CN113846757A - Rigid connection node of reinforced concrete frame beam and steel secondary beam and construction method - Google Patents
Rigid connection node of reinforced concrete frame beam and steel secondary beam and construction method Download PDFInfo
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- CN113846757A CN113846757A CN202111276058.5A CN202111276058A CN113846757A CN 113846757 A CN113846757 A CN 113846757A CN 202111276058 A CN202111276058 A CN 202111276058A CN 113846757 A CN113846757 A CN 113846757A
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- secondary beam
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- reinforced concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
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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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a rigid connection node of a reinforced concrete frame beam and a steel secondary beam, which comprises a connecting piece arranged on the steel secondary beam and an embedded piece embedded in the reinforced concrete frame beam, wherein the steel secondary beam is connected with the embedded piece through the connecting piece to realize rigid connection with the reinforced concrete frame beam, supporting pieces are arranged on an upper flange and a lower flange of the steel secondary beam, and the other end of each supporting piece is connected with the embedded piece. A construction method of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam comprises the following steps: construction preparation; template engineering; placing engineering materials; connecting and checking the nodes; pouring concrete; and curing and stripping the cast concrete and checking and accepting. The construction difficulty of the reinforced concrete frame beam is simplified, the manufacturing cost is reduced, and the construction period is saved.
Description
Technical Field
The invention relates to the field of industrial buildings, in particular to a rigid connection node of a reinforced concrete frame beam and a steel secondary beam and a construction method.
Background
In the field of industrial buildings, the structural form of the reinforced concrete frame and the steel secondary beam combined floor slab is commonly used for important buildings such as main plants and the like. Usually, the reinforced concrete frame beam and the frame column form a stable frame main structure, and the steel secondary beam and the floor slab play a role of transferring floor load to the frame beam.
Generally, in order to reduce the section of the steel secondary beam and further reduce the steel consumption, rigid connection nodes are mostly adopted for connecting the steel secondary beam and the reinforced concrete frame beam, namely, the beam end of the steel secondary beam can bear bending moment. At present, the connection mode of the steel secondary beam and the reinforced concrete frame beam is more applied by two types, which are respectively:
ear picking type (fig. 1): the reinforced concrete main beam is cast in situ on the secondary beam side and has a width of 250mm and a height of not less than 300 mm. The steel secondary beam is placed on the picking lug and welded with the top surface of the picking lug and the beam side embedded part. The node has the advantages that the reinforced concrete ear-picking shear-resistant capability is strong, and the application is the widest at present; the defects are that the joint hinge characteristics are not obvious, and the cantilever lugs are additionally arranged on the beam sides, so that the concrete construction difficulty is increased, the civil engineering cost is increased, and meanwhile, the construction period is longer.
Insert (fig. 2): after the upper flange of the steel secondary beam is cut, the steel secondary beam is directly inserted into the reinforced concrete main beam and integrally cast with the reinforced concrete main beam, and the insertion depth is generally 200 mm. The node has the advantages that the girder does not need to be provided with the lifting lug, the floor and the reinforced concrete girder can be poured simultaneously in an insertion mode, the construction speed is high, and the node is applied to individual projects at present; the main beam stirrup can be broken after the steel secondary beam is inserted, the steel secondary beam is large in size, stress concentration is obvious after the steel secondary beam is inserted into the main beam, and structural reliability is greatly influenced by construction quality.
Disclosure of Invention
In view of the defects in the field of industrial buildings at present, the invention provides the rigid connection node of the reinforced concrete frame beam and the steel secondary beam and the construction method, which simplify the construction difficulty of the reinforced concrete frame beam, reduce the manufacturing cost and save the construction period; and the frame beam is not required to be heightened by the ear, so that the installation space of equipment and pipelines under the beam is saved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a reinforced concrete frame roof beam and steel secondary beam rigid connection node, reinforced concrete frame roof beam and steel secondary beam rigid connection node are including setting up connecting piece on the steel secondary beam and pre-buried piece of burying in reinforced concrete frame roof beam, the steel secondary beam passes through the connecting piece and buries the rigid connection that the piece links to each other realization and reinforced concrete frame roof beam, be equipped with support piece on the top flange and the bottom flange of steel secondary beam, support piece's the other end with bury the piece and be connected.
