CN211572710U - Prefabricated high-ductility concrete reinforcing device for masonry brick column - Google Patents
Prefabricated high-ductility concrete reinforcing device for masonry brick column Download PDFInfo
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- CN211572710U CN211572710U CN201922442452.6U CN201922442452U CN211572710U CN 211572710 U CN211572710 U CN 211572710U CN 201922442452 U CN201922442452 U CN 201922442452U CN 211572710 U CN211572710 U CN 211572710U
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Abstract
The utility model discloses a prefabricated high-ductility concrete reinforcing device for masonry brick columns, which comprises a high-ductility concrete layer, a plurality of steel bar units pre-buried in the high-ductility concrete layer, a bonding material layer and anchoring parts; the whole shape of the high-ductility concrete layer is an annular shape matched with the external contour of the masonry brick column; the high-ductility concrete layer is provided with a preformed hole for penetrating through the anchoring piece; the plurality of steel bar units are sequentially arranged along the height direction of the masonry brick column; the bonding material layer sets up between high ductility concrete layer and the brickwork brick post of waiting to consolidate. The utility model discloses the used material of device is for adopting high ductility concrete, reinforcing bar, anchor assembly and bonding material, and material (combined material, chemical agent etc.) more in the past acquires more easily, and the practicality is strong. And the high-ductility concrete has high toughness, high crack resistance and high damage resistance, and can effectively improve the seismic performance of the member by matching with the reinforcing steel bars, the anchoring parts and the bonding materials.
Description
Technical Field
The utility model belongs to the technical field of building structure antidetonation and reinforcement, concretely relates to prefabricated high-ductility concrete reinforcing apparatus of brickwork brick post.
Background
Masonry is a long-standing building material and is widely applied to the infrastructure of China. In masonry structures, the corridor is often supported by brick columns. Under the earthquake action of the brick column, the upper and lower sections of the column bear large bending moment. The masonry has extremely poor tensile and bending resistance, and under the action of an earthquake, brick columns are very easy to collapse, so that the corridor of the corridor falls and collapses, and the escape passage is cut off. Meanwhile, in old buildings, the service life of the brick column exceeds the design life, and the problem of insufficient bearing capacity is caused. The past earthquake damage of China in the last decade indicates that brick columns are not easy to survive in strong earthquake, and earthquake resistance reinforcement is urgently needed to improve the earthquake resistance and the pressure capacity of the brick columns.
The traditional reinforcement methods at present comprise a surrounding sleeve reinforcement method, an external steel wrapping reinforcement method, a bonded steel reinforcement method and the like. The enclosure reinforcing method has the problems of complex construction process, long processing period, large wet operation amount and serious environmental pollution; the steel-wrapped reinforcement method and the steel-bonded reinforcement method have serious problems of fire prevention and corrosion prevention, the structural adhesive has poor weather resistance, and the brick column is located outdoors for a long time, is greatly influenced by air and sunlight and is very easy to take effect; the steel structure has the problems of poor fire resistance and corrosion resistance, and the material is easy to rust to cause reinforcement failure when the steel structure is outdoors for a long time.
Disclosure of Invention
In order to solve the problem, the utility model provides a prefabricated high-ductility concrete reinforcing apparatus of brickwork brick post solves current brickwork wall and consolidates method and device and easily receives the problem of environmental impact, construction cycle length.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a prefabricated high-ductility concrete reinforcing device for masonry brick columns comprises a high-ductility concrete layer, a plurality of steel bar units, a bonding material layer and anchoring pieces, wherein the steel bar units are pre-embedded in the high-ductility concrete layer; the whole shape of the high-ductility concrete layer is an annular shape matched with the external contour of the masonry brick column; the high-ductility concrete layer is provided with a preformed hole for penetrating through the anchoring piece; the plurality of steel bar units are sequentially arranged along the height direction of the masonry brick column; the steel bar units are annular structures which are formed by splicing two U-shaped steel bars and are circumferentially arranged around the high-ductility concrete layer; the binding material layer set up in high ductility concrete layer and treat between the reinforcement brickwork brick post.
Specifically, the high-ductility concrete layer is formed by splicing two U-shaped high-ductility concrete layer units, and notches are formed in the inner sides of the opening edges of the high-ductility concrete layer units; and the binding material is poured in a gap between the high-ductility concrete layer and the masonry brick column to form the binding material layer.
Preferably, the thickness of high ductility concrete layer unit be 20 ~ 40mm, the thickness that sets up notch department is 5 ~ 10 mm.
