33results about How to "Good pile effect" patented technology

The invention discloses a hollow stiffness-core slurry-solidified discrete material pile and a construction method thereof. The periphery of a pile body is a slurry-solidified discrete material pile. The center of the pile body is a small-diameter prefabricated concrete pipe pile. Slurry filling holes are left on the pile wall of the prefabricated concrete pipe pile at intervals. Slurry enters discrete materials through holes in the middle of the concrete pipe pile and the slurry filling holes. Peripheral discrete materials are integrally cemented and solidified through cement slurry. At the same time, under the effect of slurry filling pressure, the slurry seeps into pile periphery soil bodies and the strength of the pile periphery soil is improved; the slurry fills the holes in the middle of the concrete pipe pile; and a prefabricated pipe pile can be formed by multiple sections which can be connected through bolts. The construction method comprises technical steps of: forming holes, placing the pipe pile, installing a sealing cover and a slurry filling pump, washing the holes by using clean wash, putting the discrete materials, filling the slurry, solidifying, forming the pile and the like. The hollow stiffness-core slurry-solidified discrete material pile and the construction method have the advantages that the construction processes are clear, the construction speed is fast, the pile forming effect is good, the bearing capacity is high, the manufacturing cost is low, the resources are fully utilized, the environment is protected and the energy is saved.

A rotating squeezing concrete filling pile construction method, uses boring tool solid boring with olive type solid borer to drill, rotatably squeezes the soil body to form a solid boring whose surroundings soil body is pressed to the designed deepness, and then reversely turning and lifting the drill stem, meanwhile pumping ultra-fluid state concrete in the hollow-drill stem, vibratedly inserting the drill stem in a reinforcing steel cage after lifting out the drill stem. Boreholes are formed by using olive type solid borer to rotating squeeze the soil body, which does not need to take out earth, has a favorable pressing dense function to surroundings soil body, and rotatably squeezes the concrete filling pile borehole as an once creating pore. Adopting the inventive rotatably squeezing dense soil body pore-creating method, the pile surroundings soil body is stabilized by densification, the compactness of the pile surroundings soil body is improved about 30%, the pile side friction resistance is improved about 30%, the pile end support force is improved about 50-70%; the unconsolidated formation concrete filling coefficient is only 1.25, the construction cost is reduced, which has good pile-formation effect and can improve work efficiency for about 20-30%; the method is suitable for hard and compact clay layer, soil layer containing larger gravel amount and air slaking pulverize rock bedding, meanwhile has economy and environment protection effect; the invention has advantages of simple structure, low fabrication cost, being apt to popularize and spread, and being widely used in concrete filling pile construction.

The invention relates to a screw pile lowering device applying force through the ground, and a pile lowering method. The screw pile lowering device comprises a pile body and a force applying mechanism; the pile body comprises a steel outer tube and a concrete pile body, wherein the horizontal sections of the steel outer tube and the concrete pile body are each in a ring shape; the length of the steel outer tube is smaller than the length of the concrete pile body; the outer circumferential face of the steel outer tube is provided with a first external thread in the length direction of the steel outer tube, and the inner circumferential face of the steel outer tube is provided with an internal thread in the length direction of the steel outer tube; the outer circumferential face of the concrete pile body is provided with a second external thread matched with the internal thread; and a tubular clamp clamps the steel outer tube from the upper end of the steel outer tube to drive the steelouter tube to be rotationally screwed into the ground, and a gravity device downwards presses the steel outer tube. Hammering and static pressing are not needed, the pile lowering effect is good, ground holding is firm, the speed is high, damage to a pipe pile is small, and the linearity of the pipe pile is good.

The invention belongs to the field of building pile foundation engineering construction, and particularly relates to a cobble stratum super three-axis agitation stake. The cobble stratum super three-axis agitation stake comprises three drill rods, a drill bit component fixed to the bottom of the drill rods, and a blade component connected to the drill rods, wherein the drill bit component is connected with a stepless speed change power head through the drill rods, and the drill rods are connected to a pile frame through a supporting frame; the drill bit component comprises a drill collar connected to the drill rods, a drilling rig connected to the drill collar, and a hollow drill bit, and three to four alloy tool bits are fixed to the drilling rig; the blade component comprises multiple sets of blades connected to the drill rods, and the blades are cutter type blades. The drilling bit component transmits the rotation moment of the power head through the drill rods and conducts drilling into soil mass, drilling capacity is high, abrasion of the drilling rig is small, and efficient construction of the three-axis agitation stake in hard stratums including cobble stratum is achieved; furthermore, pollution can not be caused during construction, construction site is clean and tidy, noise is low, mud recovery and treatment are not needed, and an environment-friendly construction technology is realized.

