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 special ship for transporting large-diameter steel pipe piles and assisting in pile hoisting construction, which is characterized by comprising a barge, a stem winch, a stern winch, fixing support, a sliding trolley and two steel rails The stem winch and the stern winch are longitudinally fixed onto a deck at positions of a stem and a stern of the barge respectively, the two steel rails are fixed onto the barge deck between the stem winch and the stern winch, the fixing support is fixed to one end of each steel rail, the sliding trolley is arranged at the other end of each steel rail corresponding to the fixing support, and two ends of the sliding trolley are connected with a traction steel rope of the stem winch and a traction steel rope of a stern winch respectively The special ship has the advantages that the special ship is simple in structure, low in cost, high in operating efficiency and safe and reliable in construction, the maximum hoisting weight of a hoist can be reduced by 50% in hoisting of steel pipe piles with same weights, and labor intensity can be greatly relieved for workers

Special ship for transporting large-diameter steel pipe piles and assisting in pile hoisting construction

The invention relates to a cylindrical foundation water gate structure and a construction method for a closure of a cofferdam. The cylindrical foundation water gate structure comprises a cylindrical foundation, and is characterized in that an upper water gate structure is arranged on the upper portion of the cylindrical foundation and comprises an upper toe wall, a lower toe wall at the upper end of a cover plate, gate grooves, longitudinal walls, gates and panels; the cover plate of the cylindrical foundation is fixedly connected with the lower toe wall at the upper end of the cover plate; the lower toe wall at the upper end of the cover plate is fixedly connected with the gate grooves; the gate grooves are fixedly connected with the upper toe wall; the upper toe wall is provided with a through groove; the gates penetrate in the through groove and are inserted in the gate grooves; the adjacent gate grooves are connected to one another through the longitudinal walls along the longitudinal axis direction; and the panels are arranged at the upper end of the upper toe wall and the upper ends of the longitudinal walls. The cylindrical foundation water gate structure has the advantages that the cylindrical foundation is used, so that pouring or installation of the water gate structure is performed above water; construction of a cofferdam project is then performed step by step; and the troublesome process of underwater pouring is avoided.

Cylindrical foundation water gate structure and construction method for closure of cofferdam

The invention relates to a method for construction of intertidal zone offshore wind power multi-pile conduit frame foundation pile sinking The method is characterized in that pile sinking positioning and perpendicularity control are performed on steel pipe piles through a piling limiting frame, and a floating crane hydraulic impact hammer setting on a beach is utilized to perform hanging up and beating for pile sinking The method comprises the steps of performing steel pipe pile processing and marine transportation, performing ship positioning, leveling the beach face of a pile sinking area, placing the piling limiting frame, injecting water to a water containing cavity in the piling limiting frame, adjusting the levelness of the piling limiting frame, vertically lifting the steel pipe piles, inserting the steel pipe piles in a pile holding device of the piling limiting frame, utilizing a piling hammer for pile pressing and utilizing the piling hammer for pile sinking The method has the advantages that the steel pipe piles are guided and limited through the piling limiting frame, pile sinking perpendicularity is guaranteed, accuracy of relative positions of the steel pipe piles of every foundation is guaranteed, construction of a whole fan foundation can be finished by one-time ship parking, a construction process is simplified, and construction efficiency is greatly improved

Piling limiting frame for intertidal zone offshore wind power foundation pile sinking and construction method thereof

The utility model relates to a novel high-pile wharf. The novel high-pile wharf comprises a high-pile platform, a pile foundation and a shore connecting structure connected with a storage yard at the back of the wharf, and is characterized in that the shore connecting structure comprises a concrete frame and multiple wall piles, the wall piles are fixedly connected with the concrete frame, concrete cap beams and a breast wall are cast on the top of the concrete frame on site, the wall piles and the concrete frame form an integrated wall pipe frame shore connecting structure accordingly, and the wall pipe frame shore connecting structure is connected with the high-pile platform. The novel high-pile wharf has the advantages that the wall pipe frame shore connecting structure is adopted, and foundation treatment is not needed; the wall pipe frame shore connecting structure is high in rigidity and stability, can bear large horizontal loads, and eliminates the influences, caused by a high rear loading speed and other factors, of backfill lateral displacement on the structure of a traditional high-pile wharf; influences of differential settlement of soft soil foundations, backfill lateral deformation, bank slope sliding, seismic dynamic loads and the like on the structure of the high-pile platform of the wharf are reduced.

Novel high-pile wharf

The invention relates to an installation system and construction method of a wind turbine assembly in a sea intertidal zone. The installation system comprises an operation platform and a crawling crane, wherein the operation platform can float, move and be docked on the sea and can also be set on a muddy surface of a beach to carry out construction operation. The construction method includes the steps that when a tide rises, the operation platform is moved and docked through a tug, and a pile transporting boat is docked; when the tide falls, the operation platform is set on the beach, and steel pipe piles are craned by the crawling crane to sink; when the tide rises, the operation platform is moved and docked, and the pile transporting boat carries wind turbine equipment and then is berthed; when the tide falls, the operation platform is set on the beach, and the whole wind turbine assembly is craned by the crawling crane to be installed. The installation system and construction method of the wind turbine assembly in the sea intertidal zone have the advantages that the operation platform does not need to be leveled by adding ballast water when in a floating state, and the depth of immersion is smaller than 1.6m; the operation platform can be set on the muddy surface of the beach to carry out construction, and the 1000t crawling crane is carried by the operation platform and can move on the operation platform and be used for large-diameter steel pipe pile sinking operation and wind turbine separate installation; the problem that large ships can not run into a shallow intertidal zone to carry out construction is solved.

Chen Qiang

Papers

Special ship for transporting large-diameter steel pipe piles and assisting in pile hoisting construction

Cylindrical foundation water gate structure and construction method for closure of cofferdam

Piling limiting frame for intertidal zone offshore wind power foundation pile sinking and construction method thereof

Novel high-pile wharf

Installation system and construction method of wind turbine assembly in sea intertidal zone