CN216892872U - Connecting structure of concrete frame beam steel bar and steel structure stiff column - Google Patents
Connecting structure of concrete frame beam steel bar and steel structure stiff column Download PDFInfo
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- CN216892872U CN216892872U CN202220110889.9U CN202220110889U CN216892872U CN 216892872 U CN216892872 U CN 216892872U CN 202220110889 U CN202220110889 U CN 202220110889U CN 216892872 U CN216892872 U CN 216892872U
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Abstract
The utility model discloses a connecting structure of a concrete frame beam reinforcing steel bar and a steel structure stiff column, which comprises a connecting butt strap and a connecting sleeve, wherein the connecting butt strap is transversely arranged on the outer side of a web plate of the steel structure stiff column and is arranged corresponding to an upper longitudinal reinforcing steel bar of the concrete frame beam to be connected, and the upper longitudinal reinforcing steel bar is welded with the connecting butt strap; the connecting sleeves are arranged on the outer sides of the webs of the steel structure stiff columns, the number of the connecting sleeves is consistent with that of the lower longitudinal steel bars of the concrete frame beams to be connected, and the connecting sleeves and the lower longitudinal steel bars are arranged in a one-to-one correspondence manner; and the lower longitudinal steel bar is inserted into the connecting sleeve to be fixedly connected. According to the utility model, the upper longitudinal steel bars of the connecting butt strap correspondingly connected with the concrete frame beam are arranged at the upper part of the stiffening column web, and the lower longitudinal steel bars of the connecting sleeve correspondingly connected with the concrete frame beam are arranged at the lower part of the stiffening column web, so that the operability of the complex steel beam-column joint steel bar connection is improved, the construction difficulty is reduced, and the structure safety is improved.
Description
Technical Field
The utility model relates to the field of building construction, in particular to a connecting structure of concrete frame beam steel bars and a steel structure stiff column.
Background
The steel structure is added to the center of a traditional reinforced concrete structure column, and under the condition that the section of the structure column is not changed, the structural rigidity and strength are effectively improved. In recent years, the application of stiff structures in the building industry is more and more extensive, and the use of steel structures also causes difficulty in connecting and constructing steel bars at the nodes of beam columns.
At present, concrete frame beam reinforcement and steel construction strength nature column be connected, mainly adopt following mode, one kind is at the web trompil of steel construction post, and concrete frame beam reinforcement position can follow the trompil on the web when being located the steel column web, and the reinforcing bar passes the opposite side of anchor income post from the hole. However, the structural design provides that the open area of the steel structure is not more than 25%, and especially for the open holes on the box-type steel columns, the design unit only agrees to open two holes in the X, Y direction. The quantity and the size of trompil have been restricted, because the frame roof beam arrangement of reinforcement is more, the trompil can't guarantee the passing through of whole reinforcing bars. The other method is to weld the steel bar bent anchor and the steel column, the steel bar can be processed on site when being bent, the precision requirement is low, and the position of the steel bar can be adjusted according to the construction deviation on site. The disadvantage is that the welding work surface is usually below the platform, which causes difficulties in welding construction and quality acceptance. Meanwhile, the steel structure in the stiff column is thinner to the concrete surface (generally 200-250mm), which can cause the steel bars in the column to be too dense, and the quality defects such as honeycomb, cavity and the like are easy to generate when the concrete is poured. Especially, when the complex steel beam column node is connected with a stiff column simultaneously by multiple layers of beam reinforcements, for example, the upper and lower longitudinal reinforcements of a concrete frame beam are 2 rows or more, or 6 or more reinforcements in a single row, the gap of a field operation surface is narrow, the construction difficulty is high, and the connection quality of the reinforcements is difficult to ensure. Thus, there is a need for improvements and enhancements in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a connecting structure of concrete frame beam reinforcements and a steel structure stiff column, and solving the problems that the existing connecting mode of the concrete frame beam reinforcements and the steel structure stiff column is difficult to construct and the connecting quality is difficult to ensure.
