CN105863081B - Multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method - Google Patents
Multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method Download PDFInfo
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- CN105863081B CN105863081B CN201610343502.3A CN201610343502A CN105863081B CN 105863081 B CN105863081 B CN 105863081B CN 201610343502 A CN201610343502 A CN 201610343502A CN 105863081 B CN105863081 B CN 105863081B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 208
- 239000010959 steel Substances 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 10
- 241001669679 Eleotris Species 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 4
- 210000001015 abdomen Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 12
- 230000035515 penetration Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method, steel plate including being arranged on multi-cavity steel tube concrete coupled column both sides, the first otic placode is provided at the top of each steel plate, girder steel top flange is provided with upper cover plate, lower flange bottom is provided with the second otic placode, two angle cleats are provided at the web of girder steel, upper cover plate is connect with the first otic placode, and the second otic placode is connected with steel plate.The node assembling degree of the present invention is high, and multi-cavity steel tube concrete coupled column, steel plate, girder steel, upper cover plate, the second otic placode and angle cleat can be prefabricated in the factory completion, reduce the welding job amount of installation, in-site installation need to only position assembling.Joint form is simple, and assembling degree is high, quick and easy for installation.Due to being avoided during in-site installation using traditional penetration weld, traditional penetration weld easily makes steel generate larger welding residual stress so that the steel at node easily generate layering or brittle break.
Description
Technical field
The present invention relates to a kind of multi-cavity steel tube concrete composite column structure systems of construction engineering technical field, and in particular to
A kind of multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method.
Background technology
Multi-cavity steel tube concrete coupled column combined structure system is as a kind of novel concrete filled steel tube composite column structure body
System solves the problems, such as suspension column evagination in dwelling house system, while this new structural systen has given full play to steel pipe and concrete two
The strong point of kind of material has many advantages, such as high capacity, plasticity and good toughness, easy for construction.
China at present《Rectangular steel tube with concrete infilled technical regulation》(GECS159：2004) what is provided is used for steel tube concrete
Local soil type's zygostyle steel beam joint is mainly by the node for the forms such as internal partition formula, outer shroud be board-like.But up to the present, steel in the prior art
Pipe concrete coupled column is connect with steel beam joint to be had the following disadvantages：
(1) when the edge of a wing of the internal partition in connection with inner diaphragm and beam is in same level, node meets rigid joint
Requirement, but this node could be used when tubing string side is longer.Because the not only welding difficulty, but also will harm when the length of side is smaller
Pipe inner concrete is hindered to pour, in addition for flange of beam with internal partition in post jamb same place both sides melt-through weld, steel generate larger welding
Residual stress so that the steel at node easily generate layering or brittle break.
(2) architectural appearance and use are influenced.Such as outer shroud plate node, the node construction is simple, power transmission is clear and definite, not by steel pipe
The limitation of the length of side, but the intensity of sufficiently large horizontal ring flat-plate guarantee node is needed, steel using amount is bigger than inner diaphragm joint.And it is applied to
During edge-corner column, horizontal ring flat-plate not only interferes the installation of wallboard, but also reinforcing ring is caused to protrude elevation of building so that indoor exterior node
There is salient angle at place, influences perception, needs to solve by decoration or furred ceiling.
(3) node mechanical property and the simplification of construction, economy cannot be satisfactory to both parties.In practical applications, some node classes
Type mechanical property is preferable, the overall stiffness of node, but material utilization amount is big, and construction is complicated.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of multi-cavity steel tube concrete coupled column is bolted with girder steel
Node and assembly method, by using beam-ends and post jamb fate from full-height side plate, meet " strong column and weak beam, the strong weak structure of node
The design principle of part ", joint structure is simple, and power transmission is clear and definite, and assembling degree is high.
To achieve the above object, the invention is realized by the following technical scheme.
Multi-cavity steel tube concrete coupled column and girder steel bolt connection node, including being arranged on multi-cavity steel tube concrete coupled column
The steel plate of both sides, each steel plate top are provided with the first otic placode, and girder steel top flange is provided with upper cover plate, and lower flange bottom is provided with
Second otic placode is provided with two angle cleats at the web of girder steel, and upper cover plate is connect with the first otic placode, the second otic placode and steel plate phase
Even.
The multi-cavity steel tube concrete coupled column includes the sleeper positioned at both ends, is provided between two sleeper parallel
Web is connected by partition board between web.
The steel plate is arranged on by weld seam on multi-cavity steel tube concrete coupled column.