According to one aspect of the invention, the support comprises an upper flange angle steel arranged on an upper flange of the steel secondary beam and a lower flange angle steel arranged on a lower flange of the steel secondary beam, and the lower flange angle steel and the upper flange angle steel are connected with the embedded part through welding or bolts.
According to one aspect of the invention, the steel secondary beam is made of I-shaped steel, the connecting piece is arranged at the belly of the steel secondary beam and is made of steel plates or angle steel, and the connecting piece is arranged at the belly of the steel secondary beam facing the reinforced concrete frame beam.
According to one aspect of the invention, the left, lower and right sides of the embedded part are 50mm beyond the outermost edge of the connecting piece, and the upper edge line of the embedded part is aligned with the top line of the steel secondary beam and the bottom line of the floor slab.
According to one aspect of the invention, the outermost side of the upper flange angle steel exceeds the upper flange edge line of the steel secondary beam by 50mm, and the inner side of the upper flange angle steel abuts against the starting point of the chamfer line of the steel secondary beam.
A construction method of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam comprises the following steps:
construction preparation;
template engineering, namely manufacturing a template and a formwork for a concrete column required by construction;
placing engineering materials, and placing the embedded part, the steel bar and the steel secondary beam at a preset construction position;
connecting and checking the nodes, connecting the steel secondary beam, the reinforced concrete frame beam and each connecting part, and checking the connecting strength;
pouring concrete, and simultaneously pouring concrete on the reinforced concrete frame beam and the floor slab concrete;
and curing and stripping the cast concrete and checking and accepting.
According to one aspect of the invention, the formwork engineering stage is required to ensure that the reinforced concrete frame beam, the secondary steel beam and the embedded part have reliable supports to avoid deformation and displacement during concrete pouring and vibrating; and ensuring that the elevation of the top of the steel secondary beam is the elevation of the bottom of the plate and the levelness of the steel secondary beam.
According to one aspect of the invention, the curing, form removal and acceptance of the poured concrete are specifically as follows: and (3) watering and maintaining the cast concrete, and after the maintenance period meets the construction acceptance standard, detaching the formwork to ensure that the strength of the reinforced concrete reaches the standard, and after detaching the formwork, enhancing the maintenance and observation. .
According to one aspect of the invention, the construction preparation stage is specifically as follows: preparing materials for construction, measuring the distance and the height of a construction position, and performing measurement and setting, elevation measurement, scaffold erection, embedded part, node connecting piece machining and the like.
The implementation of the invention has the advantages that:
the invention provides a rigid connection node of a reinforced concrete frame beam and a steel secondary beam, which comprises a connecting piece arranged on the steel secondary beam and an embedded piece embedded in the reinforced concrete frame beam, wherein the steel secondary beam is connected with the embedded piece through the connecting piece to realize rigid connection with the reinforced concrete frame beam, supporting pieces are arranged on an upper flange and a lower flange of the steel secondary beam, and the other end of each supporting piece is connected with the embedded piece. A construction method of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam comprises the following steps: construction preparation; template engineering, namely manufacturing a template and a formwork for a concrete column required by construction; placing engineering materials, and placing the embedded part, the steel bar and the steel secondary beam at a preset construction position; connecting and checking the nodes, connecting the steel secondary beam, the reinforced concrete frame beam and each connecting part, and checking the connecting strength; pouring concrete, and simultaneously pouring concrete on the reinforced concrete frame beam and the floor slab concrete; and curing and stripping the cast concrete and checking and accepting. The construction difficulty of the reinforced concrete frame beam is simplified, the manufacturing cost is reduced, and the construction period is saved; and the frame beam is not required to be heightened by the ear, so that the installation space of equipment and pipelines under the beam is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a conventional design 1 according to the present invention;
FIG. 2 is a schematic structural diagram of a prior art design 2 according to the present invention;
fig. 3 is a schematic structural view of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam according to the present invention;
FIG. 4 is a schematic cross-sectional view taken at A in FIG. 3 according to the present invention;
fig. 5 is a step diagram of a construction method of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3-4, a reinforced concrete frame roof beam 5 and steel secondary beam 2 rigid connection node, reinforced concrete frame roof beam 5 and steel secondary beam 2 rigid connection node is including setting up connecting piece 1 on steel secondary beam 2 and pre-buried piece 4 of burying in reinforced concrete frame roof beam 5, steel secondary beam 2 links to each other the realization with reinforced concrete frame roof beam 5's rigid connection through connecting piece 1 and buried piece 4, be equipped with support piece on the top flange and the bottom flange of steel secondary beam 2, support piece's the other end is connected with buried piece 4.
