CN109826316B - Beam-beam joint based on section steel in assembled reinforced concrete structure - Google Patents
Beam-beam joint based on section steel in assembled reinforced concrete structure Download PDFInfo
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- CN109826316B CN109826316B CN201910226005.9A CN201910226005A CN109826316B CN 109826316 B CN109826316 B CN 109826316B CN 201910226005 A CN201910226005 A CN 201910226005A CN 109826316 B CN109826316 B CN 109826316B
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Abstract
A beam-beam joint based on section steel in an assembled reinforced concrete structure belongs to the technical field of reinforced concrete construction. The node is by the crisscross shaped steel connection structure that the shaped steel is connected and is constituted, and one end cup joints in reinforced concrete roof beam, and the other end is crisscross cooperation link, and two cooperation link pass through the bolt anchor and connect, then pour concrete, form wholly after the maintenance is accomplished. The invention discloses a novel beam end connecting structure which adopts profile steel as a material of an assembled node and is used for connecting a precast reinforced concrete beam on site. All components are processed in a factory and are directly assembled and connected after being transported to a construction site, so that on-site wet operation is reduced, and construction efficiency is improved. The invention adopts the method that the precast reinforced concrete beam end is connected with the longitudinal steel plate through the stress longitudinal ribs by welding, and the joints are penetrated and screwed on site by bolts, so that the construction efficiency is improved, and the on-site wet operation is reduced.
Description
Technical Field
The invention belongs to the technical field of reinforced concrete buildings, and particularly relates to an assembled reinforced concrete beam.
Background
The prefabricated assembled concrete structure is a concrete structure form in which all or part of members such as beams and columns required by the structure are processed in factories, and after maintenance is finished, all the members are connected into an integral stress structure by a certain assembly means on a construction site, and the construction process is generally as follows:
structural design, factory prefabrication, transportation site, site installation and later decoration
Because part or all of the concrete components are prefabricated in a factory, the components can be manufactured into various shapes, and the manufacturing quality of the components can be ensured, so that for some components with complex forms, the factory prefabrication can be more convenient than the cast-in-place concrete structure.
Compared with the traditional cast-in-place concrete structure, the prefabricated assembled concrete structure has the following characteristics:
(1) The labor efficiency is improved, and the working time is reduced
(2) The field wet workload is reduced, and the construction period is shortened
(3) The building quality is obviously improved
(4) The labor condition is improved
(5) Saving material and reducing dead weight
(6) Is less affected by seasons
(7) Is favorable for environmental protection and has good social benefit
The construction industry in the present stage of China faces the problems of labor shortage, serious environmental pollution and the like. Therefore, the prefabricated concrete structure has great significance for the industrialized development of the buildings in China, the improvement of the production efficiency and the energy conservation. Thus, there is a need for a new node form to match.
The connection nodes of prefabricated components in prefabricated concrete structures are critical to the structural integrity. According to different connection modes, the connection nodes of the prefabricated concrete structure can be divided into two modes, namely a wet connection node and a dry connection node. The wet connection is formed by combining prefabricated components into a whole by means of cast-in-place concrete and the like. Because the connection requires procedures such as site formwork support, concrete pouring, concrete curing and the like, development and application of the prefabricated assembled concrete structure are hindered to a certain extent. The dry connection is a mode of connecting prefabricated parts into a whole through prestressed tendons, embedded parts, bolts, pull rods and the like on a construction site. The dry connection of the prefabricated concrete structure has the advantages of high construction speed, less wet operation, material saving and the like. The defect is that the cost is higher than that of steel, and the cost is slightly higher.
Disclosure of Invention
Aiming at the technical problems, the invention provides the assembled reinforced concrete beam, which can realize the assembly of a common reinforced concrete building structure, substantially improve the assembly rate and the construction efficiency of the common reinforced concrete structure and ensure the convenience and the quality assurance of the assembly of reinforced concrete beam-beam joints.
