CN212335995U - Collimating pile double-pile-casing positioning structure, double-pile-casing device and collimating pile - Google Patents
Collimating pile double-pile-casing positioning structure, double-pile-casing device and collimating pile Download PDFInfo
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- CN212335995U CN212335995U CN202021702102.5U CN202021702102U CN212335995U CN 212335995 U CN212335995 U CN 212335995U CN 202021702102 U CN202021702102 U CN 202021702102U CN 212335995 U CN212335995 U CN 212335995U
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Abstract
The utility model relates to a collimating pile double-protection-tube positioning structure, a double-protection-tube device and a collimating pile, relating to the technical field of construction of a building foundation collimating pile, wherein the collimating pile double-protection-tube positioning structure comprises a plurality of layers of positioning components which are uniformly distributed along the axial direction of an outer protection tube at intervals, each layer of positioning component comprises a plurality of positioning rods which are vertically inserted in through holes arranged on the tube wall of the outer protection tube and adjusting pieces which are connected with the positioning rods and are used for adjusting the depth of the positioning rods inserted in the through holes, the plurality of positioning rods are uniformly distributed along the circumferential direction of the outer protection tube at intervals, one end of each positioning rod is abutted against the outer wall of the inner protection tube, and the other end of each positioning rod; the double pile casing device comprises the positioning structure of the double pile casing of the collimation pile; the collimating pile comprises the double pile casing device. The alignment pile and the double protection cylinders thereof can be improved, the coaxiality and the verticality of the alignment pile and the double protection cylinders are poor, and the stress is not uniform, the coaxiality and the verticality of the inner protection cylinder and the outer protection cylinder can be improved, and the alignment pile is more stable.
Description
Technical Field
The application relates to the technical field of construction of building foundation alignment piles, in particular to an alignment pile double-pile-protection positioning structure, a double-pile-protection device and an alignment pile.
Background
The collimation stake is used for carrying out accurate location to equipment or building, in some projects, in order to satisfy the accurate location to equipment or building, need set up the collimation stake in whole building garden or device building.
At present, the collimating pile generally adopts a structure with double protecting cylinders, and the coaxiality between the inner protecting cylinder and the outer protecting cylinder (the inner protecting cylinder and the outer protecting cylinder) of the collimating pile has great influence on the stress and the stability of the collimating pile. In the prior art, after the inner protective sleeve is sleeved in the outer protective sleeve in the stage of prefabricating the inner protective sleeve and the outer protective sleeve, the support ring is welded between the inner protective sleeve and the outer protective sleeve, and the inner protective sleeve and the outer protective sleeve are directly welded and fixed after the coaxiality of the inner protective sleeve and the outer protective sleeve is adjusted through the support ring, so that the coaxiality of the inner protective sleeve and the outer protective sleeve in the prefabricating stage can not be ensured; in the hoisting process, some pile casings are longer and can reach more than 40 meters, in the hoisting process, the relative positions of the inner pile casing and the outer pile casing can change under the action of gravity in the hoisting process, the coaxiality of other positions can not be controlled only through the support ring, the coaxiality between the inner pile casing and the outer pile casing and the verticality of the inner pile casing and the outer pile casing can not be guaranteed, and therefore the verticality of the whole collimation pile in a pile hole is influenced, the collimation pile is enabled to be stressed unevenly, and the stability is poor.
Aiming at the related technologies, the inventor considers that the coaxiality and the verticality of the existing collimation pile and the double pile casings thereof are poor, the stress is uneven, the stability is poor, and the design and actual requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to improve the alignment stake and two axiality and the straightness relatively poor, the inhomogeneous and relatively poor problem of stability of maintaining a section of thick bamboo of collimation stake, this application provides a two fender section of thick bamboo location structure, two pile casing devices and alignment stake of collimation stake.
The application provides a two pile casings location structure of collimation, adopts following technical scheme:
the utility model provides a two section of thick bamboo location structure that protect of collimation stake for set up in that the collimation stake is equipped with protect between a section of thick bamboo and the outer section of thick bamboo, include a plurality of layers and follow the locating component of the axial interval equipartition of protecting a section of thick bamboo outward, every layer of locating component include that a plurality of pegs graft perpendicularly protect locating lever in the through-hole that is equipped with on the section of thick bamboo wall of a section of thick bamboo outward and with the locating lever is connected and is used for adjusting the locating lever inserts the regulating part of the degree of depth in the through-hole, a plurality of the locating lever is followed the circumference interval equipartition of protecting a section of thick bamboo outward, the one end of locating lever with the outer wall apical grafting of protecting.
