CN203403542U - Connecting node between concrete filled steel tube combination column and reinforced concrete girders - Google Patents
Connecting node between concrete filled steel tube combination column and reinforced concrete girders Download PDFInfo
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- CN203403542U CN203403542U CN201320487202.4U CN201320487202U CN203403542U CN 203403542 U CN203403542 U CN 203403542U CN 201320487202 U CN201320487202 U CN 201320487202U CN 203403542 U CN203403542 U CN 203403542U
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Abstract
The utility model relates to a connecting node between a concrete filled steel tube combination column and reinforced concrete girders. The concrete filled steel tube combination column can intersect with a plurality of reinforced concrete girders at the same connecting node, a hole is formed in a steel tube at the intersected position between the concrete filled steel tube combination column and the corresponding reinforced concrete girders, two open holes are formed in the upper end and the lower end of each reinforced concrete girder and the upper end and the lower end of the combination column, the two open holes are respectively two upper open holes and two lower end open holes, longitudinal ribs in the reinforced concrete girders penetrate through the four open holes to be anchored in core concrete in the steel tubes, annular reinforcing plates are respectively arranged at the upper portions and the lower portions of the upper end open holes and the upper portions of the lower portions of the lower end open holes, and vertical reinforcing plates are arranged on the tube wall between the open holes with the smaller height distance. The connecting node is suitable for the situation where multiple girders obliquely intersect with each other at small angles, and the open holes on the tube wall are dense. When the section heights of the multiple girders are different, the longitudinal girder ribs can conveniently penetrate through the large open holes. The connecting node can effectively control the stress concentrate between open holes of the tube wall, meanwhile reinforces the loop functions of the tube wall where the open holes are formed and guarantees the anti-shock performance.
Description
Technical field
The utility model is a kind of concrete filled steel tube coupled column for structural engineering design and construction and the connected node of reinforced concrete beam, belongs to the innovative technology of the through connected node of concrete filled steel tube coupled column and reinforced concrete beam.
Background technology
Concrete filled steel tube coupled column has the advantages such as intensity is high, ductility is good, is applied in high-rise building design more and more.For guaranteeing anti-seismic performance and taking into account economy requirement, highrise building is preferential choice for use reinforced concrete beam often.Yet due to the existence of steel pipe, in reinforced concrete beam, vertical muscle is difficult to be anchored in coupled column node, and the design of the connected node of concrete filled steel tube coupled column and reinforced concrete beam becomes the Focal point and difficult point problem of composite column structure design.In China, the design of coupled column node conventionally can be divided into the through connection of beam steel and be connected two large classes with non-penetrating type.The method of using the earliest in through connection is out that aperture wears muscle method, and the small sircle hole that the vertical muscle of the major part of concrete beam is offered by steel pipe tube wall is anchored in concrete core district.The method limitation is applied to the situation of quadrature between the less and beam of vertical muscle in beam, and more for the vertical muscle quantity of the large beam of sectional dimension, it is large that tube wall is opened circular hole workload, and round orifices orientation technique is loaded down with trivial details, and construction is inconvenience very.The embodiment of non-penetrating type connected node is included in the method that Nodes concrete filled steel tube coupled column arranges the way of ring beam outward or establish reinforcing ring on steel pipe.Adopt reinforced concrete ring beam joint, although the puzzlement of having avoided the vertical muscle of beam to wear steel pipe also exists following shortcoming: ring beam protrusion node section can have influence on facade moulding on the one hand; On the other hand, in ring beam, steel hoop exists and conflicts when constructing with the reinforcing bar in post, beam section, is difficult to meet anchorage length requirement, and casting and compacting of concrete is difficult simultaneously, also has the problem of constructional difficulties.If the method for reinforcing ring is that the vertical muscle of beam is anchored on the reinforcing ring being arranged in steel pipe walls.For same node, comprise the situation that low-angle intersects beam and multiple different cross section height beam, it is higher that required precision is made in the design of its reinforcing ring of node of this set outer annular-stiffer and construction; And be only applicable to the not engineering of the superposed column of simultaneous construction of the outer concrete of steel pipe inner concrete and steel pipe.Therefore in the urgent need to carrying out the research of novel steel tube concrete combination column-steel concrete beam connecting node, novel joint need meet the effective anchoring of vertical muscle in node in beam and be transmitted in post to realize beam-ends internal force, and meets construction basic demand easily.
