CN114378412B - Construction method for sleeve-in-sleeve connection of limited-space miniature steel pipe pile sleeve - Google Patents
Construction method for sleeve-in-sleeve connection of limited-space miniature steel pipe pile sleeve Download PDFInfo
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- CN114378412B CN114378412B CN202111682890.5A CN202111682890A CN114378412B CN 114378412 B CN114378412 B CN 114378412B CN 202111682890 A CN202111682890 A CN 202111682890A CN 114378412 B CN114378412 B CN 114378412B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 171
- 239000010959 steel Substances 0.000 title claims abstract description 171
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 142
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 6
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 hexamethyltetramine Chemical compound 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical 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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method for sleeve connection in a limited space miniature steel pipe pile sleeve, which relates to the technical field of steel pipe pile construction and comprises the following specific steps: 1. selecting a material; 2. cleaning a welded junction; 3. splicing inner bushing pipes; 4. welding; 5. splicing steel pipes; 6. welding the steel pipe; 7. and detecting ending. According to the invention, the lining sleeve is arranged between the two steel pipes, one steel pipe is welded and fixed with the lining sleeve before the two steel pipes are mutually spliced, and the other steel pipe is sleeved outside the lining sleeve, so that the splicing between the two steel pipes is realized, and the arrangement of the lining sleeve can effectively improve the connection stability of the two steel pipes before welding, so that the welding difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of steel pipe pile construction, in particular to a construction method for sleeve connection in a limited space miniature steel pipe pile sleeve.
Background
When miniature steel-pipe pile is under construction, sometimes because of the restriction of place condition, need be under construction in indoor space, just lead to steel pipe length to need carry out the segmentation construction according to indoor height, and when multistage steel pipe is under the indoor welding construction, because indoor space is less, be difficult to guarantee the fixed in position between two steel pipes when welding, increased the degree of difficulty of welding work. Therefore, it is necessary to invent a construction method for sleeve connection in a limited space miniature steel pipe pile sleeve to solve the above problems.
Disclosure of Invention
The invention aims to provide a construction method for sleeve connection in a limited-space miniature steel pipe pile sleeve, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a construction method for sleeve connection in a limited space miniature steel pipe pile sleeve comprises the following specific steps:
1. selecting materials, screening steel pipes used for the steel pipe piles, selecting steel pipes with the specification being matched according to data on construction drawings and construction environments, checking whether obvious defects exist on the surfaces of the steel pipes, and selecting the steel pipes with smooth surfaces for later use;
2. cleaning welded junctions, namely cleaning dirt at the welding ports of the steel pipes by adopting a cleaning agent, and cleaning rust at the welding ports of the steel pipes by adopting sand paper and steel wire balls;
3. splicing an inner bushing pipe, inserting the inner bushing pipe into one end of a steel pipe to be welded, wherein the length of the inner bushing pipe is about 300mm, the inner bushing pipe extends into the steel pipe to be about 150mm, inserting a clamping plate into a clamping groove formed in the middle of the inner bushing pipe, and inserting a positioning steel bar into a reserved hole at one end of the steel pipe so as to fix the positions between the inner bushing pipe and the steel pipe;
4. welding, namely welding the steel pipe and the inner lining pipe in an argon arc welding or arc welding mode, wherein the welding is carried out from two sides of the steel pipe, after the welding of two sides of the strip steel pipe is finished, extracting a clamping plate, and carrying out repair welding on the non-welded part of the steel pipe and the inner lining pipe, wherein the welding seam height is required to be noted, and the welding seam height is not required to exceed the difference between the outer diameter of the inner lining pipe and the inner diameter of the steel pipe;
5. splicing the steel pipes, sleeving the steel pipes to be spliced at the other end of the lining sleeve until one ends of the two steel pipes are attached, and inserting positioning steel bars into the reserved holes to ensure that the positions between the steel pipes and the lining sleeve are fixed;
6. welding the steel pipes, namely welding the joint of the two steel pipes in an argon arc welding or arc welding mode, wherein the welding is carried out in a surrounding welding mode, and the welding seam height and the welding seam width difference are paid attention to during the welding;
detecting ending, detecting the welded part of the steel pipe, firstly detecting the appearance, wherein the detection content comprises whether a welding line is round and transited, whether the residual height of the welding line and the width difference of the welding line meet the standard, whether the surface of a welding port has defects such as undercut, staggered edge, air holes, slag inclusion, cracks and the like, extracting a positioning steel bar after the appearance detection is finished, and detecting the strength of the welded part, wherein the strength detection comprises tensile strength detection and hardness detection.
Preferably, in the second step, when rust at the welded part of the steel pipe is more, hydrochloric acid, hexamethylenetetramine, sodium dodecyl benzene sulfonate and sodium chloride can be mixed into a rust remover, the welded end of the steel pipe is immersed in the rust remover, the rust on the surface of the steel pipe is removed, and after the rust removal is completed, the rust remover is erased by sponge and cotton cloth, so that the welding junction cleaning work can be completed.