By adopting the technical scheme, the inner protective sleeve and the outer protective sleeve are radially positioned by a plurality of layers of positioning assemblies which are uniformly distributed at intervals along the axial direction of the outer protective sleeve, a plurality of positioning rods which are radially positioned along the outer protective sleeve are arranged in each layer of positioning assembly, the positioning rods are inserted in through holes of the outer protective sleeve, the end parts of the positioning rods are abutted with the outer wall of the inner protective sleeve, the length of the positioning rods extending out of the outer protective sleeve is adjusted through an adjusting piece, the positions of the positioning rods are locked, the position of the inner protective sleeve relative to the outer protective sleeve in the radial direction is adjusted, and the positioning rods are cooperatively matched to ensure the coaxiality and the verticality of the inner protective sleeve and the outer protective sleeve, so that the coaxiality of the inner protective sleeve and the outer protective sleeve; in the hoisting process of the pile casing, the jacking force of the positioning rods on the inner pile casing always exists, and the positioning rods are uniformly distributed at intervals along the axial direction of the pile casing, so that the jacking force of the positioning rods on the inner pile casing is ensured, the inner pile casing and the outer pile casing are relatively fixed in the radial direction, and the coaxiality and the verticality of the inner pile casing and the outer pile casing are ensured not to change.
Preferably, the number of the positioning rods in each layer of the positioning assembly is 3-6.
Through adopting above-mentioned technical scheme, coordinate the adjustment between the locating lever, can improve the precision of adjustment and location to the locating lever can provide sufficient top joint power to protecting a section of thick bamboo internally, guarantees that the relative position of protecting a section of thick bamboo and outer protecting section of thick bamboo does not change in the interior, guarantees to protect a section of thick bamboo in, and the axiality between the section of thick bamboo and the outer protecting section of thick bamboo.
Preferably, the adjusting piece is a nut fixed in the through hole, an external thread is arranged on a rod body of the positioning rod, and the positioning rod is connected with the adjusting piece through a thread.
Through adopting above-mentioned technical scheme, when protecting a section of thick bamboo outward in the preparation, the position that sets for on the section of thick bamboo wall of protecting a section of thick bamboo outward bores the system through-hole, and with the nut welding in the through-hole, twist the locating lever and connect and pass the nut, make the tip top of locating lever connect including protecting on the outer wall of a section of thick bamboo, through the position of adjustment locating lever for the nut, the relative position of protecting a section of thick bamboo and protecting a section of thick bamboo outward in the adjustment, it is convenient to adjust, after adjusting the axiality of protecting a section of thick bamboo and protecting a section of thick bamboo outward in the interior, the locating lever is locked in the nut, the tip top all the time of locating lever is connected including protecting a section of thick bamboo, the.
Preferably, a handle is arranged at the end part of the rod body of the positioning rod, which extends out of the outer protective cylinder.
Through adopting above-mentioned technical scheme, set up the handle and mainly make things convenient for when twist-on locating lever operating personnel conveniently to grip, twist and connect more convenient, laborsaving and swift.
Preferably, the handle includes that a plurality of is followed the cylinder of circumference interval equipartition of locating lever, the cylinder with the circumference of locating lever is perpendicular and follows the radial of locating lever.
By adopting the technical scheme, the handle adopts the column body which is vertically fixed with the axial direction of the positioning rod, when the positioning rod is screwed, only the column body needs to be held, the force is applied along the circumferential direction of the positioning rod, the operation is time-saving and labor-saving, the number of the column bodies is preferably 2-6, a plurality of held column bodies are arranged, and the use is more convenient.
Preferably, the distance between adjacent positioning components is 1000mm-2000 mm.
Through adopting above-mentioned technical scheme, when protecting a section of thick bamboo and protecting a section of thick bamboo outward in the equipment, protect a set of locating component of axial every 1500mm of a section of thick bamboo outward for protect a section of thick bamboo and protect a section of thick bamboo equipment outward including, constantly adjust the axiality between the section of thick bamboo that protects inside and outside, the multiunit locating component carries out the butt application of force to protecting a section of thick bamboo internally, has guaranteed the axiality and has protected a section of thick bamboo and the straightness that hangs down of protecting a section of thick bamboo and protecting a section of thick bamboo in the stake.
In a second aspect, the present application provides a two pile casings of collimation device, adopts following technical scheme:
a two pile casings of device of collimation, including outer pile casing, set up in protect a section of thick bamboo inside outer and be located protect a section of thick bamboo outer with in protect between the section of thick bamboo as above-mentioned arbitrary one two pile casings of collimation location structure and respectively fixed connection protect a section of thick bamboo outer with in protect the mounting of a section of thick bamboo.
