Brick masonry structure with single-side reinforcing layer

Abstract

The utility model discloses a brick masonry structure with a single-side reinforcing layer, belongs to the technical field of brick masonry reinforcement, and aims to solve the problems that the existing single-side reinforced brick masonry structure is long in construction period, and the rigidity eccentricity of a reinforced wall body is uncontrollable due to the fact that the rigidity eccentricity of the section is greatly increased after reinforcement. The hanging net structure is used as a supporting and positioning part of the UHPC120 concrete reinforcing layer, the reinforcing layer can reinforce the brick masonry after being solidified, the hanging net structure comprises a plurality of embedded steel bars and a plurality of reinforcing mesh pieces, the embedded steel bars are evenly distributed and inserted in the side, where the reinforcing layer is arranged, of the brick masonry, the axis of each embedded steel bar is perpendicular to the brick masonry, and the reinforcing mesh pieces are connected with the embedded steel bars. The tail end of each embedded steel bar extends to the outer side of the brick masonry, a plurality of steel bar meshes are evenly laid on the side, provided with the reinforcing layer, in the brick masonry, and each steel bar mesh and the tail ends of the corresponding embedded steel bars are bound and fixed through binding belts. The method is mainly used for reinforcing an existing brick masonry structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of brick masonry reinforcement, and particularly relates to a brick masonry structure with a single reinforcing layer. BACKGROUND

[0002] Masonry structures are widely distributed in various places at home and abroad due to the advantages of easy material procurement and convenient construction, have a long history, and are widely used, such as residential buildings, office buildings, and factories. These brick masonry structures can reflect the historical style and characteristics of a city and have certain historical, cultural, artistic, and scientific value. Under the action of long-term wind and sunlight and natural disasters and human-caused damage, the brick masonry structures are severely weathered, have poor overall stress performance, and locally collapse, which cannot meet the normal use function. Therefore, in order to preserve the original style of historical buildings, historical and cultural buildings have attracted social attention, and the reinforcement and reuse of historical buildings have become a hot topic.

[0003] At present, the reinforcement of brick masonry structures usually adopts the reinforced concrete section enlargement method, which has many shortcomings, such as a large reinforcement thickness, a large increase in the eccentricity of the stiffness of the reinforced combined section due to the increase in the size of the section after the reinforcement of ordinary reinforced concrete, uncontrollable eccentricity of the stiffness of the reinforced wall, great influence on the stress mechanism under the basic stress state of the structure, significant increase in the constant load of the structure by the ordinary reinforced concrete reinforcement method, long construction period caused by large amount of formwork and steel engineering, and significant reduction in the use space of the original building by the internal frame structure reinforcement method. Therefore, it is very practical to develop a brick masonry structure with a single reinforcing layer to overcome the drawbacks of traditional brick masonry reinforcement. UTILITY MODEL CONTENTS

[0004] The utility model discloses a brick masonry structure with a single reinforcing layer to solve the problems of long construction period, large increase in the eccentricity of the stiffness of the reinforced combined section, and uncontrollable eccentricity of the stiffness of the reinforced wall of the existing single reinforced brick masonry structure.

[0005] A brick masonry structure with a single reinforcing layer comprises a brick masonry, a reinforcing layer is arranged on one side of the brick masonry, the reinforcing layer is positioned with the brick masonry through a hanging net structure, and the reinforcing layer is fixedly connected with the brick masonry.

[0006] The hanging net structure comprises a plurality of planted steel bars and a plurality of steel mesh sheets, the plurality of planted steel bars are uniformly inserted into the side of the brick masonry where the reinforcing layer is arranged, the axis of each planted steel bar is arranged vertically to the brick masonry, the end of each planted steel bar extends to the outside of the brick masonry, the plurality of steel mesh sheets are uniformly laid on the side of the brick masonry where the reinforcing layer is arranged, and each steel mesh sheet is fixedly connected with the end of the corresponding plurality of planted steel bars through a binding belt, the reinforcing layer is hung on the plurality of steel mesh sheets and fixedly connected with the brick masonry.

