CN115928882A - Assembled composite structure hybrid connection node suitable for coastal region - Google Patents
Assembled composite structure hybrid connection node suitable for coastal region Download PDFInfo
- Publication number
- CN115928882A CN115928882A CN202211614587.6A CN202211614587A CN115928882A CN 115928882 A CN115928882 A CN 115928882A CN 202211614587 A CN202211614587 A CN 202211614587A CN 115928882 A CN115928882 A CN 115928882A
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- concrete
- plate
- stainless steel
- ecc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses an assembled composite structure hybrid connection node suitable for coastal areas, which comprises a spliced stainless steel pipe; pouring core concrete and ECC in the core area into the spliced stainless steel tube to form a stainless steel tube concrete column; an upper annular plate and a lower annular plate are arranged on the outer side of the spliced stainless steel pipe; a bracket side plate is arranged between the upper ring plate and the lower ring plate; the upper ring plate and the lower ring plate are used for fixing the prefabricated mixed beam; the prefabricated mixed beam comprises a GFRP rib cage; longitudinal steel bars are fixed on the upper side and the lower side of the GFRP reinforcement cage; a bottom ECC layer, a mixed beam prefabricated area and a mixed beam post-pouring area are sequentially poured on the GFRP reinforcement cage; the longitudinal steel bar is fixedly connected with the connecting plate; the connecting plate is connected with the upper annular plate and the lower annular plate through high-strength bolts respectively; the upper ring plate and the upper part of the prefabricated mixed beam are provided with prefabricated reinforced truss concrete composite floor slabs; can be applied to the fabricated building in coastal areas.
Description
Technical Field
The invention belongs to the technical field of structural engineering, and particularly relates to an assembled composite structure hybrid connecting node suitable for coastal areas.
Background
In recent years, with the guidance opinions on the vigorous development of the fabricated building, the guidance opinions on the promotion of the collaborative development of the building only under the industrialization, and the suggestions on the acceleration of the industrialization of the new building, the vigorous development of the fabricated building is pointed out. Since the development of the fourteen-five game, the policy of supporting the assembly type buildings in provinces and cities falls on the ground, so that the assembly type buildings in China step into the rapid development stage.
At present, the prefabricated building in China mainly adopts a prefabricated steel structure and a prefabricated concrete structure, however, the two prefabricated structures have respective problems, and the development of modern prefabricated buildings is restricted to a great extent. The fabricated concrete structure still can not avoid the problems of heavy weight, uncontrollable cracking, poor impermeability, complex connection and installation modes, poor integrity and seismic performance and the like, and can not inhibit the invasion of corrosive substances such as chloride ions and the like, so that the fabricated concrete structure is very easy to cause corrosion of internal reinforcing steel bars and degradation of the bearing capacity and rigidity of components, and therefore, the fabricated concrete structure is difficult to be applied to coastal areas of China; the fabricated steel structure has high cost and poor fire resistance and corrosion resistance, is difficult to popularize and apply in civil buildings in large area, and is also not suitable for fabricated buildings in coastal areas.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the fabricated composite structure hybrid connection node suitable for the coastal areas, which can obviously improve the construction efficiency, the deformation capability, the energy consumption capability and the durability of fabricated buildings and can be applied to the fabricated buildings in the coastal areas. The invention can effectively solve the problems of 'thick beam and fat column', overlarge residual deformation, low construction efficiency, poor overall performance, seismic performance and durability and the like caused by insufficient material strength of the traditional cast-in-place or completely assembled steel pipe concrete-concrete beam node.
