CN106638989B - Steel-pipe column and reinforced concrete column add conversion node of roof beam and contain its building - Google Patents
Steel-pipe column and reinforced concrete column add conversion node of roof beam and contain its building Download PDFInfo
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- CN106638989B CN106638989B CN201710082817.1A CN201710082817A CN106638989B CN 106638989 B CN106638989 B CN 106638989B CN 201710082817 A CN201710082817 A CN 201710082817A CN 106638989 B CN106638989 B CN 106638989B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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Abstract
The invention discloses a conversion node for adding beams to a steel pipe column and a reinforced concrete column, wherein the part of the steel pipe column positioned at the upper part is inserted into the reinforced concrete column positioned at the lower part, a bracket is welded on the outer wall of the steel pipe column, and longitudinal stress steel bars of the reinforced concrete column are connected with the steel pipe column by being welded on the bracket. The invention also discloses a building containing the conversion node. The conversion node has the advantages of definite force transfer, reasonable structure, safety and reliability, and the building containing the conversion node is safe, stable and economic and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of building structure engineering, in particular to a steel pipe column and reinforced concrete column beam-added conversion node and a building comprising the same.
Background
The hybrid structure system is a novel structure system which is rapidly developed in China in recent years and is mainly used for high and super high building structures. Compared with a concrete structure, the concrete structure has obvious advantages in the aspects of reducing the self weight of the structure, reducing the size of the section of the structure, improving the stress performance of the structure, accelerating the construction progress and the like; compared with a pure steel structure, the fireproof steel plate has the characteristics of good fireproof performance, small comprehensive steel consumption and good comfort level of wind load action. Hybrid structures are widely used in high-rise buildings due to their superior performance.
The node is the key site for connecting the beam and the column. The internal force of the beam and the column is transmitted through the joint, so that the safety and the reliability of the joint work are the premise of ensuring the normal work of the structure. At present, the node form of the steel tube concrete column and the reinforced concrete beam mainly comprises a beam steel bar through node, a ring beam node, an external reinforcing ring bracket node, a double-beam node and the like. Due to technical limitation, each type of node has corresponding advantages and disadvantages, and the beam steel bar through node has the disadvantage that the bearing capacity of the steel pipe is weakened by the steel pipe wall open hole, so a stiffening plate needs to be arranged at the steel pipe wall open hole, the construction is complex, the pouring of concrete is influenced by the steel bar penetrating through the steel pipe, and the node has poor manufacturability. The ring beam node has the defects that the steel pipe concrete column has weak capability of participating in bending moment distribution in a normal state and has poor rigidity because only the ring beam is used for distributing the bending moment, and the ring beam protrudes out of the vertical surface when the ring beam node is applied to a side column, so that the building appearance is influenced. The outer stiffening ring bracket joint has the defects that when the beam-end beam longitudinal ribs need to be welded with the stiffening ring, the field welding workload is large, the process is complex, the requirement on welding seams is high, and the adaptability and the flexibility of the joint in the practical process are poor. The double-beam node has the defects that the arrangement of a beam system is complicated, and on the other hand, the arrangement of a floor system is not elegant, so that the appearance and the use of a building are influenced. At present, steel pipe concrete is widely applied, but research on steel pipe concrete beam-column joints is not perfect, and the development of the steel pipe concrete is limited by the problems of complex structure, high construction difficulty, high manufacturing cost and the like of the steel pipe concrete joints in practical application.
In a large-span roof latticed shell structure, a plurality of buildings adopt a partial steel pipe column structure, namely, the upper part of the structure adopts a steel pipe column as a bearing component of a large-span roof so as to increase the plastic deformation capacity of the upper structure, the lower part adopts a reinforced concrete column so as to reduce the steel consumption, the economy is saved, and the steel pipe column and the reinforced concrete column are converted in a certain part. However, the current specifications have not been related to the methods and measures for such conversion, and the applications in the engineering field are difficult to achieve mature, reliable and standard.
