NL2027578B1 - Prefabricated concrete structure beam-column dry-wet combined connection construction and implementation method thereof - Google Patents
Prefabricated concrete structure beam-column dry-wet combined connection construction and implementation method thereof Download PDFInfo
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- NL2027578B1 NL2027578B1 NL2027578A NL2027578A NL2027578B1 NL 2027578 B1 NL2027578 B1 NL 2027578B1 NL 2027578 A NL2027578 A NL 2027578A NL 2027578 A NL2027578 A NL 2027578A NL 2027578 B1 NL2027578 B1 NL 2027578B1
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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
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
- E04B2001/2478—Profile filled with concrete
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Abstract
The present invention provides a prefabricated concrete structure beam-column dry-wet combined connection construction and an implementation method, which is 5 related to the technical field of prefabricated buildings. A cylindrical cavity structure is provided at an intersection of the transverse beam and the longitudinal beam, the cylinder cavity structure includes an outer cylinder and an inner cylinder; the outer cylinder and the inner cylinder are enclosed so as to form a square annular cavity, and four corners of the square annular cavity are provided with column corner longitudinal 10 steel bars I and column corner longitudinal steel bars 11, and transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars in the transverse beam and the longitudinal beam pass through the outer cylinder and the inner cylinder in turn, and inner ends of the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars are connected to anchor heads. The 15 present invention forms a modular beam-column node core area connection construction through the construction of the inner cylinder and the outer cylinder, and solves the problems in the anchoring connection of beams with multi-directional steel bars, column longitudinal steel bars, complex intersection anchoring connection of stirrup crossing, and installation, thereby saves the process links and construction costs 20 of supporting formwork and support, and has the advantages and characteristics of modularization, integration and informationization.
Description
-1- PREFABRICATED CONCRETE STRUCTURE BEAM-COLUMN DRY-WET
METHOD THEREOF Technical Field
[0001] The present invention relates to the technical tield of prefabricated buildings, and more particularly to a prefabricated concrete structure beam-column dry-wet combined connection construction and an implementation method thereof. Background
[0002] Prefabricated buildings are industrialized buildings assembled by reliable connections of building structural components, building components and parts, electromechanical equipment, etc., consist of prefabricated concrete structures, steel structures, wood structures, and mixed structures. Prefabricated concrete buildings, as one of the main forms of prefabricated buildings in China, is an important part of new industrialization and an important way to realize the modernization of the construction industry. The use of prefabricated buildings is conducive to increasing the quality, efficiency and benefits of construction projects, improving the labor environment and saving labor; and it is advantageous in building energy-saving, emission reduction, and resource conservation.
[0003] By contrast to cast-in-place concrete buildings, the main components of the prefabricated concrete structure are prefabricated in the factories or on-site, and mechanized hoisting is adopted for its fast construction speed, effective cost reduction, and effective shortening of project construction period, which enlarges the development of prefabricated buildings conforms to the National "13th Five-Year" Development Plan and the National Plan for Medium and Long Term Scientific and Technological Development Plan. With labor shortages, labor costs rising sharply, the proportion of human resource costs rising sharply, and the implementation of the national development strategy of new industrialization, informationization, and urbanization, the development of prefabricated buildings is facing unprecedented opportunities and challenges.
[0004] Prefabricated concrete structures include prefabricated monolithic concrete structures and fully prefabricated concrete structures. At present, most domestic multi- story and all high-rise prefabricated concrete structures use prefabricated concrete
-2- structures. The connection of the prefabricated monolithic concrete structure takes the "wet connection" as the main method to ensure the overall performance of the prefabricated structure, so that its structural performance is basically equivalent to that of cast-in-place concrete. The currently released Technical Specifications for Prefabricated Concrete Structures JGJ 1-2014, Technical Standard for Assembled Buildings With Concrete Structure GB/T 51231-2016, and Prefabricated Concrete Connection Node Construction 15G310-12 focus on the prefabricated monolithic concrete structure based on wet connection, and the fully prefabricated concrete structure does not meet the prefabricated concrete structure required for integrally prefabricating, which is rarely used in domestic engineering projects, and there is no specification and technical standard to follow.
