CN115749036A - Take assembled concrete shear wall structure of anchor plate reinforcing bar overlap joint - Google Patents
Take assembled concrete shear wall structure of anchor plate reinforcing bar overlap joint Download PDFInfo
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- CN115749036A CN115749036A CN202211087664.7A CN202211087664A CN115749036A CN 115749036 A CN115749036 A CN 115749036A CN 202211087664 A CN202211087664 A CN 202211087664A CN 115749036 A CN115749036 A CN 115749036A
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- 239000004567 concrete Substances 0.000 title claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 221
- 239000010959 steel Substances 0.000 claims abstract description 221
- 238000004873 anchoring Methods 0.000 claims abstract description 45
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 26
- 230000001965 increasing effect Effects 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 35
- 239000011150 reinforced concrete Substances 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 8
- 210000001503 joint Anatomy 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides an assembled concrete shear wall structure with an anchoring plate and steel bars in lap joint connection, which comprises an upper shear wall unit and a lower shear wall unit; upper section steel is embedded in the upper shear wall unit; the end part of the outward extending section of the upper section steel is provided with an upper end plate; lower section steel is embedded in the lower shear wall unit; the end part of the outward extending section of the lower section steel is provided with a lower end plate; the end part of the upper reinforcing steel bar overhanging section is fixedly provided with an upper anchoring plate; the end part of the lower steel bar overhanging section is fixedly provided with a lower anchoring plate; the buckle also comprises a first buckle plate; the first buckle plate comprises a connecting hole and a wedge-shaped connecting groove; during connection, the connecting hole is sleeved on the tail part of the extending section of the lower reinforcing steel bar, and the extending section of the upper reinforcing steel bar slides into the wedge-shaped connecting groove by rotating the first buckle plate; the center line of the wedge-shaped connecting groove is in an involute form with the gradually increased center radius of the connecting hole. The invention greatly improves the shearing resistance and the tensile resistance between the two concrete units, is convenient to implement and popularize, and has simple operation and high efficiency.
Description
Technical Field
The invention relates to the technical field of green energy-saving building engineering, in particular to an assembled concrete shear wall structure with an anchoring plate and steel bars in lap joint connection.
Background
Because shear wall structures are adopted in large quantities in middle and high-rise buildings in China, particularly residential buildings with great construction demands, the assembled reinforced concrete shear wall structure is the key point of the current development of China, and various representative assembled reinforced concrete shear wall structure technical systems are formed.
At present, the connection mode of reinforcing steel bars in the assembled reinforced concrete shear wall structure in China mainly comprises a grouting sleeve and a constraint grout anchor. Although related researches show that the modes of sleeve grouting, slurry anchor restraint and the like can meet the requirement of equal cast-in-place, the two connection modes have disadvantages in the aspects of cost, precision, construction efficiency, construction quality and the like, and the development of the prefabricated reinforced concrete shear wall structure is restricted. The concrete expression is as follows: 1. the requirement on machining precision is high, the construction difficulty is high, and the efficiency is low. The common connection modes of a grouting sleeve, a constraint slurry anchor and the like for the steel bars in the prefabricated reinforced concrete shear wall structure have higher requirements on the processing precision of the prefabricated reinforced concrete shear wall, the positions of the steel bars have slight deviation, and the on-site steel bars are difficult to penetrate into the sleeve or the reserved hole channel. Meanwhile, as the number of the steel bars of the shear wall is large, and the steel bars are operated aloft, the precision requirement on site construction is extremely high, dozens of or even dozens of steel bars are simultaneously penetrated into the prefabricated reinforced concrete shear wall steel bar sleeve just like holding a few heavy object threading leads in the air, so that a series of specific problems and implementation costs of large construction difficulty, high labor cost of professional teams, high measure cost, waste parts, broken bars and the like are caused. The fabricated building has the advantages that the on-site construction efficiency can be improved, however, due to the fact that the prefabricated parts are not high in machining precision, lack of industrial workers, high in construction difficulty and the like, the fabricated concrete shear wall structure is often slower than a cast-in-place structure in construction speed in actual engineering. 2. Grouting connection is concealed engineering and has high quality assurance difficulty. After the overhanging reinforcing steel bars of the lower prefabricated reinforced concrete shear wall penetrate into the reserved sleeves or the channels of the upper prefabricated reinforced concrete shear wall, high-strength grouting material needs to be poured into the prefabricated reinforced concrete shear wall. Moreover, there is currently no effective means to detect the quality of the grout.
