CN109914849B

CN109914849B - FRP wall reinforcing device and reinforcing method

Info

Publication number: CN109914849B
Application number: CN201910260060.XA
Authority: CN
Inventors: 王继兵; 魏保立; 马淑芳; 沈志
Original assignee: Zhengzhou University of Aeronautics
Current assignee: Zhengzhou University of Aeronautics
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2021-03-19
Anticipated expiration: 2039-04-02
Also published as: CN109914849A

Abstract

The invention relates to the technical field of building construction, in particular to a reinforcing device and a reinforcing method for an FRP wall, which comprise a reinforcing layer, upright posts and connecting rods between wallboards; the reinforcing layers are attached to two surfaces of the same wall body; the upright posts are attached to the surfaces of the reinforcing layers, and the reinforcing layers and the wall body are clamped between the upright posts from two sides of the same wall body; the connecting rods between the wallboards penetrate through the wall body and the reinforcing layer and are fixedly connected with the upright columns on the two sides of the wall body; the reinforcing layer is fixedly connected with the wall body through glue, and the back of the part of the reinforcing layer, which is in contact with the upright post, is coated with the glue; the device has improved the ultimate load capacity of wall body, has improved the structural ductility of wall body, has strengthened the anchor of FRP material at the wall body through the stand simultaneously, has still strengthened the reinforcement performance of stand to the wall body through concrete foundation and floor connecting piece.

Description

FRP wall reinforcing device and reinforcing method

Technical Field

The invention relates to the technical field of building construction, in particular to a reinforcing device and a reinforcing method for an FRP wall.

Background

The building has the disadvantages that the bearing capacity of the wall is continuously reduced and serious potential safety hazards exist due to the fact that the building is seriously aged due to long service time. It is therefore necessary to reinforce such walls. However, the wall reinforcing structure in the prior art mainly reinforces the cracked cracks, but not fundamentally reinforces the wall which is not cracked yet. In addition, the crack is reinforced only by aiming at the cracked crack, the crack can be prevented from further cracking, and the bending strength of the wall body cannot be improved fundamentally.

For example, in the ancient city Nanjing, a large number of masonry houses exist, more than 200 masonry buildings exist in the period of the republic of China, are important components of Nanjing building cultural heritage, and have important cultural relics value, use value and scientific research value. After the salutation in nearly one century, the civil buildings are gradually aged and degraded; the structure was also damaged to a great extent by the vandals and the units used; in addition, the existing building structure does not consider the requirement of earthquake fortification, and the earthquake resistance of the structure can not meet the requirement of the existing earthquake design specification basically. In order to better protect and reasonably develop the representative excellent buildings, abundant building cultural heritages are left for later people, and civil masonry buildings must be reinforced.

The traditional masonry reinforcement method generally comprises the following steps: the method for reinforcing the concrete surface by the aid of the concrete has certain advantages despite long-term practical engineering application. But the cultural relics building is different from the common industrial and civil buildings and has the characteristics and the particularity of the cultural relics building. Excellent cultural relics and buildings require the original appearance of the buildings to be maintained, the upper structure cannot be changed, and even the original outer facade cannot be modified so as to avoid damaging the original appearance, and the traditional reinforcing method cannot basically meet the harsh requirements.

In recent years, the increasingly mature FRP reinforced masonry method gradually enters the field of view of the public. The FRP masonry structure reinforcing technology is suitable for reinforcing local cracks of walls and reinforcing the walls under the condition of insufficient bearing capacity, so that the FRP masonry structure reinforcing technology is gradually paid high attention to the engineering field in recent years.

Compared with the traditional reinforcement mode, the novel technology has the advantages of being unique:

1. high strength and high efficiency: the ductility and the bearing capacity of the member can be greatly improved, and the stress performance of the member is improved. The FRP material has a tensile strength of about 10 times that of steel, but has a specific gravity of 1/4 that of steel.

2. Good corrosion resistance and durability: the reinforced member can resist the corrosion of various acids, alkalis and salts, and the integral durability of the building is improved. Regular maintenance is not needed after reinforcement, and the internal structure can be protected; has sufficient capacity to adapt to temperature changes; the FRP is additionally provided with the fireproof coating, so that the fireproof effect can be effectively realized, the adaptability of the structure to severe external environment is enhanced, and the service life of the structure is prolonged.

