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Author

Li Ze

Bio: Li Ze is an academic researcher. The author has contributed to research in topics: Pile & Foundation (engineering). The author has an hindex of 5, co-authored 29 publications receiving 83 citations.

Papers
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Patent
03 Apr 2013
TL;DR: In this paper, a transition-section-free single-pile foundation construction and fan equipment installation process for a shallow sea area wind farm is described, which comprises a transportation method.
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.

8 citations

Patent
24 Jun 2015
TL;DR: In this article, a construction method of a large single-pipe pile foundation of a shallow-sea wind power plant is described, and the construction method includes the following steps that a, buoyancy tanks are positioned and fixed; b, singlepipe piles are hammered to sink; c, the buoys are withdrawn; d, accessories are installed.
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.

7 citations

Patent
10 Sep 2014
TL;DR: In this paper, a shallow sea wind power plant rock-socketed monopile foundation construction method is presented, which includes the following steps of positioning of a self-elevating lifting platform and a transport ship, monopile hammering pile sinking, drilling, continual hammering piles sinking and installation of accessories.
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.

7 citations

Patent
15 Feb 2017
TL;DR: In this article, an assembled offshore single-pile foundation construction platform is presented, which consists of a stable pile frame, a steel protection cylinder and steel pipe piles; a positioning cylinder is arranged in the center position of the stable pile and multiple locking oil cylinders are symmetrically embedded in the upper end and/or the lower end of the positioning cylinder in the peripheral direction.
Abstract: The invention provides an assembled offshore single-pile foundation construction platform. The construction platform can serve as a large single-pile foundation drilling platform or a large single-pile driving stable pile platform, and comprises a stable pile frame, a steel protection cylinder and steel pipe piles; a positioning cylinder is arranged in the center position of the stable pile frame; multiple locking oil cylinders are symmetrically embedded in the upper end and/or the lower end of the positioning cylinder in the peripheral direction; the steel protection cylinder is inserted in the positioning cylinder, and is radially positioned by the locking oil cylinders; multiple mounting sleeves are uniformly and annularly arranged at the external of the positioning cylinder; the mounting sleeves and the positioning cylinder are fixedly connected through radial trusses; the adjacent mounting sleeves are fixedly connected through peripheral trusses; and the steel pipe piles are inserted in the mounting sleeves, and are connected with the mounting sleeves through clamping keys. The construction platform is quickly assembled through a detachable mode without needing offshore welding work, and can be recycled; and more importantly, through unique structural design, the construction platform is high in stability of bearing the wave load.

6 citations


Cited by
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Patent
07 Aug 2013
TL;DR: In this paper, a transportation method for pre-assembled main cellular sheet pile 1/4 cylinders of cellular steel sheet piles was proposed, which consists of 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.
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.

9 citations

Patent
04 Dec 2013
TL;DR: In this article, a wind generation set impeller assembling device is described, 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.
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.

7 citations

Patent
24 Jun 2015
TL;DR: In this article, a construction method of a large single-pipe pile foundation of a shallow-sea wind power plant is described, and the construction method includes the following steps that a, buoyancy tanks are positioned and fixed; b, singlepipe piles are hammered to sink; c, the buoys are withdrawn; d, accessories are installed.
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.

7 citations

Patent
10 Sep 2014
TL;DR: In this paper, a shallow sea wind power plant rock-socketed monopile foundation construction method is presented, which includes the following steps of positioning of a self-elevating lifting platform and a transport ship, monopile hammering pile sinking, drilling, continual hammering piles sinking and installation of accessories.
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.

7 citations

Patent
15 Feb 2017
TL;DR: In this article, an assembled offshore single-pile foundation construction platform is presented, which consists of a stable pile frame, a steel protection cylinder and steel pipe piles; a positioning cylinder is arranged in the center position of the stable pile and multiple locking oil cylinders are symmetrically embedded in the upper end and/or the lower end of the positioning cylinder in the peripheral direction.
Abstract: The invention provides an assembled offshore single-pile foundation construction platform. The construction platform can serve as a large single-pile foundation drilling platform or a large single-pile driving stable pile platform, and comprises a stable pile frame, a steel protection cylinder and steel pipe piles; a positioning cylinder is arranged in the center position of the stable pile frame; multiple locking oil cylinders are symmetrically embedded in the upper end and/or the lower end of the positioning cylinder in the peripheral direction; the steel protection cylinder is inserted in the positioning cylinder, and is radially positioned by the locking oil cylinders; multiple mounting sleeves are uniformly and annularly arranged at the external of the positioning cylinder; the mounting sleeves and the positioning cylinder are fixedly connected through radial trusses; the adjacent mounting sleeves are fixedly connected through peripheral trusses; and the steel pipe piles are inserted in the mounting sleeves, and are connected with the mounting sleeves through clamping keys. The construction platform is quickly assembled through a detachable mode without needing offshore welding work, and can be recycled; and more importantly, through unique structural design, the construction platform is high in stability of bearing the wave load.

6 citations