CN105317167A - Threaded-connection square steel pipe column and construction method - Google Patents
Threaded-connection square steel pipe column and construction method Download PDFInfo
- Publication number
- CN105317167A CN105317167A CN201510814449.6A CN201510814449A CN105317167A CN 105317167 A CN105317167 A CN 105317167A CN 201510814449 A CN201510814449 A CN 201510814449A CN 105317167 A CN105317167 A CN 105317167A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pipe column
- crowbar
- threaded
- quadrate steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 147
- 239000010959 steel Substances 0.000 title claims abstract description 147
- 238000010276 construction Methods 0.000 title claims abstract description 9
- 239000011324 bead Substances 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
-
- 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
-
- 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
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
本发明涉及一种螺纹连接的方钢管柱及施工方法，包括若干方钢管柱单元，所述方钢管柱单元之间通过在拼接段处设置带螺纹的圆钢管进行螺纹连接，所述方钢管柱单元与所述带螺纹的圆钢管通过焊缝和多层拼接板连接。其中位于上段的所述方钢管柱单元上设有使撬棍穿过的撬棍孔；当上下相邻的两方钢管柱单元吊装就位后，通过对插入所述撬棍孔的所述撬棍施力来旋紧上段方钢管柱单元，完成所述方钢管柱单元之间的螺纹连接。该发明克服了现场焊接节点的低效率，低质量，受天气和气候影响等缺点。降低了对安装工人技术水平的要求，通过简单操作，即可实现圆钢管柱的拼接。
The invention relates to a threaded square steel pipe column and a construction method, comprising several square steel pipe column units, the square steel pipe column units are threaded by setting round steel pipes with threads at splicing sections, and the square steel pipe column The unit is connected with the threaded round steel pipe through welding seams and multi-layer spliced plates. Wherein the square steel pipe column unit located in the upper section is provided with a crowbar hole through which a crowbar passes; when the upper and lower adjacent two square steel pipe column units are hoisted in place, the crowbar inserted into the crowbar hole The stick applies force to tighten the upper square steel pipe column unit to complete the threaded connection between the square steel pipe column units. The invention overcomes the disadvantages of low efficiency, low quality, weather and climate influence of on-site welded joints. The requirements for the technical level of installation workers are reduced, and the splicing of round steel pipe columns can be realized through simple operations.
Description
Technical field
The present invention relates to a kind of quadrate steel pipe column of being threaded and construction method, belong to building engineering field.
Background technology
At present, in construction work, the splicing of quadrate steel pipe column mainly adopts the mode of Site Welding.The scene splicing of this connecting method to the produce in factory of steel column and node all has strict quality requirement.During produce in factory, need to arrange internal partition in steel pipe column and lower quadrate steel pipe column up, avoid the welding deformation in the crimp of steel pipe in Transportation Engineering and Site Welding process.For guaranteeing Site Welding quality, upper quadrate steel pipe column and lower quadrate steel pipe column need bevel, and arrange composition backing.During on-the-spot splicing, need steel pipe column to be up connected otic placode with lower quadrate steel pipe column arranged outside temporarily.Upper quadrate steel pipe column and lower quadrate steel pipe column adopt is connected otic placode temporary fixed after, beginning Site Welding.This weld seam is positioned at post side, and welding efficiency is low, and welding quality not easily ensures; Site Welding also affects by weather and climate.In addition, after having welded, also need to excise to connect otic placode temporarily, and rust cleaning and touch-up paint.Require higher to the technical level of constructor.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of quadrate steel pipe column of being threaded and construction method are provided.
In order to reach above-mentioned purpose, the present invention adopts following technical scheme:
A kind of quadrate steel pipe column be threaded, comprise some quadrate steel pipe column unit, be threaded by arranging threaded round steel pipe at splice sections place between described quadrate steel pipe column unit, the described quadrate steel pipe column unit being wherein positioned at epimere is provided with the crowbar hole that crowbar is passed; After two neighbouring quadrate steel pipe column unit liftings are in place, by screwing epimere quadrate steel pipe column unit to the described crowbar force inserting described crowbar hole, complete being threaded between described quadrate steel pipe column unit.
