CN110847498A - Built-in section steel column fixing system and application construction method thereof - Google Patents
Built-in section steel column fixing system and application construction method thereof Download PDFInfo
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- CN110847498A CN110847498A CN201911109844.9A CN201911109844A CN110847498A CN 110847498 A CN110847498 A CN 110847498A CN 201911109844 A CN201911109844 A CN 201911109844A CN 110847498 A CN110847498 A CN 110847498A
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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Abstract
The invention relates to a built-in section steel column fixing system and an application construction method thereof. The built-in section steel column fixing system comprises a column base foundation, a connecting rod, a pre-buried steel plate and a column foot plate. A foundation pit is formed in the column base foundation, and a fixing net is laid in the foundation pit; one end of the connecting rod is connected with the fixed net, and the other end of the connecting rod penetrates through the embedded steel plate and is connected with the embedded steel plate; the column foot plate is arranged in parallel with the embedded steel plate, a connecting hole is formed in the column foot plate, and the connecting rod penetrates through the embedded steel plate, penetrates through the connecting hole and is connected with the column foot plate; and a slurry layer is filled between the embedded steel plate and the column foot plate. By adopting the fixing system, the positioning accuracy of the steel column is improved; the slurry layer is directly filled in the embedded steel plate and the column foot plate, so that the compactness of the embedded steel plate and the column foot plate is enhanced, the possibility of deviation of the steel column is reduced, and the horizontal accuracy is improved. In addition, the application and construction method of the built-in section steel column fixing system is simple in steps, convenient to operate and suitable for popularization and use.
Description
Technical Field
The invention relates to the field of building construction, in particular to a built-in section steel column fixing system and an application construction method thereof.
Background
With the development of the building industry and the maturity of the building technology, super high-rise buildings are emerging continuously, and the requirements on the super high-rise building structure are higher and higher due to the consideration of safety. The Steel Reinforced Concrete (SRC) structure, i.e. the combination formed by arranging the steel sections in the reinforced concrete structure, can make the deformation resistance of the member stronger, the earthquake resistance better and the ductility obviously improved compared with the reinforced concrete structure under the same member section condition, therefore, the application of the steel reinforced column in the super high-rise project is very wide.
The built-in section steel column needs to be fixed before concrete pouring, generally, a built-in section steel column base is manufactured by digging a 700mm deep pit below the bottom elevation of a bottom plate and pouring concrete to serve as a section steel column foundation, a steel column embedded plate is fixed with the foundation through an embedded anchor bolt, a steel column base plate is connected with the bottom embedded plate through a bolt, and a gap between the base plate and the embedded plate is filled through C40 non-shrinkage fine-stone concrete or scrap iron mortar.
However, the gap between the column foot plate and the buried plate is filled by C40 non-shrinkage fine-grained concrete or iron-scrap mortar, and the accurate positioning of the steel column cannot be guaranteed.
Disclosure of Invention
Based on this, it is necessary to provide a built-in section steel column fixing system capable of ensuring accurate positioning and an application construction method thereof for solving the problem that accurate positioning of a steel column cannot be ensured.
An internal section steel column securement system, comprising:
the column base foundation is provided with a foundation pit, and a fixing net is laid in the foundation pit;
one end of the connecting rod is connected with the fixed net, and the other end of the connecting rod penetrates through the embedded steel plate and is connected with the embedded steel plate;
the column foot plate is arranged in parallel with the embedded steel plate, a connecting hole is formed in the column foot plate, and the connecting rod penetrates through the embedded steel plate, penetrates through the connecting hole and is connected with the column foot plate;
and a slurry layer is filled between the embedded steel plate and the column foot plate.
In one embodiment, the connecting rod is connected with the column foot plate through the adjusting piece.
In one embodiment, the connecting rod further comprises a fastener, the fastener and the adjusting piece are respectively positioned at two opposite sides of the column foot plate, and the fastener is connected with the connecting rod.
In one embodiment, the connecting rod is an anchor bolt, the adjusting piece and the fastener are both provided with holes, and the holes are internally provided with threads matched with the bolts
In one embodiment, the number of the connecting rods is at least two, and the two connecting rods are symmetrically arranged around the center of the column foot plate.
