CN113638487A - Local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure and construction method thereof - Google Patents
Local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure and construction method thereof Download PDFInfo
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- CN113638487A CN113638487A CN202110507728.3A CN202110507728A CN113638487A CN 113638487 A CN113638487 A CN 113638487A CN 202110507728 A CN202110507728 A CN 202110507728A CN 113638487 A CN113638487 A CN 113638487A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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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
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
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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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- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
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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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
- E04G21/123—Wire twisting tools
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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
- E04G21/14—Conveying or assembling building elements
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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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
Abstract
The invention discloses a staggered connection structure of a local superposed beam and a prefabricated column joint reinforcing steel bar and a construction method thereof. According to the invention, the beam end is partially arranged into the superposed beam, the connecting longitudinal bar is additionally arranged, and then the binding and lap joint are respectively carried out with the gluten of the partially superposed beam, so that the on-site reinforcement operation and the concrete pouring amount are reduced by adopting the connecting mode; meanwhile, high-performance concrete is poured behind the beam-column joint connection area, and the seismic performance of the joint is enhanced.
Description
Technical Field
The invention belongs to the technical field of assembly buildings, and particularly relates to a staggered connection structure of a local superposed beam and a prefabricated column joint steel bar and a construction method thereof.
Background
In the current assembly type building project, the assembly type structure beam column connection adopts the following scheme: and (3) selecting the prefabricated lower column to be connected with the superposed beam in a post-pouring manner, adding gluten of the superposed beam on a construction site after the prefabricated lower column and the superposed beam are hoisted, and finally pouring common concrete in a beam-column joint core area and a superposed beam cast-in-place layer.
The disadvantages of this connection scheme are: the site working procedures are complex, the site concrete pouring amount and the steel bar operation are more, the site construction efficiency is restricted, the construction quality of the node area of the prefabricated beam column is difficult to guarantee, and the overall anti-seismic performance of the fabricated building is influenced.
Disclosure of Invention
Technical problem to be solved
Based on the structure, the invention provides a staggered connection structure of a local superposed beam and a prefabricated column joint reinforcing steel bar and a construction method thereof, and aims to solve the technical problems of low construction efficiency and poor anti-seismic performance of an assembly type structure beam column connection scheme in the prior art.
(II) technical scheme
In order to solve the technical problems, the invention provides a local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure, which comprises a prefabricated lower column, a first-direction local superposed beam and a second-direction local superposed beam, wherein the prefabricated lower column is respectively prefabricated by reinforced concrete, the prefabricated lower column comprises a lower column main body and a lower column longitudinal reinforcing steel bar, a beam column joint core area is arranged right above the lower column main body, one end of the lower column longitudinal reinforcing steel bar is positioned in the lower column main body, and the other end of the lower column longitudinal reinforcing steel bar extends into the beam column joint core area;
the local superposed beam of first direction includes first coincide main part, first coincide main part includes first full precast beam section and locates first full precast beam section is close to the first local superposed beam section of beam column node core area one end, the upper portion of first local superposed beam section is the cast-in-place district of first local superposed beam, the local superposed beam of first direction still includes: the first partially-laminated beam bottom longitudinal steel bar and the first partially-laminated beam face longitudinal steel bar are arranged in the first laminated main body, one end of the first partially-laminated beam bottom longitudinal steel bar extends into the beam-column joint core area, one end of the first partially-laminated beam face longitudinal steel bar is arranged in the first fully-prefabricated beam section, and the other end of the first partially-laminated beam face longitudinal steel bar extends into the first partially-laminated beam cast-in-place area;
the local superposed beam of second direction includes the second coincide main part, the second coincide main part includes the whole precast beam section of second and locates the whole precast beam section of second is close to the local superposed beam section of second of beam column node core area one end, the upper portion of the local superposed beam section of second is the cast-in-place district of the local superposed beam of second, the local superposed beam of second direction still includes: the bottom longitudinal steel bar of the second local superposed beam and the face longitudinal steel bar of the second local superposed beam are arranged in the second superposed main body, the other end of the bottom longitudinal steel bar of the second local superposed beam extends into the beam column node core area, one end of the face longitudinal steel bar of the second local superposed beam is arranged in the second fully-prefabricated beam section, and the other end of the face longitudinal steel bar of the second local superposed beam extends into the cast-in-place area of the second local superposed beam;
and the beam-column joint core area, the first local superposed beam cast-in-place area and the second local superposed beam cast-in-place area jointly form a beam-column joint connection area.
