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.

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

The invention discloses a single-pile pile sinking method. The single-pile pile sinking method comprises the following steps: (A) a stable pile positioning platform is built; a pile inlet is formed in an opening of the stable pile positioning platform; and an inner frame of the pile inlet is adapted to an engineering pile; (B) the engineering pile is lifted to shift from the pile inlet into the stable pile positioning platform; (C) a position of a mud inlet place of the engineering pile corresponding to the center point of the engineering pile is detected, and is marked; (D) the engineering pile is shifted to enable the center point of the engineering pile to be overlapped with the mark, and is planted; and (E) the hammering pile sinking construction is performed for the engineering pile. The single-pile pile sinking method uses a stable positioning platform for positioning and stabilizing the engineering pile in the single-pile pile sinking process; compared with the prior art, the single-pile pile sinking method realizes the perpendicularity monitoring and adjustment in the whole pile sinking process, and guarantees the pile sinking perpendicularity in the pile sliding process; and the single-pile pile sinking method is not easy to be influenced by other engineering piles in the pile sinking process, and has the advantages of convenience for operation and practicability.

Single-pile pile sinking method

The invention relates to a prestressed pipe pile construction method under the geological condition of boulder clusters, in particular to a pipe pile head fixing method. The pipe pile head fixing method comprises the steps of sinking a pile according to designed elevation, keeping a pile body to be vertical and stable, utilizing two theodolites to perform longitudinal and transverse correction, and connecting steel pipes through fasteners to form a #-shaped fixing frame at the position of a pile hole so as to fix a pipe pile head after the perpendicularity and a horizontal position meet the requirements. The #-shaped fixing frame is matched with an outer wall of the pipe pile, splay steel pipe supports are arranged at two ends of the #-shaped fixing frame, the upper ends of the steel pipe supports are connected with the #-shaped fixing frame through the fasteners, the lower ends of the steel pipe supports are implanted into a soil layer, and re-checking of the perpendicularity and the horizontal position of the pipe pile is performed to ensure the vertical accuracy of the pipe pile after the pile head fixing is finished. The pipe pile head fixing method is simple, construction is convenient, protecting effect of the pipe pile is improved, the perpendicularity of the pipe pile is ensured, and the bearing capacity of the prestressed pipe pile is also improved effectively.

Pipe pile head fixing method

The invention discloses a method for controlling the construction verticality of a large-sized single pile. The method comprises the following steps of: (1) initially adjusting: hoisting the single pile into a lower pile gripper, gripping upper and lower pile grippers at the same time after the pile is basically placed in the center of the lower pile gripper, and pre-tightening all jacks uniformly; (2) finally adjusting: controlling the levelness of a flange within 1.5 millimeters, loosening a main hook, adjusting a calibration vertical line if adjustment is required, and finding a vertical line control point; (3) pressing a hammer and sinking the pile: loosening the hook, replacing a steel wire rope, sheathing the hammer, and sinking by pressing the pile; (4) sinking the pile; (5) adjusting the hamming energy till the design elevation of 0.5-1 meter is reached, controlling the penetration within 10 millimeters, and sinking the pile to the design elevation; and (6) observing the verticality and the penetration of the pile from the beginning to the end in an entire pile sinking process. Due to the adoption of the method, the problem of high-precision pile sinking of the single pile in an intertidal zone is solved, the verticality of pile sinking is less than 0.2 percent, the construction cost is greatly reduced, and the construction efficiency is increased.

Method for controlling construction verticality of large-sized single pile

The invention relates to the technical field of ocean engineering, in particular to a multifunctional construction auxiliary ship structure for steel pipe piles. The multifunctional construction auxiliary ship structure for the steel pipe piles comprises a ship body and the steel pipe piles, wherein sheets are fixedly connected to the two sides of the ship body, and a guide frame, a mechanical arm and a superstructure are arranged on the top of the ship body. The bottom of the ship body is provided with a pile holding device corresponding to the steel pipe piles. The multifunctional construction auxiliary ship structure of the steel pipe piles has complete functions, integrates the multiple functions of conveying, locating, centralizing and driving the steel pipe piles and greatly improves the installation efficiency of the steel pipe piles.

Multifunctional construction auxiliary ship structure for steel pipe piles

Pile sinking method for driving large-diameter steel pipe pile in intertidal zone

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.

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

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 discloses a novel pile implanting process for a prefabricated pipe pile and a formed pile body. The pile implanting process comprises the steps that undisturbed soil is forcedly mixed by a deep mixing machine on a site within the burying range of the prefabricated pipe pile, the prefabricated pipe pile with a pre-buried grouting channel is implanted into the ground, a proper curing agent and an additive are injected into designated stratums through the grouting channel, fixed soil is formed, and accordingly the pile body suitable for being applied to soft soil layers is formed. The novel pile implanting process for the prefabricated pipe pile is used for implanting of the prefabricated pipe pile, and the curing agent and the additive are injected into the soft soil layers such as mucky soil, silty clay and saturable soil, so that the reinforcement effect is remarkable, the pile can be put into use quickly after being treated, and the construction speed is increased; the pile side resistance and the pile end resistance are increased, and the vertical bearing force of the pile body is improved effectively; hammer piling is reduced even eliminated during construction, and the damage to the pile body is reduced; and the pollution to the environment is reduced, and the investment is saved.

Xiao Jisheng

Papers

Pile sinking method for driving large-diameter steel pipe pile in intertidal zone

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

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

Novel pile implanting process for prefabricated pipe pile and formed pile body