CN112609840A - Connecting joint suitable for assembled reinforced concrete member and construction method - Google Patents
Connecting joint suitable for assembled reinforced concrete member and construction method Download PDFInfo
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- CN112609840A CN112609840A CN202011505681.9A CN202011505681A CN112609840A CN 112609840 A CN112609840 A CN 112609840A CN 202011505681 A CN202011505681 A CN 202011505681A CN 112609840 A CN112609840 A CN 112609840A
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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
- E04B1/38—Connections for building structures in general
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Structural Engineering (AREA)
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a concrete member connecting node and a node construction method, and aims to solve the problems that in the prior art, a plurality of nodes of an assembled building have more and denser steel bars, the steel bar binding efficiency is low, the steel bar spacing cannot be ensured, and the stress performance is reduced. The cast-in-place concrete strength improvement needs time, influences the construction quality and the efficiency of the fabricated concrete structure, and comprises cast concrete, two reinforced concrete members, two prefabricated steel nodes and a plurality of high-strength bolts, wherein each prefabricated steel node comprises an upper end plate, a lower end plate, two webs and a plurality of stiffening ribs, and the method is realized according to the following steps: the method comprises the following steps: firstly, manufacturing prefabricated steel nodes in a factory; step two: the reinforced concrete member is fixed with the upper end plate of the prefabricated steel node; step three: connecting the two lower end plates; step four: and pouring, and finishing the node processing after the concrete is hardened. The invention is used in the field of building construction.
Description
Technical Field
The invention relates to a concrete member connecting node and a node construction method, in particular to a connecting node suitable for an assembled reinforced concrete member and a construction method.
Background
The assembly type building is a necessary way for building industrialization development, the assembly type building is vigorously developed and popularized in China at present, the assembly type building is not a simple process change, but a change of a building system and an operation mode is realized, and the promotion effect on building quality improvement is achieved. At present, prefabricated reinforced concrete structures are widely applied to engineering, prefabricated reinforced concrete components are produced on a factory formwork table and in a delicate mold, quality control of parts and components is easier than that of on-site construction, and the high precision of the prefabricated components drives the precision of on-site post-cast concrete parts to be improved. Meanwhile, the quality of concrete pouring, vibrating and maintaining links can be improved by the fabricated concrete building, so that the fabricated reinforced concrete member is widely applied to engineering.
The design scheme of the assembly type building process generally adopts a mode of vertical prefabrication, horizontal superposition and node cast-in-place. However, in practical application, the quality of cast-in-place nodes is often difficult to ensure, common quality common defects of the fabricated building mainly appear on the nodes, some quality problems are exposed in practical engineering, and a great number of fabricated concrete building quality problems have no better solution. At present, the connecting nodes of vertical components (prefabricated frame columns and shear walls) usually adopt a steel bar sleeve grouting connecting technology, steel bars on a plurality of nodes of an assembled building are more and denser, the steel bar binding efficiency is low, the phenomenon that a large number of steel bars are repeatedly bent (small-diameter steel bars are cold-bent and large-diameter steel bars are hot-bent) is caused on the construction site, the steel bar interval cannot be guaranteed, and the stress performance is reduced. Meanwhile, the concrete pouring quality of the node area cannot be detected on site, so that the connection quality of the node cannot be detected. In addition, the node position needs cast-in-place concrete, and the cast-in-place concrete intensity promotion needs certain time, consequently need wait that the concrete intensity of node position rises to the construction and the installation of certain amplitude after can carry out follow-up component, influences the construction quality of prefabricated concrete structure, can not effectively realize the fast advantage of prefabricated structure construction speed.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a plurality of nodes of an assembly type building are provided with more and denser steel bars, the steel bar binding efficiency is low, the steel bar spacing cannot be ensured, and the stress performance is reduced. The strength of cast-in-place concrete needs time to be improved, the construction quality and efficiency of the prefabricated concrete structure are influenced, and a connecting node suitable for the prefabricated reinforced concrete member is needed.
The technical scheme adopted by the invention for solving the problems is as follows:
it is including concreting, two reinforced concrete members, two prefabricated steel nodes and a plurality of high strength bolt, prefabricated steel node includes the upper end plate, lower end plate, two webs and a plurality of stiffening rib, upper end plate and lower end plate pass through two web fixed connection, every stiffening rib is installed on upper end plate, lower end plate and web, two lower end plates pass through a plurality of high strength bolt fixed connection, be equipped with concreting on two prefabricated steel nodes, install a reinforced concrete member on every upper end plate.
