CN211690771U - Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes - Google Patents

Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes Download PDF

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CN211690771U
CN211690771U CN202020123679.4U CN202020123679U CN211690771U CN 211690771 U CN211690771 U CN 211690771U CN 202020123679 U CN202020123679 U CN 202020123679U CN 211690771 U CN211690771 U CN 211690771U
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conversion
steel
shaped
joint
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王震
杨学林
陈志青
赵阳
冯永伟
程俊婷
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Zhejiang Province Institute of Architectural Design and Research
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Zhejiang Province Institute of Architectural Design and Research
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Abstract

The utility model discloses a Y type facade of box shaped steel pipe welding constitution is submitted and is changeed node, including main division board assembly, batter post component joint, the straight post crossover sub of shaped steel concrete, shaped steel concrete roof beam attach fitting. The main partition plate assembly is a central support framework, and separates the inclined column member joint, the section steel concrete straight column conversion joint and the section steel concrete beam connecting joint; the inclined column member joint is a box-shaped steel pipe joint formed by welding plates and is in butt welding with the main partition plate assembly; the steel concrete straight column conversion joint is positioned right below the main partition plate assembly and is used for transition conversion from a box-shaped inclined column to a steel concrete straight column in a shape like the Chinese character 'wang'; the steel reinforced concrete beam connecting joints are positioned on two horizontal sides of the joint, and the rigid bolts are welded on the main partition plate assembly. The node is based on a section replacement technical scheme and nonlinear instability damage limit analysis, and the node plate has clear modules and clear force transmission, ensures better anti-seismic performance and higher lateral bearing capacity, and has wider application range.

Description

Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes
Technical Field
The utility model belongs to the technical field of structural engineering, especially, relate to a Y type facade of box tubular steel welding constitution is submitted and is converted node.
Background
The batter post system is a spatial vertical reticular structure formed by multidirectional crossing and regular arrangement of batter post components on the outer surface of the building periphery, and is mainly applied to batter post outer frame cylinders in super high-rise buildings due to novel outer surface shapes and great overall lateral stiffness.
The huge lateral stiffness of the batter post outer frame cylinder enables the batter post outer frame cylinder to bear great horizontal action (earthquake, wind load and the like), and the lateral stiffness of the inner core cylinder can be correspondingly and properly reduced by connecting weak connecting beams under the condition that the total horizontal force is not changed, so that better play space is brought to the functional arrangement in the building.
However, in the batter post system, the vertical, horizontal loads of the structure are mainly carried by the axial forces of the batter post members. And once the axial force exceeds the instability limit value, the structure cannot continuously bear the load subsequently due to large-amplitude instability deformation, and the anti-seismic ductility of the structure is relatively insufficient. Meanwhile, due to the huge lateral rigidity of the outer inclined column frame barrel relative to the inner core barrel, the outer inclined column frame barrel is usually damaged before the inner core barrel to form a second defense line for seismic fortification, and therefore the requirement on the elastic-plastic bearing performance of the outer inclined column frame barrel under axial compression is higher.
In addition, the oblique column convergence conversion node has the problems of more convergence components, complex structure of a node plate, complex stress deformation of the node, complex welding, assembling and manufacturing processes of the plate and the like, and a reasonable and effective design scheme of the convergence conversion node is also an important factor for ensuring the bearing performance of the oblique column convergence conversion node.
Based on above-mentioned reason, improve the effective thinking of batter post collection conversion node antidetonation, anti-wind bearing performance as follows:
firstly, through an effective scheme for designing the cross conversion node of the vertical surface of the oblique column and a plate welding and assembling process, the cross conversion node of the oblique column is always in a reasonable stress state of a strong core and a weak member;
secondly, through normal use state and ultimate bearing buckling analysis, the oblique column convergence conversion node is mainly loaded in an elastic stage, and locally enters a plastic stage, so that the bearing performance reserve of the oblique column convergence conversion node is improved, and the brittle failure of axial compression buckling instability of the oblique column convergence conversion node is avoided.
In summary, based on the technical scheme of section replacement and the ultimate buckling analysis method, it is necessary to study a Y-shaped vertical surface intersection conversion node form formed by welding box-type steel pipes and a design method thereof so as to be suitable for effective conversion connection and bearing from a box-type inclined column at the bottom of the superstructure of a super high-rise building to a steel concrete straight column.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a conversion node is submitted to Y type facade that box shaped steel pipe welding is constituteed can realize that the effective conversion of rectangle plane superelevation layer batter post system superstructure bottom position box batter post to shaped steel concrete vertical column is connected. The node plate has clear composition modules and clear force transmission, effectively accords with the principles of strong cores and weak members, and improves the anti-seismic performance based on the design idea of high bearing capacity and low ductility while fully playing the huge side-bearing performance of the batter post system.
In order to achieve the above objects and other related objects, the present invention adopts the following technical solutions:
a Y-shaped vertical surface intersection conversion node formed by welding box-type steel pipes comprises a main partition plate assembly, an inclined column member joint, a steel concrete straight column conversion joint and a steel concrete beam connection joint; the steel concrete straight column conversion joint is used for the transition conversion from a box-shaped inclined column to a steel concrete straight column in a shape like the Chinese character 'wang'; the connecting joint of the profile steel concrete beam is used for rigid bolt welding with the peripheral anti-bending horizontal profile steel concrete beam.
