The connected node of a kind of steel core concrete column and girder steel and architectural structure system
Technical field
The present invention relates to technical field of structural engineering, particularly relate to connected node and the architectural structure system of a kind of steel core concrete column and girder steel.
Background technology
It is high that concrete filled steel tube has intensity, and ductility is good, endurance, shock resistance, the easy superiority such as construction and enjoy favor, and in highrise building, application gets more and more.But the node of Large-diameter Steel pipe concrete column research is also immature, and the node type of attachment of Large-diameter Steel pipe concrete column and beam and structure directly have influence on stability and the safety of building structure, and the while also affects building structural steel amount and economy.
At present, existing joint form is mainly external circular type node, interior Loop joint and vertically-displacable node etc., but for Large-diameter Steel pipe concrete column, the concertedness variation of concrete and steel, all there is larger limitation in above type of attachment.External circular type node major defect is that steel using amount is large, and in the time that concrete filled steel tube column dimension is larger, steel pipe and concrete collaborative work are poor, and node rigidity declines to some extent; Vertically-displacable node major defect is that Vierendeel girder and steel pipe walls transmission force property are poor, and is not suitable for the not situation on same straight line of post both sides girder steel.Interior Loop joint major defect is that is easily tearing with steel pipe walls weld on the Vierendeel girder edge of a wing to the having relatively high expectations of concreting, one section of application for a patent for invention, (application publication number is CN102877549A in addition, name is called the rigid connection node of a kind of steel core concrete column and girder steel) in, a kind of connected mode of interior Loop joint is disclosed, disclose the technical scheme that reduces inner ring plate width and increase stiffening rib between inner ring plate, and widen from the edge of a wing of the visible wherein girder steel of accompanying drawing and outer wall of steel pipe junction girder steel, solve interior Loop joint having relatively high expectations to concreting, the Vierendeel girder edge of a wing is in the problem of easily tearing with steel pipe walls weld, but for Large-diameter Steel pipe concrete column, also there is the poor problem of steel pipe and concrete concertedness, and wherein inner ring plate is segmented, reduce the quality of connection of node.
As can be seen here, in structure, method and use, obviously still there is defect, and be urgently further improved in the connected node of above-mentioned existing steel core concrete column and girder steel.In order rationally to determine the type of attachment of node of column and beam, safety, reliability and the exploitativeness of checking large diameter steel pipe concrete column reinforcing joint, found a kind of advanced technology, save material, reach the new steel core concrete column of best-of-breed technology economic effect and the connected node of girder steel, becoming the current industry utmost point needs improved target.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of power transmission is clear and definite, simple structure and the good steel core concrete column of ductility and the connected node of girder steel, to improve the quality of connection of node and to increase large diameter steel pipe and concrete concertedness, thereby overcome the deficiency of existing steel core concrete column and steel beam connecting joint.
For solving the problems of the technologies described above, the invention provides the connected node of a kind of steel core concrete column and girder steel, described girder steel is connected at Nodes with the steel pipe of described steel core concrete column, described steel core concrete column is inherent arranges respectively inner ring plate with the upper bottom flange opposite position of girder steel, described inner ring plate is fixedly connected with the steel pipe inner wall of described steel core concrete column, on described inner ring plate, welds many reinforcing bars along described girder steel direction.
As further improvement, the upper and lower surface of described inner ring plate is welded reinforcement respectively.
Further improve, the width of described inner ring plate is less than 1/4 of described steel core concrete column diameter of steel tube.
Further improve, between described two inner ring plates corresponding with bottom flange on girder steel, edge is arranged circumferentially perpendicular rib, and described perpendicular rib is fixedly connected with described steel core concrete column steel pipe inner wall.
Further improve, on the steel pipe inner wall of described steel core concrete column along hoop with multiple pegs are longitudinally set.
Further improve, the steel pipe of described girder steel and described steel core concrete column is by being welded to connect, and the flange width of described weld girder steel is greater than the flange width of non-weld girder steel.
Further improve, reinforcing cage is also set in described steel core concrete column, the vertical muscle of described reinforcing cage connects described steel core concrete column, and interrupt in the region of the stirrup of described reinforcing cage between described inner ring plate.
Further improve, the stirrup of described reinforcing cage is spiral.
Further improve, described girder steel is H section steel beam.