Preferably, in the fourth step, the main welding process includes:
1) Selecting welding rods or welding wires, and selecting welding rods or welding wires with proper specifications according to the materials and caliber of the steel pipe pile and the lining sleeve;
2) The welded junction is electrified and preheated, the steel pipe pile and the inner bushing pipe are electrified and heated in an electric heating mode, and the temperature of the welded junction of the steel pipe pile and the inner doped sleeve pipe is detected by a temperature detector;
3) Welding, namely welding the steel pipe pile and the inner bushing pipe in an argon arc welding or arc welding mode, or welding in an argon arc welding bottoming mode and an arc welding supplementary mode;
4) And (c) detecting a welding port after welding, wherein the detection content is the same as that of the seventh step.
Preferably, in the fifth step, before the positioning steel bar is inserted, the opening of the lining sleeve should be corresponding to the reserved hole of the steel tube, and meanwhile, whether the ends of the two steel tubes are attached should be noted.
Preferably, in the sixth step, the welding process is the same as that in the fourth step;
preferably, in the seventh step, after the welding quality is detected to be qualified, the welding seam is polished by adopting an angle grinder, wherein the polishing standard is that the surface is smooth and has no protrusions, and the welding seam can be in round transition between two steel pipes.
The invention has the technical effects and advantages that:
1. according to the invention, the lining sleeve is arranged between the two steel pipes, one steel pipe is welded and fixed with the lining sleeve before the two steel pipes are mutually spliced, and the other steel pipe is sleeved outside the lining sleeve, so that the splicing between the two steel pipes is realized, and the arrangement of the lining sleeve can effectively improve the connection stability of the two steel pipes before welding, so that the welding difficulty is reduced;
2. according to the invention, the clamping groove and the clamping plate are arranged, the clamping groove is positioned in the middle of the lining sleeve, the clamping groove and the clamping plate are arranged to facilitate the determination of the length of the lining sleeve inserted into the steel pipes, the equal length of the lining sleeve penetrating into the two steel pipes is ensured, and the connection stability between the steel pipes and the lining sleeve is improved by arranging the through holes, the reserved holes and the positioning steel bars, so that the welding of the steel pipes is facilitated;
3. the invention solves the problem of difficult steel pipe pile segment construction by adopting a mode of splicing and welding the steel pipe and the inner bushing pipe, and simultaneously ensures the connection quality of the steel pipe pile.
Drawings
FIG. 1 is a schematic view of a liner sleeve according to the present invention.
FIG. 2 is a schematic view of a liner sleeve of the present invention spliced with a steel pipe.
Fig. 3 is a schematic cross-sectional view of the steel pipe of the present invention after splicing.
In the figure: 1. a steel pipe; 2. a liner sleeve; 3. a clamping groove; a 4 clamping plate; 5. a through hole; 6. a preformed hole; 7. and positioning the steel bar.
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.
The invention provides a construction method for sleeve-in-sleeve connection of a limited space miniature steel pipe pile sleeve, which is shown in figures 1-3 and comprises the following specific steps:
1. selecting materials, screening the steel pipes 1 used for the steel pipe piles, selecting the steel pipes 1 with the specification being matched according to the data on the construction drawing and the construction environment, checking whether obvious defects exist on the surfaces of the steel pipes 1, and selecting the steel pipes 1 with smooth surfaces for standby;
2. cleaning a welded junction, namely cleaning dirt at a welding port of a steel pipe 1 by adopting a cleaning agent, cleaning rust at the welding port of the steel pipe 1 by adopting sand paper and steel wire balls, and when the rust at the welding port of the steel pipe 1 is more, mixing hydrochloric acid, hexamethyltetramine, sodium dodecyl benzene sulfonate and sodium chloride into a rust remover, immersing the welding end of the steel pipe 1 into the rust remover, cleaning the rust on the surface of the steel pipe 1, and after rust removal is finished, wiping the rust remover by adopting sponge and cotton cloth to finish the work of cleaning the welded junction;
3. splicing the inner lining sleeve 2, inserting the inner lining sleeve 2 into one end of the steel pipe 1 to be welded, wherein the length of the inner lining sleeve 2 is about 300mm, the length of the inner lining sleeve 2 penetrating into the steel pipe 1 is about 150mm, inserting the clamping plate 4 into a clamping groove 3 formed in the middle of the inner lining sleeve 2, and inserting the positioning steel bar 7 into a reserved hole 6 at one end of the steel pipe 1 so as to fix the positions between the inner lining sleeve 2 and the steel pipe 1;
4. the welding, adopt argon arc welding or electric arc welding mode to weld steel pipe 1 and lining sleeve 2, should weld from the both sides of steel pipe 1 during the welding, after belted steel pipe 1 both sides welding is accomplished, take cardboard 4 out, carry out repair welding to steel pipe 1 and lining sleeve 2 non-welded part, should pay attention to the seam height during the welding, the seam height must not surpass the external diameter of lining sleeve 2 and the internal diameter difference of steel pipe 1, the main flow of welding is:
