anchor bolts, and is connected with a prefabricated steel pipe concrete section through the high-strength bolts relying on the end connecting plates. A pre-stressed tendon penetrates through a section prefabricated steel pipe concrete pier; the two ends of the pre-stressed tendon are respectively anchored to the interiors of the bearing platform and the cover beam by using anchorage devices. The energy consumption-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier disclosed by the invention has the characteristics of small post-seismic residual displacement, high energy consumption capacity, controllable energy consumption, high assembling degree, convenience and quickness in construction process, greenness, high efficiency, energy conservation, environment friendliness, easiness in factory production, convenience and quickness in construction, and the like; the construction period of the pier can be remarkably shortened.

Damage-controllable self-resetting section prefabricated assembled steel pipe concrete bridge pier and manufacturing method thereof

The invention discloses a bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier, and belongs to the field of bridge engineering. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier comprises precast rectangular concrete filled steel tube sections, pre-buried nodes, connecting plates, high-strength bolts and core penetration bolts; each precast concrete filled steel tube section consists of a steel tube section, concrete, reserved core penetration bolt hole channels, reserved bolt holes, precast screw caps, a sealing material and PVC (Polyvinyl Chloride) tubes; each pre-buried node consists of a precast rectangular concrete filled steel tube section, a foot plate, outside-stiffened ribs and anchor bolts; bolt holes and core penetration bolt holes are formed in each connecting plate according to bolt design positions; adjacent precast concrete filled steel tube sections are connected with each other by the connecting plates, the high-strength bolts and the core penetration bolts. The bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier has the characteristics of high anti-pressure and anti-shear bearing capacity, excellent anti-seismic property, easiness in factory production, convenience and rapidness in site operation, energy conservation, environmental friendliness and the like.

Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier

The invention relates to a hybrid control device for horizontal shock absorption and isolation of an aqueduct structure. The device mainly comprises a plurality of dampers (1), a plurality of springs (2), a grating (4) and a lead-zinc rubber support (6), wherein the plurality of dampers (1) and the plurality of springs (2) are arranged between the tops of aqueduct walls (3) at two sides of the aqueduct in longitudinal direction; the grating (4) is arranged in the aqueduct in the longitudinal direction; the lead-zinc rubber support (6) is arranged at the top of an aqueduct pier; and an aqueduct water body and an aqueduct body define a big rectangular TLD (tuned liquid damper) water tank. According to the invention, the TLD effect of a massive water body in the aqueduct body is taken into account, and seismic response is reduced by utilizing the shaking of the water body, thus changing the disadvantages of the water body to advantages, and breaking through a research method in that the traditional massive water body is disadvantaged to the aqueduct structure; more importantly, a hybrid shock absorption and isolation device consisting of the dampers, the springs, the grating and the lead-zinc rubber support can reduce the horizontal seismic response of the aqueduct to a greater degree, and is simple to install and is economical and practical.

Hybrid control device for horizontal shock absorption and isolation of aqueduct structure

The invention mainly discloses a pulling-resistant bidirectional sliding friction bearing applied to the field of bridge, flume and building engineering. The bearing comprises upper and lower bearing plates, upper and lower sliding blocks, a pulling-resistant system and a limiting pulling-resistant device, wherein the upper sliding block and the lower sliding block can horizontally slide on the upper bearing plate and the lower bearing plate respectively; and a pulling-resistant disc is embedded into a pulling-resistant spherical segment. In the state of a normal load and a small earthquake, the rotation between the pulling-resistant disc and the pulling-resistant spherical segment of the bearing adapts to that of an upper structure under the temperature and the normal load; in the state of a big earthquake, the vibration cycle of a structure system can be changed and the partial earthquake energy can be dissipated by the sliding movement of the sliding block so as to reduce the earthquake response of the upper structure; the pulling-resistant system can be used for preventing the upper structure from being overturned or collapsed due to a pulling force with the control effect caused by larger vertical ground motion component under the action of a near field and a near-fault earthquake; and the bearing is strong in pulling-resistant capability and good in durability, has a definite seismic mitigation and absorption mechanism, and is suitable for various structures such as bridges, flumes, buildings and the like with high seismic performance requirements.

Pulling-resistant bidirectional sliding friction bearing

The invention discloses a friction pendulum vibration isolation device. A stainless steel diaphragm is inlaid in one side, which faces a sliding surface of a bottom support, of a bottom hinging slider; an alloy resistor is arranged on the stainless steel diaphragm and is integrally connected with the stainless steel diaphragm through molecular bonds, so that an alloy film strain unit, which is used for inducing vertical pressure of the support, of a Wheatstone bridge is formed; an external load acts on a top supporting slide seat or a bottom supporting slide seat to cause deformation of the alloy film strain unit; the alloy film strain unit generates a voltage signal for monitoring the vertical pressure of the friction pendulum vibration isolation device; and the sliding surface of a bottom support plate is a curved surface. The invention also discloses a pressure monitoring structure for the friction pendulum vibration isolation device. By the friction pendulum vibration isolation device and the pressure monitoring structure thereof, the stress condition of the friction pendulum vibration isolation device can be monitored in real time, so that the health condition of the friction pendulum vibration isolation device can be judged; the friction pendulum vibration isolation device is high in fatigue resistance, high in stability and small in size; and influence on the mechanical property of the vibration isolation device is low.