In one embodiment, the connecting rod comprises a first connecting section and a second connecting section connected at an angle.
In one embodiment, the projection of the column foot plate on the embedded steel plate is positioned in the embedded steel plate.
In one embodiment, the steel column further comprises a support rod, one end of the support rod is connected with the built-in section steel column, and the other end of the support rod is connected with the column base foundation.
In one embodiment, the number of the support rods is two, and the two support rods are symmetrically arranged on two sides of the built-in section steel column.
The application and construction method of the built-in section steel column fixing system comprises the following steps:
excavating at the column base foundation to form a foundation pit, and paving a fixed net in the foundation pit;
connecting the connecting rod with the fixed net according to the fixed position of the built-in section steel column;
penetrating the connecting rod through an embedded steel plate and connecting the connecting rod with the embedded steel plate;
pouring concrete on the column base foundation;
hoisting the built-in section steel column to enable the connecting rod to penetrate through the column foot plate and be connected with the column foot plate, so that the built-in section steel column is fixed;
and filling slurry between the embedded steel plate and the column foot plate to finish the construction of fixing the built-in section steel column.
When the built-in section steel column fixing system is applied, the built-in section steel column fixing system is connected with the embedded steel plate through the column foot plate, and the built-in section steel column is fixed. Through laying the fixed net in the foundation ditch for the connecting rod can select corresponding connecting point to be connected with the fixed net according to the position of built-in shaped steel post, makes things convenient for the location of connecting rod, has improved the precision that the steel column takes one's place. Meanwhile, the slurry layer is directly filled in the embedded steel plate and the column foot plate, so that the compactness of the embedded steel plate and the column foot plate is enhanced, the possibility of deviation of the steel column is reduced, and the horizontal accuracy is improved. In addition, the application and construction method of the built-in section steel column fixing system is simple in steps, convenient to operate and suitable for popularization and use.
Drawings
FIG. 1 is an elevation view of an embodiment of an internal section steel column securement system.
FIG. 2 is a top view of a portion of the structure of an embodiment of an internal section steel column securement system.
FIG. 3 is a flow diagram of an embodiment of an internal section steel column securement system.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
As shown in fig. 1, an embodiment of an internal section steel column fixing system 1 includes a column foot foundation 10, a connecting rod 12, an embedded steel plate 14, and a column foot plate 16. A foundation pit 100 is arranged on the column base 10, and a fixing net 102 is laid in the foundation pit 100; one end of the connecting rod 12 is connected with the fixed net 102, and the other end of the connecting rod passes through the embedded steel plate 14 and is connected with the embedded steel plate 14; the column foot plate 16 is arranged in parallel with the embedded steel plate 14, the column foot plate 16 is provided with a connecting hole, and the connecting rod 12 penetrates through the embedded steel plate 14, then penetrates through the connecting hole and is connected with the column foot plate 16; and a slurry layer 18 is filled between the embedded steel plate 14 and the column foot plate 16.
When the fixing system 1 for the built-in section steel column is applied, the fixing system is connected with the embedded steel plate 14 through the column foot plate 16, and the fixing of the built-in section steel column 2 is achieved. By laying the fixing net 102 in the foundation pit 100, the connecting rod 12 can select a corresponding connecting point to be connected with the fixing net 102 according to the position of the built-in section steel column 2, so that the connecting rod 12 is conveniently positioned, and the accuracy of positioning the steel column 2 is improved. Meanwhile, the slurry layer 18 is directly filled in the embedded steel plate 14 and the column foot plate 16, so that the compactness of the embedded steel plate 14 and the column foot plate 16 is enhanced, the possibility of deviation of the steel column 2 is reduced, and the horizontal accuracy is improved.