Preferably, the first local superposed beam bottom longitudinal steel bar and the lower column longitudinal steel bar are arranged in a staggered mode, the second local superposed beam bottom longitudinal steel bar and the lower column longitudinal steel bar are arranged in a staggered mode, and the first local superposed beam bottom longitudinal steel bar and the second local superposed beam bottom longitudinal steel bar in the beam column node core area are arranged in a staggered mode in the prefabricated lower column height direction.
Preferably, a prefabricated lower column field stirrup is arranged in the beam column joint core area.
Preferably, the first-direction partially-laminated beam further comprises a first laminated beam section stirrup, and the first laminated beam section stirrup is located in the first partially-laminated beam cast-in-place area and arranged around a longitudinal steel bar at the bottom of the first partially-laminated beam; the second-direction local superposed beam further comprises a second superposed beam section stirrup, and the second superposed beam section stirrup is located in the second local superposed beam cast-in-place area and surrounds the second local superposed beam bottom longitudinal steel bar.
Preferably, a longitudinal direction of the first-direction partially-overlapped beam is perpendicular to a longitudinal direction of the second-direction partially-overlapped beam.
Preferably, the number of the first-direction local superposed beams is two, the two first-direction local superposed beams are arranged along the same linear direction, the two first-direction local superposed beams are respectively arranged on two sides of the prefabricated lower column, the local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure further comprises a first connecting longitudinal bar, one end of the first connecting longitudinal bar is connected with the first local superposed beam face longitudinal reinforcing steel bar in one first-direction local superposed beam, and the other end of the first connecting longitudinal bar is connected with the first local superposed beam face longitudinal reinforcing steel bar in the other first-direction local superposed beam; the number of the second-direction local superposed beams is two, the two second-direction local superposed beams are arranged along the same straight line direction, the two second-direction local superposed beams are respectively arranged on two sides of the prefabricated lower column, the local superposed beams and the prefabricated column node reinforcing steel bar staggered connection structure further comprises a second connection longitudinal rib, one end of the second connection longitudinal rib is connected with one second-direction local superposed beam face longitudinal reinforcing steel bar in the second-direction local superposed beam, and the other end of the second connection longitudinal rib is connected with the other second-direction local superposed beam face longitudinal reinforcing steel bar in the second-direction local superposed beam.
Preferably, the structure for connecting the local superposed beams and the prefabricated column node steel bars in a staggered manner further comprises a prefabricated upper column, wherein the prefabricated upper column comprises an upper column main body and an upper column connecting piece connected with the upper column main body.
Preferably, high-performance concrete is poured in the beam-column joint connection area in a cast-in-place mode to form the beam-column joint connection part, and the high-performance concrete is one or a combination of more of ultrahigh-performance concrete, steel fiber concrete, reactive powder concrete and ECC.
The invention also provides a construction method of the local superposed beam and precast column joint reinforcing steel bar staggered connection structure, which comprises the following steps:
s1, manufacturing a prefabricated part: prefabricating the prefabricated lower column, the first-direction partially-overlapped beam, the second-direction partially-overlapped beam and the prefabricated upper column according to design requirements;
s2, hoisting the prefabricated lower column: hoisting the prefabricated lower column to a designed position by using a lifting appliance, and installing the prefabricated lower column;
s3, hoisting the first-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the first local superposed beam extend into a beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s4, hoisting the second-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the second local superposed beam extend into the beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s5, connecting longitudinal bars in site construction: respectively placing the first connecting longitudinal bar and the second connecting longitudinal bar which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar and the longitudinal bar on the first partially-overlapped beam face part, and binding and lapping the second connecting longitudinal bar and the longitudinal bar on the second partially-overlapped beam face part;
s6, pouring a beam column joint connection area: installing a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that no error exists, and vibrating and maintaining;
s7, mounting a prefabricated upper column: the lower column longitudinal steel bars are subjected to position correction, the upper column connecting pieces are sleeves arranged at the bottoms of the upper column main bodies, and the sleeves are installed after being aligned with the lower column longitudinal steel bars, the prefabricated upper columns are arranged, and the sleeves are connected in a grouting mode after column supporting is arranged.