Furthermore, two ends of U shaped steel muscle be provided with the bending segment, two U shaped steel muscle in every reinforcing bar unit are arranged along brickwork brick column direction of height to the straggly, and the mutual crisscross square frame structure that forms of the bending segment of two U shaped steel muscle.
Preferably, the distance between two U-shaped steel bars on the same side in adjacent steel bar units is 100-300 mm.
Preferably, the thickness of the bonding material layer is 5-10 mm.
Preferably, the distance between adjacent preformed holes is 100-500 mm, and the diameter of the preformed holes is 8-14 mm.
Specifically, the anchoring piece is a collision bolt or a threaded steel bar.
Furthermore, fiber mesh cloth is arranged in the high-ductility concrete layer; the number of the layers of the fiber mesh cloth is 1-3; the distance between the bundles of the fiber mesh cloth is 5-30 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses the used material of device is for adopting high ductility concrete, reinforcing bar, anchor assembly and bonding material, and material (combined material, chemical agent etc.) more in the past acquires more easily, and the practicality is strong. And the high-ductility concrete has high toughness, high crack resistance and high damage resistance, and can effectively improve the seismic performance of the member by matching with the reinforcing steel bars, the anchoring parts and the bonding materials.
(2) The reinforcing device of the utility model is a prefabricated part, the prefabricated high-ductility concrete slabs are assembled on site, and after being fixed by a rear anchoring part, the bonding material is directly poured; the assembling and grouting construction process is simple and mature, the requirement on constructors is low, common constructors can complete the assembling and grouting construction process, technical personnel with strong specialty are not needed, and rapid reinforcing and strengthening can be achieved. The prefabricated mode is produced, and the quality is guaranteed, but batch production, can booking, and the on-the-spot wet work roof beam significantly reduces, and is little to environmental pollution.
(3) After the reinforcement, the wall surface is smooth without manual leveling, and the use function and the building look of the structure are not influenced.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
Fig. 1 is a plan view of a reinforcing device according to an embodiment of the present invention.
Fig. 2 is a top view of a precast high ductility concrete panel.
Fig. 3 is a sectional view taken along line a-a of fig. 1.
Fig. 4 is a cross-sectional view of fig. 1 taken along line C-C.
Fig. 5 is a sectional view taken along line B-B of fig. 1.
Fig. 6 is a schematic view of embedded steel bars.
Fig. 7 is a schematic view of a fiber mesh cloth.
The reference numerals in the figures denote:
1-a high-ductility concrete layer, 2-a steel bar unit, 3-a binding material layer, 4-an anchoring piece, 5-masonry brick columns and 6-fiber gridding cloth;
101-high-ductility concrete layer unit, 102-notch, 103-preformed hole;
201-U-shaped steel bar, 202-bending section and 203-square frame structure.
The following detailed description of the present invention is provided in connection with the accompanying drawings and the detailed description of the invention.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
In the present invention, unless otherwise specified, the terms of orientation such as "upper and lower" are generally defined with reference to the drawing plane of the corresponding drawing, and "inner and outer" are defined with reference to the outline of the corresponding drawing.
As shown in fig. 1, the embodiment of the utility model provides a prefabricated high-ductility concrete reinforcing apparatus of brickwork brick post records, include around 5 circumferences of brickwork brick post set up high-ductility concrete layer 1, pre-buried a plurality of reinforcing bar units 2 in high-ductility concrete layer 1, adhesive material layer 3 and anchor assembly 4, wherein anchor assembly 4 is used for fixing this reinforcing apparatus outside waiting to consolidate the brickwork brick post.
The whole shape of the high-ductility concrete layer 1 is an annular shape matched with the external outline of the masonry brick column 5; the annular size is prefabricated according to the size of original structure brick post, guarantees to have the clearance that is used for pouring the binder between high ductility concrete layer 1 and the brick post, and the binder is pour and is formed binder layer 3 in the clearance between high ductility concrete layer 1 and brickwork brick post 5.
As the utility model discloses a preferred scheme, high ductility concrete layer 1 is formed by the high ductility concrete layer unit 101 concatenation of two U types, as shown in fig. 2, notch 102 has been seted up to high ductility concrete layer unit 101's opening edge inboard for the high ductility concrete layer thickness of here is thinner. The thickness of the bonding material layer 3 at the notch 102 is increased so that the thickness of the bonding material layer 3 is not uniform, increasing the connection strength of the bonding material layer 3 with the high-ductility concrete layer 1. In the present embodiment, the thickness t of the high-ductility concrete layer unit 1011Is 20-40 mm, and the thickness S of the notch 102 is set335-10 mm.
