CN110863495A - Steel pipe column inserting accurate positioning structure and accurate positioning construction method - Google Patents
Steel pipe column inserting accurate positioning structure and accurate positioning construction method Download PDFInfo
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- CN110863495A CN110863495A CN201911351052.2A CN201911351052A CN110863495A CN 110863495 A CN110863495 A CN 110863495A CN 201911351052 A CN201911351052 A CN 201911351052A CN 110863495 A CN110863495 A CN 110863495A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention belongs to the technical field of deep foundation pit construction, and discloses a steel pipe column insertion accurate positioning structure which comprises a steel pipe column, wherein the outer side of the steel pipe column is connected with a tool joint; the device also comprises a preset hole, a protective cylinder arranged in the preset hole and a positioning platform; one end of the protective cylinder is exposed out of the ground; the positioning platform is positioned above the hole opening of the preset hole and is connected with the ground through deformed steel bars, and the positioning platform is provided with a positioning pin for limiting the steel pipe column; inserting the steel pipe column into the pile casing; both sides of one end of the protective cylinder, which is exposed out of the ground, are provided with profile steels, and channel steels are vertically arranged on the profile steels; the bottom end of the steel pipe column is fixed with the hole bottom plane through a fixing piece. The invention can directly measure the verticality and the central position of the steel pipe column in the whole construction process on the basis of saving the investment cost, correct the verticality and the central position in time when the verticality and the central position are cheap, and avoid the accumulation of errors and the uncontrollable property that the steel pipe column is not tightly contacted with a positioner in the traditional process. The invention also discloses a construction method for carrying out accurate positioning by using the structure.
Description
Technical Field
The invention belongs to the technical field of deep foundation pit construction, and particularly relates to a steel pipe column inserting accurate positioning structure and an accurate positioning construction method.
Background
With the rapid development of Chinese economy and the acceleration of urbanization process, city construction enters a big development period, the construction enthusiasm of each place is gradually increased, but increasingly luxurious cities create conditions for construction and leave less time for construction, and the construction difficulty is more and more large. The above phenomena are mainly reflected in: large engineering scale, multiple foundation pit groups, large foundation pit area and deep depth. The known cover-excavation reverse construction method is that an enclosure structure and a middle pile column of a foundation pit are firstly made downwards on the ground surface, the enclosure structure of the foundation pit mostly adopts underground continuous walls or curtain piles, and middle supports mostly utilize the middle pile column of a main body structure so as to reduce the construction cost. Then, excavating a surface soil body to the ground elevation of the main structure top plate, and pouring the top plate by using the unearthed soil body as a soil mold; the rest of the lower works are constructed under the closed roof. Because the cover-excavation construction method has the advantages of small influence on city citizen construction, deep construction and high construction safety factor of large foundation pits, the cover-excavation construction method is favored by more scholars. One pile and one column have the effect of lifting the weight in a cover-excavation method supporting system, and the construction precision of the pile and the column not only influences the safety during the construction of the cover-excavation method, but also influences the construction of the later internal structure.
At present, domestic steel pipe column positioning is a more mature process with the most construction and application. But the underground excavation of urban subway stations and the positioning construction of the deep foundation pit steel pipe column are complicated. With the increase of the urbanization process, subways, municipalities and the like are more and more concentrated in urban areas, the lower pipelines are complex, and the projects are more and more complex. This requires that the steel pipe columns be positioned accurately so as not to damage the underground pipeline.