[0005] The process of wet connection adopts the principle of equivalent to cast-in- place, which is the main connection node method of domestic prefabricated concrete structures. Its advantage is that while the process of wet connection is equivalent to cast-in-place, its integrity and seismic performance are better. But its disadvantages are the complex node structure, the conflict of steel bars, the significant contradiction of reinforcement anchoring and the connection technology. To promote the development of industrialization, modernization, and informationization of prefabricated buildings, technical problems that still need to be solved include the key process links such as formwork, reinforcement, concrete, grouting, hoisting, support, and maintenance. Therefore, there is an urgent need to solve technical problems in prefabricated concrete frame structure, shear wall structure connection node construction, technology, construction method, etc. in order to promote the healthy and orderly development of prefabricated concrete structure.
[0006] In summary, the connection construction of the beam-column nodes in the prefabricated concrete frame structure adopts wet connection. The core area of the beam-column node has a problem that vertical column longitudinal steel bars, stirrups, and multiple-directional longitudinal steel bars in the beam body intersect in the node core area. The existing main construction inconveniences and difficulties include: 1) conflict of the position of the steel bars; there are many steel bars, dense locations, large lengths of steel anchors in the node area or bending anchors, especially the prefabricated installation of longitudinal steel bars in the four directions of the longitudinal and horizontal beams in the node core area is difficult to avoid;
-3- 2) inconvenience of lifting and installation during construction, and the difficulty of lifting in place due to the location and installation of the steel bars; and 3) shape of the node area is complex, the vertical steel bars of the column, the stirrups, the vertical and horizontal steel bars of the beam body intersect, and the wet construction has problems such as supporting formwork, pouring concrete, supporting and inconvenient erection of the frame; the problems in wet construction are not conducive to the development and advancement of industrialization, informationization, and modular construction of prefabricated concrete structures. Summary
[0007] In order to solve the problems and shortcomings of the prefabricated concrete structure node construction and promote the development of prefabricated building industrialization, modularization, integration and informationization, the present invention provides a prefabricated concrete structure beam-column dry-wet combined connection construction and an implementation method thereof.
[0008] The present invention is implemented by the following technical solutions: a prefabricated concrete structure beam-column dry-wet combined connection construction, includes a transverse beam and a longitudinal beam, and a cylindrical cavity structure is provided at an intersection of the transverse beam and the longitudinal beam; the cylinder cavity structure includes an outer cylinder and an inner cylinder; the outer cylinder and the inner cylinder are enclosed so as to form a square annular cavity, and four corners of the square annular cavity are provided with column corner longitudinal steel bars I and column corner longitudinal steel bars II; and transverse beam longitudinal steel bars and longitudinal beam longitudinal steel bars in the transverse beam and the longitudinal beam pass through the outer cylinder and the inner cylinder in turn, and inner ends of the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars are connected to anchor heads.
[0009] Preferably, the outer cylinder comprises an outer cylinder plate I and an outer cylinder plate II in L-shaped, and the outer cylinder plate I and the outer cylinder plate IT are spliced into a rectangle; the outer cylinder plate I and the outer cylinder plate IT are provided with U-shaped grooves corresponding to cross-sectional positions of the transverse beam and the longitudinal beam; the number of the U-shaped grooves on each side is the same as the number of the corresponding transverse beam longitudinal steel bars and longitudinal beam longitudinal steel bars, a width of the U-shaped
-4- groove is 10 mm larger than a diameter of the corresponding transverse beam longitudinal steel bars and longitudinal beam longitudinal steel bars, and a depth of the U-shaped groove is not less than a thickness of a protective layer plussing 30 mm; and the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars pass through the corresponding U-shaped grooves.
[0010] Preferably, a minimum thickness of the outer cylinder plate I and the outer cylinder plate IT shall not be less than Smm, the outer cylinder plate I and the outer cylinder plate II are processed by Q235 steel or molded by the high-performance UHPC concrete.