The upper cover plate is connect by bolt with steel plate.
First otic placode is connect by fillet weld with steel plate, and the second otic placode is connected by fillet weld with girder steel lower flange.
Locating holes are offered on each steel plate, hole is offered on angle cleat, by bolt by steel plate and joint angle
Steel is fixed.
The girder steel is steel I-beam.
The steel I-beam end set has ribbed stiffener.
The assembly method of a kind of multi-cavity steel tube concrete coupled column and girder steel bolt connection node, first passes through weld seam by steel plate
Multi-cavity steel tube concrete coupled column both sides are fixed on, the first otic placode of welding, obtains prefabricated multi-cavity at the top of each steel plate
Concrete filled steel tube coupled column；Upper cover plate on steel I-beam top flange is set, the second otic placode is welded on steel I-beam lower flange, it will
Two angle cleats are arranged at steel I-beam web, obtain prefabricated girder steel；Then by prefabricated multi-cavity steel tube coagulation
Local soil type's zygostyle and girder steel are transported to scene, by concreting in multi-cavity steel tube concrete coupled column, then by prefabricated steel
Beam is lifted into node region from the top down so that upper cover plate is contacted with the first otic placode, then using bolt by the first otic placode with it is upper
Cover board is fixed, and by angle cleat and Interal fixation, by the second otic placode and Interal fixation, completes assembling.
Compared with prior art, beneficial effects of the present invention are embodied in：
(1) present invention sets upper cover plate by setting the first otic placode on the steel plate of coupled column both sides in girder steel top flange,
The second otic placode is set in girder steel lower flange, is connect by upper cover plate with the first otic placode, the second otic placode is connect with steel plate, multi-cavity steel tube
Concrete column and girder steel dual-sided board rigid connection node connection mode and mode of transfer force are unique, detached with post jamb due to beam-ends and
The use of full-height side plate.Physical isolation between beam, column changes the Path of Force Transfer of conventional node, eliminates triaxial stress collection
In, plastic hinge can not only be made by being moved on on beam outside node, and eliminate the edge of a wing tear failure of conventional node column and node turn
The defects of kinetic force is to the dependence in column web weakness plate area.Meet the design and principle of " strong column and weak beam, the strong weak component of node ".
(2) due to the use of full-height steel plate, multi-cavity steel tube concrete combination shaft keeps integrality so that is mixed in steel pipe
Solidifying soil pours more convenient, is easily guaranteed that the pouring quality of nodes domains concrete.
(3) due to girder steel only by upper cover plate, the second otic placode and angle cleat by moment of flexure Shear transfer to dual-sided board (i.e.
Steel plate) so that girder steel can be detached with styletable, reduce the clear span of girder steel, can reduce steel depth of beam to a certain extent, full
Demand of the sufficient residential customer to residential function.
(4) node assembling degree of the invention is high, multi-cavity steel tube concrete coupled column, steel plate, girder steel, upper cover plate, the
Two otic placodes and angle cleat can be prefabricated in the factory completion, reduce the welding job amount of installation, in-site installation need to only position assembling.
Joint form is simple, and assembling degree is high, quick and easy for installation.Due to avoiding, using traditional penetration weld, passing during in-site installation
System penetration weld easily makes steel generate larger welding residual stress so that the steel at node easily generate layering or brittleness is broken
It is bad.
It is all connected during node in-site installation of the present invention using high-strength bolt, assembling degree is high, and node connection is reliable.
Further, since side plate and concrete filled steel tube coupled column only pass through solder design, concrete filled steel tube in outer post jamb
Inside is without weld seam, and compared with conventional node, the joint structure is simple, reasonable stress.
Description of the drawings
Fig. 1 is the schematic diagram of prefabricated multi-cavity steel tube concrete coupled column；
Fig. 2 is the schematic diagram of prefabricated girder steel.
Fig. 3 is the assembling schematic diagram of the present invention.
Fig. 4 surrenders schematic diagram for lower flange on beam.
There is plastic hinge schematic diagram for beam-ends in Fig. 5.
Fig. 6 destroys schematic diagram for cover board.
Fig. 7 destroys schematic diagram to be final.
Fig. 8 is hysteresis loop figure.
In figure, 1 is multi-cavity steel tube concrete coupled column, and 2 be girder steel, and 3 be steel plate, and 4 be upper cover plate, and 5 be the first otic placode, 6
It is bolt for angle cleat, 7,8 be the second otic placode.