[0007] Further, the reinforcing layer is a UHPC120 concrete reinforcing layer;

[0008] Further, the thickness of the reinforcing layer ranges from 20mm to 80mm;

[0009] Further, the end of the planted steel bar is arranged in a hook shape;

[0010] Further, a plurality of shear key pits are uniformly processed on one side of the brick masonry provided with the reinforcing layer, and each shear key pit is arranged in correspondence with one planted steel bar, the depth direction of each shear key pit is the same as the thickness direction of the brick masonry, and a planted steel bar hole is processed at the center of the bottom of each shear key pit, and each planted steel bar is inserted into a planted steel bar hole and fixedly connected to the brick masonry through planted steel bar glue;

[0011] Further, the shear key pit is filled with a shear key, and the end of the shear key close to the reinforcing layer is arranged in the same plane as the side of the brick masonry provided with the reinforcing layer, and the shear key is sleeved on the planted steel bar and supports and fixes the end of the planted steel bar;

[0012] Further, the shear key is a rectangular key, a cylindrical key, a circular truncated cone key or a prismatic key, and the shear key pit is a rectangular pit, a cylindrical pit, a circular truncated cone pit or a prismatic pit matched with the shear key;

[0013] Further, a rabbet groove is processed at the mortar joint of the side of the brick masonry provided with the reinforcing layer, the reinforcing layer extends into the rabbet groove and is fixedly connected to the brick masonry, the depth of the rabbet groove is greater than 20mm, and the rabbet rate is 50% to 60%;

[0014] Further, the planted steel bar rate of the planted steel bar is 0.02% to 0.04%, the planted steel bar spacing is 200mm to 300mm, the planted steel bar depth is 100mm to 250mm, and the end face diameter of the planted steel bar is 6mm to 8mm;

[0015] Further, the size of the steel mesh is at least 250mm*250mm, the distance between adjacent two steel bars in the steel mesh is 50mm to 80mm, and the end face diameter of the steel bar in the steel mesh is 6mm to 12mm;

[0016] The beneficial effects of the present application relative to the prior art are:

[0017] The brick masonry structure with a single-face reinforcing layer provided by the present application is suitable for reinforcing existing brick masonry structures. Compared with traditional reinforcing structures, the technology can reduce the work of installing formwork and greatly shorten the reinforcing period. The hanging structure composed of a steel mesh and a planted steel bar and the UHPC120 concrete can perfectly overcome the technical problems of large reinforcing area, long construction period and poor ductility of traditional reinforcing technologies.

[0018] The brick masonry structure with a single reinforced layer provided by the application adopts UHPC120 material with super-high strength, high toughness and high durability, optimized design of reinforced section size and simple pressing and smoothing construction to quickly, conveniently and efficiently construct, so as to achieve a high-quality project of saving materials, space and post-maintenance, and finally improve comprehensive economic benefits;

[0019] The brick masonry structure with a single reinforced layer provided by the application adopts a hanging structure group composed of a steel mesh and a planted steel bar as a support and positioning structure of the reinforced layer, so that the UHPC120 concrete does not need to be supported when being laid, and workers directly adopt a pressing and smoothing construction method on the hanging structure to once form the UHPC120, the UHPC120 has good fluidity and excellent adhesion, and the hanging net structure will not cause the UHPC120 after pressing and smoothing to fall off and package, etc. At the same time, the UHPC120 also has high toughness, so that even if the brick masonry absorbs part of the water in the UHPC120, the reinforced layer surface cannot appear shrinkage micro-cracks, greatly ensuring the stability of the reinforced layer. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the brick masonry structure with a single reinforced layer provided by the application (the shear key is a rectangular);

[0021] Figure 2 It is a structural schematic diagram of the brick masonry structure with a single reinforced layer provided by the application (the shear key is a prism);