[0011] Preferably, the inner cylinder includes two inner horizontal sub-plates and two inner longitudinal sub-plates with similar structures, and the two inner horizontal sub- plates and two inner longitudinal sub-plates intersect into a grille shape. The inner horizontal sub-plate includes a web. The upper two sides of the web are connected to upper flange plates, and the lower two sides of the web are connected to lower flange plates. Both the upper and lower sides of the web are concave-convex grille plates. The concave-convex grille plates are opposed to the corresponding transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars, and the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars pass through grooves in the corresponding concave-convex grille plates.
[0012] Preferably, two ends of the concave-convex grille plate are provided with connecting pin keys; the two ends of the inner horizontal sub-plate are correspondingly connected to the inner horizontal gusset plate and the inner longitudinal gusset plate through the connecting pin keys.
[0013] Preferably, a connector connecting the outer cylinder and the inner cylinder is provided in the square annular cavity, and the connector is HPB300 steel bar with a diameter of not less than 20 mm; two ends of the connector are connected to the outer cylinder and the inner cylinder by welding or mechanical connection; and a vertical installation distance of the connector is not less than 300 mm.
[0014] Preferably, the transverse beam longitudinal steel bars and the longitudinal beam longitudinal steel bars adopt large-diameter steel bars, where a clear distance of the steel bars is not less than 30 mm and the larger value of the steel bar diameter; and a length of the steel bars in the beam body is a sum of an outer section size L1 of the outer cylinder and the inner cylinder, a length L2 of the anchor head, and a
-5- construction allowable deviation L3, and the length of the steel bar in the beam body is not less than 15d, where d is the diameter of the steel bar.
[0015] Preferably, the column corner longitudinal steel bars I and column corner longitudinal steel bars II are centrally arranged at four corners of the square annular cavity, and the column corner longitudinal steel bars I and the column corner longitudinal steel bars IT adopt large-diameter steel bars, the length of the column corner longitudinal steel bars I and column corner longitudinal steel bars II meets a sum of a node core area section height H1 and an anchoring connection length H2, and the number of the steel bars in the square annular cavity corner region is not less than 50% of the reinforcement of the section and not less than 4 steel bars.
[0016] An implementing method of the prefabricated concrete structure beam-column dry-wet combined connection construction, step 1: splitting prefabricated components of a concrete frame structure; splitting the concrete frame structure into parts capable of being manufactured and constructed, in regions of transverse beams, longitudinal beams, an upper body, a lower body, and a core node area according to the design drawings and using a BIM information model of REVIT or PLANBAR; step 2: deepening designs of components with beam-column core nodes; according to the combination of structural columns and structural beams, dividing them into side column nodes, center column nodes, and corner column nodes, and then combining relevant information of columns, beams and nodes for further optimization and integration; and optimization, integration, merging and combination of node types; step 3: processing and manufacturing of the cylindrical cavity structure; combining the optimized node and connection construction type, making a processing plan, controlling processing accuracy, reviewing quality of processed parts, and then performing assembly verification, controlling a deviation of internal and external dimension of the processing within 1-2 mm; content of inspection including size deviation, section position, U-shaped groove, concave-convex grille plate, corner region, connector position, material strength and thickness of inner and outer cylinders; the processed cylinder cavity structure being classified and stacked, and implanted chips and numbered for use; and
-6- step 4: construction of dry-wet combined connection node; the process is: construction preparation— column installation — cylindrical cavity structure installation — installation location, elevation, section information inspection — beam support structure installation — transverse beam installation — transverse beam steel bar inserting in the cylindrical cavity structure — longitudinal beam installation — longitudinal beam steel bar inserting into the cylindrical cavity structure — beam installation quality inspection — install inner transverse gusset plate and inner longitudinal gusset plate — concealed acceptance — grouting.
[0017] By contrast to the prior art, the present invention has the advantageous effects of forming a skeleton structure of the beam-column node core area through the construction of the inner cylinder and the outer cylinder, and accurately and uniformly leaving the beam steel bar, and adopting mechanical and extrusion anchoring connection method forms a modular structure of the beam-column node core area connection construction. Its beneficial effects include: (1) it is conducive to the formation of the double hoop effect of the inner cylinder and the outer cylinder in the beam-column node core area, the mechanical anchoring effect of the anchoring end, and the internal supporting effect of the male and female connector; (2) it superimposed the coupling effect increases the strength of the concrete in the node core area and strengthens the bonding effect of reinforced concrete, which can effectively reduce the anchoring length of the steel bar in the node core area, avoiding the complicated method of bending anchorage due to insufficient anchoring length, and improves the node assembly construction efficiency; and (3) it solves the inconvenience and problems in the anchoring connection of beams with multi-directional steel bars, column longitudinal steel bars, stirrup crossing, and installation, saves the process links and construction costs of supporting formwork and support, forms a modularized, integrated and informationized prefabricated concrete structure beam-column dry-wet combined connection construction.
