Reinforcing method for brick-concrete complex structure

Abstract

The application provides a brick-concrete complex structure reinforcing method, and belongs to the technical field of building construction. The brick-concrete complex structure reinforcing method comprises the following steps: erecting support in the interior and middle position of the brick-concrete complex structure, excavating the added foundation contour of the brick-concrete complex structure, releasing the foundation cutting line and adding the outer contour line of the foundation, chiseling away the strip foundation and the rubble foundation by using the static cutting mode, installing the design drawing reserved pile hole on the brick-concrete complex structure, fixing and connecting the vertical main reinforcement of the buttress column with the structural reinforcement on the brick-concrete complex structure, opening the shear key hole, fixing and connecting the ring beam ring reinforcement with the original wall body of the brick-concrete complex structure, fixing the buttress column and the beam on the brick-concrete complex structure in sequence, and pouring the concrete. The method can solve the problem that the existing reinforcing method of the brick-concrete complex structure greatly disturbs and damages the wall to be reinforced and does not change the stress mode of the original structure form.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and more specifically, relates to a method for reinforcing complex brick-concrete structures. Background Technology

[0002] Reinforcing complex brick-concrete structures is an important and challenging issue. With the accelerating pace of urbanization in my country, many older buildings require renovation and reinforcement. As a common building form, the complexity and diversity of brick-concrete structures make reinforcement work even more difficult. Firstly, while the brick-concrete materials in complex structures typically have high density and strength, they also present many potential problems. For example, gaps exist between the bricks, leading to loose connections and affecting the overall strength and stability of the building. Furthermore, over long-term use, the bricks may crack or break, threatening the building's safety. Secondly, reinforcing complex brick-concrete structures presents numerous challenges. Firstly, the reinforcement work must consider the overall structure of the building to avoid causing additional damage and impact. Secondly, the selection of materials and construction methods must be carefully considered to ensure the reliability and durability of the reinforcement effect. Finally, cost and time factors must be taken into account to ensure the reinforcement work can be completed within a reasonable timeframe without affecting the normal use of the building.

[0003] Existing reinforcement methods for complex brick-concrete structures cause significant disturbance and damage to the walls to be reinforced, are difficult to effectively preserve the architectural features of the buildings to be reinforced, do not change the stress pattern of the original structural form, and are difficult to guarantee the seismic performance of the reinforced complex brick-concrete structures. Summary of the Invention

[0004] In view of this, the present invention provides a reinforcement method for complex brick-concrete structures, which can solve the problems of existing reinforcement methods for complex brick-concrete structures causing large disturbance and damage to the wall to be reinforced, making it difficult to effectively preserve the architectural features to be reinforced, failing to change the stress mode of the original structural form, and making it difficult to guarantee the seismic performance of the reinforced complex brick-concrete structure.

[0005] This invention is implemented as follows:

[0006] This invention provides a method for reinforcing complex brick-concrete structures, comprising the following steps:

[0007] S10: Erect supports inside and in the middle of complex brick-concrete structures, and remove the top slab and wall plaster;

[0008] S20: According to the basic design drawings, the outline of the new foundation of the complex brick-concrete structure is excavated, and the foundation cutting line and the outer outline of the new foundation are marked according to the reinforcement and expansion range of the complex brick-concrete structure.

[0009] S30: On the aforementioned brick-concrete complex structure, strip foundations and rubble foundations are removed by static cutting, and the steel bars of the spreader beam, the ring foundation, and the anchor bars of the anchor static pressure pile are tied.

[0010] S40: Install the pre-reserved pile holes in the design drawings on the brick-concrete complex structure, fix the vertical main reinforcement of the buttress column to the structural reinforcement on the brick-concrete complex structure, and then pour concrete.

[0011] S50: Install the anchor static pressure pile into the pile hole and weld it in place;

[0012] S60: According to the design drawings, shear key openings are made in the original wall of the complex brick-concrete structure, and shear beam reinforcement is tied.

[0013] S70: Pre-fabricate the ring beam reinforcement in the ring beam and fix the ring beam reinforcement to the original wall of the brick-concrete complex structure.

[0014] S80: The buttresses and beams are fixed to the complex brick-concrete structure in sequence, and concrete is poured.

[0015] S90: Apply the reinforced mesh polymer mortar to the wall surface of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

