CN109610441B - One-column one-pile construction method adopting hydraulic vertical adjustment frame reverse construction method - Google Patents
One-column one-pile construction method adopting hydraulic vertical adjustment frame reverse construction method Download PDFInfo
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- CN109610441B CN109610441B CN201811405181.0A CN201811405181A CN109610441B CN 109610441 B CN109610441 B CN 109610441B CN 201811405181 A CN201811405181 A CN 201811405181A CN 109610441 B CN109610441 B CN 109610441B
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- 238000010276 construction Methods 0.000 title claims abstract description 42
- 230000002787 reinforcement Effects 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 4
- 239000011449 brick Substances 0.000 claims abstract description 4
- 239000002356 single layer Substances 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 4
- 239000002344 surface layer Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract 2
- 238000004140 cleaning Methods 0.000 claims description 33
- 239000002002 slurry Substances 0.000 claims description 31
- 238000013461 design Methods 0.000 claims description 21
- 239000002689 soil Substances 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 239000013049 sediment Substances 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004537 pulping Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a one-column one-pile construction method adopting a hydraulic vertical adjusting frame reverse construction method, belongs to the technical field of building engineering, and solves the problems that the existing construction method needs to consume excessive manpower and material resources and has high operation difficulty; the technical characteristics are that: the method comprises the following steps: hardening the field completely, and carrying out full hardening on the field before construction: leveling 300 thick brick slag, pouring a 200 thick C30 concrete surface layer after tamping, and internally matching with a single-layer bidirectional interval of 200mm of HRB 335-grade phi 12 deformed steel bar; paying off, burying a protective cylinder, drilling, washing the hole for the first time, and processing and installing a reinforcement cage; the invention adopts the simple hydraulic verticality adjusting system with the verticality adjusting frame method, the construction process is simple and quick to operate, and the quality, safety and progress requirements of the construction process are ensured.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a one-column one-pile construction method adopting a reverse construction method of a hydraulic vertical adjusting frame.
Background
The hydraulic verticality adjusting system is a modification of the verticality adjusting system, and mainly comprises: the main verticality adjusting principle of the verticality adjusting frame and the hydraulic jacking device is basically the same as that of a verticality adjusting system by a verticality adjusting disc method. The vertical adjustment plate is connected with the hard terrace through a ground anchor, and then the perpendicularity of the supporting column is adjusted by controlling a four-point hydraulic jacking device which is mutually orthogonal; the hydraulic verticality adjusting disc method verticality adjusting system can effectively reduce labor intensity, save labor force and adjust verticality quickly through automatic transformation of the verticality adjusting disc system, but has higher specialized requirements on equipment operators, and the existing construction method needs to consume excessive manpower and material resources and has high operation difficulty, so that the method for constructing one column and one pile by adopting the hydraulic verticality adjusting frame reverse construction method is provided.
Disclosure of Invention
The invention aims to provide a one-column one-pile construction method adopting a hydraulic vertical adjusting frame reverse construction method, so as to solve the problems that the existing construction method needs to consume excessive manpower and material resources and is difficult to operate.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a hydraulic modulation platform, includes organism, unilateral regulation pole handle, support base and regulation prop up, the fixed welding support base in organism lower surface four corners department, support the setting of base can be right the organism plays the effect of support, organism inner wall top fixed welding connects the horizontal pole, connect the horizontal pole with organism inner wall fixed welding, the installation is adjusted prop up on the connection horizontal pole, adjust prop up with connect horizontal pole sliding connection, but movable end fixed wing around the connection horizontal pole right-hand member still fixed mounting, but the setting of movable end fixed wing can play right the spacing effect of regulation prop up, organism upper surface axial equipartition sets up a plurality of screw thread regulation pole, screw thread regulation pole with organism threaded connection, just screw thread regulation pole upper end fixed welding unilateral regulation pole handle.
As a further scheme of the invention: the top of the side wall of the machine body is provided with a hanging ring, and a threaded sleeve is fixedly welded in the middle of the upper surface of the machine body.