In order to achieve the purpose, the invention provides the following technical scheme:
an assembled composite structure hybrid connection node suitable for coastal areas comprises a spliced stainless steel pipe;
pouring core concrete and ECC in the core area into the spliced stainless steel tube to form a stainless steel tube concrete column;
an upper annular plate and a lower annular plate are arranged on the outer side of the spliced stainless steel pipe; a bracket side plate is arranged between the upper ring plate and the lower ring plate; the upper ring plate and the lower ring plate are used for fixing the prefabricated mixed beam;
the prefabricated hybrid beam comprises a GFRP rib cage; longitudinal steel bars are fixed on the upper side and the lower side of the GFRP reinforcement cage; a bottom ECC layer, a mixed beam prefabricated area and a mixed beam post-pouring area are sequentially poured on the GFRP reinforcement cage; the longitudinal steel bar is fixedly connected with the connecting plate;
the connecting plate is connected with the upper annular plate and the lower annular plate through high-strength bolts respectively;
the upper ring plate and the upper part of the prefabricated hybrid beam are provided with a prefabricated reinforced truss concrete composite floor slab;
the prefabricated reinforced truss concrete composite floor slab comprises a floor slab reinforcing mesh, a reinforced truss and a prefabricated ECC of the floor slab; the floor slab reinforcing mesh extends to be fixedly connected with the upper surface of the upper annular plate, and a reinforcing steel bar truss is fixed on the floor slab reinforcing mesh; and pouring the ECC for prefabricating the floor slab on the floor slab reinforcing mesh and the steel bar truss.
Preferably, the spliced stainless steel pipe is formed by welding and assembling a plurality of prefabricated groove type stainless steel pipes.
Preferably, the concrete interface between the core concrete and the core area ECC is provided with GFRP ribs.
Preferably, the longitudinal steel bar is welded with the connecting plate.
Preferably, the upper ring plate, the lower ring plate and the stainless steel corbel plate are welded to the surface of the spliced stainless steel tube.
Preferably, the surface of the spliced stainless steel pipe is provided with a steel pipe reserved hole.
Preferably, the strength grade of the core concrete is not lower than C60.
Preferably, the core zone ECC strength rating is not less than the core concrete strength rating.
Preferably, the floor slab reinforcing mesh is welded and fixed with the upper annular plate.
Preferably, the GFRP reinforcement cage and the longitudinal reinforcement are cast with a bottom ECC layer in the template, the surface of the bottom ECC layer is grooved after initial setting, and concrete in a precast area of the hybrid beam is cast; and after the prefabricated reinforced truss concrete composite floor slab is installed, pouring ECC in a post-pouring area of the hybrid beam.
Compared with the prior art, the invention has the following beneficial technical effects:
the fabricated composite structure hybrid connection node suitable for coastal areas adopts partial fabricated installation, can effectively improve the mechanical construction efficiency, can improve the overall performance of beams, columns and floors by adopting a high-strength bolt and ECC cast-in-place connection mode, avoids the corrosion of reinforcing steel bars by adopting GFRP (glass fiber reinforced plastic) bars and ECC (error correction code) and is favorable for improving the deformation capacity and energy consumption capacity of the node by pouring the ECC at the key part. The node form provided by the invention can be suitable for fabricated buildings in coastal areas.
The stainless steel adopted by the spliced thin-wall square stainless steel tube concrete column can solve the problem that the surface of common steel is corroded by corrosive ions, and the section form of the spliced steel tube can improve the constraint effect on core concrete, so that the bearing capacity of the material can be fully exerted, and the problems of high use and construction cost of building materials and the like can be reduced. The ECC in the core area of the node can improve the deformability and energy consumption of the node, and is favorable for improving the brittle failure problem of core concrete. The application of the short (glass fiber reinforced polymer) GFRP rib ensures that the whole core concrete has good stress transmission capability and avoids premature cracking and damage of the junction of materials. The application of stainless steel cow leg board and bottom crown plate can make this kind of node realize quick hoist and mount, is favorable to promoting machinery's availability factor, and high strength bolt can pass connecting plate and crown plate hole high-speed joint. The application of the upper and bottom ring plates can effectively improve the rigidity of the core area of the node, limit the local deformation of the column and facilitate the realization of the design target of strong node and weak member. ECC is poured at the upper end and the lower end of the beam, so that corrosion of corrosive ions to longitudinal steel bars is protected, the development of cracks on the surface of concrete is controlled, and the bending resistance of the hybrid beam and the overall performance of the installed floor slab are improved.
