CN206667470U - A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device - Google Patents

A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device Download PDF

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Publication number
CN206667470U
CN206667470U CN201720145926.9U CN201720145926U CN206667470U CN 206667470 U CN206667470 U CN 206667470U CN 201720145926 U CN201720145926 U CN 201720145926U CN 206667470 U CN206667470 U CN 206667470U
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China
Prior art keywords
plate
steel
channel
flange
pipe column
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CN201720145926.9U
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Chinese (zh)
Inventor
张爱林
李超
姜子钦
吴颖霞
牟俊霖
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北京工业大学
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Priority to CN201720145926.9U priority Critical patent/CN206667470U/en
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Publication of CN206667470U publication Critical patent/CN206667470U/en

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Abstract

A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device, belongs to structural engineering field.A kind of end plate assembled channel-section steel for recovering function beam column node connection device that punches punches beam section and both attachment means form by the quadrate steel pipe column with cantilever beam section, channel-section steel.Nodal connection device welding portion of the present utility model is completed in factory, and weld seam precision and quality are more easy to control, and the punch space structure of beam section of channel-section steel runs through beneficial to pipeline;The channel-section steel beam that punches can be molded with floor in factory-assembled, form modular assembly unit, then each assembly unit punches beam with cantilever beam section quadrate steel pipe column realizing assembly connection by channel-section steel at the construction field (site).Node of the present utility model is that beam-ends is strengthened and cover plate connection weakens and with type node, triple power consumptions that bolt frictional slip is plastically deformed with edge of a wing connecting plate, bolt can be achieved, plastic hinge is transferred on cover plate and connecting plate, only needs to realize the functional rehabilitation of structure by changing connecting plate after shake.

Description

A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device
Technical field
This patent is related to a kind of end plate assembled channel-section steel for recovering function and punched beam column node connection device, belongs to structure Field of engineering technology.
Background technology
Assembled architecture system has short design and manufacture cycle, design production integration, labor strength is low, produces effect The remarkable advantages such as rate height, energy-conserving and environment-protective, overall economic efficiency be good, build as American-European-Japanese Ao Deng developed countries are important Residence form.
After northern ridge earthquake and Osaka-Kobe earthquake, people have been carried out extensively to beam column welding rigid connection node Slope protection And in-depth study, and propose the measure of a variety of improvement bean column node anti-seismic performances.Can be broadly divided into improves bean column node weldering Stitch performance and make plastic hinge two types, wherein the research to plastic hinge is on the high side.And Vierendeel girder passes through cantilever with post The connected mode of beam section, construction itself feature can be utilized place of the plastic hinge is moved outside cylinder, and utilize high-strength bolt Sliding is consumed energy.Under conditions of ensure bean column node intensity, protect bean column node from brittle break in this way. This beam-column connection is made up of two parts, first, Liang Yuzhu's is welded to connect, is completed by factory process;Second, Liang Yuliang Splicing, is completed at the construction field (site).Beam column is welded to connect processing and completed in factory, is not only easy to make but also make weld seam precision and matter Amount is guaranteed.Liang Liang splicings use high-strength friction bolt connection, quick and easy for installation.Due to only carrying out high-strength spiral shell in building site Bolt splices, it is not necessary to on-the-spot welding, is influenceed by place weather conditions smaller, greatly improves speed of application.Existing beam column Node is primarily present following shortcoming:1. beam-to-column joint uses the type of attachment of Site Welding more, weldquality can not be guaranteed, And brittle fracture easily occurs under geological process for the weld seam at beam-to-column joint;2. in adding for styletable use plus splice plate or haunch more Strong mode, a plurality of weld seam superposition, caused stress are complex.3. the installation and removal process of assembling type steel structure building can be with Full assembled is realized, but after shake in terms of reparation, it is no different with traditional steel building, can not realize " can quick-recovery function soon Assembled ".
To overcome above mentioned problem, the utility model patent proposes a kind of end plate assembled channel-section steel for recovering function and punched Beam column node connection device.