Through adopting above-mentioned technical scheme, set up two a section of thick bamboo location structure that protect of collimation stake, make outer a section of thick bamboo and the interior protective barrel keep certain axiality, and protect a section of thick bamboo and outer protective barrel further fixed together in with through the mounting, guaranteed that hoist and mount in-process protect a section of thick bamboo and an outer relative position who protects a section of thick bamboo unchangeable, this two a section of thick bamboo devices that protect of collimation stake have improved interior protective barrel and the outer protective barrel axiality and hang down straightness of collimation stake low, lead to the slope of collimation stake, the location is inaccurate, the unstable problem of structure can reach and improve interior protective barrel and outer protective barrel axiality and hang down straightness, guarantee the straightness that hangs down of collimation stake, make the more stable technological effect of collimation stake.
Preferably, the top ends of the outer casing and the inner casing are fixedly provided with hoisting brackets; and a lifting lug is arranged on the surface of the outer wall of the upper part of the outer casing.
Through adopting above-mentioned technical scheme, hoisting support can conveniently carry out integral hoisting to two protecting a section of thick bamboo devices, and at the in-process of the income stake hole of hoist and mount, the position of hoisting point moves down to the position of lug, makes the atress of two protecting a section of thick bamboo of hoist and mount process more even, makes things convenient for the hoist and mount operation.
In a third aspect, the present application provides a collimating pile, which adopts the following technical scheme:
the collimating pile is prepared by adopting the collimating pile double-pile-casing device, and comprises an outer pile casing positioned in a pile hole, an inner pile casing coaxially arranged in the outer pile casing and a reinforcement cage arranged in the middle of the inner pile casing, wherein the pile hole comprises a first pile hole positioned at the upper part and a second pile hole positioned at the lower part of the first pile hole and concentrically arranged with the first pile hole, and the diameter of the first pile hole is larger than that of the second pile hole; the outer pile casing and the inner pile casing are located in the first pile hole, the steel reinforcement cage penetrates through the first pile hole and the second pile hole, and the inner pile casing is connected with the steel reinforcement cage through concrete.
By adopting the technical scheme, the two concentric pile holes are respectively the first pile hole and the second pile hole, the bottoms of the prefabricated outer pile casing and the prefabricated inner pile casing are abutted against the shoulder of the connecting part of the first pile hole and the second pile hole, so that the bottoms of the outer pile casing and the inner pile casing are uniformly stressed, the verticality and the coaxiality of the outer pile casing and the inner pile casing are more easily ensured, and the inner pile casing and the outer pile casing are not easily deformed in the process of installing the inner pile casing and the outer pile casing; protect the inside of a section of thick bamboo including steel reinforcement cage sets up with one heart, through inwards protecting a section of thick bamboo internal pouring concrete, make steel reinforcement cage and interior guard cylinder shape structure as an organic whole, the structure is more reliable and more stable.
Preferably, the steel reinforcement cage includes that the outside is spiral helicine spiral hoop and a plurality of stiffening hoop that is the ring form of level, and the stiffening hoop is followed the axial interval of spiral hoop sets up, and the stiffening hoop encircles and fixes the outside at spiral hoop.
Through adopting above-mentioned technical scheme, what make steel reinforcement cage and concrete be connected is firm more reliable.
To sum up, the application comprises the following beneficial technical effects:
this application has improved the axiality of collimation stake and two casings and has hung down the relatively poor, the inhomogeneous and relatively poor problem of stability of atress, can reach and protect a casing axiality and hang down the straightness in improving, guarantees the straightness that hangs down of collimation stake, makes the more stable technological effect of collimation stake.
Drawings
Fig. 1 is a schematic structural diagram of a double casing positioning structure and a double casing device of a collimation pile provided by an embodiment of the application;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a schematic view of the handle of FIG. 1;
fig. 4 is a schematic structural diagram of a collimating pile provided in an embodiment of the present application.