A hydraulic vertical adjusting frame reverse construction method column-pile construction method based on the hydraulic adjusting table comprises the following steps: s1, hardening the field completely, wherein the field is required to be hardened completely before construction: leveling 300 thick brick slag, pouring a 200 thick C30 concrete surface layer after tamping, and internally matching with a single-layer bidirectional interval of 200mm of HRB 335-grade phi 12 deformed steel bar;
s2, paying off and burying a protective barrel;
s201, leading out pile bit lines from each axis, wherein the allowable deviation is 5mm, marking a pile bit center point by using a shooting nail, drawing a control circle which takes the pile bit center as a circle center and the pile radius as a radius by using red paint, marking a pile number, ejecting cross lines along the axis direction and the vertical axis direction on a hard terrace by using ink lines, cutting out a wire slot by using a cutting machine in the two directions, marking a triangular direction by using red paint, and carrying out self-inspection after the axis and the pile bit lines are placed;
s202, digging a pile casing hole, burying a mouth protection pipe, wherein the cylinder body is kept vertical during burying, the upper mouth is horizontal, and the center of the pile casing is aligned to the center of the pile position by taking the center of a cross-shaped frame as the reference; the protective cylinder is formed by rolling a 3mm steel plate; the pile casing is buried into the original soil for 20cm, the allowable deviation between the central line of the pile casing and the central line of the pile position is less than or equal to 20mm, the pile casing is buried vertically, clay is used for backfilling the periphery of the pile casing to be compact, and the backfilling is required to be symmetrically carried out so as to avoid the pile casing from running;
s203, after the pile casing is buried, checking the pile position in time, and if the error is greater than the standard requirement, burying again;
s3, drilling, namely pulping by adopting bentonite, wherein the diameter of a drill bit is determined according to design and specification requirements and the condition of trial hole forming, the drilling ensures the verticality of a hole, particularly the verticality of the hole is controlled to be 1/300 at a depth of more than 35 meters, the hole forming is strictly constructed according to operation regulations, the pressure is reduced and the drilling speed is reduced when the hole is drilled, and the verticality of a drill rod is ensured; the stable condition of the pile frame is closely noticed during drilling, whether the pile casing and the soil body have sinking or not is found, the deflection is immediately lifted, the hole scanning is repeated until the perpendicularity meets the design requirement, and the percentage detection after the hole is formed ensures the perpendicularity of the pile hole;
s4, cleaning holes for the first time, circularly cleaning the pile bottom by using a high-pressure pump through a guide pipe, and strictly controlling the sediment depth to be below 5 cm; firstly, trial pore forming is needed, mud retaining walls with different performances are selected according to pore forming conditions and soil layer conditions, wherein the specific gravity of primary clear returning slurry is less than 1.30, the specific gravity of secondary clear returning slurry is less than or equal to 1.2, the viscosity is controlled to be 18-22 seconds, and the sand content is less than or equal to 5%; in the pore-forming process, the discharged slurry firstly enters a slurry sedimentation tank, a sand remover is adopted in the process, the sand content and specific gravity of the slurry are reduced, and then the slurry enters a circulating tank for use;
s5, machining and installing the reinforcement cage, wherein the reinforcement cage must be manufactured on a platform, and the diameter of the reinforcement cage must be ensured to meet the design and specification requirements; the cage body is ensured not to deform in the transportation process; the steel reinforcement cage body must be straight when manufacturing; the reserved steel bars at the lap joint positions of the upper and lower sections of steel bar cages must meet the design and specification requirements; measuring the elevation dimension before placing the reinforcement cage, determining the length of the hanging bar, and adopting 8 phi 25 reinforcement bars as main reinforcement positions of the upper and lower section cages of the guide cage to align; the reinforcement cage can not be forced to be put down, and the reinforcement cage should be slowly put down when being put down, and the reinforcement cage is put down vertically and centrally to avoid collision with the soil wall; the hanging bars should be firm so as to prevent the steel reinforcement cage from falling; the steel reinforcement cage is internally provided with phi 60 steel pipes as sound measuring pipes according to the requirement, and when the diameter d of the pile is less than 800mm, the number of the sound measuring pipes is not less than 2; when the diameter of the pile is 800< d <160 mm, the number of the piles is not less than 3; when the diameter d of the pile is more than 1600mm, the number of piles is not less than 4; the sounding pipes are symmetrically arranged along the inner side of the reinforcement cage;
s6, adjusting the verticality of the vertical column of the verticality adjusting frame;