Brief Description of the Drawings
[0018] Figure. 1 is a plan view of a prefabricated concrete structure beam-column dry- wet combined connection construction according to embodiment I of the present invention;
-7- Figure. 2 is a schematic diagram of the composition of an inner horizontal sub-board according to embodiment I of the present invention; and Figure 3 is a schematic diagram of an inner horizontal gusset plate according to Embodiment I of the present invention.
Inthe drawings, 1-outer cylinder, 2-inner horizontal sub-plate, 3-inner longitudinal sub-plate, 4-inner horizontal gusset plate, 5-inner longitudinal gusset plate, 6-male and female connector, 7-transverse beam, 8-longitudinal beam, 9-transverse beam longitudinal steel bars, 10-longitudinal beam longitudinal steel bars, 11-column corner longitudinal steel bars I, 12-column corner longitudinal steel bars II, 13-anchor head; 1-1 outer cylinder plate I, 1-2 outer cylinder plate II; 2-1 web, 2-2 upper flange plate, 2-3 lower flange plate, 2-4 concave-convex grille plate, 2-5 connecting pin key; and 4- 1 upper reset cover plate of gusset plate, 4-2 lower reset cover plate of gusset plate. Detailed Description of the Embodiments
[0019] The following are specific embodiments of the present invention, and the present invention will be further described with reference to the accompanying drawings.
[0020] Embodiment I Taking the prefabricated concrete frame structure as an example, the beam adopts prefabricated laminated beam, the maximum size of the beam section is 300900, the column adopts a prefabricated column with a column section size of 600-800 mm, the beam-column longitudinal force steel bar adopts HRB400 with a diameter of 22-28. The beam-column node adopts a prefabricated concrete structure beam-column dry- wet combined connection construction of the present invention.
[0021] As shown in Figures. 1-3, a prefabricated concrete structure beam-column dry- wet combined connection construction, an intersection of the transverse beam 7 and the longitudinal beam 8 is a node core area, and the node core area includes a cylindrical cavity structure. The cylinder cavity structure includes an outer cylinder 1 and an inner cylinder. The outer cylinder 1 and the inner cylinder are enclosed so as to form a square annular cavity. The four corners of the square annular cavity are provided with column corner longitudinal steel bars I 11 and column corner longitudinal steel bars II 12. The transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 in the transverse beams 7 and the longitudinal beam 8 pass through the outer cylinder 1 and the inner cylinder in turn.
-8- The inner ends of the transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 are connected to anchor heads 13.
[0022] Further, the outer cylinder 1 includes an outer cylinder plate I 1-1 and an outer cylinder plate II 1-2 in L-shaped, and the outer cylinder plate I 1-1 and the outer cylinder plate II 1-2 are spliced into a rectangle. The outer cylinder plate I 1-1 and the outer cylinder plate II 1-2 are provided with U-shaped grooves corresponding to the cross-sectional positions of the transverse beam 7 and the longitudinal beam 8. The number of U-shaped grooves on each side is the same as the number of the corresponding transverse beam longitudinal steel bars 9 and longitudinal beam longitudinal steel bars 10, a width of the U-shaped groove is 10 mm larger than a diameter of the corresponding transverse beam longitudinal steel bars 9 and longitudinal beam longitudinal steel bars 10, and a depth of the U-shaped groove is not less than a thickness of a protective layer plussing 30 mm, where the protective layer is the thickness of the protective layer of the reinforced concrete, which is selected according to the environmental category and design. The transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 pass through the corresponding U-shaped grooves.
