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 marine wind turbine foundation structure, characterized by: including a plurality of steel -pipe piles and steel platform, the steel platform includes bottom end rail, upper and lower longeron and steel sheet, and the rigid coupling has a lower longeron on the bottom end rail, longeron upper portion rigid coupling has the entablature down, and entablature upper portion rigid coupling has last longeron, and it has the steel sheet to constitute whole steel platform to go up longeron upper portion rigid coupling, and bottom end rail and steel -pipe pile top rigid coupling, steel -pipe pile constitute steel platform basis. Beneficial effect: the utility model discloses can guarantee that crawler crane operation on the steel platform is not influenced by the stormy waves condition, reduce the construction of marine pile foundation, a tower section of thick bamboo and the fan construction and installation degree of difficulty, guarantee construction quality, improve the efficiency of construction, can show the reduction of erection time, save large -scale construction boats and ships ship machine expense, reduce project cost, but have the advantage that drops into the low reuse of reaching.

Marine wind turbine foundation structure

The utility model belongs to a technology for producing prestress high concrete (PHC) pipe piles, and relates to a production stream line for conveying PHC pipe piles. The production stream line is characterized by comprising a whole workshop which is formed by a left area, a middle area and a right area, from the front to the back of the workshop, the workshop in the left area sequentially provided with a blending building, an end plate processing area, a steel reinforcement cage and end plate assembly area and a steel reinforcement cage roll welding area; the workshop in the middle area is sequentially provided with a concrete spreading area, a caging area, an oil injection tank, a mold cleaning tank, a mold removing area and a steel bar fine cutting and heading area; and the workshop in the right area is sequentially provided with a stretching area, a centrifugal molding area, a steam curing area, a pipe pile stretching area, a product inspecting and sprayed code marking area, an area for storing semi-finished pipe piles to be steam-cured at high pressure and an inlet autoclave transition carriage pit. The production stream line has the beneficial effects that planar circulation arrangement is adopted, and the accident occurrence rate is reduced through an up and down inter-moving stereoscopic lifting technological mode; and an inclined platform and an inclined track are adopted to move the pipe piles, so that the moving distance of a travelling crane is greatly shortened, and the energy consumption is reduced.

Production stream line for conveying prestress high concrete (PHC) pipe piles

The utility model relates to a fan construction system of an offshore intertidal zone. The fan construction system is characterized in that a working platform which can be stationed in a floating-moving mode at sea and carry out construction by direct landing on a sea beach mud face and a crawling crane, the working platform comprises a truss structure which is welded horizontally and vertically, the area of the working platform is 2000 m -8000 m , the crawling crane moves on the working platform, a crawling crane fixing device is arranged in the middle of the working platform, the immersion depth of the full-loaded working platform in a floating state with the crawling crane is smaller than 1.5 m-1.6 m, the working platform is provided with a piling guiding frame which comprises a steel structure truss, and a jack is arranged at the top of the piling guiding frame. The fan construction system has the advantages of being suitable for fan construction working on the offshore intertidal zone. The 1000 t crawling crane carried on the working platform can carry out large-diameter steel pipe pile sinking work and fan split mounting work.

Fan construction system of offshore intertidal zone

The invention relates to a wall pile frame structure. The wall pile frame structure is characterized by comprising a frame and a wall pile. A plurality of wall pile holes are formed in a front end beam of the frame and a rear end beam of the frame; the wall pile penetrates through the wall pile hole; the frame is placed on the upper portion of the wall pile; backfill materials are arranged in the frame. The wall pile frame structure has the advantages that the wall pile frame structure is adopted by a hydraulic structure, has the advantages of a traditional pile-type structure which is strong in foundation adaptability, high in construction member prefabricating degree and easy and convenient to construct, and overcomes the defects that the pile-type structure is poor in durability and low in bearing capability. Compared with a gravity-type structure, the wall pile frame structure has the advantages of being strong in foundation adaptability. Compared with a slope-type structure, the wall pile frame structure in small in sand and gravel use amount, is particularly suitable for coastal sludge foundation costs in China such as Tianjin and Shanghai regions, and can serve as main structures of breakwater, cofferdam, dock and shore protection engineering.

Wall pile frame structure

The utility model relates to a bag bottom expansion rigid and flexible combined pile. A combined pile body is formed by connecting prefabricated tubular pipes of a TSC pile, a PRC pile and a PHC pile from top to bottom. The bottom end of the PHC pile is provided with a pile bottom expansion head with an external wrapping bag. Grouting hole channels are reserved in the walls of all the prefabricated tubular piles, tubular pile connectors with holes are arranged at the two ends of each pile section, and a grout outlet is formed in the side wall of the bottom pile section. The outer side of the combined pile is wrapped by pile peripheral cement soil. According to the bag bottom expansion rigid and flexible combined pile, according to the rules of the pile body bearing horizontal loads in the soil body, the combined and connected prefabricated tubular piles with the bending resistance performance and the shear resistance performance increased gradually are sequentially implanted in the cement soil, the bag post grounding expansion head stable in character is arranged to increase the vertical bearing force of the pile body, and the bag bottom expansion rigid and flexible combined pile has high technical economic benefits.

Chen Qiang

Papers

Marine wind turbine foundation structure

Production stream line for conveying prestress high concrete (PHC) pipe piles

Fan construction system of offshore intertidal zone

Wall pile frame structure

Bag bottom expansion rigid and flexible combined pile