Therefore, the above-mentioned steel pipe column and reinforced concrete beam conversion node obviously still has defects in structure, method and use, and further improvement is needed. In order to reasonably determine the connection form between the reinforced concrete beam and the steel pipe column and the conversion form between the steel pipe column and the reinforced concrete column and verify the safety, reliability and feasibility of the nodes, the conversion node which is advanced in technology, reasonable in stress, safe and reliable and is formed by adding the reinforced concrete beam to the steel pipe column and the reinforced concrete column is created, and the conversion node becomes the object which is urgently needed to be improved in the current industry.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a conversion node of a steel pipe column and a reinforced concrete column beam, which has definite force transfer, simple structure and good ductility, so as to improve the connection quality of the node, increase the working cooperativity of the steel pipe column and the reinforced concrete column beam and overcome the defect of the conversion node of the steel pipe column and the reinforced concrete column beam.
In order to solve the technical problems, the invention adopts the following technical scheme:
the steel pipe column and reinforced concrete column add the conversion node of roof beam, wherein, the steel pipe column portion that is located the upper portion is inserted to the reinforced concrete column that is located the lower part down, the welding of steel pipe column outer wall has the bracket, and the vertical atress reinforcing bar of reinforced concrete beam is connected with the steel pipe column through welding on the bracket.
Furthermore, the longitudinal stressed steel bars in the reinforced concrete column at the lower part are welded on the inner wall or the outer wall of the lower inserting part of the steel pipe column.
Furthermore, the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web plate connecting the upper flange and the lower flange, and the longitudinal stress steel bars of the reinforced concrete beam comprise upper double rows of longitudinal stress steel bars and lower double rows of longitudinal stress steel bars; the lower sides of the upper flange and the lower flange of the bracket are respectively welded with additional flanges; the upper side upper row longitudinal stress steel bars/the lower side upper row longitudinal stress steel bars and the upper flange/the lower flange are connected on the upper surface of the flange through welding, and the upper side lower row longitudinal stress steel bars/the lower side lower row longitudinal stress steel bars and the upper surface of the additional flange of the upper flange/the lower flange are connected through welding.
Further, the lower sides of the upper flange and the lower flange of the bracket are respectively welded with the additional flanges through lap plates.
Furthermore, the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web plate which is connected with the upper flange and the lower flange, and the bracket upper flange, the bracket lower flange and the bracket web plate are I-shaped; inner ring plates are respectively arranged in the steel pipe column at positions corresponding to the upper flange and the lower flange of the bracket, and the inner ring plates are welded and connected with the inner wall of the steel pipe column; and longitudinal stiffening ribs are arranged in the steel pipe column at positions corresponding to the corbel webs, and are welded and connected with the inner ring plate and the inner wall of the steel pipe column.
Furthermore, the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web plate connecting the upper flange and the lower flange, and waist rib vertical plates are respectively welded on two sides of the bracket web plate; the reinforced concrete beam is also internally provided with a through long waist rib, and the through long waist rib is welded with the waist rib vertical plate.
Furthermore, the steel pipe column comprises an upper cylindrical steel pipe, a middle conical steel pipe and a lower inserting section cylindrical steel pipe which are connected in a welded mode, and the conical steel pipe is arranged at the node of the steel pipe column and the reinforced concrete beam.
Furthermore, a plurality of studs are arranged on the outer wall of the steel pipe column and in the upper and lower ranges of the reinforced concrete beam along the circumferential direction and the longitudinal direction; and a plurality of studs are arranged on the inner wall of the steel pipe column from the upper edge of the reinforced concrete beam to the lower insertion range of the steel pipe column along the circumferential direction and the longitudinal direction.
And further, concrete is filled in the inner node area of the steel pipe column and the downward inserting range of the steel pipe column.
The second technical problem to be solved by the invention is to provide a safe, stable and economical building adopting a steel pipe column and reinforced concrete column beam adding mode.
In order to solve the technical problems, the invention adopts the following technical scheme:
a building comprises a steel pipe column positioned on the upper portion, a reinforced concrete column positioned on the lower portion and a reinforced concrete beam, wherein the conversion nodes of the steel pipe column, the reinforced concrete column and the reinforced concrete beam adopt the conversion nodes.
By adopting the technical scheme, the invention at least has the following advantages:
(1) according to the invention, a small part of the upper steel pipe column extends to the lower reinforced concrete column, so that the steel consumption is reduced and the economy is saved on the basis of ensuring reasonable stress and safe structure; by welding the longitudinal stressed steel bars of the reinforced concrete beam on the bracket, the anchoring performance of the beam column is enhanced, and the bending moment in the beam can be effectively transmitted to the node area.
(2) According to the invention, the steel pipe of the lower insertion section of the lower reinforced concrete column through the upper steel pipe column is welded with the longitudinal stressed steel bar in the lower reinforced concrete column, so that the connection reliability of the conversion node is improved, and the internal force can be effectively transmitted at the conversion node.
(3) According to the invention, by improving the form of the bracket, the double rows of longitudinal stressed steel bars on the upper side and the lower side of the reinforced concrete beam can be respectively welded on the flange of the bracket and the upper side of the additional flange, so that the problem of construction difficulty caused by overhead welding is effectively solved.
(4) According to the invention, the inner ring plates are respectively arranged in the steel pipe column and at the corresponding positions of the upper flange and the lower flange of the bracket, so that the transmission efficiency of the beam-end bending moment into the steel pipe column is increased, and the stress concentration of the steel pipe wall is reduced; meanwhile, the effect is more remarkable by matching with the longitudinal stiffening rib.
(5) According to the invention, the corbel structure is more stable by arranging the waist rib vertical plate, and meanwhile, the corbel is matched with the through long waist rib, so that the connection reliability of the reinforced concrete beam and the steel pipe column is improved, and the force transmission effect is better.
(6) According to the invention, the stud is arranged on the outer wall of the inner wall of the steel pipe column, so that the mechanical engaging force and the friction force are further increased, and the problem of poor cooperativity of the steel pipe and the concrete is effectively solved.
Drawings
The foregoing is an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
FIG. 1 is a perspective view of a transition joint between an upper steel pipe column and a lower steel pipe concrete column with a reinforced concrete beam;
FIG. 2 is a schematic cross-sectional view taken along line I-I of FIG. 1;
FIG. 3 is a schematic sectional view II-II of FIG. 1;
FIG. 4 is a schematic cross-sectional view III-III of FIG. 1;
FIG. 5 is a schematic section IV-IV of FIG. 1;
FIG. 6 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 7 is a schematic sectional view taken along line B-B of FIG. 1;
FIG. 8 is a detailed view of the bracket of FIG. 1;
in the figure, 1-steel pipe column, 2-reinforced concrete column, 3-inner ring plate, 4-bracket flange, 5-additional flange, 6-lap plate, 7-bracket web, 8-tapered steel pipe, 9-beam longitudinal stress steel bar, 10-stud, 11-column longitudinal stress steel bar, 12-lower inserting section steel pipe, 13-waist rib vertical plate, longitudinal stiffening rib 14 and waist rib 15.
Detailed Description
Referring to fig. 1 to 8, a part of a steel pipe column 1 located at the upper part is inserted downwards into a reinforced concrete column 2 located at the lower part, a steel corbel is welded on the outer wall of the steel pipe column 1, and a beam longitudinal stress steel bar 9 of the reinforced concrete beam is connected with the steel pipe column 1 by being welded on the steel corbel (mainly a corbel flange 4). Through the splicing of the steel pipe column 1 and the reinforced concrete column 2 and the connection of the reinforced concrete beam and the steel pipe column 1 with the steel corbel through the longitudinal beam stressed reinforcing steel bar 9, the effective conversion of the three nodes is realized, and the steel pipe column has the advantages of reasonable stress and definite force transmission.