The technical scheme adopted by the utility model for solving the technical problems is to provide a connecting structure of concrete frame beam steel bars and a steel structure stiff column, which comprises connecting butt straps and connecting sleeves, wherein the connecting butt straps are transversely arranged on the outer sides of web plates of the steel structure stiff column and are arranged corresponding to upper longitudinal steel bars of concrete frame beams to be connected, and the upper longitudinal steel bars are welded and connected with the connecting butt straps; the connecting sleeves are arranged on the outer sides of the webs of the steel structure stiff columns, the number of the connecting sleeves is consistent with that of the lower longitudinal steel bars of the concrete frame beams to be connected, and the connecting sleeves and the lower longitudinal steel bars are arranged in a one-to-one correspondence manner; and the lower longitudinal steel bar is inserted into the connecting sleeve to be fixedly connected.
Furthermore, the connecting butt strap is welded with the web of the steel structure stiff column, and the connecting butt strap is welded to the web of the steel structure stiff column according to the relative position of the upper longitudinal steel bars and the steel structure stiff column when the steel structure stiff column is manufactured.
Furthermore, reinforcing ribs are arranged on the connecting butt strap, and are welded with the connecting butt strap and the web plate of the steel structure stiff column; the reinforcing ribs are arranged in a staggered mode with the upper longitudinal steel bars.
Further, when the upper longitudinal steel bars of the concrete frame beam are arranged in a single row, the upper surface of the connecting butt strap is aligned with the lower surface of the upper longitudinal steel bars, and the upper longitudinal steel bars are in lap joint with the upper surface of the connecting butt strap; when the upper longitudinal steel bars of the concrete frame beam are arranged in two rows, the connecting butt strap is positioned between the two rows of upper longitudinal steel bars, and the upper row of the upper longitudinal steel bars is in lap joint welding with the upper surface of the connecting butt strap; and the lower row of the upper longitudinal steel bars is in lap joint welding with the lower surface of the connecting butt strap.
Furthermore, the welding length of the upper longitudinal steel bar and the connecting butt strap is more than or equal to 5d, and d is the diameter of the upper longitudinal steel bar.
Furthermore, the connecting sleeve is welded with the web plate of the steel structure stiff column, and the connecting sleeve is welded to the web plate of the steel structure stiff column according to the relative position of the lower longitudinal steel bar and the steel structure stiff column when the steel structure stiff column is manufactured.
Further, the connecting sleeve is a straight thread sleeve, and the steel bar thread head of the lower longitudinal steel bar is in threaded connection with the connecting sleeve.
Compared with the prior art, the utility model has the following beneficial effects: according to the connecting structure of the concrete frame beam reinforcing steel bars and the steel structure stiffening column, the connecting butt strap is arranged on the upper portion of the stiffening column web plate and correspondingly connected with the upper longitudinal reinforcing steel bars of the concrete frame beam, and the connecting sleeve is arranged on the lower portion of the stiffening column web plate and correspondingly connected with the lower longitudinal reinforcing steel bars of the concrete frame beam, so that the operability of complex steel beam column node reinforcing steel bar connection is improved, the construction difficulty is reduced, the structure safety is improved, and the construction cost is saved.
Drawings
Fig. 1 is a schematic view of a connection structure of concrete frame beam reinforcements and steel structure stiffening columns according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line 1-1 of FIG. 1;
fig. 3 is a cross-sectional view 2-2 of fig. 2.
In the figure:
1. a steel structural stiffening column; 2. a concrete frame beam; 3. upper longitudinal steel bars; 4. connecting the butt strap; 5. reinforcing ribs; 6. lower longitudinal steel bars; 7. and connecting the sleeve.
Detailed Description
The utility model is further described below with reference to the figures and examples.
Fig. 1 is a schematic view of a connection structure between a reinforcing bar of a concrete frame beam and a steel-structured stiff column according to an embodiment of the present invention.