[0022] Figure 3 It is a structural schematic diagram of the brick masonry structure with a single reinforced layer provided by the application (the shear key is a cylindrical);

[0023] Figure 4 It is a structural schematic diagram of the brick masonry structure with a single reinforced layer provided by the application (the shear key is a circular truncated cone);

[0024] Figure 5 It is a construction process schematic diagram of the brick masonry structure with a single reinforced layer provided by the application;

[0025] Figure 6 It is a side view of the brick masonry structure with a single reinforced layer provided by the application;

[0026] Figure 7 It is a schematic diagram of processing a jointing groove on the brick masonry structure with a single reinforced layer provided by the application;

[0027] Figure 8 It is a distribution schematic diagram of a planted steel bar hole and a shear key pit of the brick masonry structure with a single reinforced layer provided by the application (the shear key pit is a rectangular pit);

[0028] Figure 9 The distribution of the steel bar hole and the shear key pit in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a rectangular pit);

[0029] Figure 10 The installation of the steel mesh in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a rectangular pit);

[0030] Figure 11 The coating of the reinforcement layer in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a rectangular pit);

[0031] Figure 12 The distribution of the steel bar hole and the shear key pit in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a prism pit);

[0032] Figure 13 The installation of the steel bar in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a prism pit);

[0033] Figure 14 The installation of the steel mesh in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a prism pit);

[0034] Figure 15 The coating of the reinforcement layer in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a prism pit);

[0035] Figure 16 The distribution of the steel bar hole and the shear key pit in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a cylindrical pit);

[0036] Figure 17 The installation of the steel bar in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a cylindrical pit);

[0037] Figure 18 The installation of the steel mesh in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a cylindrical pit);

[0038] Figure 19 The coating of the reinforcement layer in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a cylindrical pit);

[0039] Figure 20 The distribution of the steel bar hole and the shear key pit in the brick masonry structure with single surface reinforcement according to the application (when the shear key pit is a circular platform pit);

[0040] Figure 21 The arrangement diagram of the embedded steel bar in the brick masonry structure with single-face reinforcement layer (the shear key groove is a circular truncated cone groove) according to the present application;

[0041] Figure 22 The installation diagram of the steel mesh in the brick masonry structure with single-face reinforcement layer (the shear key groove is a circular truncated cone groove) according to the present application;

[0042] Figure 23 The coating diagram of the reinforcement layer in the brick masonry structure with single-face reinforcement layer (the shear key groove is a circular truncated cone groove) according to the present application;

[0043] In the figure, 1 is a brick masonry, 2 is an embedded steel bar, 3 is a steel mesh, 4 is a reinforcement layer, 5 is a mortar joint, 6 is a shear key, 7 is a tuck joint groove, and 8 is an embedded steel bar hole. DETAILED DESCRIPTION

[0044] Specific implementation one: combined Figures 1 to 23 In this embodiment, a brick masonry structure with a single-face reinforcement layer is provided, which comprises a brick masonry 1, and a reinforcement layer 4 arranged on one side of the brick masonry 1. The reinforcement layer 4 is positioned with the brick masonry 1 through a hanging net structure, and is fixedly connected with the brick masonry 1.

[0045] The hanging net structure comprises a plurality of embedded steel bars 2 and a plurality of steel meshes 3. The plurality of embedded steel bars 2 are evenly inserted into the side of the brick masonry 1 where the reinforcement layer 4 is arranged, and the axis of each embedded steel bar 2 is arranged perpendicularly to the brick masonry 1. The end of each embedded steel bar 2 extends to the outside of the brick masonry 1. The plurality of steel meshes 3 are evenly laid on the side of the brick masonry 1 where the reinforcement layer 4 is arranged, and each steel mesh 3 is fixedly connected with the end of the corresponding plurality of embedded steel bars 2 through a binding belt. The reinforcement layer 4 is hung on the plurality of steel meshes 3 and is fixedly connected with the brick masonry 1.

[0046] Specific implementation two: combined Figures 1 to 23 In this embodiment, the difference from the specific implementation one is that the reinforcement layer 4 is a UHPC120 concrete reinforcement layer. The other components and connection modes are the same as those of the specific implementation one.

[0047] Specific implementation three: combined Figures 1 to 23 In this embodiment, the difference from the specific implementation two is that the thickness of the reinforcement layer 4 ranges from 20mm to 80mm. The other components and connection modes are the same as those of the specific implementation two.

[0048] In combination with the specific embodiments one to three, the application provides a new idea for reinforcing the brick masonry, that is, reinforcing the existing brick masonry 1 through the hanging net structure composed of the non-reinforced concrete and the embedded steel bar 2 and the steel mesh 3. In the existing common reinforcing method, the reinforcing thickness of the masonry wall is clearly required. The reinforcing layer of the reinforcing method of the ordinary concrete and the steel frame is relatively thick, occupies a large space indoors and outdoors of the building, and reduces the effective use area. At the same time, with the increase of the reinforcing layer thickness, the self-weight of the structure is also increased, that is, the upper load of the structure is increased, and the bearing capacity requirement of the foundation is also increased, so whether the bearing capacity of the original foundation can meet the requirement after the reinforcement is involved. The steel bars in the existing reinforcing method need to be anchored and connected with the foundation, so a large area of excavation needs to be carried out near the foundation, which will cause a certain influence on the stability of the original foundation, may increase the settlement of the original building, and further cause the cracking of the upper brick masonry structure. Moreover, the ordinary reinforced concrete has poor durability, and the steel bars are prone to rust, especially in cold regions, coastal areas or humid environments, the concrete cracking and the steel bar rusting are more serious, which affects the use function of the structure, shortens the service life of the structure, and increases the later maintenance work. The reinforcing structure provided by the application discards the traditional steel frame structure, but uses the hanging net structure composed of the embedded steel bar 2 and the steel mesh 3 as the positioning component of the reinforcing layer. When the embedded steel bar 2 is arranged, a large area of excavation is not needed for the brick masonry 1, which maximally ensures the stability of the brick masonry 1 body. Meanwhile, the application uses the non-reinforced UHPC120 concrete and the hanging net structure to cooperate to complete the reinforcing work. In the reinforcing process, the construction personnel directly adopts the pressing and smearing construction method on the hanging net structure to form once (when the traditional steel frame structure is used, the pouring method is adopted to construct the reinforcing layer), the UHPC120 has good fluidity and excellent adhesion, and the phenomenon of the UHPC120 dropping and bagging after being pressed and smeared does not occur. Meanwhile, the UHPC120 has high toughness, and even if the brick masonry absorbs part of the water in the UHPC120, the UHPC120 surface cannot appear shrinkage micro-cracks;

[0049] The UHPC120 has super-high strength, so under the same load action, the compression area of the UHPC120 is far less than that of the ordinary concrete, thereby reducing the thickness of the reinforcing surface layer and releasing more use space. In the brick masonry structure reinforcement, because the bearing capacity of the brick masonry is particularly low, the high bearing capacity of the reinforcing layer cannot be fully utilized, which causes the waste of materials and labor. Therefore, the thickness of the reinforcing surface is reasonably optimized according to the stress condition of the reinforcing position, the reinforcing thickness is further reduced, and the use space is increased.

[0050] Combined with the high strength of UHPC120 and the optimized design of the reinforcing surface, the thickness of the reinforcing surface is minimized, while the engineering quality is ensured, so that the self-weight of the structure is greatly reduced, and the requirement for the bearing capacity of the foundation is lowered.