The invention discloses an efficient pile driving apparatus for road construction. The efficient pile driving apparatus structurally comprises a steel wire rope, a heavy hammer, an upright frame, a pile supporting device, a cross rod, walking wheels, a car body, a hydraulic telescoping device, a supporting frame and a guide wheel device, wherein the bottom of the car body is provided with the walking wheels; the car body is connected with the upright frame through the cross rod; the upright frame is mutually perpendicular to the cross rod; one side, which is far away from the cross rod, of theupright frame is perpendicularly connected with the pile supporting device; the heavy hammer is arranged above the pile supporting device; the heavy hammer is connected with one end of the steel wirerope. The efficient pile driving apparatus for the road construction, which is disclosed by the invention, has the beneficial effects that the pile driving apparatus is provided with the pile supporting device, has a pile supporting function, a pile does not need to be manually supported, and the efficient pile driving apparatus is simple and convenient to operate, can be used for guaranteeing the perpendicularity of a wood pile while being used for saving manpower and a material resource, and is good in pile driving-into effect.

The invention discloses a hollow stiffness-core slurry-solidified discrete material pile and a construction method thereof. The periphery of a pile body is a slurry-solidified discrete material pile. The center of the pile body is a small-diameter prefabricated concrete pipe pile. Slurry filling holes are left on the pile wall of the prefabricated concrete pipe pile at intervals. Slurry enters discrete materials through holes in the middle of the concrete pipe pile and the slurry filling holes. Peripheral discrete materials are integrally cemented and solidified through cement slurry. At the same time, under the effect of slurry filling pressure, the slurry seeps into pile periphery soil bodies and the strength of the pile periphery soil is improved; the slurry fills the holes in the middle of the concrete pipe pile; and a prefabricated pipe pile can be formed by multiple sections which can be connected through bolts. The construction method comprises technical steps of: forming holes, placing the pipe pile, installing a sealing cover and a slurry filling pump, washing the holes by using clean wash, putting the discrete materials, filling the slurry, solidifying, forming the pile and the like. The hollow stiffness-core slurry-solidified discrete material pile and the construction method have the advantages that the construction processes are clear, the construction speed is fast, the pile forming effect is good, the bearing capacity is high, the manufacturing cost is low, the resources are fully utilized, the environment is protected and the energy is saved.

The invention relates to a windproof and breathable garment material comprising an upper base fabric layer and a lower base fabric layer, wherein a middle fuzz layer is arranged between the upper base fabric layer and the lower base fabric layer; the upper surface of the upper base fabric layer is embedded with a surface fuzz layer consisting of surface terry; the lower surface of the lower base fabric layer is embedded with a bottom surface fuzz layer consisting of bottom terry; and the root of the surface terry and the root of the bottom terry are respectively vertically arranged on the upper base fabric layer and the lower base fabric layer. The invention has the following beneficial effects: the windproof and breathable effects are very obvious so that the root of the terry is extruded and dense along with the tightening of the middle bottom fabric; the amount of fuzz clusters in a unit area is obviously increased; the root of the terry is vertically arranged on the bottom fabric so as to generate a good velvet effect; and good breathable and windproof performances are achieved.

The invention provides a discrete material core expansion concrete pile and a construction method thereof. The discrete material core expansion concrete pile comprises a concrete semi-hollow pile and a discrete material pile core. An inner cavity of the concrete semi-hollow pile is filled with the discrete material pile core. The construction method of the discrete material core expansion concrete pile comprises the steps of hole forming, steel pipe pile die downward pressing, pile body periphery concrete pouring, pile body center discrete material throwing, vibration pile die pulling, pulp supplementing and pile forming and the like. The discrete material of the center of a pile body of the discrete material core expansion concrete pile is good in integrity and high in strength. The pile body is high in overall bearing force and large in rigidity. The construction cost is low, and low carbon and environment friendliness are achieved. The discrete material core expansion concrete pile and the construction method thereof can be widely applied to the foundation project.