3. Fatigue resistance: to the structure that often bears effects such as dynamic load, cyclic load, variable load, can effectively guarantee the holistic fatigue resistance of structure after the reinforcement.

4. And (3) maintaining the appearance: aiming at various structural shapes such as circular, rectangular and irregular curved surfaces and various structural parts such as nodes, beams, plates and columns, the FRP material reinforcement can basically keep the original appearance and shape of the structure, and the advantage has absolutely irreplaceable significance for ancient buildings. Meanwhile, due to the light weight of the FRP material, the weight increase per square meter after reinforcement generally does not exceed one kilogram, and the dead weight of the original structure can be basically considered not to be changed, so that the seismic performance of the original structure can be effectively ensured not to be weakened due to the increase of the dead weight.

5. The construction is convenient: when the FRP sheet is used on site, the sheet can be cut at will according to specific conditions and needs, and complex construction tools do not need to be prepared. Therefore, the FRP reinforcement construction process has the advantages of short period, high efficiency, small occupied area and the like. The data show that the reinforcing efficiency of the bonded FRP is 4 to 8 times that of the reinforcing construction of the bonded steel plate. In addition, because the FRP cloth is a flexible material, the effective sticking rate can basically reach 100 percent, even if bubbles exist in the local part, the treatment is very easy, and the corresponding acceptance standard requires that the effective sticking rate reaches 70 percent, thereby effectively ensuring the construction quality and acceptance.

6. The comprehensive economic benefit is good. Although the price of the FRP sheet is relatively expensive, the material consumption is less during reinforcement, the construction time is short, large-scale machines are not needed, and the one-time investment cost does not exceed that of the traditional reinforcement method. If the sight is long, the long-term benefit is considered, the FRP has good durability, maintenance is hardly needed in the later period, and the long-term maintenance cost required by other reinforcing methods is high. Therefore, the FRP reinforcing method is more economical in comprehensive consideration.

Chinese patent CN206873978U discloses a wall reinforcing structure, which comprises reinforcing aluminum plates disposed on two side surfaces of a wall, wherein a plurality of horizontally disposed compression steel bars are arranged on the surface of each reinforcing aluminum plate along the vertical direction, each compression steel bar is provided with a plurality of through holes uniformly distributed along the length direction thereof, expansion bolts are inserted into the through holes close to the two end portions of each compression steel bar, common bolts are inserted into the remaining through holes of each compression steel bar, the expansion bolts and the front sections of the common bolts are fixedly connected in the wall, and the expansion bolts and the rear sections of the common bolts are connected with compression nuts for compressing the compression steel bars; one side surface of the wall body is provided with a reinforcing hole inclined to the vertical direction, an FRP rib is arranged in the reinforcing hole, and bar planting glue is filled between the FRP rib and the inner wall of the reinforcing hole.

The wall body reinforced structure that this patent was disclosed, its reinforced hole slope in vertical direction, however the degree of difficulty of slope trompil on the wall is high, and the cost is also high, often causes the wall body breakage during the construction easily, and this method is not advisable to the wall body reinforcement of ancient building, needs a structure and a method of carrying out the reinforcement to the wall body under the prerequisite of destroying the wall body as far as possible.

Most of the existing FRP reinforcing methods adopt an external sticking mode, FRP materials are stuck to a wall body externally through anchoring, the cracking load and the ultimate load of the reinforced wall body are obviously improved, but the wall body masonry is loose, the FRP sheets can not be effectively anchored, the FRP sheets are suddenly stripped from the surface of the wall body when the wall body is greatly deformed, a cooperative working mechanism is prematurely withdrawn, the self strength cannot be fully exerted, and the reinforcing effect is not as expected.

In order to fully exert the reinforcing effect of the FRP sheet, the wall can be clamped by adding constructional columns on two sides of the masonry wall to be reinforced, and the method has two aspects: the FRP sheet material can generate certain constraint effect on a wall body, and can be used as an effective anchoring part of the FRP sheet material, so that the effect of achieving twice the result with half the effort is achieved.