The main partition plate assembly consists of a vertical main conversion plate, internal support rib plates orthogonal to the vertical main conversion plate, upper flange conversion plates respectively welded and assembled on two sides of the vertical main conversion plate and at the top ends of the internal support rib plates, lower flange conversion plates respectively welded and assembled on two sides of the vertical main conversion plate and at the bottom ends of the internal support rib plates, and a circumferential vertical outer wall plate vertically fixed between the upper flange conversion plates and the lower flange conversion plates and vertically and fixedly connected with the outer sides of the vertical main conversion plates and the outer edges of the internal support rib plates; the internal support rib plate is used for transition of the steel concrete straight column in the node and local lateral support of the plate; the main partition plate assembly is a central support framework, and separates the inclined column member joint, the section steel concrete straight column conversion joint and the section steel concrete beam connecting joint; the inclined column member joint comprises two box-shaped steel pipes formed by welding plates, and the two box-shaped steel pipes are welded on two sides of the vertical main conversion plate in a V shape and are fixedly connected with the upper flange conversion plate; the box-shaped steel pipe and the upper flange conversion plate form an angle of 50-80 degrees; the vertical main conversion plate is provided with a through hole 30 for communicating the two box-shaped steel pipes; the section steel concrete straight column adapter is fixed under the main partition plate assembly, and through holes for communicating the box-shaped steel pipe with the section steel concrete straight column adapter are formed in the upper flange conversion plate and the lower flange conversion plate. In consideration of comprehensive economic performance, concrete is poured into the oblique column convergence conversion node for performance enhancement, and concrete flow through holes are formed in the intersection range of the oblique column members in the upper flange conversion plate, the vertical main conversion plate and the oblique column member joint, so that the node can achieve mutual circulation of the concrete at all positions up, down, left and right. The transverse partition plates at the end parts of the inclined column member joints are provided with pouring holes so as to facilitate the self-compaction flow of concrete. Preferably, through holes respectively formed in the centers of the upper and lower flange conversion plates and in the upper end of the vertical main conversion plate are long round holes with the diameter of 250 mm. The connecting joints of the section steel concrete beams are fixed on the two horizontal sides of the main partition plate assembly of the node.
Furthermore, the shapes of the upper flange conversion plate and the lower flange conversion plate are composed of a rectangle and a trapezoid, the lower bottom edge of the trapezoid is connected with the long edge of the rectangle, the width of the rectangle is equal to that of the internal support ribbed slab, and the width of the upper bottom edge of the trapezoid is equal to that of the connection joint of the section steel concrete beam. The gradient of the trapezoid is 2: 1. a section steel joint stiffening web plate is further fixed between the trapezoidal areas of the upper flange conversion plate and the lower flange conversion plate, and the end parts of the section steel joint stiffening web plate, the upper flange conversion plate and the lower flange conversion plate form an H-shaped section steel corbel joint serving as a section steel member stud welding rigid joint.
Further, shaped steel concrete beam attach fitting is H shaped steel, offers the bolt hole on the shaped steel connects the stiffening web, and shaped steel connects the stiffening web and carries out bolted connection with H shaped steel web. When the H-shaped steel joint is connected, the narrow sides of the upper flange conversion plate and the lower flange conversion plate are welded with the flange of the H-shaped steel, and the stiffening web of the steel joint is in bolted connection with the web of the H-shaped steel.
Furthermore, the combined type steel-concrete beam three-part (18) is fixed on the inner side of the main partition plate combined body and is in rigid bolted welding connection with the vertical main conversion plate.
Further, the section steel concrete straight column conversion joint is composed of a field-shaped steel column and a king-shaped steel column which are sequentially fixed right below the main partition plate assembly. The connecting part of the section steel concrete straight column and the main partition plate assembly is additionally provided with a side wall stiffening plate, so that a field-shaped conversion structure is formed, and the conversion connection from the box-shaped inclined column to the king-shaped section steel concrete straight column is realized. The inner side and the outer side of the steel reinforced concrete member are both provided with studs to fully contact with concrete to form integral stress. A middle partition plate of the 'field' -shaped steel column and a middle partition plate of the 'king' -shaped steel column are provided with filleted corner transition or corner cut transition, the long side of the corner cut transition is 6t, the short side of the corner cut transition is 2t, and t is the maximum wall thickness of the inclined column member joint.
Furthermore, the vertical stressed member after the steel reinforced concrete straight column is converted as the inclined column member comprises a steel conversion structure shaped like a Chinese character 'tian' and a steel stressed support structure shaped like a Chinese character 'wang'. Based on the technical scheme of node intersection construction section replacement, the conversion height of the side wall stiffening plate of the steel conversion structure shaped like a Chinese character 'tian' is not less than 1.5 times of the section height of the steel section shaped like a Chinese character 'wang', and the thickness of the steel section is not less than 1.0 time of the maximum wall thickness of each inclined column component joint and is not less than 25 mm; the web plate and the middle partition plate of the king-shaped steel column are main stressed plate pieces formed by converging and converting the middle plate pieces of the inclined column members, and the thickness of the main stressed plate pieces is not less than 2.0 times of the maximum wall thickness of each inclined column member joint; the wing plates on two sides of the king-shaped steel column are main stressed plates after the two side wall plates of the inclined column member are converged and converted, and the thickness of the wing plates is not less than 1.5 times of the maximum wall thickness of each inclined column member joint.
Furthermore, the middle partition plate of the 'tian' -shaped steel column and the 'wang' -shaped steel column and the vertical main conversion plate (1) are of an integral structure. The vertical main conversion plate is the middle partition plate with the steel section shaped like the Chinese character 'wang' after conversion.
