CN115467469A - Steel structure column base and construction method thereof - Google Patents
Steel structure column base and construction method thereof Download PDFInfo
- Publication number
- CN115467469A CN115467469A CN202211319344.XA CN202211319344A CN115467469A CN 115467469 A CN115467469 A CN 115467469A CN 202211319344 A CN202211319344 A CN 202211319344A CN 115467469 A CN115467469 A CN 115467469A
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- China
- Prior art keywords
- connecting plate
- steel structure
- adjusting nut
- structure column
- foundation
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- 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
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
A steel structure column base and a construction method thereof mainly comprise an adjusting nut, wherein the adjusting nut is in threaded connection with an anchor bolt, a connecting plate freely penetrates through the anchor bolt and is leveled and limited through the adjusting nut, a shear key is fixed at the lower end of the connecting plate, and a concrete foundation, the adjusting nut, the connecting plate and the shear key are cast into a whole; and the steel structure column base with the bottom plate penetrates through the foundation bolt and is locked on the connecting plate through the nut. According to the steel structure column base and the construction method thereof, the shear keys are poured into the concrete foundation at one time, so that the direct transmission of the shear force is realized.
Description
Technical Field
The invention relates to a steel structure column base, in particular to a steel structure column base and a construction method thereof.
Background
The steel construction is in order effectively to resist horizontal force, sets up the shear key bottom the steel column usually, thereby transmit horizontal force to the concrete foundation through the shear key and offset the shear force. In the prior art, a shear resistant pit is reserved on a concrete foundation, a steel plate is welded at the bottom of a steel column, and a shear resistant key is welded below the steel plate; in the installation process, the shear keys correspond to the reserved shear pits, and after the installation is in place, the secondary grouting material is poured to fill the shear pits tightly, so that the shear resistance is realized. As shown in detail in fig. 4-5.
The above patent has technical problems:
1) In order to ensure effective force transmission of the secondary grouting layer, the distance between the steel structure column base and the primary face of the concrete foundation is only 50-100mm, so that grouting is difficult during construction, whether the shear pit is filled with secondary grouting material or not can not be observed, and construction quality cannot be guaranteed.
2) After the concrete foundation is poured, the surface of the concrete foundation cannot be completely leveled due to the shrinkage characteristic of the concrete; when the steel column is installed, a secondary pouring layer is not poured, a gap of 50-100mm is formed between the bottom plate and the primary surface of the concrete foundation, and under the condition that an accurate leveling device is not arranged, absolute verticality of the steel column cannot be guaranteed on a construction site, so that the steel column can bear certain additional bending moment after being installed, and the stress of the steel column is not good.
3) The shear keys are arranged in the secondary pouring layer, so that the horizontal force of the steel column is transmitted to the secondary pouring layer through the shear keys and then transmitted to the concrete foundation, force transmission is indirect, and potential safety hazards exist.
The patent with application number "202122496065.8" discloses a steel tube concrete column base shear key device, which directly integrates a steel tube belt bottom plate and a steel tube shear key and fixes the steel tube belt bottom plate and the steel tube shear key on a foundation (see section 22 of the embodiment in detail), and then concrete is poured. According to the method of the reference, the crane must always lift the steel column for 7 days, and then the crane can release the steel column, so that the weight of the steel column is completely fallen on the concrete member.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a steel structure column base and a construction method thereof, wherein a shear key is poured into a concrete foundation at one time, so that the direct transfer of shear force is realized.
The invention also adopts the adjusting nut, can realize the absolute leveling of the horizontal plane of the shear key and avoid generating additional load.
In addition, the top steel plate with the shear resistance is also provided with an air vent, when concrete is poured, whether the concrete in the shear key is filled compactly or not can be judged by observing whether the concrete overflows from the air vent, the technical problem (1) is solved, the technical means is combined with the function of the adjusting nut, and the technical problem (2) is solved
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a steel structure column base comprises an adjusting nut, the adjusting nut is in threaded connection with an anchor bolt, a connecting plate freely penetrates through the anchor bolt and is leveled and limited through the adjusting nut, a shear key is fixed at the lower end of the connecting plate, and a concrete foundation, the adjusting nut, the connecting plate and the shear key are poured into a whole.
And the steel structure column base with the bottom plate penetrates through the foundation bolt and is locked on the connecting plate through the nut.
The connecting plate and the adjusting nut are welded into a whole. The bolt can be loosened after the working time is long, and the bolt plays a role in preventing loosening when welded together.
