34results about How to "Improve pile sinking efficiency" patented technology

The invention discloses a hammering pile sinking and synchronous pile tip and side grouting structure and a hammering pile sinking and synchronous pile tip and side grouting process in a pile tip of apile shoe-provided pipe pile, and belongs to the field of a construction method.. According to the grouting method, a center penetrating hammer is used for hammering the pile tip to expand a pile shoe so that the pile tip can be hit into the pile shoe; the pile tip sinks and takes a pre-stressed pipe pile to sink together; and the pile tip and the pile side are synchronously expanded to realize grouting treatment inside a grouting passage. The grouting structure disclosed by the invention is relatively high in hammering penetration capability; a synchronous grouting system can commendably play a lubrication effect in a pile sinking process and can reduce the friction resistance of the pile side; after pile sinking is ended, the strength improvement can provide a higher single pile bearingcapacity; a hammering process is performed under the ground; construction noises can be controlled commendably; and the height of an elevator is adjustable, namely the hammer drop journey can be corrected according to the geological conditions of the current pile sinking depth, so that higher pile sinking efficiency is achieved. The structure and the process disclosed by the invention have low requirements on equipment; the bearing capacity of an equipment platform generally needs not to be specially treated, all equipment can be recycled after the construction is ended, and good economicalbenefits are realized.

An H-shaped supporting pile made of prefabricated reinforced concrete comprises an H-shaped hoop and an H-shaped standard reinforced concrete pile section, wherein the H-shaped hoop is formed by a steel reinforcement framework, provided with an H-shaped section and comprises a vertical stirrup, a triangle frame hoop and an 'S'-shaped stirrup, the bottom edges of the triangle frame hoop are connected with a plurality of main reinforcement ribs longitudinally, the inner side of the 'S'-shaped stirrup is connected with longitudinal inner reinforcement ribs longitudinally, wedge-shaped recesses are arranged on both the left and the right side of the H-shaped hoop, and two ends of the H-shaped standard reinforced concrete pipe section are provided with pile head portions. The H-shaped supporting pile is provided with the optimum section characters of a horizontal force resistant pipe for bearing side earth pressure, and the steel reinforcement ribs and concrete can be obviously saved; industrialized production of shaped commercial piles is realized, pile sinking efficiency is improved, and labor force is reduced; and construction of high-pressure spinning spraying piles between every two piles is realized, anti-seepage probability is improved since cement slurry sprayed by the high-pressure spinning spraying piles is restrained by the H-shaped section.

The invention provides a pile sinking construction method based on an assembly movable platform. The method comprises the following steps that a, steel pipe piles are constructed in a plate pile construction area in the plate pile paving direction side by side; b, the tops of each row of steel pipe piles are provided with a transverse beam; c, longitudinal beams are uniformly arranged between every two transverse beams at intervals and are distributed in the plate pile paving direction; d, panels parallel to the transverse beams are arranged on the longitudinal beams; e, crawler cranes are placed on a walking plane; f, guiding frames are erected between the tops of the two transverse beams which are not provided with the panels; g, plate piles are lifted through the crawler cranes, and the plate piles are constructed after being subjected to guiding positioning through the guiding frame; and h, the panels, the longitudinal plates and the guiding frames between the two transverse beams close to the plate piles are disassembled, and the steps from f to g are repeated in the area where the plate piles are not constructed. According to the pile sinking construction method based on the assembly movable platform, the stress is clear, the method cannot be influenced by wind waves, and the precision and efficiency of pile sinking are high.

The invention relates to a pile stabilizing frame for pile sinking of an offshore wind power batter pile group and a pile sinking method. The pile stabilizing frame comprises a supporting frame, a first limiting frame and a second limiting frame; the first limiting frame and the second limiting frame are arranged at two opposite ends of the supporting frame correspondingly; rotatable first batter pile positioning mechanisms are arranged on the first limiting frame; a plurality of second batter pile positioning mechanisms are arranged on the second limiting frame; and on a horizontal plane, the projection area of the first limiting frame is smaller than or equal to the projection area of the second limiting frame. According to the pile stabilizing frame, fixing and inclination adjusting of a plurality of batter piles can be achieved, the batter piles do not need to be hoisted by moving ship position for multiple times, on the one hand, the safety risk is reduced, on the other hand, the working procedures can be reduced, the pile sinking efficiency is improved, and then the installation cost is saved. The rotatable second batter pile positioning mechanisms are arranged to be matched with the plurality of first batter pile positioning mechanisms, so that the overall weight of equipment can be reduced, the production and installation difficulty is reduced, and the cost is saved.

The invention discloses a positioning and pile sinking device of self-transportation buried piles, and relates to the technical field of pile sinking equipment of positioning piles. The device comprises a positioning device, a transportation device and a pile sinking device; the positioning device includes a baseplate, a distance controller and a driving wheel; the transportation device includes a belt connecting rod, a conveying belt and belt limiting grooves; and the pile sinking device includes a pile sinking connecting plate, a pile sinking lifting rod, a pile sinking block, a pile sinking turner, a turnover plate, a turnover plate limiting groove, a rotating buckle and a rotating baseplate. The device uses the distance controller for controlling the driving wheel to perform the pile sinking positioning, and is provided with the conveying belt and multiple belt limiting grooves in the conveying belt for carrying and transporting positioning piles; in the pile sinking place, the positioning piles on the conveying belt are conveyed into the turnover plate limiting groove of the turnover plate, and are overturned by the pile sinking turner; and the pile sinking lifting rod drives the pile sinking block to repeatedly beat to finish the pile sinking work, so that the pile sinking efficiency is high, the labor intensity of workers is low, and the modern building demands are accorded with.