The utility model patent propose a kind of end plate assembled channel-section steel for recovering function punch bean column node connection dress Put, beam section is punched by the quadrate steel pipe column with cantilever beam section, channel-section steel and both attachment means form.Square steel tube with cantilever beam section Post is by upper quadrate steel pipe column, middle quadrate steel pipe column, lower quadrate steel pipe column, top square spacer plate, bottom square spacer plate and cantilever beam section web It is welded.Upper quadrate steel pipe column, middle quadrate steel pipe column weld with top square spacer plate respectively;Lower quadrate steel pipe column, middle quadrate steel pipe column point Do not welded with bottom square spacer plate.The channel-section steel beam section that punches is formed by connecting by two channel-section steels beam that punches by the 1st Bolt, and channel-section steel is opened Hole beam can be molded with floor in factory-assembled, form modular assembly unit, then each assembly unit passes through groove at the construction field (site) Steel punches beam with realizing assembly connection with cantilever beam section quadrate steel pipe column.Quadrate steel pipe column with cantilever beam section and channel-section steel punch beam section it Between attachment means by top flange upper junction plate, lower flange lower connecting plate, top flange lower connecting plate, lower flange upper junction plate, on Edge of a wing backing plate, lower flange backing plate, L-type connecting plate, channel-section steel punch beam end plate and high-strength bolt composition.
Top flange connecting plate and lower flange connecting plate in described attachment means can be not provided with dog bone and weaken area, also may be used To be arranged to, circular arc dog bone weakens area or flat dog bone weakening area, the size that dog bone weakens area design according to actual conditions.
It is hollow in described square steel tube column jecket, or casting concrete;Described quadrate steel pipe column also can be replaced round steel tubing string.
The nodal connection device can also use edge of a wing list cover plate type of attachment.
The content of the invention
Punch beam column node connection device, belong to the utility model proposes a kind of end plate assembled channel-section steel for recovering function Structural engineering field.Nodal connection device welding portion of the present utility model is completed in factory, its weld seam precision and quality More easy to control, luggage is entered in scene only with high-strength bolt and the splice plate beam section that punched to the quadrate steel pipe column with cantilever beam section and channel-section steel Match somebody with somebody, the fastening work of bolt is convenient and swift, and speed of application greatly improves with construction quality, adapts to the development of assembling type steel structure.
A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device, by the square steel with cantilever beam section Tubing string, channel-section steel punch beam section and both attachment means composition;
Quadrate steel pipe column with cantilever beam section is by upper quadrate steel pipe column, middle quadrate steel pipe column, lower quadrate steel pipe column, top square spacer plate, Bottom square spacer plate and cantilever beam section web are welded.Upper quadrate steel pipe column, middle quadrate steel pipe column weld with top square spacer plate respectively Connect;Lower quadrate steel pipe column, middle quadrate steel pipe column weld with bottom square spacer plate respectively;Cantilever beam section web surrounding is square with top respectively Dividing plate, middle quadrate steel pipe column and the welding of bottom square spacer plate;Wherein, top square spacer plate is divided into three parts with bottom square spacer plate, Respectively square loop section, square arc linkage section part, edge of a wing section part.Square loop section connects as reinforcing section, the square arc of nodes domains Section part is connect as the splicing part of beam end haunch part, edge of a wing section part as the beam section that punched with channel-section steel.Top it is square every Plate, the interior square chi cun of bottom square spacer plate are respectively less than square chi cun in quadrate steel pipe column, and foreign side's size is all higher than the outer square chi of quadrate steel pipe column It is very little, and square spacer plate thickness punches beam section edge of a wing thickness more than channel-section steel;
