867 results about "Pile driver" patented technology

The deep water port steel pipe pile foundation construction method comprises the steps that three-dimensional geological modeling and pile position positioning are conducted, specifically, a construction area is scanned through an unmanned aerial vehicle carrying a multispectral radar, geological data are obtained, a dynamic three-dimensional geological model is constructed based on a random forest algorithm, and the pile position layout and the pile sinking path of steel pipe piles are planned; multi-parameter data real-time collection and transmission: collecting perpendicularity, pile body stress and hammering vibration data in real time, uploading encrypted data to a cloud platform through a 5G / Beidou dual channel, and storing the encrypted data; the cloud platform calculates the optimal hammering energy, the vibration frequency and the hammer stopping standard by using a reinforcement learning algorithm in combination with the dynamic three-dimensional geological model and the real-time data; and pile sinking is conducted, specifically, the posture of a pile body is monitored through a laser radar and an inertial measurement unit, a PID control algorithm is adopted to drive a walking type pile driver hydraulic system, and pile sinking is conducted. According to the method, the scientificity of pile position layout and the reasonability of a pile sinking path are improved; the pile sinking efficiency is improved; the energy consumption is reduced; the pile foundation stability is guaranteed.

The present application relates to a pile driver and a pile driving method with less wear on drill rods, and relates to the technical field of building construction, and comprises a main frame, a winch is arranged on one side surface of the main frame, a steel cable is wound on the drum of the winch, a top frame is welded on the top of the drill rod bracket, one end of the steel cable extends upward through a pulley and is connected to a drive box through a lifting ring, a motor frame is arranged in the middle of the drive box, a drive motor is connected to the center of the motor frame through bolts, the bottom drive of the drive motor is connected to a reducer, and the bottom output end of the reducer is connected to a buffer mechanism through the drive box, and the buffer mechanism comprises a connecting tube, a rebound tube, a coupling joint, a strip groove, a slider, a damping rod, a support spring and an auxiliary spring; the present application significantly reduces the wear of the drill rod during the construction process by using a high-strength, wear-resistant alloy material to make the drill rod, performing special treatment, and arranging a buffer mechanism and a guide mechanism.

The invention provides a pile driver intelligent control management method and device based on big data, and relates to the technical field of pile driver management control, and the method comprises the steps: obtaining historical pile driving data of a pile driver in an operation process, and training a control model based on the historical pile driving data; construction tasks in a future scheduling period are obtained, the pile machines and the construction tasks are input into the control model to obtain equipment control information, and the equipment control information is input into the management scheduling model to be subjected to iterative analysis to be matched with a recommended distribution scheme of the pile machines; and according to the recommended distribution scheme, the pile driver is dispatched to a designated construction site to execute a construction task, state data of the pile driver in the construction process are monitored in real time, and equipment control information of the pile driver is adjusted according to feedback of the state data. Through statistics of pile machine equipment and operator information, a big database of historical piling data is constructed and analyzed, equipment control information can be intelligently adjusted according to different construction environments, and the working efficiency and construction quality of a pile machine are improved.

The invention relates to the technical field of civil engineering construction, in particular to a precise positioning civil engineering pile foundation construction system which comprises a multi-source space sensing and positioning module, a space-time multi-dimensional data fusion module, a three-dimensional guiding and correcting module, a hydraulic control module and a closed-loop feedback optimization module. The multi-source space sensing and positioning module obtains pile machine position and attitude information through the Beidou / GNSS high-precision positioning unit, the inertia high-precision navigation unit and the laser horizontal measurement unit, and the space-time multi-dimensional data fusion module processes and fuses the information to generate unified space position data. The three-dimensional guiding and correcting module compares the data with preset pile position coordinates, if the deviation exceeds a threshold value, a correcting instruction is generated, the hydraulic control module executes the instruction and adjusts the position and the posture of a pile machine, the closed-loop feedback optimization module collects the data in the correcting process and optimizes a correcting strategy, all-weather centimeter-level precision space positioning is achieved, and the positioning precision is improved. And the accuracy and efficiency of pile foundation construction are improved.