Disclosure of Invention

The invention aims to provide an FRP wall reinforcing device and a reinforcing method, the device improves the ultimate load capacity of the wall, improves the structural ductility of the wall, strengthens the anchoring of FRP materials on the wall through a stand column, and strengthens the reinforcing performance of the stand column on the wall through a concrete foundation and a floor connecting piece.

In order to achieve the purpose, the invention adopts the following technical scheme:

the FRP wall reinforcing device comprises a reinforcing layer, upright posts and connecting rods between wall boards;

the reinforcing layers are attached to two surfaces of the same wall body;

the upright posts are attached to the surfaces of the reinforcing layers, and the reinforcing layers and the wall body are clamped between the upright posts from two sides of the same wall body;

the connecting rods between the wallboards penetrate through the wall body and the reinforcing layer and are fixedly connected with the upright columns on the two sides of the wall body;

the reinforcing layer is fixedly connected with the wall body through glue, and the back of the part of the reinforcing layer, which is in contact with the upright post, is coated with the glue.

As an optimal scheme of the FRP wall reinforcing device, one surface, not attached to the wall, of the reinforcing layer is a smooth plane, one surface, attached to the wall, of the reinforcing layer is provided with convex patterns extending towards the wall, the convex patterns are in a regular polygon shape fully distributed on the surface of the reinforcing layer, and glue is coated on the convex patterns on the back surface of the part, not in contact with the stand column, of the reinforcing layer.

As a preferable scheme of the FRP wall reinforcing device, the wales are in a honeycomb shape formed by combining regular hexagons fully distributed on the surface of the reinforcing layer.

As an optimal scheme of the FRP wall reinforcing device, a through hole for the connecting rod to pass through between the wallboards is formed in the wall, the aperture of the through hole is larger than the outer diameter of the connecting rod between the wallboards, and the gap between the connecting rod between the wallboards and the through hole is filled with the planting bar glue.

As an optimal scheme of the FRP wall reinforcing device, the upright column is in a C-shaped steel shape, and a web plate of the upright column is fixedly connected with the connecting rod between the wallboards.

As an optimal scheme of the FRP wall reinforcing device, the FRP wall reinforcing device further comprises a concrete foundation and an embedded part, wherein the concrete foundation is arranged in the ground below the wall, and the bottom end of the upright post is fixedly connected with the concrete foundation through the embedded part.

As an FRP wall reinforcing apparatus's an preferred scheme, the built-in fitting is including the first riser that top-down connects in proper order, first horizontal plate and crab-bolt, the laminating of first horizontal plate is at the top surface of concrete foundation, the crab-bolt inserts in the inside of concrete foundation, first riser is from the vertical upwards extension in both sides of first horizontal plate, first riser clamp is established in the both sides of stand pterygoid lamina, first riser and stand fixed connection, set up a plurality of first connection slotted holes that run through first riser perpendicularly on the first riser, set up the first round hole of connecting with every first connection slotted hole one-to-one on the stand.

As a preferred scheme of FRP wall reinforcing apparatus, still include floor connecting piece, floor connecting piece installs the top and/or the bottom at the stand, floor connecting piece and floor fixed connection.

As a preferred scheme of an FRP wall reinforcing device, a floor slab connecting piece comprises a second vertical plate, a second horizontal plate and an inter-floor connecting rod, wherein the second vertical plate extends outwards from two sides of the second horizontal plate, the second vertical plate is clamped on two sides of a wing plate of a vertical column, the second vertical plate is fixedly connected with the vertical column, and the second horizontal plate is fixedly connected with a floor slab; set up a plurality of second connection slotted holes that run through the second riser perpendicularly on the second riser, set up on the stand and be connected the round hole with the second of every second connection slotted hole one-to-one, the vertical third that runs through the second horizontal plate is all seted up in the four corners of second horizontal plate and is connected the slotted hole, and the floor connecting piece fixed connection of both sides about the connecting rod passes through behind the third connection slotted hole and the floor with the floor between the floor.

