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 relates to a pile column type concrete hollow pile pier structure. The pile column type concrete hollow pile pier structure is characterized by comprising a concrete hollow pile pier, a bridge support, a pier cover beam and a base bearing platform, a flange disc is arranged at the lower end of the concrete hollow pile pier, a reserved bolt hole is formed in the flange disc, the flange disc is connected with the base bearing platform, the flange disc and the base bearing platform are arranged in cast-in-place concrete, an upper bridge support steel plate is arranged at the upper surface of the bridge support while a lower bridge support steel plate is arranged at the lower surface of the bridge support, a flange disc is arranged at the upper end of the concrete hollow pile pier and connected with the lower bridge support steel plate, and the upper bridge support steel plate is connected with the pier cover beam. The pile column type concrete hollow pile pier structure has beneficial effects that the concrete hollow pile pier can be prefabricated in a factory, the pier length can be controlled precisely, the bearing ability of the pier is improved, the concrete hollow pile pier is connected with the base bearing platform through using the flange discs and an insert core reinforcing cage and casting concrete in place, the connecting intensity of the pier can be guaranteed, and the stability thereof is improved.

Pile column type concrete hollow pile pier structure

The invention relates to a bag bottom expanding rigid-flexible combined pile. The bag bottom expanding rigid-flexible combined pile is formed by connecting the following prefabricated pipe piles including a TSC (prestress concrete thin wall concrete) pile, a PRC (prestress reinforcement concrete) pile and a PHC (prestress high-strength concrete) pile from top to bottom. The bottom end of the PHC pile is provided with a pile bottom expander packed by a bag; the inside of the prefabricated pipe piles is provided with a grouting duct; both ends of every pile is provided with perforated pipe pile joints, and the side wall of the pile at the bottom is provided with a grout outlet; the outside of the combined pile is packed by surrounding cemented soil. According to the bag bottom expanding rigid-flexible combined pile, based on the law of horizontal load bearing of the pile bodies inside soil, the prefabricated pipe piles with the anti-bending and anti-shearing performance gradually improved, which are connected in a combined mode, are sequentially planted inside the cemented soil, and the expanded is grouted after the bag with stable characteristics is set to improve the vertical bearing capacity of the piles, so that relatively higher technical and economical benefits can be obtained. The invention also discloses a construction method of the bag bottom expanding rigid-flexible combined pile.

Bag bottom expanding rigid-flexible combined pile and construction 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 discloses a concrete pipe pile automatic production line. The concrete pipe pile automatic production line is characterized by comprising a feeding region, wherein a concrete agitator and a distribution car are arranged in the feeding region; a mould combination region is arranged behind the feeding region; a crane which can move pipe moulds to the mould combination region is arranged between the feeding region and the mould combination region; a tensioning region is arranged behind the mould combination region; a tensioning machine is arranged in the tensioning region; a centrifugal region is arranged behind the tensioning region; a centrifugal machine is arranged in the centrifugal region; a normal temperature steaming and maintaining region is arranged behind the centrifugal region; a steaming and maintaining pond is arranged in the normal temperature steaming and maintaining region; a mould demounting region is arranged behind the normal temperature steaming and maintaining region; a releasing machine for demounting upper nuts of the pipe moulds is arranged in the mould demounting region; a woven cage region is arranged behind the mould demounting region; upper mould conveying chains and lower mould conveying chains for conveying the pipe moulds are respectively arranged on one sides or centers of the mould demounting region, the normal temperature steaming and maintaining region, a centrifugal region and a mould combination region, the crane is arranged between the woven cage region and the mould demounting region, and a high pressure steaming and maintaining region is arranged behind the woven cage region.

Concrete pipe pile automatic production line

The utility model relates to a concrete tubular pile which is characterized by comprising a concrete tubular pile body, a steel reinforcement cage and end plates which are fixed at the two ends of the steel reinforcement cage. The steel reinforcement cage is composed of spiral reinforcing bars and main reinforcing bars. The main reinforcing bars are fixedly connected with the spiral reinforcing bars through nonprestressed reinforcement. The concrete tubular pile has the beneficial effects that stressed method is reasonable. All the main reinforcing bars of the steel reinforcement cage accept HRB 400 reinforcing bars. When the HRB 400 reinforcing bars are cold drawn to improve flexural capacity of the tubular pile, the reinforcing bars can be obtained conveniently, wherein the reinforcing bars are basically with the same stress, and therefore the stress of the tubular pile is even. Horizontal bearing capacity of the tubular pile can be improved greatly by the HRB 400 reinforcing bars. A technological process is convenient and fast. The HRB 400 reinforcing bars are adopted by the main reinforcing bars of the steel reinforcement cage, the spiral reinforcing bars are arranged outside the main reinforcing bars, and therefore connection can be finished through a roll welding method, and manufacturing efficiency of the steel reinforcement cage of the tubular pile is improved. The horizontal bearing capacity of the tubular pile is improved effectively, and usages of the tubular pile are increased, wherein the tubular pile can be used in projects such as a foundation pit, a side slope and an embankment and buildings with an anti-earthquake degree of more than seven.