A portal pile driver, and a cast-in-place pile construction method are provided, relating to the technical field of pile foundation construction. The portal pile driver includes a portal frame, a pile frame platform, a moving assembly, and a lifting assembly. The portal frame is erected at one side of the pile frame platform, and a power head is installed on the portal frame. A loading zone is located at the pile frame platform, and a projection of a central shaft of the power head on the pile frame platform is located in an extension direction of the loading zone. The moving assembly is located at one side or each of both sides of the loading zone, and multiple drill pipes are horizontally distributed on the moving assembly, and each drill pipe is perpendicular to a plane where the portal frame is located.

The utility model discloses a full-rotation hoisting pile driver for an offshore ship. The full-rotation hoisting pile driver comprises a full-rotation hoisting device and a pile driving device, the full-rotation lifting device comprises a base, a rotation bearing, a rotation chassis, a propeller strut and an arm support. The base is connected with the rotary chassis through the rotary bearing; the propeller strut is arranged on the rotary chassis; the lower end of the arm frame is movably connected with the propeller strut, and the propeller strut is wound with the arm frame through a steel wire rope; the piling device comprises a pile frame, a fork frame and a winding mechanism; the pile frame is connected with the upper end of the arm frame through a sliding shoe; one end of the fork frame is movably connected with the pile frame, and the other end of the fork frame is movably connected with the propeller strut; and the platform on the pile frame is connected with the corresponding winch in the machine room through the winding mechanism. According to the utility model, the full-circle slewing crane and the piling system are effectively combined, so that the piling requirements of straight piles and inclined piles can be met without frequent ship moving and positioning.

The invention discloses an intelligent Beidou pile foundation positioning control method, algorithm and system, and the method comprises the steps: obtaining real-time Beidou positioning data corresponding to the real-time position of a task pile machine and target position data corresponding to a target task to be executed by the task pile machine, and then carrying out the real-time positioning of the task pile machine based on the real-time Beidou positioning data and the target position data; the method comprises the steps of determining information of a construction environment where a task pile machine executes a target task, determining an optimal path of the task pile machine moving from a real-time position to a target position based on the information of the construction environment, and controlling the task pile machine to move from the real-time position to the target position according to the optimal path, so that path planning of the task pile machine based on intelligent Beidou positioning is effectively realized; and high-precision, high-efficiency and low-cost automatic displacement of the task pile machine in a complex environment is realized, so that the reliability and the construction generalization ability of intelligent Beidou pile foundation positioning control are further improved.

The utility model relates to the technical field of pile drivers, and discloses a water conservancy pile driver which comprises a pile driver body, and a balance weight water tank is fixedly arranged on one side of the pile driver body. According to the utility model, the counterweight water tank is arranged on the other side of the pile driver, and water can be injected into the counterweight water tank through the water injection port to improve the weight, so that the counterweight water tank replaces a counterweight block of a traditional pile driver for use, and the water injection amount in the water tank can be adjusted when various pile bodies with different weights work; water in the water tank can be discharged through the water outlet valve in the moving process of the pile driver, so that the weight is reduced, the moving energy consumption of the pile driver is reduced, the applicability of the pile driver is improved, the use cost of the pile driver is reduced, and the internal water is discharged when the pile driver stops running, so that the service life of the pile driver is prolonged. The weight of the pile driver can be reduced, so that the burden of the crawler is reduced.

The invention discloses a hydraulic static automatic pile driver and aims to provide a hydraulic static automatic pile driver which is good in structural stability and capable of effectively solving the problem that a piston rod of a pile-embracing oil cylinder in the prior art is prone to distortion and deformation. The hydraulic static force automatic pile pressing machine can effectively solve the problem that in the pile pressing process, due to the fact that the holding force is insufficient, a pressed pile slips. The device comprises a reaction frame, a hydraulic jack and a pile embracing mechanism, the pile embracing mechanism comprises a pile embracing taper sleeve, an inner hole of the pile embracing taper sleeve is a taper hole, the hydraulic jack drives the pile embracing taper sleeve to ascend and descend, and the lower end of the pile embracing taper sleeve is connected with a bottom cover; the plurality of enclasping cone cores are arranged in the cone holes; the hydraulic elements are in one-to-one correspondence with the enclasping cone cores and comprise vertical piston cavities arranged in the corresponding enclasping cone cores; the locking piston is arranged in the vertical piston cavity and divides the vertical piston cavity into an upper cavity and a lower cavity, the lower end of the locking piston is connected with a piston rod, and the lower end of the piston rod can be connected to the bottom cover in a manner of moving in the radial direction of the conical hole.