[0051] UHPC120 has high resistance to freeze-thaw and corrosion of sulfate and chloride salts. In special environments such as cold regions, humid areas and coastal areas, there will be no cracking, swelling, falling off and steel corrosion due to repeated freeze-thaw cycles and corrosion of sulfate and chloride salts. Thus, the service life of the structure is increased, and the maintenance work due to insufficient durability in the later period is reduced.

[0052] Specific implementation method four: combined with Figures 1 to 23 In this embodiment, the difference between this embodiment and the specific implementation method three is that the end of the planted steel bar 2 is arranged in a hook shape. The other components and connection methods are the same as those of the specific implementation method three.

[0053] In this way, the hook-shaped design can increase the contact area between the planted steel bar 2 and the steel mesh 3, and facilitate the binding work between the end of the planted steel bar 2 and the steel mesh 3.

[0054] Specific implementation method five: combined with Figures 1 to 23 In this embodiment, the difference between this embodiment and the specific implementation method four is that a plurality of shear key recesses are uniformly distributed on one side of the reinforcing layer 4 in the brick masonry 1, and each shear key recess is correspondingly arranged with a planted steel bar 2. The depth direction of each shear key recess is the same as the thickness direction of the brick masonry 1. A planted steel bar hole 8 is processed at the center of the bottom of each shear key recess. Each planted steel bar 2 is correspondingly inserted into a planted steel bar hole 8 and fixedly connected with the brick masonry 1 through planted steel bar glue. The other components and connection methods are the same as those of the specific implementation method four.

[0055] Specific implementation method six: combined with Figures 1 to 23 In this embodiment, the difference between this embodiment and the specific implementation method five is that the shear key recess is filled with a shear key 6, and the end of the shear key 6 close to the reinforcing layer 4 is coplanar with the side of the brick masonry 1 provided with the reinforcing layer 4. The shear key 6 is sleeved on the planted steel bar 2 and supports and fixes the end of the planted steel bar 2. The other components and connection methods are the same as those of the specific implementation method five.

[0056] Specific implementation method seven: combined with Figures 1 to 23 In this embodiment, the difference between this embodiment and the specific implementation method six is that the shear key 6 is a rectangular key, a cylindrical key, a circular truncated cone key or a prismatic key, and the shear key recess is a rectangular recess, a cylindrical recess, a circular truncated cone recess or a prismatic recess matched with the shear key 6. The other components and connection methods are the same as those of the specific implementation method seven.

[0057] Referring to specific embodiments four to seven, the anchoring hole 8 is used to accommodate the anchoring bar 2. The depth of the anchoring hole 8 is 100mm to 250mm, and the diameter of the anchoring hole 8 is matched with the end face diameter of the anchoring bar 2. The shear key recess is used to accommodate the shear key 6. Therefore, the depth of the shear key recess is much smaller than the depth of the anchoring hole 8. The shear key 6 is used to support and reinforce the end of the anchoring bar 2, ensuring the stability of the anchoring bar 2 and the steel mesh 3 during and after connection. In actual work, the shear key 6 can be selected in various ways according to construction requirements. The most common are cuboid keys and cylindrical keys. These two types of shear key 6 are suitable for use... The processing of shear key recesses is relatively easy. They can be directly drilled into the brick masonry 1 using a water drill, resulting in relatively low processing costs and difficulties. In addition to cuboid keys and cylindrical keys, frustum keys or truncated pyramid keys can also be used. The structural characteristics of these two types of keys are that the end face size near the interior of the brick masonry 1 is smaller, while the end face size near the reinforcement layer is larger. The advantage of these two types of keys is that they can provide stronger fastening force and can play a good end fixing role when the length of the rebar 2 is short. The disadvantage of this method is that the processing of shear key recesses is relatively difficult. The above-mentioned key types should be selected by the staff according to the actual construction situation.