A reinforcing method of an FRP wall reinforcing device comprises the following steps:

firstly, excavating the ground beside a wall body, and pouring a concrete foundation and simultaneously burying embedded parts;

step two, a through hole is formed in the floor slab, and the floor slab connecting piece is fixedly arranged on the floor slab through an expansion bolt or an inter-floor connecting rod 6 c;

step three, pasting the reinforcing layer on the wall surface through glue, wherein the back surface of the contact part of the reinforcing layer and the stand column is fully coated with the glue, and the back surface of the contact part of the reinforcing layer and the stand column is only coated with the glue on the convex pattern;

step four, forming through holes in the wall surface, inserting the connecting rods between the wallboards into the through holes, and filling bar-planting glue in gaps between the connecting rods between the wallboards and the through holes;

step five, fixedly mounting the upright columns on the connecting rods between the wallboards, and enabling the webs of the upright columns to be attached to the reinforcing layer;

and step six, fixedly connecting the stand column with the first vertical plate or the second vertical plate.

The invention has the beneficial effects that:

firstly, excavating the ground beside a wall body, pouring a concrete foundation and simultaneously burying a built-in fitting;

then, a through hole is arranged on the floor slab, and the floor slab connecting piece is fixedly arranged on the floor slab through an expansion bolt or an inter-floor connecting rod 6 c;

then, the reinforcing layer is pasted on the wall surface through glue, wherein the back surface of the part, in contact with the stand column, of the reinforcing layer is fully coated with the glue, and the back surface of the part, not in contact with the stand column, of the reinforcing layer is only coated with the glue on the convex patterns;

then, a through hole is formed in the wall surface, the connecting rod between the wallboards is plugged into the through hole, and bar planting glue is filled in a gap between the connecting rod between the wallboards and the through hole;

then, fixedly installing the upright columns on the connecting rods between the wallboards, and enabling the webs of the upright columns to be attached to the reinforcing layers;

and then, fixedly connecting the upright column with the first vertical plate or the second vertical plate. The upright columns installed on each floor board are connected with the floor connecting rods 6c through the floor connecting pieces, and the upright column of the first floor is installed on the concrete foundation through the embedded pieces, so that the reinforcing effect of the upright columns on the wall body is greatly enhanced;

the upright posts tightly press the reinforcing layers adhered to the two sides of the wall body on the wall through the connecting rods between the wall bodies, so that the anchoring effect is achieved;

the back of the part of the reinforcing layer contacting with the stand column is completely coated with glue, and the back of the part of the reinforcing layer not contacting with the stand column is only coated with glue on the convex ribs, so that a whole wall surface is divided into a plurality of small wall surfaces, and partial pasting is carried out on each small wall surface, thereby improving the ultimate bearing capacity of the wall surface of the historic building and improving the structural ductility of the wall surface.

1. The FRP material is clamped on the wall through the upright posts, so that the anchoring between the FRP material and the wall is firmer, and the phenomenon that the FRP material is instantly peeled off from the wall due to the deformation of the wall is avoided;

2, the FRP material is partially adhered to the wall body, so that the ultimate load capacity of the wall body is improved, and the structural ductility of the wall body is improved;

3. the stand columns of each floor are connected through floor slab connecting pieces and are finally installed on the concrete foundation through embedded pieces, so that the strength of the foundation is improved, and the strength of the wall is indirectly enhanced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a front view of an FRP wall reinforcing apparatus according to an embodiment of the present invention;

FIG. 2 is a side view of an FRP wall reinforcing apparatus according to an embodiment of the present invention;

FIG. 3 is a side sectional view of an FRP wall reinforcing apparatus according to an embodiment of the invention;

FIG. 4 is a partial enlarged view of FIG. 3 at B;

FIG. 5 is a first perspective view of an FRP wall reinforcement device according to an embodiment of the present invention;

FIG. 6 is a second perspective view of an FRP wall reinforcement device according to an embodiment of the present invention;

FIG. 7 is a perspective view of a part of the FRP wall reinforcing apparatus according to an embodiment of the invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

FIG. 9 is an enlarged view of a portion of FIG. 7 at D;