The invention belongs to the technical field of pile drivers, and discloses a foundation pile driver capable of adapting to complex terrains, which comprises a base, and further comprises cloth crawler belts, a pile driver, a driving device and a driving device, the inclined cylinders are symmetrically arranged on the two sides of the top of the base, and piling assemblies are hinged to the top ends of the inclined cylinders; through cooperation of ground anchors, springs, tooth blocks, tooth plates and other structures, supporting legs at the four corners of the pile driver are conveniently fixed according to the height of a complex terrain, the supporting legs drive the ground anchors to rapidly move downwards under the action of the elastic force of the springs, and then the ground anchors are clamped into soil; according to the pile driver, the inclined blocks are arranged on the two tooth plates, so that the inclined blocks extrude the two tooth blocks to be clamped into the tooth plates, the positions of the supporting legs are fixed after the supporting legs move downwards, then the same steps are carried out on the other three positioning assemblies in sequence, the other three supporting legs are clamped into soil of different heights, and the supporting effect of the pile driver on the complex terrain is achieved.

The invention belongs to the technical field of foundation treatment, and particularly relates to a silt geology prefabricated solidified soil pile composite foundation treatment device and a construction method, the silt geology prefabricated solidified soil pile composite foundation treatment device comprises a pile driver and a vibratory hammer, the vibratory hammer is arranged at one end of the pile driver, and the silt geology prefabricated solidified soil pile composite foundation treatment device further comprises a connecting device and a clamping device which are installed on the outer surface of the vibratory hammer. According to the sludge geology prefabricated solidified soil pile composite foundation treatment device and the construction method, by arranging an inner clamping mechanism, the inner wall of a guide pipe can be automatically attached to complete clamping of the guide pipe, and an inner clamping plate can be conveniently limited through a groove of a limiting sleeve, so that the inner clamping plate can move along the track of the groove of the limiting sleeve; the inner clamping plate can be driven to move through rotation of the driving screw rod, and the groove of the limiting sleeve can be inserted through movement of the clamping plate, so that after the inner clamping plate rotates, the inner clamping plate faces downwards, and the driving screw rod rotates reversely, the inner clamping plate does not rotate backwards but moves backwards, and the inner wall of the guide pipe can be clamped conveniently.

This invention relates to a construction method for driving piles using a vibratory driven pile unit. The original walking pile frame is replaced with a crawler crane. Utilizing the flexible movement of the crawler crane, the machine can move immediately after driving one pile to drive the next. At this time, crushed stone can be added to the previous pile, and then the pile can be extracted. This back-and-forth operation greatly improves construction efficiency. The crawler crane is equipped with an adjustment frame, which is fixed at the bottom by a bottom-fixing cylinder. The mast adjusts the upper position of the pile frame, and the adjustment frame adjusts the lower position of the pile frame, ensuring the verticality of the crushed stone piles during driving and extraction. During use, the mast adjusts the position of the pile frame, and the vibratory lifting mechanism drives the hoisting rope to move the vibratory hammer up and down through the slide frame for driving or extracting piles.

The utility model relates to the technical field of photovoltaic supports, and discloses a ground pile for a photovoltaic support, which comprises a spiral ground pile, a main mounting connector is fixed at the top end of the spiral ground pile, a ground inserting mechanism is arranged in the spiral ground pile, a mounting mechanism is further arranged in the spiral ground pile, and the ground inserting mechanism comprises four inclined holes formed in the outer wall of the spiral ground pile. Inserting rods are inserted into the inclined holes in a sliding mode, and the included angle between the inserting rods and the axis of the spiral ground pile is 20 degrees. The pile driver is connected with the front driving rod through the auxiliary mounting connector, the threaded seat and the rotating seat are driven to move inwards in the spiral ground pile, so that the four inserting rods are driven to move downwards, and when the four inserting rods and the rotating seat are connected in a sliding and clamping mode, the inserting rods cannot rotate in the moving process; and the inserting rods penetrate through the inclined holes in the initial inclined direction to be inserted into the soil, so that the soil cannot be damaged to cause soil looseness, and the stability of the ground pile mounting structure is improved.