In the figure: 1. an outer protective cylinder; 2. an inner protective cylinder; 3. a positioning assembly; 31. positioning a rod; 32. an adjustment member; 33. a handle; 4. a reinforcement cage; 41. a spiral hoop; 42. a stiffening hoop; 5. a second pile hole; 6. a first pile hole; 7. pouring a cover body; 8. a sealing cover; 9. a fixing member; 10. hoisting a support; 11. lifting lugs; 12. a wall-protecting cylinder.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application firstly discloses a positioning structure of a double protection barrel of a collimating pile, please refer to fig. 1 and fig. 2, the positioning structure of the double protection barrel of the collimating pile is used for being arranged between an inner protection barrel 2 and an outer protection barrel 1 which are arranged on the collimating pile, and comprises a plurality of layers of positioning components 3 which are uniformly distributed at intervals along the axial direction of the outer protection barrel 1, each layer of positioning component 3 comprises a plurality of positioning rods 31 which are vertically inserted into through holes arranged on the barrel wall of the outer protection barrel 1 and adjusting pieces 32 which are connected with the positioning rods 31 and are used for adjusting the depth of the positioning rods 31 inserted into the through holes, each positioning rod 31 is a cylindrical rod body, a plurality of through holes are arranged on the barrel wall of the outer protection barrel 1, a plurality of through holes are arranged along the circumferential direction of the outer protection barrel 1, the axes of the through holes are arranged along the radial direction of the outer protection barrel 1, a plurality of the positioning rods 31 are uniformly distributed at intervals along the circumferential direction of the outer protection, the other end of the positioning rod 31 extends out of the outer wall of the outer casing 1.
In the construction of the collimating pile, the requirement on the coaxiality and the verticality of the inner protecting cylinder 2 and the outer protecting cylinder 1 is high, in the embodiment, a plurality of layers of positioning assemblies 3 which are uniformly distributed at intervals along the axial direction of the outer protecting cylinder 1 are adopted to radially position the inner protecting cylinder 2 and the outer protecting cylinder 1, a plurality of positioning rods 31 which are radially arranged along the outer protecting cylinder 1 are arranged in each layer of positioning assembly 3, the positioning rods 31 are inserted in through holes of the outer protecting cylinder 1, the end parts of the positioning rods 31 are abutted to the outer wall of the inner protecting cylinder 2, the length of the positioning rods 31 extending out of the outer protecting cylinder 1 is adjusted through adjusting pieces 32, the position of the inner protecting cylinder 2 relative to the outer protecting cylinder 1 in the radial direction is further adjusted, and the positioning rods 31 are cooperatively matched to ensure the coaxiality and the verticality of the inner protecting cylinder 2 and the outer protecting cylinder 1, so that the coax; in the hoisting process of the casing, because the jacking force of the positioning rods 31 on the inner casing 2 exists all the time, and the positioning rods 31 are uniformly distributed at intervals along the axial direction of the inner casing 2, the jacking force of the positioning rods 31 on the inner casing 2 is ensured, the inner casing 2 and the outer casing 1 are relatively fixed in the radial direction, and the coaxiality and the verticality of the inner casing 2 and the outer casing 1 are ensured not to change.
The embodiment has improved the interior protective casing 2 of collimation stake and 1 axiality of outer protective casing and hang down straightness lowly, lead to the slope of collimation stake, fix a position inaccurate, the unstable problem of structure can reach and protect a 2 and 1 axiality of outer protective casing and hang down straightness in improving, guarantees the straightness that hangs down of collimation stake, makes the more stable technological effect of collimation stake.
Referring to fig. 2, as a specific embodiment of the alignment pile double casing positioning structure provided in the present application, the number of positioning rods 31 in each layer of positioning assembly 3 is 3-6, preferably 4 or 6.
In this embodiment, six positioning rods 31 are adopted in each positioning assembly 3, and the six positioning rods 31 are adjusted in a coordinated manner, so that the adjustment and positioning accuracy can be improved, the positioning rods 31 can provide sufficient jacking force for the inner protection tube 2, the relative positions of the inner protection tube 2 and the outer protection tube 1 are not changed, and the coaxiality between the inner protection tube 2 and the outer protection tube 1 is ensured.
Referring to fig. 1 and fig. 2, as a specific embodiment of the alignment pile double-casing positioning structure provided in the present application, the adjusting member 32 is a nut fixed in the through hole, an external thread is provided on a rod body of the positioning rod 31, and the positioning rod 31 is connected with the adjusting member 32 through a thread.
In this embodiment, when the outer casing 1 is manufactured, a through hole is drilled at a position set on the wall of the outer casing 1, a nut is welded in the through hole, the positioning rod 31 is screwed to penetrate through the nut, the end of the positioning rod 31 is abutted to the outer wall of the inner casing 2, the relative position of the inner casing 2 and the outer casing 1 is adjusted by adjusting the position of the positioning rod 31 relative to the nut, the adjustment is convenient, after the coaxiality of the inner casing 2 and the outer casing 1 is adjusted, the positioning rod 31 is locked in the nut, the end of the positioning rod 31 is always abutted to the inner casing 2, and the inner casing 2 and the outer casing 1 are not moved relatively in the radial direction in the standing and hoisting process.