The steel pipe column 1 comprises an upper cylindrical steel pipe, a middle conical steel pipe 8 and a cylindrical lower inserting section steel pipe 12 which are connected in a welded mode, and the conical steel pipe 8 is arranged at the joint of the steel pipe column 1 and the reinforced concrete beam. Wherein, the multiplicable superstructure ductility of upper portion steel-pipe column, weight, the lower part is converted into reinforced concrete column comparatively economy, because the steel-pipe column is different with the size of reinforced concrete column, and some are big than reinforced concrete column, some are little than reinforced concrete column, so the centre is comparatively reasonable with the toper steel pipe connection.
In the connection between the upper steel pipe column 1 and the lower reinforced concrete column 2, preferably, the column longitudinal stress steel bar 11 in the lower reinforced concrete column 2 is welded to the inner wall or the outer wall of the lower insertion part (corresponding to the lower insertion section steel pipe 12) of the steel pipe column, so that the connection reliability of the conversion node is further increased, and the internal force of the steel pipe column can be effectively transmitted at the conversion node.
In order to solve the problem of overhead welding in construction, additional flanges 5 are respectively welded on the lower sides of bracket flanges 4 (upper flanges and lower flanges) through lap plates 6. The beam longitudinal stress steel bars 9 of the reinforced concrete beam comprise upper side double rows of longitudinal stress steel bars and lower side double rows of longitudinal stress steel bars; the upper side upper row longitudinal stress steel bars/the lower side upper row longitudinal stress steel bars and the upper flange/the lower flange are connected on the upper surface of the flange through welding, and the upper side lower row longitudinal stress steel bars/the lower side lower row longitudinal stress steel bars are connected with the upper surface of the additional flange 5 of the upper flange/the lower flange through welding.
In order to reduce the internal force of the steel pipe wall and increase the transmission efficiency of the bending moment at the beam end, inner ring plates 3 are respectively arranged at the positions corresponding to the upper and lower flanges of the bracket in the steel pipe column 1, and the inner ring plates 3 are welded and connected with the inner wall of the steel pipe column 1; and longitudinal stiffening ribs 14 are arranged in the steel pipe column 1 at positions corresponding to the corbel web 7 (which is I-shaped with the upper flange and the lower flange of the corbel), and the longitudinal stiffening ribs 14 are welded and connected with the inner ring plate 3 and the inner wall of the steel pipe column 1.
In order to further enhance the bracket structure and simultaneously increase the connection reliability and the force transmission performance of the reinforced concrete beam and the steel pipe column 1, waist bar vertical plates 13 are respectively welded on two sides of a bracket web 7; the reinforced concrete beam is also internally provided with a through-length waist bar 15, and the through-length waist bar 15 is welded with the waist bar vertical plate 13.
In order to increase mechanical engaging force and friction force and effectively solve the problem of poor cooperativity of the steel pipe and concrete, a plurality of studs 10 are arranged on the outer wall of the steel pipe column 1 and in the upper and lower ranges of the reinforced concrete beam (particularly in the ranges of upper and lower flanges of a bracket) along the circumferential direction and the longitudinal direction; a plurality of studs 10 are arranged on the inner wall of the steel pipe column 1 in the circumferential direction and the longitudinal direction within the range from the upper edge of the reinforced concrete beam (especially the inner ring plate 3) to the downward insertion of the steel pipe column 1.
The invention has simple processing and manufacturing, convenient installation and welding, and the specific implementation process is as follows:
1. the steel pipe column 1, the inner ring plate 3, the bracket flange 4, the additional flange 5, the lap joint plate 6, the bracket web 7, the stud 10, the waist rib vertical plate 13 and the longitudinal stiffening rib 14 are processed and finished in a steel structure factory.
2. And (5) the nodes are transported to the site for positioning.
3. The beam longitudinal stress steel bar 9 is welded with the bracket flange 4 and the additional flange 5, the column longitudinal stress steel bar 11 is welded with the lower insertion section steel pipe 12, and the waist rib 15 is welded with the waist rib vertical plate 13.
4. And (5) binding beam and column stirrups.
5. Pouring node concrete; wherein, the inner node area (below the inner ring plate 3 corresponding to the upper flange of the bracket) of the steel pipe column 1 and the downward inserting range of the steel pipe column 1 are filled with concrete.
The conversion node of the upper steel pipe column and the lower reinforced concrete column and the reinforced concrete beam can be used for any building structure system needing the node, so that the safety, the stability and the economy of the building structure are improved.
While the invention has been described with reference to certain 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 invention.
Claims (8)
1. The steel pipe column and reinforced concrete column beam-adding conversion node is characterized in that the part of the steel pipe column positioned at the upper part is inserted into the reinforced concrete column positioned at the lower part, a bracket is welded on the outer wall of the steel pipe column, and longitudinal stress steel bars of the reinforced concrete beam are connected with the steel pipe column by being welded on the bracket;
the steel pipe column comprises an upper cylindrical steel pipe, a middle conical steel pipe and a lower inserting section cylindrical steel pipe which are welded together, and the conical steel pipe is arranged at the joint of the steel pipe column and the reinforced concrete beam;
and the longitudinal stressed steel bar in the reinforced concrete column at the lower part is welded on the inner wall or the outer wall of the lower inserting part of the steel pipe column.
2. The steel-pipe column and reinforced concrete column-to-beam conversion node of claim 1, wherein the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web connecting the upper flange and the lower flange, and the longitudinal stressed steel bars of the reinforced concrete beam comprise upper side double rows of longitudinal stressed steel bars and lower side double rows of longitudinal stressed steel bars;
the lower sides of the upper flange and the lower flange of the bracket are respectively welded with additional flanges; the upper side upper row longitudinal stress steel bars/the lower side upper row longitudinal stress steel bars and the upper flange/the lower flange are connected on the upper surface of the flange through welding, and the upper side lower row longitudinal stress steel bars/the lower side lower row longitudinal stress steel bars and the upper surface of the additional flange of the upper flange/the lower flange are connected through welding.
3. The steel pipe column and reinforced concrete column-to-beam conversion joint as claimed in claim 2, wherein the additional flanges are welded to the undersides of the upper and lower flanges of the bracket through lap-joint plates, respectively.
4. The steel pipe column and reinforced concrete column-to-beam conversion node of claim 1, wherein the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web connecting the upper and lower flanges, which are in an i shape;
inner ring plates are respectively arranged in the positions, corresponding to the upper flange and the lower flange of the bracket, in the steel pipe column, and the inner ring plates are welded and connected with the inner wall of the steel pipe column;
and longitudinal stiffening ribs are arranged in the steel pipe column at positions corresponding to the corbel webs, and are welded and connected with the inner ring plate and the inner wall of the steel pipe column.
5. The steel pipe column and reinforced concrete column-added beam conversion node according to claim 1, wherein the bracket comprises a bracket upper flange, a bracket lower flange and a bracket web plate connecting the upper flange and the lower flange, and waist rib vertical plates are respectively welded on two sides of the bracket web plate;
and a through long waist rib is further arranged in the reinforced concrete beam, and the through long waist rib is welded with the waist rib vertical plate.
6. The steel pipe column and reinforced concrete column reinforced beam conversion node according to claim 1, wherein a plurality of studs are arranged on the outer wall of the steel pipe column in the circumferential direction and the longitudinal direction within the upper and lower ranges of the reinforced concrete beam; and a plurality of studs are arranged on the inner wall of the steel pipe column from the upper edge of the reinforced concrete beam to the lower insertion range of the steel pipe column along the circumferential direction and the longitudinal direction.