Because the quality of steel pipe column is very large, generally, be difficult to suitable concrete operations to realize being threaded between steel pipe column.The present invention utilizes the force of crowbar to steel pipe column to carry out rotating steel tube pole unit, and then realizes being threaded between steel pipe column.Quadrate steel pipe column uses and to be threaded alternative traditional Site Welding, easy construction, and the welding efficiency overcoming Site Welding is low, the drawback that welding quality not easily ensures, and from the impact of weather and climate.
The inside of described splice sections is provided with threaded round steel pipe, and adopt junction plate to be welded by the inwall of the outer wall of described round steel pipe and described quadrate steel pipe column unit, weld bead height is not less than the wall thickness of described quadrate steel pipe column unit; The number of plies of the described junction plate at described splice sections place is no less than 2 layers.
The inwall of described quadrate steel pipe column unit and the outer wall of described round steel pipe tangent, tangent position adopts fillet weld seam, and weld bead height is not less than the wall thickness of described quadrate steel pipe column unit.
The material of described round steel pipe is not less than square steel pipe to be spliced, and wall thickness is not less than described quadrate steel pipe column unit to be spliced, after machining screw, the net cross-sectional area of described round steel pipe and clean moment of inertia are not less than section area and the moment of inertia of described quadrate steel pipe column unit to be spliced.
Described round steel pipe in the described square steel pipe unit of epimere is provided with internal thread, and the described round steel pipe in the described square steel pipe unit of hypomere is provided with external screw thread.
The corresponding position of described splice sections is provided with the bolt pre-manufactured hole passed in order to splice sections high-strength bolt, after neighbouring described quadrate steel pipe column unit threaded engagement, insert described splice sections high-strength bolt at described bolt pre-manufactured hole place and adjacent described round steel pipe pole unit is fixed further.
The thread looseness of adjacent round steel tubing string can be prevented by splice sections high-strength bolt, limit relatively rotating of upper and lower steel pipe.
Described square steel pipe unit and the tangent place of described round steel pipe are provided with described bolt pre-manufactured hole.
Splice sections high-strength bolt is 4, can improve the bearing capacity of connected node further, and screw threaded arrangement is centrosymmetric layout, stability under loading.
Described crowbar hole is arranged in pairs along relative tube wall; It is 2 right that described crowbar hole is at least offered, and offering of often pair of described crowbar hole is highly different; Described crowbar hole after described crowbar is extracted out, with the high-strength bolt filling perforation of crowbar hole.
A construction method for the quadrate steel pipe column be threaded, comprises the following steps:
Step 1: by place for the quadrate steel pipe column unit lifting of epimere, one or more crowbar is inserted corresponding crowbar hole;
Step 2: exert a force to described crowbar, screws epimere quadrate steel pipe column unit;
Step 3: neighbouring described quadrate steel pipe column is fixedly connected with further by high-strength bolt;
Step 4: extract described crowbar out, and replenish described crowbar hole with high-strength bolt.
The invention has the beneficial effects as follows:
Quadrate steel pipe column unit of the present invention is connected by weld seam and multi-layer spliced plate with threaded round steel pipe, and this node that is threaded overcomes the poor efficiency of Site Welding node, low quality, by shortcomings such as weather and climate affect.Reduce the requirement to installer's technical level, by simple operations, the splicing of quadrate steel pipe column can be realized.
Accompanying drawing explanation
Fig. 1 is node schematic appearance of the present invention;
Fig. 2 is node sectional drawing of the present invention;
Fig. 3 is node of the present invention sectional drawing diagonally;
Fig. 4 is the sectional drawing of level connection joint Board position of the present invention;
Fig. 5 is that square steel pipe and round steel pipe splice sections are welded to connect schematic diagram;
Fig. 6 installs crowbar connection diagram;
In figure, 1 is epimere quadrate steel pipe column, and 2 is hypomere quadrate steel pipe column, and 3 is upper round steel pipe splice sections, and 4 is lower round steel pipe splice sections, and 5 is junction plate, and 6 is high-strength bolt, and 7 is crowbar, and 8 for filling up bolt, and 9 is fillet weld, and 10 is junction plate fillet weld.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment:
As shown in Figure 1, quadrate steel pipe column screw thread splicing node comprises epimere quadrate steel pipe column 1 to be spliced and hypomere quadrate steel pipe column 2.As shown in Figures 2 and 3, first in factory, by epimere quadrate steel pipe column 1 with establish female upper round steel pipe splice sections 3 to adopt fillet weld 9 to be welded to connect at tangent position, and weld bead height is not less than square steel pipe wall thickness.Adopt junction plate 5, by epimere quadrate steel pipe column 1 with establish female upper round steel pipe splice sections 3, be welded to connect by junction plate fillet weld 10.Hypomere quadrate steel pipe column 2 is adopted fillet weld 9 welding with establishing female lower round steel pipe splice sections 4 at tangent position, then junction plate 5 is adopted, by hypomere quadrate steel pipe column 2 with establish female lower round steel pipe splice sections 4, be welded to connect by junction plate fillet weld 10.Junction plate adopts one-side-filled angle weld to connect, and weld bead height is not less than square steel pipe wall thickness.The number of plies of junction plate is no less than 2 layers.As shown in Figure 4 and Figure 5, the fillet weld size of fillet weld 9 and junction plate fillet weld 10 is not less than the wall thickness of square steel pipe.
