CN117051967A - Assembly joint of assembled reinforced concrete frame structure beam and construction method - Google Patents

Assembly joint of assembled reinforced concrete frame structure beam and construction method Download PDF

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Publication number
CN117051967A
CN117051967A CN202310812062.1A CN202310812062A CN117051967A CN 117051967 A CN117051967 A CN 117051967A CN 202310812062 A CN202310812062 A CN 202310812062A CN 117051967 A CN117051967 A CN 117051967A
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CN
China
Prior art keywords
precast
column
prefabricated
assembly
steel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310812062.1A
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Chinese (zh)
Inventor
张骥
周常林
聂俊
马露
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Application filed by Huazhong University of Science and Technology filed Critical Huazhong University of Science and Technology
Priority to CN202310812062.1A priority Critical patent/CN117051967A/en
Publication of CN117051967A publication Critical patent/CN117051967A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • 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
    • 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
    • E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
    • 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
    • E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
    • E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6801—Fillings therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • 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
    • 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
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/025—Structures with concrete columns

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention discloses an assembly node of an assembled reinforced concrete frame structure beam and a construction method, which belong to the technical field of assembled buildings, wherein a precast column steel pipe and a precast column steel bar are transversely arranged at a beam column assembly node of a precast column, and the beam column assembly node is positioned at a plastic hinge; a beam column assembly node of the precast beam is transversely provided with a precast beam steel pipe and precast beam steel bars; the prefabricated column steel pipe is welded with the prefabricated beam steel pipe, and the prefabricated column steel bar is connected with the prefabricated beam steel bar sleeve in a grouting manner; transverse steel bars with hooks at the ends are arranged at beam plate assembly joints of the precast beams and beam plate assembly joints of the precast plates, and longitudinal steel bars penetrate through the hooks to anchor; concrete is poured between the inner side and the outer side of each steel pipe and between the precast beam and the precast slab, and the concrete wraps each steel bar. And the bearing capacity and the anti-seismic performance of the core area of the assembly node are ensured, and meanwhile, the rapid assembly construction of the assembly node of the assembly reinforced concrete frame structure beam is realized.

Description

Assembly joint of assembled reinforced concrete frame structure beam and construction method
Technical Field
The invention belongs to the technical field of assembly type buildings, and particularly relates to an assembly node of an assembly type reinforced concrete frame structure beam and a construction method.
Background
The traditional building construction technology has the defects of low production efficiency, low construction speed, long construction period, high material consumption, high labor intensity of workers and the like, so that the traditional building construction technology cannot meet the requirements of modern society on buildings. The assembled building has the advantages of design diversification, function modernization, manufacturing industrialization, construction assembly, time optimization and the like, and has great development prospect.
For the frame structure, the core area of the beam-column junction is the area with the most complex stress of the whole structure. The reliable quality of the core area is the basis for guaranteeing the integrity of the assembled concrete structure, and has important significance for guaranteeing the safety of the whole structural system. In order to improve the bearing capacity of the assembly node and ensure the integrity of a node core area, the node area of the existing assembly reinforced concrete structure usually adopts a post-pouring concrete mode, and longitudinal ribs are connected by grouting sleeves or slurry anchors in a lap joint mode. For example, longitudinal ribs in a cast-in-situ beam column intersection node area of the CN206873621U are connected by a threaded sleeve; one end of a precast beam longitudinal rib of the patent CN106592759A extends out from one end of the precast beam body, which is close to a precast column, and the precast column is connected with the precast beam through a plurality of stirrups and ultra-high performance concrete. In the connection mode, the post-pouring technology of the concrete in the node core area has difficult binding of the steel bars, and particularly the construction quality of the beam-column junction node core area with more steel bars is more difficult to ensure; in addition, rapid assembly cannot be achieved due to the influence of the concrete curing time of the node area.
