CN103104041A - Assembled framework beam-column joint adopting transverse connection and construction method thereof - Google Patents
Assembled framework beam-column joint adopting transverse connection and construction method thereof Download PDFInfo
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- CN103104041A CN103104041A CN2013100742806A CN201310074280A CN103104041A CN 103104041 A CN103104041 A CN 103104041A CN 2013100742806 A CN2013100742806 A CN 2013100742806A CN 201310074280 A CN201310074280 A CN 201310074280A CN 103104041 A CN103104041 A CN 103104041A
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Abstract
The invention relates to an assembled reinforced-concrete framework beam-column joint adopting transverse bolt connection. The joint comprises a hidden corbel arranged on a beam of a precast column, wherein hidden corbel bolt holes are transversely reserved in the hidden corbel; a notched groove matched with the hidden corbel is formed in the front/rear side face of an end-part connection part of a precast beam and is formed in a manner that the precast beam is notched towards one side of the precast beam from the vertical axis of the precast beam, the notched groove and the hidden corbel are the same in cross-section shape, and precast beam bolt holes are transversely reserved in corresponding positions of the bottom of the notched groove; and the transverse width of the hidden corbel is half that of the precast beam, the hidden corbel is embedded in the notched groove of the precast beam along the transverse direction, bolt cushion plates are arranged at the front and rear sides of an assembly which is formed after the hidden corbel is embedded in the notched groove of the precast beam, and bolts transversely penetrate through the bolt cushion plates, the hidden corbel bolt holes and the precast beam bolt holes so as to carry out fixing. A corresponding construction method comprises the steps of precasting, mounting and filling mortar in gaps. The joint and the corresponding construction method have the advantages that the internal force transmission between the precast beam and the precast column is clear, the joint is reliable in connection, the construction operation is simple, and the construction progress is accelerated.
Description
Technical field
The present invention relates to a kind of assembled steel reinforced concrete frame beam column node and job practices that adopts cross bolts to connect.
Background technology
The prefabricated assembling type reinforced concrete frame construction can improve the mechanized construction level, and accelerating construction progress reduces labour intensity, realizes industrialization of construction industry production, and is conducive to protection of the environment.This structural system is widely applied in developed country, and has become the principal mode of some national new buildings.Connected mode is the key problem of prefabricated assembling type reinforced concrete structure, is also the weak link of structure, as long as there is reliable connection the junction of prefabricated units, and guarantee structure safe and reliable.
The existing assembled steel reinforced concrete frame node connection reliability of China is poor, be difficult to satisfy the requirement of structure cracking resistance and the aspects such as globality, anti-seismic performance, this just needs the new dry type node of being convenient to the globality connection of exploitation, the process of producing to accelerate China's industrialization of construction industry.Novel assembled steel reinforced concrete frame link technique needs reliable quality of connection to realize transmitting by designing requirement the internal force of regulation, and guarantees the requirement of overall structure safety, globality; Then simplify as far as possible connect structure and construction technology, uncertain impact on structural performance in the reduction construction, the efficiency of construction that connects to improve node; Last assembling type node can not cause the problem on use and impression.
Summary of the invention
The invention provides a kind of assembled steel reinforced concrete frame beam column node and job practices that adopts cross bolts to connect, make the internal force transmission between prefabricated beam column clear and definite, node connects reliable; Node construction is simple to operate, has accelerated construction speed, can effectively enhance productivity; Node does not take unnecessary architectural space after connecting, has kept the attractive in appearance of architecture indoor.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of assembled steel reinforced concrete frame beam column node that adopts cross bolts to connect, comprise hidden bracket set on the beam of prefabricated post, and laterally reserve the hidden bracket bolt hole on hidden bracket; The front/rear side of junction, precast beam end is provided with the gap slot that coordinates with hidden bracket, described gap slot is for to begin to a side to cut out a breach from the precast beam vertical axis, the cross sectional shape of breach and hidden bracket is identical, and the precast beam bolt hole is laterally reserved on the edge on the correspondence position of gap slot bottom; Hidden bracket is precast beam along half of horizontal width along horizontal width, hidden bracket is mounted in the gap slot of precast beam along horizontal direction and the both sides, front and back of the combination after embedding are provided with the bolt backing plate, and bolt is fixed along being horizontally through bolt backing plate, hidden bracket bolt hole, precast beam bolt hole.