Referring to fig. 1 to 3, the connection structure of the concrete frame beam reinforcing steel bars and the steel structure stiff column according to the embodiment of the present invention includes a connection strap 4 and a connection sleeve 7, the connection strap 4 is transversely disposed at the outer side of the web plate of the steel structure stiff column 1 and is disposed corresponding to the upper longitudinal reinforcing steel bars 3 of the concrete frame beam 2 to be connected, and the upper longitudinal reinforcing steel bars 3 are welded to the connection strap 4; the connecting sleeves 7 are arranged on the outer sides of the webs of the steel structure stiff columns 1, the number of the connecting sleeves 7 is consistent with that of the lower longitudinal steel bars 6 of the concrete frame beams 2 to be connected, and the connecting sleeves 7 are arranged in one-to-one correspondence with the lower longitudinal steel bars 6; the lower longitudinal steel bar 6 is inserted into the connecting sleeve 7 for fixed connection.
Specifically, the connection butt strap 4 is welded to the web of the steel structure stiff column 1, and the connection butt strap 4 is welded to the web of the steel structure stiff column 1 according to the relative position of the upper longitudinal steel bars 3 and the steel structure stiff column 1 when the steel structure stiff column 1 is manufactured. The reliability of the connection butt strap 4 and the steel structure stiffness column 1 is ensured, and the field welding operation is reduced.
Preferably, the connecting butt strap 4 is provided with a reinforcing rib 5, and the reinforcing rib 5 is welded with the connecting butt strap 4 and the web plate of the steel structure stiff column 1; the reinforcing ribs 5 are multiple, and the reinforcing ribs 5 and the upper longitudinal steel bars 3 are arranged in a staggered mode.
Specifically, when the upper longitudinal reinforcements 3 of the concrete frame beam 2 are arranged in a single row, the upper surfaces of the connecting butt straps 4 are aligned with the lower surfaces of the upper longitudinal reinforcements 3, and the upper longitudinal reinforcements 3 are lap-welded to the upper surfaces of the connecting butt straps 4; when the upper longitudinal steel bars 3 of the concrete frame beam 2 are arranged in two rows, the connecting butt strap 4 is positioned between the two rows of the upper longitudinal steel bars 3, and the upper row of the upper longitudinal steel bars 3 is in lap welding with the upper surface of the connecting butt strap 4; the lower row of the upper longitudinal steel bars 3 is lap-welded with the lower surface of the connecting butt strap 4.
Specifically, the welding length of the upper longitudinal steel bar 3 and the connecting butt strap 4 is greater than or equal to 5d, and d is the diameter of the upper longitudinal steel bar 3.
Specifically, the connecting sleeve 7 is welded to the web of the steel structure stiff column 1, and the connecting sleeve 7 is welded to the web of the steel structure stiff column 1 according to the relative position of the lower longitudinal steel bars 6 and the steel structure stiff column 1 when the steel structure stiff column 1 is manufactured. The reliability of connection between the connecting sleeve 7 and the steel structure stiff column 1 is ensured, and field welding operation is reduced.
Preferably, the connecting sleeve 7 is a straight threaded sleeve, and the reinforcing steel bar thread of the lower longitudinal reinforcing steel bar 6 is in threaded connection with the connecting sleeve 7. And the welding operation on the spot is reduced.
The connection structure of the concrete frame beam steel bar and the steel structure stiff column of the embodiment of the utility model is characterized in that when in actual use:
the connection process of the connection strap 4 is as follows:
positioning: and (3) performing computer simulation arrangement three-dimensional lofting according to the width of the concrete frame beam 2 and the reinforcing bars of the concrete frame beam 2, and determining the accurate position of the connecting butt strap 4 on the steel structure stiffening column 1 according to the position of the upper longitudinal reinforcing steel bar 3. The elevation of the X, Y-oriented attachment strap 4 should differ by one major rib diameter.
And (4) welding the connection butt strap: according to construction drawings, paying off and welding a connection butt strap 4 on a web plate of the steel structure stiff column 1, and vertically arranging stiffening ribs 5 with the thickness of 20mm on the connection butt strap 4 at intervals of 200 mm. And (3) welding seams between the connecting butt strap 4 and the steel structure stiffness column 1 are I-grade welding seams, and welding seam flaw detection is performed before delivery. The length of the connecting butt strap 4 is 5d +20mm, and d is the diameter of the upper longitudinal steel bar 3. The quality of the used connecting butt strap 4 and the welding seam is checked and accepted, and the design requirement is ensured to be met.