7. The steel pipe column and reinforced concrete column-to-beam conversion node according to any one of claims 1 to 6, wherein the steel pipe column inner node region and the steel pipe column downward insertion range are filled with concrete.
8. A building comprising an upper steel pipe column, a lower reinforced concrete column and a lower reinforced concrete beam, wherein the conversion node of the three is the conversion node according to any one of claims 1 to 7.
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| CN201710082817.1A CN106638989B (en) | 2017-02-16 | 2017-02-16 | Steel-pipe column and reinforced concrete column add conversion node of roof beam and contain its building |
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| CN201710082817.1A CN106638989B (en) | 2017-02-16 | 2017-02-16 | Steel-pipe column and reinforced concrete column add conversion node of roof beam and contain its building |
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| CN106638989B true CN106638989B (en) | 2022-09-09 |
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Families Citing this family (9)
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| CN107476431B (en) * | 2017-09-18 | 2023-03-14 | 成都市建筑设计研究院有限公司 | Built-in circular steel tube concrete column and double concrete beam node |
| CN108301506B (en) * | 2017-12-28 | 2023-08-11 | 天元建设集团有限公司 | Square steel column-concrete beam bracket node connection structure and construction method thereof |
| CN108824484B (en) * | 2018-08-08 | 2024-04-12 | 北京市市政工程设计研究总院有限公司 | Vehicle section covered steel frame and covered reinforced concrete frame mixed structure |
| CN109680810B (en) * | 2019-02-28 | 2024-04-09 | 清华大学 | Conversion node of upper steel pipe column and lower reinforced concrete column and construction method |
| CN109826324A (en) * | 2019-02-28 | 2019-05-31 | 清华大学 | The transformational structure and conversion method of upper layer steel pipe column and lower layer's reinforced column |
| CN109680809A (en) * | 2019-02-28 | 2019-04-26 | 清华大学 | The switching node and construction method of upper layer steel pipe column and lower layer's reinforced column |
| CN109707055A (en) * | 2019-02-28 | 2019-05-03 | 清华大学 | The switching node and construction method of upper layer steel pipe column and lower layer's reinforced column |
| CN112160414B (en) * | 2020-09-29 | 2022-07-26 | 中建八局科技建设有限公司 | Connecting joint of structural column and structural beam of inverted round steel pipe and construction method thereof |
| CN113982106A (en) * | 2021-12-07 | 2022-01-28 | 广西路建集团建筑工程有限公司 | Transition section structure of reinforced concrete column and steel pipe concrete column and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0518003A (en) * | 1991-07-09 | 1993-01-26 | Ooki Kensetsu Kk | Joining method of steel pipe concrete column and half-precast reinforced concrete column |
| JP5734168B2 (en) * | 2011-11-28 | 2015-06-10 | 大成建設株式会社 | Building structure |
| CN103898983A (en) * | 2012-12-25 | 2014-07-02 | 中铁第四勘察设计院集团有限公司 | Middle layer joint connecting structure of concrete-filled steel tubular column and reinforced concrete beams |
| CN104863271B (en) * | 2015-05-29 | 2018-02-02 | 重庆大学 | A kind of steel core concrete column reinforced beam joint connecting method |
| CN205444493U (en) * | 2016-03-30 | 2016-08-10 | 湖南金海钢结构股份有限公司 | Connected node device of concrete beam and steel core concrete column |
| CN205894314U (en) * | 2016-07-22 | 2017-01-18 | 浙江精工钢结构集团有限公司 | Steel construction pipe post and cross column section conversion node means |
| CN206448375U (en) * | 2017-02-16 | 2017-08-29 | 中国建筑设计院有限公司 | Steel pipe column adds the switching node of beam and the building containing it with reinforced column |
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