The invention also provides another construction method of the local superposed beam and precast column joint reinforcing steel bar staggered connection structure, which comprises the following steps:
s1, manufacturing a prefabricated part: prefabricating the prefabricated lower column, the first-direction partially-overlapped beam, the second-direction partially-overlapped beam and the prefabricated upper column according to design requirements;
s2, hoisting the prefabricated lower column: hoisting the prefabricated lower column to a designed position by using a lifting appliance, and installing the prefabricated lower column;
s3, hoisting the first-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the first local superposed beam extend into a beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s4, hoisting the second-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the second local superposed beam extend into the beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s5, connecting longitudinal bars in site construction: respectively placing the first connecting longitudinal bar and the second connecting longitudinal bar which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar and the longitudinal bar on the first partially-overlapped beam face part, and binding and lapping the second connecting longitudinal bar and the longitudinal bar on the second partially-overlapped beam face part;
s6, mounting the prefabricated upper column: the upper column connecting piece is an upper column longitudinal steel bar, one end of the upper column longitudinal steel bar is positioned in the upper column main body, the other end of the upper column connecting piece extends into the beam column joint core area, and after the upper column longitudinal steel bar and the lower column longitudinal steel bar are arranged in a staggered mode, the prefabricated upper column is installed and a column support is arranged;
s7, pouring the beam-column joint connection area: and (4) mounting a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that no error exists, and vibrating and maintaining.
(III) advantageous effects
Compared with the prior art, the local superposed beam and precast column node steel bar staggered connection structure has the beneficial effects that:
according to the invention, the beam end is partially arranged into the superposed beam, the connecting longitudinal bar is additionally arranged, and then the binding and lap joint are respectively carried out with the gluten of the partially superposed beam, so that the on-site reinforcement operation and the concrete pouring amount are reduced by adopting the connecting mode; meanwhile, high-performance concrete is poured behind the beam-column joint connection area, and the seismic performance of the joint is enhanced.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic overall structure diagram of a staggered connection structure of a local superposed beam and a prefabricated column joint reinforcing steel bar according to an embodiment of the invention;
fig. 2 is a first schematic view of installation of a prefabricated lower column, a first-direction local superposed beam and a second-direction local superposed beam in the construction method of the local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure according to the embodiment of the invention;
fig. 3 is a second schematic view of installation of a prefabricated lower column, a first-direction local superposed beam and a second-direction local superposed beam in the construction method of the local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure according to the embodiment of the invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
fig. 5 is a schematic drawing illustrating pouring of a prefabricated lower column, a first-direction local superposed beam and a second-direction local superposed beam in the construction method of the local superposed beam and prefabricated column joint reinforcing steel bar staggered connection structure according to the embodiment of the invention.
Description of reference numerals:
01. a beam-column joint core area, 02, a first partially-laminated beam cast-in-place area, 03, a second partially-laminated beam cast-in-place area, 1, a first-direction partially-laminated beam, 2, a second-direction partially-laminated beam, 3, a prefabricated lower-column field stirrup, 4, a first connecting longitudinal rib, 5, a second connecting longitudinal rib, 6, a prefabricated upper column, 7, a prefabricated lower column, 8, a beam-column joint connection, 11, a first fully-prefabricated beam section, 12, a first partially-laminated beam section, 13, a first partially-laminated beam bottom longitudinal reinforcement, 14, a first partially-laminated beam face longitudinal reinforcement, 15, a first laminated beam section stirrup, 21, a second fully-prefabricated beam section, 22, a second partially-laminated beam section, 23, a second partially-laminated beam bottom longitudinal reinforcement, 24, a second partially-laminated beam face longitudinal reinforcement, 25, a second laminated beam section stirrup, 61, an upper-column main body, 62, an upper-column connecting piece, 71, a lower-column main body, 72. and (5) longitudinal steel bars of the lower column.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The structure of the partially overlapped beam and the prefabricated column joint reinforcing steel bars in the staggered connection and the construction method of the invention are further explained with reference to the attached drawings 1-5.