FIG. 10 is a perspective view of a reinforcing layer of an FRP wall reinforcing apparatus according to an embodiment of the invention;

fig. 11 is a perspective view of a floor connecting member of an FRP wall reinforcing apparatus according to an embodiment of the present invention;

in the figure:

1. a reinforcement layer; 1a, wales;

2. a column; 2a, a first connecting round hole; 2b, a second connecting round hole;

3. connecting rods between the wallboards;

4. a concrete foundation;

5. embedding parts; 5a, a first vertical plate; 5a1, a first connecting slot; 5b, a first horizontal plate; 5c, anchor bolts;

6. a floor slab connector; 6a, a second vertical plate; 6a1, second connecting slot; 6b, a second horizontal plate; 6b1, third connecting slot; 6c, connecting rods between floors.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 11, the FRP wall reinforcing apparatus includes a reinforcing layer 1, a column 2, and an inter-wall connecting rod 3;

the reinforcing layers 1 are attached to two surfaces of the same wall body;

the upright posts 2 are attached to the surfaces of the reinforcing layers 1, and the reinforcing layers 1 and the wall are clamped between the upright posts 2 from two sides of the same wall;

the connecting rods 3 between the wallboards penetrate through the wall body and the reinforcing layer 1 and are fixedly connected with the upright posts 2 on the two sides of the wall body;

the reinforcing layer 1 is fixedly connected with the wall body through glue, wherein the back of the part of the reinforcing layer 1, which is contacted with the upright post 2, is coated with the glue.

Research shows that the FRP material is completely pasted on concrete, so that the ultimate bearing capacity is greatly improved, but the ductility is reduced, the brittle failure of the structure is easy to generate, and the ductility of a reinforced member is improved while the bearing capacity is improved by adopting a partial pasting method;

therefore, the reinforcing layer 1 is attached to the two surfaces of the wall body through glue, the cracking load and the limit load of the wall body are increased, but only the back surface of the part, in contact with the upright post 2, of the reinforcing layer 1 is fixedly connected with the wall surface through the glue, so that the reinforcing layer 1 is prevented from being completely adhered to the wall surface, and the ductility of the wall surface is improved;

simultaneously for strengthening being connected between back up coat 1 and the wall body, with back up coat 1 through connecting rod 3 anchor between stand 2 and wallboard on the wall, the wall body is cliied through connecting rod 3 between the wallboard to stand 2 to produce certain constraint effect to the wall body, back up coat 1 peels off from the wall body surface suddenly when avoiding the wall body to take place great deformation, early withdraw from the collaborative work mechanism, fail to exert the intensity of self completely.

The one side that the back layer 1 is not laminated with the wall body is smooth plane, and the one side that back layer 1 is laminated with the wall body is equipped with burr 1a towards the extension of wall body direction, and burr 1a is the regular polygon shape of full cloth back layer 1 surface, and the burr 1a on its back of the position that back layer 1 does not contact with stand 2 scribbles glue.

The FRP material is partially pasted on the concrete surface to enhance the ultimate bearing capacity and the structural ductility, but the wall of an ancient building is different from a newly-built concrete bridge body and a beam column, the mortar of the wall of the ancient building is basically corroded, the strength of the only existing mortar is close to zero, the cost and the working hour for replacing the mortar are too high, so that the ultimate bearing capacity cannot be well improved by partially pasting the FRP material on the wall surface of the ancient building on the premise of not replacing the mortar, but the FRP material cannot be completely pasted on the wall surface, therefore, the convex pattern 1a is arranged on the surface where the FRP material is pasted with the wall, the glue is completely coated on the back surface of the part where the reinforcing layer 1 is contacted with the upright column 2, the glue is only coated on the convex pattern 1a on the back surface of the part where the reinforcing layer 1 is not contacted with the upright column 2, so as to divide the integral wall surface into a plurality of small wall surfaces, and the partial pasting, thereby improving the ultimate bearing capacity of the ancient building wall surface and improving the structural ductility of the ancient building wall surface.

The wales 1a are in the shape of a honeycomb formed by regular hexagons which are filled with the surface of the reinforcing layer 1.