Disclosure of Invention
The invention aims to provide an assembled concrete shear wall structure with an anchor plate and a steel bar lap joint, and aims to solve at least one technical problem in the prior art. The application is divisional application of patents with application numbers of 2022106692424, application date of 2022, 6 months and 14 days, and the name of the application is 'an assembled reinforced concrete shear wall structure and a prefabricated shear wall unit'.
In order to solve the technical problem, the invention provides an assembled concrete shear wall structure with an anchor plate and steel bars in lap joint connection, which comprises: the upper shear wall unit and the lower shear wall unit;
upper section steel is embedded in the upper shear wall unit; the upper section steel extending section extends out of the connecting end of the upper shear wall unit, and an upper end plate is arranged at the end part of the upper section steel extending section;
lower section steel is embedded in the lower shear wall unit; the lower section steel extending section extends out from the connecting end of the lower shear wall unit, and the end part of the lower section steel extending section is provided with a lower end plate;
the upper shear wall unit and the lower shear wall unit are butted, the upper end plate and the lower end plate are fixedly connected, and the upper section steel and the lower section steel further form an integrally arranged bearing framework;
and concrete is poured between the upper shear wall unit and the lower shear wall unit to form a cast-in-place concrete unit.
Preferably, the upper end plate and the lower end plate are provided with bolt holes, and the upper end plate and the lower end plate are fixedly connected through bolts. The connection can of course also be fixed by welding or riveting.
Furthermore, upper reinforcing steel bars are embedded in the upper shear wall units, and the extending sections of the upper reinforcing steel bars extend out of the connecting ends of the upper shear wall units; the end part of the upper steel bar overhanging section is fixedly provided with an upper anchoring plate;
lower reinforcing steel bars are embedded in the lower shear wall units, and the outer extending sections of the lower reinforcing steel bars extend out of the connecting ends of the lower shear wall units; the end part of the lower steel bar overhanging section is fixedly provided with a lower anchoring plate;
when the upper shear wall unit is in butt joint with the lower shear wall unit, the upper steel bar overhanging section and the lower steel bar overhanging section are indirectly lapped and arranged and are embedded in the cast-in-place concrete unit.
Further, the upper anchoring plate is perpendicular to the upper steel bar extending section; the lower anchoring plate is perpendicular to the lower steel bar overhanging section.
Furthermore, the upper anchoring plate and the lower anchoring plate are square, rhombic or circular plate bodies.
Preferably, the areas (plate surfaces) of the upper anchoring plate and the lower anchoring plate are respectively larger than or equal to 6 times of the cross-sectional areas of the upper reinforcing steel bar and the lower reinforcing steel bar.
Furthermore, the surfaces of the connecting end surfaces of the upper shear wall unit and the lower shear wall unit are subjected to roughening treatment, so that the connectivity between the upper shear wall unit and the cast-in-place concrete unit and the connectivity between the lower shear wall unit and the cast-in-place concrete unit are enhanced.
Furthermore, restraint stirrups or steel reinforcement frameworks are arranged in the cast-in-place concrete unit and on the peripheries of the upper steel bar overhanging section and the lower steel bar overhanging section.
The restraint stirrup form can be a rectangular stirrup or a spiral stirrup, the stirrup plays a restraint role in the concrete in the lap joint area, the anchoring performance of the steel bar in the cast-in-place concrete unit can be improved, and therefore the force transmission performance of the steel bar connection joint is improved. The distance between the stirrups is within 40-100 mm, so that the requirement of the maximum aggregate particle size of the concrete is met, and the core concrete can be strongly restrained.
Preferably, the spacing between the steel bars of the constraint stirrup or the steel bar framework is within 40-60 mm, so that the requirement of the maximum aggregate particle size of the concrete is met, and the core concrete can be strongly constrained.
Furthermore, the upper shear wall unit and the lower shear wall unit are precast concrete shear walls.
Furthermore, the upper anchoring plate and the lower anchoring plate are respectively fixed on the upper steel bar overhanging section and the lower steel bar overhanging section in a perforation plug welding or thread connection mode.
Furthermore, each upper steel bar overhanging section comprises a plurality of upper anchoring plates which are arranged at intervals along the axial direction;
and/or each lower steel bar overhanging section comprises a plurality of lower anchoring plates arranged at intervals along the axial direction.
2-5 or more anchor plates are arranged along the axial direction of the steel bar, so that the anchoring performance of the steel bar can be further improved, and the force transmission performance of the indirect lap joint steel bar is further improved. The distance between the steel anchorage plates can be designed according to specific engineering conditions to achieve optimum performance.
Further, the steel bar fixing device also comprises spiral steel bars sleeved outside the upper steel bar overhanging section or the lower steel bar overhanging section; one end of a spiral steel bar is embedded in the upper shear wall unit or the lower shear wall unit, and the other end of the spiral steel bar extends out of the end face of the upper shear wall unit or the lower shear wall unit; when the upper shear wall unit is in butt joint with the lower shear wall unit, the lower steel bar overhanging section or the upper steel bar overhanging section is inserted into the spiral steel bar from outside.
After concrete is poured between the upper shear wall unit and the lower shear wall unit, the spiral steel bars are buried in the cast-in-place section concrete units. The spiral steel bars play a role in restraining the concrete in the overlapping area, and the force transmission performance of the steel bar connecting joint is further improved.
Furthermore, the steel bar fixing device also comprises an outer sleeve sleeved outside the upper steel bar overhanging section or the lower steel bar overhanging section; one end of the outer sleeve is embedded in the upper shear wall unit or the lower shear wall unit, and the other end of the outer sleeve extends out of the end face of the upper shear wall unit or the lower shear wall unit; when the upper shear wall unit and the lower shear wall unit are in butt joint, the lower steel bar overhanging section or the upper steel bar overhanging section is inserted into the outer sleeve from outside. The method is used for enhancing the constraint effect on the core concrete of the cast-in-place section concrete unit and further improving the force transmission performance of the steel bar connecting joint.
Further, the outer sleeve is a steel pipe, a metal corrugated pipe or an FRP pipe.
In addition, this application still discloses a precast shear wall unit, it includes: wall and built-in section steel;
the upper end face and the lower end face of the wall body are respectively provided with an overhanging section of the built-in section steel, and the end part of the overhanging section of the built-in section steel is provided with a connecting end plate.
Furthermore, in the height direction, the built-in section steel is arranged along the height direction of the wall body in a full-length mode, and the upper end and the lower end of the built-in section steel respectively extend out of the upper end face and the lower end face of the wall body.
And the built-in section steel can be arranged in the height direction of the wall body in a full-length mode, and only the upper surface and the lower surface of the wall body are embedded inwards to a certain depth, so that the consumption of steel is saved.
Furthermore, the inner section of the built-in section steel in the wall body is provided with a shear connection key; the shear connection keys comprise but are not limited to studs or PBL shear connection keys and the like, and can strengthen the interaction between the built-in section steel and concrete and increase the structural integrity.
Furthermore, the wall body further comprises built-in steel bars, the upper end face and the lower end face of the wall body are respectively provided with an overhanging section of the built-in steel bars, and the end portion of the overhanging section of the built-in steel bars is provided with an anchoring plate.
Furthermore, a plurality of anchoring plates which are arranged at intervals along the axial direction are arranged on the external extending section of the built-in reinforcing steel bar.
Furthermore, spiral steel bars are arranged on the upper end surface or the lower end surface of the wall body; the spiral steel bar is sleeved outside the built-in steel bar; one end of the spiral steel bar is embedded in the wall body, and the other end of the spiral steel bar extends out of the end face of the wall body.
When two adjacent prefabricated shear wall units are in butt joint, the external extending sections of the built-in steel bars of one prefabricated shear wall unit are inserted into the spiral steel bars on the other prefabricated shear wall unit from the outside.
Furthermore, an outer sleeve is arranged on the upper end face or the lower end face of the wall body; the outer sleeve is sleeved outside the built-in steel bar; one end of the outer sleeve is embedded in the wall body, and the other end of the outer sleeve extends out of the end face of the wall body.
When two adjacent prefabricated shear wall units are in butt joint, the external extending sections of the built-in steel bars of one prefabricated shear wall unit are inserted into the outer sleeves of the other prefabricated shear wall unit from the outside.
Further, the outer sleeve is a steel pipe, a metal corrugated pipe or an FRP pipe.
By adopting the technical scheme, the invention has the following beneficial effects:
the assembled reinforced concrete shear wall structure provided by the invention realizes the efficient connection of embedded steel bars of the shear wall; by adopting a cast-in-place construction method, concealed sleeve grouting and constraint slurry anchor grouting engineering are cancelled, the operation is visual, the quality is easy to inspect, and the construction quality of the steel bar joint can be effectively ensured; the construction step of on-site reinforcing steel bar positioning and punching is cancelled, the construction error tolerance is improved, the construction difficulty is reduced, and the construction efficiency is improved.
Has the advantages that:
1. the novel horizontal joint structure of the assembled reinforced concrete shear wall can realize efficient connection of the assembled shear wall units, and has the characteristics of high degree of factory prefabrication and less field wet operation.
2. The steel structure cladding in novel assembled reinforced concrete shear wall structure can improve the fire prevention corrosion resisting property of structure in the concrete, reduces later stage fire prevention anticorrosive construction cost.
3. Compared with the prior art, the novel assembly type reinforced concrete shear wall horizontal joint connection adopts a cast-in-place construction method, concealed grouting engineering is cancelled, and the construction quality of the steel bar connection at the horizontal joint can be effectively guaranteed.
4. Because the hidden grouting engineering is cancelled, the prefabricated part does not need to reserve a grouting hole channel, and the processing cost of the prefabricated part is reduced.
5. The cast-in-place construction method is adopted on site, extra grouting material and professional grouting workers are not needed, and the site construction cost is saved.
6. Contrast prior art, the connection of novel assembled reinforced concrete shear force wall horizontal joint need not the construction steps of on-the-spot reinforcing bar location jack, and the vertical connection of assembled shear force wall unit uses the indirect overlap joint of reinforcing bar as basic configuration form, has improved construction error tolerance, has improved the efficiency of construction.
7. The basic structural form of indirect lapping of the reinforcing steel bars is adopted, the method belongs to a reinforcing steel bar connecting method which is mature in application, the on-site construction experience is mature, the construction quality can be well guaranteed, a series of specific problems of waste parts, broken reinforcing steel bars and the like are improved, the construction efficiency is improved, and the construction cost is also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a prefabricated shear wall unit provided in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of a prefabricated shear wall unit in example 1 of the invention;
FIG. 3 is a schematic structural view of a third embodiment of a prefabricated shear wall unit in example 1 of the invention;
fig. 4 is a schematic structural view of a wall body with steel beams preset in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of an assembled reinforced concrete shear wall structure provided in embodiment 2 of the present invention;
fig. 6 is a partial schematic view of an assembled reinforced concrete shear wall structure provided in embodiment 2 of the present invention;
FIG. 7 is a partial schematic view of a shear wall structure with a restraint stirrup according to embodiment 2 of the present invention;
fig. 8 is a perspective view of a reinforcing bar connection structure in embodiment 3 of the present invention;
FIG. 9 is a schematic structural view of a first gusset plate according to embodiment 3 of the invention;
fig. 10 is a perspective view of a reinforcing bar connecting structure in embodiment 4 of the present invention;
FIG. 11 is a schematic structural view of a first gusset plate according to embodiment 4 of the present invention;
fig. 12 is a perspective view of a reinforcing bar connecting structure in embodiment 5 of the invention.
Reference numerals:
10-a wall body; 20-built-in section steel; 21-an overhanging section of steel; 22-connecting end plates; 30-built-in steel bars; 31-the overhanging section of the reinforcing steel bar; 32-an anchor plate; 40-spiral reinforcing steel bars; 41-an outer sleeve; 42-steel beam; 43-restraint stirrup; 50-a cast-in-place concrete unit; 60-a first buckle plate; 61-connecting hole; 62-a wedge-shaped connecting groove; 63-card slot; 60 a-a second buckle plate; a 64-U shaped elongated slot;
10 a-an upper shear wall unit; 10 b-a lower shear wall unit; 20 a-upper section steel; 21 a-upper profile steel overhanging section; 22 a-upper end plate; 20 b-lower section steel; 21 b-lower profile steel overhanging section; 22 b-lower end plate; 30 a-upper reinforcing steel bars; 31 a-upper reinforcement overhanging section; 32 a-an upper anchor plate; 30 b-lower reinforcing steel bars; 31 b-lower rebar overhanging sections; 32 b-lower anchor plate; 33 b-tail.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "upper", "lower", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a prefabricated shear wall unit, which includes: a wall body 10 and a built-in section steel 20; the upper and lower end surfaces of the wall 10 are respectively provided with a section steel extending section 21 with a section steel 20 inside, and the end part of the section steel extending section 21 is provided with a connecting end plate 22. The connecting end plate 22 is horizontally arranged and used for connecting and fixing the two adjacent walls 10.
In the height direction, the built-in section steel 20 is arranged along the height direction of the wall body 10, and the section steel overhanging sections 21 at the upper and lower ends of the built-in section steel 20 respectively extend out of the upper and lower end faces of the wall body 10. Or, the built-in section steel 20 may not be arranged along the height direction of the wall 10, but only embedded into the upper and lower surfaces of the wall 10 to a certain depth, so as to save the steel consumption. More preferably, the built-in section steel 20 is provided with shear connection keys (not shown) on an inner section inside the wall body 10; shear connectors include, but are not limited to, studs or PBL shear connectors, etc., to enhance the interaction of the inner profile steel 20 with the concrete and increase structural integrity.
The present embodiment further includes a built-in steel bar 30, the upper and lower end surfaces of the wall 10 are respectively provided with steel bar extending sections 31 of the built-in steel bar 30, and the end portions of the steel bar extending sections 31 are provided with anchor plates 32.
The number of the anchor plates 32 per one steel bar overhanging section 31 is set as required, and preferably 2 to 5 anchor plates 32 are provided at intervals in the axial direction.
On the basis of the above technical solution, optionally and more preferably, as shown in fig. 2, the upper end surface or the lower end surface of the wall 10 is further provided with a spiral steel bar 40; the spiral steel bar 40 is sleeved outside the built-in steel bar 30; one end of the spiral steel bar 40 is embedded in the wall 10, and the other end of the spiral steel bar 40 extends out of the end face of the wall 10. When two adjacent prefabricated shear wall units are butted, the steel bar overhanging sections 31 of one prefabricated shear wall unit are inserted into the spiral steel bars 40 on the other prefabricated shear wall unit from outside.
Or, on the basis of the above technical solution, optionally and more preferably, as shown in fig. 3, the upper end surface or the lower end surface of the wall 10 is further provided with an outer sleeve 41; the outer sleeve 41 is sleeved outside the built-in steel bar 30; one end of the outer sleeve 41 is embedded in the wall 10, and the other end of the outer sleeve 41 extends out of the end face of the wall 10. When two adjacent prefabricated shear wall units are butted, the steel bar overhanging sections 31 of one prefabricated shear wall unit are inserted into the outer sleeves 41 of the other prefabricated shear wall unit from outside. The outer sleeve 41 is a steel pipe, a metal corrugated pipe or an FRP pipe.
Referring to fig. 4, it is more preferable that steel beams 42 are preset in the wall 10, and the steel beams 42 extend from the left and right sides of the wall 10, and can be used for the fixed connection between the walls 10 arranged side by side left and right, or the connection and fixation between the wall 10 and the frame beams are facilitated, and can also be connected with a concrete floor to form a composite floor structure. Among them, it is preferable that the steel beam 42 penetrates the wall 10 in a horizontal direction, thereby enhancing the strength of the entire wall 10.
The novel horizontal joint structure of the assembled reinforced concrete shear wall can realize efficient connection of the assembled shear wall units, and has the characteristics of high degree of factory prefabrication and less field wet operation. Compared with the prior art, the novel assembly type reinforced concrete shear wall horizontal joint connection adopts a cast-in-place construction method, hidden grouting engineering is omitted, and the construction quality of steel bar connection at the horizontal joint can be effectively guaranteed. And because the hidden grouting engineering is cancelled, the prefabricated part does not need to reserve a grouting channel, and the processing cost of the prefabricated part is reduced.
Example 2
Referring to fig. 5 and 6, the present embodiment discloses an assembled reinforced concrete shear wall structure, including: an upper shear wall unit 10a and a lower shear wall unit 10b.
Preferably, the upper end plate 22a and the lower end plate 22b are provided with bolt holes, and the two are fixedly connected by bolts. The connection can of course also be fixed by welding or riveting.
More preferably, the upper steel bars 30a are embedded in the upper shear wall unit 10a, and the upper steel bar overhanging sections 31a protrude from the connecting ends of the upper shear wall unit 10 a; the end part of the upper steel bar overhanging section 31a is fixedly provided with an upper anchoring plate 32a; a lower steel bar 30b is embedded in the lower shear wall unit 10b, and a lower steel bar overhanging section 31b extends out from the connecting end of the lower shear wall unit 10 b; the end part of the lower steel bar overhanging section 31b is fixedly provided with a lower anchoring plate 32b; when the upper shear wall unit 10a and the lower shear wall unit 10b are butted, the upper steel bar overhanging section 31a and the lower steel bar overhanging section 31b are indirectly overlapped and arranged and buried in the cast-in-place concrete unit 50.
Wherein, the upper anchoring plate 32a is arranged perpendicular to the upper steel bar overhanging section 31 a; the lower anchoring plate 32b is disposed perpendicular to the lower reinforcement overhanging section 31 b. The upper anchor plate 32a and the lower anchor plate 32b are square, diamond-shaped, or circular plate bodies. Preferably, the areas (plate surfaces) of the upper anchor plate 32a and the lower anchor plate 32b are 6 times or more the cross-sectional areas of the upper reinforcement 30a and the lower reinforcement 30b, respectively. And roughening the surfaces of the connection end surfaces of the upper shear wall unit 10a and the lower shear wall unit 10b to enhance the connectivity with the upper shear wall unit 10a and the lower shear wall unit 10b and the cast-in-place concrete unit 50.
Preferably, the present embodiment further comprises a spiral steel bar 40 sleeved outside the upper steel bar extension section 31a or the lower steel bar extension section 31 b; one end of the spiral steel bar 40 is embedded in the upper shear wall unit 10a or the lower shear wall unit 10b, and the other end of the spiral steel bar 40 extends out of the end face of the upper shear wall unit 10a or the lower shear wall unit 10 b; when the upper shear wall unit 10a and the lower shear wall unit 10b are butted, the lower reinforcement overhanging section 31b or the upper reinforcement overhanging section 31a is inserted into the spiral reinforcement 40 from the outside. After concrete is poured between the upper shear wall unit 10a and the lower shear wall unit 10b, the spiral steel bars 40 are buried in the cast-in-place section concrete units. The spiral reinforcing steel bars 40 play a role in restraining the concrete in the lap joint area, and the force transmission performance of the reinforcing steel bar connecting joint is further improved. Referring to fig. 4, the reinforcing spiral 40 may be replaced with an outer sleeve 41 in the form of a steel pipe, a metal corrugated pipe, an FRP pipe, or the like.
Referring to fig. 7, optionally, restraint stirrups 43 (or a steel reinforcement cage) are provided in the cast-in-place concrete unit 50 and at the periphery of the upper and lower bar-extending sections 31a and 31 b. The restraint stirrup 43 can be a rectangular stirrup or a spiral stirrup, and the stirrup plays a restraint role in the concrete in the lap joint area, so that the anchoring performance of the steel bar in the cast-in-place concrete unit 50 can be improved, and the force transmission performance of the steel bar connection joint is improved. The distance between the stirrups is within 40 mm-100 mm, so that the requirement of the maximum aggregate particle size of the concrete is met, and the core concrete can be strongly restrained. Preferably, the spacing between the restraint stirrups 43 or the steel bars of the steel bar framework is within 40-60 mm, so that the requirement of the maximum aggregate particle size of the concrete is met, and the core concrete can be strongly restrained.
The upper anchoring plate 32a and the lower anchoring plate 32b are fixed on the upper steel bar overhanging section 31a and the lower steel bar overhanging section 31b respectively in a perforation plug welding or thread connection mode. Each upper steel bar overhanging section 31a can comprise a plurality of upper anchoring plates 32a arranged at intervals along the axial direction; each lower outwardly extending reinforcement bar segment 31b may include a plurality of lower anchor plates 32b arranged at intervals in the axial direction. For example, 2-5 or more anchor plates are arranged along the axial direction of the steel bar, so that the anchoring performance of the steel bar can be further improved, and the force transmission performance of the indirectly overlapped steel bar is further improved. The distance between the steel anchorage plates can be designed according to specific engineering conditions to achieve optimum performance.
The assembled reinforced concrete shear wall structure provided by the invention realizes the efficient connection of embedded steel bars of the shear wall; by adopting a cast-in-place construction method, concealed sleeve grouting and constraint slurry anchor grouting engineering are cancelled, the operation is visual, the quality is easy to inspect, and the construction quality of the steel bar joint can be effectively ensured; the construction step of on-site steel bar positioning and punching is cancelled, the construction error tolerance is improved, the construction difficulty is reduced, and the construction efficiency is improved.
Example 3
This example is substantially the same as example 2, except that:
referring to fig. 8, the present embodiment further includes a first buckle 60 for connecting two adjacent upper steel bar extensions 31a and lower steel bar extensions 31 b.
Referring to fig. 9, the first gusset 60 includes a connecting hole 61 and a wedge-shaped connecting groove 62 (a connecting groove with a larger opening). The lower steel bar overhanging section 31b (or the upper steel bar overhanging section 31 a) is provided with a protruding tail part 33b on the outer side of the lower anchoring plate 32b (or the upper anchoring plate 32 a), during connection, the connecting hole 61 is sleeved on the tail part 33b of the lower steel bar overhanging section 31b, the upper steel bar overhanging section 31a slides into the wedge-shaped connecting groove 62 by rotating the first buckle plate 60, the central line of the wedge-shaped connecting groove 62 is in an involute form gradually increasing by the central radius of the connecting hole 61, the wedge-shaped connecting groove 62 has a large opening and a narrow groove bottom, the upper steel bar overhanging section 31a is gradually clamped or is abutted against one side wall of the wedge-shaped connecting groove 62 in the process of sliding into the wedge-shaped connecting groove 62, so that the upper steel bar overhanging section 31a and the lower steel bar overhanging section 31b are rigidly connected in the transverse direction, and the transmission capacity of the shearing force of the two is increased.
And the side walls at the left side and the right side of the wedge-shaped connecting groove 62 are provided with clamping grooves 63 at intervals, and after the upper steel bar extending section 31a slides into the clamping grooves 63, the upper steel bar extending section 31a is further locked, so that the connecting strength of the two is improved.
Example 4
This example is substantially the same as example 3, except that:
referring to fig. 10, the present embodiment includes a second buckle plate 60a for connecting two adjacent upper and lower steel bar extensions 31a and 31 b. Both ends of the second gusset plate 60a are respectively clamped between the two upper anchor plates 32a and the two lower anchor plates 32b. Thereby realizing rigid or semi-rigid connection of the upper steel bar overhanging section 31a and the lower steel bar overhanging section 31b in the axial direction, and further increasing the connecting force of the upper concrete unit and the lower concrete unit.
Referring to fig. 11, the second buckle plate 60a includes two U-shaped long grooves 64 which are perpendicular to each other, and the two U-shaped long grooves 64 which are perpendicular to each other make the second buckle plate 60a of this embodiment have very large versatility, so that even if the distance between the upper steel bar extending section 31a and the lower steel bar extending section 31b varies greatly, the same second buckle plate 60a can be used to quickly connect the two adjacent upper steel bar extending sections 31a and the lower steel bar extending section 31 b.
Example 5
Referring to fig. 12, in this embodiment, two adjacent upper steel bar extending sections 31a and lower steel bar extending sections 31b are directly connected through the first buckle plate 60 and the second buckle plate 60a.
Two upper anchoring plates 32a are arranged on the upper reinforcing steel bar overhanging section 31a at intervals; the lower steel bar extending section 31b is provided with lower anchoring plates 32b arranged at intervals, the outer side of the lower anchoring plate 32b of the lower steel bar extending section 31b is provided with a tail 33b, one end of the first buckle plate 60 is sleeved on the tail 33b of the lower steel bar extending section 31b through a connecting hole 61, and the other end of the first buckle plate 60 is connected with the upper steel bar extending section 31a through a wedge-shaped connecting groove 62.
The second buckle plate 60a is connected to the upper steel bar extending section 31a and the lower steel bar extending section 31b through U-shaped long slots 64 at two ends, and the two ends of the second buckle plate 60a are clamped between the two upper anchor plates 32a and the two lower anchor plates 32b.
This embodiment has had the advantage of the connection structure of embodiment 4 and 5 concurrently, very big improvement two concrete unit between shear capacity and tensile ability, and be convenient for implement and promote, easy operation, it is efficient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a take assembled concrete shear wall structure of anchor slab reinforcing bar overlap joint, its characterized in that includes: the upper shear wall unit and the lower shear wall unit;
upper section steel is embedded in the upper shear wall unit; the upper section steel extending section extends out of the connecting end of the upper shear wall unit, and an upper end plate is arranged at the end part of the upper section steel extending section;
lower section steel is embedded in the lower shear wall unit; the lower section steel overhanging section stretches out of the connecting end of the lower shear wall unit, and the end part of the lower section steel overhanging section is provided with a lower end plate;
the upper shear wall unit and the lower shear wall unit are butted, the upper end plate and the lower end plate are fixedly connected, and the upper section steel and the lower section steel further form an integrally arranged bearing framework;
concrete is poured between the upper shear wall unit and the lower shear wall unit to form a cast-in-place concrete unit;
upper steel bars are embedded in the upper shear wall units, and the outer extending sections of the upper steel bars extend out from the connecting ends of the upper shear wall units; the end part of the upper steel bar overhanging section is fixedly provided with an upper anchoring plate;
lower reinforcing steel bars are embedded in the lower shear wall units, and the outer extending sections of the lower reinforcing steel bars extend out of the connecting ends of the lower shear wall units; the end part of the lower steel bar overhanging section is fixedly provided with a lower anchoring plate;
when the upper shear wall unit and the lower shear wall unit are butted, the upper steel bar overhanging section and the lower steel bar overhanging section are indirectly lapped and arranged and are embedded in the cast-in-place concrete unit;
the first buckle plate is used for connecting the two adjacent upper steel bar extending sections and the lower steel bar extending sections; the first buckle plate comprises a connecting hole and a wedge-shaped connecting groove; the lower steel bar extending section is provided with a protruding tail part on the outer side of the lower anchoring plate, when the lower steel bar extending section is connected with the lower anchoring plate, the connecting hole is sleeved on the tail part of the lower steel bar extending section, and the upper steel bar extending section slides into the wedge-shaped connecting groove by rotating the first buckle plate;
the center line of the wedge-shaped connecting groove is in an involute form with the gradually increased center radius of the connecting hole.
2. The shear wall structure of claim 1, wherein the dovetail connector slot has a large opening and a narrow slot bottom, and the upper rib overhang is gradually clamped or urged against a side wall of the dovetail connector slot as it slides into the dovetail connector slot.
3. The shear wall structure of claim 1, wherein the wedge-shaped connecting grooves are provided with clamping grooves at intervals on the left and right side walls, and the upper reinforcement overhanging sections are further locked after being slid into the clamping grooves.
4. The shear wall structure of claim 1, further comprising a second buckle plate for connecting the two adjacent upper and lower steel bar extending sections; two ends of the second buckle plate are respectively clamped between the two upper anchoring plates and the two lower anchoring plates.
5. The shear wall structure of claim 4, wherein the second clip comprises two U-shaped elongated slots disposed perpendicular to each other.
6. The shear wall structure of claim 4, wherein two adjacent upper and lower reinforcement overhanging sections are directly connected by the first and second gusset plates;
two upper anchoring plates are arranged on the upper reinforcing steel bar overhanging section at intervals; the lower steel bar overhanging section is provided with lower anchoring plates which are arranged at intervals, the outer side of the lower anchoring plate is provided with a tail part of the lower steel bar overhanging section, one end of the first buckle plate is sleeved on the tail part of the lower steel bar overhanging section through a connecting hole, and the other end of the first buckle plate is connected with the upper steel bar overhanging section through a wedge-shaped connecting groove;
the second buckle plate is respectively connected with the upper steel bar extending section and the lower steel bar extending section through the U-shaped long grooves at the two ends, and the two ends of the second buckle plate are respectively clamped between the two upper anchoring plates and the two lower anchoring plates.
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| CN202211087664.7A CN115749036A (en) | 2022-06-14 | 2022-06-14 | Take assembled concrete shear wall structure of anchor plate reinforcing bar overlap joint |
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| CN202211087664.7A CN115749036A (en) | 2022-06-14 | 2022-06-14 | Take assembled concrete shear wall structure of anchor plate reinforcing bar overlap joint |
| CN202210669242.4A CN114737699B (en) | 2022-06-14 | 2022-06-14 | Assembled reinforced concrete shear wall structure and prefabricated shear wall unit |
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| CN114197629A (en) * | 2021-12-03 | 2022-03-18 | 湖北理工学院 | Assembly wallboard connecting mechanism based on assembly type building |
| CN115142553B (en) * | 2022-07-18 | 2023-07-18 | 山东大学 | Multi-layer assembled concrete slab type structure house and installation method thereof |
| CN115263014A (en) * | 2022-08-15 | 2022-11-01 | 中国二十二冶集团有限公司 | Plugging and reinforcing method for cantilever I-shaped steel reserved hole of fabricated shear wall |
| CN115506534B (en) * | 2022-09-30 | 2023-09-19 | 青岛嘉枫城市建设有限公司 | Shear wall structure and building |
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| CN203462615U (en) * | 2013-08-20 | 2014-03-05 | 浙江精工钢结构集团有限公司 | Prefabricated, assembled and integral type shear wall and connecting node thereof |
| CN205712568U (en) * | 2016-05-10 | 2016-11-23 | 上海理工大学 | Vertical connection structure between the precast shear wall of reinforced concrete earth cooperation shearing resistance |
| CN106760052A (en) * | 2016-12-20 | 2017-05-31 | 华南理工大学建筑设计研究院 | A kind of horizontal piece steel welding of prefabricated shear wall connection device in succession |
| CN107989228B (en) * | 2017-12-20 | 2023-06-20 | 中冶建筑研究总院有限公司 | Prefabricated steel reinforced concrete shear wall structure and preparation and installation methods thereof |
| KR102177360B1 (en) * | 2018-10-30 | 2020-11-11 | 삼표피앤씨(주) | Precast concrete double wall for constructing shear wall, method for manufacturing the same and method for constructing shear wall using the same |
| CN109680835B (en) * | 2019-02-15 | 2024-03-22 | 姚攀峰 | Self-supporting precast concrete wallboard, concrete wall, structural system and construction method |
| CN112942632A (en) * | 2021-03-31 | 2021-06-11 | 常州金构智建科技有限公司 | Easy-to-process, assemble and decorate steel beam shear wall system with good stress |
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