Disclosure of Invention
Aiming at the defects and improvement demands of the prior art, the invention provides an assembly node of an assembly type reinforced concrete frame structure beam and a construction method thereof, and aims to realize rapid assembly and construction of the assembly node of the assembly type reinforced concrete frame structure beam while ensuring the bearing capacity and the anti-seismic performance of a core area of the assembly node.
In order to achieve the above object, according to one aspect of the present invention, there is provided an assembly node for an assembled reinforced concrete frame structural beam, comprising a precast column, a precast beam, and a precast slab; a beam column assembly node of the prefabricated column is transversely provided with a prefabricated column steel pipe and a prefabricated column steel bar, and the beam column assembly node is positioned at a plastic hinge; a precast beam steel pipe and precast beam steel bars are transversely arranged at beam column assembly joints of the precast beam; the precast column steel pipe is welded with the precast beam steel pipe, and the precast column steel bar is connected with the precast beam steel bar sleeve in a grouting manner; transverse steel bars with hooks at the ends are arranged at beam plate assembly joints of the precast beams and beam plate assembly joints of the precast plates, and longitudinal steel bars penetrate through the hooks to anchor; the precast column steel pipe with the inboard of precast beam steel pipe and outside all cast in situ concrete, the precast beam with cast in situ concrete between the prefabricated plate, and cast in situ concrete parcel precast column reinforcing bar precast beam reinforcing bar transverse reinforcement with longitudinal reinforcement.
Furthermore, a plurality of lug plates are arranged at the outer side of the welded joint of the precast beam steel pipe or the precast column steel pipe, and the precast beam steel pipe and the precast column steel pipe are in reinforced connection through the lug plates.
Still further, the number of the ear plates is 4, and the positions of the ear plates and the positions of the prefabricated column reinforcements are staggered from each other.
Further, high-strength grouting material molds are arranged outside the precast column steel bars and the precast beam steel bars, and grouting holes and slurry discharging holes are formed in the side surfaces of the high-strength grouting material molds; and high-strength grouting material is injected into the grouting holes so as to connect the precast column steel bars and the precast beam steel bars.
Further, the inner side of the high-strength grouting material mould is a rough surface.
According to another aspect of the present invention, there is provided a construction method of an assembly node of an assembled reinforced concrete frame structure beam as described above, comprising: s1, hoisting and positioning a prefabricated column, a prefabricated beam and a prefabricated plate; s2, arranging an adjustable lateral support unit and a horizontal support unit; the horizontal supporting unit consists of a plurality of upper hanging floor steel beams and is used for horizontally connecting each precast slab so as to support the precast slabs; s3, under the external support, welding the precast column steel pipes and the precast beam steel pipes, performing sleeve grouting connection on precast column steel bars and precast beam steel bars, and performing anchoring connection on the precast beams and the precast slabs; s4, pouring concrete to the inner side and the outer side of the precast column steel pipe and the precast beam steel pipe, installing a template between the precast beam and the precast slab and pouring concrete to form a beam column slab frame; and S5, curing the concrete, and constructing an upper precast beam column plate frame on the current beam column plate frame in the early age of the concrete after the concrete is finally cured.
Still further, if the current layer prefabricated Liang Zhuban frame exists in the lower layer prefabricated beam column plate frame, the S3 further includes: connecting the current layer of prefabricated column with the lower layer of prefabricated column; the steps between S3 and S4 include: installing node shaping templates in outer side mounting columns of the current layer of prefabricated columns and the lower layer of prefabricated columns; the S4 further includes: and pouring concrete into the node setting templates, the current layer of prefabricated column steel pipes and the lower layer of prefabricated column steel pipes in the column assembly.
Still further, the column assembly node shaping template comprises: the steel plate, the transverse reinforced back ridge, the longitudinal reinforced back ridge and the split bolt in the shaping template; the split bolts are used for connecting the assembly node shaping template in the column, and the steel plates in the shaping template, the transverse reinforced back ribs and the longitudinal reinforced back ribs are used for increasing the rigidity of the assembly node shaping template in the column.
Still further, the adjustable lateral support unit is used to transfer external loads to the prefabricated component; the adjustable lateral support unit comprises: an upper inclined support, a lower inclined support, an adjustable jacking and an adjustable bottoming; the upper inclined support is connected with the lower inclined support in a cross mode, the adjustable jacking is connected with one end of the upper inclined support, the adjustable jacking is connected with one end of the lower inclined support, and the other end of the upper inclined support and the other end of the lower inclined support are used for being supported on the side face of the prefabricated component.
Further, the early age range is 1-3 days after concrete placement.
In general, through the above technical solutions conceived by the present invention, the following beneficial effects can be obtained:
(1) The beam assembly node of the fabricated reinforced concrete frame structure is arranged in a plastic hinge area of a frame beam, and the anti-seismic performance of the fabricated reinforced concrete frame structure is improved by utilizing a plastic hinge active control technology; in addition, the beam column assembly nodes are arranged in the areas outside the beam column intersection nodes, so that the problems that the binding of the steel bars is difficult and the construction quality is difficult to guarantee due to too many steel bars in the beam column intersection nodes are solved;
(2) The beam slab assembly node is anchored with the longitudinal steel bars through the transverse steel bar hooks by arranging the steel tube concrete in the core of the section of the beam column assembly node, so that the integrity of the node is greatly improved, the bearing capacity of the core area of the node is ensured, and the bearing capacity of the section shaft pressure, bending resistance and shearing resistance of the node can more easily meet the bearing requirement under the working condition of early-age construction; thereby reducing the construction waiting time, greatly shortening the construction period and realizing quick assembly;
(3) The construction method of the assembly node of the assembled reinforced concrete frame structure beam is provided, and the upper layer construction is carried out in the early age period of the concrete, so that the concrete poured on the inner side of the steel pipe is stressed in the early age period; under the constraint effect of the shaping template and the steel pipe, the concrete particles are more compact, the solubility of cement is increased, and the hydration reaction of the concrete is increased, so that the concrete has higher later bearing capacity and is more beneficial to the long-term bearing capacity of the assembly node; the longitudinal steel bars in the assembly node area are all penetrated, and the upper steel tube concrete and the lower steel tube concrete are cast in situ together, so that the integrity and the bearing performance of the assembly node are further improved;
(4) A set of integral supporting system is developed, the supporting system fully utilizes the bearing capacity of the prefabricated part, the self weight of the floor slab is transferred to the prefabricated beam through the upper hanging floor slab steel beam, and is transferred downwards to the frame column through the adjustable lateral supporting unit, a temporary supporting space system under the assembly type construction working condition is established, the force transfer path is clear, and the integral stability of the structure under the construction state can be enhanced.
Drawings
Fig. 1 is a schematic structural view of an assembly node of an assembled reinforced concrete frame structural beam according to an embodiment of the present invention;
fig. 2 is a side view of an assembled reinforced concrete frame structural beam assembly node provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a beam-column assembly node in an assembled reinforced concrete frame structure beam assembly node provided by an embodiment of the present invention;
fig. 4 is a vertical system diagram of an integral support of an assembly node of an assembly type reinforced concrete frame structure beam provided by an embodiment of the invention;
fig. 5 is a horizontal system diagram of the overall support of the beam assembly node of the fabricated reinforced concrete frame structure according to the embodiment of the present invention;
fig. 6 is a detailed view of a post assembly node shaping template of an assembly node of an assembly reinforced concrete frame structure beam provided by an embodiment of the invention;
fig. 7 is a top view of a beam-slab assembly joint in an assembled reinforced concrete frame structure beam assembly joint according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of a beam-slab assembly node in an assembled reinforced concrete frame structure beam assembly node according to an embodiment of the present invention.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
1 is a prefabricated column, 2 is a prefabricated beam, 3 is a prefabricated plate, 4 is a prefabricated beam reinforcing steel bar, 5 is a high-strength grouting material mould, 6 is a high-strength grouting material, 7 is a prefabricated beam steel pipe, 8 is an ear plate, 9 is steel pipe inner side concrete, 10 is steel pipe outer side concrete, 11 is a longitudinal reinforcing steel bar, 12 is a transverse reinforcing steel bar, 13 is beam-plate inter-concrete, 14 is an upper hanging floor slab steel beam, 15 is a floor slab assembly hidden beam node, 16 is a beam assembly node, 17 is an adjustable lateral support unit, 18 is a column assembly node shaping template, 19 is a shaping template inner steel plate, 20 is a split bolt, 21 is a transverse reinforcement back ridge, and 22 is a longitudinal reinforcement back ridge.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the present invention, the terms "first," "second," and the like in the description and in the drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
Fig. 1 is a schematic structural view of an assembly node of an assembled reinforced concrete frame structure beam according to an embodiment of the present invention. Referring to fig. 1, with reference to fig. 2 to 8, a detailed description will be given of an assembly node and a construction method for assembling a reinforced concrete frame structure beam in this embodiment.
The assembly node of the assembled reinforced concrete frame structure beam comprises a prefabricated column, a prefabricated beam and a prefabricated plate. And a beam column assembly node of the prefabricated column is transversely provided with a prefabricated column steel pipe and prefabricated column steel bars, and the beam column assembly node is positioned at the plastic hinge. And a precast beam steel pipe and precast beam steel bars are transversely arranged at the beam column assembly joint of the precast beam. The precast column steel pipe is welded with the precast beam steel pipe, and precast column steel bars are connected with precast beam steel bar sleeves in a grouting mode, as shown in figure 1. Plastic hinge means that when a structural member is stressed, the fibers on opposite sides of a section are allowed to yield but not break, and the section is considered to be a plastic hinge.
Transverse reinforcing steel bars with hooks at the ends are arranged at beam plate assembly joints of the precast beams and beam plate assembly joints of the precast slabs, and longitudinal reinforcing steel bars penetrate through the hooks to anchor, as shown in fig. 7 and 8.
Cast-in-place concrete is cast on the inner side and the outer side of the precast column steel pipe and the precast beam steel pipe, cast-in-place concrete is cast between the precast beam and the precast slab, and the cast-in-place concrete wraps the precast column steel bars, the precast beam steel bars, the transverse steel bars and the longitudinal steel bars, as shown in fig. 4 and 5.
In this embodiment, the sizes and the numbers of the illustrated reinforcing steel bars and the steel pipes are only schematic, and the specific sizes and the specific numbers need to be calculated by structural design according to actual situations. Referring to fig. 2 and 3, for the precast beam and the precast column at the beam column assembly node, the upper side of the neutralization shaft is an upper side reinforcing bar, and the lower side of the neutralization shaft is a lower side reinforcing bar. The positions and the numbers of the steel bars and the steel pipes can be reasonably arranged and configured according to structural reinforcement calculation.
The outer side position of the welded joint of the precast beam steel pipe or the precast column steel pipe is provided with a plurality of lug plates, and the precast beam steel pipe and the precast column steel pipe are in reinforced connection through the lug plates. Specifically, when the lug plate is positioned on the precast beam steel pipe, the lug plate is welded with the precast column steel pipe to realize the reinforced connection of the precast beam steel pipe and the precast column steel pipe; when the lug plate is positioned on the precast column steel pipe, the lug plate is welded with the precast beam steel pipe to realize the reinforced connection of the precast beam steel pipe and the precast column steel pipe.
Preferably, the number of the lug plates is 4, and the positions of the lug plates and the positions of the precast column reinforcements are staggered from each other, that is, also staggered from the positions of the precast beam reinforcements, so as to facilitate welding.
The outer parts of the prefabricated column steel bars and the prefabricated beam steel bars are provided with high-strength grouting material dies, and the side surfaces of the high-strength grouting material dies are provided with grouting holes and slurry discharging holes. High-strength grouting material is injected into the grouting holes so as to connect the precast column steel bars and the precast beam steel bars. Preferably, the inner side of the high-strength grouting material mould is a rough surface.
Referring to fig. 4, if the prefabricated column is not a base prefabricated column, the current layer prefabricated column is connected with the lower layer prefabricated column. On the vertical direction, the precast column includes the steel pipe and surrounds the reinforcing bar in the steel pipe outside, and the steel pipe welded connection of the precast column of current layer and the steel pipe welded connection of the precast column of lower floor, the reinforcing bar of the precast column of current layer and the reinforcing bar one-to-one of precast column of lower floor pass through otic placode reinforcement between the steel pipe and connect, connect through high strength grouting material 6 between the reinforcing bar, and the steel pipe is inboard, the equal cast in situ concrete in outside, and the concrete parcel steel bar. The welding point of the current layer prefabricated column and the lower layer prefabricated column is positioned at the middle part of the column with smaller stress.
The embodiment of the invention also provides a construction method of the assembly node of the assembled reinforced concrete frame structure beam shown in the figures 1-8, which comprises the operations S1-S5.
And S1, hoisting and positioning the prefabricated column, the prefabricated beam and the prefabricated plate.
And constructing and transporting the prefabricated column 1, the prefabricated beam 2, the prefabricated plate 3 and the like required by assembly, and hoisting and positioning. The beam slab assembly joints of the precast beam 2 and the precast slab 3 are respectively provided with precast transverse steel bars 12. The concrete includes steel pipe inner side concrete 9 poured inside each steel pipe, steel pipe outer side concrete 10 poured outside each steel pipe, and beam-slab-to-beam concrete 13.
The high-strength grouting material mold 5 is arranged on the precast column steel bars and the precast beam steel bars, and the lug plates 8 are arranged on the precast column steel pipes or the precast beam steel pipes 7. Transverse steel bars of the precast beams and precast slabs are staggered at intervals to form a floor slab assembly hidden beam node 15, and beam assembly nodes 16 are arranged on the precast beams.
In operation S2, the adjustable lateral support unit 17 and the horizontal support unit are arranged.
The horizontal supporting unit is composed of a plurality of upper hanging floor steel beams 14 as an overall supporting horizontal system for horizontally connecting each prefabricated panel to support the prefabricated panel. The precast slab and the precast beam are connected together through the upper hanging floor slab steel beam, and the force is transmitted to the lower precast member through the vertical support.
In this embodiment, make full use of prefabrication self bearing capacity, through hanging the floor girder steel on with the floor load transfer to the precast beam to through whole vertical system of support, the transmission is given the precast column downwards, and the transmission route is clear and definite. Under the combined action of the integral support vertical system and the integral support horizontal system, based on the early-age bearing capacity of the frame column assembly node, a temporary support space system under the working condition of early-age assembly type construction is established, and the integral stability of the structure in the construction state can be enhanced. The whole design system has strong turnover of related components, is convenient for development of standardized and generalized equipment, has simple and clear force transmission path, is favorable for controlling the safety of the construction process and controls the cost.
Operation S3, under the external support, welding the precast column steel pipes and the precast beam steel pipes, performing sleeve grouting connection on the precast column steel bars and the precast beam steel bars 4, performing anchoring connection on the precast beams and precast slabs, and vertically crossing the longitudinal steel bars 11 and the transverse steel bars 12 to achieve better anchoring effect.
And S4, pouring concrete to the inner side and the outer side of the precast column steel pipe and the precast beam steel pipe, installing a template between the precast beam and the precast slab, and pouring concrete to form a beam column slab frame.
And S5, curing the concrete, and constructing the upper precast beam column plate frame on the current beam column plate frame in the early age of the concrete after the concrete is finally cured.
According to an embodiment of the present invention, if the current layer prefabricated Liang Zhuban frame exists with the lower layer prefabricated Liang Zhuban frame, operation S3 further includes: connecting the current layer of prefabricated column with the lower layer of prefabricated column; between operation S3 and operation S4, it includes: installing node shaping templates 18 in the outer side mounting columns of the current layer of prefabricated columns and the lower layer of prefabricated columns; operation S4 further comprises: and pouring concrete into the assembly node shaping templates, the steel pipes of the current layer of prefabricated columns and the steel pipes of the lower layer of prefabricated columns.
According to an embodiment of the present invention, referring to fig. 6, the in-column assembly node shaping template includes: the inner steel plate 19, the transverse reinforced back ridge 21, the longitudinal reinforced back ridge 22 and the split bolt 20 of the shaping template; the split bolts are used for connecting the assembly node shaping template in the column, and the steel plates, the transverse reinforced back edges and the longitudinal reinforced back edges in the shaping template are used for increasing the rigidity of the assembly node shaping template in the column.
According to an embodiment of the invention, the adjustable lateral support unit as a whole supports a vertical system for transferring external loads onto the prefabricated elements. The adjustable lateral support unit includes: an upper inclined support, a lower inclined support, an adjustable jacking and an adjustable bottoming; the upper inclined support is connected with the lower inclined support in a cross mode, the adjustable jacking is connected with one end of the upper inclined support, the adjustable jacking is connected with one end of the lower inclined support, and the other end of the upper inclined support and the other end of the lower inclined support are used for being supported on the side face of the prefabricated component.
The adjustable lateral support unit is supported on the prefabricated component and is formed by connecting steel pipes with adjustable heights, the height can be adjusted according to the layer height, the prefabricated steel pipes can be recycled by factories, and the adjustable lateral support unit is convenient to operate and suitable for different scenes.
Preferably, the early age range is 1-3 days after concrete placement.
According to the assembly node and the construction method for the assembled reinforced concrete frame structure beam, which are provided by the embodiment of the invention, the connection design of the frame node and the peripheral frame beams is improved, and the connection integrity of the assembled reinforced concrete frame structure is enhanced. The frame beam assembly node is arranged in the area beyond the beam-column intersection node, so that the goal of integral prefabrication of the beam-column intersection node and the frame column can be realized, and the frame column assembly installation efficiency is improved. Meanwhile, the plastic hinge of the frame beam is arranged in the assembly node area by utilizing the plastic hinge active control technology, and the energy consumption capacity of the assembly node of the frame beam can be flexibly designed through the plastic hinge performance design of the beam, so that the aim of the anti-seismic performance of the assembled concrete frame structure can be better met.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The assembly node for the assembled reinforced concrete frame structure beam is characterized by comprising a prefabricated column, a prefabricated beam and a prefabricated plate;
a beam column assembly node of the prefabricated column is transversely provided with a prefabricated column steel pipe and a prefabricated column steel bar, and the beam column assembly node is positioned at a plastic hinge;
a precast beam steel pipe and precast beam steel bars are transversely arranged at beam column assembly joints of the precast beam; the precast column steel pipe is welded with the precast beam steel pipe, and the precast column steel bar is connected with the precast beam steel bar sleeve in a grouting manner;
transverse steel bars with hooks at the ends are arranged at beam plate assembly joints of the precast beams and beam plate assembly joints of the precast plates, and longitudinal steel bars penetrate through the hooks to anchor;
the precast column steel pipe with the inboard of precast beam steel pipe and outside all cast in situ concrete, the precast beam with cast in situ concrete between the prefabricated plate, and cast in situ concrete parcel precast column reinforcing bar precast beam reinforcing bar transverse reinforcement with longitudinal reinforcement.
2. The fabricated reinforced concrete frame structure beam-assembling node according to claim 1, wherein a plurality of ear plates are provided at positions outside the welded joints of the precast beam steel pipes or the precast column steel pipes, and the precast beam steel pipes and the precast column steel pipes are reinforced and connected by the ear plates.
3. The fabricated reinforced concrete frame structural beam assembly node of claim 2, wherein the number of ear panels is 4 and the positions of the ear panels and the positions of the precast column bars are offset from each other.
4. The fabricated reinforced concrete frame structure beam assembly joint according to claim 1, wherein the prefabricated column steel bars and the outer parts of the prefabricated beam steel bars are provided with high-strength grouting material molds, and the sides of the high-strength grouting material molds are provided with grouting holes and grout discharging holes;
and high-strength grouting material is injected into the grouting holes so as to connect the precast column steel bars and the precast beam steel bars.
5. The fabricated reinforced concrete frame structural beam assembly joint of claim 4, wherein the inner side of the high-strength grouting material die is roughened.
6. A method of constructing a fabricated reinforced concrete frame structural beam assembly node as claimed in any one of claims 1 to 5, comprising:
s1, hoisting and positioning a prefabricated column, a prefabricated beam and a prefabricated plate;
s2, arranging an adjustable lateral support unit and a horizontal support unit; the horizontal supporting unit consists of a plurality of upper hanging floor steel beams and is used for horizontally connecting each precast slab so as to support the precast slabs;
s3, under the external support, welding the precast column steel pipes and the precast beam steel pipes, performing sleeve grouting connection on precast column steel bars and precast beam steel bars, and performing anchoring connection on the precast beams and the precast slabs;
s4, pouring concrete to the inner side and the outer side of the precast column steel pipe and the precast beam steel pipe, installing a template between the precast beam and the precast slab and pouring concrete to form a beam column slab frame;
and S5, curing the concrete, and constructing an upper precast beam column plate frame on the current beam column plate frame in the early age of the concrete after the concrete is finally cured.
7. The method of construction of claim 6, wherein if the current layer of prefabricated Liang Zhuban frames exists in the lower layer of prefabricated beam-column panel frames, S3 further comprises: connecting the current layer of prefabricated column with the lower layer of prefabricated column;
the steps between S3 and S4 include: installing node shaping templates in outer side mounting columns of the current layer of prefabricated columns and the lower layer of prefabricated columns;
the S4 further includes: and pouring concrete into the node setting templates, the current layer of prefabricated column steel pipes and the lower layer of prefabricated column steel pipes in the column assembly.
8. The method of construction according to claim 7, wherein the in-column assembly node setting template comprises: the steel plate, the transverse reinforced back ridge, the longitudinal reinforced back ridge and the split bolt in the shaping template; the split bolts are used for connecting the assembly node shaping template in the column, and the steel plates in the shaping template, the transverse reinforced back ribs and the longitudinal reinforced back ribs are used for increasing the rigidity of the assembly node shaping template in the column.
9. The construction method according to claim 6, wherein the adjustable lateral support unit is used to transmit an external load to the prefabricated element;
the adjustable lateral support unit comprises: an upper inclined support, a lower inclined support, an adjustable jacking and an adjustable bottoming; the upper inclined support is connected with the lower inclined support in a cross mode, the adjustable jacking is connected with one end of the upper inclined support, the adjustable jacking is connected with one end of the lower inclined support, and the other end of the upper inclined support and the other end of the lower inclined support are used for being supported on the side face of the prefabricated component.
10. The method of construction of claim 6, wherein the early age period is in the range of 1 to 3 days after concrete placement.
CN202310812062.1A 2023-07-04 2023-07-04 Assembly joint of assembled reinforced concrete frame structure beam and construction method Pending CN117051967A (en)

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CN202310812062.1A CN117051967A (en) 2023-07-04 2023-07-04 Assembly joint of assembled reinforced concrete frame structure beam and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310812062.1A CN117051967A (en) 2023-07-04 2023-07-04 Assembly joint of assembled reinforced concrete frame structure beam and construction method

Publications (1)

Publication Number Publication Date
CN117051967A true CN117051967A (en) 2023-11-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
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