The fabricated composite structure hybrid connection node suitable for coastal areas provided by the invention meets the assembly rate requirement of the current fabricated structure construction, and can effectively overcome the problems of large section design, low bearing capacity, low construction efficiency, long maintenance period, poor durability, poor seismic performance and the like of the traditional cast-in-place or fabricated concrete-filled steel tube column-concrete beam. By adopting the novel section form and the node construction scheme, the construction efficiency and the structural performance of the node part of the concrete filled steel tubular column-prefabricated mixed beam can be effectively improved, and the concrete filled steel tubular column-prefabricated mixed beam has better economic benefit and technical advantage when being applied to modern civil buildings, industrial buildings, special buildings and other multi-layer important buildings.
Drawings
FIG. 1 is a schematic view of a node configuration;
FIG. 2 is a schematic view of a spliced steel tubular concrete column;
FIG. 3 is a schematic front view of a spliced concrete filled steel tubular column;
FIG. 4 is a schematic side view of spliced concrete filled steel tube;
FIG. 5 is a schematic view of the installation of the precast reinforced truss concrete composite floor slab;
FIG. 6 is a schematic view of a prefabricated steel bar truss concrete composite floor slab structure;
FIG. 7 is a schematic view of a ring plate configuration;
fig. 8 is a schematic view of a precast concrete beam construction.
In the drawings: 1 is a splicing type stainless steel pipe; 2 is core concrete; 3 is GFRP rib; 4 is core area ECC;5 is a concrete interface; 6 is a mixed beam prefabrication area; 7 is a longitudinal steel bar; 8 is a post-pouring area of the mixed beam; 9 is a bottom ECC layer; 10 is a connecting plate; 11, a prefabricated mixed beam; 12 is a high-strength bolt; 13 is a stainless steel bracket plate; 14 is an upper ring plate; 15 is a lower ring plate; reserving holes for the steel pipes 16; 17, prefabricating a reinforced truss concrete composite floor slab; 18 is a floor reinforcing mesh; 19 is a steel bar truss; 20 is prefabricated groove type stainless steel; 21 is GFRP rib cage; 22 is floor pre-fabricated ECC.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The assembled composite structure hybrid connection node suitable for coastal areas can meet the overall performance and the seismic performance between beams and columns under the condition of quickly hoisting beam and column members, and can effectively resist corrosion of erosion ions to internal reinforcing steel bars.
The invention relates to an assembled composite structure hybrid connection node suitable for coastal areas.
As shown in figure 1, the spliced thin-wall square stainless steel tube concrete column comprises a spliced stainless steel tube 1, core concrete 2, a core area ECC4 and a GFRP rib 4. The core concrete 2 and the core area ECC4 are poured into the spliced stainless steel tube 1 to form a stainless steel tube concrete column.
An upper annular plate 14 and a lower annular plate 15 are arranged on the outer side of the spliced stainless steel pipe 1; a bracket side plate 13 is arranged between the upper ring plate 14 and the lower ring plate 15; the upper ring plate 14 and the lower ring plate 15 are used for fixing the prefabricated hybrid beam.
The prefabricated hybrid beam comprises a GFRP reinforcement cage 21; longitudinal steel bars 7 are fixed on the upper side and the lower side of the GFRP reinforcement cage 21; a bottom ECC layer 9, a mixed beam prefabrication area 6 and a mixed beam post-pouring area 8 are sequentially poured on the GFRP reinforcement cage 21; the longitudinal steel bar 7 is fixedly connected with the connecting plate 10; the connecting plate 10 is connected with an upper ring plate 14 and a lower ring plate 15 through high-strength bolts 12 respectively; the upper ring plate 14 and the upper part of the prefabricated mixed beam are provided with a prefabricated reinforced truss concrete composite floor slab 17.