Furthermore, the top end of the box-shaped steel pipe is also provided with an inclined column end transverse clapboard, and a through hole is formed in the inclined column end transverse clapboard.
Further, the thicknesses of the vertical main conversion plate (1), the upper flange conversion plate, the lower flange conversion plate and the peripheral vertical outer wall plate (6) are respectively not less than 2.0, 1.5 and 1.5 times of the maximum wall thickness of the inclined column member joint; according to the technical scheme of section replacement based on the node intersection structure, a vertical main conversion plate is a main stress plate, a compression effect along the thickness z direction exists, and the thickness is not less than 2.0 times of the maximum wall thickness of each inclined column member joint; the upper flange conversion plate, the lower flange conversion plate and the peripheral vertical outer wall plate are main components, and the thickness of the main components is not less than 1.5 times of the maximum wall thickness of each inclined column component joint; the upper flange conversion plate and the lower flange conversion plate are positioned on two sides of the vertical main conversion plate and are in right-angle T-shaped butt welding;
further, the upper flange transition plate is cross butt welded to the diagonal column member in the diagonal column member joint.
Furthermore, each component part of the node below the inclined column component joint is a steel reinforced concrete component, concrete is poured on the inner side, and steel bars and concrete are coated on the outer side so as to reinforce the node and achieve effective waterproof and moistureproof effects.
The utility model discloses in, batter post component joint is formed by four board spare welding combinations, for the box cross-section, is located two positions in the top of the main division board assembly respectively. During welding, the vertical main conversion plate and the upper and lower flange conversion plates are in T-shaped cross welding, the vertical cross welding angle is smaller than 30 degrees, internal backing welding needs to be performed, and the center lines of the two inclined column member joints and the steel concrete straight column conversion joint are converged at the center of the main partition plate assembly.
In the utility model, the internal supporting rib plates are positioned in the main partition plate assembly, the plane position corresponds to the steel web plate shaped like the Chinese character 'wang', the thickness is not less than 2.0 times of the maximum wall thickness of each inclined column component joint, and the thickness is larger, so that the internal supporting rib plates can be arranged in a single way; the internal support rib plates are used as lateral local supports of the upper flange conversion plate and the lower flange conversion plate after the pouring holes are formed and the strength is weakened, so that local buckling instability of the gusset plate is avoided.
Through the technical scheme, the utility model discloses following beneficial effect has:
the Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes provided by the utility model has reasonable node structure, can realize effective conversion connection of the inclined column component at the bottom of the upper structure of the super high-rise building with the rectangular plane of the inclined column system, and fully exerts the great side resistance performance advantage of the inclined column system; the intersecting joint separates and intersects the inclined column member, the section steel concrete straight column and the section steel concrete beam through the vertical main conversion plate and the horizontal flange conversion plate, and the reasonable stress state of the strong-core weak member can be ensured based on the joint technical scheme of section substitution; the mode of the oblique column component, the central support framework, the transition structure in the shape of the Chinese character 'tian' and the steel concrete straight column in the shape of the Chinese character 'wang' can effectively realize the conversion of the stress form of the node; the pouring holes are formed, and a local stable reinforcing mode of the internal support rib plates is adopted, so that the mechanical bearing performance of the node can be further guaranteed, the node is basically mainly in an elastic stage bearing state, and locally enters a high bearing capacity stress state in a plastic stage, and brittle failure is avoided. The convergent-divergent joint has definite constituent modules, clear force transmission and high bearing capacity of the joint, and has wide application prospect in an inclined column system.
Drawings
The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and do not limit the present invention, and in which:
fig. 1a, 1b, 1c, and 1d are respectively a schematic structural diagram, a schematic vertical main transfer plate, a schematic main partition plate assembly (without the main vertical transfer plate), and a schematic internal support rib plate of an embodiment of the Y-shaped vertical face intersection transfer node formed by welding the box-type steel pipes of the present invention;
fig. 2 is an orthogonal side view 1 of an embodiment of a Y-shaped facade intersection transition node of the present invention;
fig. 3 is an orthogonal side view 2, i.e., a schematic view cut a-a in fig. 2, of an embodiment of the Y-shaped facade intersection transition node of the present invention;
FIG. 4 is a cut-away top view of the main partition panel assembly B-B of FIG. 2;
FIG. 5 is a top cross-sectional view of the main partition panel assembly C-C of FIG. 2;
FIG. 6 is a schematic view of the reinforcement bars of the main partition plate assembly of FIG. 2 cut at section C-C (corresponding to FIG. 5);
FIG. 7 is a sectional top view taken along line D-D of the transition portion of steel in the shape of Chinese character tian in the steel reinforced concrete column of FIG. 2;
FIG. 8 is a top view of the section E-E of the steel force-bearing portion of the steel column of FIG. 2;
FIG. 9 is a cut-away view of the diagonal member joint bulkhead positions F-F of FIG. 2;
FIG. 10 is a sectional view taken in section G-G of the upper batter post member of FIG. 2 at the location of the side pour holes;
FIGS. 11a and 11b are sectional views taken in section H-H in FIG. 2 (corresponding to FIG. 10) when inner or outer reinforcing plates are used for the side-pouring holes of the upper diagonal post member;
FIGS. 12a and 12b are respectively a plate welding assembly view at a J-J cutting position of the upper batter post member of FIG. 4 and a welding overview view when a T-shaped cross welding angle is less than 30 degrees;