The column foot foundation 10 is used for providing a foundation for fixing the steel column 2, after the fixing position of the steel column 2 is determined, a foundation pit 100 is excavated according to the position to be fixed of the steel column 2, and after the foundation pit 100 is constructed, a fixing net 102 is laid in the foundation pit 100. The fixed net 102 is used for being connected with the connecting rod 12, and the connecting rod 12 can be selected to be connected with the fixed net 102 at a corresponding position according to the position to be fixed of the steel column 2, so that the accuracy of positioning the steel column 2 is improved. In this embodiment, the connecting rod 12 is an anchor bolt, and the fixing net 102 is a single-layer bidirectional reinforcing mesh with a diameter of 10mm and a distance of 150 mm. Further, as shown in fig. 1, in the present embodiment, the connecting rod 12 includes a first connecting section and a second connecting section which are connected at an angle. The first connecting section is connected with the reinforcing steel bar net piece at the bottom of the foundation pit 100, and the first connecting section is parallel to the reinforcing steel bar net piece, so that the first connecting section and the reinforcing steel bar net piece have a larger contact area, a plurality of connection points of the first connecting section and the reinforcing steel bar net piece can be realized, and the connection strength of the connecting rod 12 and the reinforcing steel bar net piece is improved. The angle between the first connecting section and the second connecting section can be selected according to actual conditions, for example, the first connecting section can be perpendicular to the second connecting section. In addition, in the present embodiment, the connecting rod 12 and the fixing net 102 are connected by welding.
The connecting rod 12 is welded with the fixing net 102 to realize preliminary positioning, and then the connecting rod 12 is connected with the embedded steel plate 14, wherein the connecting rod 12 penetrates the embedded steel plate 14 from the lower part of the embedded steel plate 14 and extends out of the embedded steel plate 14. The embedded steel plate 14 is used for being connected with a column foot plate 16 of the built-in section steel column 2, and further fixing of the steel column 2 is achieved. In this embodiment, pre-buried steel sheet 14 is welded connection with connecting rod 12, and after the pre-buried steel sheet 14 should pass through the further accurate location of theodolite before welding with connecting rod 12, the side can be executed welding to guarantee the accurate nature of steel column 2 location.
The column foot plate 16 is provided with a connecting hole, the connecting rod 12 extending out of the embedded steel plate 14 penetrates into the column foot plate 16 from the lower part of the column foot plate 16 and extends out of the column foot plate 16, namely, one end of the connecting rod 12 is connected with the fixed net 102, and the other end of the connecting rod sequentially penetrates through the embedded steel plate 14 and the column foot plate 16 from bottom to top. As shown in fig. 2, in the present embodiment, the projection of the toe board 16 on the embedded steel plate 14 is located inside the embedded steel plate 14. That is, the area of the embedded steel plate 14 is larger than that of the toe plate 16, and the force applied to the embedded steel plate 14 can be dispersed when the steel column 2 is fixed. In the present embodiment, the embedded steel plate 14 and the toe plate 16 are both square, and the side length of the embedded steel plate 14 is 300mm wider than that of the toe plate 16.
Referring to fig. 1 and fig. 2, in the present embodiment, the number of the connecting rods 12 is at least two, and the two connecting rods 12 are symmetrically disposed around the center of the toe board 16. That is, two connection holes are formed in the toe plate 16, and the two connection holes are located on opposite sides of the toe plate 16, respectively. Set up a plurality of connecting rods 12, can improve the intensity of connecting, be favorable to strengthening the fixed stability of steel column.
Further, in this embodiment, the internal section steel column fixing system 1 further includes an adjusting member 20, and the connecting rod 12 is connected to the toe plate 16 through the adjusting member 20. The adjusting member 20 can adjust the connecting position of the toe plate 16 on the connecting rod 12, thereby adjusting the positioning accuracy of the steel column 2. In this embodiment, the connecting rod 12 is a bolt and the adjusting member 20 is an adjusting nut, which is matched with the bolt. The perpendicularity of the steel column 2 can be adjusted by adjusting the two adjusting nuts on the two connecting rods 12. For example, when the steel column 2 does not reach the set verticality, the adjusting nut can be rotated to move upwards or downwards along the bolt, so as to change the levelness of the toe board 16, and further adjust the verticality of the steel column 2.
As shown in fig. 1, in the present embodiment, the built-in section steel column fixing system 1 further includes a fastening member 22, the fastening member 22 and the adjusting member 20 are respectively located at opposite sides of the toe plate 16, and the fastening member 22 is connected to the connecting rod 12. The fastening member 22 is used for reinforcing the connection between the embedded steel plate 14 and the connecting rod 12. As shown in fig. 1, the adjusting member 20 is located below the toe board 16, and the fastening member 22 is located above the toe board 16, so that after the adjusting member 20 and the fastening member 22 are fixed to the connecting rod 12, the embedded steel plate 14 can be fixed between the adjusting member 20 and the fastening member 22, and the steel column 2 can be fixed. In this embodiment, the connecting rod 12 is an anchor bolt, and the fastening member 22 is a double nut having a thread matching the anchor bolt.