The channel-section steel beam section that punches is spliced by two channel-section steels beam that punches with bolt, and channel-section steel punches beam can be with floor in factory's group Dress up type, form modular assembly unit, then at the construction field (site) each assembly unit by channel-section steel punch beam with cantilever beam section Quadrate steel pipe column realizes assembly connection.Channel-section steel punch beam top flange and top flange upper junction plate, top flange backing plate and top flange under Connecting plate is formed by connecting by high-strength bolt, channel-section steel punch lower flange and the lower flange lower connecting plate of beam, lower flange backing plate and under Edge of a wing upper junction plate is formed by connecting by high-strength bolt, and punch beam section web side and channel-section steel of channel-section steel punches beam-ends plate weld;Together When, the channel-section steel beam end plate that punches is connected in the quadrate steel pipe column main body with cantilever beam section by high-strength bolt and L-type connecting plate;
The attachment means that quadrate steel pipe column and channel-section steel with cantilever beam section punch between beam section are by top flange upper junction plate, bottom wing Edge lower connecting plate, top flange lower connecting plate, lower flange upper junction plate, top flange backing plate, lower flange backing plate, L-type connecting plate, channel-section steel Punch beam end plate and high-strength bolt composition;
Top flange upper junction plate and top square spacer plate, channel-section steel punch beam section;Top flange lower connecting plate and top flange backing plate, Top flange upper junction plate;Lower flange upper junction plate and lower flange backing plate, lower flange lower connecting plate;L-type connecting plate and channel-section steel punch Beam end plate;Lower flange lower connecting plate and bottom square spacer plate, channel-section steel, which punch, to be connected by single row or multiple rows Bolt between beam section Connect;
Attachment means are first connected two channel-section steels beam that punches by the 1st Bolt in construction and installation, secondly, by bottom wing Edge lower connecting plate is connected by Bolt with bottom square spacer plate, lower flange upper junction plate, and lower flange backing plate and channel-section steel are punched Beam section is successively placed on overhanging lower flange lower connecting plate.Meanwhile L-type connecting plate and cantilever web are used by reserved screw Bolt connection.Finally, top flange upper junction plate is opened with top square spacer plate, top flange backing plate, channel-section steel respectively by Bolt The connection of hole beam section, L-type connecting plate and the channel-section steel beam end plate that punches are connected by Bolt, so far assembling completion;
Quadrate steel pipe column can manage interior hollow, or casting concrete, also can be replaced round steel tubing string;
Top flange connecting plate and lower flange connecting plate in described attachment means can be not provided with dog bone and weaken area, also may be used To be arranged to, circular arc dog bone weakens area or flat dog bone weakening area, the size that dog bone weakens area design according to actual conditions.
The nodal connection device can also use edge of a wing list cover plate type of attachment.
The advantages of this patent, is mainly manifested in the following aspects:
1st, existing assembling type steel structure system can not only be adapted to, and can be weaker with increasing by splicing design of node Add the thickness collective effect of square reinforcement dividing plate and reach power consumption and the purpose of plastic hinge, without take add cover plate, The beam-ends strengthening measure such as ribbed stiffener and side plate, reduces difficulty of construction, avoids the complicated stress field of a plurality of weld seam.
2nd, nodal connection device welding portion of the present utility model is completed in factory, and its weld seam precision and quality are more easy to Control, the live beam section that punched only with high-strength bolt, connecting plate and connector to the quadrate steel pipe column with cantilever beam section and channel-section steel are entered Luggage is matched somebody with somebody, and the fastening work of bolt is convenient and swift, and speed of application greatly improves with construction quality, adapts to the hair of assembling type steel structure Exhibition.
3rd, this node can also weaken the design parameters such as area's laying mode by adjustment bolt hole size, bolt and dog bone, To improve the ductility of node and turning power, and ensure that node has good energy dissipation capacity, can ensure to build in big shake Do not collapse, so as to the life security of protection staff.
4th, the channel-section steel beam that punches can realize running through for pipeline, greatly play the structural advantage of beam itself;Meanwhile two grooves The punch splicing of beam of steel is easy to implement punch beam and floor factory-assembled of channel-section steel and is molded to form modular assembly unit, is then applying Each assembly unit in work scene punches beam with realizing assembly connection with cantilever beam section quadrate steel pipe column by channel-section steel.
