CN110093924B - CFG pile composite foundation construction device and construction method thereof - Google Patents
CFG pile composite foundation construction device and construction method thereof Download PDFInfo
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- CN110093924B CN110093924B CN201910350683.6A CN201910350683A CN110093924B CN 110093924 B CN110093924 B CN 110093924B CN 201910350683 A CN201910350683 A CN 201910350683A CN 110093924 B CN110093924 B CN 110093924B
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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Abstract
The invention relates to a CFG pile composite foundation construction device, which comprises a bottom plate, wherein a cutting assembly is arranged on the bottom plate, universal wheels are arranged below the bottom plate and at the four corners of the bottom plate, rod bodies are penetrated and connected with the bottom plate in a sliding way and are arranged on the bottom plate and at the four corners of the bottom plate, the rod bodies are vertical to the bottom plate, the universal wheels are rotationally connected to the end parts of the rod bodies far away from the bottom plate, a fixing part for fixing the rod bodies to any position on the bottom plate to adjust the height of each universal wheel is arranged on the bottom plate, a bubble level meter is arranged on, the rod body drives the universal wheel to adjust the height of the universal wheel by driving the rod body to move on the bottom plate, so that the bottom plate is in a horizontal state on the ground, make and keep the horizontality when cutting assembly cuts the pile head, reduced operating personnel and carried out the work load of artifical repairment to the pile head to the manpower has been saved, and improved the cutting effect when cutting the pile head.
Description
Technical Field
The invention relates to the technical field of building foundation construction, in particular to a CFG pile composite foundation construction device and a construction method thereof.
Background
The CFG pile is a cement fly ash gravel pile, which is a variable-strength pile with certain strength and is prepared by mixing gravel, stone chips, sand and fly ash with cement and adding water and mixing the mixture by various pile forming machines. The CFG pile is a low-strength concrete pile, can fully utilize the combined action of bearing capacity of soil among the piles, can transmit load to a deep foundation and has better technical performance and economic effect. The cement fly ash gravel pile (CFG pile) method is suitable for treating the foundations of cohesive soil, silt soil, sandy soil, mucky soil with a relatively hard soil layer at the pile end and a bearing capacity standard value not less than 70KPa, non-under-consolidation artificial filling and the like.
Chinese patent with publication number CN203960868U discloses a CFG pile head cutting device, which comprises a cutting knife wheel, and is characterized in that: the cutting knife wheel is driven by a small-sized fuel engine, the small-sized fuel engine is arranged on the frame, the rear end of the frame is sleeved on the support and can move along the support, a positioning locking rotating handle is arranged at the rear end of the frame, a cooling system is further arranged on the frame, four wheels are arranged on the lower portion of the support, a handle with a belt is arranged on the back of the upper portion of the support, and an operating button is arranged on the handle. But its weak point lies in, has more impurity such as clod rubble on the ground between the stake and leads to the ground unevenness, moves the frame on subaerial, can lead to the frame to drive the cutting break bar and can't be in the horizontality for when cutting the pile head, cause the pile head to cut each position of back tangent plane highly different, need adopt artificial mode to carry out artificial repairment to the tangent plane after the cutting, wasted a large amount of manpowers, and reduced the cutting effect to the pile head.
Disclosure of Invention
The invention aims to provide a CFG pile composite foundation construction device which can cut a pile head along the horizontal direction and improve the cutting effect of the pile head so as to save manpower.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a CFG stake composite foundation construction equipment, includes the bottom plate, be provided with cutting assembly on the bottom plate, the four corners that just is located the bottom plate under the bottom plate is provided with the universal wheel, the four corners that just is located the bottom plate on the bottom plate wears to establish and sliding connection has the body of rod, the body of rod is perpendicular with the bottom plate, the universal wheel rotates the tip that is connected to the body of rod and keeps away from the bottom plate, be provided with on the bottom plate and be used for fixing the body of rod optional position on to the bottom plate, with the mounting of adjusting the height of each universal wheel, be provided with the bubble spirit level.
By adopting the technical scheme, when the pile head needs to be cut, the rod body is driven to move on the bottom plate, so that the rod body drives the universal wheel to adjust the height of the universal wheel, the bottom plate is in a horizontal state on the ground, the cutting assembly is driven to be in a horizontal state, and the horizontal state is kept when the cutting assembly cuts the pile head, so that the height of each position on the tangent plane of the pile head is prevented from being different after the pile head is cut, the workload of an operator for trimming the pile head is reduced, the labor is saved, and the cutting effect of the pile head during cutting is improved; and through the height of the body of rod of each position of adjustment for the body of rod can drive whole bottom plate and go up and down, makes the cutting subassembly can follow different height and cut the pile head, has improved composite foundation construction device's result of use.
