CN-122013879-A - Steel pipe column foot joint with inclined upper support of steel reinforced concrete conversion beam and construction method

CN122013879ACN 122013879 ACN122013879 ACN 122013879ACN-122013879-A

Abstract

The invention discloses a steel pipe column foot joint with a steel reinforced concrete conversion beam upper support and a construction method, belonging to the technical field of building structures, wherein the joint comprises a steel section intersection section, a steel pipe column, an annular bracket plate, two steel reinforced concrete beams and a steel pipe outsourcing concrete beam which are distributed in a cross shape; the bottom of the steel pipe column is welded with the top of the steel section intersection, an annular bracket plate is arranged at the bottom of the steel pipe column, two section steel beams, top longitudinal ribs and bottom longitudinal ribs distributed on the upper side and the lower side of the two section steel beams are arranged in the steel reinforced concrete beam, the two section steel beams are welded with the steel section intersection, the middle top longitudinal ribs are welded with the annular bracket plate, the top longitudinal ribs on the two sides are arranged around the steel pipe column, the steel pipe is wrapped with the bottom of the steel pipe column by the concrete beam, column foot longitudinal ribs are arranged in the steel pipe beam, and the bottom of the column foot longitudinal ribs are anchored in the steel reinforced concrete beam. The steel tube column foot joint of the steel reinforced concrete conversion beam upper bracket inclination is reliable in anchoring, and can meet the stress requirement of the large-span space inclination steel tube column.

Inventors

HUANG YONG
CHEN GENGJUN
JIANG SHENGXUE
LUO HUIPING
LIN ZUOZHONG
MAO LIANGGEN
YAN SHUN
LI CHENGLIANG

Assignees

中铁第四勘察设计院集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The utility model provides a shaped steel concrete conversion roof beam pop-up slope steel pipe column foot node which characterized in that includes: the section steel intersection sections are distributed in a cross shape; the bottom end of the steel pipe column is welded to the top of the section steel intersection section, and a certain included angle is formed between the steel pipe column and the central axis of the section steel intersection section; the annular bracket plate is welded on the outer wall surface of the bottom of the steel pipe column; The steel reinforced concrete beam comprises two steel reinforced concrete beams, wherein two steel reinforced concrete beams, top longitudinal ribs and bottom longitudinal ribs are arranged in each steel reinforced concrete beam, the top longitudinal ribs and the bottom longitudinal ribs are distributed on the upper side and the lower side of two steel sections, the two steel reinforced concrete beams are respectively welded on two opposite overhanging end faces of the section steel intersection section, the top longitudinal ribs positioned in the middle are welded on the annular bracket plate, and the top longitudinal ribs positioned on the two sides are arranged around the steel pipe column; The steel pipe outsourcing concrete beam is characterized in that the steel pipe outsourcing concrete wraps the bottom of the steel pipe column, column foot longitudinal ribs are arranged in the steel pipe outsourcing concrete beam and comprise two vertical sections and a horizontal section connected with the tops of the two vertical sections, and the bottoms of the two vertical sections are respectively located on two sides of the section steel intersection section and are anchored in the section steel concrete beam.
2. The steel reinforced concrete conversion beam upper support inclined steel pipe column foot node of claim 1, wherein the steel reinforced concrete conversion beam upper support inclined steel pipe column foot node is characterized in that the steel reinforced concrete conversion beam upper support inclined steel pipe column foot node comprises a top plate, a cross web plate and a bottom plate which are sequentially arranged in the vertical direction and welded and fixed, the cross section of the steel reinforced concrete conversion beam is I-shaped and comprises an upper wing plate, a steel reinforced concrete conversion beam web plate and a lower wing plate, and the upper wing plate, the steel reinforced concrete conversion beam upper support inclined steel pipe column foot node, the steel reinforced concrete conversion beam upper support steel pipe column foot node, the steel section is welded and the top plate.
3. The steel tube column foot node of the upper bracket tilting of the steel reinforced concrete conversion beam according to claim 2, wherein the steel section intersection section comprises a plurality of arc-shaped ribbed plates which encircle the cross-shaped web plate, two sides of each arc-shaped ribbed plate are welded on the cross-shaped web plate, and the top of each arc-shaped ribbed plate are respectively welded on the top plate and the bottom plate.
4. A steel reinforced concrete conversion beam upper bracket inclined steel pipe column foot node according to claim 3, wherein the top plate, the bottom plate, the cross web plate and the arc rib adding plate are provided with grout holes.
5. The steel reinforced concrete conversion beam upper bracket inclined steel pipe column foot node of claim 1, wherein the bottom of the vertical section is connected with the bottom longitudinal rib in an anchoring manner after being bent.
6. The steel reinforced concrete conversion beam upper bracket inclined steel pipe column foot node of claim 2, wherein the bottom of the vertical section is connected with the upper wing plate in an anchoring manner through a steel bar connector; The reinforcing steel bar connector is characterized in that a stiffening plate is arranged below the reinforcing steel bar connector, one side of the stiffening plate is welded on a profile steel web plate of the I-shaped profile steel, and the top and the bottom of the stiffening plate are respectively welded on an upper wing plate and a lower wing plate of the I-shaped profile steel correspondingly.
7. The steel reinforced concrete conversion beam pop-up inclined steel pipe column foot node according to any one of claims 1 to 6, wherein a plurality of welding nails are arranged on the top surface and the bottom surface of the steel reinforced steel beam, and/or a plurality of welding nails are arranged on the outer wall surface of the steel pipe column.
8. The steel reinforced concrete conversion beam pop-up tilt steel tube column foot node of any one of claims 1-6, wherein the steel tube column comprises a steel tube column lower section and a steel tube column upper section, the bottom end of the steel tube column lower section is welded to the top of the steel section intersection section, the bottom of the steel tube column upper section is welded to the top of the steel tube column lower section, and the steel tube encased concrete beam wraps the steel tube column lower section and a portion of the steel tube column upper section.
9. The steel reinforced concrete conversion beam pop-up tilt steel tube column foot node of any one of claims 1-6, wherein a haunch angle is arranged at a joint of two steel reinforced concrete beams.
10. The construction method of the steel tube column foot node for the steel reinforced concrete conversion beam pop-up tilt as claimed in any one of claims 1 to 9, comprising the following steps: (1) Prefabricating four section steel beams, section steel intersection sections, steel pipe columns and annular bracket plates; (2) Setting up a template on site, paving bottom longitudinal ribs, and positioning and fixing the bottom longitudinal ribs; (3) Respectively welding four section steel beams on four overhanging end faces of a section steel intersection section, welding an annular bracket plate on the periphery of the bottom of a steel pipe column, and welding the bottom of the steel pipe column on the top of the section steel intersection section; (4) Paving top longitudinal ribs, and welding the middle top longitudinal ribs on the annular bracket plate; (5) Binding column foot longitudinal ribs, and pouring concrete to form two steel reinforced concrete beams and a steel pipe-encased concrete beam; (6) And removing the template after the concrete curing reaches the design strength, and completing the construction of the whole node.