The honeycomb shape is the firmest structure in nature, and the acting force on the reinforcing layer 1 when the wall body deforms can be uniformly distributed on the surface of the reinforcing layer 1 through the convex lines 1a of the honeycomb shape, so that the stress concentration is avoided.

The wall body is provided with a through hole for the connecting rod 3 between the wallboards to pass through, the aperture of the through hole is larger than the outer diameter of the connecting rod 3 between the wallboards, and the gap between the connecting rod 3 between the wallboards and the through hole is filled with bar planting glue.

The connecting rods 3 between the wallboards can be double-ended studs and then are fixedly connected with the upright posts 2 through nuts;

the connecting rods 3 between the wallboards can also be cylinders made of FRP materials and then are fixedly connected with the upright posts 2 through buckles;

the connecting rods 3 between the wallboards are connected with the wall body through bar planting glue, so that the toughness of the wall body can be enhanced by the connecting rods 3 between the wallboards.

The upright post 2 is in a C-shaped steel shape, and a web plate of the upright post 2 is fixedly connected with the connecting rod 3 between the wallboards.

The C-shaped steel has stable structure, easy production and installation, low cost and high strength, and is one of the most suitable materials for the upright post.

The concrete foundation structure is characterized by further comprising a concrete foundation 4 and an embedded part 5, wherein the concrete foundation 4 is arranged in the ground below the wall body, and the bottom end of the upright post 2 is fixedly connected with the concrete foundation 4 through the embedded part 5.

The ancient building not only the wallboard load is poor, and the load of basis is also poor, fixes the effect on original basis of ancient building and wallboard not good with stand 2, so need excavate ground concreting foundation 4, then with built-in fitting 5 insert concrete foundation 4 in, treat that concrete foundation 4 solidifies the back with built-in fitting 5 and stand 2 through bolt fixed connection together to strengthen the wall body bearing capacity of one floor greatly.

The embedded part 5 is including the first riser 5a that top-down connects in proper order, first horizontal plate 5b and crab-bolt 5c, the laminating of first horizontal plate 5b is at the top surface of concrete foundation 4, crab-bolt 5c inserts in the inside of concrete foundation 4, first riser 5a is from the vertical upwards extension in both sides of first horizontal plate 5b, first riser 5a presss from both sides the both sides of establishing at the 2 pterygoid lamina of stand, first riser 5a and stand 2 fixed connection, set up a plurality of first connecting slot 5a1 that run through first riser 5a perpendicularly on the first riser 5a, set up the first connecting round hole 2a with every first connecting slot 5a1 one-to-one on the stand 2.

The embedded part 5 is fixedly connected with the concrete foundation 4 through an anchor bolt 5c, the anchor bolt 5c is fixedly connected with a first vertical plate 5a through a first horizontal plate 5b, and the first vertical plate 5a penetrates through a first connecting slotted hole 5a1 and a first connecting round hole 2a through a bolt so as to be fixedly connected with the upright post 2.

The floor slab connecting piece is characterized by further comprising a floor slab connecting piece 6, wherein the floor slab connecting piece 6 is arranged at the top end and/or the bottom end of the upright post 2, and the floor slab connecting piece 6 is fixedly connected with a floor slab.

When involving multi-storey building, when stand 2 installs more than the second floor, then can't install concrete foundation 4 and built-in fitting 5, need fix the top and the bottom of stand 2 on the floor of stand 2 top and below respectively through floor connecting piece 6 this moment promptly.

The floor slab connecting piece 6 comprises a second vertical plate 6a, a second horizontal plate 6b and an inter-floor slab connecting rod 6c, the second vertical plate 6a extends outwards from two sides of the second horizontal plate 6b, the second vertical plate 6a is clamped on two sides of a wing plate of the upright post 2, the second vertical plate 6a is fixedly connected with the upright post 2, and the second horizontal plate 6b is fixedly connected with the floor slab; a plurality of second connecting slotted holes 6a1 which vertically penetrate through the second vertical plate 6a are formed in the second vertical plate 6a, second connecting round holes 2b which correspond to each second connecting slotted hole 6a1 one by one are formed in the upright post 2, the four corners of the second horizontal plate 6b are provided with third connecting slotted holes 6b1 which vertically penetrate through the second horizontal plate 6b, and the inter-floor connecting rods 6c penetrate through the third connecting slotted holes 6b1 and are fixedly connected with floor slab connecting pieces 6 on the upper side and the lower side of the floor slab after penetrating through the floor slab.