Disclosure of Invention
In order to solve the problems, the invention discloses a steel pipe column insertion accurate positioning structure which can directly measure the perpendicularity and the central position of a steel pipe column in the whole construction process on the basis of saving the investment cost, correct the perpendicularity and the central position in time after the perpendicularity and the central position are cheap, and avoid the accumulation of errors and the uncontrollable property that the steel pipe column is not tightly contacted with a positioner in the traditional process. The specific technical scheme of the invention is as follows:
the steel pipe column insertion accurate positioning structure comprises a steel pipe column, wherein the outer side of the steel pipe column is connected with a tool joint; the device also comprises a preset hole, a protective cylinder arranged in the preset hole and a positioning platform; one end of the pile casing is exposed out of the ground; the positioning platform is positioned above the hole opening of the preset hole and is connected with the ground through deformed steel bars, and the positioning platform is provided with a positioning pin for limiting the steel pipe column; the steel pipe column is inserted into the pile casing; profile steels are arranged on two sides of one end, exposed out of the ground, of the protective cylinder, and channel steel is vertically arranged on the profile steels; the bottom end of the steel pipe column is fixed with the hole bottom plane through a fixing piece.
Has the advantages that: before the positioning platform is installed, a bored pile reinforcement cage needs to be installed in a preset hole, and concrete is poured to a required elevation; when the positioning platform is arranged, a worker adjusts the central position and the horizontal position of the positioning platform by using a total station and a jack to determine the hole falling position of the steel pipe column, and when the steel pipe column is away from one end of a concrete surface, the total station is used for positioning the central position of the steel pipe column to determine the initial position of the steel pipe column; then, the alignment of the steel pipe column can be completed by using a positioning pin, the aligned steel pipe column falls to the ground and is fixed with the concrete plane through a fixing piece, and the surface verticality is kept; in the process, the positioning and the alignment of a plurality of steel pipe columns are not needed any more by external force only by ensuring the position of the positioning platform.
Preferably, the positioning platform comprises a base, a bracket, a cross brace for stabilizing the bracket and an adjustable cross bar; the base is connected with the ground through the deformed steel bar; one end of the bracket is connected with the base; the bracket is provided with a track cross rod with a sliding chute; the adjustable cross rod is connected with the track cross rod in a sliding manner; the positioning pin is arranged on the adjustable cross rod.
Has the advantages that: the positioning platform is provided with an adjustable cross rod, and the adjustable cross rod is provided with a positioning pin; generally speaking, the support sets up two adjustable horizontal poles, and adjustable horizontal pole sets up two locating pins, and generally speaking, on same horizontal plane, can fix a position the one end of steel-pipe column through four locating pins.
Preferably, the upper end and the lower section of the support are both provided with a track cross rod and an adjustable cross rod which is connected with the track cross rod in a sliding manner.
Has the advantages that: the steel pipe column is positioned by mounting through a two-point positioning method; one point is on the earth surface, and the other point is in a preset hole; positioning the top elevation of the steel pipe column and the ground position by the earth surface point by using a positioning platform; the preset hole points are fixed with the concrete plane by utilizing fixing pieces; when the bottom is sealed, the position of the steel pipe column can be continuously ensured only by adjusting the rail cross rod and matching with the vertical collimator.
Preferably, the adjustable cross bar is provided with a roller matched with the sliding groove.
Has the advantages that: the gyro wheel can make things convenient for the staff to operate adjustable horizontal pole, makes the more convenient utilization locating pin of staff carry out the alignment to the steel-pipe column.
Preferably, the cross brace is detachably connected with the bracket.
Has the advantages that: set up the stull into to dismantle with the support and be connected, can be better support on next step and provide fine work basis.
Preferably, the wale is connected with the steel pipe column through an intermediate member.
Has the advantages that: after the steel-pipe column is transferred to the design elevation, remove the both sides of instrument festival with the stull to pass through intermediate member and steel-pipe column fixed connection with the stull, satisfy the steel-pipe column and no longer take place the skew.
Preferably, the positioning pin is perpendicular to the outer circular wall of the steel pipe column.
Has the advantages that: when the positioning pin is in contact with the steel pipe column, the positioning pin is perpendicular to the contact surface of the positioning pin and the steel pipe column; therefore, the tops of the positioning pins on the same horizontal plane can be in contact with the steel pipe column, and the position of the steel pipe column is unique.