fig. 13 is a flow chart of the welding and assembling of the plates of the embodiment of the Y-shaped vertical intersection transition node of the present invention;
FIG. 14 is a linear perturbation axial pressure instability deformation diagram (sinusoidal waveform) of a Y-shaped facade junction transition node;
FIG. 15 is a graph of dual nonlinear axial compression steady load convergence curves (extrema) for a Y-shaped facade rendezvous transition node;
in the drawings, the reference numerals denote the following components:
1. a vertical main conversion plate; 2. a first upper flange conversion plate; 3. a second upper flange conversion plate; 4. a first lower flange conversion plate; 5. a second lower flange conversion plate; 6. a peripheral vertical outer wall plate; 7. an inner support rib; 8. a first box-shaped steel pipe; 9. a second box-shaped steel pipe; 10. a section steel member of the section steel concrete straight column; 11. the section steel side wall of the section steel concrete straight column is provided with a stiffening plate; 12. concrete is coated outside the steel concrete straight column; 13. a cross partition plate at the end of the oblique column; 14. a stiffening web of the steel joint; 15. the section steel web plates of the section steel concrete beam joints are connected through bolts; 16. a profile steel component of the peripheral bending-resistant profile steel concrete beam I; 17. the second section steel component of the peripheral bending-resistant section steel concrete beam; 18. a section steel member which is vertical to the rigid connection section steel concrete beam III at 90 degrees; 19. the outer concrete coating of the first and second steel reinforced concrete beams; 20. concrete is coated outside the section steel concrete beam III; 21. a central positioning point of the convergent-divergent node; 22. the upper oblique column component is provided with an intersecting positioning point; 23. positioning points of the terminal of the section steel side wall stiffened plate of the section steel concrete straight column; 24. the concrete circulation holes of the upper flange plate; 25. a lower flange plate concrete circulation hole; 26. an inner ring or outer ring stiffener; 27. sealing back the cover plate; 28. pouring holes on the side edges of the inclined column components; 29. pouring holes in the diaphragm plate of the inclined column component; 30. concrete circulation holes of the vertical main conversion plate; 31. the section steel web plates of the section steel concrete beam III are connected through bolts; 32. the inclined columns form a plate I; 33. the oblique columns form a plate II; 34. the oblique columns form a plate III; 35. the oblique columns form a plate IV; 36. backing welding; 37. full penetration groove welding; 38. outer side studs of the steel concrete straight column; 39. inner side studs of the steel concrete straight column; 40. longitudinal ribs of the first steel reinforced concrete beam and the second steel reinforced concrete beam; 41. hooping of the first and second steel concrete beams; 42. the first and second steel reinforced concrete beams have additional longitudinal ribs in the joint area.
Detailed Description
The technical solution of the Y-shaped vertical surface intersection transition node formed by welding box-type steel pipes according to the present invention will be described in detail with reference to the following specific embodiments and accompanying drawings.
The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
A schematic structural diagram of a Y-shaped vertical surface intersection transition joint formed by welding box-type steel pipes, as shown in fig. 1a, 1b, 1c, 1d to fig. 2, which specifically comprises a main partition plate assembly, an inclined column member joint, a section steel concrete straight column transition joint, and a section steel concrete beam connection joint; the main partition plate assembly consists of a vertical main conversion plate 1, an internal support rib plate 7, an upper flange conversion plate, a lower flange conversion plate and a peripheral vertical outer wall plate 6; the main partition board assembly supports a stressed plate by taking a vertical main conversion plate 1 as a center, an internal support rib plate 7 is orthogonal to the vertical main conversion plate 1, an upper flange conversion plate and a lower flange conversion plate are welded and assembled on two sides of the vertical main conversion plate 1, a first upper flange conversion plate 2 and a second upper flange conversion plate 3 are positioned at the upper end of the internal support rib plate 7 and are oppositely welded and assembled on two sides of the vertical main conversion plate 1, similarly, a first lower flange conversion plate 4 and a second lower flange conversion plate 5 are positioned at the lower end of the internal support rib plate 7 and are oppositely welded and assembled on two sides of the vertical main conversion plate 1, and a first lower flange conversion plate 4 and a second lower flange conversion plate 5 are positioned below a first upper flange conversion plate 2 and a second upper flange conversion plate 3; a peripheral vertical outer wall plate 6 is vertically fixed between the upper flange conversion plate and the lower flange conversion plate and is vertically and fixedly connected with the outer side of the vertical main conversion plate 1 and the outer edge of the internal support rib plate 7, so that a central support framework is formed; the inclined column member joint comprises a first box-shaped steel pipe 8 and a second box-shaped steel pipe 9 which are formed by welding plates, and the two box-shaped steel pipes are welded on two sides of the vertical main conversion plate 1 in a V shape and are fixedly connected with the upper flange conversion plate; the box-shaped steel pipe and the upper flange conversion plate form an angle of 50-80 degrees; the vertical main conversion plate 1 is provided with a through hole 30 for communicating the two box-shaped steel pipes; the section steel concrete straight column adapter is fixed under the main partition plate assembly, and through holes for communicating the box-shaped steel pipe with the section steel concrete straight column adapter are formed in the upper flange conversion plate and the lower flange conversion plate. The connecting joints of the section steel concrete beams are fixed on the two horizontal sides of the main partition plate assembly of the node. The whole vertical surface intersection conversion node is in a vertical surface Y shape.