Example 1
Please refer to fig. 2-4, a structure for connecting a partially-laminated beam and a prefabricated column node steel bar in a staggered manner, which comprises a prefabricated lower column 7, a first-direction partially-laminated beam 1 and a second-direction partially-laminated beam 2, wherein the prefabricated lower column 7 is respectively prefabricated by reinforced concrete, the prefabricated lower column 7 comprises a lower column main body 71 and a lower column longitudinal steel bar 72, a beam column node core area 01 is arranged right above the lower column main body 71, one end of the lower column longitudinal steel bar 72 is positioned in the lower column main body 71, and the other end of the lower column longitudinal steel bar 72 extends into the beam column node core area 01; local superposed beam 1 of first direction includes first coincide main part, and first coincide main part includes first whole precast beam section 11 and locates first whole precast beam section 11 and be close to the first local superposed beam section 12 of 01 one end of beam column node core area, and the upper portion of first local superposed beam section 12 is the cast-in-place district 02 of first local superposed beam, and the local superposed beam 1 of first direction still includes: the first partially-laminated beam comprises a first partially-laminated beam bottom longitudinal steel bar 13 and a first partially-laminated beam face longitudinal steel bar 14, wherein one end of the first partially-laminated beam bottom longitudinal steel bar 13 is arranged in a first laminated main body, the other end of the first partially-laminated beam bottom longitudinal steel bar 13 extends into a beam-column node core area 01, one end of the first partially-laminated beam face longitudinal steel bar 14 is arranged in a first fully-prefabricated beam section 11, and the other end of the first partially-laminated beam face longitudinal steel bar 14 extends into a first partially-laminated beam cast-in-place area 02; local superposed beam 2 of second direction includes the second coincide main part, and the second coincide main part includes the whole precast beam section 21 of second and locates the whole precast beam section 21 of second and be close to the local superposed beam section 22 of second of 01 one end of beam column node core area, and the upper portion of the local superposed beam section 22 of second is the cast-in-place district 03 of the local superposed beam of second, and the local superposed beam 2 of second direction still includes: the bottom longitudinal steel bars 23 of the second local superposed beams and the face longitudinal steel bars 24 of the second local superposed beams, one ends of the bottom longitudinal steel bars 23 of the second local superposed beams are arranged in the second superposed main body, the other ends of the bottom longitudinal steel bars 23 of the second local superposed beams extend into the beam column node core area 01, one ends of the bottom longitudinal steel bars 24 of the face longitudinal steel bars of the second local superposed beams are arranged in the second fully-prefabricated beam section 21, and the other ends of the bottom longitudinal steel bars 24 of the face longitudinal steel bars of the second local superposed beams extend into the cast-in-place area 03 of the second local superposed beams; the beam-column joint core area 01, the first local superposed beam cast-in-place area 02 and the second local superposed beam cast-in-place area 03 jointly form a beam-column joint connection area.
Please refer to fig. 4, more specifically, the number of the first-direction partially-overlapped beams 1 is two, the two first-direction partially-overlapped beams 1 are arranged along the same straight line direction, and the two first-direction partially-overlapped beams 1 are respectively arranged at two sides of the prefabricated lower column 7, the partially-overlapped beam and prefabricated column node steel bar staggered connection structure further includes a first connecting longitudinal bar 4, one end of the first connecting longitudinal bar 4 is connected with the first partially-overlapped beam face longitudinal steel bar 14 in one first-direction partially-overlapped beam 1, and the other end of the first connecting longitudinal bar 4 is connected with the first partially-overlapped beam face longitudinal steel bar 14 in the other first-direction partially-overlapped beam 1; the number of the second-direction local superposed beams 2 is two, the two second-direction local superposed beams 2 are arranged along the same straight line direction, the two second-direction local superposed beams 2 are respectively arranged at two sides of the prefabricated lower column 7, the local superposed beam and prefabricated column node steel bar staggered connection structure further comprises a second connection longitudinal bar 5, one end of the second connection longitudinal bar 5 is connected with a second local superposed beam face longitudinal steel bar 24 in one second-direction local superposed beam 2, and the other end of the second connection longitudinal bar 5 is connected with a second local superposed beam face longitudinal steel bar 24 in the other second-direction local superposed beam 2.
In the joint reinforcing steel bar dislocation connecting structure of the local superposed beam and the precast column, the local superposed beam (comprising a first-direction local superposed beam 1 and a second-direction local superposed beam 2) is arranged in a superposed beam form at the beam end, and the rest beam sections are fully precast beams; the bottom ribs of the partially-overlapped beam (the longitudinal reinforcing steel bars 13 at the bottom of the first partially-overlapped beam and the longitudinal reinforcing steel bars 23 at the bottom of the second partially-overlapped beam) extend into the core area 01 of the beam-column joint; local superposed beam gluten (first local superposed beam face longitudinal reinforcement 14 and second local superposed beam face longitudinal reinforcement 24) extends to the beam-ends, and after the local superposed beams at two ends of the lower prefabricated column 7 are hoisted, the on-site additional local superposed beam connecting longitudinal ribs (first connecting longitudinal rib 4 and second connecting longitudinal rib 5) are respectively bound and lapped with the local superposed beam gluten at two ends of the lower prefabricated column 7. And finally, pouring high-performance concrete and other composite materials to realize high-strength connection of the local superposed beam and the prefabricated column.
According to the invention, the beam end is partially arranged into the superposed beam, and the additional connecting longitudinal bars are respectively bound and overlapped with the gluten of the partially superposed beam, so that the reinforcement operation and the concrete pouring amount on the construction site are greatly reduced, and the construction efficiency of the fabricated building is improved; meanwhile, high-performance concrete is poured behind the beam-column joint connection area, the anti-seismic performance of the beam-column joint is improved, and the joint pouring quality is guaranteed.