Brief description of the drawings
Fig. 1 be a kind of end plate assembled channel-section steel for recovering function punch beam column node connection device structural form three Dimension figure;
Fig. 2 be a kind of end plate assembled channel-section steel for recovering function punch beam column node connection device structural form three Tie up in-site installation figure;
Fig. 3 be a kind of end plate assembled channel-section steel for recovering function punch beam column node connection device structural form just View;
Fig. 4 be a kind of end plate assembled channel-section steel for recovering function punch beam column node connection device structural form side View;
Fig. 5 is that a kind of the punch structural form of beam column node connection device of the end plate assembled channel-section steel for recovering function is bowed View;
Fig. 6 is that a kind of end plate assembled channel-section steel for recovering function punches the construction of beam column node connection device (single cover plate) The graphics of form;
Fig. 7 is that a kind of end plate assembled channel-section steel for recovering function punches the edge of a wing connecting plate structure of beam column node connection device The top view of appearance formula;
Fig. 8 is that a kind of end plate assembled channel-section steel for recovering function punches the mould of beam column node connection device and floor composition The graphics of the structural form of block assembly unit;
Fig. 9 be a kind of end plate assembled channel-section steel for recovering function punch beam column node connection device 4 modules makeup The top view completed with unit assembling.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of this patent is described in detail.
As shown in figure 1, a kind of end plate assembled channel-section steel for recovering function punches, beam column node connection device includes following Part:
1 --- upper quadrate steel pipe column;
2 --- top square spacer plate;
3 --- middle quadrate steel pipe column;
4 --- bottom square spacer plate;
5 --- lower quadrate steel pipe column;
6 --- lower flange upper junction plate;
7 --- top flange upper junction plate;
8 --- L-type connecting plate;
9 --- cantilever beam section web;
10 --- lower flange backing plate;
11 --- lower flange lower connecting plate;
12 --- top flange lower connecting plate;
13 --- top flange backing plate;
14 --- the 1st Bolt;
15 --- channel-section steel punches beam;
16 --- channel-section steel punches beam end plate;
17 --- concrete floor;
18 --- modular assembly unit.
As shown in Fig. 1,3,4,5, the quadrate steel pipe column with cantilever beam section is by upper quadrate steel pipe column (1), middle quadrate steel pipe column (3), under Quadrate steel pipe column (5), top square spacer plate (2), bottom square spacer plate (4), cantilever beam section web (9) and composition cantilever beam section L-type Connecting plate (8).Upper quadrate steel pipe column (1), middle quadrate steel pipe column (3) weld with top square spacer plate (2) respectively;Lower quadrate steel pipe column (5), Middle quadrate steel pipe column (3) is welded with bottom square spacer plate (4) respectively;Cantilever beam section web (9) and middle quadrate steel pipe column (3), top side Shape dividing plate (2) and bottom square spacer plate (4) welding;Cantilever beam section web (9) and L-type connecting plate (8), top flange lower connecting plate (12), lower flange upper junction plate (6), top flange backing plate (13), lower flange backing plate (10), top flange upper junction plate (7) and bottom wing Edge lower connecting plate (11) is spliced.Wherein, top square spacer plate (2) is divided into three parts with bottom square spacer plate (4), is respectively Square loop section, square arc linkage section part, edge of a wing section part.Reinforcing section of the square loop section as nodes domains, square arc linkage section portion It is allocated as the splicing part of beam end haunch part, edge of a wing section part as the beam section that punched with channel-section steel.Top square spacer plate (2), The interior square chi cun of bottom square spacer plate (4) is respectively less than square chi cun in quadrate steel pipe column, and its foreign side's diameter is more than the outer square chi of quadrate steel pipe column It is very little, and square spacer plate thickness punches beam section edge of a wing thickness more than channel-section steel;
As shown in Fig. 2 channel-section steel punches, beam section punches beam (15) by channel-section steel and the first Bolt (14) is spliced;Channel-section steel is opened Hole beam end plate (16) and channel-section steel punch the welding of beam (15) web.
The attachment means that quadrate steel pipe column and channel-section steel with cantilever beam section punch between beam section by top flange upper junction plate (7), Lower flange lower connecting plate (11), L-type connecting plate (8), top flange backing plate (13), lower flange backing plate (10), top flange lower connecting plate (12), lower flange upper junction plate (6), channel-section steel punch beam end plate (16) and high-strength bolt composition.