The bottom plate and the connecting plate are welded into a whole. The bottom plate is connected with the connecting plate through foundation bolts, and the bottom plate and the connecting plate are welded together to play a role in preventing looseness.
A construction method of a steel structure column base is characterized in that a secondary pouring layer and a shear resistant pit are omitted, a shear resistant key (5) and a steel structure column base (1) are separately arranged, and the shear resistant key is poured into a concrete foundation at one time.
A construction method of a steel structure column base comprises the following steps:
step 3, pouring a concrete foundation, and when concrete overflows from the overflow holes on the connecting plate, indicating that the concrete under the connecting plate is poured compactly;
and 6, mounting nuts on the foundation bolts on the bottom plate and screwing the foundation bolts.
In the step 2, the adjusting nut and the connecting plate can be fixed by welding; or, the anchor bolt at the upper end of the connecting plate is fixed by screwing a nut; when the fixing device is fixed through the nut, the fixing device can be taken down when the rear base plate is installed.
The invention relates to a steel structure column base and a construction method thereof, which have the following technical effects:
1) And a secondary pouring layer and a shear resistant pit are omitted, and the shear resistant key is poured into the concrete foundation at one time, so that the direct transfer of the shear force is realized.
2) Through being provided with adjusting nut, can ensure the accurate regulation of connecting plate height, ensure to install the steel construction column base no skew etc. above it.
3) And through being provided with the excessive thick liquid hole on the connecting plate, can ensure that concrete placement is closely knit under the steel sheet.
4) Compared with the patent with the application number of 202122496065.8, the key technical scheme of the application is that the shear key and the steel column are separately arranged, and the shear key is not directly welded at the bottom of the steel column any more. The shear key has the advantages that the shear key can be provided with the adjusting nut and the overflow hole, the adjusting nut enables the shear key to be easily adjusted to be in a horizontal state, the overflow hole enables the shear key directly embedded into the concrete foundation not to be separated from the concrete foundation due to shrinkage in the concrete hardening process, the steel plate on the upper portion of the shear key is enabled to be tightly attached to the concrete foundation, and force transmission is better. After the shear key is adjusted to the horizontality, after the concrete reaches the stress state, can directly put the steel column on the shear key and can guarantee the straightness that hangs down and the elevation of steel column, need not readjustment, avoid off-centre formation additional load and practice thrift the time limit for a project.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the connecting plate of the present invention.
Fig. 4 is a top view of the prior art.
Fig. 5 is a front view of the prior art.
In the figure: the concrete grouting structure comprises a steel structure column base 1, foundation bolts 2, adjusting nuts 3, a connecting plate 4, shear keys 5, a bottom plate 6, a grout overflow hole 7, a concrete foundation 8, a shear pit 9 and a secondary grouting layer 10.
Detailed Description
As shown in fig. 1 to 3, a steel structure column base comprises an anchor bolt 2, a thread with a required length is turned on the anchor bolt 2, and an adjusting nut 3 is in threaded connection with the anchor bolt 2 and is arranged at a proper height position on the anchor bolt 2. The bottom of the connecting plate 4 is welded with a shear key 5, and the connecting plate 4 is provided with a plurality of slurry overflow holes 7 and corresponding foundation bolt holes. The connecting plate 4 passes through the foundation bolt 2 through the foundation bolt hole and the lower end of the connecting plate is limited by the adjusting nut 3. The bottom of the steel structure column base 1 is provided with a bottom plate 6, corresponding foundation bolt holes are also formed in the bottom plate 6, the bottom end of the bottom plate 6 falls onto the connecting plate 4 after penetrating through the foundation bolt holes 2, and the foundation bolt 2 at the upper end of the bottom plate 6 is screwed up through nuts.
A construction method of a steel structure column base comprises the following steps:
step 3, pouring a concrete foundation 8, and when concrete overflows from the overflow holes 7 on the connecting plate 4, indicating that the concrete under the connecting plate 4 is poured compactly;
and 6, mounting nuts on the foundation bolts 2 on the bottom plate 6 and screwing.
Claims (6)
1. The utility model provides a steel construction column foot which characterized in that: the concrete foundation comprises an adjusting nut (3), the adjusting nut (3) is in threaded connection with an anchor bolt (2), a connecting plate (4) freely penetrates through the anchor bolt (2) and is leveled and limited through the adjusting nut (3), a shear key (5) is fixed at the lower end of the connecting plate (4), and a concrete foundation (8), the adjusting nut (3), the connecting plate (4) and the shear key (5) are poured into a whole; the steel structure column base (1) with the bottom plate (6) penetrates through the foundation bolt (2) and is locked on the connecting plate (4) through a nut.