As shown in fig. 3 to 4, the vertical main conversion plate 1 divides the intersection node into two independent parts at the middle and upper parts of the node, and the lower part of the node is converted into a single section steel concrete upright column, and the section steel concrete upright column is used as a vertical stressed support member after the conversion of the inclined column member, as shown in fig. 2, 7 to 8. Comprises a steel conversion structure shaped like a Chinese character 'tian' and a steel stress supporting structure shaped like a Chinese character 'wang' (namely a section steel member 10 of a section steel concrete straight column). The steel conversion structure shaped like a Chinese character 'tian' is composed of a section steel member 10 of a section steel concrete straight column and a section steel side wall stiffening plate 11; the conversion height of the section steel side wall stiffening plate 11 is not less than 1.5 times of the section height of the steel in the shape of the Chinese character 'wang', and the thickness is not less than 1.0 time of the maximum wall thickness of the inclined column member joint and is not less than 25 mm; the web plate and the middle partition plate of the king-shaped steel column are main stressed plates after the middle plates of the inclined column member are converged and converted, and the thickness of the web plate and the middle partition plate is not less than 2.0 times of the maximum wall thickness of the joint of the inclined column member; the wing plates on two sides of the king-shaped steel column are main stressed plates after the two side wall plates of the inclined column member are converged and converted, and the thickness of the wing plates is not less than 1.5 times of the maximum wall thickness of the joint of the inclined column member.
As the preferred scheme, the middle partition plate of the 'tian' -shaped steel column and the 'wang' -shaped steel column and the vertical main conversion plate 1 are of an integral structure. The vertical main converting plate 1 becomes the middle partition plate of the section steel member 10 shaped like the Chinese character 'wang' after conversion. Under the action of common axial compression borne by the box-shaped steel pipe I8, the box-shaped steel pipe II 9 and the section steel member 10 of the section steel concrete straight column, the vertical main conversion plate 1 is used as a main stress plate to bear the compression action along the thickness z direction, namely the z-direction performance requirement of a steel plate is required to be met; in order to realize the effective bearing mode of the strong core and the weak member, the thickness of the joint is not less than 2.0 times of the maximum wall thickness of the inclined column member joint based on the joint technical scheme of cross section replacement of the junction member.
As shown in fig. 3, the vertical main conversion plate 1 is in slope conversion at a terminal positioning point 23 of a section steel side wall stiffening plate 11 of the section steel concrete straight column and becomes a middle partition plate of a steel column shaped like a Chinese character 'wang', the slope conversion can adopt fillet transition or corner cut transition, the long side of a corner cut of the corner cut transition is 6t, the short side of the corner cut transition is 2t, and t is the maximum wall thickness of a joint of an inclined column member. It takes on a planar rectangular shape before and after conversion; the vertical main conversion plate 1 is used as a main stress separation plate, and the distance between each boundary of the rectangle before conversion and the intersection line of the node plates at the two sides is not less than 2.0 times of the maximum wall thickness of the inclined column member joint; the distance between the upper end of the rectangle before conversion and the intersection positioning point 22 of the box-type steel pipe I8 and the box-type steel pipe II 9 is 2.0 times of the maximum wall thickness of the inclined column member joint.
The upper flange conversion plate I2, the upper flange conversion plate II 3, the lower flange conversion plate I4 and the lower flange conversion plate II 5 are respectively positioned at two sides of the vertical main conversion plate 1, bear the shaft pressure convergence effect of the box-shaped steel pipe I8, the box-shaped steel pipe II 9 and the section steel member 10 of the section steel concrete straight column, and convert the two components to a node core area for bearing; based on the technical scheme of cross section replacement of the crossed inclined column members, the thickness of the inclined column member joint is 1.5 times of the maximum wall thickness of the inclined column member joint. As shown in fig. 3 to 5, concrete flow holes 24 and 25 are formed in the intersection and conversion ranges of the upper flange conversion plate and the lower flange conversion plate, the first box-shaped steel pipe 8, the second box-shaped steel pipe 9 and the section steel member 10 of the section steel concrete column, and a concrete flow hole 30 is formed in the upper side of the vertical main conversion plate 1, the diameter of the flow hole is 250mm, and the flow hole is oblong; the mode that combines self-compaction concrete and vibrate for the inside pouring concrete of node fills to each corner of main division board assembly through concrete flow hole 24, 25, 30, realizes the further enhancement of node bearing performance. Correspondingly, an internal supporting rib plate 7 is arranged between the upper flange conversion plate and the lower flange conversion plate, and has the main functions of not only serving as lateral support of the upper flange conversion plate and the lower flange conversion plate after the upper flange conversion plate and the lower flange conversion plate are provided with concrete flow holes so as to avoid local instability damage of the upper flange conversion plate and the lower flange conversion plate, but also serving as a conversion plate part from a box-shaped steel pipe I8, a box-shaped steel pipe II 9 to a middle web plate of a section steel member 10 of a section steel concrete straight column, wherein the thickness of the conversion plate part is not less than 2.0 times of the maximum wall thickness of a joint of an inclined column; each concrete flow hole 24, 25 is provided with only a single inner support rib 7. In addition, as shown in fig. 2 and 5, the peripheral vertical outer wall plate 6 is positioned between the upper flange conversion plate 2 and the lower flange conversion plate 3, and between the upper flange conversion plate 4 and the lower flange conversion plate 5, and is welded with the vertical main conversion plate 1 in a T-shaped manner, and the plane is formed into a box-shaped section; based on the cross section substitution design technical scheme of the crossed inclined column members, the thickness of the cross section substitution design technical scheme is not less than 1.5 times of the maximum wall thickness of the joint of the inclined column members; the main function is to serve as the axial compression intersection transition conversion of the inclined column component.