The invention discloses a pile-sinking construction method for a deep riprap unfavorable geologic region, and the pile-sinking construction method firstly performs earthwork replacing operation of a vertical enclosure structure area, and performs vertical pile construction or steel plate pile enclosure structure construction in an area in which replacement is completed. The pile-sinking construction method is characterized in that the earthwork replacing operation comprises the following steps: (1) measuring, paying off and positioning; (2) defining one group by a plurality of pile tubes which are arranged in parallel and are provided with movable pile tips, and performing pipe-sinking construction; (3) backfilling fine grained soil into one group of immersed tubes which are constructed; (4) after earthwork backfilling is completed, reserving the last pile tube as the first one of a next group, pulling off the rest of the pile tubes, thereby forming a cob wall; and (5) repeating steps (2) to (4), and performing pipe-sinking backfilling operation of the next group of pile pipes until earthwork of the vertical enclosure structure area is replaced. The pile-sinking construction method is convenient in construction, is high in pile sinking efficiency, is low in construction cost, and can strength the water-stop effect of the vertical enclosure structure.

The invention relates to a prestressed concrete composite pile, in particular to a prestressed concrete composite pile adopting post-tensioning method prestress tension. A deconstructed finite elementassembled prestressed pile suitable for pile bottom hammering pile driving comprises a pile body and a pile top. The pile body comprises a pile body plate I and a pile body plate II, a hollow pile body is defined by the pile body plate I and the pile body plate II, and flange structures are embedded into the top and the bottom of the pile body. The middle of the pile top is hollow consistent withthe pile body, a preformed hole allowing a longitudinal prestressed reinforcement to be inserted is formed in the pile top wall in the longitudinal direction, and transverse reinforcements are distributed in the transverse direction at certain intervals. The deconstructed finite element assembled prestressed pile has the beneficial effects that the standard degree is high, and the construction end product quality is high; the product anti-cracking ability is good; noise in the pile driving process can be greatly reduced; concrete can be poured after pile driving is carried out, and the hollowportion can be reserved according to the work condition and design requirements; the pile body wall is adopted as one part of the pile, and the wall protection function of the whole pile is achieved;and multiple piles can be spliced through upper flanges and lower flanges.

The invention relates to a pile guiding device for pile sinking, in particular to a pile guiding device capable of reducing noise during pile sinking construction. The pile guiding device capable of reducing the noise during pile sinking construction comprises a hammer and a pile head, the hammer is hoisted in a pile cavity and can move up and down in the pile cavity; the tip end of the pile headextends out of the bottom of a pile, the top is clamped into the pile cavity, a lifting member is fixedly connected to the top of the pile head, and the other end of the lifting member penetrates through the axial direction of the hammer to be is connected with an outer member; and the hammer hammers the pile head under the external force effect to drive the pile to move downwards. Compared with the prior art, the pile guiding device has the following advantages that the effect of upper side resistance of a soil layer on a pile body is reduced, and the pile sinking efficiency is improved; andthe hammer works in the pile cavity, and noise during pile sinking construction is greatly reduced.

The invention discloses a prefabricated hollow pile pipe valve-type pile shoe and a construction method thereof. The prefabricated hollow pile pipe valve-type pile shoe comprises a hollow pile pipe and a valve assembly, and the valve assembly is located at the lower end of the hollow pile pipe; the valve assembly comprises a plurality of valves, a plurality of fixed valves, a connecting ring and awedge-shaped plug, the multiple fixed valves and the multiple valves are connected to the connecting ring in a penetrating mode, the ends, close to the connecting ring, of the fixed valves are fixedly connected with the hollow pile pipe, and the valves can rotate relative to the hollow pile pipe; when the fixed valves and the valves are in a natural drooping state, a conical structure is formed;and when the wedge-shaped plug moves downwards under the action of external force, all the valves rotate outwards, and a circular ring is defined by the ends, close to the connecting ring, of the fixed valves and the ends, close to the connecting ring, of the valves. The prefabricated hollow pile pipe valve-type pile shoe is ingenious in structural design, convenient to operate, easy to use and low in construction cost.

The invention discloses a large U-shaped steel sheet pile construction technology. The large U-shaped steel sheet pile construction technology comprises the steps of digging grooves in the corresponding driven positions of U-shaped steel sheet piles; and carrying out insertion and vibration sinking on a plurality of U-shaped steel sheet piles in a segmented manner, and carrying out limiting and guiding on each U-shaped steel sheet pile from top and the from the bottom at the same time in the process of insertion and vibration sinking. With the large U-shaped steel sheet pile construction technology, the accuracy of pile sinking is high, and pile deviation and the pile top elevation can be effectively controlled.

The invention discloses a pile sinking positioning device, which relates to the technical field of positioning pile sinking equipment, comprising a positioning device, a transport device and a pile sinking device, the positioning device includes a bottom plate, a distance control machine and a driving wheel, and the transport device includes a belt connecting rod, The conveying belt and the belt limit groove, the pile sinking device includes a pile sinking connecting plate, a pile sinking lifting rod, a pile sinking block, a pile sinking rotary machine, a turning plate, a turning plate limiting groove, a rotating buckle and a rotating bottom plate; The control machine controls the driving wheel to carry out pile sinking positioning. A conveyor belt and multiple belt limit slots are provided on the conveyor belt to carry and transport the positioning piles. At the pile sinking site, the positioning piles on the conveyor belt are transported to In the limit groove of the turning plate of the turning plate, after turning over by the pile sinking turning machine, the pile sinking lifting rod drives the pile sinking block to strike repeatedly to complete the pile sinking work. The pile sinking efficiency is high, and the labor intensity of workers is small, which meets the needs of modern buildings.