s601, adjusting the verticality of a circular tube column, adopting a high-precision inclinometer with a miniature laser transmitter inside on site, finding out the mounting surface of the inclinometer on a steel lattice column tube through the light beam of the laser transmitter, and monitoring the inclination state of the steel lattice column tube in real time by utilizing the output of the inclinometer after the steel lattice column tube is erected; through programming, the inclinometer can be directly connected with a computer or a matched display instrument, the verticality, the inclination angle and the offset size of a measured object are intuitively reflected, a base plate provided with an inclination sensor is placed at one end of a lattice column, then a light target is placed at the other end of the lattice column, the bottom surface of the sensor is opposite to the light target, the base plate is vertical to a bus of the lattice column after being fixed, a positioning frame is connected with a hard terrace through an embedded part or an expansion screw, the firm and smooth ground is kept, the height of the positioning frame is 700mm, the length of the positioning frame is correspondingly increased to 800mm above a natural terrace for facilitating correction of a vertical adjusting frame, a pile cap is arranged in the positioning frame, after the top end of a stand column (steel pipe column) is clamped by a slide plate, a fastening bolt is fixed with the pile cap, the pile body and the positioning frame are required to be spliced on site for guaranteeing that the pile cap and the same horizontal line of the stand column, the pile body and the positioning frame are displayed through a measuring device, and the pile body is corrected in a required adjustment azimuth (eight directions) by a jack;
s602, square column sag adjustment, wherein the square column sag adjustment is similar to a column, and another rapid sag adjustment method of a laser sag gauge is adopted on site: before lifting a square column, placing a substrate provided with a laser plumb aligner at one end of a lattice column, then placing a light target at the other end of the lattice column, enabling the bottom surface of a sensor to be opposite to the light target, fixing the substrate to be vertical to a bus of the lattice column, arranging bolt holes in the square column in advance, lifting a vertical column by adopting a 120t crawler crane, fixing the two sides of the vertical column on a vertical adjustment frame by using bolts when the vertical column is lifted in place, and adjusting the position of the square column by using a crowbar until the fixing of the square column and the vertical adjustment frame is completed; the elevation of the square column top is adjusted in a preliminary step, the allowable deviation of the elevation is +/-1 cm, the square column and the vertical adjustment frame are integrally lifted by using a crawler crane, the square column is precisely positioned by using a longitudinal and transverse positioning line which is placed in advance, after the square column is positioned, the square column is displayed by using a plumb gauge bubble, and the square column is corrected in the required adjustment azimuth (eight square columns) by using a jack until the plumb gauge bubble is centered and the elevation of the pile top meets the design requirement; every procedure must be strictly controlled layer by layer, if verticality does not meet design requirements, the next procedure is forbidden;
s7, carrying out secondary hole cleaning, namely, after primary hole cleaning, extracting a drill rod, measuring the hole depth, grasping time, placing a reinforcement cage and a concrete conduit, and connecting a circulating pump set through the concrete conduit for carrying out secondary hole cleaning, wherein the purpose is to remove sediment generated when placing the reinforcement cage and the concrete conduit; the hole cleaning is carried out by taking care of supplementing the cleaning slurry to ensure the height of the liquid level of the slurry, and after the secondary hole cleaning is finished, measuring the hole depth and the hole bottom sediment by special persons, and if various indexes of the slurry in the hole do not accord with the design and specification requirements, carrying out hole cleaning again until the slurry is qualified;
s8, adopting commercial concrete for the cast-in-place pile; the designed strength grade of pile body concrete is underwater C40, the water slump is between 180 and 220mm, and the initial setting time is 6 to 8 hours;
s801, before the conduit is put into the hole, the quality of the connecting screw thread and the sealing groove should be carefully checked, the number, the measurement and the length are numbered, the length is recorded, and the height between the bottom opening of the conduit and the bottom of the hole is generally controlled to be about 50 cm;
s802, pouring underwater concrete should be carried out within 30min after the second hole cleaning, if the thickness of the bottom mud of the hole is measured again for more than 30min, and if the thickness of the bottom mud of the hole is not in accordance with the requirement, the hole cleaning is carried out again;
s803, underwater concrete pouring should be continuously carried out, the pipe burying depth should be controlled to be 3-10 m, the minimum burying depth should not be less than 2m, the pipe should be lifted and disassembled for service, the length of a lifting pipe at one time should not exceed 6m, the optimal lifting pipe length is 2.5m, the height of a concrete surface should be measured frequently, the lifting pipe length is determined, the pipe can not be lifted above the concrete surface, and the single pile pouring time should not be more than 8 hours;
s804, when the concrete pouring is about 1-2 meters higher than the pile top, stones with the diameter of 2-4cm are filled from the outer side of the steel pipe, the steel pipe is filled to a natural ground, and the pouring of broken stone and concrete on the inner side of the steel pipe is simultaneously carried out.
Compared with the prior art, the invention has the beneficial effects that: the simple hydraulic verticality adjusting system is adopted, the construction process is simple and quick to operate, and the quality, safety and progress requirements of the construction process are ensured; compared with the airbag method verticality adjusting system and the verticality adjusting system of a verticality adjusting frame (disc) method verticality adjusting system, the verticality adjusting precision and the verticality adjusting speed have great advantages; the construction technology effectively solves the problem of one-column one-pile sagging adjustment construction in the reverse construction method project.
Drawings
Fig. 1 is a schematic structural view of a hydraulic modulation table according to the present invention.