Specific embodiment
It elaborates below in conjunction with the accompanying drawings to the embodiment of the present invention：The present embodiment is premised on technical solution of the present invention
Under implemented, give detailed embodiment and specific operating process, but protection scope of the present invention be not limited to it is following
Embodiment.
Referring to Fig. 3, the present invention includes being arranged on the steel plate 3 of multi-cavity steel tube concrete coupled column both sides, i.e. 2 steel plate settings
In multi-cavity steel tube concrete coupled column both sides, each 3 top of steel plate is provided with the first otic placode 5, the first otic placode 5 by fillet weld with
Steel plate 3 connects, and steel plate 3 is arranged on by weld seam on multi-cavity steel tube concrete coupled column.
Girder steel top flange is provided with upper cover plate 4, and upper cover plate 4 is connect by fillet weld with steel plate 3,4 and first ear of upper cover plate
Plate 5 is connected by bolt 7, and girder steel lower flange bottom is provided with the second otic placode 8, and the second otic placode 8 passes through fillet weld and girder steel
Lower flange is connected；Two angle cleats 6 are provided at the web of girder steel, angle cleat 6 by bolt with steel plate 3 is connected, is adopted
Second otic placode 8 is connected with steel plate with bolt 7.Girder steel is connected by upper cover plate, the first ribs, the second ribs in the present invention
In the overhanging end of the steel plate 3 of multi-cavity steel tube concrete coupled column both sides.
Multi-cavity steel tube concrete coupled column includes the sleeper positioned at both ends in the present invention, is provided between two sleeper equal
Capable web is connected by partition board between web, and concreting is wherein.
Locating holes are offered on each steel plate 3, hole is offered on angle cleat 6, are passed through on steel plate by bolt 7
Hole in locating holes and angle cleat, steel plate and angle cleat are fixed.
The girder steel is steel I-beam, and girder steel end set has ribbed stiffener.
The assembly method of above-mentioned multi-cavity steel tube concrete coupled column and girder steel bolt connection node, referring to Fig. 1, in advance in steel
Plate is fixed on multi-cavity steel tube concrete coupled column both sides according to Design Orientation trepanning, then by steel plate 3 by weld seam, then at each steel
The first otic placode 5 of setting, obtains prefabricated multi-cavity steel tube concrete coupled column at the top of plate；Referring to Fig. 2, first on angle cleat 6
Hole is opened up, then upper cover plate 4 is welded on the steel I-beam top flange with ribbed stiffener, is set on steel I-beam lower flange
Two angle cleats 6 are arranged at steel I-beam web, obtain prefabricated girder steel by the second otic placode 8；Referring to Fig. 3, then will
Prefabricated multi-cavity steel tube concrete coupled column and girder steel are transported to scene, and concreting is combined in multi-cavity steel tube concrete
In column, then prefabricated girder steel is lifted into node region from the top down so that upper cover plate 4 is contacted with the first otic placode 5, is then adopted
First otic placode 5 with upper cover plate 4 is fixed with strengthening stud 7, angle cleat 6 and steel plate 3 are fixed, by the second otic placode 8 and steel plate 3
It is fixed, complete assembling.
It can be prefabricated in the factory in the present invention and complete steel plate according to positioning welding in multi-cavity steel tube concrete coupled column both sides,
And in each 3 the first otic placode of top setting of steel plate.First prefabricated girder steel, upper cover plate and angle cleat in factory, then then at work
Upper cover plate is welded in girder steel top flange according to design size in factory and the second otic placode is welded under girder steel according to design size
The edge of a wing, by angle cleat weld according to location dimension at steel beam web plate, the above process be in the factory shift to an earlier date it is prefabricated,
The inconvenience of field fabrication is saved, improves efficiency.During in-site installation, girder steel is lifted from top to bottom and is positioned at node region,
Angle cleat is connected with the steel plate of multi-cavity steel tube concrete coupled column both sides by high-strength bolt, the position of fixed girder steel.
Node of the present invention has two big innovations：Beam-ends is with post jamb fate from the use with full-height side plate.Object between beam, column
Reason isolation changes the Path of Force Transfer of conventional node, eliminates triaxial stress concentration, can not only make plastic hinge by being moved outside node
Onto beam, and eliminate the dependence of the edge of a wing tear failure of conventional node column and joint rotation ability to column web weakness plate area
Defect.Meet the design and principle of " strong column and weak beam, the strong weak component of node ".Node can be divided into 2 parts respectively in factory simultaneously
Prefabricated completion, in-site installation only need to be assembled simply, and the simple assembling degree of joint structure is high.