The prefabricated reinforced truss concrete composite floor slab 17 comprises a floor slab reinforcing mesh 18, a reinforced truss 19 and a floor slab prefabricated ECC22; the floor reinforcing mesh 18 extends to be fixedly connected with the upper surface of the upper annular plate 14, and a steel bar truss 19 is fixed on the floor reinforcing mesh 18; the floor slab pre-fabricated ECC22 is cast over the floor slab rebar grid 18 and the rebar truss 19.
The prefabricated mixed beam is prefabricated and formed in batches by a factory and comprises a GFRP reinforcement cage 21, a mixed beam prefabricated area 6, longitudinal reinforcements 7, a mixed beam post-pouring area 8, a bottom ECC layer 9 and a connecting plate 10, and the connection work of a node part can be completed by on-site lap joint and installation of a high-strength bolt 12. And common concrete is poured in the mixed beam prefabricating area 6, and ECC is poured in the mixed beam post-pouring area 8. ECC has good impervious and the ability of restraining the invasion of corrosive ion, arranges a layer of bottom ECC layer 9 that is higher than the bottom and indulges the muscle at the bottom of prefabricated hybrid beam, can restrain corrosive ion invasion reinforcing bar surface, avoids the reinforcing bar to take place the corrosion.
As shown in fig. 2, the spliced stainless steel tube 1 of the spliced thin-wall square stainless steel tube concrete column is formed by welding and assembling a plurality of prefabricated groove type stainless steels 20 by applying a combined section form of a stainless steel material and a spliced type, and can remarkably enhance the constraint effect, the buckling resistance and the corrosion resistance of the node stainless steel tube. Two kinds of concrete are poured into the interior, are core concrete 2 and core area ECC4 respectively to improve the deformation and the power consumption ability of node core area, avoid node core area brittle failure under the earthquake action. The ECC is poured inside the steel pipe, and the steel pipe is respectively composed of core concrete 2 at the lower part, core area ECC4 and core concrete at the upper part. The concrete interface 5 between the core concrete 2 and the core ECC4 is provided with GFRP-ribs 3.
The strength grade of the core concrete 2 is not lower than C60 and the strength grade of the core area ECC4 is not lower than the strength grade of the core concrete 2. In order to enhance the common stress of ECC and common concrete inside the spliced thin-wall square stainless steel tube concrete column, a short (glass fiber reinforced polymer) GFRP (glass fiber reinforced Polymer) rib 3 is adopted to connect the concrete interface 5 of the column and the common concrete, so that the core concrete has good stress transfer capability on the whole, and premature cracking and damage at the junction of materials are avoided.
The prefabricated area 6, the GFRP reinforcement cage 21, the longitudinal reinforcements 7 and the bottom ECC layer 9 of the prefabricated hybrid beam are completely prefabricated in a factory, the longitudinal reinforcements 7 on the upper side and the lower side of the end of the beam are welded with the connecting plate 10, and the stress of the longitudinal reinforcements 7 can be transmitted to the connecting plate 10, so that the stress can be transmitted to the upper annular plate 14 and the lower annular plate 15 and then transmitted to the spliced thin-wall square stainless steel tube concrete column through the annular plates.
As shown in fig. 3, the steel part of the spliced thin-wall square stainless steel tube concrete column is completely prefabricated in a factory, and the upper ring plate 14, the lower ring plate 15 and the stainless steel bracket plate 13 are welded on the surface of the spliced stainless steel tube 1, so that the rigidity and the bearing capacity of the node core area can be improved, and the expectation of quick hoisting can be realized. As shown in figure 4, the steel tube reserved holes 16 are formed in the surface of the spliced stainless steel tube 1, so that the ECC4 in the core area and the ECC in the post-cast area 8 of the hybrid beam are condensed into a whole, and the overall performance of the prefabricated hybrid beam and the spliced thin-wall square stainless steel tube concrete column is improved. The core concrete 2, the core area ECC4 and the short GFRP ribs 3 in the spliced thin-wall square stainless steel tube concrete column need to be poured and installed on site.