Referring to fig. 3, as a specific embodiment of the alignment pile double-casing positioning structure provided in the present application, a handle 33 is disposed at an end of the positioning rod 31 extending out of the outer casing 1.
In this embodiment, the handle 33 is provided to facilitate the convenient holding of the operator when screwing the positioning rod 31, and the screwing is more convenient, labor-saving and fast.
Referring to fig. 3, as a specific embodiment of the alignment pile double-casing positioning structure provided in the present application, the handle 33 includes a plurality of columns uniformly distributed at intervals along the circumferential direction of the positioning rod 31, and the columns are perpendicular to the circumferential direction of the positioning rod 31 and along the radial direction of the positioning rod 31.
In this embodiment, the handle 33 is a column fixed perpendicular to the axial direction of the positioning rod 31, and when the positioning rod 31 is screwed, only the column needs to be held and the force is applied along the circumferential direction of the positioning rod 31, so that the operation is time-saving and labor-saving, the number of the columns is preferably 2-6, and a plurality of the held columns are arranged, so that the use is more convenient.
As a specific embodiment of the alignment pile double-casing positioning structure provided by the present application, the distance between adjacent positioning assemblies 3 is 1000mm to 2000mm, preferably 1500 mm.
In this embodiment, when the inner casing 2 and the outer casing 1 are assembled, a set of positioning assemblies 3 are installed every 1500mm along the axial direction of the outer casing 1, so that the coaxiality between the inner and outer casings 1 is continuously adjusted in the process of assembling the inner casing 2 and the outer casing 1, and the inner casing 2 is abutted by the sets of positioning assemblies 3 to apply force, thereby ensuring the coaxiality and the perpendicularity of the inner casing 2 and the outer casing 1 in a pile hole.
The application also discloses a two section of thick bamboo devices that protect of collimation stake, including protecting a section of thick bamboo 1 outward, set up in protecting a section of thick bamboo 2 in an outer section of thick bamboo 1 inside, be located protect a section of thick bamboo 1 outward and protect between a section of thick bamboo 2 arbitrary as above-mentioned the two section of thick bamboo location structure that protect of collimation stake and respectively fixed connection protect a section of thick bamboo 1 outward and protect a mounting 9 of a section of thick bamboo 2 in, mounting 9 is the annular plate of circle, is equipped with two, welds respectively and protects a section of thick bamboo 1 and the top of protecting a section of thick bamboo 2 outward for it is together fixed to protect a section of thick bamboo 1 outward and protect.
The utility model provides a two pile casings of collimation device, through setting up two pile casings of collimation location structure, make outer pile casing 1 and interior casing 2 keep certain axiality, and through mounting 9 will protect a section of thick bamboo and outer casing further fixed together in with, guaranteed that hoist and mount in-process the relative position of interior casing 2 and outer casing 1 is unchangeable, this two pile casings of collimation device has improved the interior casing 2 and the outer casing 1 axiality and the straightness that hangs down of collimation pile and has hanged down, lead to the slope of collimation pile, the location is inaccurate, the unstable problem of structure, can reach and improve interior casing 2 and the outer casing 1 axiality and the straightness that hangs down, guarantee the straightness of collimation pile, make the more stable technological effect of collimation pile.
Referring to fig. 1, as a specific embodiment of a positioning structure of a double pile casing of an alignment pile provided by the present application, a hoisting bracket 10 is fixedly disposed at the top ends of an outer pile casing 1 and an inner pile casing 2; the outer wall surface of the upper part of the outer casing 1 is provided with a lifting lug 11.
Hoisting support 10 can conveniently carry out integral hoisting to two protecting a section of thick bamboo devices in this embodiment, and at the in-process of the income stake hole of hoist and mount, the position of hoisting point moves down to the position of lug 11, makes the atress of two protecting a section of thick bamboo of hoist and mount process more even, makes things convenient for the hoist and mount operation.