The aim of the invention is realized by the following technical scheme:
the invention relates to a beam-beam joint based on section steel in an assembled reinforced concrete structure, which is a staggered section steel connecting structure formed by connecting section steel, wherein one end of the joint is sleeved on a reinforced concrete beam, the other end of the joint is a staggered matched connecting end, the two matched connecting ends are connected through bolt anchoring, then concrete is poured, and the whole body is formed after maintenance is completed.
Further, the staggered type steel connecting structure is a grid frame-shaped structure formed by connecting a bottom plate, a connecting cover plate, three transverse steel plates and a plurality of longitudinal steel plates, wherein the three transverse steel plates of the grid frame-shaped structure are arranged in parallel at the same interval, the end parts of the three transverse steel plates are different in length, the bottom of the grid frame-shaped structure is provided with the bottom plate, the transverse steel plates at two sides of one end connected with a precast reinforced concrete beam are longer than the middle transverse steel plate, the longitudinal steel plates I are arranged at the end parts of the middle transverse steel plates, and the connecting cover plate is arranged at one end of the top of the transverse steel plates at two sides connected with the precast reinforced concrete beam, so that the bottom plate, the transverse steel plates at two sides and the longitudinal steel plates I form a sleeve frame connected with the precast reinforced concrete beam; the other ends of the three transverse steel plates are matched connection ends, the end portions are connected with an end plate I and an end plate II, the end plate I and the end plate II are arranged in parallel in a staggered mode, namely, the end faces of the matched connection ends are of a tri-fold structure, and two adjacent faces are perpendicular.
Further, a longitudinal steel plate II and a longitudinal steel plate III are symmetrically arranged between the adjacent transverse steel plates respectively, the longitudinal steel plate II is close to the precast reinforced concrete beam end and is connected with longitudinal steel bars in the precast reinforced concrete beam passing through the longitudinal steel plate I, the longitudinal steel plate III is close to the matched connection end, when the longitudinal steel plate III is matched and connected with the matched connection end plate and the longitudinal steel plate III 'on the corresponding side of the staggered steel bar connection structure of the other precast reinforced concrete beam end, the longitudinal steel plate III' is connected through high-strength bolts in a penetrating mode, and the middle transverse steel plates of the matched connection ends of the two nodes are connected through bolt anchoring.
Further, a distance L1 between the longitudinal steel plates I and II near the precast reinforced concrete beam end is 150-200mm.
Further, a distance L2 between the longitudinal steel plate III arranged close to the matched connection end and the matched connection end plate I is 250-300mm. The distance L3 between the longitudinal steel plate III and the end plate II of the matched connection end is 500-600mm.
Further, the distance L4 between the two lateral steel plates and the middle lateral steel plate is 300-350mm near the precast reinforced concrete beam end.
Further, the middle transverse steel plate is divided into two parts, and the two parts are respectively arranged at two sides of the longitudinal steel plate III close to the matched connection end.
The beneficial effects of the invention are as follows:
(1) The invention discloses a novel beam end connecting structure which adopts profile steel as a material of an assembled node and is used for connecting a precast reinforced concrete beam on site. All components are processed in a factory and are directly assembled and connected after being transported to a construction site, so that on-site wet operation is reduced, and construction efficiency is improved.
(2) The invention adopts the method that the precast reinforced concrete beam end is connected with the longitudinal steel plate through the stress longitudinal ribs by welding, and the joints are penetrated and screwed on site by bolts, so that the construction efficiency is improved, and the on-site wet operation is reduced.
(3) The invention has definite force transmission, simple structure, no technical difficulty in design and processing and strong operability.
Drawings
FIG. 1 is a schematic diagram of a split structure of the present invention.
Fig. 2 is a schematic view of the assembled structure of fig. 1.
Fig. 3 is a schematic cross-sectional view of the junction of fig. 2.
Fig. 4 is a top view of fig. 2.