The hidden bracket cross section is rectangle or trapezoidal.
The gap slot surrounding of precast beam end and hidden bracket cross section surrounding arrange chamfer configuration.
Be provided with setting course between the hidden bracket of mutual build-in and precast beam, setting course is pea gravel concreten or cement mortar.
The bolt that exposes and the antirusting paint capping of bolt backing plate.
A kind of job practices of assembled steel reinforced concrete frame beam column node of horizontal connection, concrete steps are as follows:
(1) according to building structure grade, load, carry out the analysis of assembled steel tendon concrete frame structure across footpath, floor height design parameters, determine sectional dimension, the amount of reinforcement of precast beam and prefabricated post; Require the arrangement of reinforcement quantity of beam inside, calculative determination precast beam gap slot place according to the Nodes shear Design; Hidden bracket is short cantilever construction; Determine bolt quantity, arrangement form and bolting pad board size according to joints, bolt adopts plain bolt or frictional high-strength bolts;
(2) prefabricated post of prefabricated assembling type reinforced concrete and precast beam: by designing requirement at the prefabricated precast beam of precast yard with the prefabricated post of hidden bracket, wherein a side of the hidden bracket of prefabricated post is concordant with the precast beam vertical axis, the hidden bracket part that only keeps precast beam vertical axis one side is reserved the hidden bracket bolt hole that crosses hidden bracket in hidden bracket; The beam-ends of precast beam is made corresponding gap slot, namely begins to cut out a gap slot to a side from the precast beam vertical axis, and the cross sectional shape of gap slot and hidden bracket is identical, and correspondence position is also laterally reserved the precast beam bolt hole of equal number bottom gap slot; Carry out prefabricatedly according to traditional beam column method for prefabricating, only precast beam end side form is adjusted accordingly, after template support is complete, accurately locates precast beam bolt hole position, and bury the bolt hole pipeline underground, concreting, maintenance subsequently, prefabricated completing;
(3) assembled steel reinforced concrete precast beam and prefabricated post adopt the cross bolts node installation: with the precast beam of the prefabricated steel concrete of completing, prefabricated post is transported to builds the place, the prefabricated post of first mounting strap hidden bracket, after installation in position, then precast beam is lifted into the hidden bracket same level after, evenly lay one deck setting course in the gap slot of precast beam, setting course is pea gravel concreten or cement mortar, to strengthen the conjugation of hidden bracket and precast beam, slow transverse shifting Prefabricated bar body subsequently, make beam-ends gap slot parcel hidden bracket, realize both combinations, alignment error should satisfy allowable error, the periphery of beam-ends gap slot and hidden bracket arranges chamfer configuration and prevents that node stress is concentrated, at last, adjustment precast beam position makes the hidden bracket bolt hole of reservation in hidden bracket and the precast beam bolt hole horizontal alignment of the interior reservation of precast beam gap slot place's residue beam body, and then the erection bolt backing plate, wear bolt, with nut screwing clamping, be about to precast beam and hidden bracket and connect into integral body subsequently,
(4) assembled steel reinforced concrete prefabricated beam and prefabricated post adopt the cross bolts connected node that follow-up work is installed: after precast beam and hidden bracket connect into integral body, gap between prefabricated beam end gap slot and hidden bracket is filled up with cement mortar, and with all exerted bolts, the antirusting paint capping of nuts and bolt backing plate.
Node strength of the present invention is reliable, the breach of the hidden bracket of prefabricated post and corresponding precast beam end forms tenon structure, and adopt and laterally to wear bolt and connect into the construction measure such as whole and solved smooth-going vertical power transmission problem between prefabricated beam column, mounted configuration immediately can bearing load.Simultaneously prefabricated post is with the beam of certain-length, and Liang Yuzhu does not carry out assembling and connects on the beam column node core area territory, but the enterprising luggage accessory of the beam node location outside junctor now member, strong column and weak beam principle a little less than node by force, guaranteed the globality of bean column node.