[0023] The minimum thickness of the outer cylinder plate I 1-1 and the outer cylinder plate II 1-2 is not less than Smm. The outer cylinder plate I 1-1 and the outer cylinder plate II 1-2 are processed by Q235 steel or molded by the high-performance UHPC concrete.
[0024] Further, as shown in Figure 2, the inner cylinder includes two inner horizontal sub-plates 2 and two inner longitudinal sub-plates 3 with similar structures. The two inner horizontal sub-plates 2 and two inner longitudinal sub-plates 3 intersect into a grille shape. Taking the inner horizontal sub-plate 2 as an example: the inner horizontal sub-plate 2 includes a web 2-1; the upper two sides of the web 2-1 are connected to upper flange plates 2-2, and the lower two sides of the web 2-1 are connected to lower flange plates 2-3; and both the upper and lower sides of the web 2-1 are concave-convex grille plates 2-4. The concave-convex grille plates 2-4 are opposed to the corresponding transverse beam longitudinal steel bars 9 and longitudinal beam longitudinal steel bars 10, and the transverse beam longitudinal steel
-9- bars 9 and the longitudinal beam longitudinal steel bars 10 pass through the grooves in the corresponding concave-convex grille plates 2-4.
[0025] Two ends of the concave-convex grille plate 2-4 are provided with connecting pin keys 2-5; the two ends of the inner horizontal sub-plate 2 are correspondingly connected to the inner horizontal gusset plate 4 and the inner longitudinal gusset plate 5 through the connecting pin keys 2-5. The longitudinal steel bars in the beam body are placed in the grooves of the concave-convex grille plate and the U-shaped grooves, and then covered by the inner horizontal gusset plate 4 and the inner longitudinal gusset plate 5.
[0026] Further, a connector 6 connecting the outer cylinder 1 and the inner cylinder is provided in the square annular cavity, and the connector 6 is HPB300 steel bar with a diameter of not less than 20 mm. Two ends of the connector 6 are connected to the outer cylinder 1 and the inner cylinder by welding or mechanical connection to strengthen the connection between the inner cylinder and the outer cylinder, and its position and deviation meet the design requirements. The vertical installation distance of the connector 6 is not less than 300 mm.
[0027] Further, the transverse beam longitudinal steel bars 9 and the longitudinal beam longitudinal steel bars 10 adopt large-diameter steel bars, where a clear distance of the steel bars is not less than 30 mm and the larger value of the steel bar diameter; and a length of the steel bars in the beam body is a sum of an outer section size LI of the outer cylinder 1 and the inner cylinder, a length L2 of the anchor head 13, and a construction allowable deviation L3, and the length of the steel bar in the beam body is not less than 15d, where d is the diameter of the steel bar.
[0028] Further, the column corner longitudinal steel bars I 11 and the column corner longitudinal steel bars II 12 are arranged in four column steel bar central connection areas formed around the node core area by the inner cylinder, the outer cylinder, and the connectors. The column corner longitudinal steel bars I 11 and the column corner longitudinal steel bars IT 12 adopt large-diameter steel bars, the length of the column corner longitudinal steel bars I 11 and column corner longitudinal steel bars IT 12 meets a sum of a node core area section height H1 and an anchoring connection length H2, and the number of the steel bars in the square annular cavity corner region is not less than 50% of the reinforcement of the section and not less than 4 steel bars.
-10-
[0029] The key process of the application of the prefabricated concrete structure beam- column dry-wet combined connection construction is: according to the position of the column, installing the inner and outer cylinders, installing the longitudinal and transverse beams (the beam longitudinal steel bars are inserted into the U-shaped grooves in turn), and installing the inner horizontal gusset plate and the inner longitudinal gusset plate.
[0030] The specific use and operation process are: construction preparation (materials, anchor heads, parts, products, machinery, etc.) — column installation — cylindrical cavity structure installation — installation location, elevation, section information inspection — beam support structure installation — transverse beam installation — transverse beam steel bar inserting in the cylindrical cavity structure — longitudinal beam installation — longitudinal beam steel bar inserting into the cylindrical cavity structure — beam installation quality inspection — install inner transverse gusset plate and inner longitudinal gusset plate — concealed acceptance — grouting,
[0031] Embodiment IT Taking the prefabricated concrete frame structure as an example, the beam adopts a prefabricated beam, the maximum size of the beam section is 300x* 1200, the column adopts a prefabricated column with a column section size of 700-1000 mm, the beam- column longitudinal force steel bar adopts HRB500 with a diameter of 22-28. The beam-column node adopts a prefabricated concrete structure beam-column dry-wet combined connection construction of the present invention.