The method for accurately positioning the inserted steel pipe column comprises the following steps:
hardening the pavement;
measuring and paying off, and drilling by a drilling machine;
installing a bored pile reinforcement cage in the hole, and pouring concrete to a required elevation;
installing a positioning platform on the earth surface:
after concrete pouring is finished, two sections of profile steel are respectively installed on two sides of one end, exposed out of the ground, of the pile casing, and two channel steel are installed on the section steel; the channel steel is vertical to any one section steel; in the process, the placing positions of the section steel and the channel steel cannot influence the lower part of the interference steel pipe column;
hoisting the steel pipe column into the hole:
moving the adjustable cross rod on the positioning platform, adjusting the adjustable cross rod to enable the positioning pins to contact the steel pipe column, and ensuring that the positioning pins on each horizontal plane are in contact with the outer side wall of the steel pipe column and are perpendicular to the contact surface of the positioning pins and the outer side wall of the steel pipe column; fixing the tool joint of the steel pipe column to the steel pipe column, continuing to lower the steel pipe column after the tool joint is finished, and slowly lowering the steel pipe column to a designed elevation;
fixing the inserted steel pipe column:
moving the adjustable cross rod from one side of the tool joint, lowering the steel pipe column to a designed elevation, moving the adjustable cross rod to a designed position, and connecting the bottom of the steel pipe column with the concrete plane by using a fixing piece to ensure the verticality of the steel pipe column; moving the cross brace to two sides of the tool joint, and welding the intermediate piece on the cross brace by using an electric welding machine to ensure that the steel pipe column does not deviate;
and (5) dismantling the steel pipe column by the positioning platform and backfilling.
Has the advantages that: the process has the advantages of simple operation, high work efficiency, low cost, high and controllable precision and small safety risk, and ensures safe, high-quality and smooth implementation of engineering; the working efficiency is high, the installation is accurate, the operation is simple, and remarkable economic benefit can be obtained; the construction safety degree is high, the steel pipe column is accurately positioned, the construction speed is high, and the method has good guiding effect on similar projects in the future
Preferably, the perpendicularity of the steel pipe column is measured by using a laser plummet in the whole process of hoisting the steel pipe column manhole.
Has the advantages that: the whole-course measurement of the laser plummet is utilized, and the accuracy of the steel pipe column in the inserting hole can be better ensured.
Preferably, the difference between the diagonal points of the positioning pins and the positioning platform is not more than 10 mm.
Has the advantages that: the positioning pins are ensured to be on the same horizontal plane as much as possible, so that the insertion precision is more accurate.
Compared with the prior art, the invention realizes the positioning and installation of the steel pipe column by a two-point positioning method, and keeps high precision and good controllability; in actual positioning, the steel pipe column does not need to be adjusted by external force for positioning and alignment as long as the position of the positioning platform is ensured; in the process of lowering the steel pipe column, the positioning pin can continuously conduct position guidance on the steel pipe column until the steel pipe column is connected with the concrete plane; by the method, the investment of a large amount of mechanical equipment in the whole project engineering can be avoided; the bottom of the steel pipe column can be fixed by one-time pouring concrete, and the steel pipe column can be positioned for multiple times by utilizing the adjustable cross rod, so that the positioning accuracy of the steel pipe column is ensured; in the construction engineering, the perpendicularity and the central position of the steel pipe column are directly measured in the whole process by using auxiliary equipment, and the deviation can be corrected in time, so that the uncontrollable performance of error accumulation and untight contact between the steel pipe column and a positioner in the traditional process is avoided, and the operation precision is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a positioning platform according to the present invention;
FIG. 3 is a schematic view of an adjustable cross bar according to the present invention;
FIG. 4 is a schematic view of the connection between the section steel and the channel steel in the invention;
FIG. 5 is a schematic view of the positioning platform of the present invention;
FIG. 6 is a schematic view of the lowering of a steel pipe column according to the present invention;
FIG. 7 is a schematic structural view of a steel pipe column positioned by a positioning pin according to the present invention;
FIG. 8 is a schematic structural view of the positioning steel pipe column of the intermediate piece in the invention;
FIG. 9 is a schematic structural view of the steel pipe column according to the present invention before backfilling.