Utility model content
The purpose of this utility model is to provide a kind of concrete filled steel tube coupled column-steel concrete beam connecting node.The utility model is for concrete filled steel tube coupled column-reinforced concrete beam design of node and construction Difficulties, research and develop a kind of novel steel tube concrete combination column-steel concrete beam connecting node, be applicable to multiple tracks different cross section height reinforced concrete beam and intersect at concrete filled steel tube coupled column with right angle or low-angle, can realize beam-ends load is directly passed to core concrete, improve node globality, guarantee Seismic Behavior, and work progress is easy, is easy to apply.
The technical solution of the utility model is: concrete filled steel tube coupled column-steel concrete beam connecting node of the present utility model, concrete filled steel tube coupled column and multiple tracks reinforced concrete beam intersect at a connected node, concrete filled steel tube coupled column is provided with perforate on the steel pipe of corresponding reinforced concrete beam intersection area, the upper and lower end of each reinforced concrete beam and coupled column is respectively opened two perforates, respectively two upper end perforates and two lower end perforates, totally four perforates; In reinforced concrete beam, vertical muscle passes in four perforates from tube wall, is anchored in steel pipe inner core concrete; Respectively the upper and lower parts of upper end perforate and lower end perforate respectively arrange together with ring stiffener, on the tube wall between the less perforate of sustained height spacing, vertical stiffener is set.
The position of above-mentioned two upper end perforates and two lower end perforates is the longitudinal reinforcement of corresponding reinforced concrete beam top and bottom respectively, that is, and and gluten and end muscle.
The longitudinal reinforcement of above-mentioned reinforced concrete beam upper end, lower end is respectively through two upper end perforates and two lower end perforates.
The width of steel pipe walls and less 100 millimeters than Sectional Dimension of Reinforced Concrete Beam width between the upper end perforate of above-mentioned reinforced concrete beam and the overall width of lower end perforate and perforate.
In two of the upper ends perforate of above-mentioned each reinforced concrete beam of correspondence and the steel pipe walls between two lower end perforates, vertical stiffener is set respectively.
Above-mentioned when intersecting at concrete filled steel tube coupled column with multiple tracks reinforced concrete beam with low-angle, in the steel pipe walls between the perforate of adjacent beams, vertical stiffener is set.
Above-mentioned node respectively the upper and lower parts of upper end perforate and lower end perforate respectively arrange together with ring stiffener and ring stiffener, node totally 4 road ring stiffeners.
The utility model adopts the mode of large opening that arranges on steel pipe in concrete filled steel tube coupled column, solves the problem of the vertical muscle of reinforced concrete beam and joint anchorage.Large opening can realize the vertical muscle of beam and all or in the large opening of the overwhelming majority from steel pipe pass, and is anchored in steel pipe inner core concrete.The advantage that the vertical muscle of beam is anchored in core concrete is to make beam-ends load to be effectively transmitted to core concrete, force path directly, clearly, guarantee that beam column combined closely, improved the globality of structure, thereby realize the seismic design principle of " strong node " in seismic design.The vertical muscle that large opening mode can realize with the crossing multiple tracks beam of low-angle runs through core space simultaneously.Another advantage of large opening mode is that simple structure, construction are convenient, does not have the problem of reinforced steel bar perforation location difficulty.The method that the utility model employing arranges vertical stiffener and ring stiffener at large opening periphery solves the tube wall weakening problem that perforate brings.Vertically, ring stiffener position can regulate according to the position of different beam section heights and the crossing beam of low-angle.Theoretical research analytical proof, the utility model is by arranging the reinforcement measure of vertical stiffener and ring stiffener, steel pipe stress under geological process can keep elasticity or approach steel yield strength, and slight local damage only occurs rarely occurred earthquake effect lower node, possesses good anti-seismic performance; The stress that vertical stiffener can effectively be shared between tube wall perforate is concentrated, and this effect of sharing is tending towards obvious along with External Force Acting aggravation; Ring stiffener has been strengthened the cuff effect of perforate tube wall, to limit the concentrated range of scatter of steel pipe walls upper stress and to reduce the damage that steel pipe inner concrete causes due to perforate.The utility model is a kind of simple and convenient, simple structure of constructing, reasonable stress, convenient and practical novel steel tube concrete combination column and the through connected node of reinforced concrete beam.
Accompanying drawing explanation
Fig. 1 is the perforate elevational schematic view of the utility model concrete filled steel tube coupled column-reinforced concrete beam position of joints;
Fig. 2 is the relative position schematic diagram of reinforced concrete beam and node perforate in the utility model concrete filled steel tube coupled column-steel concrete girder connection;
Fig. 3 is the floor map of the utility model concrete filled steel tube coupled column-steel concrete girder connection;
Fig. 4 is the vertical muscle perforation of the utility model concrete filled steel tube coupled column-steel concrete girder connection central sill schematic diagram;
Fig. 5 is the utility model concrete filled steel tube coupled column-steel concrete girder connection upper end reinforcement for openings measure schematic diagram.