[0058] Specific implementation method eight: Combination Figures 1 to 23 This embodiment differs from specific embodiment seven in that a groove 7 is machined at the mortar joint 5 on the side of the brick masonry 1 where the reinforcing layer 4 is located. The reinforcing layer 4 extends into the groove 7 and is fixedly connected to the brick masonry 1. The depth of the groove 7 is greater than 20 mm, and the groove coverage is 50% to 60%. Other components and connection methods are the same as in specific embodiment eight.

[0059] This setting is to allow UHPC120 concrete to penetrate into the brick masonry 1 when the reinforcement layer 4 is applied, thereby strengthening the connection between the reinforcement layer 4 and the brick masonry 1 after the reinforcement layer 4 is formed. In this embodiment, the joint deduction rate is the sum of the area of ​​the mortar joints deducted from the reinforcement interface and the area of ​​all mortar joints.

[0060] Specific Implementation Method Nine: Combining Figures 1 to 23 This embodiment differs from Specific Embodiment Eight in that the anchoring rate of the anchor 2 is 0.02% to 0.04%, the anchoring spacing is 200mm to 300mm, the anchoring depth is 100mm to 250mm, and the end face diameter of the anchor is 6mm to 8mm. Other components and connection methods are the same as in Specific Embodiment Eight.

[0061] The arrangement is made in consideration that the UHPC 120 used in the application has high adhesion, and when the UHPC 120 is used for reinforcement, a small amount of anchor bar can be planted on the original brick masonry reinforcement surface, and then the construction is pressed and smoothed. This method does not need to be connected and anchored with the foundation or the upper structure of the brick masonry reinforcement surface, so as not to affect the stability of the foundation of the brick masonry structure. At the same time, with the reduction of the anchor bar rate, the increase of the anchor bar spacing and the reduction of the thickness of the anchor bar, the overall weight of the reinforced part is greatly reduced, which greatly reduces the bearing burden of the original masonry 1, and is beneficial to improve the service life of the masonry 1. In the embodiment, the anchor bar rate is the total area of the shear reinforcement section of the reinforced layer and the brick masonry adhesion surface / the adhesion area of the reinforced layer and the brick masonry, the anchor bar is arranged in a plum blossom shape, and the anchor bars are staggered during arrangement; the number of anchor bars meets the technical requirements of the anchor bar rate, the anchor bar spacing and the anchor bar depth.

[0062] Specific implementation ten: in combination Figures 1 to 23 In this embodiment, the difference between this embodiment and specific implementation eight is that the size of the steel mesh 3 is at least 250mm*250mm, the distance between the two adjacent steels in the steel mesh 3 is 50mm-80mm, and the end face diameter of the steel in the steel mesh 3 is 6mm-12mm. The other components and connection modes are the same as those in specific implementation nine.

[0063] The arrangement is made in consideration that the steel mesh 3 is used as the positioning and internal support structure of the reinforcement layer 4, and itself needs to have a certain strength, and the single mesh support design is also used in the application. Therefore, the size of the steel mesh 3 should not be too small, and the spacing size and the end face diameter size of the steel in the steel mesh 3 provided in this embodiment are sufficient to achieve the expected support strength. On this basis, reducing the spacing size of the steel or increasing the end face diameter size will increase the weight of the steel mesh 3, easily increase the upper load of the brick masonry 1, and is not conducive to the stability of the reinforcement layer in use.

[0064] The above-mentioned specific embodiments of the utility model have been disclosed, but the utility model is not limited thereto. Any person skilled in the art can make some changes or modifications to the above-mentioned disclosed structure and technical content without departing from the technical solution range of the utility model to obtain equivalent embodiments, but any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the utility model shall still belong to the technical solution range of the utility model.

[0065] Working principle:

[0066] The brick masonry structure provided in the application needs to remove the impurities and dirt on the surface of the existing brick masonry wall 1, deduct the mortar joint 5 on the reinforced side of the existing brick masonry wall 1, form the slot 7, mark the position of the embedded steel bar on the existing brick masonry wall 1, and chisel the shear key recess for accommodating the shear key 6 at the position of the embedded steel bar; drill a hole in the center of the shear key recess, clean the hole, inject the embedded steel bar glue, implant the embedded steel bar 2, and maintain, after the embedded steel bar glue reaches the strength, clean the floating dust on the surface of the brick masonry wall and bind the structural steel mesh 3 at the end of the embedded steel bar 2. Finally, the UHPC120 is used for single-sided troweling to the designed thickness and maintenance.