The second vertical plate 6a passes through the second connecting slotted hole 6a1 and the second connecting round hole 2b through bolts so as to be fixedly connected with the upright post 2, and the second horizontal plate 6b passes through the third connecting slotted hole 6b1 through expansion bolts so as to be fixedly connected with the roof floor;

when involving multi-storey building, 2 bottom of stand on the first floor pass through built-in

fitting

5 and 4 fixed connection of concrete foundation, floor connecting piece 6 on 2 top of first floor stand passes through floor connecting rod 6c and floor connecting piece 6 fixed connection of 2 bottoms of second floor stand, floor connecting rod 6c is double threaded rod, floor connecting rod 6c passes through behind the third connection slotted hole 6b1 fixed through the nut, analogize with this, thereby link together the stand 2 of every floor installation, thereby the load-carrying capacity of multi-storey building wall has been strengthened.

firstly, excavating the ground beside a wall body, and pouring a concrete foundation 4 and simultaneously burying an embedded part 5;

step two, a through hole is formed in the floor slab, and the floor slab connecting piece 6 is fixedly arranged on the floor slab through an expansion bolt or an inter-floor connecting rod 6 c;

adhering the reinforcing layer 1 to the wall surface through glue, wherein the back surface of the contact part of the reinforcing layer 1 and the upright post 2 is coated with the glue, and the back surface of the contact part of the reinforcing layer 1 and the upright post 2 is only coated with glue on the convex pattern 1 a;

step four, forming a through hole on the wall surface, inserting the connecting rod 3 between the wallboards into the through hole, and filling bar-planting glue in a gap between the connecting rod 3 between the wallboards and the through hole;

step five, fixedly mounting the upright post 2 on the connecting rod 3 between the wallboards, and enabling a web plate of the upright post 2 to be attached to the reinforcing layer 1;

and step six, fixedly connecting the upright post 2 with a first vertical plate 5a or a second vertical plate 6 a.

The working principle is as follows:

firstly, excavating the ground beside a wall body, pouring a concrete foundation 4 and simultaneously burying an embedded part 5;

then, a through hole is arranged on the floor slab, and the floor slab connecting piece 6 is fixedly arranged on the floor slab through an expansion bolt or an inter-floor connecting rod 6 c;

then, adhering the reinforcing layer 1 on the wall surface through glue, wherein the back surface of the contact part of the reinforcing layer 1 and the upright post 2 is coated with the glue, and the back surface of the contact part of the reinforcing layer 1 and the upright post 2 is only coated with glue on the convex pattern 1 a;

then, a through hole is formed in the wall surface, the connecting rod 3 between the wallboards is plugged into the through hole, and bar planting glue is filled in a gap between the connecting rod 3 between the wallboards and the through hole;

then, fixedly mounting the upright post 2 on the connecting rod 3 between the wallboards, and enabling a web plate of the upright post 2 to be attached to the reinforcing layer 1;

then, the pillar 2 is fixedly connected to the first riser 5a or the second riser 6 a.

The upright columns 2 arranged on each floor board are connected with the floor connecting rods 6c through the floor connecting pieces 6, and the upright column 2 on the first floor is arranged on the concrete foundation 4 through the embedded pieces 5, so that the reinforcing effect of the upright column 2 on the wall body is greatly enhanced;

the upright post 2 tightly presses the reinforcing layers 1 adhered to two sides of the wall body on the wall through the connecting rod 3 between the wallboards, thereby playing the role of anchoring;

the back of the part of the contact between the reinforcing layer 1 and the upright post 2 is completely coated with glue, and the back of the part of the reinforcing layer 1 which is not in contact with the upright post 2 is only coated with glue on the convex pattern 1a, so that the whole wall surface is divided into a plurality of small wall surfaces, and partial pasting is carried out on each small wall surface, thereby improving the ultimate bearing capacity of the wall surface of the historic building and improving the structural ductility of the wall surface.