The method is realized according to the following steps:
the method comprises the following steps: firstly, prefabricated steel joints are manufactured in a factory, processed upper end plates, processed lower end plates and processed web plates are fixedly connected in a welding mode, reinforcing steel bar installation through holes are formed in the positions, corresponding to connecting positions of reinforcing steel bars, of the upper end plates, the positions of the reinforcing steel bar installation through holes correspond to the positions of the reinforcing steel bars in reinforced concrete members, bolt installation holes are processed in the positions, corresponding to high-strength bolts, of the lower end plates, holes are formed in the web plates, and stiffening ribs are welded and installed on the two web plates;
step two: transporting the processed steel node to a concrete member prefabrication factory, penetrating and fixing a steel bar at the position of the upper end plate corresponding to the steel bar installation through hole, wherein one end of the steel bar is fixedly connected with the upper end plate, and the other end of the steel bar is arranged on a concrete piece;
step three: connecting the two lower end plates, namely conveying the prepared reinforced concrete member and the prefabricated steel node to a construction site, arranging the two upper end plates oppositely, and fixedly connecting the two upper end plates through a plurality of high-strength bolts;
step four: pouring: pouring concrete into the two prefabricated steel nodes connected in the step three, wherein the peripheral size of the poured concrete at the nodes is the same as that of the prefabricated reinforced concrete members, and finishing the processing of the nodes after the concrete is hardened.
The invention has the beneficial effects that:
1. this application steel construction node reasonable in design can guarantee that node joint strength is not less than prefabricated reinforced concrete member, adopts high strength bolt 3 to connect two prefabricated steel nodes 2, realizes that prefabricated component's rapid Assembly formula is connected, can continue to carry out superstructure component's installation and construction behind the bolted connection node to show the construction speed who improves assembled component, and can effectively guarantee the intensity and the construction quality of component node junction.
2. After this application nodal connection was accomplished, concrete 4 is pour in the filling of node to effectively realize node steel member fire prevention and anticorrosive purpose.
3. The utility model provides a prefabricated reinforced concrete member connected mode with steel construction node has effectively avoided reinforced concrete prefabricated component node district steel bar connection difficulty, has pour the difficult shortcoming of guaranteeing of quality, simultaneously owing to set up the steel node in the node junction, steel construction member joint strength can guarantee that the intensity of node is enough to support the continuation construction of upper portion prefabricated concrete member to show the construction speed who improves the structural system, have good economic benefits.
Drawings
Fig. 1 is a schematic view of the overall structure of the present application.
Fig. 2 is a front view of the prefabricated steel node 2 of the present application.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a top view of fig. 2.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1-4, and the embodiment of the invention relates to a connection node suitable for an assembled reinforced concrete member, which comprises cast concrete 4, two reinforced concrete members 1, two prefabricated steel nodes 2 and a plurality of high-strength bolts 3, wherein the prefabricated steel nodes 2 comprise upper end plates 2-1, the reinforced concrete structure comprises a lower end plate 2-2, two webs 2-3 and a plurality of stiffening ribs 2-6, wherein the upper end plate 2-1 and the lower end plate 2-2 are fixedly connected through the two webs 2-3, each stiffening rib 2-6 is installed on the upper end plate 2-1, the lower end plate 2-2 and the webs 2-3, the two lower end plates 2-2 are fixedly connected through a plurality of high-strength bolts 3, cast concrete 4 is arranged on two prefabricated steel nodes 2, and a reinforced concrete member 1 is installed on each upper end plate 2-1.
In the embodiment, each stiffening rib 2-6 is welded and fixed with the upper end plate 2-1, the lower end plate 2-2 and the web plate 2-3, and the stiffening ribs 2-6 arranged on the steel nodes in the embodiment can effectively ensure the rigidity and the strength of the nodes. The prefabricated steel node 2 is made of Q235 steel, Q345 steel or Q390 steel, the pouring concrete 4 is ordinary concrete, high-strength concrete, fine aggregate concrete or high-strength grouting material, and the reinforced concrete member 1 is a reinforced concrete column, a reinforced concrete shear wall or a reinforced concrete beam.
The second embodiment is as follows: the embodiment is described with reference to fig. 1-4, and the prefabricated steel node 2 further comprises a plurality of connecting pieces 2-5, two connecting pieces 2-5 are fixedly mounted on one side surface of each stiffening rib 2-6, two connecting pieces 2-5 are fixedly mounted on one side surface of each web plate 2-3, and a plurality of connecting pieces 2-5 are fixedly mounted on one side surface of the lower end plate 2-2. The rest is the same as the first embodiment.