An autonomous pile driving system identifies using a pile plan map a target location to install a pile. The system autonomously navigates towards the target location. The system autonomously detects using an object sensor system an orientation and location of the pile located within a threshold distance of the system. The system autonomously positions a tool of the autonomous pile driving system based on the detected orientation and location of the pile. The system autonomously picks up the pile using the positioned tool of the autonomous pile driving system. The system autonomously positions the pile based on the target location. The system autonomously drives the pile into ground at the target location.

The invention relates to the technical field of drainage plate positioning, and discloses a pile hole positioning method and system for a drainage plate pile pipe based on a multi-source sensor. Synchronous data acquisition of a multi-source heterogeneous sensor is achieved through a GNSS receiver and an IMU, a data basis is provided for subsequent fusion calculation, and then pile pipe root coordinates and pile pipe three-dimensional attitude angles are dynamically calculated through Kalman filtering fusion according to pile driver top coordinates and pile pipe motion data. Root posture resolving errors caused by static calibration errors and structural deformation in motion are avoided; then, the coordinates of the tip end of the pile pipe are dynamically calculated through coordinate rotation transformation, machine body motion data are introduced to compensate deviation calculation, and therefore the problem that in the prior art, due to the fact that the three-dimensional posture change of the pile pipe in the construction process is neglected, drainage plate pile hole positioning is not accurate enough is solved; and it is ensured that each pile hole can meet the design precision requirement, and the problem that the construction perpendicularity is uncontrollable is fundamentally solved.

The invention belongs to the technical field of water transportation engineering static pressure pile planting machines, and particularly relates to a fixing clamp for a cold-bending Z-shaped steel sheet pile static pressure pile planting machine. The Z-shaped steel plate is arranged at the bottom of the pile planting machine body; the clamping assembly comprises a movable clamp, a fixed clamp, a pushing assembly and a deflection assembly, the movable clamp and the fixed clamp are distributed front and back and located at the bottom of the pile planting machine body, and the pushing assembly is connected with the movable clamp and used for driving the movable clamp to move; the deflection assemblies are arranged on the opposite sides of the movable clamp and the fixed clamp respectively. According to the U-shaped static pressure pile planting machine steel sheet pile fixing clamp, the U-shaped static pressure pile planting machine steel sheet pile fixing clamp is improved, the fixing clamp is changed into a structure with a notch, the fixing clamp can clamp the locking opening position of a cold-bending Z-shaped steel sheet, and therefore under the condition that clamping force is not lost, the stability of the fixing clamp when the fixing clamp clamps the Z-shaped steel sheet is guaranteed.

The invention relates to the technical field of pile foundation construction, in particular to a long spiral secant pile construction method under water conservancy anti-seepage complex geological conditions, and the construction method comprises the steps that a long spiral pile driver is provided with a first power head and a second power head, a sleeve is pressed downwards through the second power head, and then the first power head is used for driving a drill rod to drill; the sleeve and the drill rod drill down synchronously until the drill bit drills to the elevation of the bed rock surface to form a pile hole; the sleeve is left in the pile hole, the rotary drilling rig is used for drilling the bed rock, a drill rod of the long spiral pile driver is put down to the bottom of the pile hole, concrete is pumped into the pile hole, and when the concrete is poured to the bed rock surface, the drill rod and the sleeve are lifted while the concrete is pumped into the pile hole till pressure pouring is completed. In a complex stratum with a huge thick loose high-permeability sandy gravel covering layer and ultrahigh-strength hard bed rock coexisting, high-precision stable hole forming and collapse prevention are achieved at the same time, hard rock is reliably and accurately drilled to reach the designed depth, and it is ensured that concrete secant piles are tightly engaged to form a continuous and effective diaphragm wall.