Wherein, the upper splice sections of internal thread and be provided with externally threaded splice sections, cross section is round steel pipe, external diameter and square steel pipe internal diameter to be spliced tangent, steel material is not less than square steel pipe to be spliced, and wall thickness is not less than square steel pipe to be spliced, after guaranteeing machining screw, the net cross-sectional area in the cross section of round steel pipe splice sections and clean moment of inertia are not less than section area and the moment of inertia of square steel pipe to be spliced.
During on-the-spot splicing, first by upper splice sections hoisted in position, installation crowbar 7 is inserted the crowbar hole on epimere quadrate steel pipe column 1 and runs through cylinder, and wherein preset hole is arranged in pairs along relative tube wall, to make crowbar 7 pass body, more meets mechanical characteristic.In order to apply enough power to epimere quadrate steel pipe column 1 with can rotating positioning, epimere quadrate steel pipe column 1 can establish multipair preset hole, the height that the often pair of preset hole is offered is different, to insert many crowbars.
It is worth mentioning that, the preset hole inserting a crowbar might not be arranged in pairs, also a preset hole can be provided with in the side of body, in the sidewall of the opposite side of body, be provided with crowbar limiting component, when rotating crowbar, limiting component plays the effect stopped and to body transmitting forces to crowbar.
Rotate epimere quadrate steel pipe column 1 by crowbar 7, the screw thread of round steel pipe splice sections 3 and lower round steel pipe splice sections 4 is closely engaged.As shown in Figure 4, after epimere quadrate steel pipe column 1 rotate in place, high-strength bolt 6 is screwed in the pre-manufactured hole of upper round steel pipe splice sections 3 and lower round steel pipe splice sections 4, prevents it from loosening.High-strength bolt circumferentially quantity is not less than 4, and is arranged symmetrically with.
As shown in Figure 6, after epimere quadrate steel pipe column 1 and hypomere quadrate steel pipe column 2 have spliced, remove and crowbar 7 is installed, and be screwed into and fill up bolt 8, fill up bolt 8 and adopt high-strength bolt, fill up the installing hole of crowbar 7.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein can be without departing from the spirit or scope of the present invention, realize in other embodiments, the part be not described in detail, for prior art, do not repeat at this.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and feature.
Claims (10)
1. the quadrate steel pipe column be threaded, it is characterized in that: comprise some quadrate steel pipe column unit, be threaded by arranging threaded round steel pipe at splice sections place between described quadrate steel pipe column unit, the described quadrate steel pipe column unit being wherein positioned at epimere is provided with the crowbar hole that crowbar is passed; After two neighbouring quadrate steel pipe column unit liftings are in place, by screwing epimere quadrate steel pipe column unit to the described crowbar force inserting described crowbar hole, complete being threaded between described quadrate steel pipe column unit.
2. a kind of quadrate steel pipe column be threaded according to claim 1, it is characterized in that: the inside of described splice sections is provided with threaded round steel pipe, adopt junction plate to be welded by the inwall of the outer wall of described round steel pipe and described quadrate steel pipe column unit, weld bead height is not less than the wall thickness of described quadrate steel pipe column unit; The number of plies of the described junction plate at described splice sections place is no less than 2 layers.
3. a kind of quadrate steel pipe column be threaded according to claim 1 and 2, it is characterized in that: the inwall of described quadrate steel pipe column unit and the outer wall of described round steel pipe tangent, tangent position adopts fillet weld seam, and weld bead height is not less than the wall thickness of described quadrate steel pipe column unit.