The high-ductility concrete layer 1 is provided with a prepared hole 103 for passing through the anchor 4. The utility model discloses an in the embodiment, the diameter of preformed hole 103 is 8 ~ 14mm, and the interval between the adjacent preformed hole 103 is 100 ~ 500 mm. The anchoring piece 4 is a collision bolt or a twisted steel, and the diameter of the anchoring piece 4 is 6-10 mm.
A plurality of reinforcing bar units 2 set gradually along 5 direction of height of brickwork brick post. Wherein, the steel bar unit 2 is the annular structure that two U type reinforcing bars 201 splice the ring configuration that sets up around 1 circumference on high ductility concrete layer. As the preferred scheme of the utility model, two ends of U shaped steel muscle 201 are provided with bending section 202, and this bending section 202's reinforcing bar perpendicular to U shaped steel muscle place face. Two U shaped steel muscle 201 in every reinforcing bar unit 2 are arranged along 5 direction of height staggers of brickwork brick post, and the mutual crisscross square frame structure 203 that forms of the bending section 202 of two U shaped steel muscle promotes U shaped steel muscle and high-ductility concrete layer 1's joint strength. In one embodiment, the diameter of the U-shaped steel bar 201 is 6-10 mm, and the distance S between two U-shaped steel bars 201 on the same side in the adjacent steel bar units 224Is 100 to 300 mm.
Thickness S of the adhesive material layer 3325-10 mm, and the bonding material can be selected from high-ductility concrete, cement mortar, grouting material, anti-crack mortar and the like.
As the alternative of the present invention, a plurality of fiber mesh cloths 6 are provided in the high-ductility concrete wall panel 1, as shown in fig. 7. The fiber mesh cloth has high tensile strength, can meet the requirement of reinforcement by pouring a very thin layer of high-ductility concrete, hardly changes the section size of a repaired component, is not afraid of corrosion, and can be used for reinforcement repair in severe environment; in addition, the diameter of the fiber bundle of the fiber mesh cloth is very small, which is beneficial to the multilayer arrangement. The fiber mesh cloth 6 is provided with 1-3 layers, and the distance between the bundles of the fiber mesh cloth is 5-30 mm. The fiber mesh cloth can be selected from carbon fiber mesh cloth, glass fiber mesh cloth, basalt fiber mesh cloth or PBO fiber mesh cloth.
The high-ductility concrete used in the utility model comprises the components of cement, fly ash, silica fume, sand, PVA fiber, water reducing agent and waterCement, by mass percent: fly ash: silica fume: sand: water 1: 0.9: 0.1: 0.76: 0.58; the volume blending amount of the PVA fiber is 1.5 percent by taking the total volume of the cement, the fly ash, the silica fume, the sand and the water which are uniformly mixed as a base number; the addition amount of the water reducing agent is 0.8 percent of the total mass of the cement, the fly ash and the silica fume. Wherein: the maximum grain size of the sand is 1.26 mm; the PVA fiber is PA600 fiber produced by Shanghai Royo science and technology Limited, the length is 8mm, the diameter is 26 μm, the tensile strength is 1200MPa, and the elastic modulus is 30 GPa; the cement is P.O.52.5R portland cement; the fly ash is I-grade fly ash; the loss on ignition of the used silica fume is 5 percent, the content of the silica is 88 percent, and the specific surface area is 18000m 2/kg; the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent with the water reducing rate of more than 30 percent, and the polycarboxylic acid water reducing agent is produced by Jiangsu Bott new material Co
A type polycarboxylic acid high-performance water reducing agent.
The following description will be made with reference to specific embodiments of the reinforcing method of the reinforcing apparatus of the present invention:
in this embodiment, the dimension of the masonry brick column 5 is b equal to 370mm, and h equal to 370 mm; is built by MU7.5 bricks and M2.5 mortar, and the height is 3.0M. The high-ductility concrete layer 1 is prefabricated in a factory according to the size of the brick column. As shown in FIG. 2, the gap S between the masonry brick column 55 and the high-ductility concrete layer 1325mm, design thickness t of high-ductility concrete layer 1130mm, the dimension S of one side of the high-ductility concrete layer3530+5+370+5+ 30-440 mm, and the other dimension is half of the width h of the brick column, i.e. S34370/2 mm, size S of thinned plate end section31＝50mm，S 335 mm. As shown in FIG. 6, the size S of the embedded bars22＝S32/2＝220mm，S21＝S32/2＝220mm。
The method comprises the following steps: cleaning the decorative layer on the surface of the masonry brick column 5 to ensure that the wall surface is clean and flat; sleeving two high-ductility concrete layer units 101 on two sides of the brick column;
step two: drilling holes through 103 holes of a prepared hole on the high-ductility concrete layer by using a drilling machine, inserting an expansion bolt for fixing, wherein the diameter of the bolt is 8mm, and the implantation depth is 150 mm;
step three: and (3) a bonding material layer 3 is poured into a gap between the high-ductility concrete layer 1 and the masonry brick column 5, and the bonding material is selected from high-strength grouting material and is densely poured.