The invention discloses a hoisting pile driving barge suitable for offshore photovoltaic foundation construction and an operation method thereof. The hoisting pile driving barge comprises a main barge body, the bow of the main barge body is provided with a cabin, the middle of the main barge body is provided with a steel pile positioning system, and the stern of the main barge body is provided with a full-rotation crane and two pile driving mechanisms; the steel pile positioning system comprises four sets of steel pile positioning mechanisms which are symmetrically arranged on decks on the two sides of a ship side. The steel pile positioning mechanism comprises a positioning steel pile, a pile pulling device and a position adjusting mechanism; the rotary crane is fixed to a deck, and the two piling mechanisms are symmetrically arranged on the outer side of the main hull in the width direction of the main hull and rotationally arranged through rotary supporting structures correspondingly. According to the hoisting pile driving barge, through the steel pile positioning system and the anchoring positioning system, rapid positioning transition can be achieved, the positioning efficiency of the positioning barge is effectively improved, and the poor positioning precision is improved; the two piling mechanisms are matched with the rotary supporting structure, construction of a plurality of straight piles and inclined piles can be completed through one-time parking, and the piling efficiency in the operation construction process is improved.

The invention relates to the technical field of pile drivers, and discloses a pulse-coordinated self-adaptive regulation type road and bridge geology efficient pile driving device which comprises a vertical guide rail, a mounting part mounted on the side wall of the vertical guide rail and used for mounting a ground pulse tool, and a pulse part mounted on the mounting part and used for mounting a ground pulse tool. The pulse part is installed on the vertical guide rail and used for automatically and intermittently emitting pulse current to break a rock stratum, the piling part is installed on the vertical guide rail and used for piling and trepanning a road surface, the buffering part is installed on the piling part and used for buffering piling vibration force borne by the pulse part, and the piling efficiency is improved through cooperation of piling frequency and intermittent pulse current emission. When facing hard stratums such as rock stratums, pulse current automatically and intermittently emitted by the pulse part can generate electromagnetic force and shock waves in rocks, so that the rocks are fractured, the pile driver is effectively assisted to reduce the pile driving difficulty, and the pile driving efficiency is improved.

The invention relates to the technical field of building construction, and discloses a house building foundation engineering construction device which comprises a multi-shaft pile driver body, a power integration box is installed on one side of the multi-shaft pile driver body in a limiting and sliding mode, and a plurality of stirring piles are rotatably installed at the output end of the power integration box; driving gears are fixedly mounted on the outer sides of the top ends of the stirring piles, the multiple driving gears are in meshing transmission, and mounting cavities formed in the inner side walls of the driving gears are further included. The connecting strength between the mixing pile and the driving gears is changed through coincidence or dislocation between the permanent magnet plates and the magnetism isolating plates, so that the probability that the mixing pile is damaged when the bottom end of the mixing pile encounters a hard obstacle is reduced, and the situation that a plurality of driving gears bear extra load and impact due to mutual meshing is avoided; the driving gear and the power system are protected, the service life of the multi-shaft pile driver body is prolonged, the influence of hard obstacles on the construction progress is reduced, and the construction progress and the engineering quality of the sealing wall are improved.

The invention relates to the technical field of prefabricated pipe pile construction, in particular to an auxiliary supporting device for prefabricated pipe pile construction. Comprising a crane and a supporting pile connected with the crane through a sling, a first auxiliary supporting mechanism, a second auxiliary supporting mechanism and a piling mechanism used for impacting a tubular pile are arranged on the left side of the supporting pile, and the piling mechanism comprises a guiding assembly and an impacting assembly. In the piling process, the pipe pile is supported through the first auxiliary supporting plate and the second auxiliary supporting plate at the same time, then the first auxiliary supporting plate descends synchronously along with descending of the pipe pile, auxiliary supporting of the pipe pile is kept, and therefore the pipe pile is effectively prevented from deviating due to uneven stress or the counter-force effect of soil in the piling process; the two-stage supporting mechanism ensures that the pipe pile can keep high perpendicularity, meanwhile, the perpendicularity of the pipe pile does not need to be frequently measured in the piling process, and the piling efficiency can be greatly improved.