The application also discloses a collimating pile, which is prepared by adopting the collimating pile double-pile-casing device in any one of the above items, and comprises an outer protective casing 1 positioned in a pile hole, an inner protective casing 2 coaxially arranged in the outer protective casing 1 and a reinforcement cage 4 arranged in the middle of the inner protective casing 2, wherein the top of the reinforcement cage 4 is provided with a pouring cover body 7, the upper port of the outer protective casing 1 is provided with a sealing cover 8, the pile hole comprises a first pile hole 6 positioned at the upper part and a second pile hole 5 positioned at the lower part of the first pile hole 6 and concentrically arranged with the first pile hole 6, and the diameter of the first pile hole 6 is larger than that of the second pile hole 5; the outer pile casing 1 and the inner pile casing 2 are positioned in a first pile hole 6, a reinforcement cage 4 penetrates through the first pile hole 6 and a second pile hole 5, the inner pile casing 2 is connected with the reinforcement cage 4 through concrete, the reinforcement cage 4 comprises a spiral hoop 41 with a spiral outer part and a plurality of stiffening hoops 42 in a horizontal ring shape, the stiffening hoops 42 are arranged at intervals along the axial direction of the spiral hoop, and the stiffening hoops 42 are fixed on the outer part of the spiral hoop in a surrounding manner; the pouring cover body 7 comprises a pouring top plate, a pouring top plate protective cover arranged on the upper part of the pouring top plate and a plurality of anchor bars vertically fixed on the lower part of the pouring top plate; the pouring top plate protective cover is fixedly connected with the pouring top plate through bolts; the outer surface of the upper part of the anchor bar is provided with an external thread, and the anchor bar and the pouring top plate are fixed through nuts.
In the embodiment, two concentric pile holes are arranged, namely a first pile hole 6 and a second pile hole 5, the bottoms of the prefabricated outer pile casing 1 and the prefabricated inner pile casing 2 are abutted against a shoulder of a connecting part of the first pile hole 6 and the second pile hole 5, so that the bottoms of the outer pile casing 1 and the inner pile casing 2 are uniformly stressed, the verticality and the coaxiality of the outer pile casing 1 and the inner pile casing 2 are more easily ensured, and the inner pile casing 2 and the outer pile casing 1 are not easily deformed in the process of installing the inner pile casing 2 and the outer pile casing 1; protect the inside of a section of thick bamboo 2 including steel reinforcement cage 4 sets up with one heart, protect a section of thick bamboo 2 internal concreting through inwards, make steel reinforcement cage 4 and interior protect a section of thick bamboo 2 and form a body structure, the structure is more reliable and more stable.
The problem that the collimation pile is uneven in stress and prone to deformation is solved, and the technical effect of improving firmness and stability of the collimation pile can be achieved.
The construction method of the collimation pile adopts the collimation pile, and comprises the following steps:
step 3, mounting a protective cylinder: the inner protection barrel 2 and the outer protection barrel 1 are lowered to the first pile hole 6 by a crane connecting fixing piece 9 and a hoisting bracket 10; after the inner pile casing 2 and the outer pile casing 1 are vertically fixed, 1.0 m of C15 plain concrete is poured at the bottom of the pile in advance for sealing the bottom, after the bottom sealing concrete is finally set, the contact part of the outer side of the outer pile casing 1 and a rock-soil body is grouted, and the positions of the inner pile casing 2 and the outer pile casing 1 are fixed;
step 4, drilling a second pile hole 5: drilling a second pile hole 5 by a drilling machine;
Specifically, before the step 1, hoisting preparation needs to be carried out, and firstly, construction machinery and personnel are organized to enter a field according to the construction date required by an owner; the connection work of approaching water and electricity is well done; carrying out field leveling, carrying out field leveling according to the elevation provided by the design file, and preparing for subsequent construction; arranging a double-protection-cylinder processing field; then, a construction stage of measurement setting and alignment of piles is carried out, on the basis of a tee joint on the site, according to the data of a building measurement control net and a plane arrangement diagram of the alignment piles, a grid control net and an elevation datum point of a pile position axis are measured, a pile position center is determined, the circumference of the upper part (namely a first section) is drawn by taking the midpoint as a circular point, the radius of a pile body and the thickness of a retaining wall as the radius, lime lines are scattered as a pile hole excavation dimension line, and four pile central axis control points are led out of a pile hole along the center position of the pile.
In step 3, the protective cylinder is installed by adopting an integral hoisting and one-time hole entering method; the engineering collimation pile (bedrock pile) is positioned in the storage ring tunnel, a construction site is reserved for 35 multiplied by 25 meters, the requirement of a hoisting site can be met, and in the hoisting process of the double pile casings, no obstacle exists in the turning radius of the crane, and the crane can safely hoist. The construction site of the engineering collimation pile is not excavated and is original soil, and the soil is a sandy gravel layer. According to the geological survey report, the bearing capacity of the soil of the layer is 350 kPa. The calculated field can meet the requirements of large-scale equipment such as a rotary drilling rig, a 350t truck crane and the like on walking and construction safety. The crane can be directly supported in the range of 14 meters of the hole opening, and the double protection cylinders can be directly placed to the pile hole after being vertical. And pre-practicing is carried out according to the crane station position, the pile hole position and the double pile casing position in the hoisting plane layout drawing before the crane enters the field construction. If the hoisting requirement is not met, the site is leveled and the double protection cylinders are shifted. The double pile casings and the pile positions are ensured to be positioned in the hoisting radius of the crane, and the smooth hoisting of the double pile casings is ensured.
