Zhang Haisheng

Bio: Zhang Haisheng is an academic researcher. The author has contributed to research in topics: Pile & Foundation (engineering). The author has an hindex of 5, co-authored 20 publications receiving 78 citations.

Construction process for single-pile wind turbine foundation in intertidal zone

Abstract: The invention discloses a construction process for a single-pile wind turbine foundation in an intertidal zone, which comprises the following steps of: hauling a locating ship, a transporting ship and a craning ship to an appointed place during high tide; anchoring and locating the craning ship; horizontally hoisting a foundation pile; staking the foundation pile; loading the foundation pile into a pile clamping device; adjusting the verticality of the foundation pile; naturally sinking the foundation pile; examining the verticality, wherein if the verticality does not meet the requirements, the natural sinking of the foundation pile is carried out again; releasing a hoisting point; hoisting a pile hammer and a pressure hammer; starting a hydraulic impact hammer power system; hammering with an impact hammer; examining the verticality, wherein if the verticality does not meet the requirements, the hammering of the impact hammer is adjusted; sinking the pile by impact; measuring an elevation and a penetration degree, wherein if the elevation and the penetration degree do not meet the requirements, the step of sinking the pile by impact is adjusted; stopping the hammer; and demounting the craning ship. The invention has the following advantages of solving the problems of short effective operation time and low construction work efficiency for the wind turbine foundation construction in the intertidal zone, and greatly reducing construction cost.

Transition-section-free single-pile foundation construction and fan equipment installation process for shallow sea area wind farm

Abstract: The invention discloses a transition-section-free single-pile foundation construction and fan equipment installation process for a shallow sea area wind farm. The process comprises a transportation method. The transportation method comprises the following steps of: arranging single pipe piles on a transportation ship, arranging tracks and pulley devices below the single pipe piles, hanging a rigging after arriving at a construction sea area, and directly erecting piles; dividing a tower into two or three sections, placing each section of tower onto a tower bracket for transporting vertically, erecting, and arranging all small parts including electrical appliance cabinets and the like in the tower to lower field workload; constructing rabbit assemblies by using a cabin, hubs and two blades for transportation to lower field workload and lower the influence of wind speed; and designing a special tool for remaining blades, wherein overlaid transportation can be performed to fully utilize the space of the transportation ship. The transition-section-free single-pile foundation construction and fan equipment installation process for the shallow sea area wind farm disclosed by the invention has the advantages of mature technology, low tool cost, easiness in operating, vertical degree adjusting function, reduction in hoisting times, great increase in the construction efficiency, great saving of ship renting and amortizing cost, and reduction in the construction cost.

Construction method of large single-pipe pile foundation of shallow-sea wind power plant

Abstract: The invention discloses a construction method of a large single-pipe pile foundation of a shallow-sea wind power plant. The construction method includes the following steps that a, buoyancy tanks are positioned and fixed; b, single-pipe piles are hammered to sink; c, the buoyancy tanks are withdrawn; d, accessories are installed. The construction method has the advantages that the manufacturing cost of the buoyancy tanks is low, and the total manufacturing cost is about 10 million and is much lower than that of a self-elevating platform; compared with the self-elevating platform, operation is easy, complex elevation is not needed, and construction risks are low; the tide rising and tide falling characteristic of sea water is utilized, the buoyancy tanks leave the water surface when the tide falls to be low, the function the same as that of the self-elevating platform is achieved, and the piling process is not influenced by stormy waves.

Shallow sea wind power plant rock-socketed monopile foundation construction method

Abstract: The invention discloses a shallow sea wind power plant rock-socketed monopile foundation construction method. The method includes the following steps of positioning of a self-elevating lifting platform and a transport ship, monopile hammering pile sinking, drilling, continual hammering pile sinking and installation of accessories. The shallow sea wind power plant has the advantages that on the premise of reference of a soft foundation shallow sea wind power plant rock-socketed monopile foundation construction method, a drilling machine 5000 special for bedrocks is used for drilling holes in the bedrocks, and the problem about how to apply a monopile foundation to the rock foundation environment is solved; grouting treatment is not needed in foundation construction, multiple complex process programs are reduced, a large amount of manpower, material and construction cost is reduced, construction cost is about 700 million yuan per fan foundation, construction efficiency is improved and one foundation can be constructed in 5 days; the progress of shallow sea area wind power plant monopile foundation large-scale construction in the rock foundation environment is boosted, and construction cost of an offshore wind power plant is greatly reduced.

Transportation method for pre-assembled main cellular sheet pile 1/4 cylinders of cellular steel sheet piles

Abstract: The invention discloses a transportation method for pre-assembled main cellular sheet pile 1/4 cylinders of cellular steel sheet piles. The method comprises the steps of (1) arranging transport supports on transport ships, wherein the supports are fixed on decks of the transport ships and loaded in a two-side longitudinal symmetrical mode; (2) assembling main cellular sheet pile 1/4 cylinders on the transport supports by using steel sheet piles to obtain corresponding 1/4 circular steel sheet pile assembly sheets; and (3) hauling the transport ships with the 1/4 circular steel sheet pile assembly sheets arranged through towage ships to construction sites. According to the transportation method, problems in the prior art can be solved effectively, and the shipping stability and safety of the ships are guaranteed.

Wind generation set impeller assembling device and impeller assembling method

Abstract: The invention discloses a wind generation set impeller assembling device which is characterized by comprising an installation seat (1) used for positioning and supporting a hub (5), and multiple impeller installing devices used for installing an impeller (6) and the hub (5) in an aligned mode. The impeller installing devices are respectively connected with the installation seat (1) so as to form an impeller assembling platform. The installation seat (1) is provided with a plurality of connection portions (10) which are connected with the impeller installing devices respectively. When the impeller is assembled, the hub (5) is arranged on the installation seat (1), each variable pitch bearing of the hub (5) corresponds to one impeller installing device, the impeller (6) is placed on one corresponding impeller installing device and moved to one corresponding variable pitch bearing of the hub (5), so that the impeller and the hub are connected. According to the wind generation set impeller assembling device, the impeller and the hub can be fast aligned and positioned, installing the impeller is fast, the structural design is simple, and the wind generation set impeller assembling device is convenient to use and applicable.

Construction method of large single-pipe pile foundation of shallow-sea wind power plant

Abstract: The invention discloses a construction method of a large single-pipe pile foundation of a shallow-sea wind power plant. The construction method includes the following steps that a, buoyancy tanks are positioned and fixed; b, single-pipe piles are hammered to sink; c, the buoyancy tanks are withdrawn; d, accessories are installed. The construction method has the advantages that the manufacturing cost of the buoyancy tanks is low, and the total manufacturing cost is about 10 million and is much lower than that of a self-elevating platform; compared with the self-elevating platform, operation is easy, complex elevation is not needed, and construction risks are low; the tide rising and tide falling characteristic of sea water is utilized, the buoyancy tanks leave the water surface when the tide falls to be low, the function the same as that of the self-elevating platform is achieved, and the piling process is not influenced by stormy waves.

Ocean wind power mounting platform

Abstract: The invention relates to a multifunctional ocean wind power mounting platform which comprises a ship body, a plurality of pole legs, a crane, a main power generator, a piling hammer and a pole embracing device. The pole legs extend downward from the bottom surface of the ship body. The crane is arranged at the deck of the ship body. The main power generator is used for supplying power to the crane. The piling hammer is arranged within the operating range of the crane. The pole embracing device is arranged at the edge of the deck of the ship body and is positioned within the operating range of the piling hammer.