[0016] The technical effects of the reinforcement method for complex brick-concrete structures provided by this invention are as follows: Supports are erected inside and in the middle of the complex brick-concrete structure; the top slab and wall plaster are removed; according to the foundation design drawings, the outline of the new foundation for the complex brick-concrete structure is excavated; based on the reinforcement range of the complex brick-concrete structure, the foundation cutting line and the outer outline of the new foundation are marked; strip foundations and rubble foundations are removed from the complex brick-concrete structure using static cutting; and the steel reinforcement of the spreader beam, the ring foundation reinforcement, and the anchor rod reinforcement of the static pressure piles are tied; pre-reserved pile holes are installed on the complex brick-concrete structure; after the vertical main reinforcement of the buttress column is fixedly connected to the structural reinforcement of the complex brick-concrete structure, concrete is poured; the static pressure piles are installed into the pile holes and welded for fixation; and the foundation is then reinforced on the original wall of the complex brick-concrete structure. According to the design drawings, shear key openings are made, and shear beam reinforcement is tied. Ring beam reinforcement is prefabricated and fixedly connected to the original wall of the complex brick-concrete structure. Buttresses and beams are then sequentially fixed to the complex brick-concrete structure, followed by concrete pouring. Reinforced mortar is then applied to the wall surface of the complex brick-concrete structure, completing the reinforcement construction. This process minimizes disturbance and damage to the wall to be reinforced, effectively preserves the architectural style, and provides good reinforcement. It alters the stress pattern of the original structure, increases its service life, and addresses safety issues such as insufficient wall thickness, inadequate height-to-thickness ratio, insufficient strength of the original brick walls and mortar, lack of structural columns on the exterior walls, and absence of concrete reinforcement frames around doorways. This ensures the complex brick-concrete structure meets the corresponding seismic resistance requirements.

[0017] Based on the above technical solution, the reinforcement method for complex brick-concrete structures of the present invention can be further improved as follows:

[0018] The specific steps for erecting supports inside and in the middle of the complex brick-concrete structure, and for removing the top slab and wall plaster include:

[0019] The first step is for construction workers to build a three-dimensional model of the complex brick-concrete structure based on its shape, structure, size, and material, and then determine the location of the support points of the complex brick-concrete structure based on the three-dimensional model.

[0020] The second step is to install internal supports inside the complex brick-concrete structure to apply forces to the interior of the complex brick-concrete structure.

[0021] The third step is to set a support shaft at the middle position of the brick-concrete complex structure according to the determined position of the support point. The support shaft abuts against the wall of the brick-concrete complex structure to apply a supporting force to the brick-concrete complex structure.

[0022] The fourth step is to recreate the applied internal support and the support shaft in the three-dimensional model at a 1:1 scale. The construction personnel preset different force application directions and magnitudes to determine the stability of the complex brick-concrete structure.

[0023] Fifth step: First remove the top plate and wall plaster near the internal support and the support axis, and then gradually remove them to both sides;

[0024] The sixth step is to ensure the stability of the complex brick-concrete structure after demolition by cleaning up the demolished materials.

[0025] The construction workers construct a three-dimensional model of the complex brick-concrete structure based on its shape, structure, size, and material. The specific steps for determining the location of the support points of the complex brick-concrete structure based on this three-dimensional model include:

[0026] The first step is to collect and analyze information such as the shape, structure, size, and materials of complex brick-concrete structures;

[0027] The second step is to import the above information into software such as SolidWorks, CATIA, and Autodesk Inventor to build a three-dimensional model of the complex brick-concrete structure.

[0028] The third step is to determine the location of the support points in the 3D model based on the shape and size of the complex brick-concrete structure.

[0029] The fourth step is to check whether the location of the support points is reasonable and make necessary adjustments.

[0030] The internal supports are multiple and evenly distributed inside the brick-concrete complex structure, with their two ends fixedly connected to the walls and ground of the brick-concrete complex structure.

[0031] The specific steps of first removing the top plate and wall plaster near the internal support and the support axis, and then gradually removing them to both sides, include:

[0032] The first step is to remove the top plate and wall plaster near the internal support and the support shaft to determine the pressure on the internal support and the support shaft, and to ensure the stability of the complex brick-concrete structure.

[0033] The second step involves dismantling the top slab and wall plaster sequentially from the inner support and the support location towards both sides, while testing the stability of the complex brick-concrete structure during the dismantling process.

[0034] Furthermore, the support shaft is a diagonal brace, and the angle between the diagonal brace and the horizontal ground is 45-60°;

[0035] The bottom of the diagonal brace is welded with a horizontal support foot at the position where it contacts the ground. Multiple anchor rods are provided at the bottom of the horizontal support foot. The anchor rods are used to fix the diagonal brace to the ground and provide support to the interior of the brick-concrete complex structure. The bottom of the horizontal support foot is provided with a raised layer. Friction teeth are provided at the position where the raised layer contacts the ground. The friction teeth are used to increase the friction between the diagonal brace and the ground.

[0036] The top of the diagonal brace is fixedly connected to the wall of the complex brick-concrete structure to provide support for the complex brick-concrete structure.

[0037] The diagonal brace has auxiliary rods symmetrically arranged on both sides, moving away from the diagonal brace. The projection of the auxiliary rods onto the ground is symmetrical about the projection of the diagonal brace onto the ground. This is used to reduce the stress generated when the diagonal brace applies force to the brick-concrete complex structure, and to assist the diagonal brace in supporting the brick-concrete complex structure.

[0038] The angle between the auxiliary rod and the side of the diagonal brace is 30-45°.

[0039] The anchor rod is welded and fixed to the bottom of the diagonal brace, and its length is 1 / 2 of the length of the diagonal brace. It is used to insert into the ground to support the complex brick-concrete structure.