It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. An FRP wall reinforcing device comprises a reinforcing layer (1), upright posts (2) and connecting rods (3) between wallboards;

the reinforcing layers (1) are attached to two surfaces of the same wall body;

the upright posts (2) are attached to the surfaces of the reinforcing layers (1), and the reinforcing layers (1) and the wall body are clamped between the upright posts (2) from two sides of the same wall body;

the connecting rods (3) between the wallboards penetrate through the wall body and the reinforcing layer (1) and are fixedly connected with the upright posts (2) on the two sides of the wall body;

the reinforcing layer (1) is fixedly connected with the wall body through glue, wherein the back of the part, in contact with the upright post (2), of the reinforcing layer (1) is completely coated with the glue;

the wall-mounted building block is characterized in that one surface, not attached to a wall body, of the reinforcing layer (1) is a smooth plane, one surface, attached to the wall body, of the reinforcing layer (1) is provided with convex patterns (1a) extending towards the direction of the wall body, the convex patterns (1a) are regular polygon shapes fully distributed on the surface of the reinforcing layer (1), the reinforcing layer (1) is not in contact with the upright post (2), and glue is coated on only the convex patterns (1a) on the back surface of the reinforcing layer.

2. The FRP wall reinforcing apparatus as claimed in claim 1, wherein the wales (1a) are in a honeycomb shape combined by regular hexagons which are distributed over the surface of the reinforcing layer (1).

3. The FRP wall reinforcing device according to claim 1, wherein the wall is provided with a through hole for the connecting rod (3) between the wallboards to pass through, the aperture of the through hole is larger than the outer diameter of the connecting rod (3) between the wallboards, and the gap between the connecting rod (3) between the wallboards and the through hole is filled with bar planting glue; the upright post (2) is in a C-shaped steel shape, and a web plate of the upright post (2) is fixedly connected with the connecting rod (3) between the wallboards; the concrete column is characterized by further comprising a concrete foundation (4) and embedded parts (5), wherein the concrete foundation (4) is arranged in the ground below the wall body, and the bottom ends of the stand columns (2) are fixedly connected with the concrete foundation (4) through the embedded parts (5).

4. The FRP wall reinforcing device according to claim 3, wherein the embedded parts (5) comprise first risers (5a) connected in sequence from top to bottom, first horizontal plate (5b) and crab-bolt (5c), the laminating of first horizontal plate (5b) is at the top surface of concrete foundation (4), crab-bolt (5c) insert in the inside of concrete foundation (4), first riser (5a) are from the vertical upwards extension in both sides of first horizontal plate (5b), first riser (5a) press from both sides and establish the both sides at stand (2) pterygoid lamina, first riser (5a) and stand (2) fixed connection, set up a plurality of first connection slotted hole (5a1) that run through first riser (5a) perpendicularly on first riser (5a), set up on stand (2) and connect round hole (2a) with every first connection slotted hole (5a1) one-to-one.

5. The FRP wall reinforcing device according to claim 1, further comprising floor slab connecting members (6), wherein the floor slab connecting members (6) are installed at the top end and/or the bottom end of the upright post (2), and the floor slab connecting members (6) are fixedly connected with the floor slab; the floor slab connecting piece (6) comprises a second vertical plate (6a), a second horizontal plate (6b) and an inter-floor connecting rod (6c), the second vertical plate (6a) extends outwards from two sides of the second horizontal plate (6b), the second vertical plate (6a) is clamped on two sides of a wing plate of the upright post (2), the second vertical plate (6a) is fixedly connected with the upright post (2), and the second horizontal plate (6b) is fixedly connected with the floor slab; set up a plurality of second connection slotted holes (6a1) that run through second riser (6a) perpendicularly on second riser (6a), set up on stand (2) and connect slotted hole (6a1) one-to-one second with every second and connect round hole (2b), vertical third connection slotted hole (6b1) that runs through second horizontal plate (6b) is all seted up in the four corners of second horizontal plate (6b), floor connecting rod (6c) pass third connection slotted hole (6b1) run through behind the floor with floor connecting piece (6) fixed connection of both sides about the floor.