Fig. 6 is the utility model concrete filled steel tube coupled column-steel concrete girder connection lower end reinforcement for openings measure schematic diagram.
The specific embodiment
Embodiment:
Joint structure schematic diagram of the present utility model is as shown in Fig. 1,2,3,4,5,6.A kind of concrete filled steel tube coupled column-steel concrete beam connecting node of the present utility model, wherein on the steel pipe 2 in concrete filled steel tube coupled column 1 corresponding each with it crossing reinforced concrete beam four square large openings are set, see Fig. 1.Gluten and end muscle in two upper end perforates 3 and two vertical muscle of the corresponding reinforced concrete beam of lower end perforate 4 difference.In Fig. 2, shaded area 18 representatives are corresponding to the relative position of the Sectional Dimension of Reinforced Concrete Beam of upper end perforate 3 in Fig. 1 and lower end perforate 4.For avoiding perforate bight stress concentration phenomenon, in construction, require perforate bight that circular chamfering is set, as shown in Figure 1.
Figure 3 shows that and adopt coupled column node of the present utility model at the plane sectional drawing of upper end perforate, in node, there are four reinforced concrete beams 9,10,11,12 and coupled column to intersect, wherein three reinforced concrete beams 10,11,12 intersect with acute angle, and the percent opening of node one side reaches 48%.Between two upper end perforates of reinforced concrete beam 9,10,11,12, be provided with respectively vertical stiffener 13,7,14,15, all beams are also provided with vertical stiffener between the perforate of lower end, (not shown), vertical stiffener is welded in the steel pipe walls 2 between perforate.For with the crossing reinforced concrete beam 10,11 and 12 of low-angle, in steel pipe walls, between corresponding reinforced concrete beam 10 and the perforate of reinforced concrete beam 11, be provided with vertical stiffener 16, in steel pipe walls, between corresponding reinforced concrete beam 11 and the perforate of reinforced concrete beam 12, be provided with vertical stiffener 17, due to the excessive hole of causing of a STH, join together and cause that the effect of steel pipe cuff weakens or lost efficacy avoiding.Perforate upper and lower end arranges ring stiffener 5 and ring stiffener 6, as shown in Figure 1.In addition, all stiffeners are welded in steel pipe walls outside.
In the perforation location of reinforced concrete beam shown in Fig. 4, take reinforced concrete beam 10 as example, the vertical muscle 19 and 20 of the interior upper and lower end of reinforced concrete beam 10, respectively by two perforates of top and bottom, is anchored in steel pipe inner concrete.Perforation setting principle is: the vertical muscle of beam is adopted and muscle technology, i.e. the every adjacent 2 vertical muscle colligations of same row are integrated, and the vertical muscle Durchgangshohle overall width of a row can suitably be reduced; For reducing the rate that punches, in beam, the vertical muscle of row is divided into two rows through hole up and down.
Fig. 5 and Figure 6 shows that the stiffener schematic diagram that the utility model concrete filled steel tube coupled column-steel concrete girder connection reinforcement for openings measure adopts.In each node, for all upper and lower end perforates of crossing reinforced concrete beam with it, a set of stiffener is respectively set, stiffener corresponding to upper end perforate is Fig. 5, and the corresponding stiffener in lower end is Fig. 6.Every cover stiffener comprises two ring stiffeners and several vertical stiffener.The quantity of vertical stiffener determined by angle between the quantity of this node central sill and beam, as shown in Figure 3.In every cover stiffener, the spacing of two ring stiffeners is vertical stiffener height.The spacing of ring stiffener need consider the vertical muscle position of different beam sections in same node, with unified coordination, arranges.The width of ring stiffener and vertical stiffener should be consistent.
The utility model application example is as follows: CNOOC (Shenzhen) mansion is positioned at Hou Hai center, South Mountain, Shenzhen.Overall floorage 251,141m
2, superstructure area 204,642m
2, underground building area 46,499m
2.Building consists of two high buildings and podium, 45 layers on the ground of high buildings, underground 4 layers, main structure body overall height 199.6m, skeleton layer overall height 210m.It is the Super High synthesis project that integrates office, business.