A side grip pile driver for driving elongated objects into a ground surface comprising: a body for attaching the pile driver to a working machine; a first and second jaw members each jaw member having a clamping interface for clamping onto the side of an object to be driven; and a driving means arranged to move at least one of the jaw members, wherein each jaw member has a jaw arms and a gripping head, wherein the jaw arm is attached to the body and the gripping head, the gripping head providing the clamping interface, the jaw arm being attached to the gripping head via an elastomer member; wherein at least one of the gripping heads of the jaw members comprises a vibrator device for vibrating the gripping head such that the gripping head is couplable to the object in vibratory engagement.

The invention discloses a spiral ground pile group anchoring system and method based on force decomposition synergy. The system comprises two spiral ground piles, an auxiliary mooring rope with the two ends connected with the ground piles and a main cable arranged between the auxiliary mooring rope. When the main cable is pulled, the auxiliary cable is forced to form a break angle by tensile force, and the two ground piles are mutually tensioned by horizontal component force generated by decomposition of the tensile force, so that a soil body between the piles is powerfully compacted. The compacted soil forms high-strength constraint, the uplift bearing capacity of the whole system is remarkably improved, and the synergistic purpose of '1 + 1gt, 2' is achieved. The device is simple in structure, low in cost, remarkable in synergism and particularly suitable for being matched with a double-head pile driver (a full-electric unmanned multi-foot double-head reverse spiral ground pile driver used in a low-adhesion environment and a cooperative control method thereof 2025120033595) to achieve rapid deployment.

The invention discloses a construction piling platform and method for an offshore photovoltaic power station, and relates to offshore piling equipment and a construction method.The construction piling platform comprises an engineering floating platform and piling devices, the left piling device, the right piling device and piling manipulators are arranged on the front portion of the engineering floating platform, and a floating platform guide part is arranged on the engineering floating platform and located between piles; a driving device and a positioning device are arranged on the engineering floating platform. The construction piling method comprises the following steps: connecting and positioning the engineering floating platform and the seabed; the piles are sunk into the seabed on the left and right sides of the floating platform guide part respectively; the engineering floating platform is moved forwards till the piling device is located at the next piling position; the piles sunk into the seabed are guided by the engineering floating platform on the left side and the right side of the floating platform guide part in the forward moving process of the engineering floating platform; and the steps are repeated, and the operation of sinking the next pair of piles into the seabed is completed till sinking of all the piles in the two rows is completed. The piling platform is simple in structure and convenient to use, can be matched with a construction method, can quickly position a piling position, and is high in working efficiency.

The invention discloses a combined type MJS pile driver and a construction method thereof, and relates to the field of MJS pile driver application, the combined type MJS pile driver comprises pile driving equipment and a newly added drill rod, one side of the pile driving equipment is provided with a lifting air cylinder, the end of the lifting air cylinder is connected with a movable multi-connecting-rod assembly, and one end of the movable multi-connecting-rod assembly is provided with a mounting bracket; the mounting support comprises a fixing frame connected with the disc, and the two ends of the fixing frame are each provided with a fixing assembly used for fixing a newly-added drill rod. According to the device, the mounting bracket and the multiple fixing assemblies are arranged and can be used for storing the newly-added drill rod and assisting dismounting and mounting of the newly-added drill rod, the fixing assemblies have a clamping effect on the newly-added drill rod, and after the newly-added drill rod is fixed by the fixing assemblies, the driving assembly drives the driving rod to rotate, so that mounting of the newly-added rod is efficient and safe; the position of the installation support can be adjusted through the movable multi-connecting-rod assembly, so that the installation support can drive the newly-added rod to move to the installation position, time and labor are saved, and the installation efficiency of the drill rod is improved.

An autonomous off-road vehicle (AOV) includes a vehicle body and a vehicle arm coupled to the vehicle body and including a set of prongs and a clamp extending outward from an end of the vehicle arm. A controller causes the vehicle arm to pick up a pile by: aligning the set of prongs with an end of the pile such that a first prong aligns with an opening on a first side of a web of the pile and a second prong aligns with a space on a second side of the web, inserting the set of prongs into the opening on the first side and the space on the second side, and compressing the clamp into an exterior surface of a flange of the pile such that the set of prongs are reciprocally compressed into an interior surface of the flange on either side of the web.