2. The steel structure column shoe of claim 1, characterized in that: the connecting plate (4) and the adjusting nut (3) are welded into a whole.
3. The steel structure column shoe of claim 1, characterized in that: the bottom plate (6) and the connecting plate (4) are welded into a whole.
4. The construction method of a steel structure column shoe according to any one of claims 1 to 3, characterized in that: and (3) canceling a secondary pouring layer and a shear pit, separately arranging the shear key (5) and the steel structure column base (1), and pouring the shear key (5) into the concrete foundation at one time.
5. The construction method of the steel structure column base according to claim 4, comprising the following steps:
step 1, mounting an adjusting nut (3) on an anchor bolt (2), and mounting a connecting plate (4) welded with a shear key (5) on the anchor bolt (2);
step 2, adjusting the connecting plate (4) to a required elevation through the adjusting nut (3) and fixing the two;
step 3, pouring a concrete foundation (8), and when concrete overflows exist in the grout overflow holes (7) on the connecting plate (4), indicating that the concrete under the connecting plate (4) is poured compactly;
step 4, after the concrete foundation (8) reaches the required strength, hoisting the steel structure column base (1) welded with the bottom plate (6) to the connecting plate (4) through a crane;
step 5, the bottom plate (6) penetrates through the foundation bolt (2) and is connected with the connecting plate (4) in a welding mode;
and 6, mounting nuts on the foundation bolts (2) on the bottom plate (6) and screwing.
6. The construction method of the steel structure column base according to claim 5, characterized in that: in the step 2, the adjusting nut (3) and the connecting plate (4) can be fixed by welding; or the anchor bolts (2) at the upper end of the connecting plate (4) are screwed and fixed by nuts; when the rear base plate (6) is fixed by the nut, the rear base plate can be taken down when being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211319344.XA CN115467469A (en) | 2022-10-26 | 2022-10-26 | Steel structure column base and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211319344.XA CN115467469A (en) | 2022-10-26 | 2022-10-26 | Steel structure column base and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115467469A true CN115467469A (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211319344.XA Pending CN115467469A (en) | 2022-10-26 | 2022-10-26 | Steel structure column base and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303715A (en) * | 1999-11-18 | 2001-10-31 | Nippon Steel Composite Co Ltd | Metal tubular column, and reinforcing method thereof |
| CN102828577A (en) * | 2012-08-28 | 2012-12-19 | 上海勘测设计研究院 | Steel pipe column base connecting structure and mounting method thereof |
| CN105484290A (en) * | 2016-01-07 | 2016-04-13 | 惠生（南通）重工有限公司 | Tool for general assembly of land pipe gallery module |
| CN210013333U (en) * | 2019-04-08 | 2020-02-04 | 上海市城市建设设计研究总院（集团）有限公司 | Shear key disconnect-type steel construction hinged support |
| CN215406597U (en) * | 2021-03-30 | 2022-01-04 | 中建六局安装工程有限公司 | Steel structure column base embedded structure for complex node |
| CN217379241U (en) * | 2022-05-13 | 2022-09-06 | 中国有色金属工业西安勘察设计研究院有限公司 | Exposed steel structure column base |
-
2022
- 2022-10-26 CN CN202211319344.XA patent/CN115467469A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303715A (en) * | 1999-11-18 | 2001-10-31 | Nippon Steel Composite Co Ltd | Metal tubular column, and reinforcing method thereof |
| CN102828577A (en) * | 2012-08-28 | 2012-12-19 | 上海勘测设计研究院 | Steel pipe column base connecting structure and mounting method thereof |
| CN105484290A (en) * | 2016-01-07 | 2016-04-13 | 惠生（南通）重工有限公司 | Tool for general assembly of land pipe gallery module |
| CN210013333U (en) * | 2019-04-08 | 2020-02-04 | 上海市城市建设设计研究总院（集团）有限公司 | Shear key disconnect-type steel construction hinged support |
| CN215406597U (en) * | 2021-03-30 | 2022-01-04 | 中建六局安装工程有限公司 | Steel structure column base embedded structure for complex node |
| CN217379241U (en) * | 2022-05-13 | 2022-09-06 | 中国有色金属工业西安勘察设计研究院有限公司 | Exposed steel structure column base |
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