In the figure: 1. the prefabricated reinforced concrete beam I, 2, the prefabricated reinforced concrete beam II, 31, two lateral transverse steel plates, 32, middle transverse steel plates, 41', longitudinal steel plates I, 42', longitudinal steel plates II, 43', longitudinal steel plates III, 51, end plates I, 52, end plates II, 6, connecting cover plates, 7, bottom plates, 8, high-strength bolts, 9, longitudinal steel bars, 10, bolts, 11, bolt holes.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Examples: as shown in fig. 1-4, the beam-beam joint based on the section steel in the assembled reinforced concrete structure is a staggered section steel connecting structure formed by connecting section steel, one end of the staggered section steel connecting structure is sleeved on the reinforced concrete beam, the other end of the staggered section steel connecting structure is a staggered matched connecting end, the two matched connecting ends are connected through bolt anchoring, then concrete is poured, and an integral joint is formed after maintenance is completed.
As shown in fig. 1, taking connection with a precast reinforced concrete beam i 1 as an example, the staggered steel bar connection structure is a grid-frame structure formed by connecting a bottom plate 7, a connection cover plate 6, three transverse steel plates and a plurality of longitudinal steel plates, wherein the three transverse steel plates of the grid-frame structure are arranged in parallel at the same interval, the end parts are different in length, the bottom is provided with the bottom plate 7, two transverse steel plates 31 at one end connected with the precast reinforced concrete beam i 1 are longer than a middle transverse steel plate 32, the end parts of the middle transverse steel plates 32 are provided with longitudinal steel plates i 41, one end of the precast reinforced concrete beam i 1 connected with the top of the two transverse steel plates 31 is provided with the connection cover plate 6, so that the bottom plate 7, the two transverse steel plates 31 and the longitudinal steel plates i 41 form a sleeve frame connected with the precast reinforced concrete beam i 1; the other ends of the three transverse steel plates are matched connection ends, the end portions are connected with an end plate I51 and an end plate II 52, the end plates I51 and the end plate II 52 are arranged in parallel in a staggered mode, namely, the end faces of the matched connection ends are of a three-folded-surface structure, and two adjacent surfaces are perpendicular. Wherein one side transverse steel plate 31' and the middle transverse steel plate 32 are flush in end, connecting end plate I51, the other side transverse steel plate 31 is shorter in end than the middle transverse steel plate 32, and end connecting end plate II 52, and the end plate II 52 is perpendicular to the middle transverse steel plate 32.
Longitudinal steel plates II 42 and 42 'and longitudinal steel plates III 43 and 43' are symmetrically arranged between the adjacent transverse steel plates respectively, the longitudinal steel plates II 42 and 42 'are close to the precast reinforced concrete beam ends and are connected with longitudinal steel bars 9 in the precast reinforced concrete beam passing through the longitudinal steel plate I41, the longitudinal steel plates III 43 and 43' are close to the matched connection ends, and when the longitudinal steel plates III and 43 'are matched and connected, the longitudinal steel plates III and 43' are connected with the matched connection end plates, the matched connection end plates of the corresponding sides of the staggered steel connecting structure of the other precast reinforced concrete beam end, and the longitudinal steel plates III are connected in a penetrating manner through high-strength bolts 8, and the middle transverse steel plates 32 of the matched connection ends of the two nodes are connected in an anchoring manner through bolts 10. The longitudinal steel plates I41 can be integrated or in a split structure, and are symmetrically welded at the end parts of the middle transverse steel plate 32 during split.
The distance L1 between the longitudinal steel plate I41 and the longitudinal steel plate II 42 near the precast reinforced concrete beam end is 150mm. The distance L2 between the longitudinal steel plate III 43 arranged near the matched connection end and the matched connection end plate I51 is 250mm. The distance L3 between the longitudinal steel plate iii and the mating connection end plate 52 is 500mm. The lateral distance L4 between the lateral steel plates 31 on both sides and the middle lateral steel plate 32 is 300mm near the precast reinforced concrete beam end. The middle transverse steel plate 32 may be two parts, and is separately disposed at two sides of the longitudinal steel plate iii 43 near the mating connection end.
