Yang Qingming

Bio: Yang Qingming is an academic researcher. The author has contributed to research in topics: Pile & Turbine. The author has an hindex of 4, co-authored 11 publications receiving 45 citations.

Piling process for building sheet pile type wharf in shallow coastal water

Abstract: The invention relates to a piling process for building a sheet pile type wharf in shallow coastal water. The process comprises the following steps: 1) a propelled flat barge, a self-propelled flat barge and a pile-transporting barge anchor in a construction area where sheet piles are to piled, the barges are positioned; 2) two theodolites are used to position and measure a guide pile in a right angle intersection manner, a land crawler crane on each flat barge is used to pile three guide piles in turn; 3) each crawler crane is used to arranged a moving back plate to clamp the moving back plate with a guide beam; 4) a scow crane is used to to lift a sheet pile from the pile-transporting barge in a three-point manner and place the sheet pile near the side of a pile driver; and 5) the sheet pile is sleeved in a follower, the self-sinking of the sheet pile is performed, when the sheet pile is stable, the sheet pile is hammered to sink, the above steps are repeated until all the sheet piles are piled, and the construction is completed. By adopting the process, the construction difficulty of piling the sheet pile in shallow water can be solved better; and the workload for piling the auxiliary guide pile is reduced and the construction cost of the sheet pile is reduced, thus the piling process has great practical application value and promotion value.

Precast concrete jacket type offshore wind turbine foundation

Abstract: The invention relates to a precast concrete jacket type offshore wind turbine foundation. The offshore wind turbine foundation is characterized by comprising an reinforced concrete frame precast ashore, foundation piles and a cap beam, wherein the reinforced concrete frame precast ashore comprises upper and lower guide beams, a connecting beam, stand columns and a core tube; reserved pile holes are evenly distributed in the upper and lower guide beams; the foundation piles penetrate through the reserved pile holes; a plurality of stand columns are evenly distributed between the upper and lower guide beams; a cylindrical core tube is arranged in the center of the upper and lower guide beams; the core tube is connected with the upper and lower guide beams through the radial connecting beam to form an integral structure; the cap beam is arranged on the surface of the upper guide beam; and the cap beam, the reinforced concrete frame and the foundation piles form an integral precast concrete foundation structure. The precast concrete jacket type offshore wind turbine foundation has the benefits as follows: a traditional practice that offshore gravity type foundations adopt conventional cast-in-place concrete foundations is changed, the lighter reinforced concrete structure frame is precast ashore firstly and then placed at the seabed of a coastline, and precast foundation piles are inserted into and fixedly connected with the frame to form the integral foundation, and the integral wind turbine foundation which is firm and resistant to wind waves can be built.

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

Abstract: 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

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

Abstract: 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.

Vibrating pile-sinking pile driving barge used for global position system (GPS) overwater pile-sinking control

Abstract: The invention discloses a vibrating pile-sinking pile driving barge used for global position system (GPS) overwater pile-sinking control. The vibrating pile-sinking pile driving barge comprises a mother ship and a lifting device arranged on the mother ship. The mother ship is a deck barge. The lifting device is a crawler crane and is assembled on the deck barge. A guide frame and pile grippers are arranged at the ship bow of the deck barge. By means of the vibrating pile-sinking pile driving barge, the overwater pile-sinking can be implemented smoothly by the adoption of a remote GPS positioning process, and the pile-sinking positioning accuracy is guaranteed.

Offshore wind power installation platform

Abstract: The invention discloses an offshore wind power installation platform. The offshore wind power installation platform comprises a main hull, lifting devices, four spud legs, a spud-around type crane, aliving building and a driving control room. The four spud legs are arranged on the main hull, and each spud leg is connected with the main hull through the lifting devices. The offshore wind power installation platform is characterized in that the main hull is of an axisymmetric structure and the central axis of the main hull is arranged in the ship length direction; the four spud legs comprise the first spud leg located at the stern of the main hull, the second spud leg located at the bow of the main hull, the third spud leg and the fourth spud leg, wherein the third spud leg and the fourth spud leg are located on the two sides of the main hull, the first spud leg and the second spud leg are both located on the central axis, the first spud leg and the second spud leg are located on the midperpendicular of the connected line of the third spud leg and the fourth spud leg, and the first spud leg and the second spud leg are located on the two sides of the connected line of the third spudleg and the fourth spud leg correspondingly; and the spud-around type crane is arranged on the position of the first spud leg, and the living building and the driving control room are located at the bow of the main hull. According to the offshore wind power installation platform, through arrangement of the four spud legs, the spud-around type crane, the living building and the driving control room, the deck use ratio of the wind power installation platform is increased, and meanwhile balancing of hull loads is facilitated.

Assembled multi-pile foundation structure and construction method thereof

Abstract: The invention provides an assembled multi-pile foundation structure and a construction method thereof. The assembled multi-pile foundation structure comprises a concrete body, wherein a preserved foundation ring hole is formed in the center of the top surface of the concrete body, and a plurality of preserved pile holes are annularly and uniformly formed in the bottom surface of the concrete body corresponding to pipe piles. A land prefabricated concrete bearing platform (concrete bearing platform pouring jacket) is adopted, the conventional steel pouring jacket is replaced by the concrete bearing platform, and the prefabricated concrete bearing platform pouring jacket is taken as a concrete template as well as an important bearing structure. Compared with the conventional multi-pile foundation construction scheme adopted in offshore wind turbine generators, the assembled multi-pile foundation mounting method has the advantages that offshore form erecting and form stripping procedures are eliminated. Meanwhile, a large amount of offshore field binding of steel bars can be finished in a land prefabrication plant, the construction efficiency is increased greatly, the offshore bearing platform construction time is saved, and the construction cost is reduced.

Prefabricated concrete cushion cap preserved with foundation ring hole and pile recess ring hole and mounting method of assembly type multi-pile foundation based on cushion cap

Abstract: The invention provides a prefabricated concrete cushion cap preserved with a foundation ring hole and a pile recess ring hole and a mounting method of an assembly type multi-pile foundation based on the cushion cap. A preserved foundation ring hole which is coaxial with a concrete body of the prefabricated concrete cushion cap is arranged in the center of the top surface of concrete body; a preserved pile recess ring hole passing through the top surface and the bottom surface of the concrete body is formed in the edge of the concrete body; a plurality of circumferentially-arranged connecting steel beams are arranged between the inner and outer ring surfaces of the preserved pile recess ring hole; portions of the preserved pile recess ring hole between adjacent connecting steel beams form a preserved pile recess hole. Compared w prefabricated concrete cushion cap has the advantages that offshore form erecting and form stripping procedures are eliminated. Meanwhile, a large amount of offshore field steel bar binding can be completed in a land prefabrication plant, thereby greatly increasing the construction efficiency, saving the offshore bearing cap construction time, and meanwhile reducing the construction cost.

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

Abstract: 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.