The invention is further configured to: the mounting includes the perpendicular to bottom plate and is located the fixed plate of every body of rod position, the fixed plate is located the bottom plate and deviates from the face of universal wheel, wear to establish and sliding connection has the butt pole with the body of rod butt on the fixed plate, the tip perpendicular to butt pole that the body of rod was kept away from to the butt pole is provided with the connecting plate, be provided with the spring between connecting plate and the fixed plate, the one end of spring is connected to on the connecting plate, and the other end is connected to on the fixed plate, the spring housing is located on the butt pole.
Through adopting above-mentioned technical scheme, the elasticity that the butt-joint pole can resist the spring supports tightly to the body of rod to make the body of rod fixed to the bottom plate on, prevent that the body of rod from driving the universal wheel and removing, when the position of the body of rod needs to be adjusted, through the pulling butt pole resist the elasticity of spring keep away from the body of rod can, remove through the pulling butt-joint pole and can accomplish the fixed and regulation to the body of rod, convenient simple, and fixed effect is better.
The invention is further configured to: the end part of the abutting rod close to the rod body is provided with an abutting plate matched with the outer wall of the rod body.
Through adopting above-mentioned technical scheme, setting up of butt board has increased and the body of rod between area of contact, has increased the frictional force between butt pole and the body of rod to further improved the fixed effect of butt pole drive butt board to the body of rod.
The invention is further configured to: the rod body is provided with a groove along the length direction of the rod body, a rack is arranged in the groove along the length direction of the groove, and the abutting block clamped between the adjacent tooth parts on the rack is arranged on the abutting plate.
Through adopting above-mentioned technical scheme, when the butt pole drives the butt piece joint to the rack on between the adjacent tooth portion, tooth portion on the rack can play further effect of blockking to the butt pole, prevents that the body of rod from moving on the bottom plate along vertical direction to the fixed effect of the butt pole to the body of rod has further been improved.
The invention is further configured to: the utility model discloses a pole body, including the pole body, be provided with the fixed block on the butt joint pole, offer the opening that is used for supplying the fixed block to pass on the fixed plate, offer the fixed slot that is used for supplying the fixed block joint, keeps away from the pole body in order to drive the butt joint pole on the face that the fixed plate deviates from the body of rod, the fixed slot is located the position setting at adjacent opening place on the fixed plate.
Through adopting above-mentioned technical scheme, drive the fixed block with the butt pole and pass the opening, the elasticity of resisting the spring this moment rotates the butt pole for the butt pole drives the fixed block joint to in the fixed slot, makes the butt pole fixed to the state that breaks away from the body of rod, thereby conveniently adjusts the position of the body of rod under the state of not drawing the butt pole.
The invention is further configured to: the cutting assembly comprises a shell which is integrally arranged in a semicircular shape, a cutter is connected to the shell in a rotating mode, one half of the cutter is located outside the shell, a first motor used for driving the cutter to rotate in the shell is arranged on the shell, sliding grooves are formed in the two sides of the bottom plate on the bottom plate, sliding blocks connected to the sliding grooves in the two sides of the shell in a sliding mode are arranged on the shell, and a driving piece used for driving the sliding blocks to move in the sliding grooves is arranged in the sliding grooves.
Through adopting above-mentioned technical scheme, after fixing the bottom plate to the horizontality, remove in the spout through driving piece drive slider for the slider drives the cutter in the casing and to the pile head cutting, need not to remove whole bottom plate this moment, makes the cutter can follow the horizontality and cut the pile head, has improved the cutting effect when cutting the pile head, has reduced the work load when artifical follow-up is maintained, thereby has saved the manpower.
The invention is further configured to: the driving piece comprises a threaded lead screw which is connected in the sliding groove in a rotating mode along the length direction of the sliding groove, the sliding block is in threaded connection with the threaded lead screw, and a second motor which is used for driving the threaded lead screw to rotate is fixedly arranged at one end, located in the sliding groove, of the bottom plate.
Through adopting above-mentioned technical scheme, drive the screw lead screw through the second motor and rotate, because of slider threaded connection on the screw lead screw for the slider can not rotate along with the rotation of screw lead screw, thereby makes the slider drive the casing and remove towards the pile head, accomplishes the cutting to the pile head, and the setting that adopts the screw lead screw passes through driving motor forward and reverse rotation, can drive the casing and accomplish reciprocating motion, and the removal process is comparatively steady.