The concrete beneficial effect of the present invention is:
1. adopt the mutual build-in of rectangle (or trapezoidal) hidden bracket and precast beam gap slot, then will both connect into integral body with bolt, make between prefabricated beam column power transmission clear and definite, the node connection is safe and reliable;
2. this bolt connection node simple structure, constructing operation is simple, has accelerated construction speed, can effectively enhance productivity;
3. hidden bracket is set is mounted in the interior form of precast beam gap slot, do not take architectural space, also do not affect structure use and attractive in appearance;
4. this node is applicable to different multilayer or high-rise assembled steel tendon concrete frame structures across the footpath.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the front elevation view with the prefabricated post of hidden bracket;
Fig. 4 is the side elevational view of Fig. 3;
Fig. 5 is the precast beam front elevation view;
Fig. 6 is the B-B sectional drawing of Fig. 5.
The specific embodiment
Embodiment: as shown in Fig. 1-6, a kind of assembled steel reinforced concrete frame beam column node that adopts cross bolts to connect, comprise hidden bracket set on the beam of prefabricated post 12, hidden bracket 2 cross sections are rectangle or trapezoidal, laterally reserve hidden bracket bolt hole 9 on hidden bracket 2; The front/rear side of precast beam 3 junctions, end is provided with the gap slot 6 that coordinates with hidden bracket 2, described gap slot 6 is for to begin to a side to cut out a breach from precast beam 3 vertical axis, breach is identical with the cross sectional shape of hidden bracket 2, notch size is slightly larger than hidden bracket, with convenient both build-ins, precast beam bolt hole 10 is laterally reserved on the edge on the correspondence position of gap slot 6 bottoms; Hidden bracket 2 is precast beam 3 along half of horizontal width along horizontal width, hidden bracket 2 is mounted in the gap slot 6 of precast beam 3 along horizontal direction and the both sides, front and back of the combination after embedding are provided with bolt backing plate 4, bolt 5 is fixed by nut 8 along being horizontally through bolt backing plate 4, hidden bracket bolt hole 9, precast beam bolt hole 10, make bracket 2 and precast beam 3 be linked to be integral body, can transmit beam-ends vertical shear and moment of flexure.Gap slot 6 surroundings of precast beam 3 ends and hidden bracket 2 cross section surroundings arrange chamfer configuration, stress occurs when avoiding blank area stressed concentrate.Be provided with setting course 7 between the hidden bracket 2 of mutual build-in and precast beam 3, setting course 7 be pea gravel concreten or cement mortar, makes hidden bracket 2 tightr with precast beam 3 combinations.The bolt 5 that exposes, nut 8 and bolt backing plate 4 antirusting paint capping.
Registration is wanted in the bolt hole position of precast beam bolt hole 10 and hidden bracket bolt hole 9, with guarantee both in conjunction with after, bolt hole left and right alignment, the convenient bolt of wearing smoothly.Should be noted the protection bolt hole in transportation and hoisting prefabricated member process, avoid impaired in the hole or cracking.Bolt can adopt plain bolt or frictional high-strength bolts, determines bolt quantity, arrangement form and back plate sizes according to force request.Hidden bracket 2 is short cantilever constructions, and is stressed comparatively complicated, should carry out the Reinforcement Design of longitudinal stress muscle, and encrypt stirrup in the overall length scope.
With precast beam 3 lifting to the same elevation of hidden bracket 2, hidden bracket 2 laterally is mounted in the gap slot 6 of precast beam 3, and align in precast beam bolt hole 10 left and right of the hidden bracket bolt hole 9 that guarantees hidden bracket 2 interior reservations and precast beam 3 interior reservations, then the erection bolt backing plate 4, wear bolt 5, subsequently nut 8 is tightened, made hidden bracket 2 and precast beam 3 be linked to be integral body, get final product subsequently bearing load.