As shown in fig. 3 to 5, at both sides along the connecting direction of the bending-resistant steel-reinforced concrete beam joint, the distance between the boundary of the upper flange converter plate and the lower flange converter plate and the peripheral vertical outer wall plate 6 is 2.0 times of the maximum wall thickness of the inclined column member joint; the upper flange conversion plate and the lower flange conversion plate are formed by a rectangle and a trapezoid, the lower bottom edge of the trapezoid is connected with the long edge of the rectangle, the width of the rectangle is equal to that of the internal support ribbed slab 7, and the width of the upper bottom edge of the trapezoid is equal to that of the connection joint of the section steel concrete beam. The gradient of the trapezoid is 2: 1. a section steel joint stiffening web plate 14 is further fixed between the trapezoidal areas of the upper flange conversion plate and the lower flange conversion plate, and the inner side of the section steel joint stiffening web plate 14 is welded with the peripheral vertical outer wall plate 6. The main function is to carry out bolt connection 15 with the web plates of the section steel members 16 and 17 of the peripheral bending-resistant section steel concrete beam, and bolt holes are arranged on the web plates according to the equal-strength connection principle; the end parts of the section steel joint stiffening web plate 14, the upper flange conversion plate and the lower flange conversion plate form an H-shaped section steel corbel joint as a section steel member stud welding rigid joint. The steel reinforced concrete beam connecting joint is H-shaped steel (the steel members 16 and 17 of the peripheral anti-bending steel reinforced concrete beam), the steel joint stiffening web plate 14 is provided with bolt holes, and the steel joint stiffening web plate 14 is in bolt connection with the H-shaped steel web plate.
Preferably, the combined type steel concrete beam comprises a third section steel concrete beam 18 fixed on the inner side of the main partition board assembly, the third section steel concrete beam 18 can be orthogonal or obliquely crossed with the inner side of the main partition board assembly, as shown in fig. 3, the third section steel concrete beam 18 in a 90-degree vertical type is rigidly bolted and welded with the inner sides of the vertical main conversion plate 1, the upper flange conversion plate I2, the upper flange conversion plate II 3, the lower flange conversion plate I4 and the lower flange conversion plate II 5, and a web plate of the third section steel concrete beam 18 is bolted and connected 31 with the vertical main conversion plate 1 so as to improve lateral support rigidity. Therefore, the horizontal connecting members of the junction comprise profile steel members 16 and 17 of the peripheral anti-bending profile steel concrete beam and a profile steel member 18 of the 90-degree rigid-connection profile steel concrete beam, as shown in fig. 4 and 5, the horizontal connecting members of the junction are used as an outer frame peripheral floor beam system of an inclined column system, the junction mainly presents an in-plane deformation trend under the axial pressure action of the inclined column member, the peripheral anti-bending profile steel members 16 and 17, the 90-degree rigid-connection profile steel member 18 and the profile steel concrete beam formed by cladding concrete of the peripheral anti-bending profile steel member are mainly bending resistant and shearing resistant, and the axial tension and pressure effects of the plane junction in the out-of-plane floor direction can be ignored.
As shown in fig. 2 and 6, each member below the inclined column member joint, including the joint, is a section steel concrete member, including a main partition plate assembly, a section steel concrete straight column adapter and a section steel concrete beam connection joint, wherein the inner side of the section steel concrete beam connection joint is provided with studs and is poured with concrete, and the outer side of the section steel concrete beam connection joint is provided with studs and is coated with steel bars and concrete, so as to reinforce the joint. The section steel member 10 of the section steel concrete straight column is provided with an outer side bolt 38 and an inner side bolt 39, and is coated with the reinforcing steel bars and the concrete 12 so as to be fully contacted with the concrete to form an integral stress mode. The profile steel members 16 and 17 of the first and second profile steel concrete beams are respectively provided with studs and coated with concretes 19 and 20, and the arrangement of longitudinal bars 40 and stirrups 41 is schematically shown in fig. 6. The first and second steel reinforced concrete beams are reinforced by adding longitudinal ribs 42 in the core area of the node.
As shown in fig. 2, 4 and 8, the inclined column member joint above the node is formed by welding and combining four plates 32, 33, 34 and 35, and comprises a first box-shaped steel pipe 8 and a second box-shaped steel pipe 9, wherein the cross section of the first box-shaped steel pipe is a box-shaped section; the inclined column member joint and the section steel members 16 and 17 of the peripheral bending-resistant section steel concrete beam preferably form an included angle of about 70 degrees, and are symmetrically arranged at two sides of the vertical main conversion plate 1, namely, respectively located at two positions above the main partition plate assembly. The section steel concrete straight column conversion joint below the node is composed of a field-shaped conversion transition part and a king-shaped support stress part, wherein the king-shaped support stress part is formed by welding and combining five plates, namely a section steel member 10 and section steel members 16 and 17 of a section steel concrete beam form an included angle of 90 degrees.
The inclined column members 8 and 9 and the section steel member 10 of the section steel concrete straight column are welded with the vertical main conversion plate 1, the upper flange conversion plate and the lower flange conversion plate in a fully-penetration groove; the cross welding angle between the first box-shaped steel pipe 8, the second box-shaped steel pipe 9 and the vertical main conversion plate 1 is smaller than 30 degrees, internal backing welding needs to be performed, and the center lines of the first box-shaped steel pipe 8, the second box-shaped steel pipe 9 and the section steel member 10 of the section steel concrete straight column are converged at the node center positioning point 21.