[0067] After the masonry wall is reinforced, the stress performance of the masonry wall is determined by the axial compression detection method, the bricks of the masonry wall adopt the old bricks of buildings, the test piece adopts the bricklaying mode of one order and one ding, and the flatness and perpendicularity of the masonry are ensured by the level and the level instrument respectively. After the test piece is built, the embedded steel bar is planted. After the embedded steel bar is bound, the axial compression stress test is carried out, and the related performance of the masonry wall is analyzed.

[0068] Taking the cuboid shear key 6 as an example, the specific construction process and experimental process are as follows:

[0069] Construction process:

[0070] Step 1: remove the impurities and dirt on the surface of the brick masonry wall body test piece first;

[0071] Step 2: the mortar joint 5 on the reinforced side of the existing brick masonry 1 is treated to form the slot 7, the slot depth is not less than 20 mm, and the slot rate is 55%;

[0072] Step 3: mark the position of the embedded steel bar on the existing brick masonry 1, the embedded steel bar is arranged in the form of plum blossom, and is staggered with each other; the number of embedded steel bars meets the technical requirements of the embedded steel bar rate, the embedded steel bar spacing and the embedded steel bar depth, the embedded steel bar rate is 0.1%, the embedded steel bar spacing is 240 mm, the embedded steel bar depth is 160 mm, the depth does not include the depth of the shear key 6, the embedded steel bar diameter is 6 mm, the recess for accommodating the shear key 6 is chiseled at the embedded steel bar position, the recess shear key size is 150 mm in width, the height is controlled in 50 mm, the depth is controlled in 40 mm, and the hole is drilled at the bottom of the recess to form the embedded steel bar hole 8;

[0073] Step 4: inject the embedded steel bar glue into the recess shear key 6 and the embedded steel bar hole 8, and insert the embedded steel bar 2 into the recess shear key 6 and the embedded steel bar hole 8;

[0074] Step 5: after the embedded steel bar glue solidifies to reach the designed strength after 24 hours, the welded structural steel mesh 3 is bound at the end of the embedded steel bar 2, the size of the steel mesh 3 is at least 250 mm x 250 mm, the diameter of the steel bar in the steel mesh 3 is 6 mm, the distance between the steel bars in the steel mesh 3 is 50 mm, and the distance from the edge of the steel mesh 3 to the edge of the reinforced interface is 60 mm.

[0075] Step 6: On the fixed reinforcement mesh 3, the existing brick masonry structure is reinforced by single-sided pressing and smoothing with UHPC120, and the reinforcement thickness of UHPC120 is 50mm.

[0076] Experimental process:

[0077] The brick masonry wall formed by one straight and one 1 / 4 brick masonry is reinforced, and then the axial compression performance test of the UHPC120 single-sided reinforced low-strength brick masonry structure is carried out. The height-width ratio of the test masonry wall is controlled within 1.2-1.8, the reinforcing adhesive used is a reinforced epoxy reinforcing adhesive A level, the reinforcing steel used for reinforcing and structural reinforcement mesh is HRB400 with a diameter of 6mm, and the length-width range of the structural reinforcement mesh is 250-300mm. The reinforcing depth is 160mm. During the test, the relative displacement of the two sides of the reinforced test piece and the strain change of the internal reinforcement mesh are measured. When the UHPC single-sided reinforcement thickness is 10-50mm, the cracking load increases by 1%-5%, and the ultimate load increases by 100%-108%. By measuring the axial compression performance and eccentric compression bearing capacity of the wall, the stress performance of the wall is evaluated.