Connecting the upper longitudinal steel bars 3: binding the steel bars of the concrete frame beam 2 into a steel bar framework according to the design requirements of a drawing, and penetrating 3 hoops in the near-node area in advance without binding; sinking the bound beam reinforcement framework into a beam template, and enabling the through reinforcement to bypass the rigid column, wherein the upper longitudinal reinforcement 3 which is required to be welded with the connecting butt strap 4 is simultaneously closely attached to and aligned with the connecting butt strap 4; the attaching length is more than or equal to 5 d; after the connection butt strap 4 is aligned with the upper longitudinal steel bar 3, spot welding is firstly carried out for fixation, and then two sides of the upper longitudinal steel bar 3 are welded in a double-sided mode. The welding length is not less than 5d, the width of the welding seam is not less than 0.6d, and the height of the welding seam is not less than 0.35 d. When the number of the upper longitudinal steel bars 3 is large, if the double-sided welding of the upper longitudinal steel bars 3 at the middle part is difficult, the width of the connecting butt strap 4 can be increased by 10d in advance, and the single-sided welding is changed.
The connecting sleeve 7 is connected as follows:
selecting a type: a connecting sleeve 7 matched with the diameter of a lower longitudinal steel bar 6 is selected, a welded sleeve Z25 is adopted by taking a phi 25 steel bar as an example, the diameter of the sleeve is 44mm, the length of the sleeve is 38mm, the size of a chamfer is 5mm, the bottom diameter of the chamfer is 35mm, and the depth of a thread tooth is 38 mm. Welding rod and flux: the manual welding electrode is E5015, and the shielded welding wire is ER 50-3.
Positioning: and (3) according to the position of the longitudinal steel bar 6 at the lower part in the three-dimensional layout simulated by the computer, determining the accurate position of the connecting sleeve 7 on the steel structure stiff column 1.
Base layer treatment: and thoroughly removing impurities such as oxide skin, slag, rust, oil stain, dust, moisture and the like in the range of 30-50mm on the welding groove and two sides of the sleeve.
Welding: the whole process is carried out in the order of first middle and second sides. The welding height is 6mm, the welding size is 6.0 x 45 degrees, and the welding seam gap is 2 mm. And (3) correspondingly weighing welding points 2 during welding, ensuring that the gap between the connecting sleeve 7 and the steel structure stiff column 1 is about 2mm, firstly fixing the connecting sleeve 7 by manual arc welding, and then welding the connecting sleeve 7 by CO2 gas shielded welding. And welding for one circle along the chamfer of the connecting sleeve 7, wherein the welding seam h is 6 mm. And after welding, appearance quality inspection is carried out on the welding seams one by one, so that the welding quality is ensured.
And (3) connecting the lower longitudinal steel bars 6: removing the steel bar protective cap sleeved on the thread head of the lower longitudinal steel bar 6; a qualified screw head is screwed into the connecting sleeve 7. The allowable error of the effective thread length of the screw head is +2p (p is the thread pitch), and taking phi 25 steel bars as an example, the effective length of the screw head is 33mm, the number of teeth is 11, and the thread pitch is 3 mm. And (3) tightly pushing the screw head at the central position of the sleeve by using a torque wrench, wherein the length of the single-side exposed screw thread is not more than 2 p. The phi 25 steel bar tightening torque should not be less than 250 N.m.
In summary, in the connection structure of the concrete frame beam reinforcing steel bars and the steel structure stiff column according to the embodiment of the present invention, the connection strap 4 is disposed on the upper portion of the web plate of the steel structure stiff column 1 and correspondingly connected to the upper longitudinal reinforcing steel bars 3 of the concrete frame beams 2, the connection sleeve 7 is disposed on the lower portion and correspondingly connected to the lower longitudinal reinforcing steel bars 6 of the concrete frame beams 2, and the connection strap 4 and the connection sleeve 7 are welded in advance when the steel structure stiff column 1 is manufactured, so that the connection reliability is improved, the operability of the complex steel beam column node steel bar connection is improved, the construction difficulty is reduced, the structure safety is improved, and the construction cost is saved.