In the figure: the device comprises a machine body 1, a unidirectional adjusting rod handle 2, a supporting base 3, a lifting ring 4, an adjusting supporting top 5, a connecting cross rod 6, a threaded sleeve 7, a fixed wing at the movable end 8 and a threaded adjusting rod 9.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, in the embodiment of the invention, a hydraulic modulation table comprises a machine body 1, a unidirectional regulation rod handle 2, a support base 3 and an adjustment support 5, wherein the support base 3 is fixedly welded at four corners of the lower surface of the machine body 1, the support base 3 is arranged to play a role in supporting the machine body 1, a connection cross rod 6 is fixedly welded at the top of the inner wall of the machine body 1, the connection cross rod 6 is fixedly welded with the inner wall of the machine body 1, the adjustment support 5 is mounted on the connection cross rod 6, the adjustment support 5 is in sliding connection with the connection cross rod 6, a front movable end fixing wing 8 and a rear movable end fixing wing 8 are fixedly mounted at the right end of the connection cross rod 6, a plurality of thread regulation rods 9 are axially uniformly arranged on the upper surface of the machine body 1, the thread regulation rods 9 are in threaded connection with the machine body 1, and the unidirectional regulation rod handle 2 is fixedly welded at the upper end of the thread regulation rods 9;
the top of the side wall of the machine body 1 is provided with a hanging ring 4, and a threaded sleeve 7 is fixedly welded in the middle of the upper surface of the machine body 1.
Example 2
A one-column one-pile construction method based on the hydraulic modulation table of the embodiment 1 by adopting a hydraulic vertical modulation frame reverse construction method comprises the following steps:
s1, hardening the field completely, wherein the field is required to be hardened completely before construction: leveling 300 thick brick slag, pouring a 200 thick C30 concrete surface layer after tamping, and internally matching with a single-layer bidirectional interval of 200mm of HRB 335-grade phi 12 deformed steel bar;
s2, paying off and burying a protective barrel;
s201, leading out pile bit lines from each axis, wherein the allowable deviation is 5mm, marking a pile bit center point by using a shooting nail, drawing a control circle which takes the pile bit center as a circle center and the pile radius as a radius by using red paint, marking a pile number, ejecting cross lines along the axis direction and the vertical axis direction on a hard terrace by using ink lines, cutting out a wire slot by using a cutting machine in the two directions, marking a triangular direction by using red paint, and carrying out self-inspection after the axis and the pile bit lines are placed;
s202, digging a pile casing hole, burying a mouth protection pipe, wherein the cylinder body is kept vertical during burying, the upper mouth is horizontal, and the center of the pile casing is aligned to the center of the pile position by taking the center of a cross-shaped frame as the reference; the protective cylinder is formed by rolling a 3mm steel plate; the pile casing is buried into the original soil for 20cm, the allowable deviation between the central line of the pile casing and the central line of the pile position is less than or equal to 20mm, the pile casing is buried vertically, clay is used for backfilling the periphery of the pile casing to be compact, and the backfilling is required to be symmetrically carried out so as to avoid the pile casing from running;
s203, after the pile casing is buried, checking the pile position in time, and if the error is greater than the standard requirement, burying again;
s3, drilling, namely pulping by adopting bentonite, wherein the diameter of a drill bit is determined according to design and specification requirements and the condition of trial hole forming, the drilling ensures the verticality of a hole, particularly the verticality of the hole is controlled to be 1/300 at a depth of more than 35 meters, the hole forming is strictly constructed according to operation regulations, the pressure is reduced and the drilling speed is reduced when the hole is drilled, and the verticality of a drill rod is ensured; the stable condition of the pile frame is closely noticed during drilling, whether the pile casing and the soil body have sinking or not is found, the deflection is immediately lifted, the hole scanning is repeated until the perpendicularity meets the design requirement, and the percentage detection after the hole is formed ensures the perpendicularity of the pile hole;
s4, cleaning holes for the first time, circularly cleaning the pile bottom by using a high-pressure pump through a guide pipe, and strictly controlling the sediment depth to be below 5 cm; firstly, trial pore forming is needed, mud retaining walls with different performances are selected according to pore forming conditions and soil layer conditions, wherein the specific gravity of primary clear returning slurry is less than 1.30, the specific gravity of secondary clear returning slurry is less than or equal to 1.2, the viscosity is controlled to be 18-22 seconds, and the sand content is less than or equal to 5%; in the pore-forming process, the discharged slurry firstly enters a slurry sedimentation tank, a sand remover is adopted in the process, the sand content and specific gravity of the slurry are reduced, and then the slurry enters a circulating tank for use;
s5, machining and installing the reinforcement cage, wherein the reinforcement cage must be manufactured on a platform, and the diameter of the reinforcement cage must be ensured to meet the design and specification requirements; the cage body is ensured not to deform in the transportation process; the steel reinforcement cage body must be straight when manufacturing; the reserved steel bars at the lap joint positions of the upper and lower sections of steel bar cages must meet the design and specification requirements; measuring the elevation dimension before placing the reinforcement cage, determining the length of the hanging bar, and adopting 8 phi 25 reinforcement bars as main reinforcement positions of the upper and lower section cages of the guide cage to align; the reinforcement cage can not be forced to be put down, and the reinforcement cage should be slowly put down when being put down, and the reinforcement cage is put down vertically and centrally to avoid collision with the soil wall; the hanging bars should be firm so as to prevent the steel reinforcement cage from falling; the steel reinforcement cage is internally provided with phi 60 steel pipes as sound measuring pipes according to the requirement, and when the diameter d of the pile is less than 800mm, the number of the sound measuring pipes is not less than 2; when the diameter of the pile is 800< d <160 mm, the number of the piles is not less than 3; when the diameter d of the pile is more than 1600mm, the number of piles is not less than 4; the sounding pipes are symmetrically arranged along the inner side of the reinforcement cage;