As shown in fig. 7, the sectional form of the upper ring plate 14 and the lower ring plate 15 can be sufficiently welded to the spliced thin-walled square stainless steel tubular concrete column, thereby enhancing the local rigidity of the column, limiting the lateral deformation thereof and facilitating the connection of the connecting plate 10 from which the precast concrete beam extends.
As shown in fig. 5, 6 and 8, the components of the prefabricated steel bar truss concrete composite floor slab 17 mainly include a floor slab reinforcing mesh 18, a steel bar truss 19 and a floor slab prefabricated ECC22. And hoisting the prefabricated reinforced truss concrete composite floor slab 17 to the upper end of the post-cast area 8 of the hybrid beam, extending the floor slab reinforcing mesh to the upper surface of the upper annular plate 14, welding and fixing, and then pouring ECC (error correction code) on the post-cast area 8 of the hybrid beam and the upper surface of the prefabricated reinforced truss concrete composite floor slab 17 to finish the assembly work of the floor slab.
The stainless steel corbel side plate 13 can improve the overall performance and rigidity of the joint part, and can be used as a part of template of the post-cast zone 8 of the mixed beam, so that the workload of site construction is reduced.
The assembled composite structure hybrid connection node suitable for coastal areas adopts the spliced thin-wall square stainless steel tube concrete column, and the section form and the application of the material can obviously enhance the constraint effect, the buckling resistance and the corrosion resistance of the stainless steel tube of the node.
According to the fabricated composite structure mixed connection node suitable for coastal areas, the fiber reinforced cement-based composite material (ECC) is poured into the core area of the spliced thin-wall square stainless steel tube concrete column, and common concrete is poured into other parts, so that the adopted use cost is reduced.
According to the fabricated composite structure hybrid connection node suitable for coastal areas, in order to enhance the common stress of ECC and common concrete inside the spliced thin-wall square stainless steel tube concrete column, short (glass fiber reinforced polymer) GFRP (glass fiber reinforced Polymer) ribs are adopted to connect the cross section parts of the ECC and the common concrete, so that the core concrete has good stress transfer capability, and the premature cracking and damage of the junction of materials are avoided.
The fabricated composite structure hybrid connection node suitable for coastal areas has good anti-permeability and corrosion ion invasion inhibiting capacity, and the ECC layer higher than the bottom longitudinal bar is arranged at the bottom of the prefabricated hybrid beam, so that corrosion ions can be inhibited from invading the surface of the steel bar, and the steel bar is prevented from being corroded. In addition, the ECC has good tensile capacity, strain hardening capacity, crack resistance and bonding capacity, so that the ECC can work together with the hybrid beam, crack development on the surface of the hybrid beam is inhibited, and deformation and energy consumption capacity of a component are improved.
According to the fabricated composite structure hybrid connection node suitable for coastal areas, the common concrete is poured in the prefabricated area of the prefabricated hybrid beam, and the ECC is poured in the post-pouring area of the hybrid beam, so that the cost is saved, better deformability is provided for the key part of the node, the local crack expansion of the hybrid beam under the earthquake action of the beam is reduced, and meanwhile, the force transfer and connection performance between the prefabricated reinforced truss concrete composite floor slab and the beam are improved.