In the embodiment, the connecting pieces 2-5 are studs, angle steels or channel steels, and the connecting pieces 2-5 are welded on the lower end plates 2-2, the web plates 2-3 and the stiffening ribs 2-6 of the steel nodes to ensure the effective connection of the steel nodes and the reinforced concrete members.
The third concrete implementation mode: the embodiment is described in conjunction with fig. 1-4, and the embodiment is suitable for a prefabricated reinforced concrete member connecting node, wherein an upper end plate 2-1 and a lower end plate 2-2 of a prefabricated steel node 2 are arranged in parallel, and two webs 2-3 are arranged on the upper end plate 2-1 and the lower end plate 2-2 in parallel. The rest is the same as the first embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and the reinforced concrete member 1 of the embodiment is suitable for an assembled reinforced concrete member connection node, wherein the reinforced concrete member 1 comprises a concrete piece 1-1 and a plurality of reinforcing steel bars 1-2, the plurality of reinforcing steel bars 1-2 are arranged on the concrete piece 1-1 in parallel, and the concrete piece 1-1 and the plurality of reinforcing steel bars 1-2 are arranged on an upper end plate 2-1. The rest is the same as the first embodiment.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1-4, and the embodiment is suitable for an assembled reinforced concrete member connection node, wherein a plurality of bolt mounting holes are formed in a lower end plate 2-2, two lower end plates 2-2 are oppositely arranged, the two lower end plates 2-2 are fixedly connected through a plurality of high-strength bolts 3, holes 2-4 are formed in a web plate 2-3, and the holes 2-4 are located between two stiffening ribs 2-6. The purpose of the holes 2-4 is to enhance the cooperative working properties of the concrete and steel members. The bolt mounting holes are circular holes, square holes or polygonal holes, and the others are the same as those in the fourth embodiment.
The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to 4, and the embodiment is suitable for an assembled reinforced concrete member connection node, a reinforcement installation through hole is processed on an upper end plate 2-1, and a reinforcement 1-2 of a reinforced concrete member 1 is installed on the reinforcement installation through hole of the upper end plate 2-1. The reinforcing steel bar installation through holes are circular holes, square holes or polygonal holes, and the rest are the same as those of the fourth embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1 to 4, and the construction method of the embodiment is suitable for the assembled reinforced concrete member connecting node, and the method is realized according to the following steps:
the method comprises the following steps: firstly, prefabricated steel joints are manufactured in a factory, a processed upper end plate 2-1, a processed lower end plate 2-2 and a processed web plate 2-3 are fixedly connected in a welding mode, a reinforcing steel bar mounting through hole is arranged at the position, corresponding to a reinforcing steel bar 1-2, of the upper end plate 2-1, the position of the reinforcing steel bar mounting through hole corresponds to the position of the reinforcing steel bar 1-2 in a reinforced concrete member, a bolt mounting hole is processed at the position, corresponding to a high-strength bolt 3, of the lower end plate 2-2, a hole 2-4 is formed in the web plate 2-3, and stiffening ribs 2-6 are welded and mounted on the two web plates 2-;
the web plates 2-3 are provided with holes 2-4, so that concrete at nodes can be poured conveniently, the rigidity of the steel member connecting nodes is improved, and the cooperative working performance of the concrete and the steel member is enhanced; meanwhile, shear connectors are arranged on the upper end plate 2-1, the lower end plate 2-2 and the web plate 2-3 at intervals, and the cooperative work of steel members and concrete at nodes is enhanced.
Step two: the reinforced concrete member 1 is fixed with an upper end plate 2-1 of a prefabricated steel node 2, the processed steel node is transported to a concrete member prefabrication factory, a steel bar 1-2 is arranged and fixed in a position of the upper end plate 2-1 corresponding to a steel bar mounting through hole in a penetrating way, one end of the steel bar 1-2 is fixedly connected with the upper end plate 2-1, and the other end of the steel bar 1-2 is arranged on a concrete member 1-1;
step three: and (2) connecting the two lower end plates 2-2, namely conveying the prepared reinforced concrete member 1 and the prefabricated steel node 2 to a construction site, arranging the two upper end plates 2-1 oppositely, and fixedly connecting the two upper end plates 2-1 through a plurality of high-strength bolts 3.