According to the specific embodiment of the invention, the first partially-laminated beam bottom longitudinal steel bar 13 and the lower column longitudinal steel bar 72 are arranged in a staggered manner, the second partially-laminated beam bottom longitudinal steel bar 23 and the lower column longitudinal steel bar 72 are arranged in a staggered manner, and the first partially-laminated beam bottom longitudinal steel bar 13 and the second partially-laminated beam bottom longitudinal steel bar 23 which extend into the beam-column joint core area 01 in the height direction of the prefabricated lower column 7 are arranged in a staggered manner. In this embodiment, adopt this structure to realize that the reinforcing bar dodges.
According to the specific implementation mode of the invention, a prefabricated lower column field stirrup 3 is arranged in the beam column joint core area 01. More specifically, the prefabricated lower column field stirrup 3 is a closed stirrup or an open stirrup or a combined U-shaped stirrup.
As shown in fig. 2-4, after the construction of the precast column on-site stirrup is completed, the connecting longitudinal bars (the first connecting longitudinal bar 4 and the second connecting longitudinal bar 5) are bound and overlapped.
According to the specific embodiment of the present invention, the first-direction partially-laminated beam 1 further includes a first laminated beam section stirrup 15, and the first laminated beam section stirrup 15 is located in the first partially-laminated beam cast-in-place area 02 and is disposed around the longitudinal steel bar 13 at the bottom of the first partially-laminated beam; the second-direction local superposed beam 2 further comprises a second superposed beam section stirrup 25, and the second superposed beam section stirrup 25 is located in the second local superposed beam cast-in-place area 03 and surrounds the second local superposed beam bottom longitudinal steel bar 23. More specifically, the first composite beam section stirrup 15 is a closed stirrup or an open stirrup; the second composite beam section stirrup 25 is a closed stirrup or an open stirrup. This structure contributes to further improvement in the connection strength.
According to an embodiment of the present invention, the length direction of the first-direction partially-laminated beam 1 is perpendicular to the length direction of the second-direction partially-laminated beam 2. The structure is used for forming a vertical beam structure and meets the building requirements.
Referring to fig. 1, according to an embodiment of the present invention, the partially-laminated beam and prefabricated column node steel bar staggered connection structure further includes a prefabricated upper column 6, and the prefabricated upper column 6 includes an upper column main body 61 and an upper column connecting member 62 connected to the upper column main body 61. In this embodiment, the prefabricated upper column 6 is added to meet the requirement of column height design.
According to the specific embodiment of the invention, the beam-column node connecting part 8 is formed by pouring high-performance concrete in a beam-column node connecting area in a cast-in-place mode, wherein the high-performance concrete is one or a combination of more of ultrahigh-performance concrete, steel fiber concrete, reactive powder concrete and ECC. The material is beneficial to improving the mechanical property of the beam-column joint connecting part 8.
In the above embodiment, the first-direction partially-overlapped beam 1 and the first-direction partially-overlapped beam 1 are both partially-overlapped beams, the longitudinal steel bars at the bottom of the partially-overlapped beam extend out of the beam end and extend into the beam-column node core area 01, and the extending length is the anchoring length of the longitudinal bottom steel bars; the vertical reinforcing steel bars of the local superposed beam surface part extend out of the full prefabricated section and extend into the superposed beam section, and the extending length is the longitudinal gluten overlapping length. The length of the overlapped beam section of the partial overlapped beam is larger than the length of the lap joint of the longitudinal gluten of the partial overlapped beam. The stirrups of the superposed beam sections of the partially superposed beams extend into the beam-column joint connection area.
Example 2
The invention also discloses a construction method of the local superposed beam and precast column node steel bar staggered connection structure, which is the local superposed beam and precast column node steel bar staggered connection structure pointed in the embodiment 1, and the construction method comprises the following steps:
s1, manufacturing a prefabricated part: and prefabricating the lower prefabricated column 7, the first-direction partially-superposed beam 1, the second-direction partially-superposed beam 2 and the upper prefabricated column 6 according to design requirements.
S2, hoisting the prefabricated lower column 7: and hoisting the prefabricated lower column 7 to a designed position by using a lifting appliance, and installing the prefabricated lower column 7.
During specific implementation, before the lower column 7 is prefabricated by hoisting, the specific position of the component needs to be determined by measuring and paying off, the position of the longitudinal steel bar 72 of the lower column is corrected, and leveling is performed by using a steel gasket. Before the prefabricated lower column 7 is installed, the steel bars need to be well aligned.
S3, hoisting the first-direction partially-overlapped beam 1: and measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam 1 to a corresponding position, leveling, and enabling the longitudinal steel bars 13 at the bottom of the first local superposed beam to extend into the beam-column joint core area 01 and to be arranged in a staggered manner with the longitudinal steel bars 72 of the lower column.