The invention is further configured to: s1: treating the original ground, removing soil for cultivating and planting the ground surface, removing barriers, leveling the ground, and marking underground structures and pipelines within the range of the treated ground;
s2: measuring and paying off, wherein a technician pays out the specific position of each CFG pile according to a design drawing and marks the specific position;
s3: the drilling machine is in place, long twist drills are adopted for drilling the CFG piles, after the drilling machine is in place, the vertical marker posts on the front, the back, the left and the right of the tower body of the drilling machine are used for checking the correcting positions of the tower body and the guide rods, the drilling machine is vertically aligned with the center point of the pile position, the perpendicularity of the drilled holes is measured by a method of hanging balls on a drilling frame, and the perpendicularity of the drilling rod can also be controlled by a perpendicularity regulator;
s4: drilling to form a hole, before drilling, closing a drill bit valve, moving a drill rod downwards until the drill bit contacts the ground, starting a motor to drill, slowing down and then speeding up the drilling until the drill bit reaches a designed elevation, and recording the drilling depth;
s5: pouring and pulling the mixed material into a pipe, intensively feeding the mixed material by using a centralized mixing station, transporting the mixed material to the site by using a mixer truck, continuously pumping the mixed material by using a ground pump, stopping the pump for waiting the mixed material, starting to pull the pipe after the drill pipe core pipe is filled with the mixed material, controlling the pulling speed to be 2-3 meters per minute, and continuously feeding the pipe by pulling the pipe, wherein the height of the pile head is not less than 0.5 meter higher than the ground;
s6: clearing away soil between piles, adopting an excavator to clear and transport the soil between piles after the CFG pile construction is finished and the mixture reaches the strength, and preventing the excavator from damaging a pile body below the pile top elevation during clearing and transporting;
s7: cutting the pile head by adopting a CFG pile composite foundation construction device;
s8: polishing the pile head, and flattening the pile top from the periphery to the middle by adopting a steel chisel and a hand hammer;
s9: pile foundation detection, composite foundation slab static load test and low-strain pile body integrity detection;
s10: constructing pile caps, namely arranging C35 or C30 reinforced concrete pile caps on the pile tops of CFG piles, intensively processing a steel bar framework by using a steel bar length, then conveying the steel bar framework to the site, pouring by using a shaping template, and covering and maintaining by using geotextile after pouring is finished;
s11: backfilling soil between piles, wherein the backfilled soil is filled twice, each layer is tamped by a small frog rammer, and the compacted thickness is not less than 10 cm and not more than 20 cm;
s12: and constructing a mattress layer.
By adopting the technical scheme, in the step S7, the CFG pile composite foundation construction device is used for cutting the pile head, so that the cutter can cut the pile head along the horizontal state, the height difference of each position of the pile head on the cut surface after cutting is reduced, the workload during manual trimming in the subsequent step S8 is reduced, the labor-saving effect is achieved, and the cutting effect during cutting the pile head is improved.
The invention is further configured to: the method for cutting the pile head by adopting the CFG pile composite foundation construction device in the step S7 comprises the following steps:
s701: pulling the abutting rod to enable the abutting rod to drive the fixing block to penetrate through the opening in the fixing plate, and rotating the abutting rod by resisting the elasticity of the spring at the moment to enable the abutting rod to drive the fixing block to be clamped in the fixing groove, so that the abutting rod is fixed to be separated from the rod body;
s702: the positions of the rod bodies at the four corners of the bottom plate are adjusted by observing the bubble level meter, so that the whole bottom plate drives the cutter to be in a horizontal state, and when the cutter is adjusted to be in the horizontal state, the fixed block on the abutting rod is moved out of the fixed groove, so that the abutting rod resists the elasticity of the spring and abuts against the rod bodies;
s703: the abutting rod can drive the abutting block to be clamped between the adjacent tooth parts on the rack, so that the rod body is fixed on the bottom plate, the universal wheel is prevented from being driven by the rod body to slide on the bottom plate, and the cutter is fixed to be in a horizontal state;
s704: when the pile head needs to be cut, the first motor and the second motor are opened, the first motor can drive the cutter to rotate, the second motor can drive the threaded lead screw to rotate, the sliding block moves on the threaded lead screw, the sliding block drives the shell to move towards the pile head, and the cutter in the shell finishes cutting the pile head.