As shown in fig. 2 and 9, end diaphragm plates 13 are arranged at the ends of the inclined column member joints 8 and 9, and diaphragm plate pouring holes 29 with the diameter of 300mm are formed in the centers of the end diaphragm plates 13, so that concrete inside the box-type steel pipes I8 and II 9 and the main diaphragm plate assembly can be poured conveniently and can be circulated with the concrete inside the inclined column member; the box-type steel pipe I8 and the box-type steel pipe II 9 are in butt welding with the inclined column component in the end position through a full penetration groove, and the grade of a welding line is one grade so as to meet the design requirement of a strong node.
As shown in fig. 2, 10 to 11a and 11b, when it is necessary to pour concrete inside the diagonal node and not affect the installation of the upper steel structural member due to the construction progress, side pouring holes 28 may be formed in the inner sides of the first box steel pipe 8 and the second box steel pipe 9, and the annular plates may be welded and reinforced.
The side edge pouring holes 28 are formed in the inner side edges of the upper box-shaped steel pipe I8 and the lower box-shaped steel pipe II 9, the distance between the center of the side edge pouring holes and the floor is 800mm, the planar shape of the side edge pouring holes 28 is a long round hole, the diameter of the long round hole is 250mm, and the straight section of the long round hole is 150 mm; because the inclined column component bears the action of axial force, an inner ring or outer ring reinforcing plate 26 is required to be arranged at a pouring hole at the inner side or the outer side of the inclined column component, and the thickness of the reinforcing plate is equal to the thickness of a joint wall of the corresponding inclined column component; after the pouring of the internal concrete is finished, the side pouring holes 28 are sealed by adopting the sealing cover plates 27 with the same inclined column member joint wall thickness and the same pouring hole shape in a groove welding mode.
As shown in fig. 12a, 12b to 13, the utility model relates to a concrete each plate welding assembly process of node structure is as follows:
(1) the vertical main conversion plate 1 is a main stressed component, the lower flange conversion plates 4 and 5 are welded on the vertical main conversion plate 1, the internal support rib plates 7 are welded on the lower flange conversion plates 4 and 5 and the vertical main conversion plate 1, and the peripheral vertical outer wall plates 6 are mutually assembled and welded on the vertical main conversion plate 1 and the lower flange conversion plates 4 and 5;
(2) welding and connecting the upper flange conversion plates 2 and 3 with the plates in the step (1) to form a central support framework;
(3) forming bolt holes in the section steel joint stiffening webs 14 of the section steel concrete beam, and welding the bolt holes on the central support framework in the step (2) to form a panel system in the core area of the node;
(4) the first box-type steel pipe 8 and the second box-type steel pipe 9 are box-type column members and are formed by welding a third plate 34, a fourth plate 35, a first plate 32 on the inner side and a second plate 33 on the outer side, wherein the edges, adjacent to the vertical main conversion plate 1, of the first plate 32 and the second plate 33 are oblique edges and are welded with the vertical main conversion plate 1;
in the assembly welding process, when the cross welding angle is smaller than 30 degrees, an acute angle side backing weld 36 and an obtuse angle side full penetration weld 37 are needed to be performed, as shown in fig. 12 b.
(5) A section steel member 10 of a section steel concrete straight column is welded with a central support framework, wherein a middle partition plate of the section steel member 10 is in transition to a vertical main conversion plate 1, the section steel concrete straight column is provided with an outer side stud 38 and an inner side stud 39, and then a section steel side wall stiffening plate 11 is welded to the section steel member 10 and the central support framework.
The installation process of the steel reinforced concrete composed of the peripheral bending- resistant steel members 16 and 17, the steel member 18 in a 90-degree rigid connection and the cladding concrete thereof is as follows: firstly, the peripheral bending- resistant steel members 16 and 17 are installed, then the steel members 18 which are rigidly connected at 90 degrees are installed, and finally the outer cladding concrete is poured.
As shown in fig. 14, the first order linear perturbation axial instability of the Y-shaped facade junction transformation node is transformed into a sinusoidal waveform, the waveform is applied as an initial geometric defect of the junction transformation node, and the defect amplitude is 1/150 of the side length of the oblique column member.
As shown in fig. 15, the double nonlinear axial pressure stable load convergence curve of the Y-shaped vertical surface intersection transition node is an extreme point instability failure, and after instability, the load cannot be continuously borne, but the ultimate instability load coefficient not taken into account for the reinforcement effect of the internal concrete is 1.703, so that the Y-shaped vertical surface intersection transition node has good linear elastic bearing performance and sufficient seismic performance reserve.
The utility model discloses a conversion node is submitted to Y type facade can be used to the superstructure bottom conversion of the super high-rise batter post system in rectangle plane and connect, and wherein super high-rise is the civil construction that building height is greater than 100 meters.
Compared with the defects of the prior art, the utility model provides a Y type facade of box shaped steel pipe welding constitution meets conversion node mainly comprises all kinds of plates and stiffening rib, and the axial pressure that the batter post component bore is through on "field" style of calligraphy steel part conversion to shaped steel concrete upright post of main division board assembly, shaped steel concrete upright post, and the plate component module is clear and definite, pass power clearly; the node plate structure design method based on the technical scheme of section replacement ensures that the utility model effectively conforms to the reasonable stress mode of strong cores and weak members; based on the ultimate analysis of nonlinear instability destruction, guaranteed the utility model discloses when satisfying the better anti-seismic performance of batter post system in order to avoid the fragility to destroy, full play its huge anti side bearing capacity performance.