Although the present invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. A connecting structure of concrete frame beam steel bars and a steel structure stiff column is characterized by comprising connecting butt straps and connecting sleeves, wherein the connecting butt straps are transversely arranged on the outer sides of web plates of the steel structure stiff column and correspond to upper longitudinal steel bars of the concrete frame beam to be connected, and the upper longitudinal steel bars are welded with the connecting butt straps; the connecting sleeves are arranged on the outer sides of the webs of the steel structure stiff columns, the number of the connecting sleeves is consistent with that of the lower longitudinal steel bars of the concrete frame beams to be connected, and the connecting sleeves and the lower longitudinal steel bars are arranged in a one-to-one correspondence manner; and the lower longitudinal steel bar is inserted into the connecting sleeve to be fixedly connected.
2. The concrete frame beam reinforcing steel bar and steel structure stiff column connection structure of claim 1, wherein the connection strap is welded with the web of the steel structure stiff column, and the connection strap is welded to the web of the steel structure stiff column according to the relative position of the upper longitudinal reinforcing steel bar and the steel structure stiff column when the steel structure stiff column is manufactured.
3. The connection structure of a concrete frame beam steel bar and a steel structure stiff column according to claim 1, wherein the connection butt strap is provided with a reinforcing rib, and the reinforcing rib is welded with the connection butt strap and a web plate of the steel structure stiff column; the reinforcing ribs are arranged in a staggered mode with the upper longitudinal steel bars.
4. The concrete frame beam reinforcing steel bar and steel structure stiff column connection structure of claim 1, wherein when the upper longitudinal reinforcing steel bars of the concrete frame beam are arranged in a single row, the upper surface of the connection butt strap is aligned with the lower surface of the upper longitudinal reinforcing steel bars, and the upper longitudinal reinforcing steel bars are lap-welded with the upper surface of the connection butt strap; when the upper longitudinal steel bars of the concrete frame beam are arranged in two rows, the connecting butt strap is positioned between the two rows of upper longitudinal steel bars, and the upper row of the upper longitudinal steel bars is in lap joint welding with the upper surface of the connecting butt strap; and the lower row of the upper longitudinal steel bars is in lap joint welding with the lower surface of the connecting butt strap.
5. The concrete frame beam reinforcing steel bar and steel structure stiffening column connection structure of claim 4, wherein the welding length of the upper longitudinal reinforcing steel bar and the connection strap is greater than or equal to 5d, and d is the diameter of the upper longitudinal reinforcing steel bar.
6. The concrete frame beam rebar and steel structure stiff column connection structure of claim 1, wherein the connection sleeve is welded with the web of the steel structure stiff column, and the connection sleeve is welded to the web of the steel structure stiff column according to the relative position of the lower longitudinal rebar and the steel structure stiff column when the steel structure stiff column is manufactured.
7. A concrete frame beam reinforcing steel bar and steel structure stiff column connecting structure as claimed in claim 1, wherein said connecting sleeve is a straight screw sleeve, and the reinforcing bar thread of said lower longitudinal reinforcing steel bar is screw-connected with the connecting sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220110889.9U CN216892872U (en) | 2022-01-17 | 2022-01-17 | Connecting structure of concrete frame beam steel bar and steel structure stiff column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220110889.9U CN216892872U (en) | 2022-01-17 | 2022-01-17 | Connecting structure of concrete frame beam steel bar and steel structure stiff column |
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| CN216892872U true CN216892872U (en) | 2022-07-05 |
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| CN202220110889.9U Active CN216892872U (en) | 2022-01-17 | 2022-01-17 | Connecting structure of concrete frame beam steel bar and steel structure stiff column |
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