The anti-seismic performance of the failure mode to the present invention and node illustrates below.
Now illustrate the mechanical property of novel joint using multi-cavity steel tube concrete coupled column-girder steel U-shaped rigid joint as row.
Finite element analysis, multi-cavity steel tube concrete coupled column of the node column for 200x600, Liang Cai are carried out to node using ABAQUS softwares
With the welding H-bar of H350x150x6x10, at node dual-sided board and cover sheet thickness with flange of beam with thick.Finite element analysis
As a result it is as follows.
1. failure mode
Multi-cavity steel tube concrete coupled column-girder steel rigid connection node of the present invention, due to using multi-cavity steel tube concrete
Coupled column, steel pipe have concrete stronger effect of contraction, and the bearing capacity and ductility of shaft entirety are relatively good, realize strong
The weak beam of column, the design requirement of the strong weak component of node.The destruction sequence of the connecting node of the present invention is as Figure 4-8.(1) work as level
When external force acts on, lower flange initially enters plasticity on node region beam-ends, and cover board and side plate are in addition to small part area of stress concentration
Domain surrender is outer, remaining most of region steel is still in elastic stage (as shown in Figure 4).(2) as external force increases, beam-ends prior to
There is plastic hinge (as shown in Figure 5) first in other parts, and deck portion region steel, which are surrendered, at this time enters the plastic stage, and side plate
Except small part area of stress concentration is overseas, most of region steel are still in elastic stage.(3) since the reinforcing of steel material is made
With when external force load persistently increases, cover board both sides are surrendered with side plate join domain steel plate shearing, and steel enter plasticity rank
Section, node side plate major part region is still in elastic stage at this time, and only small part stress raiser steel plate surrender is (such as Fig. 6 institutes
Show).(4) as shown in fig. 7, being continuously increased with load, structure is finally destroyed, lower flange buckling on beam-ends at this time, and side plate
Still only part enters the plastic stage, and the side plate of node region is most of still in elastic stage.
2. the anti-seismic performance of node
According to conceptual Design of Earthquake Resistance principle, structure should have multiple tracks and provide fortification against earthquakes line, avoid leading due to partial component is destroyed
Integral system is caused to destroy, while also requires structure that should have necessary intensity, good deformability and energy dissipation capacity.The present invention
Rigid connection node, in a manner that column is isolated with beam-ends, pass through the node connector that full-height side plate and cover board are formed
To transmit beam-ends moment of flexure and shearing.
Due to above-mentioned destruction sequence, when geological process, there is plastic hinge first in beam-ends, consumes certain seismic energy
Amount, back shroud shear yielding, further dissipate seismic energy, final when destroying, node region side plate only partly surrender into
Enter plasticity, it is most of still in elastic stage.Overall structure meets the design principle of " strong column and weak beam, the strong weak component of node ".
Before ductility refers to structure or destroys, bearing capacity without being subjected to inelastic deformation ability under conditions of significantly reducing,
In the Aseismic Design of structure, Ductility Index is a key property.Multi-cavity steel tube concrete coupled column-girder steel U-shaped has just connect section
The story drift of point is 7% -10%, meets China's code requirement.
When structure is in geological process, there are one energy absorptions and the time-continuing process to dissipate for structure.When structure enters bullet
During mecystasis, anti-seismic performance depends primarily on component energy dissipation capacity.The face that load phase curve is surrounded in hysteresis loop
Product can reflect that structure absorbs the size of energy；And the area that curve is surrounded when curve when unloading and loading is Dissipated energy
Amount.These energy be by the interior frictional resistance or local damage of material and will quantitative change in heat energy dissipation to space.Lost
Energy is more, and the possibility that structure is destroyed is smaller.Due to above-mentioned destruction of a node sequence, beam-ends and cover board successively dissipate largely
Seismic energy, final guarantee node have preferable energy dissipation capacity.As shown in figure 8, the hysteresis loop of node is full, it is not bright
Aobvious Draw shrinkage, dissipate a large amount of seismic energies, and the energy dissipation capacity of node is good, has stronger anti-seismic performance.