The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.

Claims (9)

1. A Y-shaped vertical surface intersection conversion node formed by welding box-type steel pipes is characterized by comprising a main partition plate assembly, an inclined column member joint, a steel concrete straight column conversion joint and a steel concrete beam connection joint;
the main partition board assembly consists of a vertical main conversion board (1), an internal support rib plate (7) orthogonal to the vertical main conversion board (1), upper flange conversion boards respectively welded and assembled on two sides of the vertical main conversion board (1) and at the top end of the internal support rib plate (7), lower flange conversion boards respectively welded and assembled on two sides of the vertical main conversion board (1) and at the bottom end of the internal support rib plate (7), and a peripheral vertical outer wall board (6) vertically fixed between the upper flange conversion board and the lower flange conversion board and vertically and fixedly connected with the outer side of the vertical main conversion board (1) and the outer edge of the internal support rib plate (7); the inclined column member joint comprises two box-shaped steel pipes formed by welding plates, and the two box-shaped steel pipes are welded on two sides of the vertical main conversion plate (1) in a V shape and are fixedly connected with the upper flange conversion plate; the box-shaped steel pipe and the upper flange conversion plate form an angle of 50-80 degrees; the vertical main conversion plate (1) is provided with a through hole (30) for communicating the two box-shaped steel pipes; the section steel concrete straight column adapter is fixed under the main partition plate assembly, and through holes for communicating the box-shaped steel pipe with the section steel concrete straight column adapter are formed in the upper flange conversion plate and the lower flange conversion plate; the connecting joints of the section steel concrete beams are fixed on the two horizontal sides of the main partition plate assembly of the node.
2. The Y-shaped vertical surface intersection conversion node formed by welding box type steel pipes according to claim 1, wherein the shapes of the upper flange conversion plate and the lower flange conversion plate are formed by splicing a rectangle and a trapezoid with the lower bottom edge connected with the long edge of the rectangle, the rectangle is as wide as an internal support rib plate (7), and the width of the upper bottom edge of the trapezoid is as wide as the width of a connection joint of a steel concrete beam; the gradient of the trapezoid is 2: 1; a section steel joint stiffening web (14) is further fixed between the trapezoidal areas of the upper flange conversion plate and the lower flange conversion plate, and the end parts of the section steel joint stiffening web (14), the upper flange conversion plate and the lower flange conversion plate form an H-shaped section steel corbel joint serving as a section steel member stud welding rigid joint.
3. The Y-shaped vertical surface intersection transition node formed by welding box type steel pipes according to claim 1, wherein the steel-concrete beam connection joint is H-shaped steel, a steel joint stiffening web (14) is provided with bolt holes, and the steel joint stiffening web (14) is in bolt connection with the H-shaped steel web.
4. The Y-shaped vertical surface intersection and transformation node formed by welding box type steel pipes according to claim 1, characterized by further comprising a third steel concrete beam (18) fixed on the inner side of the main partition plate assembly.
5. The Y-shaped vertical face intersection conversion joint formed by welding box type steel pipes according to claim 1, wherein the section steel concrete straight column conversion joint is composed of a field-shaped steel column and a king-shaped steel column which are sequentially fixed right below a main partition plate assembly; a middle partition plate of the 'field' -shaped steel column and a middle partition plate of the 'king' -shaped steel column are provided with filleted corner transition or corner cut transition, the long side of the corner cut transition is 6t, the short side of the corner cut transition is 2t, and t is the maximum wall thickness of the inclined column member joint.
6. The Y-shaped vertical face intersection conversion node formed by welding box type steel pipes according to claim 5, wherein the height of the steel column shaped like the Chinese character 'tian' is 1.5 times of the height of the section of the steel column shaped like the Chinese character 'tian'; the thicknesses of the web plate, the wing plates at two sides and the internal support rib plate of the E-shaped steel column and the Wang-shaped steel column are respectively not less than 2.0, 1.5 and 2.0 times of the maximum wall thickness of the inclined column member joint; the thickness of the side wall stiffening plate 11 of the steel column shaped like the Chinese character 'tian' is not less than 1.0 time of the maximum wall thickness of each inclined column member joint and is not less than 25 mm.
7. The Y-shaped vertical surface intersection conversion node formed by welding box type steel pipes according to claim 5, wherein a middle partition plate of a steel column shaped like Chinese character tian and a steel column shaped like Chinese character wang is integrated with the vertical main conversion plate (1).
8. The Y-shaped vertical surface intersection transition node formed by welding box-type steel pipes according to claim 1, wherein an inclined column end transverse partition plate (13) is further arranged at the top end of each box-type steel pipe, and through holes are formed in the inclined column end transverse partition plate (13).
9. The Y-shaped vertical face intersection transition node formed by welding box type steel pipes according to claim 1, wherein the thicknesses of the vertical main transition plate (1), the upper flange transition plate, the lower flange transition plate and the peripheral vertical outer wall plate (6) are respectively not less than 2.0, 1.5 and 1.5 times of the maximum wall thickness of the inclined column component joint.
CN202020123679.4U 2020-01-19 2020-01-19 Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes Active CN211690771U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114457916A (en) * 2022-03-08 2022-05-10 中建钢构工程有限公司 Penetrating type grid-shaped connection node component and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114457916A (en) * 2022-03-08 2022-05-10 中建钢构工程有限公司 Penetrating type grid-shaped connection node component and manufacturing method thereof

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