By adopting the technical scheme, in the step S701, the fixing block is clamped in the fixing groove, so that an operator can conveniently adjust the position of the rod body under the state that the abutting rod is not pulled, in the step S702, the position of each rod body is adjusted to ensure that the rod body drives the whole bottom plate to keep a horizontal state, so that the cutter is in a horizontal state, in step S703, the abutting rod abuts against the rod body against the elastic force of the spring, so that the rod body is fixed on the bottom plate, and the whole bottom plate is fixed to a horizontal state on the ground, in step S704, the threaded lead screw is driven by the second motor to rotate, so that the slide block moves in the sliding groove, thereby make the casing drive the cutter to the pile head cutting for the pile head is comparatively level and smooth by the cutting, cutting effect when having improved the pile head cutting has reduced the manual work load of repairing of follow-up installer, thereby has saved the manpower.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the pile head cutting machine is characterized in that a rod body slides on a bottom plate, when the bottom plate is located on a relatively uneven ground, the rod body drives a universal wheel to abut against the ground, the whole bottom plate is in a horizontal state, a cutter is driven by the bottom plate to be in a horizontal state, at the moment, a threaded lead screw is driven by a second motor to rotate, a sliding block moves in a sliding groove, the sliding block drives a shell to move towards the pile head, the cutter keeps the horizontal state to cut the pile head, the pile head is cut relatively smoothly, the workload of follow-up personnel in trimming is reduced, manpower is saved, and the cutting effect of the pile head in cutting is improved;
2. the butt-joint rod can resist the elasticity of the spring to drive the butt-joint block to abut against the adjacent tooth part on the rack, so that the rod body is fixed on the bottom plate, the rod body is prevented from driving the universal wheel to move, the fixation of the rod body can be completed by pulling the butt-joint rod to move, and the butt-joint rod is convenient and simple and has a better fixing effect.
Drawings
FIG. 1 is a schematic overall structure of the present invention;
FIG. 2 is an exploded view of the present invention showing the slider and threaded lead screw;
FIG. 3 is a schematic structural view of the present invention showing a butt rod and a butt block;
FIG. 4 is a schematic view of the present invention showing the structure of the opening and the fixing groove;
fig. 5 is a schematic view showing a structure of a groove and a rack gear according to the present invention.
In the figure, 1, a bottom plate; 11. a universal wheel; 12. a rod body; 121. a groove; 122. a rack; 13. a bubble level; 14. a fixing plate; 141. a butting rod; 142. a spring; 143. a butt joint plate; 144. a butting block; 145. a fixed block; 146. an opening; 147. fixing grooves; 148. a connecting plate; 15. a housing; 151. a cutter; 152. a first motor; 153. a slider; 16. a chute; 161. a threaded lead screw; 162. a second motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the CFG pile composite foundation construction device disclosed by the invention comprises a base plate 1, universal wheels 11 are arranged below the base plate 1 and positioned at four corners of the base plate 1, a cutting assembly is arranged on the base plate 1, the cutting assembly comprises a shell 15 which is integrally arranged in a semicircular shape, a cutter 151 is rotatably connected in the shell 15, a half of the cutter 151 is positioned outside the shell 15, and a first motor 152 for driving the cutter 151 to rotate in the shell 15 is arranged on the shell 15.
As shown in fig. 1, in order to adjust the positions of the four corners of the bottom plate 1, so that the bottom plate 1 can be kept in a horizontal state on uneven ground, the four corners of the bottom plate 1 on the bottom plate 1 are penetrated and slidably connected with rod bodies 12, the rod bodies 12 are perpendicular to the bottom plate 1, and the universal wheels 11 are rotatably connected to the end parts of the rod bodies 12 far away from the bottom plate 1.
As shown in fig. 1, a bubble level 13 is provided on a surface of the base plate 1 facing away from the universal wheels 11 in order to observe whether or not the base plate 1 is adjusted to a horizontal state.
Referring to fig. 1 and 3, in order to fix the rod 12 to the adjusted state after the rod 12 slides on the bottom plate 1, a fixing plate 14 is disposed on the bottom plate 1 perpendicular to the bottom plate 1 and at a position where each rod 12 is located, the fixing plate 14 is located on a surface of the bottom plate 1 away from the universal wheel 11, an abutting rod 141 abutting against the rod 12 is disposed on the fixing plate 14 in a penetrating and sliding manner, a connecting plate 148 is disposed at an end of the abutting rod 141 away from the rod 12 perpendicular to the abutting rod 141, a spring 142 is disposed between the connecting plate 148 and the fixing plate 14, one end of the spring 142 is connected to the connecting plate 148, the other end of the spring 142 is connected to the fixing plate 14, and the spring 142 is sleeved on the abutting rod.