Top flange upper junction plate (7) and top square spacer plate (2), channel-section steel punch beam section;Top flange lower connecting plate (12) and Top flange backing plate (13), top flange upper junction plate (7);Connect under lower flange upper junction plate (6) and lower flange backing plate (10), lower flange Fishplate bar (11);L-type connecting plate (8) and channel-section steel punch beam end plate (16);Lower flange lower connecting plate (11) and bottom square spacer plate (4), channel-section steel punches and connected by single row or multiple rows Bolt between beam section;
Upper quadrate steel pipe column (1), middle quadrate steel pipe column (3), lower quadrate steel pipe column (5) can manage interior hollow, or casting concrete;It is described Quadrate steel pipe column also can be replaced round steel tubing string;
As shown in fig. 7, top flange upper junction plate (7) and lower flange lower connecting plate (11), top flange lower connecting plate (12) and Lower flange upper junction plate (6) place can be not provided with dog bone and weaken area, can also be arranged to circular arc dog bone weakening area or flat dog bone is cut Weak area, the size that dog bone weakens area design according to actual conditions;
As shown in Fig. 2 at the scene in installation process, two channel-section steels beam (15) that punches first is passed through into the 1st Bolt (14) even Connect, secondly, lower flange lower connecting plate (11) is connected by Bolt and bottom square spacer plate (4), lower flange upper junction plate (6) Connect, by lower flange backing plate (10) and channel-section steel punch beam section successively be placed on overhanging lower flange lower connecting plate (11).Meanwhile by L Type connecting plate (8) is connected with cantilever web by reserved screw.Finally, top flange upper junction plate (7) is passed through into spiral shell The bolt group beam section that punched respectively with top square spacer plate (2), top flange backing plate (13), channel-section steel is connected, by L-type connecting plate (8) and groove The steel beam end plate (16) that punches is connected by Bolt, and so far assembling is completed.
Beam-column connection is using the double plates splicings in the edge of a wing, and when bean column node carries out on-site consolidation, channel-section steel punches beam section (15) it can ride on the lower flange lower connecting plate (11) connected with bottom square spacer plate (4), reduce hoisting difficulty, accelerate Construction speed, and assembling part step construction make channel-section steel punch beam section be in place afterwards with the engaged of cantilever beam section, easily Positioned in on-site consolidation.
As shown in fig. 6, the nodal connection device can also use edge of a wing list cover plate type of attachment.
As shown in Figure 8,9, the channel-section steel in the nodal connection device punch beam (15) can be with floor (17) in factory-assembled Shaping, formed modular assembly unit (18), then at the construction field (site) each assembly unit by channel-section steel punch beam with cantilever beam Section quadrate steel pipe column realizes assembly connection.

Claims (4)

  1. The beam column node connection device 1. a kind of end plate assembled channel-section steel for recovering function punches, it is characterised in that:By band cantilever Quadrate steel pipe column, the channel-section steel of beam section punch beam section and both attachment means composition;The described quadrate steel pipe column with cantilever beam section by Upper quadrate steel pipe column, middle quadrate steel pipe column, lower quadrate steel pipe column, top square spacer plate, bottom square spacer plate and the welding of cantilever beam section web Form;Upper quadrate steel pipe column, middle quadrate steel pipe column weld with top square spacer plate respectively;Lower quadrate steel pipe column, middle quadrate steel pipe column respectively with Bottom square spacer plate welding;Cantilever beam section web surrounding is welded with top square spacer plate, middle quadrate steel pipe column, bottom square spacer plate respectively Connect;Wherein, top square spacer plate is divided into three parts with bottom square spacer plate, respectively square loop section, circular sliding slopes section part, the wing Rim segment part;Square loop section is as the reinforcing sections of nodes domains, circular sliding slopes section part as beam end haunch part, edge of a wing section Splicing part of the part as the beam section that punched with channel-section steel;Top square spacer plate, the interior square chi cun of bottom square spacer plate are respectively less than side Square chi cun in steel pipe column, foreign side's size are all higher than quadrate steel pipe column foreign side size, and square spacer plate thickness punches beam section more than channel-section steel Edge of a wing thickness;The described channel-section steel beam section that punches is spliced by two channel-section steels beam that punches with bolt, and the channel-section steel beam that punches exists with floor Factory-assembled be molded, formed assembling modular unit, then at the construction field (site) assembling modular unit by channel-section steel punch beam with Band cantilever beam section quadrate steel pipe column realizes assembly connection;The described quadrate steel pipe column with cantilever beam section and channel-section steel punch between beam section Attachment means are by top flange upper junction plate, lower flange lower connecting plate, top flange lower connecting plate, lower flange upper junction plate, top flange Backing plate, lower flange backing plate, L-type connecting plate and high-strength bolt composition;Connected under described top flange upper junction plate, top flange Plate, top flange backing plate and top square spacer plate, channel-section steel punch and connected by single row or multiple rows Bolt between beam section;Lower flange Lower connecting plate, lower flange upper junction plate, lower flange backing plate and bottom square spacer plate, channel-section steel punch between beam section by single or Multiple rows of Bolt connection.