The invention relates to an assembled composite structure hybrid connection node suitable for coastal areas.A framework of a prefabricated hybrid beam is mainly built by GFRP (glass fiber reinforced plastic) ribs to form a GFRP rib cage. Only one row of longitudinal ribs on the upper part and the lower part of the beam are made of HRB400 steel bars, so that the welding of the steel bars and the bottom connecting plate is facilitated, and the load of the hybrid beam can be transmitted to the connecting plate. The GFRP bar has good corrosion resistance, and the GFRP bar and the concrete have good bonding capacity, so that the GFRP bar and the concrete can work together under the condition of not being influenced by erosion ions.
The application of the assembled composite structure hybrid connection node, the stainless steel shank plate and the bottom ring plate suitable for the coastal region can realize quick hoisting of the node, is beneficial to improving the use efficiency of machinery, and the high-strength bolt can pass through the connection plate and the hole of the ring plate for quick connection. The application of the upper and bottom ring plates can effectively improve the rigidity of the core area of the node, limit the local deformation of the column and facilitate the realization of the design target of strong node and weak member.
According to the fabricated composite structure hybrid connection node suitable for the coastal areas, the steel bar trusses in the prefabricated steel bar truss concrete composite floor slab are convenient to construct and hoist, and the concrete of the floor slab is completely poured by ECC (error correction code) so as to improve the durability of the floor slab in the coastal areas.
According to the fabricated composite structure mixed connection node suitable for coastal areas, the square hole is reserved in the core area of the spliced thin-wall square stainless steel tube concrete column, so that an ECC in the tube and an ECC in a post-cast area of a prefabricated mixed beam are conveniently condensed into a whole, and the overall performance of the prefabricated mixed beam and the spliced thin-wall square stainless steel tube concrete column is improved.
The invention provides an assembly type combined structure hybrid connecting node suitable for coastal areas, which can overcome the problems of poor durability, integrity and seismic performance and the like of traditional materials, and the installation process of the node form of the invention mainly comprises the following steps: the method comprises the steps of prefabricating parts in a factory, erecting and splicing the stainless steel pipes on site, hoisting and prefabricating the hybrid beam and the floor slab, and integrally installing on site.
(1) Factory prefabricated test piece
The steel part of the spliced thin-wall square stainless steel tube concrete column is completely prefabricated in a factory, an upper ring plate 14, a lower ring plate 15 and a stainless steel bracket plate 13 are welded on the surface of the spliced stainless steel tube 1, and then steel tube reserved holes 16 are formed in the surface of the spliced stainless steel tube 1.
The installation process of the prefabricated mixed beam firstly needs to build a GFRP reinforcement cage 21 and longitudinal reinforcements 7, the framework is placed in a template, a bottom ECC layer 9 is poured, grooves are carved on the surface after ECC is initially set, and then concrete in the prefabricated area 6 of the mixed beam is poured. And finally, welding the longitudinal steel bars 7 and the connecting plate 10 on the upper side and the lower side of the end of the beam to ensure that the stress of the longitudinal steel bars 7 can be transmitted to the connecting plate 10.
(2) On-site erection splicing type stainless steel pipe
And hoisting the steel pipe concrete column manufactured in a factory to a foundation on site, and fixing the bottom of the spliced thin-wall square stainless steel pipe concrete column by adopting high-strength bolts.
(3) Hoisting prefabricated mixed beam and floor slab
And (3) conveying the prefabricated mixed beam member to a construction site from a factory for hoisting, hoisting the prefabricated mixed beam to the upper surface of the lower annular plate 15, and connecting the connecting plate 10 of the prefabricated mixed beam with the upper annular plate 14 and the lower annular plate 15 by screwing the high-strength bolt 12. And then, hoisting the prefabricated reinforced truss concrete composite floor slab 17 to the upper surface of the prefabricated hybrid beam, and connecting and fixing the floor slab reinforcing mesh 18 and the upper annular plate 14 by welding.