When the position of the rod body 12 needs to be adjusted, firstly, the butt joint rod 141 is pulled towards the direction away from the rod body 12 to resist the elastic force of the spring 142, at this time, the rod body 12 is driven to move on the bottom plate 1, the position of the universal wheel 11 on the rod body 12 is adjusted, after the adjustment is finished, the butt joint rod 141 is loosened, the butt joint rod 141 is enabled to resist the elastic force of the spring 142 to abut on the rod body 12, the rod body 12 is enabled to abut on the bottom plate 1, the rod body 12 is enabled to be fixed on the bottom plate 1, and the rod body 12 is prevented from driving the universal wheel 11 to.
Referring to fig. 1 and 3, in order to increase the friction between the end of the abutting rod 141 and the rod 12 and further improve the fixing effect of the abutting rod 141 on the rod 12, an abutting plate 143 engaged with the outer wall of the rod 12 is disposed at the end of the abutting rod 141 close to the rod 12.
With reference to fig. 3 and 5, in order to further improve the fixing effect of the rod 12 on the base plate 1 and prevent the rod 12 from driving the universal wheel 11 to move on the base plate 1, a groove 121 is formed in the rod 12 along the length direction of the rod 12, a rack 122 is arranged in the groove 121 along the length direction of the groove 121, and an abutting block 144 clamped between adjacent teeth on the rack 122 is arranged on the abutting plate 143; the abutting rod 141 can drive the abutting block 144 to be clamped between the adjacent tooth parts on the rack 122 against the elastic force of the spring 142, so that the fixing effect of the abutting block 144 on the rod body 12 is further improved.
With reference to fig. 3 and 4, in order to fix the abutting block 144 at the end of the abutting rod 141 to the position away from the rack 122, a fixing block 145 is disposed on the abutting rod 141, an opening 146 for allowing the fixing block 145 to pass through is formed on the fixing plate 14, a fixing groove 147 is formed on a surface of the fixing plate 14 away from the rod body 12, and the fixing groove 147 is located on the fixing plate 14 and is adjacent to the position of the opening 146.
When the abutting rod 141 needs to be fixed to a state separated from the rod 12, the abutting rod 141 is moved on the fixing plate 14, so that the abutting rod 141 drives the fixing block 145 to pass through the opening 146, and at this time, the abutting rod 141 is rotated by the elastic force of the resisting spring 142, so that the abutting rod 141 drives the fixing block 145 to be clamped in the fixing groove 147, and the abutting rod 141 is fixed to the state separated from the rod 12, thereby conveniently adjusting the position of the rod 12.
Referring to fig. 1 and 2, in order to drive the housing 15 to move towards the pile head when the bottom plate 1 is fixed to the horizontal state, so that the cutter 151 cuts the pile head, sliding grooves 16 are formed in the bottom plate 1 and located on two sides of the bottom plate 1, and sliding blocks 153 connected in the sliding grooves 16 on the two sides are arranged on the housing 15; in the present embodiment, in order to prevent the slide block 153 from being separated from the slide groove 16 in the vertical direction, the cross section of the slide groove 16 is formed in a "T" shape, and the slide block 153 is disposed to be engaged with the slide groove 16 in the "T" shape.
Referring to fig. 1 and 2, in order to drive the sliding block 153 to move in the sliding chute 16, a threaded lead screw 161 is rotatably connected in the sliding chute 16 along the length direction of the sliding chute 16, the sliding block 153 is connected to the threaded lead screw 161 by a thread, and a second motor 162 for driving the threaded lead screw 161 to rotate is fixedly arranged at one end of the sliding chute 16 on the bottom plate 1.
When bottom plate 1 is adjusted to the horizontality, drive screw thread lead screw 161 through second motor 162 and rotate, slide in spout 16 because of slider 153, make slider 153 can not rotate along with screw thread lead screw 161's rotation, thereby make slider 153 move on screw thread lead screw 161, slider 153 can drive casing 15 and move towards the pile head, make cutter 151 in the casing 15 accomplish the cutting to the pile head along the horizontal direction, thereby cutting effect when having improved the pile head cutting, work load when having reduced operating personnel and having maintained the pile head, thereby the manpower has been saved.