As shown in fig. 1, in the present embodiment, the built-in section steel column fixing system 1 further includes a support rod 24, and one end of the support rod 24 is connected to the built-in section steel column 2, and the other end is connected to the column foot base 10. The support rods 24, the steel columns 2 and the column foot foundations 10 form a triangular structure, so that the stability of fixing the steel columns 2 can be improved. Further, in the present embodiment, the number of the support rods 24 is two, and the two support rods 24 are symmetrically disposed on both sides of the built-in section steel column 2. The support rod 24 is L75 x 5 equal angle steel and is connected with the steel column 2 in a welding way.
The slurry layer 18 is filled between the embedded steel plate 14 and the column foot plate 16, the slurry layer 18 is used for filling a gap between the embedded steel plate 14 and the column foot plate 16, the compactness between the embedded steel plate 14 and the column foot plate 16 is enhanced, the possibility of deviation of the steel column 2 is reduced, and the horizontal accuracy is improved. In this embodiment, the material of the slurry layer 18 is C40 non-shrink grouting,
the application and construction method of the above-described built-in section steel column fixing system 1 will be described in detail below. As shown in fig. 1 to 3, an application and construction method of the built-in section steel column fixing system 1 according to an embodiment includes the following steps:
step S300, excavating at the column base 10 to form a foundation pit 100, and paving a fixing net 102 in the foundation pit 100. After the earthwork is excavated to the bottom elevation of the bottom plate, the positioning and the paying-off are carried out, and the earthwork of the column foot foundation 10 is excavated to form a foundation pit 100. The foundation pit 100 is excavated for slope making, the slope toe is 45 degrees, the depth is 300mm, the width of the bottom edge is +800mm of the width of the built-in section steel column 2, namely, the left side and the right side are respectively added with 400 mm. And then, constructing a foundation mat layer, wherein the thickness of the foundation mat layer is 150 mm. Then, constructing a waterproof and fine stone concrete protective layer of the coiled material, wherein the thickness is 700 mm. It should be noted that the slope excavation, the foundation cushion layer construction, and the coil waterproof and fine aggregate concrete protective layer construction are all conventional methods in the field, and are not described again here. After the construction is completed, a fixing net 102 is laid in the foundation pit 100. In this embodiment, the fixing net 102 is a single-layer bidirectional reinforcing mesh with a diameter of 10mm and a pitch of 150 mm.
Step S302, connecting the connecting rod 12 with the fixed net 102 according to the fixed position of the built-in section steel column 2. In the present embodiment, the connecting rod 12 is an anchor bolt. The anchor bolt passes through reinforcing bar net piece welding preliminary fixed position, and simultaneously, the anchor bolt should guarantee sufficient anchor length to pass embedded steel plate 14 and toe board 16.
And step S304, enabling the connecting rod 12 to penetrate through an embedded steel plate 14 and be connected with the embedded steel plate 14. The connecting rod 12 is connected with the embedded steel plate 14 in a welding mode, penetrates into the embedded steel plate 14 from the lower portion of the embedded steel plate 14 and extends out of the embedded steel plate 14, and after the embedded steel plate 14 is further accurately positioned through a theodolite before being welded, welding can be conducted.
Step S306, concrete casting is performed on the column foot foundation 10. Concrete is poured into the steel column base foundation pit 100, finished product protection is paid attention to during pouring, the embedded steel plate 14 is strictly prevented from being damaged, the test of plane positioning of the embedded steel plate 14 is kept during pouring, and positioning accuracy is guaranteed.
Step S308, hoisting the built-in section steel column 2, so that the connecting rod 12 passes through the column foot plate 16 and is connected with the column foot plate 16, thereby fixing the built-in section steel column 2. The verticality is calibrated by the theodolite in the hoisting process, and the verticality is temporarily fixed by the supporting rod 24. The steel column is connected with the embedded steel plate 14 through the column foot plate 16, and then fixed installation is achieved. In this embodiment, the steel column 2 is a base section steel column having a length of about 2800 mm.