s6, adjusting the verticality of the vertical column of the verticality adjusting frame;
s601, adjusting the verticality of a circular tube column, adopting a high-precision inclinometer with a miniature laser transmitter inside on site, finding out the mounting surface of the inclinometer on a steel lattice column tube through the light beam of the laser transmitter, and monitoring the inclination state of the steel lattice column tube in real time by utilizing the output of the inclinometer after the steel lattice column tube is erected; through programming, the inclinometer can be directly connected with a computer or a matched display instrument, the verticality, the inclination angle and the offset size of a measured object are intuitively reflected, a base plate provided with an inclination sensor is placed at one end of a lattice column, then a light target is placed at the other end of the lattice column, the bottom surface of the sensor is opposite to the light target, the base plate is vertical to a bus of the lattice column after being fixed, a positioning frame is connected with a hard terrace through an embedded part or an expansion screw, the firm and smooth ground is kept, the height of the positioning frame is 700mm, the length of the positioning frame is correspondingly increased to 800mm above a natural terrace for facilitating correction of a vertical adjusting frame, a pile cap is arranged in the positioning frame, after the top end of a stand column (steel pipe column) is clamped by a slide plate, a fastening bolt is fixed with the pile cap, the pile body and the positioning frame are required to be spliced on site for guaranteeing that the pile cap and the same horizontal line of the stand column, the pile body and the positioning frame are displayed through a measuring device, and the pile body is corrected in a required adjustment azimuth (eight directions) by a jack;
s602, square column sag adjustment, wherein the square column sag adjustment is similar to a column, and another rapid sag adjustment method of a laser sag gauge is adopted on site: before lifting a square column, placing a substrate provided with a laser plumb aligner at one end of a lattice column, then placing a light target at the other end of the lattice column, enabling the bottom surface of a sensor to be opposite to the light target, fixing the substrate to be vertical to a bus of the lattice column, arranging bolt holes in the square column in advance, lifting a vertical column by adopting a 120t crawler crane, fixing the two sides of the vertical column on a vertical adjustment frame by using bolts when the vertical column is lifted in place, and adjusting the position of the square column by using a crowbar until the fixing of the square column and the vertical adjustment frame is completed; the elevation of the square column top is adjusted in a preliminary step, the allowable deviation of the elevation is +/-1 cm, the square column and the vertical adjustment frame are integrally lifted by using a crawler crane, the square column is precisely positioned by using a longitudinal and transverse positioning line which is placed in advance, after the square column is positioned, the square column is displayed by using a plumb gauge bubble, and the square column is corrected in the required adjustment azimuth (eight square columns) by using a jack until the plumb gauge bubble is centered and the elevation of the pile top meets the design requirement; every procedure must be strictly controlled layer by layer, if verticality does not meet design requirements, the next procedure is forbidden;
s7, carrying out secondary hole cleaning, namely, after primary hole cleaning, extracting a drill rod, measuring the hole depth, grasping time, placing a reinforcement cage and a concrete conduit, and connecting a circulating pump set through the concrete conduit for carrying out secondary hole cleaning, wherein the purpose is to remove sediment generated when placing the reinforcement cage and the concrete conduit; the hole cleaning is carried out by taking care of supplementing the cleaning slurry to ensure the height of the liquid level of the slurry, and after the secondary hole cleaning is finished, measuring the hole depth and the hole bottom sediment by special persons, and if various indexes of the slurry in the hole do not accord with the design and specification requirements, carrying out hole cleaning again until the slurry is qualified;
s8, adopting commercial concrete for the cast-in-place pile; the designed strength grade of pile body concrete is underwater C40, the water slump is between 180 and 220mm, and the initial setting time is 6 to 8 hours;
s801, before the conduit is put into the hole, the quality of the connecting screw thread and the sealing groove should be carefully checked, the number, the measurement and the length are numbered, the length is recorded, and the height between the bottom opening of the conduit and the bottom of the hole is generally controlled to be about 50 cm;
s802, pouring underwater concrete should be carried out within 30min after the second hole cleaning, if the thickness of the bottom mud of the hole is measured again for more than 30min, and if the thickness of the bottom mud of the hole is not in accordance with the requirement, the hole cleaning is carried out again;
s803, underwater concrete pouring should be continuously carried out, the pipe burying depth should be controlled to be 3-10 m, the minimum burying depth should not be less than 2m, the pipe should be lifted and disassembled for service, the length of a lifting pipe at one time should not exceed 6m, the optimal lifting pipe length is 2.5m, the height of a concrete surface should be measured frequently, the lifting pipe length is determined, the pipe can not be lifted above the concrete surface, and the single pile pouring time should not be more than 8 hours;
s804, when the concrete pouring is about 1-2 meters higher than the pile top, stones with the diameter of 2-4cm are filled from the outer side of the steel pipe, the steel pipe is filled to a natural ground, and the pouring of broken stone and concrete on the inner side of the steel pipe is simultaneously carried out.