When in implementation, the specific steps are as follows:
1. and determining the section size of the test beam according to the actual construction requirement, calculating the reinforcement ratio of the test beam, determining the strength grade and the diameter of the longitudinal steel bars, the stirrups and the high-strength bolts, the distance between the stirrups, and binding the strength grade of the steel reinforcement cage and the section steel.
2. Assembling staggered type steel connecting structure: the staggered profile steel end plates 51 and 52, the longitudinal steel plate I41 close to the beam end, the middle transverse steel plate 32 and the longitudinal steel plates III 43 and 43' close to the matched connection end are subjected to reserved bolt holes; the inner longitudinal steel plates ii 42, 42', the longitudinal steel plates iii 43, 43' are welded to the intermediate lateral steel plate 32 and the lateral steel plates 31, 32', and the bottom plate 7 is provided at the bottom of the lateral steel plates 31, 32'.
3. And when the prefabricated reinforced concrete beam is supported, the welded staggered steel section connecting structure is sleeved at one end of the prefabricated reinforced concrete beam, and the stressed longitudinal steel bar 9 in the prefabricated reinforced concrete beam passes through the longitudinal steel plate I41 close to the beam end and is welded with the middle longitudinal steel plates II 42 and 42'.
4. And after the precast reinforced concrete beam reaches the strength after 28 days of standard curing, the precast reinforced concrete beam is transported to the site for in-place assembly.
5. And penetrating the transverse high-strength bolt and the longitudinal high-strength bolt into the reserved bolt holes, and screwing by using a spanner.
6. And pouring concrete in the staggered section steel connecting structure to form an integral concrete beam.
Example 2: this example differs from example 1 in that: in order to adapt to different concrete beams and ensure the assembly strength, the distance L1 between the longitudinal steel plate I41 and the longitudinal steel plate II 42, which are close to the ends of the precast reinforced concrete beams, is 200mm in the example. The distance L2 between the longitudinal steel plate III 43 arranged near the matched connection end and the matched connection end plate I51 is 280mm. The distance L3 between the longitudinal steel plate iii and the mating connection end plate 52 is 550mm. The lateral distance L4 between the lateral steel plates 31 on both sides and the middle lateral steel plate 32 is 300mm near the precast reinforced concrete beam end.
Example 3: this example differs from example 1 in that: in order to adapt to different concrete beams and ensure the assembly strength, the distance L1 between the longitudinal steel plate I41 and the longitudinal steel plate II 42, which are close to the ends of the precast reinforced concrete beams, is 180mm in the example. The distance L2 between the longitudinal steel plate III 43 arranged near the matched connection end and the matched connection end plate I51 is 300mm. The distance L3 between the longitudinal steel plate iii and the mating connection end plate 52 is 600mm. The lateral distance L4 between the lateral steel plates 31 on both sides and the middle lateral steel plate 32 is 350mm near the precast reinforced concrete beam end.