The technical problem that the present invention also will solve is to provide a kind of architectural structure system of safety and stability, overcomes the deficiency that the connected node of steel core concrete column and girder steel in existing architectural structure system exists.
For solving the problems of the technologies described above, the invention provides a kind of architectural structure system, comprise the connected node of above-mentioned steel core concrete column and girder steel.
Adopt above-mentioned technical scheme, the present invention at least has the following advantages:
(1) the present invention by welding many reinforcing bars along girder steel direction on inner ring plate, make the power transmission of girder steel clear and definite, globality is high and ductility good, be conducive to improve quality of connection, increase equally steel pipe and concrete mechanical snap power, efficiently solved the poor problem of steel pipe and concrete concertedness in Large-diameter Steel pipe concrete column;
(2) the present invention, by reducing the width of inner ring plate, has reduced the difficulty of concreting, and concrete pouring quality is guaranteed;
(3) the present invention by arranging perpendicular rib between inner ring plate, peg is set on steel pipe inner wall, further increase steel pipe and concrete mechanical snap power and frictional force, effectively solved the poor problem of steel pipe and concrete concertedness in large diameter steel pipe concrete column;
(4) the present invention, by widening the flange width of girder steel at weld, is effectively alleviated the problem that the girder steel edge of a wing and steel pipe walls weld are easily torn;
(5) the present invention, by reinforcing cage is set, efficiently solves the problem of concrete shrinkage and creep;
(6) structure of the present invention obviously reduces steel using amount, and beam column angle flexibility enhancing, and the layout of Liang Yuzhu is stronger.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Fig. 1 is the schematic perspective view of the connected node of steel core concrete column of the present invention and girder steel.
Fig. 2 is I-I generalized section in Fig. 1;
Fig. 3 is the II-II generalized section of Fig. 1;
Detailed description of the invention
Referring to figs. 1 through 3 visible, the connected node of steel core concrete column of the present invention and girder steel, comprises the large diameter steel pipe 1 of girder steel 2 and steel core concrete column.Girder steel 2 adopts H section steel beam, certainly also can adopt i-shape steel beam etc.H section steel beam 2 welds together at Nodes with the steel pipe 1 of steel core concrete column, in the edge of a wing of weld H section steel beam 25 width widen.In steel pipe 1, weld respectively inner ring plate 3 with the 5 opposite position places, upper bottom flange of H section steel beam 2.In order to reduce the difficulty of concreting, the width of inner ring plate 3 is less, as is less than 1/4 of steel pipe 1 diameter.In order to improve quality of connection and to increase steel pipe and concrete mechanical snap power, the upper and lower surface of inner ring plate 3 is welded respectively two placing of reinforcements 6, and reinforcing bar 6 is along the 2 direction settings of H section steel beam, makes the power transmission of girder steel clear and definite, globality is high and ductility good.In order to increase large diameter steel pipe and concrete mechanical snap power and frictional force, and H section steel beam 2 between corresponding two inner ring plates 3 in bottom flange 5 along being arranged circumferentially multiple vertical stiffening ribs 4, vertical stiffening rib 4 is fixedly connected with steel pipe 1 inwall, and on the inwall of steel pipe 1 along hoop with multiple pegs 8 are longitudinally set.
In addition, for solving the problem of concrete shrinkage and creep, spiral reinforcement cage 7 is also set in steel pipe 1, the vertical muscle of spiral reinforcement cage 7 connects whole steel pipe 1, and interrupt in the region of the stirrup of spiral reinforcement cage 7 between upper slower inner ring plate.
Processing and fabricating of the present invention is simple, and convenient welding is installed.Specific implementation process is:
(1) peg 8 on reinforcing bar 6 and the steel pipe inner wall of the vertical stiffening rib 4 between steel pipe 1, Nodes inner ring plate 3, inner ring plate, inner ring plate upper and lower surface completes in the manufacture of steel work factory process, and specific practice is with reference to accompanying drawing 1 to 3;
(2) node of making is transported to scene, first node is fixed, then put into spiral reinforcement cage 7;
(3) by H section steel beam 2 and steel pipe 1 outer wall welding;
(4) last placing of concrete.
This implementation method all adopts conventional Steel Structure Installation technique, and scantling should meet the design principles of foregoing.
Steel core concrete column of the present invention can be used for any architectural structure system that needs steel core concrete column to be connected with girder steel with the connected node of girder steel, to improve the safety and stability of this building structure.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.