Specifically, the collimating pile adopts a 40-meter double-pile casing design, and a 350-ton truck crane is adopted to hoist the double pile casings; the length of the double protection cylinders is 40m, and 2-point hoisting is adopted; the first stage is as follows: the hoisting point is arranged 11 meters below the top, and the double pile casings are hoisted and are conveyed into the pile hole by 28 meters to be used in the hoisting process; and a second stage: and (4) carrying out lifting point replacement treatment, and lifting the lifting points to the position (the position 350mm below the top) of the reserved bracket in the existing assembling process until the double protection cylinders are placed at the preset position.
It is to be noted that the double pile casings must be slowly put down when being lifted into the hole, and quick throwing is forbidden to prevent the double pile casings from deforming or causing pile hole collapse; the 350-ton truck crane has to make the double protective sleeves in a vertical state in the process of lifting the double protective sleeve manhole.
The hoisting construction steps of the double protection cylinders (the inner protection cylinder 2 and the outer protection cylinder 1) are as follows:
(1) before hoisting, preparing various preparations in advance, and commanding the crane to transfer to a hoisting position;
(2) after the installation condition and the stress gravity center of a steel wire rope of the crane are checked, the crane starts to lift, and the tightness condition and the welding condition of a lifting lug of the steel wire rope are checked;
(3) in the hoisting process of a 350-ton truck crane, a hoisting point is positioned 11 meters below the top of the double protective cylinder, a main arm with the length of 50.5 meters is selected, the gyration radius is 22 meters, and the maximum hoisting capacity is 39.2 tons; considering that the bottom of the double sleeve slowly hooks the rotating arm without leaving the ground in the process of lifting the rotating arm, the actual lifting capacity only needs to consider half of the weight of the component, namely 24.59 tons, and then considers the safety factor of 10%, and the lifting capacity is considered according to 24.59 tons multiplied by 1.1=27.05 tons, thereby meeting the lifting requirement in the lifting process;
(4) after the double pile casings are vertical, pulling a traction rope on the pile casings for control, so that the double pile casings rotate to the pile hole position from the lifting position;
(5) commanding the crane to enter the hole and position, enabling the crane to rotate stably, and pulling a traction rope on the protective cylinder for control; when the protective sleeve is clamped in the hole during the lowering, the protective sleeve is lifted out to check the hole position condition and then lifted again, and the hole cannot be forced to be inserted; the double protection cylinders are under the action of buoyancy in the process of placing the double protection cylinders into the slurry, and the buoyancy is increased (0 to 34.1 tons) according to different placing depths, so that the lifting capacity of the truck crane in the process of placing is reduced, and the hoisting requirement is met;
(6) when the double protection cylinders are installed, instruments such as a theodolite are used for monitoring the verticality in real time; after the double protection cylinders are installed, the perpendicularity of the double protection cylinders is retested, and the perpendicularity is guaranteed by using a perpendicularity adjusting instrument to perform accurate fine adjustment;
(7) in the step 3, in the process of hoisting the inner protective cylinder 2 and the outer protective cylinder 1 into the pile hole and lowering the inner protective cylinder, when each layer of positioning structure is close to the upper part of the pile hole, the lowering is suspended, the positioning structure on the layer is disassembled, namely the positioning rod 31 and the second nut 32 are disassembled, and the anti-corrosion treatment is carried out after the hole plugging is welded;
(8) when two protect a section of thick bamboo and go down the drill way position, with I-shaped steel with outer protecting a section of thick bamboo 1 support in the drill way, survey this moment outer protecting a section of thick bamboo 1 top elevation with the level gauge, in time adjust outer protecting a section of thick bamboo 1 elevation, ensure outer protecting a section of thick bamboo 1 position, highly accurate.