[0032] An implementation method of the prefabricated concrete structure beam- column dry-wet combined connection construction, using any one of embodiment I. Step 1: splitting prefabricated components of a concrete frame structure; splitting the concrete frame structure into parts capable of being manufactured and constructed, in regions of transverse beams, longitudinal beams, an upper body, a lower body, and a core node according to the design drawings and using a BIM information model of REVIT or PLANBAR; Step 2: deepening designs of components with beam-column core nodes; anode core area, especially the beam-column node core area, according to the combination of structural columns and structural beams, dividing them into side column nodes, center column nodes, and corner column nodes, and then combining
-11- relevant information of columns, beams and nodes for further optimization and integration, merging and combining, improving accuracy, reducing cost; Step 3: processing and manufacturing of the cylindrical cavity structure; combining the optimized node and connection construction type, making a processing plan, controlling processing accuracy, reviewing quality of processed parts, and then performing assembly verification, controlling a deviation of internal and external dimension of the processing within 1-2 mm; content of inspection including size deviation, section position, U-shaped groove, concave-convex grille plate, corner region, connector position, material strength and thickness of inner and outer cylinders; the processed cylinder cavity structure being classified and stacked, and implanted chips and numbered for use; Step 4: construction of dry-wet combined connection node; the process includes: construction preparation (materials, anchor heads, parts, products, machinery, etc.) — column installation — cylindrical cavity structure installation — installation location, elevation, section information inspection — beam support structure installation — transverse beam installation — transverse beam steel bar inserting in the cylindrical cavity structure — longitudinal beam installation — longitudinal beam steel bar inserting into the cylindrical cavity structure — beam installation quality inspection — install inner transverse gusset plate and inner longitudinal gusset plate — concealed acceptance — grouting.
[0033] The beam-column node connection construction method provided in this embodiment 1s mainly dry installation supplemented by wet grouting. Its biggest advantages are node installation, steel bar in place, connection fixing, concrete construction, etc., satisfying modularization and integrated installation. Compared with the construction of wet nodes, the beam steel bars are directly installed in place, which saves steel bars, and solves the problems of anchor connection and conflict of steel bars in the node core area. The connection nodes do not need to support a formwork, and the concrete 1s poured directly, which eliminates the process links of supporting formworks and setting up supports etc in the wet construction and the construction problems. The beams and columns are directly molded, which improves the assembly rate. For the node core area, the inner cylinder and the outer cylinder are coordinated, eliminating the need for stirrups in the node core area, and the construction staggering
-12- problem for the dense configuration of stirrups.
The column steel bars are concentrated in the corner regions, which solves the problems of the large number of grouting in the prefabricated wet connection, the cumbersome construction and the difficulty of quality assurance.
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224548.XA CN111255066A (en) | 2020-03-26 | 2020-03-26 | Dry-wet combined connecting structure for beam column of prefabricated concrete structure and implementation method |
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| Publication Number | Publication Date |
|---|---|
| NL2027578A NL2027578A (en) | 2021-05-11 |
| NL2027578B1 true NL2027578B1 (en) | 2021-09-02 |
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| CN115126086B (en) * | 2022-08-13 | 2023-04-07 | 上海金鹿建设(集团)有限公司 | Assembled reinforced concrete beam column node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB119987A (en) * | 1918-03-08 | 1918-10-24 | Charles Henry Heathcote | Improvements in or relating to Reinforced Concrete Constructions. |
| CN110016966B (en) * | 2019-04-18 | 2022-06-03 | 合肥工业大学 | T-shaped assembled node of prefabricated part composite beam-prefabricated superposed composite column |
| CN110747994A (en) * | 2019-10-31 | 2020-02-04 | 福州大学 | Ductile node structure of reinforced concrete frame |
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