The working principle of the invention is as follows: the simple hydraulic verticality adjusting system is adopted, the construction process is simple and quick to operate, and the quality, safety and progress requirements of the construction process are ensured; compared with the airbag method verticality adjusting system and the verticality adjusting system of a verticality adjusting frame (disc) method verticality adjusting system, the verticality adjusting precision and the verticality adjusting speed have great advantages; the construction technology effectively solves the problem of one-column one-pile sagging adjustment construction in the reverse construction method project.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A hydraulic pressure adjusting stand reverse construction method one column one pile construction method based on a hydraulic pressure adjusting table is characterized by comprising the following steps:
s1, hardening the field completely, wherein the field is required to be hardened completely before construction: leveling 300 thick brick slag, pouring a 200 thick C30 concrete surface layer after tamping, and internally matching with a single-layer bidirectional interval of 200mm of HRB 335-grade phi 12 deformed steel bar;
s2, paying off and burying a protective barrel;
s201, leading out pile bit lines from each axis, wherein the allowable deviation is 5mm, marking a pile bit center point by using a shooting nail, drawing a control circle which takes the pile bit center as a circle center and the pile radius as a radius by using red paint, marking a pile number, ejecting cross lines along the axis direction and the vertical axis direction on a hard terrace by using ink lines, cutting out a wire slot by using a cutting machine in the two directions, marking a triangular direction by using red paint, and carrying out self-inspection after the axis and the pile bit lines are placed;
s202, digging a pile casing hole, burying a mouth protection pipe, wherein the cylinder body is kept vertical during burying, the upper mouth is horizontal, and the center of the pile casing is aligned to the center of the pile position by taking the center of a cross-shaped frame as the reference; the protective cylinder is formed by rolling a 3mm steel plate; the pile casing is buried into the original soil for 20cm, the allowable deviation between the central line of the pile casing and the central line of the pile position is less than or equal to 20mm, the pile casing is buried vertically, clay is used for backfilling the periphery of the pile casing to be compact, and the backfilling is required to be symmetrically carried out so as to avoid the pile casing from running;
s203, after the pile casing is buried, checking the pile position in time, and if the error is greater than the standard requirement, burying again;
s3, drilling, namely, pulping slurry by adopting bentonite, wherein the diameter of a drill bit is determined according to design and specification requirements and the condition of trial hole forming, the drilling ensures the verticality of a hole, the depth of the hole is controlled to be 1/300 at more than 35 meters, the hole forming is strictly constructed according to operation regulations, the pressure is reduced and the drilling speed is reduced when the hole is drilled, and the verticality of a drill rod is ensured; the stable condition of the pile frame is closely noticed during drilling, whether the pile casing and the soil body have sinking or not is found, the deflection is immediately lifted, the hole scanning is repeated until the perpendicularity meets the design requirement, and the percentage detection after the hole is formed ensures the perpendicularity of the pile hole;
s4, cleaning holes for the first time, circularly cleaning the pile bottom by using a high-pressure pump through a guide pipe, and strictly controlling the sediment depth to be below 5 cm; firstly, trial pore forming is needed, mud retaining walls with different performances are selected according to pore forming conditions and soil layer conditions, wherein the specific gravity of primary clear returning slurry is less than 1.30, the specific gravity of secondary clear returning slurry is less than or equal to 1.2, the viscosity is controlled to be 18-22 seconds, and the sand content is less than or equal to 5%; in the pore-forming process, the discharged slurry firstly enters a slurry sedimentation tank, a sand remover is adopted in the process, the sand content and specific gravity of the slurry are reduced, and then the slurry enters a circulating tank for use;