Claims (4)
1. A beam-to-beam joint based on section steel in an assembled reinforced concrete structure, characterized in that: the node is a staggered steel connecting structure formed by connecting steel sections, one end of the node is sleeved on the reinforced concrete beam, the other end of the node is a staggered matched connecting end, the two matched connecting ends are connected through bolt anchoring, then concrete is poured, and the whole body is formed after maintenance is completed;
the staggered type steel connecting structure is a grid frame-shaped structure formed by connecting a bottom plate, a connecting cover plate, three transverse steel plates and a plurality of longitudinal steel plates, wherein the three transverse steel plates of the grid frame-shaped structure are arranged in parallel at the same interval, the end parts of the three transverse steel plates are different in length, the bottom of the grid frame-shaped structure is provided with the bottom plate, the transverse steel plates at the two sides of one end connected with a precast reinforced concrete beam are longer than the middle transverse steel plate, the end parts of the middle transverse steel plates are provided with the longitudinal steel plates I, and the connecting cover plate is arranged at the top of the transverse steel plates at the two sides of one end connected with the precast reinforced concrete beam, so that the bottom plate, the transverse steel plates at the two sides and the longitudinal steel plates I form a sleeve frame connected with the precast reinforced concrete beam; the other ends of the three transverse steel plates are matched connection ends, the end parts of the three transverse steel plates are connected with an end plate I and an end plate II, the end plates I and the end plate II are arranged in parallel in a staggered mode, namely, the end surfaces of the matched connection ends are of a three-folded-surface structure, and two adjacent surfaces are vertical;
a longitudinal steel plate II and a longitudinal steel plate III are symmetrically arranged between the adjacent transverse steel plates respectively, the longitudinal steel plate II is close to the precast reinforced concrete beam end and is connected with a longitudinal steel bar in the precast reinforced concrete beam passing through the longitudinal steel plate I, the longitudinal steel plate III is close to the matched connecting end, when the longitudinal steel plate III is matched and connected, the longitudinal steel plate III is connected with the matched connecting end plate and the matched connecting end plate of the corresponding side of the staggered steel section connecting structure of the other precast reinforced concrete beam end in a penetrating way through a high-strength bolt, and the middle transverse steel plates of the matched connecting ends of the two nodes are connected through bolt anchoring; and the distance L4 between the two lateral steel plates and the middle lateral steel plate is 300-350mm near the precast reinforced concrete beam end.
2. The beam-to-beam joint based on section steel in fabricated reinforced concrete structures according to claim 1, wherein: the distance L1 between the longitudinal steel plate I and the longitudinal steel plate II near the precast reinforced concrete beam end is 150-200mm.
3. The beam-to-beam joint based on section steel in fabricated reinforced concrete structures according to claim 1, wherein: the distance L2 between the longitudinal steel plate III arranged close to the matched connecting end and the end plate I of the matched connecting end is 250-300mm; the distance L3 between the longitudinal steel plate III and the end plate II of the matched connection end is 500-600mm.
4. The beam-to-beam joint based on section steel in fabricated reinforced concrete structures according to claim 1, wherein: the middle transverse steel plate is divided into two parts, and is respectively arranged at two sides of the longitudinal steel plate III close to the matched connection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910226005.9A CN109826316B (en) | 2019-03-25 | 2019-03-25 | Beam-beam joint based on section steel in assembled reinforced concrete structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910226005.9A CN109826316B (en) | 2019-03-25 | 2019-03-25 | Beam-beam joint based on section steel in assembled reinforced concrete structure |
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| CN109826316A CN109826316A (en) | 2019-05-31 |
| CN109826316B true CN109826316B (en) | 2023-10-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541433A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Fabricated concrete hooking type joint |
| CN104912190A (en) * | 2015-06-17 | 2015-09-16 | 淮海工学院 | Dry type joggle frame structure |
| KR101568194B1 (en) * | 2014-12-15 | 2015-11-12 | (주)서현컨스텍 | Pc member connection method using pc connector and pc structure therewith |
| CN105780923A (en) * | 2016-05-04 | 2016-07-20 | 福建工程学院 | Assembly structure of prefabricated concrete beam and concrete-filled steel tube column |
| CN209837284U (en) * | 2019-03-25 | 2019-12-24 | 沈阳建筑大学 | Beam-beam joint based on profile steel in assembly type reinforced concrete structure |
-
2019
- 2019-03-25 CN CN201910226005.9A patent/CN109826316B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541433A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Fabricated concrete hooking type joint |
| KR101568194B1 (en) * | 2014-12-15 | 2015-11-12 | (주)서현컨스텍 | Pc member connection method using pc connector and pc structure therewith |
| CN104912190A (en) * | 2015-06-17 | 2015-09-16 | 淮海工学院 | Dry type joggle frame structure |
| CN105780923A (en) * | 2016-05-04 | 2016-07-20 | 福建工程学院 | Assembly structure of prefabricated concrete beam and concrete-filled steel tube column |
| CN209837284U (en) * | 2019-03-25 | 2019-12-24 | 沈阳建筑大学 | Beam-beam joint based on profile steel in assembly type reinforced concrete structure |
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