A kind of job practices of assembled steel reinforced concrete frame beam column node of horizontal connection, concrete steps are as follows:
(1) according to building structure grade, load, carry out the analysis of assembled steel tendon concrete frame structure across footpath, floor height design parameters, determine sectional dimension, the amount of reinforcement of precast beam 3 and prefabricated post 1; Require the arrangement of reinforcement quantity of calculative determination precast beam 3 gap slot 6 beam inside, place according to the Nodes shear Design; Hidden bracket 2 is short cantilever constructions; Determine bolt 5 quantity, arrangement form and bolt backing plate 4 sizes according to joints, bolt 5 adopts plain bolt or frictional high-strength bolts;
(2) prefabricated post of prefabricated assembling type reinforced concrete and precast beam: by designing requirement at the prefabricated precast beam of precast yard 3 with the prefabricated post 1 of hidden bracket 2, wherein a side of the hidden bracket 2 of prefabricated post 1 is concordant with precast beam 3 vertical axis, hidden bracket 2 parts that only keep precast beam 3 vertical axis one sides are crossed the hidden bracket bolt hole 9 of hidden bracket 2 in the interior reservation of hidden bracket 2; The beam-ends of precast beam 3 is made corresponding gap slot 6, namely begin to cut out a gap slot 6 to a side from precast beam 3 vertical axis, gap slot 6 is identical with the cross sectional shape of hidden bracket 2, its cross sectional dimensions is more bigger than hidden bracket 2, with convenient both assemblings, also laterally reserve the precast beam bolt hole 10 of equal number at gap slot 6 bottom correspondence positions; Carry out prefabricatedly according to traditional beam column method for prefabricating, only precast beam 3 end side forms are adjusted accordingly, after template support is complete, accurately locates precast beam bolt hole 10 positions, and bury the bolt hole pipeline underground, concreting, maintenance subsequently, prefabricated completing;
(3) assembled steel reinforced concrete precast beam and prefabricated post adopt the cross bolts node installation: with the precast beam 3 of the prefabricated steel concrete of completing, prefabricated post 1 is transported to builds the place, the prefabricated post 1 of first mounting strap hidden bracket 2, after installation in position, then precast beam 3 is lifted into hidden bracket 2 same levels after, at the interior even laying one deck setting course 7 of the gap slot 6 of precast beam 3, setting course is pea gravel concreten or cement mortar, to strengthen the conjugation of hidden bracket 2 and precast beam 3, slow transverse shifting precast beam 3 beam bodies subsequently, make beam-ends gap slot 6 parcel hidden brackets 2, realize both combinations, alignment error should satisfy allowable error, the periphery of beam-ends gap slot 6 and hidden bracket 2 arranges chamfer configuration and prevents that node stress is concentrated, at last, adjustment precast beam 3 positions make the hidden bracket bolt hole 9 and precast beam 3 gap slot 6 interior precast beam bolt hole 10 horizontal alignments of reserving of places' residue beam bodies of reserving in hidden bracket, then the erection bolt backing plate 4, wear bolt 5, subsequently nut 8 is tightened, be about to precast beam 3 and connect into integral body with hidden bracket 2,
(4) assembled steel reinforced concrete prefabricated beam and prefabricated post adopt the cross bolts connected node that follow-up work is installed: after precast beam 3 and hidden bracket 2 connect into integral body, gap between precast beam 3 beam-ends gap slots 6 and hidden bracket 2 is filled up with cement mortar, and with all exerted bolts 5, nut 8 and bolt backing plate 4 antirusting paint capping.
The present invention is applicable to multilayer or high-rise assembled steel tendon concrete frame structure, also is applicable to different assembled steel tendon concrete frame structures across the footpath.
Employing forms tenon structure with the breach of the hidden bracket of prefabricated post and corresponding precast beam end, and adopts and laterally wear bolt and connect into whole grade for construction measure, makes the internal force transmission between prefabricated beam column clear and definite, and node connects reliably; This node construction is simple to operate, has accelerated construction speed, can effectively enhance productivity.Node does not take unnecessary architectural space after connecting, has kept the attractive in appearance of architecture indoor.
Claims (6)
1. an assembled steel reinforced concrete frame beam column node that adopts cross bolts to connect, is characterized in that: comprise hidden bracket set on the beam of prefabricated post, laterally reserve the hidden bracket bolt hole on hidden bracket; The front/rear side of junction, precast beam end is provided with the gap slot that coordinates with hidden bracket, described gap slot is for to begin to a side to cut out a breach from the precast beam vertical axis, the cross sectional shape of breach and hidden bracket is identical, and the precast beam bolt hole is laterally reserved on the edge on the correspondence position of gap slot bottom; Hidden bracket is precast beam along half of horizontal width along horizontal width, hidden bracket is mounted in the gap slot of precast beam along horizontal direction and the both sides, front and back of the combination after embedding are provided with the bolt backing plate, and bolt is fixed along being horizontally through bolt backing plate, hidden bracket bolt hole, precast beam bolt hole.
2. the assembled steel reinforced concrete frame beam column node that connects of employing cross bolts according to claim 1, it is characterized in that: the hidden bracket cross section is rectangle or trapezoidal.