4. a kind of quadrate steel pipe column be threaded according to claim 2, it is characterized in that: the material of described round steel pipe is not less than square steel pipe to be spliced, and wall thickness is not less than described quadrate steel pipe column unit to be spliced, after machining screw, the net cross-sectional area of described round steel pipe and clean moment of inertia are not less than section area and the moment of inertia of described quadrate steel pipe column unit to be spliced.
5. a kind of quadrate steel pipe column be threaded according to claim 2, is characterized in that: the described round steel pipe in the described square steel pipe unit of epimere is provided with internal thread, and the described round steel pipe in the described square steel pipe unit of hypomere is provided with external screw thread.
6. a kind of quadrate steel pipe column be threaded according to claim 1, it is characterized in that: the corresponding position of described splice sections is provided with the bolt pre-manufactured hole passed in order to splice sections high-strength bolt, after neighbouring described quadrate steel pipe column unit threaded engagement, insert described splice sections high-strength bolt at described bolt pre-manufactured hole place and adjacent described round steel pipe pole unit is fixed further.
7. a kind of quadrate steel pipe column be threaded according to claim 6, is characterized in that: described square steel pipe unit and the tangent place of described round steel pipe are provided with described bolt pre-manufactured hole.
8. a kind of quadrate steel pipe column be threaded according to claim 1, is characterized in that: described crowbar hole is arranged in pairs along relative tube wall; It is 2 right that described crowbar hole is at least offered, and offering of often pair of described crowbar hole is highly different.
9. a kind of quadrate steel pipe column be threaded according to claim 1, is characterized in that: described crowbar hole after described crowbar is extracted out, with the high-strength bolt filling perforation of crowbar hole.
10. a construction method for the quadrate steel pipe column be threaded, is characterized in that, comprises the following steps:
Step 1: by place for the quadrate steel pipe column unit lifting of epimere, one or more crowbar is inserted corresponding crowbar hole;
Step 2: exert a force to described crowbar, screws epimere quadrate steel pipe column unit;
Step 3: neighbouring described quadrate steel pipe column is fixedly connected with further by high-strength bolt;
Step 4: extract described crowbar out, and replenish described crowbar hole with high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814449.6A CN105317167B (en) | 2015-11-19 | 2015-11-19 | The quadrate steel pipe column and construction method of a kind of threaded connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814449.6A CN105317167B (en) | 2015-11-19 | 2015-11-19 | The quadrate steel pipe column and construction method of a kind of threaded connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317167A true CN105317167A (en) | 2016-02-10 |
| CN105317167B CN105317167B (en) | 2018-01-09 |
Family
ID=55245402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510814449.6A Expired - Fee Related CN105317167B (en) | 2015-11-19 | 2015-11-19 | The quadrate steel pipe column and construction method of a kind of threaded connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105317167B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759890A (en) * | 2016-12-28 | 2017-05-31 | 山东杭萧钢构有限公司 | A kind of attachment structure of many high level finished steel square tube posts at girder steel |
| CN107100269A (en) * | 2016-11-17 | 2017-08-29 | 中通钢构股份有限公司 | A kind of node of steel pipe intercolumniation connection of band splicing sleeve pipe and preparation method thereof |
| CN108086476A (en) * | 2017-12-20 | 2018-05-29 | 中国恩菲工程技术有限公司 | Box steel column and its joining method |
| CN113001103A (en) * | 2019-12-20 | 2021-06-22 | 郑州宏达汽车工业有限公司 | Rapid tank body assembling method for powder material transport vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207769A (en) * | 1994-01-19 | 1995-08-08 | Masami Nakao | Joining structure for column to column |
| WO1996018826A1 (en) * | 1994-12-16 | 1996-06-20 | Neil Anthony Piccinin | Turnbuckle spigot assembly |
| JPH09317008A (en) * | 1996-06-03 | 1997-12-09 | Shimizu Corp | Joint structure of filled steel tube concrete columns |