The construction method comprises the following steps: s1: treating the original ground, removing soil for cultivating and planting the ground surface, removing barriers, leveling the ground, and marking underground structures and pipelines within the range of the treated ground;
s2: measuring and paying off, wherein a technician pays out the specific position of each CFG pile according to a design drawing and marks the specific position;
s3: the drilling machine is in place, long twist drills are adopted for drilling the CFG piles, after the drilling machine is in place, the vertical marker posts on the front, the back, the left and the right of the tower body of the drilling machine are used for checking the correcting positions of the tower body and the guide rods, the drilling machine is vertically aligned with the center point of the pile position, the perpendicularity of the drilled holes is measured by a method of hanging balls on a drilling frame, and the perpendicularity of the drilling rod can also be controlled by a perpendicularity regulator;
s4: drilling to form a hole, before drilling, closing a drill bit valve, moving a drill rod downwards until the drill bit contacts the ground, starting a motor to drill, slowing down and then speeding up the drilling until the drill bit reaches a designed elevation, and recording the drilling depth;
s5: pouring and pulling the mixed material into a pipe, intensively feeding the mixed material by using a centralized mixing station, transporting the mixed material to the site by using a mixer truck, continuously pumping the mixed material by using a ground pump, stopping the pump for waiting the mixed material, starting to pull the pipe after the drill pipe core pipe is filled with the mixed material, controlling the pulling speed to be 2-3 meters per minute, and continuously feeding the pipe by pulling the pipe, wherein the height of the pile head is not less than 0.5 meter higher than the ground;
s6: clearing away soil between piles, adopting an excavator to clear and transport the soil between piles after the CFG pile construction is finished and the mixture reaches the strength, and preventing the excavator from damaging a pile body below the pile top elevation during clearing and transporting;
s7: cutting the pile head by adopting a CFG pile composite foundation construction device;
s701: pulling the abutting rod 141 to make the abutting rod 141 drive the fixing block 145 to pass through the opening 146 on the fixing plate 14, and at this time, rotating the abutting rod 141 against the elastic force of the spring 142, so that the abutting rod 141 drives the fixing block 145 to be clamped into the fixing groove 147, and the abutting rod 141 is fixed to a state of being separated from the rod 12; the fixing block 145 is clamped into the fixing groove 147, so that an operator can conveniently adjust the position of the rod body 12 under the condition that the abutting rod 141 is not pulled;
s702: the positions of the rod bodies 12 at four corners of the bottom plate 1 are adjusted by observing the bubble level meter 13, so that the whole bottom plate 1 drives the cutter 151 to be in a horizontal state, and when the cutter is adjusted to be in the horizontal state, the fixing block 145 on the abutting rod 141 is moved out of the fixing groove 147, so that the abutting rod 141 abuts against the rod bodies 12 against the elastic force of the spring 142; the positions of the rod bodies 12 are adjusted, so that the rod bodies 12 drive the whole bottom plate 1 to keep a horizontal state, and the cutter 151 is positioned in the horizontal state;
s703: the abutting rod 141 can drive the abutting block 144 to be clamped between adjacent tooth parts on the rack 122, so that the rod body 12 is fixed on the bottom plate 1, the rod body 12 is prevented from driving the universal wheel 11 to slide on the bottom plate 1, and the cutter 151 is fixed to be in a horizontal state; the abutting rod 141 abuts against the rod body 12 against the elastic force of the spring 142, so that the rod body 12 is fixed on the bottom plate 1, the whole bottom plate 1 is positioned on the ground and fixed to a horizontal state, and the fixing of the rod body 12 can be completed by pulling the abutting rod 141 to move, which is convenient and simple;
s704: when the pile head needs to be cut, the first motor 152 and the second motor 162 are turned on, the first motor 152 can drive the cutter 151 to rotate, the second motor 162 can drive the threaded lead screw 161 to rotate, so that the sliding block 153 moves on the threaded lead screw 161, the sliding block 153 drives the shell 15 to move towards the pile head, and the cutter 151 in the shell 15 finishes cutting the pile head;
the universal wheels 11 at four corners of the bottom plate 1 are driven by the rod body 12 to abut against uneven ground, so that the bottom plate 1 is kept in a horizontal state, and the cutter 151 in the shell 15 is driven to move towards the pile head, so that the pile head is cut off by the cutter 151 in the horizontal state, the cutting effect on the pile head is improved, the workload of subsequent operators for manual leveling is reduced, and the manpower is saved;