The invention relates to a high-pressure rotary jet drilling machine capable of achieving directional swing jet at any azimuth angle and a construction method. The high-pressure rotary jet drilling machine comprises a power head and a drill rod, wherein a multi-circle absolute value encoder I is mounted on a driving shaft of a final driving stage of the drill rod on the power head; a sliding frameassembly is arranged on the drill rod; a multi-circle absolute value encoder II is arranged on the sliding frame assembly; the multi-circle absolute value encoder I and the multi-circle absolute value encoder II are connected with an industrial personal computer through CAN buses; and the drill rod is in a multi-section type, and all sections of the drill rod are connected through positioning connecting assemblies, so that the positions of all the sections of the drill rod are kept consistent. According to the high-pressure rotary jet drilling machine, parameter setting is convenient, the automation degree is high, a swing jet starting point and a swing jet returning point CAN be selected at will according to construction requirements, different modes such as continuous rotary jet, continuous swing jet, fixed-point rotary jet, fixed-point swing jet and continuous fixed jet are obtained, the swing jet direction and angle are still kept after the number of the drill rod is increased ordecreased, and swing jet motion is reliably transmitted.

The invention discloses a multi-head stirring type large-diameter cast-in-situ pipe pile device. The multi-head stirring type large-diameter cast-in-situ pipe pile device comprises a main unit, a winch, a drill stem assembly, a positioning frame, a power device and a background concrete processing system. The main unit and the winch are sequentially arranged on a base. The drill stem assembly is fixed to the top of the positioning frame, and all drill stems work at the same time during one-time drilling. The end-to-end closed multi-head stirring type large-diameter cast-in-situ pipe pile device is formed through simultaneous pile sinking of the multiple annular drill stems during construction by adjusting the angles of the drill stems. By means of the device, the application range of a cement mixing pile is widened; in addition, the outer wall of a multi-head stirring type large-diameter cast-in-situ pipe pile is in a wavy stripe shape, in this way, the contact area between the pile and soil is greatly increased, and the side friction resistance of the pile can be improved. According to the multi-head stirring type large-diameter cast-in-situ pipe pile device, the construction technique is clear, the construction speed is high, the pile forming effect is good, the bearing capacity is high, and manufacturing cost is low.

The invention discloses an explosive hollow picket. Including the pile barrel 4; the bottom of the pile barrel 4 is hinged with a group of drill point valves through the hinge rod 2; each drill point valve 1 is evenly distributed along the bottom circumference of the pile barrel; each drill point valve 1 is provided with a hinge ball at the inner lower part 13; the hinge ball 13 is connected with the explosive propelling device arranged at the bottom of the stake barrel 4 . The invention has a simple structure and a reasonable structure; it can solve the problems of difficult pile drilling, unstable pile foundation and low bearing capacity under complex geological conditions; the pile forming effect is ideal, safe and reliable; the explosive hollow picket pile of the invention can be used The hard soil layer or stones under the pile barrel are first blown loose by the explosive bag, and then the top of the pile barrel is driven until the pile is formed, and finally the concrete is poured. The process of the invention is simple and feasible.

The invention provides a structure for in-situ protection of a pressure pipeline transversely penetrating through a deep foundation pit and surrounding soil-retaining and a construction method. The construction process of the soil-retaining structure comprises the steps that firstly, a first-stage underground continuous wall is constructed on the two sides of the pipeline to be protected in situ,the first-stage underground continuous wall is broken off at the position close to pipeline to be protected in situ, then a steel sheet pile supporting structure and a composite pile retaining wall are constructed on the outer side of the first-stage underground continuous wall, wherein the composite pile retaining wall is arranged on the outer side of the breaking region, is composed of MJS jet grouting pile reinforcing bodies composed of multiples mutually-occlusive MJS jet grouting piles and multiples micro steel pipe piles inserted into the MJS jet grouting pile reinforcing bodies, and isused for completely shielding the breaking region, and the steel sheet pile supporting structure is composed of two rows of steel sheet piles constructed on the two sides of the composite pile retaining wall. According to the structure and the construction method, the influence on the environment is greatly reduced, before the foundation pit is excavated, the effect of closing the surrounding structure is achieved, the possibility that water seepage, water leakage and collapse occur at a continuous wall reverse-constructing position when the foundation pit is excavated is effectively reduced,and the safety coefficient during foundation pit excavating and continuous wall reverse constructing is increased.