The utility model relates to the technical field of civil engineering piling, and discloses a civil engineering piling device with a positioning function, including a piling frame, casters are installed at the bottom ends of both sides of the piling frame, limit plates are installed at both sides of the top of the inside of the piling frame, both sides of the inside of the piling frame are fixedly connected with fixed plates, a first hydraulic cylinder is installed at the bottom end of the fixed plate, a positioning rod is fixedly connected to the output end of the first hydraulic cylinder, and the bottom ends of both sides of the inside of the piling frame are fixedly connected with limit slots. The civil engineering piling device with a positioning function facilitates its transfer through casters, and the staff can pull the piling frame to the piling area by hooking the handle, and then use the positioning rod to position the piling frame. When positioning, the first hydraulic cylinder is first started, and the first hydraulic cylinder pushes the positioning rod downward, and the positioning rod passes through the limit slot and is inserted into the soil to achieve positioning, which solves the problem of inconvenient positioning and movement.

The invention discloses a gravel and pebble stratum waterproof curtain construction technology, and particularly relates to the technical field of waterproof curtain construction, and the technology comprises the following steps: S1, site preparation, S2, rotary drilling rig hole guiding, S3, pile casing embedding, S4, backfilling and leveling, and S5, three-axis cement mixing pile construction. The rotary drilling rig is adopted to guide holes for construction, the problems that a three-shaft mixing pile machine for the round gravel and pebble bed cannot normally drill and collapses can be solved, the construction period is shortened, site pollution is reduced, the advantages are obvious, the penetrating power of the three-shaft mixing pile machine can be enhanced, and the construction efficiency is improved. The adverse effect that a waterproof curtain of the profile steel cement soil mixing pile cannot be closed due to the fact that a three-shaft mixing pile machine cannot drill normally is avoided, and cost is saved.

The invention relates to the technical field of pile drivers, discloses a pile driver for civil engineering construction, and aims to solve the problem that a pile body is inclined when hit by a pile hammer. When the fixed block is hit by the hammer body, the clamping block on the fixed block tends to move towards the bottom end of the pile body, so that the clamping block clings to the side wall of the pile body and tightly clamps the pile body, and the pile body is prevented from deviating when being hit and vibrated; moreover, the hammer body hits the fixing block, so that the auxiliary hammer device hits the fixing block to drive the pile body to move downwards, and the construction efficiency of the pile body is improved; when the hammer body and the supporting rod move up and down along with the pile hammer, the hammer body drives the power rod and the sliding block to reciprocate, positive pressure and negative pressure are circularly generated in pressure grooves in the upper side and the lower side of the sliding block, and when the hammer body moves downwards, high pressure is generated in a pressure groove in the lower end of the sliding block, so that the telescopic bag pushes the lower end of the clamping block to be tightly attached to the side wall of a pile body, and the friction force between the clamping block and the pile body is increased; and relative sliding between the pile body and the clamping block is prevented.

The invention discloses a combined type steel sheet pile foundation pit supporting structure, and relates to the field of foundation pit supporting, the combined type steel sheet pile foundation pit supporting structure comprises a steel sheet pile assembly, the steel sheet pile assembly comprises a plurality of first steel sheet pile components and a plurality of second steel sheet pile components, and the first steel sheet pile components and the second steel sheet pile components are alternately spliced; the first steel sheet pile component is formed by two first steel sheet piles in a staggered and sleeved mode, the second steel sheet pile component is formed by two second steel sheet piles in a staggered and sleeved mode, and the first steel sheet piles and the second steel sheet piles which are located at the adjacent positions are also arranged in a staggered and sleeved mode. By adopting the long and short steel sheet pile combined supporting mode, the input number of the steel sheet piles is reduced, meanwhile, the driving difficulty of the steel sheet piles is reduced, the loss and waste of the steel sheet piles are effectively reduced, hole guiding construction is conducted through a drilling machine, and compared with a traditional rotary drilling pile machine hole guiding mode, the needed construction operation area is smaller, and the construction efficiency is improved. The influence of surrounding houses and roads is small, and the method is more suitable for urban construction.