In the above description, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be understood broadly, and may be, for example, fixedly connected or detachably connected or integrated; either a direct connection or an indirect connection, and the like. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.
The various features described in the foregoing detailed description can be combined in any suitable manner without departing from the spirit of the invention, and should also be construed as disclosed in the invention.
Claims (9)
1. A prefabricated high-ductility concrete reinforcing device for masonry brick columns is characterized by comprising a high-ductility concrete layer (1), a plurality of steel bar units (2) pre-buried in the high-ductility concrete layer (1), a bonding material layer (3) and anchoring pieces (4);
the whole shape of the high-ductility concrete layer (1) is an annular shape matched with the external profile of the masonry brick column (5); a preformed hole (103) for penetrating through the anchoring piece (4) is formed in the high-ductility concrete layer (1);
the plurality of steel bar units (2) are sequentially arranged along the height direction of the masonry brick column (5); the steel bar unit (2) is an annular structure formed by splicing two U-shaped steel bars (201) and arranged around the circumference of the high-ductility concrete layer (1);
the bonding material layer (3) is arranged between the high-ductility concrete layer (1) and the masonry brick column (5).
2. The precast high-ductility concrete reinforcement unit for masonry brick column according to claim 1, characterized in that said high-ductility concrete layer (1) is formed by splicing two U-shaped high-ductility concrete layer units (101), and the inside of the opening edge of said high-ductility concrete layer units (101) is provided with a notch (102); the binding material is poured in a gap between the high-ductility concrete layer (1) and the masonry brick column (5) to form the binding material layer (3).
3. The precast high-ductility concrete reinforcement unit for masonry brick column according to claim 2, wherein the thickness of the high-ductility concrete layer unit (101) is 20-40 mm, and the thickness of the notch (102) is 5-10 mm.
4. The precast high-ductility concrete reinforcing device for masonry brick column according to claim 1, characterized in that the two ends of the U-shaped steel bars (201) are provided with bent sections (202), the two U-shaped steel bars (201) in each steel bar unit (2) are arranged along the height direction of the masonry brick column (5) in a staggered manner, and the bent sections (202) of the two U-shaped steel bars are staggered with each other to form a square frame structure (203).
5. The precast high-ductility concrete reinforcement unit for masonry brick column according to claim 1, characterized in that the distance between two U-shaped steel bars (201) on the same side in adjacent steel bar units (2) is 100-300 mm.
6. The precast high-ductility concrete reinforcement unit for masonry brick column according to claim 1, characterized in that the thickness of the binding material layer (3) is 5 to 10 mm.
7. The precast high-ductility concrete reinforcement unit for masonry brick columns according to claim 1, characterized in that the distance between the adjacent prepared holes (103) is 100-500 mm, and the diameter of the prepared holes (103) is 8-14 mm.
8. The precast high-ductility concrete reinforcement of masonry brick column according to claim 1, characterized in that the anchor (4) is a collision bolt or a threaded steel bar.
9. The precast high-ductility concrete reinforcement of masonry brick columns according to claim 1, characterized in that a fiber mesh (6) is arranged in the high-ductility concrete layer (1); the number of layers of the fiber mesh cloth (6) is 1-3; the distance between the bundles of the fiber mesh cloth (6) is 5-30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922442452.6U CN211572710U (en) | 2019-12-30 | 2019-12-30 | Prefabricated high-ductility concrete reinforcing device for masonry brick column |
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| CN201922442452.6U CN211572710U (en) | 2019-12-30 | 2019-12-30 | Prefabricated high-ductility concrete reinforcing device for masonry brick column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908993A (en) * | 2022-05-06 | 2022-08-16 | 上海市建筑科学研究院有限公司 | Brick wall reinforcing method based on cyclic polyolefin resin and prefabricated high-ductility cement-based composite material plate |
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2019
- 2019-12-30 CN CN201922442452.6U patent/CN211572710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908993A (en) * | 2022-05-06 | 2022-08-16 | 上海市建筑科学研究院有限公司 | Brick wall reinforcing method based on cyclic polyolefin resin and prefabricated high-ductility cement-based composite material plate |
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