Concrete tubular pile

The invention discloses a fabricated pile which comprises a lower pipe pile. A lower pipe pile reinforcing cage is arranged in the lower pipe pile, and an upper end plate is arranged at the upper end of the lower pipe pile. A top pipe pile is arranged at the upper end of the lower pipe pile, a lower end plate which is pressed on the upper end plate is arranged at the lower end of the top pipe pile, and the lower end plate and the upper end plate are connected. A top pipe pile reinforcing cage is arranged in the top pipe pile, composite stirrups shaped like a Chinese character 'jing' are arranged on the top pipe pile reinforcing cage every other 200-400 mm, and a post-poured concrete grouting core is arranged in the top pipe pile. The invention further discloses a construction method of the fabricated pile. According to the fabricated pile and the construction method of the fabricated pile, the upper fabricated pipe pile and the lower fabricated pipe pile are assembled together, and the advantages of the pipe piles and the advantages of cast-in-situ bored piles are fused together in the mode that the post-poured concrete grouting core is poured in the top pipe pile. The fabricated pile has the advantages that pile connection is simple, convenient and fast, the construction cost is low, construction is quick, the quality can be guaranteed easily, and the bearing capacity is high.

Fabricated pile and construction method thereof

The invention relates to a construction method of a breakwater in a pile-supported cylindrical caisson structure. Connection of a multi-segment pile and sinking of thereof are finished by sinking a lower cylindrical caisson under negative pressure. The pile-supported cylindrical caisson structure comprises an upper cylinder with reserved pile holes, a lower cylinder with compartments and foundation piles; the foundation piles penetrate the reserved pile holes of the upper cylinder and are connected with the upper cylinder through concreting to form an integrated structure; a bottom plate of the upper cylinder is a cover plate of the lower cylinder; the cover plate is provided with reserved ducts for valve control. The construction method has the advantages that the advantages of the cylindrical caisson structure, the caisson structure and the foundation pile structure are given to full play; after the lower cylinder is sunk into the earth, horizontal bearing capacity of the foundation structure can be improved; the foundation pile structure allows higher vertical bearing capacity for a foundation; after the upper cylinder is filled with backfill, structural stability can be improved and wave impact resistance can be improved.

Construction method of breakwater in pile-supported cylindrical caisson structure

The utility model relates to a pile-supporting caisson cylinder bulwark structure. The bulwark structure is characterized by comprising an upper cylinder, a lower cylinder and foundation piles, wherein the upper cylinder is provided with reserved pile holes and compartments, and the lower cylinder is provided with compartments. The upper cylinder and the lower cylinder are in poured connection to form a pile-supporting structure. The foundation piles penetrate through reserved pile holes of the upper cylinder and are connected with the pile-supporting structure through poured concrete to form an integrated pile-supporting caisson cylinder structure. The compartments are formed in the upper cylinder and the lower cylinder through concrete partition plates or steel partition plates. A bottom plate of the upper cylinder is a cover plate of the lower cylinder, and the cover plate is provided with reserved hole passages controlled by valves. The bulwark structure has the advantages that the advantages of the caisson cylinder structure, a caisson structure and a foundation pile structure are fully utilized; after sinking into a mud surface, the lower cylinder can improve the horizontal supporting force of a foundation structure; the foundation pile structure can improve the vertical supporting force of foundations; after the upper cylinder structure is filled with backfills, structural stability and the ability to resist wave impact can be improved.

Pile-supporting caisson cylinder bulwark structure

The utility model relates to a multi -functional marine construction is from peaceful platform, including hull, spud leg, hoist, armful stake ware and main generator, characterized by: the spud leg is equipped with four, and is located hull side string department respectively and is symmetrical arrangement, the spud leg includes upper portion spud leg and lower part spud leg, the upper portion spud leg comprises a plurality of spud legs segmentations, and each segmentation spud leg is pegged graft the back each other and is constituted wholly, and the lower part spud leg is whole spud leg, a plurality of pinholes of equipartition are gone up along its longitudinal center line to the spud leg, the spud leg is the corresponding lifting device that is provided with respectively, the lifting device is and is located the spud leg periphery around the type, the hoist is located skew hull longitudinal axis one side at the hull, embrace the stake ware and arrange ship stern or shipboard in, main generator is located the crane base below. Beneficial effect: collect jack -up, pile, hoist and mount, transportation A number of functions, possess the intertidal zone and sit beach, coastal waters jacking state operation and floading condition operation function, can realize that a ship is multi -purpose, reduce ship machine expense.

Chen Qiang

Papers

Concrete tubular pile

Fabricated pile and construction method thereof

Construction method of breakwater in pile-supported cylindrical caisson structure

Pile-supporting caisson cylinder bulwark structure

Multi -functional marine construction is from peaceful platform