In the figure: 1-steel pipe column; 2-tool section; 3-presetting holes; 4-protecting the cylinder; 5-deformed steel bar; 6-positioning pins; 7-section steel; 8-channel steel; 9-a fixing piece; 10-a base; 11-a scaffold; 12-a rail cross-bar; 13-horizontal bracing; 14-an adjustable cross bar; 15-intermediate piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. For those skilled in the art, the drawings of the embodiments with specific meanings of the terms in the present invention can be understood in specific situations, and the technical solutions in the embodiments of the present invention are clearly and completely described. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The invention is further illustrated with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 9, the steel pipe column 1 insertion accurate positioning structure comprises a steel pipe column 1, wherein the outer side of the steel pipe column 1 is connected with a tool joint 2; the device also comprises a preset hole 3, a protective cylinder 4 arranged in the preset hole 3 and a positioning platform; one end of the protective cylinder 4 is exposed out of the ground; the positioning platform is positioned above the hole opening of the preset hole 3 and is connected with the ground through a deformed steel bar 5, and a positioning pin 6 for limiting the steel pipe column 1 is arranged on the positioning platform; the steel pipe column 1 is inserted into the pile casing 4; two sides of one end, exposed out of the ground, of the protective cylinder 4 are provided with section steel 7, and channel steel 8 is vertically arranged on the section steel 7; the bottom end of the steel pipe column 1 is fixed with the hole bottom plane through a fixing piece 9.
Before the positioning platform is installed, a bored pile reinforcement cage needs to be installed in the preset hole 3, and concrete is poured to a required elevation; when the positioning platform is arranged, a worker adjusts the central position and the horizontal position of the positioning platform by using a total station and a jack to determine the hole falling position of the steel pipe column 1, and when the steel pipe column 1 is away from one end of a concrete surface, the total station is used for positioning the central position of the steel pipe column 1 to determine the initial position of the steel pipe column 1; then, the alignment of the steel pipe column 1 can be completed by using the positioning pin 6, and the aligned steel pipe column 1 falls to the ground and is fixed with the concrete plane through the fixing piece 9 to keep the surface verticality; in the process, the position of the positioning platform is only required to be ensured, and the external force is not required to perform positioning and alignment on the multiple steel pipe columns 1. In the present embodiment, the section steel 7 used is H-section steel.
For better use of the invention, the positioning platform comprises a base 10, a support 11, a cross brace 13 for stabilizing the support 11 and an adjustable cross bar 14; the base 10 is connected with the ground through the deformed steel bar 5; one end of the bracket 11 is connected with the base 10; the bracket 11 is provided with a track cross rod 12 with a sliding chute; the adjustable cross bar 14 is connected with the track cross bar 12 in a sliding manner; the positioning pin 6 is arranged on the adjustable cross bar 14. The positioning platform is provided with an adjustable cross rod 14, and the adjustable cross rod 14 is provided with a positioning pin 6; generally, the bracket 11 is provided with two adjustable crossbars 14, and the adjustable crossbars 14 are provided with two positioning pins 6, so that generally, one end of the steel pipe column 1 can be positioned by four positioning pins 6 on the same horizontal plane.
For better use of the present invention, the upper and lower sections of the frame 11 are each provided with a track rail 12 and an adjustable rail 14 slidably connected to the track rail 12. The steel pipe column 1 is positioned by installing through a two-point positioning method; one point is on the earth surface, and the other point is in the preset hole 3; positioning the top elevation and the ground position of the steel pipe column 1 by the earth surface point by using a positioning platform; the preset hole 3 is fixed with the concrete plane by a fixing piece 9; during bottom sealing, the position of the steel pipe column 1 can be continuously ensured only by adjusting the track cross rod 12 and matching with a vertical collimator.