Frame column in mansion high building adopts concrete filled steel tube coupled column, and Vierendeel girder adopts reinforced concrete beam, and Vierendeel girder, post node adopt the utility model node.Concrete filled steel tube coupled column diameter of section 1.2～1.3m, strength grade of concrete C60.Not etc., diameter of steel tube 0.8～0.9m, does not offer large opening shown in accompanying drawing explanation to thickness of steel pipe 24mm～32mm on position of joints steel pipe in post.Holes reinforced measure adopts stiffener shown in Fig. 4, and in reinforced concrete beam, vertical muscle is directly passed and is anchored in steel pipe inner concrete by perforate.The utilization of this novel practical has significantly reduced difficulty of construction, has improved the construction quality of node simultaneously, thereby improves speed of application, has reduced cost of investment.This project is at present in the construction stage, and coupled column node easily construction technology obtains the favorable comment approval of construction party.
Claims (7)
1. concrete filled steel tube coupled column-steel concrete beam connecting node, it is characterized in that concrete filled steel tube coupled column and multiple tracks reinforced concrete beam intersect at a connected node, concrete filled steel tube coupled column is provided with perforate on the steel pipe of corresponding reinforced concrete beam intersection area, the upper and lower end of each reinforced concrete beam and coupled column is respectively opened two perforates, respectively two upper end perforates and two lower end perforates, totally four perforates; In reinforced concrete beam, vertical muscle passes in four perforates from tube wall, is anchored in steel pipe inner core concrete; Respectively the upper and lower parts of upper end perforate and lower end perforate respectively arrange together with ring stiffener.
2. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 1, the longitudinal reinforcement that it is characterized in that the difference corresponding reinforced concrete beam top and bottom, position of above-mentioned two upper end perforates and two lower end perforates, that is, gluten and end muscle.
3. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 2, is characterized in that the longitudinal reinforcement of above-mentioned reinforced concrete beam upper end, lower end is respectively through two upper end perforates and two lower end perforates.
4. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 1, is characterized in that the width of steel pipe walls between the upper end perforate of above-mentioned reinforced concrete beam and the overall width of lower end perforate and perforate and less 100 millimeters than Sectional Dimension of Reinforced Concrete Beam width.
5. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 1, is characterized in that, in two of the upper ends perforate of above-mentioned each reinforced concrete beam of correspondence and the steel pipe walls between two lower end perforates, vertical stiffener is set respectively.
6. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 1, it is characterized in that above-mentionedly when intersecting at concrete filled steel tube coupled column with multiple tracks reinforced concrete beam with low-angle, in the steel pipe walls between the perforate of adjacent beams, vertical stiffener is set.
7. concrete filled steel tube coupled column-steel concrete beam connecting node according to claim 1, it is characterized in that above-mentioned node respectively the upper and lower parts of upper end perforate and lower end perforate respectively arrange together with ring stiffener, node totally 4 road ring stiffeners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487202.4U CN203403542U (en) | 2013-08-01 | 2013-08-01 | Connecting node between concrete filled steel tube combination column and reinforced concrete girders |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320487202.4U CN203403542U (en) | 2013-08-01 | 2013-08-01 | Connecting node between concrete filled steel tube combination column and reinforced concrete girders |
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| CN203403542U true CN203403542U (en) | 2014-01-22 |
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| CN201320487202.4U Expired - Fee Related CN203403542U (en) | 2013-08-01 | 2013-08-01 | Connecting node between concrete filled steel tube combination column and reinforced concrete girders |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397704A (en) * | 2013-08-01 | 2013-11-20 | 香港华艺设计顾问(深圳)有限公司 | Connected node of concrete filled steel tube combination column and reinforced concrete beams |
| CN104532964A (en) * | 2015-01-13 | 2015-04-22 | 济南轨道交通集团有限公司 | Building beam-column joint connecting structure and process |
| US10954662B1 (en) | 2020-08-05 | 2021-03-23 | King Saud University | System and method for connecting a square concrete-filled steel tubular column to a reinforced concrete footing |
-
2013
- 2013-08-01 CN CN201320487202.4U patent/CN203403542U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397704A (en) * | 2013-08-01 | 2013-11-20 | 香港华艺设计顾问(深圳)有限公司 | Connected node of concrete filled steel tube combination column and reinforced concrete beams |
| CN104532964A (en) * | 2015-01-13 | 2015-04-22 | 济南轨道交通集团有限公司 | Building beam-column joint connecting structure and process |
| US10954662B1 (en) | 2020-08-05 | 2021-03-23 | King Saud University | System and method for connecting a square concrete-filled steel tubular column to a reinforced concrete footing |
| US11639601B2 (en) | 2020-08-05 | 2023-05-02 | King Saud University | System and method for connecting a square concrete-filled steel tubular column to a reinforced concrete footing |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20200801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |