CN113374180A - Grouting sleeve connection concrete reinforcing structure and construction method - Google Patents

Grouting sleeve connection concrete reinforcing structure and construction method Download PDF

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Publication number
CN113374180A
CN113374180A CN202110689507.2A CN202110689507A CN113374180A CN 113374180 A CN113374180 A CN 113374180A CN 202110689507 A CN202110689507 A CN 202110689507A CN 113374180 A CN113374180 A CN 113374180A
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shear
concrete
resistant
steel plate
additional shear
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CN113374180B (en
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姚攀峰
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor
    • E04B1/215Connections specially adapted therefor comprising metallic plates or parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/58Connections for building structures in general of bar-shaped building elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12Mounting of reinforcing inserts; Prestressing
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12Mounting of reinforcing inserts; Prestressing
    • E04G21/122Machines for joining reinforcing bars
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/246Safety 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0222Replacing or adding wall ties
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0237Increasing or restoring the load-bearing capacity of building construction elements of storey floors

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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Abstract

A grouting sleeve connection concrete reinforcing structure and a construction method comprise an upper structure and a lower structure, wherein the upper structure comprises an upper layer precast concrete wallboard, the lower structure comprises a lower layer concrete wallboard and a concrete floor slab between two layers of wallboards, a column plate connecting node comprises an additional shear steel plate and at least two rows of horizontal shear pieces matched with the additional shear steel plate, the inner side of the additional shear steel plate is bonded with the surface of the upper layer precast concrete wallboard for reinforcing, a vertical slot for inserting the additional shear steel plate is formed in the position, corresponding to the additional shear steel plate, on the concrete floor slab, and the horizontal shear pieces are pull-connected pieces between the additional shear steel plates on the front side and the rear side. The shear capacity of the horizontal joint area of the shear wall is enhanced by adopting the additional shear steel plates, the additional shear steel plates are directly adhered to two sides of the shear wall or a groove is formed in the shear wall, the additional shear steel plates are placed in the groove, and the common shear action of the steel plates and the concrete wall is further improved by pulling and connecting the horizontal shear pieces on the two sides into a whole.

Description

Grouting sleeve connection concrete reinforcing structure and construction method
Technical Field
The invention relates to a precast concrete reinforcing structure, in particular to a grouting sleeve connection concrete reinforcing structure and a construction method.
Background
The building industrialization is the key point of national construction and development, the main structure of the current building industrialization is that a wall body is a precast concrete wallboard, a shear wall structure system connected by a grouting sleeve is adopted between the upper part and the lower part, and the problems of high construction quality control difficulty, long construction period, low tensile strength, poor earthquake resistance, poor ductility under the action of an earthquake and easy brittle failure exist. Particularly, in actual construction, because the construction level of workers is uneven, the misalignment between the steel bars and the sleeves is easily caused, and the workers bake the steel bars by using gas welding to forcibly bend the steel bars; the connecting nodes of some precast concrete members are not fully grouted, and the construction quality of part of projects cannot meet the requirements, so that the risk of the precast shear wall system in the earthquake is increased. Therefore, it is necessary to reinforce the project whose quality is not up to the requirement.
Disclosure of Invention
The invention aims to provide a grouting sleeve connection concrete reinforcing structure and a construction method, and aims to solve the technical problem that the construction quality of a connection node of a prefabricated column and a floor slab is not up to standard, so that the earthquake resistance of a house is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a grout muffjoint concrete reinforced structure, includes wallboard connected node, the wallboard connected node includes superstructure and substructure, the superstructure includes upper precast concrete wallboard, the substructure includes concrete floor between lower concrete wallboard and two-layer wallboard,
the upper precast concrete wallboard comprises upper vertical wall ribs, upper horizontal wall ribs and upper concrete, the lower precast concrete wallboard comprises lower vertical wall ribs, lower horizontal wall ribs and lower concrete, the upper half part of the grouting sleeve is sleeved at the bottom of the upper vertical wall ribs, the grouting sleeve is positioned in the upper precast concrete wallboard, the lower side surface of the grouting sleeve is flush with or higher than the lower side surface of the upper precast concrete wallboard, the lower vertical wall ribs correspond to the upper vertical wall ribs one to one, the top part of the lower vertical wall ribs penetrates through the concrete floor slab and is anchored into the lower half part of the grouting sleeve, the grouting sleeve is filled with grouting material, and the floor slab comprises upper reinforcing steel bars of the floor slab, lower reinforcing steel bars of the floor slab and floor slab concrete,
the column plate connecting node also comprises an additional shear-resistant steel plate and at least two rows of horizontal shear-resistant pieces matched with the additional shear-resistant steel plate,
the additional shear steel plates are vertically provided with at least one group along the width direction of the wallboard, two additional shear steel plates in each group are respectively and correspondingly arranged at the front side and the rear side of the wallboard connecting node, the upper part of the additional shear steel plate at each side is tightly attached to the bottom surface of the upper precast concrete wallboard, the lower part of the additional shear steel plate at each side is fixedly connected with the lower structure,
the inner side of the additional shear steel plate is bonded with the surface of the upper precast concrete wallboard for reinforcement, a vertical slot for the additional shear steel plate to be inserted is arranged at the position on the concrete floor slab corresponding to the additional shear steel plate, a rear plugging material is filled in the vertical slot and around the additional shear steel plate,
the horizontal shear resistant part is a pulling part between the front and rear additional shear resistant steel plates, the horizontal shear resistant part comprises an upper layer shear resistant part, an upper layer pore channel for the upper layer shear resistant part to penetrate through is formed in the upper layer precast concrete wallboard, the upper layer pore channel is positioned above the grouting sleeve, the upper layer shear resistant part penetrates into the upper layer pore channel, the two ends of the upper layer shear resistant part are pulled to connect the upper parts of the front and rear additional shear resistant steel plates, the upper layer shear resistant part is fixedly connected with the upper parts of the additional shear resistant steel plates, and the upper layer pore channel is filled with a rear plugging material,
the horizontal shear-resistant part further comprises a lower layer shear-resistant part, a lower layer duct for the lower layer shear-resistant part to penetrate through is formed in the lower structure, the lower layer shear-resistant part penetrates into the lower layer duct, the two ends of the lower layer shear-resistant part are connected with the lower portions of the front and rear sides of the lower layer duct in a pulling mode, the lower layer shear-resistant part is fixedly connected with the lower portions of the additional shear-resistant steel plates, and the lower layer duct is filled with a rear plugging material.
The reinforcement width of the additional shear steel plates is located within the 1/3 area at the wall end of the wallboard connection node,
the outer side surface of the additional shear steel plate protrudes out of the outer side surface of the upper precast concrete wallboard and is attached to the outer side surface of the upper precast concrete wallboard, or the outer side surface of the upper precast concrete wallboard is provided with an upper groove for the additional shear steel plate to be placed in, and the outer side surface of the upper precast concrete wallboard is flush with the outer side surface of the additional shear steel plate.
The vertical slot is non-through and is slotted to the lower part of the plate body of the concrete floor, the lower end of the additional shear-resistant steel plate is inserted into the vertical slot, and the lower-layer pore passage is a floor pore passage which is formed in the concrete floor and through which the lower-layer shear-resistant piece passes.
The vertical slot link up the concrete floor, the lower extreme of additional shear steel sheet passes vertical slot and its lower part is hugged closely and is extended to the top surface of lower floor concrete wallboard, lower floor's pore is opened the lower floor wallboard pore that has the lower floor's shear member of confession to run through on the lower floor concrete wallboard, the inboard of additional shear steel sheet is glued the steel with the surface of lower floor concrete wallboard and is consolidated.
The outside surface evagination of additional shear steel board in the outside surface of lower floor's precast concrete wallboard and rather than the laminating, perhaps the outside surface of lower floor's precast concrete wallboard avoids reinforcing bar and grout sleeve position to open and has the lower floor's recess that supplies additional shear steel board to put into, the outside surface of lower floor's precast concrete wallboard and the outside surface parallel and level of additional shear steel board.
A construction method for a grouting sleeve connection concrete reinforcement structure comprises the following construction steps:
firstly, processing and manufacturing an additional shear-resistant steel plate and a horizontal shear-resistant piece in a factory;
step two, performing surface treatment on the upper precast concrete wallboard at the reinforced part to expose stones and avoid manufacturing an upper pore passage and a lower pore passage by using reinforcing steel bars;
step three, performing surface treatment on the concrete floor slab at the reinforced part to expose stones and avoid manufacturing vertical slots by using reinforcing steel bars;
installing an additional shear-resistant steel plate, penetrating the upper-layer shear-resistant piece through an upper-layer duct, penetrating the lower-layer shear-resistant piece through a lower-layer duct, and then fixedly connecting the upper-layer shear-resistant piece and the lower-layer shear-resistant piece with the additional shear-resistant steel plate;
fifthly, pouring a rear plugging material in the vertical slot; filling the upper layer pore canal and the lower layer pore canal with a post-plugging material;
and step six, curing the plugging material to a preset strength.
And constructing an upper-layer groove in the second step, and arranging an additional shear-resistant steel plate in the upper-layer groove.
And the following steps are added:
in the second step, the surface of the lower layer concrete wallboard at the reinforced part is also treated to expose stones and avoid manufacturing a lower layer pore canal by using reinforcing steel bars;
in the fourth step, an additional shear-resistant steel plate is installed, and the lower layer shear-resistant piece penetrates through the lower layer pore canal to be anchored;
in the fifth step, plugging materials are filled in the lower layer of plugging channels;
and in the second step, constructing a lower-layer groove, and arranging an additional shear-resistant steel plate in the lower-layer groove.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the invention solves the technical problem that the construction quality of the connecting joint of the prefabricated column and the floor slab is not up to standard, thereby influencing the earthquake resistance of the house. Aiming at the defects of the existing wallboard connecting node, the shear resistance of the horizontal joint area of the shear wall is enhanced by adopting the additional shear steel plate for the reinforcing structure, the additional shear steel plate is directly adhered to two sides of the shear wall or a groove is formed in the shear wall, the additional shear steel plate is placed in the groove and then is pulled and connected into a whole through the horizontal shear pieces on the two sides, the combination of the additional shear steel plate and the horizontal shear pieces is used for further improving the common shear action of the steel plate and the concrete wall, the additional shear steel plate is placed in the wall end area and is not more than 1/3 of the wall length, and the bending resistance bearing capacity of the wall is properly improved.
The reinforcing structure can effectively improve the shearing resistance and the bending resistance of the grouting sleeve connected concrete shear wall, and is easy to construct. The additional shear steel plate in the reinforcing structure can be arranged above the steel bar at the bottom of the floor slab as required, so that the interference on the use of a lower-layer house is reduced, and the shear bearing capacity of the position can be further enhanced by penetrating through the floor slab. The additional shear steel plate is convenient to process and use, and can be made of stainless steel, weathering steel or the outer side of the additional shear steel plate is wrapped with concrete to generate an anti-corrosion effect.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a position a-a and a position E-E according to a third embodiment of the present invention.
Fig. 6 is a schematic cross-sectional structure diagram of a B-B position and an F-F position in a third embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view of the C-C position of the second embodiment of the present invention and the G-G position of the fourth embodiment of the present invention.
FIG. 8 is a schematic cross-sectional view of the D-D position of the second embodiment and the H-H position of the fourth embodiment.
Reference numerals: 1-upper precast concrete wallboard, 11-upper vertical wall reinforcement, 12-upper horizontal wall reinforcement, 13-upper concrete, 2-lower concrete wallboard, 21-lower vertical wall reinforcement, 22-lower horizontal wall reinforcement, 23-lower concrete, 3-concrete floor slab, 31-floor slab upper reinforcement, 32-floor slab lower reinforcement, 33-floor slab concrete, 4-grouting sleeve, 5-additional shear steel plate, 6-horizontal shear piece, 61-upper shear piece, 62-lower shear piece, 7-vertical slot, 8-rear plugging material, 9-upper pore channel, 10-lower wallboard pore channel and 14-floor pore channel.
Detailed Description
Referring to figures 1, 5 and 6, a grouted slip joint concrete reinforcing structure comprises a wall panel connection node comprising an upper structure comprising an upper precast concrete wall panel 1 and a lower structure comprising a lower concrete wall panel 2 and a concrete floor slab 3 between the two wall panels. The lower layer concrete wallboard is a prefabricated wallboard or a cast-in-place wallboard.
The upper precast concrete wallboard comprises an upper wall vertical rib 11, an upper wall horizontal rib 12 and upper wall concrete 13, the lower precast concrete wallboard comprises a lower wall vertical rib 21, a lower wall horizontal rib 22 and lower wall concrete 23, the upper half part of the grouting sleeve 4 is sleeved at the bottom of the upper wall vertical rib 11, the grouting sleeve 4 is positioned in the upper precast concrete wallboard and the lower side surface of the grouting sleeve is flush with or higher than the lower side surface of the upper precast concrete wallboard 1, the lower wall vertical rib 21 and the upper wall vertical rib 11 correspond one to one, the top of the lower wall vertical rib 21 penetrates through the concrete floor slab 3 to be anchored into the lower half part of the grouting sleeve 4, grouting slurry is filled in the grouting sleeve, and the floor slab comprises a floor slab upper reinforcing steel bar 31, a floor slab lower reinforcing steel bar 32 and floor slab concrete 33.
The column plate connecting node further comprises an additional shear steel plate 5 and two rows of horizontal shear pieces 6 matched with the additional shear steel plate 5. The reinforcement width of the additional shear steel plates 5 is located within the 1/3 area of the wall end of the wall panel connection node.
The additional shear steel plate 5 is vertical to be provided with at least a set of along the width direction of wallboard, and every group adds shear steel plate 5 totally two, corresponds the setting respectively in wallboard connected node's front and back both sides, and the bottom surface of upper precast concrete wallboard 1 is all hugged closely on the upper portion of the additional shear steel plate 5 of every side, and the lower part and the substructure fixed connection of the additional shear steel plate 5 of every side.
The inner side of the additional shear steel plate 5 is reinforced with the surface adhesive steel of the upper precast concrete wallboard 1, a vertical slot 7 for inserting the additional shear steel plate is formed in the position, corresponding to the additional shear steel plate, of the concrete floor slab 3, the insertion depth of the additional shear steel plate 5 is based on the upper skin of the lower layer steel bar 32 of the floor slab, and the rear plugging material 8 is filled in the vertical slot 7 and around the additional shear steel plate.
The horizontal shear resistant part 6 is a pulling part between the front and rear side additional shear resistant steel plates, the horizontal shear resistant part comprises an upper layer shear resistant part 61, an upper layer pore channel 9 for the upper layer shear resistant part 61 to penetrate through is formed in the upper layer precast concrete wallboard, the upper layer pore channel 9 is positioned above the grouting sleeve 4, the upper layer shear resistant part 61 penetrates into the upper layer pore channel 9, the two ends of the upper layer shear resistant part are pulled to connect the upper parts of the front and rear side additional shear resistant steel plates 5, the upper layer shear resistant part 61 is fixedly connected with the upper parts of the additional shear resistant steel plates, and the upper layer pore channel 9 is filled with a rear plugging material 8.
The horizontal shear-resistant part 6 further comprises a lower layer shear-resistant part 62, a lower layer duct through which the lower layer shear-resistant part 62 penetrates is formed in the lower layer structure, the lower layer shear-resistant part 62 penetrates into the lower layer duct, the two ends of the lower layer shear-resistant part are connected with the lower parts of the front and rear additional shear-resistant steel plates 5 in a pulling mode, the lower layer shear-resistant part 62 is fixedly connected with the lower parts of the additional shear-resistant steel plates, and the lower layer duct is filled with a rear.
The horizontal shear resistant part and the additional shear resistant steel plate are fixedly connected in a bolting, welding or riveting mode. In this embodiment a bolt-anchored connection. The upper layer pore path is provided with two rows along the height direction of the wall board, and four paths are arranged in the width direction of each row.
The outer side surface of the additional shear steel plate 5 protrudes out of and is attached to the outer side surface of the upper precast concrete wall panel 1.
The vertical slot 7 is non-through slotted to the lower part of the concrete floor slab 3, the lower end of the additional shear steel plate 5 is inserted into the vertical slot 7, and the lower-layer pore passage is a floor slab pore passage 14 which is formed in the concrete floor slab 3 and through which the lower-layer shear-resistant piece 62 passes. The lower layer pore canal is provided with two rows along the height direction of the wallboard, and four channels are arranged along the width direction of each row.
The width that sets up of vertical slot is greater than the width of additional shear steel sheet 5, and the outer contour line parallel and level of the inboard contour line of vertical slot and wallboard or the inboard of orientation wallboard surpass the outer contour line of wallboard. In this embodiment, the inside contour line of vertical slot is flush with the outer contour line of wallboard or exceeds the outer contour line of wallboard towards the inboard of wallboard.
The construction method of the grouting sleeve connection concrete reinforcing structure comprises the following construction steps:
firstly, processing and manufacturing an additional shear steel plate 5 and a horizontal shear part 6 in a factory;
step two, performing surface treatment on the upper precast concrete wallboard 1 at the reinforced part to expose stones and avoid manufacturing an upper pore channel 9 and a lower pore channel by using reinforcing steel bars;
step three, performing surface treatment on the concrete floor slab at the reinforced part to expose stones and avoid manufacturing vertical slots 7 by using reinforcing steel bars;
step four, installing an additional shear-resistant steel plate 5, enabling the upper-layer shear-resistant part 61 to penetrate through the upper-layer duct 9, enabling the lower-layer shear-resistant part 62 to penetrate through the lower-layer duct, and then fixedly connecting the upper-layer shear-resistant part 61 and the lower-layer shear-resistant part 62 with the additional shear-resistant steel plate;
fifthly, pouring a rear plugging material 8 in the vertical slot 7; the upper layer pore canal 9 and the lower layer pore canal are also filled with the post-plugging material 8;
and step six, curing the plugging material 8 to a preset strength.
Second embodiment referring to fig. 2, 7 and 8, unlike the first embodiment, the outer side surface of the upper precast concrete wall panel 1 is provided with an upper groove into which the additional shear steel plate 5 is inserted, avoiding the position of the reinforcing bars and the grouting sleeves, and the outer side surface of the upper precast concrete wall panel 1 is flush with the outer side surface of the additional shear steel plate 5.
Compared with the first embodiment, the construction method for the grouting sleeve connection concrete reinforcing structure has the following additional construction steps: and constructing an upper-layer groove in the second step, and arranging an additional shear-resistant steel plate 5 in the upper-layer groove.
Third embodiment referring to fig. 3, 5 and 6, a grouted, muff-coupled concrete reinforcing structure includes a wall panel coupling node including an upper structure including an upper precast concrete wall panel 1 and a lower structure including a lower concrete wall panel 2 and a concrete floor panel 3 between the two wall panels.
The upper precast concrete wallboard comprises an upper wall vertical rib 11, an upper wall horizontal rib 12 and upper wall concrete 13, the lower precast concrete wallboard comprises a lower wall vertical rib 21, a lower wall horizontal rib 22 and lower wall concrete 23, the upper half part of the grouting sleeve 4 is sleeved at the bottom of the upper wall vertical rib 11, the grouting sleeve 4 is positioned in the upper precast concrete wallboard and the lower side surface of the grouting sleeve is flush with or higher than the lower side surface of the upper precast concrete wallboard 1, the lower wall vertical rib 21 and the upper wall vertical rib 11 correspond one to one, the top of the lower wall vertical rib 21 penetrates through the concrete floor slab 3 to be anchored into the lower half part of the grouting sleeve 4, grouting slurry is filled in the grouting sleeve, and the floor slab comprises a floor slab upper reinforcing steel bar 31, a floor slab lower reinforcing steel bar 32 and floor slab concrete 33.
The column plate connecting node further comprises an additional shear steel plate 5 and two rows of horizontal shear pieces 6 matched with the additional shear steel plate 5. The reinforcement width of the additional shear steel plates 5 is located within the 1/3 area of the wall end of the wall panel connection node.
The additional shear steel plate 5 is vertical to be provided with at least a set of along the width direction of wallboard, and every group adds shear steel plate 5 totally two, corresponds the setting respectively in wallboard connected node's front and back both sides, and the bottom surface of upper precast concrete wallboard 1 is all hugged closely on the upper portion of the additional shear steel plate 5 of every side, and the lower part and the substructure fixed connection of the additional shear steel plate 5 of every side.
The inner side of the additional shear steel plate 5 is reinforced with the surface adhesive steel of the upper precast concrete wallboard 1, a vertical slot 7 for inserting the additional shear steel plate is formed in the position, corresponding to the additional shear steel plate, of the concrete floor slab 3, the insertion depth of the additional shear steel plate 5 is based on the upper skin of the lower layer steel bar 32 of the floor slab, and the rear plugging material 8 is filled in the vertical slot 7 and around the additional shear steel plate.
The horizontal shear resistant part 6 is a pulling part between the front and rear side additional shear resistant steel plates, the horizontal shear resistant part comprises an upper layer shear resistant part 61, an upper layer pore channel 9 for the upper layer shear resistant part 61 to penetrate through is formed in the upper layer precast concrete wallboard, the upper layer pore channel 9 is positioned above the grouting sleeve 4, the upper layer shear resistant part 61 penetrates into the upper layer pore channel 9, the two ends of the upper layer shear resistant part are pulled to connect the upper parts of the front and rear side additional shear resistant steel plates 5, the upper layer shear resistant part 61 is fixedly connected with the upper parts of the additional shear resistant steel plates, and the upper layer pore channel 9 is filled with a rear plugging material 8.
The horizontal shear-resistant part 6 further comprises a lower layer shear-resistant part 62, a lower layer duct through which the lower layer shear-resistant part 62 penetrates is formed in the lower layer structure, the lower layer shear-resistant part 62 penetrates into the lower layer duct, the two ends of the lower layer shear-resistant part are connected with the lower parts of the front and rear additional shear-resistant steel plates 5 in a pulling mode, the lower layer shear-resistant part 62 is fixedly connected with the lower parts of the additional shear-resistant steel plates, and the lower layer duct is filled with a rear plugging material 8.
The horizontal shear resistant part and the additional shear resistant steel plate are fixedly connected in a bolting, welding or riveting mode. In this embodiment a bolt-anchored connection. The upper layer pore path is provided with two rows along the height direction of the wall board, and four paths are arranged in the width direction of each row.
The outer side surface of the additional shear steel plate 5 protrudes out of and is attached to the outer side surface of the upper precast concrete wall panel 1.
The vertical slot 7 link up concrete floor 3, the lower extreme of additional shear steel sheet 5 passes vertical slot 7 and its lower part is hugged closely and is extended to the top surface of lower floor concrete wallboard 2, lower floor's pore is opened lower floor's wallboard pore 10 that supplies lower floor's shear-resistant member 62 to run through on the lower floor concrete wallboard, the inboard of additional shear steel sheet 5 glues the steel with the surface of lower floor concrete wallboard 2 and consolidates. The lower layer pore canal is provided with two rows along the height direction of the wallboard, and four channels are arranged along the width direction of each row.
The width that sets up of vertical slot is greater than the width of additional shear steel sheet 5, and the outer contour line parallel and level of the inboard contour line of vertical slot and wallboard or the inboard of orientation wallboard surpass the outer contour line of wallboard. In this embodiment, the inside contour line of vertical slot is flush with the outer contour line of wallboard or exceeds the outer contour line of wallboard towards the inboard of wallboard.
The construction method of the grouting sleeve connection concrete reinforcing structure comprises the following construction steps:
firstly, processing and manufacturing an additional shear steel plate 5 and a horizontal shear part 6 in a factory;
step two, performing surface treatment on the upper precast concrete wallboard 1 at the reinforced part to expose stones and avoid manufacturing an upper pore channel 9 and a lower pore channel by using reinforcing steel bars; carrying out surface treatment on the lower-layer concrete wallboard 2 at the reinforcing part to expose stones and avoid manufacturing a lower-layer pore passage 10 by using reinforcing steel bars;
step three, performing surface treatment on the concrete floor slab at the reinforced part to expose stones and avoid manufacturing vertical slots 7 by using reinforcing steel bars;
step four, installing an additional shear-resistant steel plate 5, enabling the upper-layer shear-resistant part 61 to penetrate through the upper-layer duct 9, enabling the lower-layer shear-resistant part 62 to penetrate through the lower-layer duct, and then fixedly connecting the upper-layer shear-resistant part 61 and the lower-layer shear-resistant part 62 with the additional shear-resistant steel plate; installing an additional shear steel plate 5, and anchoring a lower layer shear part 62 through the lower layer duct 10;
fifthly, pouring a rear plugging material 8 in the vertical slot 7; the upper layer pore canal 9 and the lower layer pore canal are also filled with the post-plugging material 8; plugging the lower layer pore canal 10 and then plugging the material 8;
and step six, curing the plugging material 8 to a preset strength.
Fourth embodiment referring to fig. 4, 7 and 8, unlike the third embodiment, the outer side surface of the lower precast concrete wall panel 2 is provided with a lower groove into which the additional shear steel plate 5 is inserted, avoiding the position of the reinforcing bars and the grouting sleeves, and the outer side surface of the lower precast concrete wall panel 2 is flush with the outer side surface of the additional shear steel plate 5.
Compared with the embodiment, the construction method for the grouting sleeve connection concrete reinforcing structure has the following three additional construction steps: and constructing an upper-layer groove in the second step, and arranging an additional shear-resistant steel plate 5 in the upper-layer groove.
In the above embodiments, the plate body may be a general steel plate, stainless steel, or weathering steel. The width of the additional shear steel plate is not less than 20 mmm. The concrete floor is a prefabricated floor, a composite floor or a cast-in-place floor. The rear plugging material is grouting material, concrete or cement mortar. The steel plate is bonded on the surface of a concrete member by adopting a high-performance epoxy adhesive, so that the steel plate and the concrete form a unified whole, and the purpose of enhancing the bearing capacity and the rigidity of the member is achieved by utilizing the good tensile strength of the steel plate.

Claims (8)

1. The utility model provides a grout muffjoint concrete reinforcement structure, includes wallboard connected node, its characterized in that: the wallboard connecting node comprises an upper structure and a lower structure, the upper structure comprises an upper layer of prefabricated concrete wallboard (1), the lower structure comprises a lower layer of concrete wallboard (2) and a concrete floor slab (3) between two layers of wallboards,
the upper precast concrete wallboard comprises upper wall vertical ribs (11), upper wall horizontal ribs (12) and upper wall concrete (13), the lower precast concrete wallboard comprises lower wall vertical ribs (21), lower wall horizontal ribs (22) and lower wall concrete (23), the first half of the grouting sleeve (4) is sleeved at the bottom of the upper wall vertical ribs (11), the grouting sleeve (4) is positioned in the upper precast concrete wallboard and the lower side surface of the grouting sleeve is flush with the lower side surface of the upper precast concrete wallboard (1) or higher than the lower side surface, the lower wall vertical ribs (21) are in one-to-one correspondence with the upper wall vertical ribs (11), the top of the lower wall vertical ribs (21) penetrates through the concrete floor slab (3) to be anchored into the lower half of the grouting sleeve (4), the grouting sleeve is filled with grouting material, and the floor slab comprises floor slab upper reinforcing bars (31), Floor slab lower layer steel bars (32) and floor slab concrete (33),
the column plate connecting node also comprises an additional shear-resistant steel plate (5) and at least two rows of horizontal shear-resistant pieces (6) matched with the additional shear-resistant steel plate (5),
the additional shear steel plates (5) are vertically provided with at least one group along the width direction of the wallboard, two additional shear steel plates (5) in each group are respectively and correspondingly arranged at the front side and the rear side of the wallboard connecting node, the upper part of each additional shear steel plate (5) is tightly attached to the bottom surface of the upper precast concrete wallboard (1), the lower part of each additional shear steel plate (5) is fixedly connected with a lower structure,
the inner side of the additional shear steel plate (5) is bonded with the surface of the upper precast concrete wallboard (1) for reinforcement, a vertical slot (7) for the insertion of the additional shear steel plate is arranged on the concrete floor slab (3) corresponding to the position of the additional shear steel plate, a rear plugging material (8) is filled in the vertical slot (7) and around the additional shear steel plate,
the horizontal shear resistant part (6) is a pulling part between the front and rear additional shear resistant steel plates, the horizontal shear resistant part comprises an upper layer shear resistant part (61), an upper layer pore canal (9) for the upper layer shear resistant part (61) to penetrate through is formed in the upper layer precast concrete wallboard, the upper layer pore canal (9) is positioned above the grouting sleeve (4), the upper layer shear resistant part (61) penetrates into the upper layer pore canal (9) and the two ends of the upper layer shear resistant part are pulled to connect the upper parts of the front and rear additional shear resistant steel plates (5), the upper layer shear resistant part (61) is fixedly connected with the upper parts of the additional shear resistant steel plates, and the upper layer pore canal (9) is filled with a rear plugging material (8),
the horizontal shear resistant part (6) further comprises a lower layer shear resistant part (62), a lower layer duct through which the lower layer shear resistant part (62) penetrates is formed in the lower layer structure, the lower layer shear resistant part (62) penetrates into the lower layer duct, two ends of the lower layer shear resistant part are connected with the lower parts of the front and rear side additional shear resistant steel plates (5) in a pulling mode, the lower layer shear resistant part (62) is fixedly connected with the lower parts of the additional shear resistant steel plates, and a rear plugging material (8) is filled in the lower layer duct,
the reinforcement width of the additional shear steel plates (5) is located within the 1/3 area of the wall end of the wall panel connection node,
the outer side surface of the additional shear steel plate (5) protrudes outwards from the outer side surface of the upper precast concrete wallboard (1) and is attached to the outer side surface of the upper precast concrete wallboard, or the outer side surface of the upper precast concrete wallboard (1) is provided with an upper groove for the additional shear steel plate (5) to be placed in by avoiding the positions of the steel bars and the grouting sleeve, and the outer side surface of the upper precast concrete wallboard (1) is flush with the outer side surface of the additional shear steel plate (5).
2. The grout sleeve connection concrete reinforcement structure of claim 1, wherein: the concrete floor slab is characterized in that the vertical slots (7) are not communicated and are slotted to the lower part of the slab body of the concrete floor slab (3), the lower ends of the additional shear-resistant steel plates (5) are inserted into the vertical slots (7), and the lower-layer pore channels are floor pore channels (14) which are formed in the concrete floor slab (3) and are used for allowing the lower-layer shear-resistant pieces (62) to penetrate through.
3. The grout sleeve connection concrete reinforcement structure of claim 1, wherein: vertical slot (7) link up concrete floor (3), the lower extreme of additional shear steel sheet (5) passes vertical slot (7) and its lower part is hugged closely and is extended to the top surface of lower floor concrete wallboard (2), lower floor's pore is lower floor's wallboard pore (10) that lower floor's shear-resistant member (62) of confession run through for lower floor's concrete wallboard goes up to open, the inboard of additional shear steel sheet (5) is consolidated with the surface bonding steel of lower floor concrete wallboard (2).
4. The grout sleeve connection concrete reinforcement structure of claim 3, wherein: the outside surface evagination of additional shear steel sheet (5) in the outside surface of lower floor's precast concrete wallboard (1) and rather than the laminating, perhaps the outside surface of lower floor's precast concrete wallboard (2) avoids reinforcing bar and grout sleeve position to open and has the lower floor's recess that supplies additional shear steel sheet (5) to put into, the outside surface of lower floor's precast concrete wallboard (2) and the outside surface parallel and level of additional shear steel sheet (5).
5. A method of constructing a grout sleeve to join a concrete reinforcement structure according to any one of claims 1 to 4, wherein the construction steps are as follows:
firstly, processing and manufacturing an additional shear steel plate (5) and a horizontal shear part (6) in a factory;
step two, performing surface treatment on the upper precast concrete wallboard (1) at the reinforced part to expose stones and avoid manufacturing an upper layer pore passage (9) and a lower layer pore passage by using reinforcing steel bars;
step three, performing surface treatment on the concrete floor slab at the reinforced part to expose stones and avoid manufacturing vertical slots (7) by using reinforcing steel bars;
step four, installing an additional shear-resistant steel plate (5), enabling an upper layer shear-resistant part (61) to penetrate through an upper layer duct (9), enabling a lower layer shear-resistant part (62) to penetrate through a lower layer duct, and then fixedly connecting the upper layer shear-resistant part (61) and the lower layer shear-resistant part (62) with the additional shear-resistant steel plate;
fifthly, pouring a rear plugging material (8) in the vertical slot (7); the upper layer pore canal (9) and the lower layer pore canal are also filled with a rear plugging material (8);
and step six, curing the plugging material (8) to a preset strength.
6. The construction method of a grout sleeve connection concrete reinforcing structure according to claim 5, wherein: and in the second step, an upper layer groove is constructed, and an additional shear-resistant steel plate (5) is arranged in the upper layer groove.
7. The construction method of a grout sleeve to connect a concrete reinforcing structure according to claim 5 or 6, wherein: the following steps are added:
in the second step, the surface of the lower layer concrete wallboard (2) at the reinforced part is also treated to expose stones and avoid the steel bars to manufacture a lower layer pore canal (10);
in the fourth step, an additional shear-resistant steel plate (5) is installed, and the lower layer shear-resistant piece (62) penetrates through the lower layer duct (10) to be anchored;
in the fifth step, plugging the lower layer pore canal (10) and filling the plugging material (8);
8. the construction method of a grout sleeve connection concrete reinforcing structure according to claim 7, wherein: and in the second step, a lower-layer groove is constructed, and an additional shear-resistant steel plate (5) is arranged in the lower-layer groove.
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