For a better use of the invention, the adjustable crossbar 14 is provided with rollers cooperating with runners. The gyro wheel can make things convenient for the staff to operate adjustable horizontal pole 14, makes the more convenient utilization locating pin 6 of staff carry out the alignment to steel-pipe column 1.
For better use of the invention, the wales 13 are detachably connected to the brackets 11. Set up stull 13 to be connected with support 11 is dismantled, can be better for supporting on next step and provide fine work basis.
For better use of the invention, the wales 13 are connected to the steel pipe column 1 through intermediate members 15. After steel-pipe column 1 transferred to the design elevation, removed stull 13 to the both sides of instrument festival 2 to with stull 13 through intermediate member 15 and steel-pipe column 1 fixed connection, satisfy steel-pipe column 1 and no longer take place the skew.
For better use of the invention, the positioning pin 6 is perpendicular to the outer circular wall of the steel pipe column 1. When the positioning pin 6 is in contact with the steel pipe column 1, the positioning pin 6 is perpendicular to the contact surface of the positioning pin 6 and the steel pipe column 1; therefore, the tops of the positioning pins 6 on the same horizontal plane can be in contact with the steel pipe column 1, and the position of the steel pipe column 1 is unique. It should be noted that, in this embodiment, there are 4 positioning pins 6 on the same horizontal plane, and 2 positioning pins 6 are provided on each adjustable crossbar 14, and these 4 positioning pins 6 are uniformly distributed on the outer side wall of the steel pipe column 1, and it is ensured that the height difference of each positioning pin 6 is not greater than 10 mm.
When the embodiment is specifically used for positioning operation, the method comprises the following steps:
(1) firstly, hardening a construction site;
(2) measuring and paying off on the construction ground surface, positioning a construction pile position, embedding a pile casing 4, and digging out a preset hole 3 by using a drilling machine;
(3) installing a bored pile reinforcement cage in the preset hole 3, and pouring concrete to a required elevation;
(4) installing a positioning platform above the hole opening of the preset hole 3:
after the concrete is poured, two sections of section steel 7 are respectively arranged on two sides of one end, exposed out of the ground, of the pile casing 4, and two channel steel 8 are arranged on the sections of section steel 7; the channel steel 8 is vertical to any one section steel 7; in the process, the placement positions of the section steel 7 and the channel steel 8 cannot influence the lower part of the interference steel pipe column 1;
adjusting the positioning platform to an orifice, and respectively adjusting the central position and the horizontal position of the positioning platform by using a total station and a jack; after the positioning platform is adjusted, punching holes on the ground around the platform by using a percussion drill, then driving deformed steel bars 5 into the holes, and welding the deformed steel bars 5 on the positioning platform so as to fix the platform on the ground;
(5) hoisting the steel pipe column 1 into the preset hole 3:
arranging a tool joint 2 on the outer side of the steel pipe column 1 in advance; the steel pipe column 1 is actually conveyed into a drilled pile for internal control, and the steel pipe column 1 stops being put down at a position 0.5-1 m away from the concrete plane of the pile top in the insertion depth; positioning the center position of the steel pipe column 1 by using a total station, and generally adjusting the center position to the center deviation of the steel pipe column 1 to be less than 20 mm;
it should be noted that one end of the tool section 2 is fixedly connected with the concrete plane;
(6) the positioning pin 6 contacts the steel pipe column 1:
moving the adjustable cross rod 14 on the positioning platform, adjusting the adjustable cross rod 14 to enable the positioning pins 6 to contact the steel pipe column 1, and ensuring that the positioning pins 6 on each horizontal plane are in contact with the outer side wall of the steel pipe column 1 and are perpendicular to the contact surface of the two; fixing the tool joint 2 of the steel pipe column 1 to the steel pipe column 1, continuing to lower the steel pipe column 1 after the completion, slowly lowering the steel pipe column 1 to a designed elevation, and measuring the perpendicularity of the steel pipe column 1 in the whole process by using a laser plummet;