Step four: pouring: pouring concrete 4 into the two prefabricated steel nodes 2 after the connection in the step three is completed, wherein the peripheral dimension of the poured concrete 4 at the nodes is the same as the dimension of the prefabricated reinforced concrete member, and the node processing is completed after the concrete is hardened.
The two upper end plates 2-1 are connected through the high-strength bolts 3 on a construction site, and the tensile strength, the compressive strength and the elastic modulus of steel are far higher than those of a reinforced concrete member, so that the strength and the rigidity of joint connection can be effectively ensured by adopting the steel joint connection, and the joint strength is higher than that of the connected member; after the connection is finished, concrete can be poured at the steel node to seal the steel node, so that the purposes of improving the rigidity of the node, preventing the steel node from being rusted and improving the fire resistance of the steel node are achieved.
The specific implementation mode is eight: the present embodiment will be described with reference to fig. 1 to 4, which is a construction method applied to a fabricated reinforced concrete structural member connection node,
in the second step, one end of the steel bar 1-2 is fixedly connected with the upper end plate 2-1, the steel bar 1-2 is welded at the steel bar installation through hole of the upper end plate 2-1, or the steel bar 1-2 can be connected with a sleeve through the steel bar, and the sleeve is welded at the steel bar installation through hole of the upper end plate 2-1. And the internal force of the steel bar is effectively transmitted to the steel node, and the rest is the same as that of the seventh specific embodiment.
Claims (7)
1. The utility model provides a be applicable to assembled reinforced concrete member connected node which characterized in that: it comprises poured concrete (4), two reinforced concrete members (1), two prefabricated steel nodes (2) and a plurality of high-strength bolts (3), wherein the prefabricated steel nodes (2) comprise upper end plates (2-1), the reinforced concrete structure comprises a lower end plate (2-2), two webs (2-3) and a plurality of stiffening ribs (2-6), wherein the upper end plate (2-1) and the lower end plate (2-2) are fixedly connected through the two webs (2-3), each stiffening rib (2-6) is installed on the upper end plate (2-1), the lower end plate (2-2) and the webs (2-3), the two lower end plates (2-2) are fixedly connected through a plurality of high-strength bolts (3), cast concrete (4) is arranged on the two prefabricated steel nodes (2), and a reinforced concrete member (1) is installed on each upper end plate (2-1).
2. A connection node suitable for an assembled reinforced concrete member according to claim 1, wherein: the prefabricated steel node (2) further comprises a plurality of connecting pieces (2-5), two connecting pieces (2-5) are fixedly installed on one side face of each stiffening rib (2-6), two connecting pieces (2-5) are fixedly installed on one side face of each web plate (2-3), and a plurality of connecting pieces (2-5) are fixedly installed on one side face of the lower end plate (2-2).
3. A connection node suitable for an assembled reinforced concrete member according to claim 1, wherein: an upper end plate (2-1) and a lower end plate (2-2) of the prefabricated steel node (2) are arranged in parallel, and two webs (2-3) are arranged on the upper end plate (2-1) and the lower end plate (2-2) in parallel.
4. A connection node suitable for an assembled reinforced concrete member according to claim 1, wherein: the reinforced concrete member (1) comprises a concrete piece (1-1) and a plurality of reinforcing steel bars (1-2), the reinforcing steel bars (1-2) are arranged on the concrete piece (1-1) in parallel, and the concrete piece (1-1) and the reinforcing steel bars (1-2) are installed on the upper end plate (2-1).
5. A connection node suitable for an assembled reinforced concrete member according to claim 1, wherein: a plurality of bolt mounting holes are processed in the lower end plate (2-2), the two lower end plates (2-2) are arranged oppositely, the two lower end plates (2-2) are fixedly connected through a plurality of high-strength bolts (3), holes (2-4) are processed in the web plate (2-3), and the holes (2-4) are located between the two stiffening ribs (2-6).
6. A connection node suitable for assembled reinforced concrete members according to claim 1 or 4, characterized in that: the upper end plate (2-1) is provided with a steel bar mounting through hole, and the steel bar (1-2) of the reinforced concrete member (1) is mounted on the steel bar mounting through hole of the upper end plate (2-1).