  2. The beam column node connection device 2. the end plate assembled channel-section steel according to claim 1 for recovering function punches, it is special Sign is:It is hollow in described square steel tube column jecket, or casting concrete;Described quadrate steel pipe column can replace with round steel tubing string.
  3. The beam column node connection device 3. the end plate assembled channel-section steel according to claim 1 for recovering function punches, it is special Sign is:Dog bone is not provided with described top flange connecting plate and lower flange connecting plate and weakens area, or is arranged to circular arc dog Bone weakens area or flat dog bone weakens area.
  4. The beam column node connection device 4. the end plate assembled channel-section steel according to claim 1 for recovering function punches, it is special Sign is:Described attachment means use edge of a wing list cover plate type of attachment, i.e., by by top flange lower connecting plate, top flange backing plate Removed with lower flange upper junction plate, lower flange backing plate to realize.
CN201720145926.9U 2017-02-17 2017-02-17 A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device CN206667470U (en)

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Application Number Priority Date Filing Date Title
CN201720145926.9U CN206667470U (en) 2017-02-17 2017-02-17 A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106677341A (en) * 2017-02-17 2017-05-17 北京工业大学 End plate assembled channel steel holed beam column node connecting device restorable in function
CN108166629A (en) * 2018-01-15 2018-06-15 福州大学 A kind of detachable assembling type steel core concrete column-connected mode and its construction method
CN108331223A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of bolted and welded connection quadrate steel pipe column-stealth beam floor assembly system
CN108331225A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of Z-type joint steel pipe concrete profiled pile-stealth beam floor assembly system
CN108331222A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of Z-type connection quadrate steel pipe column-stealth beam floor assembly system
CN108360725A (en) * 2018-02-12 2018-08-03 北京工业大学 A kind of Z-shaped connection steel reinforced concrete special-shape column-stealth beam floor assembly system
CN108374512A (en) * 2018-02-12 2018-08-07 北京工业大学 A kind of bolted and welded connection concrete filled steel tube special-shape column-stealth beam floor assembly system
WO2020244509A1 (en) * 2019-06-06 2020-12-10 青岛理工大学 Method for determining length of beam-column upper welded and lower bolted node lower flange splicing plate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106677341A (en) * 2017-02-17 2017-05-17 北京工业大学 End plate assembled channel steel holed beam column node connecting device restorable in function
CN108166629A (en) * 2018-01-15 2018-06-15 福州大学 A kind of detachable assembling type steel core concrete column-connected mode and its construction method
CN108331223A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of bolted and welded connection quadrate steel pipe column-stealth beam floor assembly system
CN108331225A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of Z-type joint steel pipe concrete profiled pile-stealth beam floor assembly system
CN108331222A (en) * 2018-02-12 2018-07-27 北京工业大学 A kind of Z-type connection quadrate steel pipe column-stealth beam floor assembly system
CN108360725A (en) * 2018-02-12 2018-08-03 北京工业大学 A kind of Z-shaped connection steel reinforced concrete special-shape column-stealth beam floor assembly system
CN108374512A (en) * 2018-02-12 2018-08-07 北京工业大学 A kind of bolted and welded connection concrete filled steel tube special-shape column-stealth beam floor assembly system
WO2020244509A1 (en) * 2019-06-06 2020-12-10 青岛理工大学 Method for determining length of beam-column upper welded and lower bolted node lower flange splicing plate

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