Claims (7)
1. multi-cavity steel tube concrete coupled column and girder steel bolt connection node, which is characterized in that mixed including being arranged on multi-cavity steel tube
The steel plate (3) of solidifying local soil type's zygostyle both sides, each steel plate (3) top are provided with the first otic placode (5), and girder steel top flange is provided with upper cover
Plate (4), lower flange bottom are provided with the second otic placode (8), and two angle cleats (6), upper cover plate (4) are provided at the web of girder steel
It is connect with the first otic placode (5), the second otic placode (8) is connected with steel plate (3)；
The multi-cavity steel tube concrete coupled column includes the sleeper positioned at both ends, and parallel abdomen is provided between two sleeper
Plate is connected by partition board between web；
The steel plate (3) is arranged on by weld seam on multi-cavity steel tube concrete coupled column.
2. multi-cavity steel tube concrete coupled column according to claim 1 and girder steel bolt connection node, which is characterized in that institute
Upper cover plate (4) is stated to connect with steel plate (3) by bolt.
3. multi-cavity steel tube concrete coupled column according to claim 1 and girder steel bolt connection node, which is characterized in that institute
It states the first otic placode (5) to connect with steel plate (3) by fillet weld, the second otic placode (8) is connected by fillet weld with girder steel lower flange.
4. multi-cavity steel tube concrete coupled column according to claim 1 and girder steel bolt connection node, which is characterized in that every
Locating holes are offered on a steel plate (3), angle cleat offers hole on (6), by bolt (7) by steel plate and angle cleat
It is fixed.
5. multi-cavity steel tube concrete coupled column according to claim 1 and girder steel bolt connection node, which is characterized in that institute
Girder steel is stated as steel I-beam.
6. multi-cavity steel tube concrete coupled column according to claim 5 and girder steel bolt connection node, which is characterized in that institute
Stating steel I-beam end set has ribbed stiffener.
7. the assembly method of a kind of multi-cavity steel tube concrete coupled column and girder steel bolt connection node, which is characterized in that first by steel
Plate (3) is fixed on multi-cavity steel tube concrete coupled column both sides by weld seam, the first otic placode of welding (5) at the top of each steel plate,
Obtain prefabricated multi-cavity steel tube concrete coupled column；Upper cover plate (4), steel I-beam bottom wing are set on steel I-beam top flange
The second otic placode (8) is welded on edge, two angle cleats (6) are arranged at steel I-beam web, obtain prefabricated girder steel；So
Prefabricated multi-cavity steel tube concrete coupled column and girder steel are transported to scene afterwards, by concreting in multi-cavity steel tube concrete
In coupled column, then prefabricated girder steel is lifted into node region from the top down so that upper cover plate (4) connects with the first otic placode (5)
It touches, it is then using bolt (7) that the first otic placode (5) and upper cover plate (4) is fixed, angle cleat (6) and steel plate (3) is fixed, it will
Second otic placode (8) is fixed with steel plate (3), completes assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343502.3A CN105863081B (en) | 2016-05-20 | 2016-05-20 | Multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method |
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| CN201610343502.3A CN105863081B (en) | 2016-05-20 | 2016-05-20 | Multi-cavity steel tube concrete coupled column and girder steel bolt connection node and assembly method |
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| CN105863081A CN105863081A (en) | 2016-08-17 |
| CN105863081B true CN105863081B (en) | 2018-07-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917471A (en) * | 2017-04-24 | 2017-07-04 | 西安建筑科技大学 | A kind of multi-cavity steel tube concrete coupled column of full solder type with side plate |
| CN108193771A (en) * | 2018-03-20 | 2018-06-22 | 辽宁工程技术大学 | A kind of assembling rectangular steel-tube concrete column-girder steel partition board perforation node |
| CN109848626B (en) * | 2019-03-22 | 2023-10-31 | 宝胜系统集成科技股份有限公司 | Welding angle deformation control tool for steel pipe combined column |
| CN113638496A (en) * | 2021-08-23 | 2021-11-12 | 沈阳建筑大学 | Square steel tube concrete column-steel beam outer ring cover plate connecting node |
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| CN102587577A (en) * | 2012-03-15 | 2012-07-18 | 天津大学 | Steel tube-I beam combination steel tube concrete special-shaped columns and manufacture method thereof |
| CN104100007A (en) * | 2014-07-16 | 2014-10-15 | 天元建设集团有限公司 | Double-lug-plate type square tube column and H-shaped steel frame variable-beam-depth assembly joint and construction method thereof |
| CN105155684A (en) * | 2015-08-14 | 2015-12-16 | 浙江东南网架股份有限公司 | Steel frame integrated member for concrete core tube structures and assembly method thereof |
| CN205637172U (en) * | 2016-05-20 | 2016-10-12 | 西安建筑科技大学 | Multicavity steel pipe -concrete composite post and girder steel bolted connection node |
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