s8: polishing the pile head, and flattening the pile top from the periphery to the middle by adopting a steel chisel and a hand hammer;
s9: pile foundation detection, composite foundation slab static load test and low-strain pile body integrity detection;
s10: constructing pile caps, namely arranging C35 or C30 reinforced concrete pile caps on the pile tops of CFG piles, intensively processing a steel bar framework by using a steel bar length, then conveying the steel bar framework to the site, pouring by using a shaping template, and covering and maintaining by using geotextile after pouring is finished;
s11: backfilling soil between piles, wherein the backfilled soil is filled twice, each layer is tamped by a small frog rammer, and the compacted thickness is not less than 10 cm and not more than 20 cm;
s12: and constructing a mattress layer.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a CFG stake composite foundation construction equipment, includes bottom plate (1), be provided with cutting assembly on bottom plate (1), bottom plate (1) is down and the four corners that is located bottom plate (1) is provided with universal wheel (11), its characterized in that: the bottom plate is characterized in that four corners of the bottom plate (1) are penetrated by a rod body (12) in a sliding connection mode, the rod body (12) is perpendicular to the bottom plate (1), the universal wheels (11) are rotatably connected to the end portions, far away from the bottom plate (1), of the rod body (12), fixing parts are arranged on the bottom plate (1) and used for fixing the rod body (12) to any position on the bottom plate (1) to adjust the height of each universal wheel (11), bubble gradienters (13) are arranged on the surface, far away from the universal wheels (11), of the bottom plate (1), the fixing parts comprise fixing plates (14) which are perpendicular to the bottom plate (1) and located at the position of each rod body (12), the fixing plates (14) are located on the surface, far away from the universal wheels (11), of the bottom plate (1), and abutting rods (141) abutted to the rod body (12) are penetrated by the fixing plates (14, the end part, far away from the rod body (12), of the abutting rod (141) is provided with a connecting plate (148) perpendicular to the abutting rod (141), a spring (142) is arranged between the connecting plate (148) and the fixed plate (14), one end of the spring (142) is connected to the connecting plate (148), the other end of the spring is connected to the fixed plate (14), and the abutting rod (141) is sleeved with the spring (142).
2. A CFG pile composite foundation construction device according to claim 1, wherein: and the end part of the abutting rod (141) close to the rod body (12) is provided with an abutting plate (143) matched with the outer wall of the rod body (12).
3. A CFG pile composite foundation construction device according to claim 2, wherein: a groove (121) is formed in the rod body (12) along the length direction of the rod body (12), a rack (122) is arranged in the groove (121) along the length direction of the groove (121), and a butt joint block (144) clamped between adjacent tooth portions on the rack (122) is arranged on the butt joint plate (143).
4. A CFG pile composite foundation construction device according to claim 3, wherein: be provided with fixed block (145) on butt pole (141), offer opening (146) that are used for supplying fixed block (145) to pass on fixed plate (14), offer on the face that fixed plate (14) deviate from the body of rod (12) and be used for supplying fixed block (145) joint, keep away from fixed slot (147) of the body of rod (12) with drive butt pole (141), fixed slot (147) are located on fixed plate (14) and are adjacent to the position setting at opening (146) place.
5. A CFG pile composite foundation construction device as claimed in claim 4, wherein: the cutting assembly comprises a shell (15) which is integrally arranged in a semicircular shape, a cutter (151) is connected to the shell (15) in a rotating mode, one half of the cutter (151) is located outside the shell (15), a first motor (152) used for driving the cutter (151) to rotate in the shell (15) is arranged on the shell (15), sliding grooves (16) are formed in the two sides of the bottom plate (1) and located on the bottom plate (1), sliding blocks (153) which are connected into the sliding grooves (16) on the two sides in a sliding mode are arranged on the shell (15), and driving pieces used for driving the sliding blocks (153) to move in the sliding grooves (16) are arranged in the sliding grooves (16).
6. A CFG pile composite foundation construction device as claimed in claim 5, wherein: the driving piece comprises a threaded lead screw (161) which is connected in the sliding groove (16) in a rotating mode along the length direction of the sliding groove (16), the sliding block (153) is connected to the threaded lead screw (161) in a threaded mode, and a second motor (162) which is used for driving the threaded lead screw (161) to rotate is fixedly arranged at one end, located on the sliding groove (16), of the bottom plate (1).