it should be noted that a high-strength bolt wrench is arranged between the tool joint 2 and the steel pipe column 1, and the tool joint 2 and the steel pipe column 1 can be fixed by the wrench; the difference between the diagonal points of the positioning pin and the positioning platform is not more than 10 mm;
(7) fixing the steel pipe column 1:
firstly, moving an adjustable cross rod 14 from one side of a tool joint 2, lowering the steel pipe column 1 to a designed elevation, then moving the adjustable cross rod 14 to a designed position, and connecting the bottom of the steel pipe column 1 with a concrete plane by using a fixing piece 9 to ensure the verticality of the steel pipe column 1; then moving the cross brace 13 to two sides of the tool joint 2, and welding a triangular block serving as a middle piece 15 on the cross brace 13 by using an electric welding machine so as to fix the steel pipe column 1 without deviation; this step may be followed by removing the adjustable cross bar 14;
(8) dismantling the positioning platform:
firstly, dismantling a positioning platform; after a certain time, usually two days, the cross brace 13 and the tool section 2 are removed; and backfilling the periphery of the steel pipe column 1 by using fine sand stones after a period of time, usually seven days, and performing balanced backfilling on the periphery during backfilling to prevent the steel pipe column 1 from being extruded and deviated by single-side backfilling.
Through the steps, the process of accurately inserting the steel pipe column 1 is completed.
In the steps, the laser plummet is adopted to ensure the measurement precision; the verticality measurement and positioning of the steel pipe column 1 are realized by a two-point positioning method and a jack of the steel pipe column 1; the construction method is simple to operate, high in work efficiency, low in cost, high and controllable in precision, small in safety risk and capable of guaranteeing safe, high-quality and smooth implementation of engineering. The application of the new construction method has the advantages of high working efficiency, accurate installation and simple operation, and obtains remarkable economic benefit; and the construction safety degree is high, the steel pipe column 1 is accurately positioned, the construction speed is high, and the steel pipe column has a good guiding effect on similar projects in the future.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. Steel-pipe column inserts accurate positioning structure, including steel-pipe column (1), the outside of steel-pipe column (1) is connected with instrument festival (2), its characterized in that still includes:
a preset hole (3);
the protective cylinder (4) is arranged in the preset hole (3), and one end of the protective cylinder (4) is exposed out of the ground; and
the positioning platform is positioned above the hole opening of the preset hole (3) and is connected with the ground through a deformed steel bar (5), and a positioning pin (6) used for limiting the steel pipe column (1) is arranged on the positioning platform;
wherein the steel pipe column (1) is inserted into a pile casing (4); both sides of one end, exposed out of the ground, of the protective cylinder (4) are provided with section steel (7), and channel steel (8) is vertically arranged on the section steel (7); the bottom end of the steel pipe column (1) is fixed with the hole bottom plane through a fixing piece (9).
2. The steel pipe column insertion precision positioning structure of claim 1, wherein the positioning platform comprises:
the base (10), the said base (10) is connected with ground through the deformed steel bar (5);
the bracket (11), one end of the bracket (11) is connected with the base (10); the support (11) is provided with a track cross rod (12) with a sliding groove;
a cross brace (13) for stabilizing the support (11); and
the adjustable cross bar (14), the adjustable cross bar (14) is connected with the track cross bar (12) in a sliding way;
wherein the positioning pin (6) is arranged on the adjustable cross rod (14).
3. The steel pipe column insertion accurate positioning structure according to claim 2, wherein the upper end and the lower section of the bracket (11) are provided with a track rail (12) and an adjustable rail (14) slidably connected with the track rail (12).
4. The steel pipe column insertion precision positioning structure according to claim 3, wherein the adjustable cross bar (14) is provided with a roller engaged with the sliding groove.
5. The steel pipe column insertion precision positioning structure according to claim 2, wherein the wale (13) is detachably connected to the bracket (11).
6. The steel pipe column insertion precision positioning structure according to claim 5, wherein the wale (13) is connected with the steel pipe column (1) through an intermediate member (15).