Claims

1. A brick masonry structure having a single-sided reinforcement layer, comprising a brick masonry (1), characterized in that: One side of the brick masonry (1) is provided with a reinforcing layer (4), the reinforcing layer (4) is positioned with the brick masonry (1) through a hanging net structure, and the reinforcing layer (4) is fixedly connected with the brick masonry (1); The hanging net structure comprises a plurality of planted bars (2) and a plurality of steel mesh sheets (3), the plurality of planted bars (2) are evenly inserted into one side of the brick masonry (1) provided with the reinforcing layer (4), and the axis of each planted bar (2) is arranged vertically to the brick masonry (1), the end of each planted bar (2) extends to the outside of the brick masonry (1), and the plurality of steel mesh sheets (3) are evenly laid on one side of the brick masonry (1) provided with the reinforcing layer (4), and each steel mesh sheet (3) is fixedly connected with the corresponding plurality of planted bars (2) through a binding belt, and the reinforcing layer (4) is hung on the plurality of steel mesh sheets (3) and fixedly connected with the brick masonry (1).

2. A brick masonry structure having a single face reinforced layer as claimed in claim 1 wherein: The reinforcing layer (4) is a UHPC120 concrete reinforcing layer.

3. A brick masonry structure having a single face reinforced layer as claimed in claim 2 wherein: The thickness of the reinforcing layer (4) ranges from 20mm to 80mm.

4. A brick masonry structure having a single face reinforced layer as claimed in claim 3 wherein: The end of the planted bar (2) is arranged in a hook shape.

5. A brick masonry structure having a single face reinforced layer as claimed in claim 4 wherein: A plurality of shear key recesses are evenly processed on one side of the brick masonry (1) provided with the reinforcing layer (4), and each shear key recess is arranged correspondingly to one planted bar (2), the depth direction of each shear key recess is the same as the thickness direction of the brick masonry (1), and a planted bar hole (8) is processed at the center of the bottom of each shear key recess, and each planted bar (2) is correspondingly inserted into one planted bar hole (8) and fixedly connected with the brick masonry (1) through planted bar glue.

6. A brick masonry structure having a single face reinforced layer as claimed in claim 5 wherein: The shear key recess is filled with a shear key (6), and the end of the shear key (6) close to the reinforcing layer (4) is arranged in the same plane as one side of the brick masonry (1) provided with the reinforcing layer (4), and the shear key (6) is sleeved on the planted bar (2) and supports and fixes the end of the planted bar (2).

7. A brick masonry structure having a single face reinforced layer as claimed in claim 6 wherein: The shear key (6) is a rectangular key, a cylindrical key, a circular truncated cone key or a prismatic key, and the shear key recess is a rectangular recess, a cylindrical recess, a circular truncated cone recess or a prismatic recess matched with the shear key (6).

8. A brick masonry structure having a single face reinforced layer as claimed in claim 6 wherein: A jointing slot (7) is processed at the mortar joint (5) of one side of the brick masonry (1) provided with the reinforcing layer (4), the reinforcing layer (4) extends into the jointing slot (7) and is fixedly connected with the brick masonry (1), the depth of the jointing slot (7) is greater than 20mm, and the jointing rate is 50% to 60%.

9. A brick masonry structure having a single face reinforced layer as claimed in claim 6 wherein: The planted bar rate of the planted bar (2) is 0.02% to 0.04%, the planted bar spacing is 200mm to 300mm, the planted bar depth is 100mm to 250mm, and the end face diameter of the planted bar is 6mm to 8mm.

10. A brick masonry structure having a single face reinforced layer as claimed in claim 6 wherein: The size of the steel mesh sheet (3) is at least 250mm*250mm, the distance between the two adjacent steels in the steel mesh sheet (3) is 50mm to 80mm, and the end face diameter of the steel in the steel mesh sheet (3) is 6mm to 12mm.

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