According to one aspect of the invention, the supporting piece comprises an upper flange angle steel 6 arranged on an upper flange of the steel secondary beam 2 and a lower flange angle steel 5 arranged on a lower flange of the steel secondary beam 2, and the lower flange angle steel 5 and the upper flange angle steel 6 are connected with the embedded piece 4 through welding or bolts.
According to one aspect of the invention, the steel secondary beam 2 is made of I-shaped steel, the connecting piece 1 is arranged at the belly of the steel secondary beam, the connecting piece 1 is made of steel plates or angle steel, and the connecting piece 1 is arranged at the belly of the steel secondary beam 2 facing to the reinforced concrete frame beam 5.
According to one aspect of the invention, the left, lower and right edges of the embedded part 4 are 50mm beyond the outermost edge of the connecting part 1, and the upper edge line of the embedded part 4 is aligned with the top line of the steel secondary beam 2 and the bottom line of the floor slab.
According to one aspect of the invention, the outermost side of the upper flange angle steel 6 exceeds 50mm of the edge line of the upper flange of the steel secondary beam 2, and the inner side of the upper flange angle steel abuts against the starting point of the chamfer line of the steel secondary beam 2.
The connection between the upper flange angle steel and the welding seam of the upper flange of the secondary steel beam is determined by calculation and is usually designed according to the equal strength principle.
The connection node of the lower flange angle steel and the lower flange of the steel secondary beam is determined by calculation and is usually designed according to the equal strength principle.
Factory building floor steel secondary beam and frame roof beam connected node, a conventional design adopts "choose ear formula", for choosing the ear to lead to the cross-section of frame roof beam to need to be higher than the girder steel more than 300mm, more than 500mm than the frame roof beam is wide, be unfavorable for arranging and installing of process pipeline, steel secondary beam load is very big moreover, the node load that passes to the frame roof beam exceeds 120t even, the moment of torsion that the frame girder was passed to the steel secondary beam is very big, lead to the area to choose the frame roof beam cross-section of ear and also can increase nearly 20%.
Compared with the ear type, the innovative technology cancels the ear for picking the steel secondary beam side, adopts the embedded part arranged on the frame beam side, and connects the steel secondary beam by the connecting part, thus solving the problem that the height of the main beam is influenced by the height of the steel secondary beam and the height of the ear for picking, effectively reducing the height of the main beam and providing convenience for process arrangement.
As shown in fig. 5, a construction method for a rigid connection node between a reinforced concrete frame beam and a steel secondary beam includes the following steps:
s1, construction preparation;
the construction preparation stage specifically comprises the following steps: preparing materials for construction, measuring the distance and the height of a construction position, and performing measurement and setting, elevation measurement, scaffold erection, embedded part, node connecting piece machining and the like.
S2, template engineering, namely, manufacturing a template and a formwork for the concrete column required by construction;
in the formwork engineering stage, the reinforced concrete frame beam, the secondary steel beam and the embedded part are required to be reliably supported, so that deformation and displacement are avoided when the vibrated concrete is poured; and ensuring that the elevation of the top of the steel secondary beam is the elevation of the bottom of the plate and the levelness of the steel secondary beam.
S3, placing engineering materials, and placing the embedded parts, the steel bars and the steel secondary beams at preset construction positions;
s4, connecting and checking the nodes, connecting the steel secondary beam, the reinforced concrete frame beam and each connecting part, and checking the connecting strength;
s5, pouring concrete, and pouring the concrete on the reinforced concrete frame beam and the floor slab simultaneously;
and S6, curing and stripping the poured concrete and checking and accepting.
The maintenance, form removal and acceptance inspection of the poured concrete specifically comprises the following steps: and (3) watering and maintaining the cast concrete, and after the maintenance period meets the construction acceptance standard, detaching the formwork to ensure that the strength of the reinforced concrete reaches the standard, and after detaching the formwork, enhancing the maintenance and observation. .