s5, machining and installing the reinforcement cage, wherein the reinforcement cage must be manufactured on a platform, and the diameter of the reinforcement cage must be ensured to meet the design and specification requirements; the cage body is ensured not to deform in the transportation process; the steel reinforcement cage body must be straight when manufacturing; the reserved steel bars at the lap joint positions of the upper and lower sections of steel bar cages must meet the design and specification requirements; measuring the elevation dimension before placing the reinforcement cage, determining the length of the hanging bar, and adopting 8 phi 25 reinforcement bars as main reinforcement positions of the upper and lower section cages of the guide cage to align; the reinforcement cage can not be forced to be put down, and the reinforcement cage should be slowly put down when being put down, and the reinforcement cage is put down vertically and centrally to avoid collision with the soil wall; the hanging bars should be firm so as to prevent the steel reinforcement cage from falling; the steel reinforcement cage is internally provided with phi 60 steel pipes as sound measuring pipes according to the requirement, and when the diameter d of the pile is less than 800mm, the number of the sound measuring pipes is not less than 2; when the diameter of the pile is 800< d <160 mm, the number of the piles is not less than 3; when the diameter d of the pile is more than 1600mm, the number of piles is not less than 4; the sounding pipes are symmetrically arranged along the inner side of the reinforcement cage;
s6, adjusting the verticality of the vertical column of the verticality adjusting frame;
s601, adjusting the verticality of a circular tube column, adopting a high-precision inclinometer with a miniature laser transmitter inside on site, finding out the mounting surface of the inclinometer on a steel lattice column tube through the light beam of the laser transmitter, and monitoring the inclination state of the steel lattice column tube in real time by utilizing the output of the inclinometer after the steel lattice column tube is erected; through programming, the inclinometer can be directly connected with a computer or a matched display instrument, the verticality, the inclination angle and the offset of a measured object are intuitively reflected, a base plate provided with an inclination sensor is placed at one end of a lattice column, then a light target is placed at the other end of the lattice column, the bottom surface of the sensor is opposite to the light target, the base plate is vertical to a bus of the lattice column after being fixed, a positioning frame is connected with a hard terrace through an embedded part or an expansion screw, the firm and smooth ground is kept, the height of the positioning frame is 700mm, the length of the positioning frame is correspondingly increased to 800mm above a natural terrace for facilitating correction of a vertical adjusting frame during height processing of a steel pipe column, a pile cap is arranged in the positioning frame, after the top end of the column is clamped by a slide plate, a fastening bolt is fixed with the pile cap, the pile body and the positioning frame are required to be spliced on site for guaranteeing the same horizontal line of the pile cap and the column, after the pile body and the positioning frame are fixed, the pile body is displayed through a measuring device, and the pile body is corrected in eight directions by a jack;
s602, square column sag adjustment, wherein the square column sag adjustment is similar to a column, and another rapid sag adjustment method of a laser sag gauge is adopted on site: before lifting a square column, placing a substrate provided with a laser plumb aligner at one end of a lattice column, then placing a light target at the other end of the lattice column, enabling the bottom surface of a sensor to be opposite to the light target, fixing the substrate to be vertical to a bus of the lattice column, arranging bolt holes in the square column in advance, lifting a vertical column by adopting a 120t crawler crane, fixing the two sides of the vertical column on a vertical adjustment frame by using bolts when the vertical column is lifted in place, and adjusting the position of the square column by using a crowbar until the fixing of the square column and the vertical adjustment frame is completed; the elevation of the square column top is adjusted in a preliminary step, the allowable deviation of the elevation is +/-1 cm, the square column and the vertical adjustment frame are integrally lifted by using a crawler crane after being fixed, the square column is precisely positioned by using a longitudinal and transverse positioning line square column which is placed in advance, after the square column is positioned, the square column is displayed by a plumb gauge bubble, and the square column is corrected in eight directions which are required to be adjusted by using a jack until the plumb gauge bubble is centered and the elevation of the pile top meets the design requirement; every procedure must be strictly controlled layer by layer, if verticality does not meet design requirements, the next procedure is forbidden;
s7, carrying out secondary hole cleaning, namely, after primary hole cleaning, extracting a drill rod, measuring the hole depth, grasping time, placing a reinforcement cage and a concrete conduit, and connecting a circulating pump set through the concrete conduit for carrying out secondary hole cleaning, wherein the purpose is to remove sediment generated when placing the reinforcement cage and the concrete conduit; the hole cleaning is carried out by taking care of supplementing the cleaning slurry to ensure the height of the liquid level of the slurry, and after the secondary hole cleaning is finished, measuring the hole depth and the hole bottom sediment by special persons, and if various indexes of the slurry in the hole do not accord with the design and specification requirements, carrying out hole cleaning again until the slurry is qualified;