1) Selecting welding rods or welding wires, and selecting welding rods or welding wires with proper specifications according to the materials and caliber of the steel pipe pile and the inner lining pipe 2;
2) The welded junction is electrified and preheated, the steel pipe pile and the lining sleeve 2 are electrified and heated in an electric heating mode, and the temperature of the welded junction of the steel pipe pile and the lining sleeve is detected by a temperature detector;
3) Welding, namely welding the steel pipe pile and the inner bushing pipe 2 in an argon arc welding or arc welding mode, or welding in an argon arc welding bottoming mode and an arc welding supplementary mode;
4) Detecting, namely detecting a welding port after welding is finished, wherein the detection content is the same as that of the seventh step;
5. splicing the steel pipes 1, sleeving the steel pipes 1 to be spliced at the other end of the lining sleeve 2 until one ends of the two steel pipes 1 are jointed, inserting positioning steel bars 7 into the reserved holes 6 to ensure that the positions between the steel pipes 1 and the lining sleeve 2 are fixed, and paying attention to the fact that holes on the lining sleeve 2 correspond to the reserved holes 6 of the steel pipes 1 before inserting the positioning steel bars 7, and paying attention to whether the ends of the two steel pipes 1 are jointed or not;
6. the steel pipes 1 are welded, the joint of the two steel pipes 1 is welded by adopting an argon arc welding or arc welding mode, the welding is carried out in a surrounding welding mode, the welding seam height and the welding seam width difference are paid attention to during the welding, and the welding flow is the same as that of the fourth step;
detecting ending, detecting the welding position of the steel pipe 1, firstly detecting the appearance, wherein the detection content comprises whether the welding line is in round transition or not, whether the residual height of the welding line and the width difference of the welding line meet the standard or not, whether the welding line surface has defects of undercut, staggered edge, air holes, slag inclusion, cracks and the like or not, extracting the positioning steel bar 7 after the appearance detection is finished, detecting the strength of the welding position, detecting the strength, including tensile strength detection and hardness detection, polishing the welding line by adopting an angle grinder after the welding quality detection is qualified, and the polishing standard is that the surface is smooth and has no protrusions, and the welding line can be in round transition between the two steel pipes 1.
According to the invention, the lining sleeve 2 is arranged between the two steel pipes 1, one steel pipe 1 and the lining sleeve 2 are welded and fixed before the two steel pipes 1 are mutually spliced, and the other steel pipe 1 is sleeved on the outer side of the lining sleeve 2, so that the splicing between the two steel pipes 1 is realized, the arrangement of the lining sleeve 2 can effectively improve the connection stability of the two steel pipes 1 before welding, thereby reducing the welding difficulty, the clamping groove 3 and the clamping plate 4 are arranged, the clamping groove 3 is positioned in the middle part of the lining sleeve 2, the clamping groove 3 and the clamping plate 4 are arranged to facilitate the determination of the length of the lining sleeve 2 inserted into the steel pipes 1, the equal length of the lining sleeve 2 penetrating into the two steel pipes 1 is ensured, the connection stability between the steel pipes 1 and the lining sleeve 2 is improved through the arrangement of the through holes 5, the reserved holes 6 and the positioning reinforcing steel bars 7, the welding of the steel pipes 1 is facilitated, and the problem of difficult construction of steel pipe pile segments is solved by adopting the way of splicing and welding of the steel pipes 1 and the lining sleeve 2 is ensured.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (6)
1. The construction method for the sleeve connection of the miniature steel pipe pile sleeve in the limited space is characterized by comprising the following specific steps of:
1. selecting materials, screening steel pipes used for the steel pipe piles, selecting steel pipes with the specification being matched according to data on construction drawings and construction environments, checking whether obvious defects exist on the surfaces of the steel pipes, and selecting the steel pipes with smooth surfaces for later use;
2. cleaning welded junctions, namely cleaning dirt at the welding ports of the steel pipes by adopting a cleaning agent, and cleaning rust at the welding ports of the steel pipes by adopting sand paper and steel wire balls;
3. splicing an inner bushing pipe, inserting the inner bushing pipe into one end of a steel pipe to be welded, wherein the length of the inner bushing pipe is about 300mm, the inner bushing pipe extends into the steel pipe to be about 150mm, inserting a clamping plate into a clamping groove formed in the middle of the inner bushing pipe, and inserting a positioning steel bar into a reserved hole at one end of the steel pipe so as to fix the positions between the inner bushing pipe and the steel pipe;