According to one aspect of the invention, the formwork engineering stage is required to ensure that the reinforced concrete frame beam, the secondary steel beam and the embedded part have reliable supports to avoid deformation and displacement during concrete pouring and vibrating; and ensuring that the elevation of the top of the steel secondary beam is the elevation of the bottom of the plate and the levelness of the steel secondary beam.
Construction attention:
1. a construction preparation stage: the method comprises the following steps of performing measurement paying-off, elevation measurement, scaffold erection, embedded part machining, node connecting piece machining and the like;
2. and (3) template engineering stage: the reliable support of the reinforced concrete frame beam, the steel secondary beam and the embedded part is required to be ensured in key points, and deformation and displacement are avoided when the vibrated concrete is poured; moreover, the top elevation of the steel secondary beam is ensured to be the bottom elevation of the plate and the levelness of the steel secondary beam;
3. placing the embedded part and the steel secondary beam: the embedded parts and the steel secondary beam can be connected at a position with good construction conditions, and the whole body is hoisted in place;
4. and (3) concrete pouring stage: the frame beam and the floor slab concrete can be poured simultaneously, so that the problems of long construction period and the like caused by secondary pouring in the traditional process are solved;
5. and (3) maintaining the up-to-standard form removal stage: the strength of the reinforced concrete is required to reach the standard, the form can be disassembled after the maintenance period is sufficient and the construction acceptance standard is met, and the maintenance and observation are required to be enhanced after the form is disassembled.
Innovative technique node construction is very convenient, need not like "choose ear formula" set up in frame roof beam side and choose the ear, also can not appear "bayonet" steel secondary beam and stretch into and block the stringpiece and pass behind the concrete frame roof beam to still need stretch into the concrete beam section upper limb flange with the steel secondary beam and cut off. Compared with the 'insertion type', the novel technology avoids the insertion of the steel secondary beam into the reinforced concrete frame beam, so that larger additional stress cannot be generated at the node, and the construction requirement is reduced. The reliability and the safety of the nodes are higher.
The innovative technology has the characteristics of safe structure, convenient construction, appropriate material consumption and batch processing of accessories. Therefore, the construction difficulty can be reduced, the construction speed is accelerated and the construction quality is improved on the premise of ensuring that the stress characteristics of the structure are met.
Short construction period
Because the innovative technology 'embedded type' node form is simple, the frame beam and the floor can be simultaneously bound with reinforcing steel bars in the construction, concrete is poured simultaneously, the secondary binding template caused by constructing the floor after constructing the frame is avoided, and the construction period is greatly shortened.
The implementation of the invention has the advantages that:
the invention provides a rigid connection node of a reinforced concrete frame beam and a steel secondary beam, which comprises a connecting piece arranged on the steel secondary beam and an embedded piece embedded in the reinforced concrete frame beam, wherein the steel secondary beam is connected with the embedded piece through the connecting piece to realize rigid connection with the reinforced concrete frame beam, supporting pieces are arranged on an upper flange and a lower flange of the steel secondary beam, and the other end of each supporting piece is connected with the embedded piece. A construction method of a rigid connection node of a reinforced concrete frame beam and a steel secondary beam comprises the following steps: construction preparation; template engineering, namely manufacturing a template and a formwork for a concrete column required by construction; placing engineering materials, and placing the embedded part, the steel bar and the steel secondary beam at a preset construction position; connecting and checking the nodes, connecting the steel secondary beam, the reinforced concrete frame beam and each connecting part, and checking the connecting strength; pouring concrete, and simultaneously pouring concrete on the reinforced concrete frame beam and the floor slab concrete; and curing and stripping the cast concrete and checking and accepting. The construction difficulty of the reinforced concrete frame beam is simplified, the manufacturing cost is reduced, and the construction period is saved; and the frame beam is not required to be heightened by the ear, so that the installation space of equipment and pipelines under the beam is saved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. The utility model provides a reinforced concrete frame roof beam and steel secondary beam rigid connection node which characterized in that: the reinforced concrete frame beam and steel secondary beam rigid connection node comprises a connecting piece arranged on the steel secondary beam and embedded pieces embedded in the reinforced concrete frame beam, the steel secondary beam is connected with the embedded pieces through the connecting piece to realize rigid connection with the reinforced concrete frame beam, support pieces are arranged on an upper flange and a lower flange of the steel secondary beam, and the other end of each support piece is connected with the embedded pieces.