3. the assembled steel reinforced concrete frame beam column node that connects of employing cross bolts according to claim 2 is characterized in that: the gap slot surrounding of precast beam end and hidden bracket cross section surrounding arrange chamfer configuration.
4. the assembled steel reinforced concrete frame beam column node that connects of employing cross bolts according to claim 3 is characterized in that: be provided with setting course between the hidden bracket of build-in mutually and precast beam, setting course is pea gravel concreten or cement mortar.
5. the assembled steel reinforced concrete frame beam column node of employing cross bolts connection according to claim 4, is characterized in that: the bolt that exposes, the antirusting paint capping of nuts and bolt backing plate.
6. the job practices of an assembled steel reinforced concrete frame beam column node that laterally connects, concrete steps are as follows:
(1) according to building structure grade, load, carry out the analysis of assembled steel tendon concrete frame structure across footpath, floor height design parameters, determine sectional dimension, the amount of reinforcement of precast beam and prefabricated post; Require the arrangement of reinforcement quantity of beam inside, calculative determination precast beam gap slot place according to the Nodes shear Design; Hidden bracket is short cantilever construction; Determine bolt quantity, arrangement form and bolting pad board size according to joints, bolt adopts plain bolt or frictional high-strength bolts;
(2) prefabricated post of prefabricated assembling type reinforced concrete and precast beam: by designing requirement at the prefabricated precast beam of precast yard with the prefabricated post of hidden bracket, wherein a side of the hidden bracket of prefabricated post is concordant with the precast beam vertical axis, the hidden bracket part that only keeps precast beam vertical axis one side is reserved the hidden bracket bolt hole that crosses hidden bracket in hidden bracket; The beam-ends of precast beam is made corresponding gap slot, namely begins to cut out a gap slot to a side from the precast beam vertical axis, and the cross sectional shape of gap slot and hidden bracket is identical, and correspondence position is also laterally reserved the precast beam bolt hole of equal number bottom gap slot; Carry out prefabricatedly according to traditional beam column method for prefabricating, only precast beam end side form is adjusted accordingly, after template support is complete, accurately locates precast beam bolt hole position, and bury the bolt hole pipeline underground, concreting, maintenance subsequently, prefabricated completing;
(3) assembled steel reinforced concrete precast beam and prefabricated post adopt the cross bolts node installation: with the precast beam of the prefabricated steel concrete of completing, prefabricated post is transported to builds the place, the prefabricated post of first mounting strap hidden bracket, after installation in position, then precast beam is lifted into the hidden bracket same level after, evenly lay one deck setting course in the gap slot of precast beam, setting course is pea gravel concreten or cement mortar, to strengthen the conjugation of hidden bracket and precast beam, slow transverse shifting Prefabricated bar body subsequently, make beam-ends gap slot parcel hidden bracket, realize both combinations, alignment error should satisfy allowable error, the periphery of beam-ends gap slot and hidden bracket arranges chamfer configuration and prevents that node stress is concentrated, at last, adjustment precast beam position makes the hidden bracket bolt hole of reservation in hidden bracket and the precast beam bolt hole horizontal alignment of the interior reservation of precast beam gap slot place's residue beam body, and then the erection bolt backing plate, wear bolt, with nut screwing clamping, be about to precast beam and hidden bracket and connect into integral body subsequently,
(4) assembled steel reinforced concrete prefabricated beam and prefabricated post adopt the cross bolts connected node that follow-up work is installed: after precast beam and hidden bracket connect into integral body, gap between prefabricated beam end gap slot and hidden bracket is filled up with cement mortar, and with all exerted bolts, the antirusting paint capping of nuts and bolt backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074280.6A CN103104041B (en) | 2013-03-08 | 2013-03-08 | A kind of adopt cross bolts to connect assembled steel reinforced concrete frame bean column node and construction method |