7. A CFG pile composite foundation construction method comprising the CFG pile composite foundation construction method apparatus of claim 6, characterized in that:
s1: treating the original ground, removing soil for cultivating and planting the ground surface, removing barriers, leveling the ground, and marking underground structures and pipelines within the range of the treated ground;
s2: measuring and paying off, wherein a technician pays out the specific position of each CFG pile according to a design drawing and marks the specific position;
s3: the drilling machine is in place, long twist drills are adopted for drilling the CFG piles, after the drilling machine is in place, the vertical marker posts on the front, the back, the left and the right of the tower body of the drilling machine are used for checking the correcting positions of the tower body and the guide rods, the drilling machine is vertically aligned with the center point of the pile position, the perpendicularity of the drilled holes is measured by a method of hanging balls on a drilling frame, and the perpendicularity of the drilling rod can also be controlled by a perpendicularity regulator;
s4: drilling to form a hole, before drilling, closing a drill bit valve, moving a drill rod downwards until the drill bit contacts the ground, starting a motor to drill, slowing down and then speeding up the drilling until the drill bit reaches a designed elevation, and recording the drilling depth;
s5: pouring and pulling the mixed material into a pipe, intensively feeding the mixed material by using a centralized mixing station, transporting the mixed material to the site by using a mixer truck, continuously pumping the mixed material by using a ground pump, stopping the pump for waiting the mixed material, starting to pull the pipe after the drill pipe core pipe is filled with the mixed material, controlling the pulling speed to be 2-3 meters per minute, and continuously feeding the pipe by pulling the pipe, wherein the height of the pile head is not less than 0.5 meter higher than the ground;
s6: clearing away soil between piles, adopting an excavator to clear and transport the soil between piles after the CFG pile construction is finished and the mixture reaches the strength, and preventing the excavator from damaging a pile body below the pile top elevation during clearing and transporting;
s7: cutting the pile head by adopting a CFG pile composite foundation construction device;
s8: polishing the pile head, and flattening the pile top from the periphery to the middle by adopting a steel chisel and a hand hammer;
s9: pile foundation detection, composite foundation slab static load test and low-strain pile body integrity detection;
s10: constructing pile caps, namely arranging C35 or C30 reinforced concrete pile caps on the pile tops of CFG piles, intensively processing a steel bar framework by using a steel bar length, then conveying the steel bar framework to the site, pouring by using a shaping template, and covering and maintaining by using geotextile after pouring is finished;
s11: backfilling soil between piles, wherein the backfilled soil is filled twice, each layer is tamped by a small frog rammer, and the compacted thickness is not less than 10 cm and not more than 20 cm;
s12: and constructing a mattress layer.
8. The CFG pile composite foundation construction method of claim 7, wherein: the method for cutting the pile head by adopting the CFG pile composite foundation construction device in the step S7 comprises the following steps:
s701: the abutting rod (141) is pulled to enable the abutting rod (141) to drive the fixing block (145) to penetrate through the opening (146) in the fixing plate (14), at the moment, the abutting rod (141) is rotated against the elastic force of the spring (142), the abutting rod (141) drives the fixing block (145) to be clamped into the fixing groove (147), and the abutting rod (141) is fixed to be separated from the rod body (12);
s702: the positions of the rod bodies (12) at four corners of the bottom plate (1) are adjusted by observing the bubble level meter (13), so that the whole bottom plate (1) drives the cutter (151) to be in a horizontal state, and when the cutter is adjusted to be in the horizontal state, the fixing block (145) on the abutting rod (141) is moved out of the fixing groove (147), so that the abutting rod (141) abuts against the rod bodies (12) against the elasticity of the spring (142);
s703: the abutting rod (141) can drive the abutting block (144) to be clamped between the adjacent tooth parts on the rack (122), so that the rod body (12) is fixed on the bottom plate (1), the rod body (12) is prevented from driving the universal wheel (11) to slide on the bottom plate (1), and the cutter (151) is fixed to be in a horizontal state;
s704: when the pile head needs to be cut, the first motor (152) and the second motor (162) are opened, the first motor (152) can drive the cutter (151) to rotate, the second motor (162) can drive the threaded lead screw (161) to rotate, the sliding block (153) moves on the threaded lead screw (161), the sliding block (153) drives the shell (15) to move towards the pile head, and the cutter (151) in the shell (15) completes cutting of the pile head.
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| CN111074891B (en) * | 2019-12-30 | 2022-04-15 | 中交第二公路工程局有限公司 | Pile cutting equipment for breaking pile head concrete structure and using method thereof |
| CN111851490B (en) * | 2020-08-25 | 2021-09-07 | 中铁上海工程局集团有限公司 | CFG pile cutting machine |
| CN113550311B (en) * | 2021-07-24 | 2022-09-09 | 中铁广州工程局集团深圳工程有限公司 | Subway vehicle unfavorable geology CFG pile foundation treatment construction method |
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