7. The steel pipe column insertion precision positioning structure according to claim 1, wherein the positioning pin (6) is perpendicular to the outer circumferential wall of the steel pipe column (1).
8. The method for accurately positioning the inserted steel pipe column is characterized by comprising the following steps of:
hardening the pavement;
measuring and paying off, and drilling by a drilling machine;
installing a bored pile reinforcement cage in the hole, and pouring concrete to a required elevation;
installing a positioning platform on the earth surface:
after concrete pouring is finished, two sections (7) are respectively installed on two sides of one end, exposed out of the ground, of the pile casing (4), and two channel steels (8) are installed on the sections (7); the channel steel (8) is vertical to any one section steel (7); in the process, the placing positions of the section steel (7) and the channel steel (8) cannot influence the lower part of the interference steel pipe column (1);
hoisting the steel pipe column (1) into the hole:
moving an adjustable cross rod (14) on a positioning platform, adjusting the adjustable cross rod (14), enabling the positioning pins (6) to contact the steel pipe column (1), and ensuring that the positioning pins (6) on each horizontal plane are in contact with the outer side wall of the steel pipe column (1) and are perpendicular to the contact surface of the two; fixing the tool joint (2) of the steel pipe column (1) to the steel pipe column (1), continuing to lower the steel pipe column (1) after the completion, and slowly lowering the steel pipe column (1) to a designed elevation;
inserting and fixing the steel pipe column (1):
moving an adjustable cross rod (14) from one side of the tool joint (2), lowering the steel pipe column (1) to a designed elevation, moving the adjustable cross rod (14) to a designed position, and connecting the bottom of the steel pipe column (1) with a concrete plane by using a fixing piece (9) to ensure the verticality of the steel pipe column (1); moving the cross brace (13) to two sides of the tool joint (2), and welding the intermediate piece (15) on the cross brace (13) by using an electric welding machine to ensure that the steel pipe column (1) does not deviate;
and (5) removing the steel pipe column (1) by the positioning platform and backfilling.
9. The steel pipe column inserting accurate positioning method as claimed in claim 8, wherein the perpendicularity of the steel pipe column (1) is measured using a laser plummet throughout the process of hoisting the steel pipe column (1) into the hole.
10. The method for accurately positioning the insertion of a steel pipe column according to claim 8, wherein the difference between the diagonal height of the positioning pin (6) and the diagonal height of the positioning platform is not more than 10 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113217704A (en) * | 2021-04-13 | 2021-08-06 | 浙江万合能源环境科技有限公司 | Accurate positioning and embedding method for vertical embedded pipe for natural underground operation |
| CN113481861A (en) * | 2021-07-21 | 2021-10-08 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
| CN114837222A (en) * | 2021-02-09 | 2022-08-02 | 北京住总集团有限责任公司 | Underground column construction method based on self weight |
| CN114922225A (en) * | 2021-02-09 | 2022-08-19 | 北京住总集团有限责任公司 | Underground construction platform |
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| CN114837222A (en) * | 2021-02-09 | 2022-08-02 | 北京住总集团有限责任公司 | Underground column construction method based on self weight |
| CN114922225A (en) * | 2021-02-09 | 2022-08-19 | 北京住总集团有限责任公司 | Underground construction platform |
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| CN113217704A (en) * | 2021-04-13 | 2021-08-06 | 浙江万合能源环境科技有限公司 | Accurate positioning and embedding method for vertical embedded pipe for natural underground operation |
| CN113217704B (en) * | 2021-04-13 | 2022-12-02 | 浙江万合能源环境科技有限公司 | Accurate positioning and embedding method for vertical embedded pipe for natural underground operation |
| CN113481861A (en) * | 2021-07-21 | 2021-10-08 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
| CN113481861B (en) * | 2021-07-21 | 2022-09-02 | 中铁七局集团有限公司 | Centering support for assisting installation and positioning of steel pipe column |
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