Description

Steel pipe column foot joint with inclined upper support of steel reinforced concrete conversion beam and construction method Technical Field The invention belongs to the technical field of building structures, and particularly relates to a steel pipe column foot joint with a steel reinforced concrete conversion beam upper bracket and a construction method. Background With the rapid development of the building industry, the large-span complex modeling space steel structure is widely applied to engineering projects such as landmark building, large-scale stadium, exhibition center and the like due to the advantages of attractive appearance and high space utilization rate. The column net of the steel structure is limited by architectural modeling design, and the space type inclined steel pipe column design is mostly adopted, so that the column net cannot be directly aligned with the column net with lower regularity, and load transfer and structural connection are realized through the concrete conversion beam, so that the reliability of a node between a steel pipe column foot and the concrete conversion beam is directly determined, and the safe and stable operation of the whole large-span space steel structure is directly determined. At present, aiming at the rigid connection requirement of the inclined steel pipe column foot under a beam-slab conversion system, two common treatment modes are mainly that a large-size concrete column pier is additionally arranged on a node, the concrete column pier is tightly connected with a conversion node by using a reinforcing steel bar, the steel column foot is embedded into the column pier, and the volume of the thickened concrete conversion node is enlarged by adopting an armpit manner so as to pre-embed the space steel column foot. But the two construction modes have the problems of insufficient anchoring strength, concentrated node stress and the like, and particularly under the coupling influence of vertical load, horizontal component force, wind load and earthquake action of a large-span inclined steel column, the column foot is easy to generate large tensile force, the hidden troubles of relative sliding, pulling-out and the like between the steel column foot and a concrete conversion beam can be caused due to insufficient anchoring strength, and the stability and the safety of the whole large-span complex modeling space steel structure are further influenced. Disclosure of Invention Aiming at one or more of the defects or improvement requirements in the prior art, the invention provides the steel pipe column foot joint with the inclined upper support of the steel reinforced concrete conversion beam and the construction method, which are reliable in anchoring, can form a whole with good stress performance, effectively adapt to the arrangement requirement of the space type inclined steel pipe column, and can meet the stress requirement and flexible construction requirement of the large-span space inclined steel pipe column. In order to achieve the above object, the present invention provides a steel pipe column foot node for supporting and tilting a steel section concrete transfer beam, comprising: the section steel intersection sections are distributed in a cross shape; the bottom end of the steel pipe column is welded to the top of the section steel intersection section, and a certain included angle is formed between the steel pipe column and the central axis of the section steel intersection section; the annular bracket plate is welded on the outer wall surface of the bottom of the steel pipe column; The steel reinforced concrete beam comprises two steel reinforced concrete beams, wherein two steel reinforced concrete beams, top longitudinal ribs and bottom longitudinal ribs are arranged in each steel reinforced concrete beam, the top longitudinal ribs and the bottom longitudinal ribs are distributed on the upper side and the lower side of two steel sections, the two steel reinforced concrete beams are respectively welded on two opposite overhanging end faces of the section steel intersection section, the top longitudinal ribs positioned in the middle are welded on the annular bracket plate, and the top longitudinal ribs positioned on the two sides are arranged around the steel pipe column; The steel pipe outsourcing concrete beam is characterized in that the steel pipe outsourcing concrete wraps the bottom of the steel pipe column, column foot longitudinal ribs are arranged in the steel pipe outsourcing concrete beam and comprise two vertical sections and a horizontal section connected with the tops of the two vertical sections, and the bottoms of the two vertical sections are respectively located on two sides of the section steel intersection section and are anchored in the section steel concrete beam. The cross section of the section steel beam is I-shaped and comprises an upper wing plate, a section steel web plate and a lower wing plate, and the upper wing pla