4. welding, namely welding the steel pipe and the inner lining pipe in an argon arc welding or arc welding mode, wherein the welding is carried out from two sides of the steel pipe, after the welding of two sides of the strip steel pipe is finished, extracting a clamping plate, and carrying out repair welding on the non-welded part of the steel pipe and the inner lining pipe, wherein the welding seam height is required to be noted, and the welding seam height is not required to exceed the difference between the outer diameter of the inner lining pipe and the inner diameter of the steel pipe;
5. splicing the steel pipes, sleeving the steel pipes to be spliced at the other end of the lining sleeve until one ends of the two steel pipes are attached, and inserting positioning steel bars into the reserved holes to ensure that the positions between the steel pipes and the lining sleeve are fixed;
6. welding the steel pipes, namely welding the joint of the two steel pipes in an argon arc welding or arc welding mode, wherein the welding is carried out in a surrounding welding mode, and the welding seam height and the welding seam width difference are paid attention to during the welding;
7. detecting ending, detecting the welded part of the steel pipe, firstly detecting the appearance, wherein the detection content comprises whether a welding line is round and transited, whether the residual height of the welding line and the width difference of the welding line meet the standard, whether the surface of a welding port has defects such as undercut, staggered edge, air holes, slag inclusion, cracks and the like, extracting a positioning steel bar after the appearance detection is finished, and detecting the strength of the welded part, wherein the strength detection comprises tensile strength detection and hardness detection.
2. The construction method for connecting the middle sleeve of the miniature steel pipe pile sleeve in the limited space according to claim 1, wherein in the second step, when rust at the welded part of the steel pipe is more, hydrochloric acid, hexamethylenetetramine, sodium dodecyl benzene sulfonate and sodium chloride are mixed into a rust remover, the welded end of the steel pipe is immersed in the rust remover, rust on the surface of the steel pipe is removed, and after the rust removal is finished, sponge and cotton cloth are used for removing the rust remover, so that the work of cleaning the welded junction can be finished.
3. The method for constructing the sleeve-in-sleeve connection of the miniature steel pipe pile sleeve in the limited space according to claim 2, wherein in the fourth step, the main welding process is as follows:
1) Selecting welding rods or welding wires, and selecting welding rods or welding wires with proper specifications according to the materials and caliber of the steel pipe pile and the lining sleeve;
2) The welded junction is electrified and preheated, the steel pipe pile and the inner bushing pipe are electrified and heated in an electric heating mode, and the temperature of the welded junction of the steel pipe pile and the inner doped sleeve pipe is detected by a temperature detector;
3) Welding, namely welding the steel pipe pile and the inner bushing pipe in an argon arc welding or arc welding mode, or welding in an argon arc welding bottoming mode and an arc welding supplementary mode;
4) And (c) detecting a welding port after welding, wherein the detection content is the same as that of the seventh step.
4. The method for constructing a sleeve-in-sleeve connection of a miniature steel pipe pile sleeve in a limited space according to claim 3, wherein in the fifth step, before the positioning steel bar is inserted, the opening of the lining sleeve should be corresponding to the reserved hole of the steel pipe, and meanwhile, whether the ends of the two steel pipes are attached should be noted.
5. The method for constructing the sleeve-in-sleeve connection of the miniature steel pipe pile sleeve in a limited space according to claim 4, wherein in the sixth step, the welding process is the same as that in the fourth step.
6. The construction method for sleeve connection of miniature steel pipe pile sleeves in limited space according to claim 5, wherein in the seventh step, after welding quality is detected to be qualified, a corner grinder is adopted to polish a welding line, the polishing standard is that the surface is smooth and has no protrusions, and the welding line can be in round transition between two steel pipes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111682890.5A CN114378412B (en) | 2021-12-31 | 2021-12-31 | Construction method for sleeve-in-sleeve connection of limited-space miniature steel pipe pile sleeve |
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| CN202111682890.5A CN114378412B (en) | 2021-12-31 | 2021-12-31 | Construction method for sleeve-in-sleeve connection of limited-space miniature steel pipe pile sleeve |
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| CN114378412A CN114378412A (en) | 2022-04-22 |
| CN114378412B true CN114378412B (en) | 2023-10-20 |
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| CN212665336U (en) * | 2020-07-06 | 2021-03-09 | 中建一局钢结构工程有限公司 | Pipe intersecting welding joint structure |
| CN112276293A (en) * | 2020-10-29 | 2021-01-29 | 广船国际有限公司 | Tubular pile circumferential weld welding method |
| CN112252307A (en) * | 2020-11-05 | 2021-01-22 | 中国建筑第四工程局有限公司 | Pile column structure for permanently-faced combined double-steel-pipe upright column pile |
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| CN114378412A (en) | 2022-04-22 |
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