7. The construction method for the connection node of the assembled reinforced concrete members as claimed in claims 1 to 6, wherein: the method is realized according to the following steps:
the method comprises the following steps: firstly, prefabricated steel joints are manufactured in a factory, the processed upper end plate (2-1), lower end plate (2-2) and web plates (2-3) are fixedly connected in a welding mode, reinforcing steel bar installation through holes are arranged on the upper end plate (2-1) at positions corresponding to the reinforcing steel bars (1-2), the positions of the reinforcing steel bar installation through holes correspond to the positions of the reinforcing steel bars (1-2) in a reinforced concrete member, bolt installation holes are processed on the lower end plate (2-2) at positions corresponding to high-strength bolts (3), holes (2-4) are formed in the web plates (2-3), and stiffening ribs (2-6) are welded and installed on the two web plates (2-3);
step two: the reinforced concrete member (1) is fixed with an upper end plate (2-1) of a prefabricated steel node (2), the processed steel node is transported to a concrete member prefabrication factory, a steel bar (1-2) is arranged and fixed on the upper end plate (2-1) corresponding to a steel bar mounting through hole in a penetrating manner, one end of the steel bar (1-2) is fixedly connected with the upper end plate (2-1), and the other end of the steel bar (1-2) is arranged on the concrete member (1-1);
step three: connecting two lower end plates (2-2), namely conveying the prepared reinforced concrete member (1) and the prefabricated steel node (2) to a construction site, oppositely arranging the two upper end plates (2-1), and fixedly connecting the two upper end plates (2-1) through a plurality of high-strength bolts (3);
step four: pouring: pouring concrete (4) into the two prefabricated steel nodes (2) which are connected in the step three, wherein the peripheral size of the poured concrete (4) at the nodes is the same as that of the prefabricated reinforced concrete members, and the nodes are machined after the concrete is hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011505681.9A CN112609840A (en) | 2020-12-18 | 2020-12-18 | Connecting joint suitable for assembled reinforced concrete member and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011505681.9A CN112609840A (en) | 2020-12-18 | 2020-12-18 | Connecting joint suitable for assembled reinforced concrete member and construction method |
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| CN112609840A true CN112609840A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011505681.9A Pending CN112609840A (en) | 2020-12-18 | 2020-12-18 | Connecting joint suitable for assembled reinforced concrete member and construction method |
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| JP2005299303A (en) * | 2004-04-15 | 2005-10-27 | Nippon Light Metal Co Ltd | Beam-column connection structure |
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| CN106320607A (en) * | 2016-08-10 | 2017-01-11 | 天津大学建筑设计研究院 | Manufacturing method of assembly type prefabricated superposed beam with steel structure connection joints |
| CN108797800A (en) * | 2018-06-19 | 2018-11-13 | 福建农林大学 | The prefabricated column connected node of assembly concrete-filled steel tube and its construction method |
| CN110029737A (en) * | 2019-05-07 | 2019-07-19 | 河南绿建建筑科技有限公司 | Reinforcing bar square crossing built-in type wall beam connecting node |
| CN110273544A (en) * | 2019-05-22 | 2019-09-24 | 浙江精工钢结构集团有限公司 | The production method that part cladding steel reinforced concrete shear walls vertically splice tempering node |
| CN111335464A (en) * | 2020-04-08 | 2020-06-26 | 浙江大学城市学院 | Fabricated concrete structure beam column connecting node and construction method thereof |
| CN210947142U (en) * | 2019-09-19 | 2020-07-07 | 山东建科信息技术有限公司 | Assembled concrete structure post roof beam connecting steel node |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1049630A1 (en) * | 1982-10-26 | 1983-10-23 | Центральный Научно-Исследовательский И Проектно-Экспериментальный Институт Промышленных Зданий И Сооружений Госстроя Ссср | Connection assembly of u-shaped cross-bars with column of ferroconcrete framework of a building |
| JP2005299303A (en) * | 2004-04-15 | 2005-10-27 | Nippon Light Metal Co Ltd | Beam-column connection structure |
| JP2009197560A (en) * | 2008-02-25 | 2009-09-03 | Taisei Corp | Connection structure |
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| CN110029737A (en) * | 2019-05-07 | 2019-07-19 | 河南绿建建筑科技有限公司 | Reinforcing bar square crossing built-in type wall beam connecting node |
| CN110273544A (en) * | 2019-05-22 | 2019-09-24 | 浙江精工钢结构集团有限公司 | The production method that part cladding steel reinforced concrete shear walls vertically splice tempering node |
| CN210947142U (en) * | 2019-09-19 | 2020-07-07 | 山东建科信息技术有限公司 | Assembled concrete structure post roof beam connecting steel node |
| CN111335464A (en) * | 2020-04-08 | 2020-06-26 | 浙江大学城市学院 | Fabricated concrete structure beam column connecting node and construction method thereof |
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