S4, hoisting the second-direction partially-overlapped beam 2: and (3) measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam 2 in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars 23 at the bottom of the second local superposed beam extend into the beam-column joint core area 01 and are arranged in a staggered manner with the longitudinal steel bars 72 of the lower column.
In specific implementation, the second partially-laminated beam bottom longitudinal reinforcement 23 is located on the upper portion of the first partially-laminated beam bottom longitudinal reinforcement 13.
S5, connecting longitudinal bars in site construction: and respectively putting the first connecting longitudinal bar 4 and the second connecting longitudinal bar 5 which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar 4 and the first partially-laminated beam face longitudinal bar 14, and binding and lapping the second connecting longitudinal bar 5 and the second partially-laminated beam face longitudinal bar 24.
S6, pouring a beam column joint connection area: and (4) mounting a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that the precast column post-cast section template and the local superposed beam edge sealing template are correct, and vibrating and maintaining.
S7, mounting a prefabricated upper column 6: the position of the lower column longitudinal steel bar 72 is corrected, the upper column connecting piece is a sleeve arranged at the bottom of the upper column main body 61, the prefabricated upper column 6 is installed after the sleeve and the lower column longitudinal steel bar 72 are aligned, and the sleeve is connected in a grouting mode after column support is arranged. In this embodiment, the prefabricated upper column 6 and the prefabricated lower column 7 are connected by grouting sleeves.
Example 3
The invention also discloses a construction method of the local superposed beam and precast column node steel bar staggered connection structure, which is the local superposed beam and precast column node steel bar staggered connection structure pointed in the embodiment 1, and the construction method comprises the following steps:
s1, manufacturing a prefabricated part: and prefabricating the lower prefabricated column 7, the first-direction partially-superposed beam 1, the second-direction partially-superposed beam 2 and the upper prefabricated column 6 according to design requirements.
S2, hoisting the prefabricated lower column 7: and hoisting the prefabricated lower column 7 to a designed position by using a lifting appliance, and installing the prefabricated lower column 7.
S3, hoisting the first-direction partially-overlapped beam 1: and measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam 1 to a corresponding position, leveling, and enabling the longitudinal steel bars 13 at the bottom of the first local superposed beam to extend into the beam-column joint core area 01 and to be arranged in a staggered manner with the longitudinal steel bars 72 of the lower column.
S4, hoisting the second-direction partially-overlapped beam 2: and (3) measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam 2 in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars 23 at the bottom of the second local superposed beam extend into the beam-column joint core area 01 and are arranged in a staggered manner with the longitudinal steel bars 72 of the lower column.
S5, connecting longitudinal bars in site construction: and respectively putting the first connecting longitudinal bar 4 and the second connecting longitudinal bar 5 which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar 4 and the first partially-laminated beam face longitudinal bar 14, and binding and lapping the second connecting longitudinal bar 5 and the second partially-laminated beam face longitudinal bar 24.
S6, mounting the prefabricated upper column 6: go up post connecting piece 62 and be the vertical reinforcing bar of upper prop, the one end of the vertical reinforcing bar of upper prop is located upper prop main part 61, and the other end of going up post connecting piece 62 stretches into beam column node core area 01, with the vertical reinforcing bar of upper prop and the vertical reinforcing bar 72 mutual dislocation set back of lower prop, the installation is prefabricated on the post 6 and is set up the post support.
S7, pouring the beam-column joint connection area: and (4) mounting a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that no error exists, and vibrating and maintaining.
In this embodiment, adopt the lapped connection form of longitudinal reinforcement dislocation between the prefabricated upper prop 6 and the prefabricated lower prop 7, adopt this structure, the length that lower prop longitudinal reinforcement 72 and upper prop longitudinal reinforcement stretched into beam column node core area 01 need satisfy the requirement of lap joint length.
It should be noted that: example 2 is substantially the same as example 3 except that steps S6-S7 are different.
In example 2, a connection form of sleeve grouting is adopted between the prefabricated upper column 6 and the prefabricated lower column 7. In example 3, the prefabricated upper column 6 and the prefabricated lower column 7 are connected in a mode of overlapping longitudinal steel bars in a staggered mode.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The structure is characterized by comprising a prefabricated lower column, a first-direction local superposed beam and a second-direction local superposed beam which are respectively prefabricated by reinforced concrete, wherein the prefabricated lower column comprises a lower column main body and lower column longitudinal steel bars, a beam column joint core area is arranged right above the lower column main body, one end of each lower column longitudinal steel bar is positioned in the lower column main body, and the other end of each lower column longitudinal steel bar extends into the beam column joint core area;
the local superposed beam of first direction includes first coincide main part, first coincide main part includes first full precast beam section and locates first full precast beam section is close to the first local superposed beam section of beam column node core area one end, the upper portion of first local superposed beam section is the cast-in-place district of first local superposed beam, the local superposed beam of first direction still includes: the first partially-laminated beam bottom longitudinal steel bar and the first partially-laminated beam face longitudinal steel bar are arranged in the first laminated main body, one end of the first partially-laminated beam bottom longitudinal steel bar extends into the beam-column joint core area, one end of the first partially-laminated beam face longitudinal steel bar is arranged in the first fully-prefabricated beam section, and the other end of the first partially-laminated beam face longitudinal steel bar extends into the first partially-laminated beam cast-in-place area;
the local superposed beam of second direction includes the second coincide main part, the second coincide main part includes the whole precast beam section of second and locates the whole precast beam section of second is close to the local superposed beam section of second of beam column node core area one end, the upper portion of the local superposed beam section of second is the cast-in-place district of the local superposed beam of second, the local superposed beam of second direction still includes: the bottom longitudinal steel bar of the second local superposed beam and the face longitudinal steel bar of the second local superposed beam are arranged in the second superposed main body, the other end of the bottom longitudinal steel bar of the second local superposed beam extends into the beam column node core area, one end of the face longitudinal steel bar of the second local superposed beam is arranged in the second fully-prefabricated beam section, and the other end of the face longitudinal steel bar of the second local superposed beam extends into the cast-in-place area of the second local superposed beam;
and the beam-column joint core area, the first local superposed beam cast-in-place area and the second local superposed beam cast-in-place area jointly form a beam-column joint connection area.
2. The structure of claim 1, wherein the first partially-laminated beam bottom longitudinal reinforcement and the lower column longitudinal reinforcement are arranged in a staggered manner, the second partially-laminated beam bottom longitudinal reinforcement and the lower column longitudinal reinforcement are arranged in a staggered manner, and the first partially-laminated beam bottom longitudinal reinforcement and the second partially-laminated beam bottom longitudinal reinforcement extending into the beam-column joint core region in the height direction of the prefabricated lower column are arranged in a staggered manner.
3. The partially-laminated beam and precast column joint steel bar staggered connection structure according to claim 2, wherein a precast lower column field stirrup is arranged in a beam column joint core area.
4. The structure for connecting the partially-laminated beam with the precast column node steel bars in the staggered way according to claim 3, wherein the first-direction partially-laminated beam further comprises a first laminated beam section stirrup, and the first laminated beam section stirrup is positioned in the first partially-laminated beam cast-in-place area and is arranged around the longitudinal steel bars at the bottom of the first partially-laminated beam; the second-direction local superposed beam further comprises a second superposed beam section stirrup, and the second superposed beam section stirrup is located in the second local superposed beam cast-in-place area and surrounds the second local superposed beam bottom longitudinal steel bar.
5. The partially-laminated beam and precast column joint reinforcing steel bar staggered connection structure according to claim 4, wherein the length direction of the first-direction partially-laminated beam is perpendicular to the length direction of the second-direction partially-laminated beam.
6. The structure for connecting the local superposed beams and the prefabricated column node steel bars in the staggered manner according to claim 5, wherein the number of the first-direction local superposed beams is two, the two first-direction local superposed beams are arranged along the same straight line direction, the two first-direction local superposed beams are respectively arranged on two sides of the prefabricated lower column, the structure for connecting the local superposed beams and the prefabricated column node steel bars in the staggered manner further comprises first connecting longitudinal bars, one end of each first connecting longitudinal bar is connected with the longitudinal steel bar on the surface of the first local superposed beam in one first-direction local superposed beam, and the other end of each first connecting longitudinal bar is connected with the longitudinal steel bar on the surface of the first local superposed beam in the other first-direction local superposed beam; the number of the second-direction local superposed beams is two, the two second-direction local superposed beams are arranged along the same straight line direction, the two second-direction local superposed beams are respectively arranged on two sides of the prefabricated lower column, the local superposed beams and the prefabricated column node reinforcing steel bar staggered connection structure further comprises a second connection longitudinal rib, one end of the second connection longitudinal rib is connected with one second-direction local superposed beam face longitudinal reinforcing steel bar in the second-direction local superposed beam, and the other end of the second connection longitudinal rib is connected with the other second-direction local superposed beam face longitudinal reinforcing steel bar in the second-direction local superposed beam.
7. The partially-laminated beam and precast column joint reinforcing steel bar dislocation connection structure as claimed in claim 6, further comprising a precast upper column, wherein the precast upper column comprises an upper column main body and an upper column connecting member connected with the upper column main body.
8. The partially-laminated beam and precast column node steel bar staggered connection structure according to claim 7, wherein a beam-column node connection part is formed by pouring high-performance concrete in a cast-in-place mode on the beam-column node connection area, wherein the high-performance concrete is one or more of ultrahigh-performance concrete, steel fiber concrete, reactive powder concrete and ECC.
9. The construction method of the partially-overlapped beam and precast column joint reinforcing steel bar dislocation connecting structure according to claim 8, which is characterized by comprising the following steps:
s1, manufacturing a prefabricated part: prefabricating the prefabricated lower column, the first-direction partially-overlapped beam, the second-direction partially-overlapped beam and the prefabricated upper column according to design requirements;
s2, hoisting the prefabricated lower column: hoisting the prefabricated lower column to a designed position by using a lifting appliance, and installing the prefabricated lower column;
s3, hoisting the first-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the first local superposed beam extend into a beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s4, hoisting the second-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the second local superposed beam extend into the beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s5, connecting longitudinal bars in site construction: respectively placing the first connecting longitudinal bar and the second connecting longitudinal bar which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar and the longitudinal bar on the first partially-overlapped beam face part, and binding and lapping the second connecting longitudinal bar and the longitudinal bar on the second partially-overlapped beam face part;
s6, pouring a beam column joint connection area: installing a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that no error exists, and vibrating and maintaining;
s7, mounting a prefabricated upper column: the lower column longitudinal steel bars are subjected to position correction, the upper column connecting pieces are sleeves arranged at the bottoms of the upper column main bodies, and the sleeves are installed after being aligned with the lower column longitudinal steel bars, the prefabricated upper columns are arranged, and the sleeves are connected in a grouting mode after column supporting is arranged.
10. The construction method of the partially-overlapped beam and precast column joint reinforcing steel bar dislocation connecting structure according to claim 8, which is characterized by comprising the following steps:
s1, manufacturing a prefabricated part: prefabricating the prefabricated lower column, the first-direction partially-overlapped beam, the second-direction partially-overlapped beam and the prefabricated upper column according to design requirements;
s2, hoisting the prefabricated lower column: hoisting the prefabricated lower column to a designed position by using a lifting appliance, and installing the prefabricated lower column;
s3, hoisting the first-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the first-direction local superposed beam to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the first local superposed beam extend into a beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s4, hoisting the second-direction partially-overlapped beam: measuring and paying off, placing a local superposed beam support, hoisting the local superposed beam in the second direction to a corresponding position, and leveling to ensure that the longitudinal steel bars at the bottom of the second local superposed beam extend into the beam-column joint core area and are arranged in a staggered manner with the longitudinal steel bars of the lower column;
s5, connecting longitudinal bars in site construction: respectively placing the first connecting longitudinal bar and the second connecting longitudinal bar which are processed according to the design specification into the designated positions of the beam-column joint connection area, binding and lapping the first connecting longitudinal bar and the longitudinal bar on the first partially-overlapped beam face part, and binding and lapping the second connecting longitudinal bar and the longitudinal bar on the second partially-overlapped beam face part;
s6, mounting the prefabricated upper column: the upper column connecting piece is an upper column longitudinal steel bar, one end of the upper column longitudinal steel bar is positioned in the upper column main body, the other end of the upper column connecting piece extends into the beam column joint core area, and after the upper column longitudinal steel bar and the lower column longitudinal steel bar are arranged in a staggered mode, the prefabricated upper column is installed and a column support is arranged;
s7, pouring the beam-column joint connection area: and (4) mounting a precast column post-cast section template and a local superposed beam edge sealing template, pouring high-performance concrete after checking that no error exists, and vibrating and maintaining.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882510A (en) * | 2021-11-18 | 2022-01-04 | 中南大学 | Fabricated concrete structure beam column joint connection structure and construction process |
| CN115370070A (en) * | 2022-09-07 | 2022-11-22 | 华侨大学 | Prefabricated assembled concrete and square steel pipe combined column and construction method thereof |
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2021
- 2021-05-10 CN CN202110507728.3A patent/CN113638487A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882510A (en) * | 2021-11-18 | 2022-01-04 | 中南大学 | Fabricated concrete structure beam column joint connection structure and construction process |
| CN115370070A (en) * | 2022-09-07 | 2022-11-22 | 华侨大学 | Prefabricated assembled concrete and square steel pipe combined column and construction method thereof |
| CN115370070B (en) * | 2022-09-07 | 2023-08-08 | 华侨大学 | Prefabricated assembled concrete and square steel pipe combined column and construction method thereof |
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