(4) On-site integral installation
Firstly, a template of a mixed beam post-pouring area 8 is built, core concrete 2 in a spliced stainless steel pipe 1 is poured, short GFRP (glass fiber reinforced plastic) ribs 3 are arranged on a concrete interface 5, a core area ECC4, the mixed beam post-pouring area 8 and an ECC of a prefabricated reinforced truss concrete composite floor slab 17 are poured simultaneously after the core area ECC4 is initially set, the core area ECC4 gradually enters the mixed beam post-pouring area 8 through a steel pipe reserved hole 16, the two parts can be bonded into a whole, and similarly, the prefabricated reinforced truss concrete composite floor slab 17 and the mixed beam post-pouring area 8 are also integrated. And then, arranging short GFRP (glass fiber reinforced plastic) ribs 3 on the upper concrete interface 5, pouring the residual core concrete 2 after the ECC is initially set, and finishing the construction and installation work of the novel fabricated node.
Claims (10)
1. An assembly type composite structure hybrid connection node suitable for coastal areas is characterized by comprising a splicing type stainless steel pipe (1);
the core concrete (2) and the core area ECC (4) are poured into the spliced stainless steel pipe (1) to form a stainless steel pipe concrete column;
an upper annular plate (14) and a lower annular plate (15) are arranged on the outer side of the spliced stainless steel pipe (1); a bracket side plate (13) is arranged between the upper annular plate (14) and the lower annular plate (15); the upper ring plate (14) and the lower ring plate (15) are used for fixing the prefabricated mixed beam;
the prefabricated hybrid beam comprises a GFRP rib cage (21); longitudinal steel bars (7) are fixed on the upper side and the lower side of the GFRP reinforcement cage (21); a bottom ECC layer (9), a mixed beam prefabrication area (6) and a mixed beam post-pouring area (8) are sequentially poured on the GFRP reinforcement cage (21); the longitudinal steel bar (7) is fixedly connected with the connecting plate (10);
the connecting plate (10) is connected with the upper annular plate (14) and the lower annular plate (15) through high-strength bolts (12) respectively;
the upper ring plate (14) and the upper part of the prefabricated mixed beam are provided with a prefabricated reinforced truss concrete composite floor slab (17);
the prefabricated reinforced truss concrete composite floor slab (17) comprises a floor slab reinforcing mesh (18), a reinforced truss (19) and a floor slab prefabricated ECC (22); the floor reinforcing mesh (18) extends to be fixedly connected with the upper surface of the upper annular plate (14), and a reinforcing steel bar truss (19) is fixed on the floor reinforcing mesh (18); and pouring the ECC (22) prefabricated by the floor slab on the floor slab reinforcing mesh (18) and the steel bar truss (19).
2. The hybrid connection node of assembled composite structure suitable for coastal areas according to claim 1, wherein the spliced stainless steel pipe (1) is assembled by welding a plurality of prefabricated channel type stainless steels (20).
3. Prefabricated composite structural hybrid connecting node for coastal areas according to claim 1 characterized in that the concrete interface (5) between the core concrete (2) and the core ECC (4) is provided with GFRP-ribs (3).
4. Fabricated composite structural hybrid connecting node suitable for coastal areas according to claim 1, characterized in that said longitudinal reinforcement (7) is welded with the connecting plate (10).
5. The fabricated composite structural hybrid connecting node for coastal areas according to claim 1, characterized in that the upper ring plate (14), the lower ring plate (15) and the stainless steel corbel plate (13) are welded to the surface of the spliced stainless steel pipe (1).
6. The fabricated composite structure hybrid connecting node applicable to coastal areas according to claim 1, characterized in that the surface of the spliced stainless steel pipe (1) is provided with steel pipe preformed holes (16).
7. Fabricated composite structural hybrid connecting node suitable for coastal areas according to claim 1, characterized in that said core concrete (2) has a strength rating not lower than C60.
8. Fabricated composite structural hybrid connecting node suitable for coastal areas according to claim 1, characterized in that the strength grade of the core zone ECC (4) is not lower than that of the core concrete (2).