| JP2005351412A (en) * | 2004-06-11 | 2005-12-22 | Jfe Steel Kk | Connection method for steel pipes |
| JP2009108631A (en) * | 2007-10-31 | 2009-05-21 | Takenaka Komuten Co Ltd | Beam-column joint structure |
| CN103806669A (en) * | 2013-12-24 | 2014-05-21 | 大立建设集团有限公司 | Construction method for H-type steel stiff column with cross fracture surface |
| CN205100434U (en) * | 2015-11-19 | 2016-03-23 | 山东大学 | Threaded connection's square steel tubular column |
-
2015
- 2015-11-19 CN CN201510814449.6A patent/CN105317167B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207769A (en) * | 1994-01-19 | 1995-08-08 | Masami Nakao | Joining structure for column to column |
| WO1996018826A1 (en) * | 1994-12-16 | 1996-06-20 | Neil Anthony Piccinin | Turnbuckle spigot assembly |
| JPH09317008A (en) * | 1996-06-03 | 1997-12-09 | Shimizu Corp | Joint structure of filled steel tube concrete columns |
| JP2005351412A (en) * | 2004-06-11 | 2005-12-22 | Jfe Steel Kk | Connection method for steel pipes |
| JP2009108631A (en) * | 2007-10-31 | 2009-05-21 | Takenaka Komuten Co Ltd | Beam-column joint structure |
| CN103806669A (en) * | 2013-12-24 | 2014-05-21 | 大立建设集团有限公司 | Construction method for H-type steel stiff column with cross fracture surface |
| CN205100434U (en) * | 2015-11-19 | 2016-03-23 | 山东大学 | Threaded connection's square steel tubular column |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100269A (en) * | 2016-11-17 | 2017-08-29 | 中通钢构股份有限公司 | A kind of node of steel pipe intercolumniation connection of band splicing sleeve pipe and preparation method thereof |
| CN106759890A (en) * | 2016-12-28 | 2017-05-31 | 山东杭萧钢构有限公司 | A kind of attachment structure of many high level finished steel square tube posts at girder steel |
| CN108086476A (en) * | 2017-12-20 | 2018-05-29 | 中国恩菲工程技术有限公司 | Box steel column and its joining method |
| CN113001103A (en) * | 2019-12-20 | 2021-06-22 | 郑州宏达汽车工业有限公司 | Rapid tank body assembling method for powder material transport vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317167B (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106013517A (en) | Fabricated reinforced concrete shear wall and manufacturing method thereof | |
| CN105317167A (en) | Threaded-connection square steel pipe column and construction method | |
| CN105275095A (en) | Circular steel tube column in threaded connection and construction method | |
| CN202913682U (en) | Embedded wall connecting piece | |
| CN104405165B (en) | The assembled mixing station storage bin partition wall of a kind of repeatable utilization and construction method thereof | |
| CN103015735A (en) | Construction method for planting wall lacing bars after pre-burying of sleeve assemblies | |
| JP5660803B2 (en) | Steel pipe pole joint structure and steel pipe pole joined thereby | |
| JP5785340B1 (en) | Manhole construction lining material | |
| CN202577347U (en) | Waterproof structure of basement steel formwork | |
| CN105421615A (en) | Prefabricated type shear wall horizontal bolt connecting structure | |
| CN205242675U (en) | Prefabricated assembled shear force wall horizontal bolt joint construction | |
| CN210483138U (en) | Assembled temporary house | |
| CN204571267U (en) | Novel wall connecting piece device | |
| CN203603253U (en) | Detachable steel corbel structure on reinforced concrete column | |
| CN205100376U (en) | Threaded connection's circular steel tube post | |
| CN107447975A (en) | Exterior wall scaffold tapered cup nut wall-connecting piece | |
| CN212561934U (en) | Novel connecting device for avoiding collision between wire pipe and composite floor truss rib | |
| CN205100434U (en) | Threaded connection's square steel tubular column | |
| CN206607880U (en) | A kind of unidirectional detachable split bolt | |
| CN216865483U (en) | A joint device for rapid positioning and fixing of steel components in light steel structure workshops | |
| CN205369524U (en) | Many high -rise building of steel construction side pipe concrete column building site concatenation node | |
| CN205444743U (en) | Novel joint construction of prefabricated staircase and stair railing pole setting | |
| CN104612166B (en) | The combination supporting device of a kind of supporting hole wall and method for protecting support | |
| CN203905441U (en) | Wall attaching tying part for scaffold | |
| CN204983655U (en) | Reserved pipe cover of floor poling hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20201119 |