2. A reinforced concrete frame beam and steel secondary beam rigid connection node as claimed in claim 1, wherein: the supporting piece comprises upper flange angle steel arranged on an upper flange of the steel secondary beam and lower flange angle steel arranged on a lower flange of the steel secondary beam, and the lower flange angle steel and the upper flange angle steel are connected with the embedded piece through welding or bolts.
3. A reinforced concrete frame beam and steel secondary beam rigid connection node as claimed in claim 2, wherein: the steel secondary beam is made of I-shaped steel, the connecting piece is arranged on the belly of the steel secondary beam and is made of steel plates or angle steel, and the connecting piece is arranged on the belly of the steel secondary beam facing the reinforced concrete frame beam.
4. A reinforced concrete frame beam and steel secondary beam rigid connection node as claimed in claim 3, wherein: the left, lower and right edges of the embedded part should exceed 50mm of the outermost side edge of the connecting part, and the upper edge line of the embedded part is aligned with the top line of the steel secondary beam and the bottom line of the floor slab.
5. A reinforced concrete frame beam and steel secondary beam rigid connection node according to claim 4, wherein: the outermost side of the upper flange angle steel exceeds the upper flange side line of the steel secondary beam by 50mm, and the inner side of the upper flange angle steel abuts against the starting point of the steel secondary beam chamfer line.
6. A construction method for a rigid connection node of a reinforced concrete frame beam and a steel secondary beam is characterized by comprising the following steps: the construction method of the rigid connection node of the reinforced concrete frame beam and the steel secondary beam comprises the following steps:
construction preparation;
template engineering, namely manufacturing a template and a formwork for a concrete column required by construction;
placing engineering materials, and placing the embedded part, the steel bar and the steel secondary beam at a preset construction position;
connecting and checking the nodes, connecting the steel secondary beam, the reinforced concrete frame beam and each connecting part, and checking the connecting strength;
pouring concrete, and simultaneously pouring concrete on the reinforced concrete frame beam and the floor slab concrete;
and curing and stripping the cast concrete and checking and accepting.
7. The construction method of the rigid connection node of the reinforced concrete frame beam and the steel secondary beam, according to claim 6, is characterized in that: in the formwork engineering stage, the reinforced concrete frame beam, the secondary steel beam and the embedded part are required to be reliably supported, so that deformation and displacement are avoided when the vibrated concrete is poured; and ensuring that the elevation of the top of the steel secondary beam is the elevation of the bottom of the plate and the levelness of the steel secondary beam.
8. The construction method of the rigid connection node of the reinforced concrete frame beam and the steel secondary beam, according to claim 7, is characterized in that: the maintenance, form removal and acceptance inspection of the poured concrete specifically comprises the following steps: and (3) watering and maintaining the cast concrete, and after the maintenance period meets the construction acceptance standard, detaching the formwork to ensure that the strength of the reinforced concrete reaches the standard, and after detaching the formwork, enhancing the maintenance and observation. .
9. The construction method of the rigid connection node of the reinforced concrete frame beam and the steel secondary beam, according to claim 8, is characterized in that: the construction preparation stage specifically comprises the following steps: preparing materials for construction, measuring the distance and the height of a construction position, and performing measurement and setting, elevation measurement, scaffold erection, embedded part, node connecting piece machining and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276058.5A CN113846757A (en) | 2021-10-29 | 2021-10-29 | Rigid connection node of reinforced concrete frame beam and steel secondary beam and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276058.5A CN113846757A (en) | 2021-10-29 | 2021-10-29 | Rigid connection node of reinforced concrete frame beam and steel secondary beam and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113846757A true CN113846757A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111276058.5A Pending CN113846757A (en) | 2021-10-29 | 2021-10-29 | Rigid connection node of reinforced concrete frame beam and steel secondary beam and construction method |
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| Country | Link |
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| CN (1) | CN113846757A (en) |
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2021
- 2021-10-29 CN CN202111276058.5A patent/CN113846757A/en active Pending
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