9. The prefabricated composite structural hybrid connecting node for coastal areas of claim 1, wherein said floor reinforcing mesh (18) is welded and fixed to the upper ring plate (14).
10. The prefabricated composite structure hybrid connecting node suitable for coastal areas according to claim 1, wherein the GFRP reinforcement cage (21) and the longitudinal steel bars (7) are cast with a bottom ECC layer (9) in a template, the bottom ECC layer (9) is grooved on the surface after initial setting, and concrete in the precast mixed beam area (6) is cast; and after the prefabricated reinforced truss concrete composite floor slab (17) is installed, pouring ECC in the post-pouring area (8) of the hybrid beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614587.6A CN115928882A (en) | 2022-12-13 | 2022-12-13 | Assembled composite structure hybrid connection node suitable for coastal region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614587.6A CN115928882A (en) | 2022-12-13 | 2022-12-13 | Assembled composite structure hybrid connection node suitable for coastal region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115928882A true CN115928882A (en) | 2023-04-07 |
Family
ID=86555323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211614587.6A Pending CN115928882A (en) | 2022-12-13 | 2022-12-13 | Assembled composite structure hybrid connection node suitable for coastal region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115928882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117328687A (en) * | 2023-11-30 | 2024-01-02 | 北京建工集团有限责任公司 | Method for installing steel structure-concrete combined structure |
-
2022
- 2022-12-13 CN CN202211614587.6A patent/CN115928882A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117328687A (en) * | 2023-11-30 | 2024-01-02 | 北京建工集团有限责任公司 | Method for installing steel structure-concrete combined structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108301561B (en) | Connection structure of assembled steel pipe concrete column shaft | |
| CN107060140B (en) | Prefabricated double-steel-tube concrete shear wall and assembling method thereof | |
| CN106836479B (en) | Assembled prestressed concrete frame structure | |
| CN110792165B (en) | Prefabricated assembly type concrete beam column joint connecting device and method | |
| CN108755964B (en) | Partially prefabricated assembly type steel concrete mixing column and construction method | |
| CN108179806B (en) | Fully assembled reinforced concrete frame structure system | |
| CN108775084B (en) | Steel-concrete combined precast beam and precast column connecting structure and construction method | |
| CN210086489U (en) | Dry-type connected low-rise assembly type building structure system | |
| CN114922286A (en) | Assembly type replaceable energy consumption hybrid connection node and installation method | |
| CN115928882A (en) | Assembled composite structure hybrid connection node suitable for coastal region | |
| CN108678164B (en) | Connecting beam type assembled building structure | |
| CN215484069U (en) | Steel pipe concrete truss prestressing force superposed beam | |
| CN115434425A (en) | Lattice type steel reinforced concrete prefabricated beam column joint and method | |
| CN114482267A (en) | Assembled hollow corrugated sandwich concrete filled steel tube combined frame structure system | |
| CN108755939B (en) | Composite connection assembling type building structure | |
| CN111255074A (en) | Prefabricated column-steel beam hybrid frame structure and construction method thereof | |
| CN220247223U (en) | Connecting node of prefabricated steel tube type steel reinforced concrete column and reinforced concrete beam | |
| CN220848067U (en) | Connecting node of prefabricated steel tube type steel concrete column and steel tube type concrete beam | |
| CN215888962U (en) | Thin-bottom groove type prestressed concrete superposed beam | |
| CN114635502B (en) | Prefabricated split beam with overlapped nodes and construction method thereof | |
| CN210508042U (en) | Prefabricated cylinder structure of assembled combination | |
| CN114809072B (en) | Underground space prestress steel reinforced concrete top cover under oversized span heavy load | |
| CN220814406U (en) | Prefabricated assembled formwork shear wall | |
| CN216787650U (en) | Square pipe UHPC composite hollow column and hollow column-shaped steel beam combined frame | |
| CN219261339U (en) | Lattice type steel reinforced concrete precast beam column node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |