CN111502123A - Inverted grouting type precast concrete column structure and construction method thereof - Google Patents
Inverted grouting type precast concrete column structure and construction method thereof Download PDFInfo
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- CN111502123A CN111502123A CN202010383458.5A CN202010383458A CN111502123A CN 111502123 A CN111502123 A CN 111502123A CN 202010383458 A CN202010383458 A CN 202010383458A CN 111502123 A CN111502123 A CN 111502123A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
-
- 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
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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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
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2457—Beam to beam connections
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/324—Floor structures wholly cast in situ with or without form units or reinforcements with peripheral anchors or supports
Abstract
The invention relates to an inverted grouting type precast concrete column structure, which comprises: prefabricating a formed first prefabricating section, wherein a plurality of first steel bars are pre-embedded in the first prefabricating section; a core segment prefabricated and placed on top of the first prefabricated segment; and a second prefabricated section prefabricated and placed on top of the core section; through pouring into thick liquids to the slip casting pipe in order to fill the perforating hole, and then place the prefabricated section of second in the top of core section for during the second reinforcing bar corresponds the thick liquids that insert in the perforating hole, with the first reinforcing bar of fixed connection and second reinforcing bar and form integrative concrete column structure. The invention effectively solves the problem of difficult construction of the precast concrete column, simplifies the connection process, does not need to additionally erect a temporary support, improves the construction efficiency and improves the overall stability of the concrete column.
Description
Technical Field
The invention relates to the field of building construction, in particular to a reverse-inserting grouting type precast concrete column structure and a construction method thereof.
Background
Along with the development of social modernization, the application of precast concrete structure is more extensive, but current precast concrete post often need carry out on-the-spot ligature reinforcing bar in the junctor node of upper and lower section to tie up and need build temporary support and support the precast concrete post section about the junctor in the process, the operation is comparatively complicated and the efficiency of construction is lower, and the integral stability of the concrete post of pouring formation is also relatively poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a reverse-inserting grouting type precast concrete column structure, solves the problem of difficulty in precast concrete column construction, simplifies a connection process, does not need to additionally set up temporary supports, improves construction efficiency and improves the overall stability of the precast concrete column.
The technical scheme for realizing the purpose is as follows:
the invention provides a reverse-inserting grouting type precast concrete column structure, which comprises:
prefabricating a formed first prefabricated section, wherein a plurality of first steel bars are embedded in the first prefabricated section, and part of the first steel bars protrude outwards from the top of the first prefabricated section;
the core section is prefabricated and arranged at the top of the first prefabricated section, a through hole is formed in the core section corresponding to the first steel bar, the first steel bar penetrates through the through hole and is arranged in the core section, a connecting piece is pre-embedded in the core section, part of the connecting piece protrudes outwards and is fixedly connected with the cross beam, a vertical grouting pipe for grouting slurry is pre-embedded in the core section, and the end part of the grouting pipe is correspondingly flush with the bottom surface and the top surface of the core section; and
a second prefabricated section which is prefabricated and arranged at the top of the core section, wherein a plurality of second steel bars are embedded in the second prefabricated section corresponding to the first steel bars, the second steel bars partially protrude outwards from the bottom of the second prefabricated section, and the protruding parts of the second steel bars extend into the core section through the through holes and are in butt joint with the first steel bars;
through pouring into thick liquids to the slip casting pipe in order to fill the perforating hole, and then place the prefabricated section of second in the top of core section for during the second reinforcing bar corresponds the thick liquids that insert in the perforating hole, with the first reinforcing bar of fixed connection and second reinforcing bar and form integrative concrete column structure.
The invention adopts a reverse-inserting grouting type precast concrete column structure, a first precast section, a second precast section and a core section are precast, the first precast section is fixed at a designated position, the core section is arranged at the top of the first precast section, a first reinforcing steel bar penetrates through the core section, a connecting piece in the core section is fixedly connected with a corresponding cross beam, slurry is poured through a grouting pipe to fill a through hole, the second precast section is arranged at the top of the core section, the second reinforcing steel bar is correspondingly inserted into the slurry in the through hole, the first reinforcing steel bar and the second reinforcing steel bar are fixedly connected after the slurry is condensed, so that an integrated concrete column structure is formed, the connecting piece in the precast core area is directly used for connecting with the cross beam, no reinforcing steel bar binding on site is needed, in addition, no temporary support is additionally arranged in the bottom-up splicing mode, and only slurry is used for plugging gaps among the sections during site installation, the waiting time is short, so that the construction period is shortened, the problem of difficulty in construction of the precast concrete column is solved, the connection process is simplified, a temporary support does not need to be additionally erected, the construction efficiency is improved, and the overall stability of the concrete column is improved.
The invention further improves the structure of the inverted grouting type precast concrete column, wherein the beam is a steel beam with an I-shaped section;
the connecting piece comprises a steel rib pre-embedded in the core section and an I-shaped steel which is fixed on the steel rib and partially protrudes outwards, the size of the I-shaped steel is matched with that of the steel beam, and the I-shaped steel is fixedly connected with the steel beam, so that the concrete column structure is fixedly connected with the cross beam.
The invention further improves the structure of the inverted grouting type precast concrete column, wherein a plurality of floor slab reinforcing steel bars are bound above the beam;
the core section is pre-buried with a plurality of connecting ribs corresponding to the floor slab reinforcing steel bars, the connecting ribs partially protrude outwards from the side part of the core section to be in butt joint with the floor slab reinforcing steel bars, the floor slab is formed by pouring concrete on the cross beam, and the floor slab reinforcing steel bars and the connecting ribs are both buried in the floor slab.
The invention further improves the structure of the inverted grouting type precast concrete column.
The invention further improves the structure of the inverted grouting type precast concrete column, wherein a plurality of floor slab reinforcing steel bars are bound above the beam;
a set distance is reserved between the top surface of the core section and the bottom surface of the second prefabricated section so that the floor steel bars can penetrate through the core section;
concrete is poured on the top of the cross beam to form a floor slab, and then slurry is poured on the top of the core section to fixedly connect the core section and the second prefabricated section, so that an integrated concrete column structure is formed.
The invention further improves the structure of the inverted grouting type precast concrete column, and the gap between the first precast section and the core section is filled with base slurry.
The invention further improves the structure of the inverted grouting type precast concrete column, wherein the first steel bar is in butt joint connection with the second steel bar through a sleeve, and the sleeve is pre-embedded in the core section.
The invention provides a construction method of a reverse-inserting grouting type precast concrete column structure, which comprises the following steps:
providing a prefabricated first prefabricated section, and fixing the first prefabricated section at a specified position;
providing a prefabricated core section, placing the core section on the first prefabricated section, penetrating a first steel bar into the core section through the through hole, and fixedly connecting the connecting piece with the corresponding cross beam;
and pouring slurry into the grouting pipe to fill the through hole, providing a prefabricated second prefabricated section, placing the second prefabricated section on the core section before the slurry is condensed, and correspondingly inserting the second steel bar into the slurry in the through hole, so that the first steel bar and the second steel bar are fixedly connected, and an integrated concrete column structure is formed.
The construction method of the inverted grouting type precast concrete column structure is further improved in that a plurality of floor slab reinforcing steel bars are bound above the beam, and a plurality of connecting ribs are embedded in the core section corresponding to the floor slab reinforcing steel bars;
after the core sections are installed, the connecting pieces are fixedly connected with the corresponding cross beams, the connecting ribs are in butt joint with the corresponding floor slab reinforcing steel bars, concrete is poured on the tops of the cross beams to form the floor slab, and the floor slab reinforcing steel bars and the connecting ribs are buried in the floor slab.
The construction method of the inverted grouting type precast concrete column structure is further improved in that a plurality of floor slab reinforcing steel bars are bound above the beam, and a set distance is reserved between the core section and the second precast section for the floor slab reinforcing steel bars to penetrate through;
after the core section is arranged at the top of the first prefabricated section, floor slab reinforcing steel bars are bound, a template is erected along the top edge of the core section to enclose the through hole, concrete is poured on the top of the beam outside the template to form a floor slab, the floor slab reinforcing steel bars are embedded in the floor slab, then the template is dismantled, slurry is poured on the top of the core section to fill the through hole, the second prefabricated section is arranged on the core section, the second reinforcing steel bars are correspondingly inserted into the slurry in the through hole, and the first reinforcing steel bars and the second reinforcing steel bars are fixedly connected.
Drawings
Fig. 1 is a front view of an embodiment of a structure of a reverse-grouting precast concrete column according to the present invention.
FIG. 2 is a top view of a core section in a reverse-grouting precast concrete column structure of the present invention.
Fig. 3 is a front view of another embodiment of the present invention of a reverse-grouting precast concrete column structure.
Fig. 4 is a schematic view illustrating arrangement of a formwork in another embodiment of the structure of the inverted grouting type precast concrete column according to the present invention.
Fig. 5 is a front view of a form in the inverted grouting type precast concrete column structure according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides an inverted grouting type precast concrete column structure, which is characterized in that a first precast section, a second precast section and a core section are precast, the first precast section is fixed on the ground, the core section is arranged on the top of the first precast section, a first steel bar penetrates through the core section, a connecting piece in the core section is fixedly connected with a corresponding cross beam, the second precast section is arranged on the top of the core section, and the gap among the first precast section, the second precast section and the core section is filled with concrete, so that an integrated concrete column structure is formed, the connecting piece in the precast core area is directly connected with the cross beam, no steel bar binding is needed on site, in addition, the splicing mode from bottom to top does not need to be additionally supported and temporarily, in the field installation, only the gap among the sections needs to be sealed by concrete, and the waiting time is short, the construction period is shortened, the problem of difficulty in construction of the precast concrete column is solved, the connection process is simplified, temporary supports do not need to be additionally erected, the construction efficiency is improved, and the overall stability of the concrete column is improved. The present invention will be described with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a front view of an embodiment of a structure of a precast concrete column of the inverted grouting type according to the present invention. The structure of the inverted grouting type precast concrete column according to the present invention will be described with reference to fig. 1.
As shown in fig. 1, the present invention provides a reverse-grouting precast concrete column structure, which comprises:
prefabricating a formed first prefabricated section 11, wherein a plurality of first steel bars 111 are embedded in the first prefabricated section 11, and part of the first steel bars 111 protrude outwards from the top of the first prefabricated section 11;
a core section 13 prefabricated and arranged on the top of the first prefabricated section 11, a through hole is formed in the core section 13 corresponding to the first steel bar 111, the first steel bar 111 penetrates through the through hole and is arranged in the core section 13, a connecting piece 131, part of which protrudes outwards and is fixedly connected with the cross beam 21, is embedded in the core section 13, a vertical grouting pipe 132 for grouting is embedded in the core section 13, and the end part of the grouting pipe 132 is correspondingly flush with the bottom surface and the top surface of the core section 13; and
a second prefabricated section 12 prefabricated and arranged at the top of the core section 13, wherein a plurality of second steel bars 121 are embedded in the second prefabricated section 12 corresponding to the first steel bars 111, part of the second prefabricated section 12 protrudes outwards from the bottom of the second prefabricated section 12, and the protruding parts of the second steel bars 121 extend into the core section 13 through holes and are in butt joint with the first steel bars 111;
the through hole is filled by pouring grout into the grouting pipe 132, and then the second prefabricated section 12 is placed on the top of the core section 13, so that the second steel bar 121 is correspondingly inserted into the grout in the through hole, thereby fixedly connecting the first steel bar 111 and the second steel bar 121 and forming an integrated concrete column structure.
Preferably, the core section 13 is embedded with corrugated pipes corresponding to the first steel bars 111 to form through holes and facilitate the first steel bars 111 to pass through the core section 13.
Preferably, the gap between the first prefabricated section 11 and the core section 13 is filled with base slurry, the base slurry takes cement as a cementing material, is matched with a composite additive and high-strength aggregate, and can be used after being added with water and stirred on site.
Specifically, the first steel bar 111 is connected to the second steel bar 121 through a sleeve, and the sleeve is pre-buried in the core section 13.
Specifically, the cross beam 21 is a steel beam with an i-shaped cross section;
the connecting member 131 includes a steel rib 1312 pre-embedded in the core section 13 and an i-steel 1311 fixed to the steel rib 1312 and partially protruding outwards, the size of the i-steel 1311 is matched with that of the steel beam, the i-steel 1311 is fixedly connected with the steel beam, so that the concrete column structure is fixedly connected with the cross beam 21, and the steel rib 1312 can further improve the strength of the core section 13 and the strength of the connection part with the cross beam 21.
As a preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, a plurality of floor slab reinforcing bars 221 are bound above the beam 21;
a plurality of connecting ribs 133 are embedded in the core section 13 corresponding to the floor slab reinforcing bars 221, and the connecting ribs 133 partially protrude outwards from the side portion of the core section 13 to be in butt joint with the floor slab reinforcing bars 221, so as to form the floor slab 22 by pouring concrete on the cross beam 21, and the floor slab reinforcing bars 221 and the connecting ribs 133 are both embedded in the floor slab 22.
Preferably, the connecting rib 133 is butt-jointed to the floor slab reinforcing bars 221 by means of an extrusion sleeve.
As another preferred embodiment of the present invention, as shown in fig. 3 and 4, a plurality of floor slab reinforcing bars 221 are bound above the beam 21;
a set distance is reserved between the top surface of the core section 13 and the bottom surface of the second prefabricated section 12 for the floor slab steel bars 221 to pass through;
concrete is poured on the top of the cross beam 21 to form a floor slab 22, and then slurry is poured on the top of the core section 13 to fixedly connect the core section 13 and the second prefabricated section 12, so that an integrated concrete column structure is formed.
The specific embodiment of the invention is as follows:
fixing the first prefabricated section 11 on the ground, placing the core section 13 on the top of the first prefabricated section 11, and penetrating the first steel bar 111 into the core section 13;
the connecting piece 131 of the core section 13 is fixedly connected with the corresponding cross beam 21 and can be fixed in a mode of fixedly connecting a connecting plate and a bolt;
if the core section 13 is pre-embedded with connecting bars 133, as shown in fig. 1 and 2, floor slab reinforcing bars 221 are bound above the cross beams 21, and the floor slab reinforcing steel bars 221 and the corresponding connecting bars 133 are fixedly connected through the extrusion sleeves, concrete is poured on the cross beams 21 to form the floor slab 22, at the moment, the corresponding parts of the floor slab reinforcing steel bars 221 and the connecting steel bars 133 are buried in the floor slab 22, grouting into the grouting pipe 132, the grout flows to the bottom of the core section 13 through the grouting pipe 132 and flows to the first reinforcement 111 along the top of the first precast segment 11, and flows along the first rebar 111 until it fills the through-hole and emerges from the top of the through-hole, placing the second precast segment 12 on top of the core segment 13, the second steel bars 121 are correspondingly inserted into the unset slurry in the through holes, redundant slurry in the through holes is extruded out to fill the gap between the second prefabricated section 12 and the core section 13, and the second prefabricated section 12 is fixedly connected with the core section 13 after the slurry is solidified;
if the core section 13 is not pre-embedded with the connecting bar 133, as shown in fig. 3 and 4, the floor slab reinforcing bars 221 are bound on the cross beam 21, and the floor slab reinforcing bars 221 pass through the top of the core section 13, the form 23 is erected at the top edge of the core section 13 to enclose the through hole, the floor slab reinforcing bars 221 correspondingly pass through the grooves of the form 23, concrete is poured on the cross beam 21 outside the form 23, so that the corresponding portions of the floor slab reinforcing bars 221 are embedded in the floor slab 22, the form 23 is removed, at this time, a concave space is formed at the top of the core section 13, slurry is poured on the concave space, the slurry flows to the bottom of the core section 13 through the slurry pouring pipe 132 and fills the through hole along the first reinforcing bars 111 until the surface of the slurry is close to the surface of the floor slab 22, the second prefabricated section 12 is placed at the top of the core section 13, and the second reinforcing bars 121 are inserted in the slurry which is not coagulated in the through hole, after the slurry, the first steel bars 111 and the second steel bars 121 are fixedly connected to form an integrated concrete column structure;
the concrete column formed by the method is connected with the cross beam 21 and the floor slab 22 to form an integral structure, the floor slab 22 and the cross beam 21 are high in bearing capacity, the process is simple, no supporting structure needs to be additionally erected, and no reinforcing steel bar of the concrete column and the floor slab 22 or the reinforcing steel bar of the cross beam 21 need to be bound on site, so that the construction efficiency is improved, in addition, the process of pouring firstly and then inserting reversely is adopted, the post-pouring operation is avoided, the waiting time is saved, the operation is convenient, and the grouting construction quality is also ensured.
The invention also provides a construction method of the inverted grouting type precast concrete column structure, which comprises the following steps:
providing a prefabricated first prefabricated section 11, and fixing the first prefabricated section 11 at a specified position;
providing a prefabricated core section 13, placing the core section 13 on the first prefabricated section 11, penetrating a first steel bar into the core section 13 through a through hole, and fixedly connecting the connecting piece 131 with the corresponding cross beam 21;
and pouring slurry into the grouting pipe 132 to fill the through hole, providing a prefabricated second prefabricated section 12, placing the second prefabricated section 12 on the core section 13 before the slurry is solidified, and correspondingly inserting the second steel bar 121 into the slurry in the through hole, so that the first steel bar 111 and the second steel bar 121 are fixedly connected, thereby forming an integrated concrete column structure.
Furthermore, a plurality of floor slab reinforcing steel bars 221 are bound above the cross beam 21, and a plurality of connecting ribs 133 are embedded in the core section 13 corresponding to the floor slab reinforcing steel bars 221;
after the core section 13 is installed, the connecting piece 131 is fixedly connected with the corresponding beam 21, the connecting rib 133 is in butt joint with the corresponding floor slab reinforcing steel bar 221, concrete is poured on the top of the beam 21 to form the floor slab 22, and the floor slab reinforcing steel bar 221 and the connecting rib 133 are both buried in the floor slab 22.
Furthermore, a plurality of floor slab reinforcing steel bars 221 are bound above the cross beam 21, and a set distance is reserved between the core section 13 and the second prefabricated section 12 for the floor slab reinforcing steel bars 221 to pass through;
after the core section 13 is placed at the top 11 of the first prefabricated section, the floor slab reinforcing steel bars 221 are bound, the template 23 is erected along the top edge of the core section 13 to enclose the through hole, concrete is poured on the top of the beam 21 outside the template 23 to form the floor slab 22, the floor slab reinforcing steel bars 221 are buried in the floor slab 22, the template 23 is removed, slurry is poured on the top of the core section 13 to fill the through hole, the second prefabricated section 12 is placed on the core section 13, and the second reinforcing steel bars 121 are correspondingly inserted into the slurry in the through hole, so that the first reinforcing steel bars 111 are fixedly connected with the second reinforcing steel bars 121.
Preferably, as shown in fig. 5, the form 23 has a plurality of grooves formed therein for the floor reinforcing bars 221 to pass through.
The concrete implementation mode of the inverted grouting type precast concrete column structure is as follows:
fixing the first prefabricated section 11 on the ground, placing the core section 13 on the top of the first prefabricated section 11, and penetrating the first steel bar 111 into the core section 13;
the connecting piece 131 of the core section 13 is fixedly connected with the corresponding cross beam 21 and can be fixed in a mode of fixedly connecting a connecting plate and a bolt;
if the core section 13 is pre-embedded with connecting bars 133, as shown in fig. 1 and 2, floor slab reinforcing bars 221 are bound above the cross beams 21, and the floor slab reinforcing steel bars 221 and the corresponding connecting bars 133 are fixedly connected through the extrusion sleeves, concrete is poured on the cross beams 21 to form the floor slab 22, at the moment, the corresponding parts of the floor slab reinforcing steel bars 221 and the connecting steel bars 133 are buried in the floor slab 22, grouting into the grouting pipe 132, the grout flows to the bottom of the core section 13 through the grouting pipe 132 and flows to the first reinforcement 111 along the top of the first precast segment 11, and flows along the first rebar 111 until it fills the through-hole and emerges from the top of the through-hole, placing the second precast segment 12 on top of the core segment 13, the second steel bars 121 are correspondingly inserted into the unset slurry in the through holes, redundant slurry in the through holes is extruded out to fill the gap between the second prefabricated section 12 and the core section 13, and the second prefabricated section 12 is fixedly connected with the core section 13 after the slurry is solidified;
if the core section 13 is not pre-embedded with the connecting bar 133, as shown in fig. 3 and 4, the floor slab reinforcing bars 221 are bound on the cross beam 21, and the floor slab reinforcing bars 221 pass through the top of the core section 13, the form 23 is erected at the top edge of the core section 13 to enclose the through hole, the floor slab reinforcing bars 221 correspondingly pass through the grooves of the form 23, concrete is poured on the cross beam 21 outside the form 23, so that the corresponding portions of the floor slab reinforcing bars 221 are embedded in the floor slab 22, the form 23 is removed, at this time, a concave space is formed at the top of the core section 13, slurry is poured on the concave space, the slurry flows to the bottom of the core section 13 through the slurry pouring pipe 132 and fills the through hole along the first reinforcing bars 111 until the surface of the slurry is close to the surface of the floor slab 22, the second prefabricated section 12 is placed at the top of the core section 13, and the second reinforcing bars 121 are inserted in the slurry which is not coagulated in the through hole, after the slurry, the first steel bar 111 and the second steel bar 121 are fixedly connected to form an integrated concrete column structure.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a reverse insertion slip casting formula precast concrete post structure which characterized in that includes:
prefabricating a formed first prefabricated section, wherein a plurality of first steel bars are embedded in the first prefabricated section, and part of the first steel bars protrude outwards from the top of the first prefabricated section;
the core section is prefabricated and arranged at the top of the first prefabricated section, a through hole is formed in the core section corresponding to the first steel bar, the first steel bar penetrates through the through hole and is arranged in the core section, a connecting piece is pre-embedded in the core section, part of the connecting piece protrudes outwards and is fixedly connected with the cross beam, a vertical grouting pipe for grouting slurry is pre-embedded in the core section, and the end part of the grouting pipe is correspondingly flush with the bottom surface and the top surface of the core section; and
a second prefabricated section which is prefabricated and is arranged at the top of the core section, wherein a plurality of second steel bars are pre-embedded in the second prefabricated section corresponding to the first steel bars, the second steel bars partially protrude outwards from the bottom of the second prefabricated section, and the protruding parts of the second steel bars extend into the core section through the through holes and are in butt joint with the first steel bars;
and filling the through hole with slurry by pouring slurry into the grouting pipe, and placing the second prefabricated section on the top of the core section, so that the second steel bars are correspondingly inserted into the slurry in the through hole, and the first steel bars and the second steel bars are fixedly connected to form an integrated concrete column structure.
2. The inverted grouting type precast concrete column structure according to claim 1, wherein the beam is a steel beam having an i-shaped section;
the connecting piece comprises a steel rib pre-buried in the core section and an I-shaped steel which is fixed on the steel rib and partially protrudes outwards, the size of the I-shaped steel is matched with that of the steel beam, and the concrete column structure is fixedly connected with the cross beam through the I-shaped steel and the steel beam.
3. The inverted grouting type precast concrete column structure according to claim 2, wherein a plurality of floor slab reinforcing steel bars are bound above the cross beam;
the core section is pre-buried with a plurality of splice bars corresponding to the floor slab reinforcing bars, and the splice bar part is from the lateral part of the core section to the evagination in order to be connected with the butt joint of floor slab reinforcing bar, through pour concrete on the crossbeam in order to form the floor slab, and the floor slab reinforcing bar with the splice bar all buries underground in the floor slab.
4. The inverted grouting precast concrete column structure of claim 3, wherein the connecting rib is butt-jointed with the floor slab reinforcing steel by an extrusion sleeve.
5. The inverted grouting type precast concrete column structure according to claim 2, wherein a plurality of floor slab reinforcing steel bars are bound above the cross beam;
a set distance is reserved between the top surface of the core section and the bottom surface of the second prefabricated section so that the floor slab steel bars can penetrate through the core section;
and pouring concrete on the top of the cross beam to form a floor slab, and pouring slurry on the top of the core section to fixedly connect the core section and the second prefabricated section, so that an integrated concrete column structure is formed.
6. The column structure of claim 1, wherein a gap between the first precast segment and the core segment is filled with a socket slurry.
7. The inverted grouting type precast concrete column structure of claim 1, wherein the first steel bars are connected with the second steel bars in a butt joint manner through sleeves, and the sleeves are pre-embedded in the core section.
8. The construction method of the inverted grouting type precast concrete column structure according to claim 1, comprising the steps of:
providing the prefabricated first prefabricated section, and fixing the first prefabricated section at a specified position;
providing the prefabricated core section, placing the core section on the first prefabricated section, penetrating the first steel bar into the core section through the through hole, and fixedly connecting the connecting piece with the corresponding cross beam;
and pouring slurry into the grouting pipe to fill the through hole, providing the prefabricated second prefabricated section, placing the second prefabricated section on the core section before the slurry is condensed, and correspondingly inserting the second steel bar into the slurry in the through hole, so that the first steel bar and the second steel bar are fixedly connected, and the integrated concrete column structure is formed.
9. The method for constructing a reverse-grouting precast concrete column structure according to claim 8, wherein a plurality of floor slab reinforcements are bound above the beam, and a plurality of connecting reinforcements are embedded in the core section corresponding to the floor slab reinforcements;
after the core section is installed, the connecting piece is fixedly connected with the corresponding beam, the connecting rib is in butt joint with the corresponding floor slab reinforcing steel bar, concrete is poured on the top of the beam to form a floor slab, and the floor slab reinforcing steel bar and the connecting rib are buried in the floor slab.
10. The method for constructing a reverse-grouting precast concrete column structure according to claim 8, wherein a plurality of floor slab reinforcing bars are bound above the cross beam, and a set distance is provided between the core section and the second precast section for the floor slab reinforcing bars to pass through;
and after the core section is arranged at the top of the first prefabricated section, binding the floor slab reinforcing steel bars, erecting a template along the top edge of the core section to enclose the through hole, pouring concrete at the top of the beam outside the template to form a floor slab, embedding the floor slab reinforcing steel bars in the floor slab, further dismantling the template and pouring slurry at the top of the core section to fill the through hole, arranging the second prefabricated section on the core section, and correspondingly inserting the second reinforcing steel bars into the slurry in the through hole, so that the first reinforcing steel bars are fixedly connected with the second reinforcing steel bars.
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| CN202010383458.5A CN111502123A (en) | 2020-05-08 | 2020-05-08 | Inverted grouting type precast concrete column structure and construction method thereof |
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| CN202010383458.5A CN111502123A (en) | 2020-05-08 | 2020-05-08 | Inverted grouting type precast concrete column structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095785A (en) * | 2020-08-10 | 2020-12-18 | 中建集成建筑有限公司 | Grouting connection structure of modular structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095785A (en) * | 2020-08-10 | 2020-12-18 | 中建集成建筑有限公司 | Grouting connection structure of modular structure and construction method thereof |
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