The invention discloses an unloading thin-walled box-shaped retaining wall supported by oblique and vertical combined steel pipe piles. The wall module of the box type includes a rear exterior wall, an exterior wall of the front side, a left exterior wall, and a right exterior wall. The relative positions of the box-shaped wall modules are provided with multiple transverse inner partition walls. The relative positions of the box-shaped wall modules are There is a longitudinal inner partition wall, and an intermediate bearing plate is provided at the relative position inside the box-shaped wall module. Unloading plate, the bottom of the box-shaped wall module is provided with a horizontally arranged raft, the bottom of the raft is provided with a number of vertically arranged vertical steel pipe piles, and the left side of the raft is provided with a number of oblique steel pipe piles module. The beneficial effect of the invention is that it can be applied to the edges of various foundation pits with different complex terrains, and has good stability and convenient construction.

The invention provides a novel coral sand foundation pile using an expansion agent and a construction method. Carrier piles are uniformly buried inside the coral sand foundation, and the pile bottom of the carrier pile is provided with a lower compacted filling material area; the lower part The expansion agent is filled inside the tamping filler area to form a bottom expansion head structure; the outer wall of the carrier pile is provided with a plurality of side wall extension expansion head branches, and the interior of the side wall extension expansion head branches is filled with expansion agent and Magnetic mortar, and an electromagnet device for controlling the fluidity of the magnetic mortar is arranged inside the branch of the side wall extension expansion head. In this method, expansion agent is added to the expansion area at the bottom of the carrier pile and the branch area of ​​the extension head of the side wall to make it expand, extrude the coral sand around the pile, increase the density of the coral sand, reduce the pore water pressure of the coral sand, and the coral sand particles The effective pressure will increase.

The invention discloses a telescopic anti-drill-balling drill mixing pile drill bit. The telescopic anti-drill-balling drill mixing pile drill bit comprises an upper mixing pile drill bit (1), a lower mixing pile drill bit (2) and a clamping ring (3) for connecting and sealing the upper and lower mixing pile drill bits. The telescopic anti-drill-balling drill has the advantages that by making substantial improvements on the thicknesses, the distance and structures of upper and lower blades (12) and (23) of the conventional mixing pile drill bit, the defects of poor adaptability of a cement mixing pile drill bit to stratums, non-uniform stirring and easiness in causing drill balling are overcome radically. The telescopic anti-drill-balling drill mixing pile drill bit has the advantages of reasonable and economical design, simple structure, convenience in installation and operation and good piling effect. By improving the conventional mixing pile drill bit, the telescopic anti-drill-balling drill mixing pile drill bit is reasonable in design, simple in structure, convenient to install and operate, reliable in tightness, good in pile-forming effect, economical and practical.

A non-disturbance carbonized pile forming equipment and construction method thereof, the equipment includes a pile frame, a curing agent supply device, a foam supply device and a liftable stirring device arranged on the pile frame; the liftable stirring device includes Pile-forming sheath, outer stirring shaft, inner stirring shaft, outer rotating blade and inner rotating blade; the length of the inner stirring shaft is greater than the length of the outer stirring shaft; the outer stirring shaft is set with a gap between the outer part of the inner stirring shaft cavity; the outer stirring shaft is placed inside the pile sheath; the outer rotating blade is arranged at the bottom end of the outer stirring shaft; the inner rotating blade is arranged at the bottom end of the inner stirring shaft; the height of the outer rotating blade is higher than that of the inner rotating blade; The curing agent supply device generates curing agent and delivers it to the cavity between the outer stirring shaft and the inner stirring shaft; the foam supply device generates foam and delivers it to the cavity between the outer stirring shaft and the inner stirring shaft. The invention has the advantages of reasonable structure, environmental protection, energy saving and convenient operation.

The construction method of threaded pile with superfluid concrete pumping in the center of the auger drill pipe and its thread making device. At present, there are many construction methods for concrete pouring piles in building construction. For example: superfluid concrete pouring into piles, which cannot form piles Screw threads have the disadvantages of wasting concrete and high cost. However, the existing threaded pile construction equipment is expensive, and the synchronization problem is difficult to solve. It is difficult to form threads and is difficult to succeed. The present invention can solve the above problems. The construction method of the spiral drill pipe central pump injection superfluid concrete threaded pile, first drills to the design depth with a long spiral drill with a thread making device, and then starts the hydraulic jack to extend the screw thread at the end. The fabricator reverses and lifts the drill pipe at the same time, pours superfluid concrete through the hollow part of the drill pipe while pulling out the drill pipe, and finally puts out the drill pipe and inserts it into a reinforcement cage. The invention is applicable to various building constructions.