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| CN201310074280.6A CN103104041B (en) | 2013-03-08 | 2013-03-08 | A kind of adopt cross bolts to connect assembled steel reinforced concrete frame bean column node and construction method |
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| CN103104041A true CN103104041A (en) | 2013-05-15 |
| CN103104041B CN103104041B (en) | 2015-09-30 |
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| CN201310074280.6A Expired - Fee Related CN103104041B (en) | 2013-03-08 | 2013-03-08 | A kind of adopt cross bolts to connect assembled steel reinforced concrete frame bean column node and construction method |
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| CN103603435A (en) * | 2013-12-06 | 2014-02-26 | 金陵科技学院 | Assembled concrete seismic beam-column frame and construction method thereof |
| CN104032967A (en) * | 2014-06-30 | 2014-09-10 | 龙信建设集团有限公司 | Hoisting construction method for prefabricated assembly-type frame structure members |
| CN105133726A (en) * | 2015-09-25 | 2015-12-09 | 郑州大学 | Assembled monolithic concrete frame structure system and frame shear structure system formed by assembled monolithic concrete frame structure system |
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| CN105951985A (en) * | 2016-06-17 | 2016-09-21 | 华东建筑设计研究院有限公司 | Precast concrete frame beam joint |
| CN106285015A (en) * | 2015-05-28 | 2017-01-04 | 五冶集团上海有限公司 | Steel structural roof beam method for rapidly mounting based on location-plate |
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| CN103603435B (en) * | 2013-12-06 | 2015-11-04 | 金陵科技学院 | A kind of assembly concrete antidetonation beam column frame and construction method thereof |
| CN104032967A (en) * | 2014-06-30 | 2014-09-10 | 龙信建设集团有限公司 | Hoisting construction method for prefabricated assembly-type frame structure members |
| CN104032967B (en) * | 2014-06-30 | 2016-06-29 | 龙信建设集团有限公司 | Prefabricated assembled frame structure component construction method for hanging |
| CN106285015A (en) * | 2015-05-28 | 2017-01-04 | 五冶集团上海有限公司 | Steel structural roof beam method for rapidly mounting based on location-plate |
| CN105155773A (en) * | 2015-08-18 | 2015-12-16 | 同济大学 | Detachable concrete component constructing method |
| CN105155773B (en) * | 2015-08-18 | 2017-08-25 | 同济大学 | A kind of removable concrete component construction method |
| CN105133726A (en) * | 2015-09-25 | 2015-12-09 | 郑州大学 | Assembled monolithic concrete frame structure system and frame shear structure system formed by assembled monolithic concrete frame structure system |
| CN105951985A (en) * | 2016-06-17 | 2016-09-21 | 华东建筑设计研究院有限公司 | Precast concrete frame beam joint |
| CN106499054A (en) * | 2016-11-30 | 2017-03-15 | 上海建工二建集团有限公司 | Prefabricated assembled frame beam column structure and its construction method |
| CN107447920A (en) * | 2017-09-06 | 2017-12-08 | 广东弘信建设有限公司 | Assembled lintel |
| CN107558311A (en) * | 2017-09-14 | 2018-01-09 | 中铁第四勘察设计院集团有限公司 | A kind of lateral connection component for straddle type monorail rail tracks |
| CN109235638A (en) * | 2018-10-23 | 2019-01-18 | 王虹 | A kind of anti-seismic prefabricated bean column node and its construction method for assembled architecture |
| CN109235638B (en) * | 2018-10-23 | 2020-05-05 | 中贤建设集团有限公司 | Anti-seismic prefabricated beam-column joint for prefabricated building and construction method thereof |
| CN109162354A (en) * | 2018-10-25 | 2019-01-08 | 安徽建筑大学 | A kind of assembled connecting node of double brackets |
| CN109098282A (en) * | 2018-11-08 | 2018-12-28 | 安徽建筑大学 | A kind of connecting node of assembly concrete frame beam column |
| CN109296076A (en) * | 2018-12-04 | 2019-02-01 | 安徽建筑大学 | A kind of connecting node of concealed type assembling frame Structure Beam-column |
| CN109296076B (en) * | 2018-12-04 | 2024-04-30 | 安徽建筑大学 | Hidden type connecting node of beam column with assembled frame structure |
| CN109898653A (en) * | 2019-03-30 | 2019-06-18 | 中国二十二冶集团有限公司 | Box beam joint connection in site method |
| CN109881778A (en) * | 2019-04-15 | 2019-06-14 | 上海应用技术大学 | A kind of Prefabricated steel construction hidden bracket node and its construction method |
| CN112942945A (en) * | 2021-02-05 | 2021-06-11 | 绍兴文理学院 | Assembled tenon fourth of twelve earthly branches bracket type beam column node connecting device |
| CN113699869A (en) * | 2021-08-13 | 2021-11-26 | 浙江瓯越交建科技股份有限公司 | Prefabricated bridge plate connecting structure |
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| CN103104041B (en) | 2015-09-30 |
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