s8, adopting commercial concrete for the cast-in-place pile;
s801, before the conduit is put into the hole, the quality of the connecting screw thread and the sealing groove should be carefully checked, the number, the measurement and the length recording are carried out, and the height between the bottom opening of the conduit and the bottom of the hole is controlled to be about 50 cm;
s802, pouring underwater concrete should be carried out within 30min after the second hole cleaning, if the thickness of the bottom mud of the hole is measured again for more than 30min, and if the thickness of the bottom mud of the hole is not in accordance with the requirement, the hole cleaning is carried out again;
s803, underwater concrete pouring should be continuously carried out, the pipe burying depth should be controlled to be 3-10 m, the minimum burying depth should not be less than 2m, the pipe should be lifted and disassembled for service, the length of a lifting pipe at one time should not exceed 6m, the optimal lifting pipe length is 2.5m, the height of a concrete surface should be measured frequently, the lifting pipe length is determined, the pipe can not be lifted above the concrete surface, and the single pile pouring time should not be more than 8 hours;
s804, when the concrete pouring is about 1-2 meters higher than the pile top, starting to fill stones with the diameter of 2-4cm from the outer side of the steel pipe, filling the stones to the natural ground, and simultaneously pouring the broken stone and the concrete on the inner side of the steel pipe;
a hydraulic modulation platform, including organism (1), support base (3) and regulation prop up top (5), fixed welding support base (3) in organism (1) lower surface four corners department, organism (1) inner wall top fixed welding connects horizontal pole (6), connect horizontal pole (6) with organism (1) inner wall fixed welding, install on connecting horizontal pole (6) and adjust prop up top (5), organism (1) upper surface axial equipartition sets up a plurality of screw thread regulation pole (9).
2. Construction method according to claim 1, characterized in that the adjusting roof (5) is slidingly connected with the connecting rail (6).
3. Construction method according to claim 2, characterized in that the right end of the connecting rail (6) is also fixedly provided with a front and rear movable end fixing wing (8).
4. A construction method according to claim 3, characterized in that the threaded adjustment rod (9) is screwed with the machine body (1).
5. The construction method according to claim 4, wherein the upper end of the threaded adjusting rod (9) is fixedly welded with the unidirectional adjusting rod handle (2).
6. The method for one-column-one-pile construction by adopting the reverse construction method of the hydraulic vertical adjusting frame according to claim 1, wherein in the step S8, the designed strength grade of the pile body concrete is underwater C40, the water slump is 180-220mm, and the initial setting time is 6-8 hours.
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| CN110295761B (en) * | 2019-07-03 | 2024-01-19 | 中亿丰建设集团股份有限公司 | Steel upright post sagging adjustment monitoring device and sagging adjustment monitoring method |
| CN111042135A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Novel one-column one-pile verticality adjusting construction method |
| CN111546506A (en) * | 2020-05-18 | 2020-08-18 | 中亿丰建设集团股份有限公司 | Underwater reinforced concrete slab cutting method |
| CN114108624A (en) * | 2021-12-21 | 2022-03-01 | 中建八局第三建设有限公司 | Two-adjustment one-control type perpendicularity control construction method for one-column one-pile steel pipe column |
| CN117702727B (en) * | 2024-02-06 | 2024-06-14 | 江苏筑港建设集团有限公司 | Cast-in-place pile construction technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314070A (en) * | 2014-10-16 | 2015-01-28 | 海南大学 | Shield tunneling construction method for n-shaped underground diaphragm wall |
| WO2018000879A1 (en) * | 2016-06-28 | 2018-01-04 | 广东中科华大工程技术检测有限公司 | Steel pipe prestressed cast-in-place stabilizing sealed pile device |
| KR20180003014U (en) * | 2017-08-14 | 2018-10-19 | 전재운 | In-place foundation using reinforced material and injection, grouting |
| CN209308031U (en) * | 2018-11-23 | 2019-08-27 | 中天建设集团有限公司 | A kind of hydraulic modulation platform |
-
2018
- 2018-11-23 CN CN201811405181.0A patent/CN109610441B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314070A (en) * | 2014-10-16 | 2015-01-28 | 海南大学 | Shield tunneling construction method for n-shaped underground diaphragm wall |
| WO2018000879A1 (en) * | 2016-06-28 | 2018-01-04 | 广东中科华大工程技术检测有限公司 | Steel pipe prestressed cast-in-place stabilizing sealed pile device |
| KR20180003014U (en) * | 2017-08-14 | 2018-10-19 | 전재운 | In-place foundation using reinforced material and injection, grouting |
| CN209308031U (en) * | 2018-11-23 | 2019-08-27 | 中天建设集团有限公司 | A kind of hydraulic modulation platform |
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