Friction pendulum vibration isolation device and pressure monitoring structure thereof

The invention relates to a precast segment assembled concrete filled steel tube bridge pier based on bolted connection, and belongs to the field of bridge engineering. The precast segment assembled concrete filled steel tube bridge pier comprises joint embedded steel connecting parts, precast concrete filled steel tube segments, inter-segment connecting steel tubes and high-strength bolts, wherein each concrete filled steel tube segment comprises a concrete filled steel tube, inner stiffening ribs, reserved bolt holes and preset nuts; each joint embedded steel connecting part comprises an embedded steel tube, an end welding steel plate, inner stiffening ribs, outer stiffening ribs and reserved bolt holes; reserved bolt holes are formed in the two ends of each inter-segment connecting steel tube; the precast concrete filled steel tube segments are connected through the reserved bolt holes by depending on the inter-segment connecting steel tubes and adopting the high-strength bolts; and the precast concrete filled steel tube segments are connected with an upper bent cap and a lower bearing platform through the joint embedded steel connecting parts by adopting the high-strength bolts. The precast segment assembled concrete filled steel tube bridge pier has the characteristics of being high in compression resistance and shear bearing capacity, easy to industrially manufacture, convenient to construct, energy-saving and environment-friendly in use, and the like, can remarkably shorten the construction period of bridge piers, and provides a quick and effective solution for quick bridge construction in highly seismic regions.

Precast segment assembled concrete filled steel tube bridge pier based on bolted connection

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.

Arc-shaped steel spring plate vibration isolation support of friction pendulum

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.

Long-span bridge three-sphere frictional sliding shock isolation support saddle

The utility model relates to a shock isolating support for a self-adaptive bispherical steel spring plate in the field of engineering of buildings, bridges and flumes, which comprises an upper support plate, an upper cylinder sliding block, a lower biconvex-spherical surface cylinder sliding block, a sliding plate and a lower support plate, wherein the lower part of the upper support plate is provided with an annular sealed plate; the outer wall of the lower part of the upper support plate is connected with the upper surface of the upper cylinder sliding block; an elastic component for the bow steel spring plate which is connected with the upper cylinder sliding block is arranged between the upper cylinder sliding block on the outer wall of the lower part of the upper support plate and the annular sealed plate; the indent spherical surface of the upper cylinder sliding block is connected with the upper convex spherical surface of the lower biconvex-spherical surface cylinder sliding block; the lower convex spherical surface of the lower biconvex-spherical surface cylinder sliding block is positioned in the concave spherical surface of the sliding plate; and the convex spherical surface of the sliding plate is positioned in the concave spherical surface of the lower support plate The support has simple structure, high vertical bearing capacity, good durability and explicit mechanism of shock reduction and isolation, is applicable to buildings, bridges, flumes and other structures with higher requirement on anti-shock performance

Shock isolating support for self-adaptive bispherical steel spring plate

The utility model relates to a friction pendulum bow-shaped spring steel plate vibration isolation support in the field of buildings, bridges and aqueduct engineering. The support is formed by an upper support plate, a cylinder upper sliding block, a cylinder double-convex spherical surface lower sliding block and a lower support plate; an annular sealing plate is arranged on the lower portion of the upper support plate; the outer wall of the lower portion of the upper support plate is connected with the upper surface of the cylinder upper sliding block; a bow-shaped spring steel plate elastic component is arranged between the cylinder upper sliding block on the outer wall of the lower portion of the upper support plate and the annular sealing plate; the bow-shaped spring steel plate elastic component is connected with the cylinder upper sliding block; a concave spherical surface of the cylinder upper sliding block is connected with an upper convex spherical surface of the cylinder double-convex spherical surface lower sliding block; and a lower convex spherical surface of the cylinder double-convex spherical surface lower sliding block is positioned inside a concave spherical surface of the lower support plate. The vibration isolation support with simple structure is capable of freely rotating in all directions, has large vertical bearing force, fine durability and clear mechanism vibration isolation, and is adaptable to buildings, bridges, aqueducts and other buildings in a high seismic region.

Lukuan Qi

Papers

Precast segment assembled concrete filled steel tube bridge pier based on bolted connection

Arc-shaped steel spring plate vibration isolation support of friction pendulum

Long-span bridge three-sphere frictional sliding shock isolation support saddle

Shock isolating support for self-adaptive bispherical steel spring plate

Friction pendulum bow-shaped spring steel plate vibration isolation support