Step S310, filling slurry between the embedded steel plate 14 and the toe plate 16, and completing the construction of fixing the built-in section steel column 2. After the steel column 2 is hoisted in place, the gap between the column foot plate 16 and the embedded steel plate 14 is filled by the non-shrinkage grouting material, and the horizontal accuracy is improved.
The application construction method of the built-in section steel column fixing system 1 enables the steel column foundation pit to be changed from 700mm to 300mm, so that foundation pit supporting measures are omitted, workload is reduced, construction difficulty is reduced, construction progress is accelerated, and construction cost is saved. Meanwhile, the reinforcing mesh is arranged in the foundation pit, so that the anchor bolts are conveniently positioned, and the accuracy of positioning the steel column is improved. In addition, the grouting material is filled between the embedded steel plate 14 and the column foot plate 16, so that the compactness of the embedded steel plate 14 and the column foot plate 16 is enhanced, the possibility of deviation of the steel column 2 is reduced, and the horizontal accuracy of positioning the steel column 2 is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A built-in section steel column securement system, comprising:
the column base foundation is provided with a foundation pit, and a fixing net is laid in the foundation pit;
one end of the connecting rod is connected with the fixed net, and the other end of the connecting rod penetrates through the embedded steel plate and is connected with the embedded steel plate;
the column foot plate is arranged in parallel with the embedded steel plate, a connecting hole is formed in the column foot plate, and the connecting rod penetrates through the embedded steel plate, penetrates through the connecting hole and is connected with the column foot plate;
and a slurry layer is filled between the embedded steel plate and the column foot plate.
2. The internal section column securement system of claim 1, further comprising an adjustment member, wherein the connecting rod is connected to the toe plate via the adjustment member.
3. The internal section column securement system of claim 2, further comprising fasteners, wherein the fasteners and the adjustment members are located on opposite sides of the toe plate, respectively, and wherein the fasteners are coupled to the connecting rod.
4. The system according to claim 3, wherein the connecting rod is an anchor bolt, the adjusting member and the fastening member are each provided with a hole, and the holes are provided with threads matching with the bolts.
5. The internal section column securement system as recited in claim 1, wherein the number of tie rods is at least two, the two tie rods being symmetrically disposed about the center of the toe plate.
6. The internal section column securement system of claim 5, wherein the connecting rod comprises first and second connecting segments that are angularly connected.
7. The internal section steel column fixing system as claimed in claim 1, wherein the projection of the toe plate on the embedded steel plate is located inside the embedded steel plate.
8. The internal section column fixing system as recited in claim 1, further comprising a support rod, one end of the support rod being connected to the internal section column and the other end being connected to the column foot base.
9. The internal section column fixing system as recited in claim 1, wherein the number of the support rods is two, and the two support rods are symmetrically disposed at both sides of the internal section column.
10. A method of applying the built-in section steel column fixing system according to any one of claims 1 to 9, comprising the steps of:
excavating at the column base foundation to form a foundation pit, and paving a fixed net in the foundation pit;
connecting the connecting rod with the fixed net according to the fixed position of the built-in section steel column;
penetrating the connecting rod through an embedded steel plate and connecting the connecting rod with the embedded steel plate;
pouring concrete on the column base foundation;
hoisting the built-in section steel column to enable the connecting rod to penetrate through the column foot plate and be connected with the column foot plate, so that the built-in section steel column is fixed;
and filling slurry between the embedded steel plate and the column foot plate to finish the construction of fixing the built-in section steel column.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911109844.9A CN110847498A (en) | 2019-11-14 | 2019-11-14 | Built-in section steel column fixing system and application construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911109844.9A CN110847498A (en) | 2019-11-14 | 2019-11-14 | Built-in section steel column fixing system and application construction method thereof |
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| CN110847498A true CN110847498A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894203A (en) * | 2020-06-24 | 2020-11-06 | 中铁五局集团成都工程有限责任公司 | Construction process for section steel concrete of upper cover metro vehicle |
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| KR950018959A (en) * | 1993-12-28 | 1995-07-22 | 미야자끼 아끼라 | Steel frame settlement structure |
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