The construction method of the collimation pile can ensure the coaxiality and the verticality of the inner protection barrel 2 and the outer protection barrel 1 in the lowering process, is stable in stress, can avoid deformation of the inner protection barrel 2 and the outer protection barrel 1, and is firm and reliable in connection and accurate in positioning.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A two pile casings location structure of collimation, its characterized in that: the device is used for being arranged between an inner protective barrel (2) and an outer protective barrel (1) which are arranged on a collimating pile, and comprises a plurality of layers of positioning components (3) which are uniformly distributed at axial intervals and are arranged on the outer protective barrel (1), each layer of positioning component (3) comprises a plurality of positioning rods (31) which are vertically inserted into through holes formed in the barrel wall of the outer protective barrel (1) and adjusting pieces (32) which are connected with the positioning rods (31) and used for adjusting the depth of the positioning rods (31) inserted into the through holes, the plurality of positioning rods (31) are uniformly distributed at circumferential intervals and are arranged on the outer protective barrel (1), one end of each positioning rod (31) is abutted to the outer wall of the inner protective barrel (2), and the other end of each positioning rod (31) extends out of the outer protective barrel (1).
2. The alignment pile double-casing positioning structure according to claim 1, wherein: the number of the positioning rods (31) in each layer of the positioning assembly (3) is 3-6.
3. The alignment pile double-casing positioning structure according to claim 2, wherein: the adjusting piece (32) is a nut fixed in the through hole, an external thread is arranged on a rod body of the positioning rod (31), and the positioning rod (31) is connected with the adjusting piece (32) through a thread.
4. The double-casing positioning structure for the collimation pile as recited in claim 3, wherein: a handle (33) is arranged at the end part of the rod body of the positioning rod (31) extending out of the outer protective cylinder (1).
5. The double-casing positioning structure for the collimation pile as recited in claim 4, wherein: the handle (33) comprises a plurality of columns which are uniformly distributed along the circumferential direction of the positioning rod (31) at intervals, and the columns are perpendicular to the circumferential direction of the positioning rod (31) and along the radial direction of the positioning rod (31).
6. The alignment pile double-casing positioning structure according to claim 1, wherein: the distance between the adjacent positioning components (3) is 1000mm-2000 mm.
7. A two pile casings devices of collimation, its characterized in that: the double-pile-protection positioning structure comprises an outer pile casing (1), an inner pile casing (2) arranged inside the outer pile casing (1), the double-pile-protection positioning structure of the collimation pile, which is positioned between the outer pile casing (1) and the inner pile casing (2), and fixing pieces (9) fixedly connected with the outer pile casing (1) and the inner pile casing (2) respectively.
8. The double casing device of the collimating pile of claim 7, wherein: the top ends of the outer protective cylinder (1) and the inner protective cylinder (2) are fixedly provided with hoisting brackets (10); the outer wall surface of the upper part of the outer casing (1) is provided with a lifting lug (11).
9. Collimation stake, its characterized in that: the double pile casing device of any one of claims 7 to 8, comprising an outer casing positioned in a pile hole and an inner casing coaxially arranged in the outer casing and a reinforcement cage (4) arranged in the middle of the inner casing (2), wherein the pile hole comprises a first pile hole (6) positioned at the upper part and a second pile hole (5) positioned at the lower part of the first pile hole (6) and concentrically arranged with the first pile hole (6), and the diameter of the first pile hole (6) is larger than that of the second pile hole (5); the outer pile casing (1) and the inner pile casing (2) are located in the first pile hole (6), the reinforcement cage (4) penetrates through the first pile hole (6) and the second pile hole (5), and the inner pile casing (2) and the reinforcement cage (4) are connected through concrete.
10. The alignment post of claim 9, wherein: reinforcing cage (4) are spiral hoop (41) and a plurality of stiffening hoop (42) that are the ring form of level including the outside, and stiffening hoop (42) are followed the axial interval of spiral hoop (41) sets up, and stiffening hoop (42) encircle to fix the outside at spiral hoop (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021702102.5U CN212335995U (en) | 2020-08-14 | 2020-08-14 | Collimating pile double-pile-casing positioning structure, double-pile-casing device and collimating pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021702102.5U CN212335995U (en) | 2020-08-14 | 2020-08-14 | Collimating pile double-pile-casing positioning structure, double-pile-casing device and collimating pile |
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| CN212335995U true CN212335995U (en) | 2021-01-12 |
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| CN202021702102.5U Expired - Fee Related CN212335995U (en) | 2020-08-14 | 2020-08-14 | Collimating pile double-pile-casing positioning structure, double-pile-casing device and collimating pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529714A (en) * | 2021-07-17 | 2021-10-22 | 南京桥新建设有限公司 | Construction method for replacing old pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529714A (en) * | 2021-07-17 | 2021-10-22 | 南京桥新建设有限公司 | Construction method for replacing old pile |
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Granted publication date: 20210112 Termination date: 20210814 |