[0040] Furthermore, the specific steps of excavating the outline of the new foundation for the complex brick-concrete structure according to the basic design drawings, and marking the foundation cutting line and the outer outline of the added foundation based on the reinforcement and expansion range of the complex brick-concrete structure, include:

[0041] The first step is to excavate the outline of the new foundation of the complex brick-concrete structure according to the basic design drawings, so as to reduce the disturbance to the original foundation brick wall of the complex brick-concrete structure.

[0042] The second step is to mark out the foundation cutting lines based on the increased reinforcement range of the complex brick-concrete structure.

[0043] The third step is to mark out the outer contour of the foundation based on the increased reinforcement range of the complex brick-concrete structure.

[0044] The fourth step is to draw the basic cutting lines and the basic outer contour lines on the complex brick-concrete structure using lines of different colors.

[0045] The foundation cutting line refers to the line that needs to be cut on the foundation during the reinforcement process. The foundation outer contour line refers to the line that needs to be extended outward on the foundation during the reinforcement process.

[0046] Furthermore, the specific steps for removing the strip foundation and rubble foundation on the complex brick-concrete structure using static cutting, and tying the reinforcement bars of the spreader beam, the ring foundation, and the anchor bars of the anchor static pressure piles include:

[0047] The first step is to determine the cutting range and cutting depth based on the foundation cutting lines drawn on the complex brick-concrete structure.

[0048] The second step is to clean the cutting area, ensuring there are no debris or obstacles, and then set the cutting parameters.

[0049] The third step is to use a laser cutting machine to cut the material step by step according to the predetermined cutting parameters;

[0050] Fourth, after cutting, clean the cutting area, removing any remaining gravel and concrete to ensure the ground is flat.

[0051] Fifth step: Check the cutting results to ensure that the foundation has been completely removed and there are no residues.

[0052] Step 6: For the location of the spreader beam, make an opening in the bottom wall of the complex brick-concrete structure, and tie the steel reinforcement of the spreader beam according to the design drawings;

[0053] Step 7: The ring-shaped steel bars are pre-processed according to the ring direction and dimensions on site, and the main steel bars of the beam and the foundation reinforcing bars are connected by straight thread sleeves in sections.

[0054] Step 8: According to the design drawings for sealing the static pressure piles, connect and fix the anchor bars of the static pressure piles to the reinforcement bars of the foundation slab.

[0055] A laser cutting machine is a cutting device that uses a laser beam as its light source. It can be used to cut various materials, such as metals, plastics, and wood. Laser cutting machines are characterized by high precision, high speed, high efficiency, and high quality, and are therefore widely used in industrial production. The working principle of a laser cutting machine is to utilize the high energy density and high monochromaticity of the laser beam to cause the material to evaporate or vaporize instantaneously, thus creating a high-temperature zone in the cutting area while leaving the non-cutting areas unaffected. The laser beam can be focused using lenses or mirrors to achieve even higher energy density and more accurate cutting results. The operating interface of a laser cutting machine typically includes a control panel and a computer control system, allowing for functions such as laser beam adjustment and cutting path planning. Laser cutting machines are usually equipped with multiple cutting heads, allowing selection of different heads based on different materials and cutting requirements. Laser cutting machines offer many advantages, such as high precision, high speed, good cutting quality, and ease of operation, and are therefore widely used in industrial production.

[0056] Furthermore, the specific steps for installing pre-reserved pile holes in the brick-concrete complex structure, fixing the vertical main reinforcement of the buttress column to the structural reinforcement of the brick-concrete complex structure, and then pouring concrete include:

[0057] The first step is to install the pre-drilled pile holes from the design drawings on the complex brick-concrete structure.

[0058] The second step is to connect and fix the vertical main reinforcement bars of the buttress column to the foundation reinforcement bars in advance according to the predetermined position;

[0059] The third step is to weld and secure the vertical main reinforcement bars of the buttress column.

[0060] The fourth step is concrete pouring. First, pour concrete at the location of the spreader beam to ensure the compactness of the foundation concrete.

[0061] Furthermore, the specific steps for installing the anchor static pressure pile into the pile hole and welding it for fixation include:

[0062] The first step is to lift the anchor static pressure pile and then perform vertical correction;

[0063] The second step is to place the anchor static pressure pile into the pile hole using a tower crane;

[0064] The third step involves the construction workers using a theodolite to determine the verticality of the anchor static pressure pile.

[0065] The fourth step is to ensure the verticality of the pile axis of the anchor static pressure pile and then drive the pile.

[0066] The fifth step is to weld and fix the anchor static pressure pile to the anchor rod reinforcement of the anchor static pressure pile after the pile structure is driven.

[0067] Furthermore, the specific steps for creating shear key openings in the original brick-concrete complex structure wall according to the design drawings and tying the shear beam reinforcement include:

[0068] The first step is to install the design drawings and make holes in the original brick-concrete complex structure of the wall, with the center-to-center distance of the holes controlled within 2m.

[0069] The second step is to remove the broken bricks and debris from the opening after it is completed; for the damaged wall opening, find masonry bricks that are the same as or similar to the original brick wall to fill it in, preserving the original appearance of the brick wall.

[0070] The third step is to tie the shear beam reinforcement according to the design drawings, and to bend the anchorage of the reinforcement that does not meet the anchorage length requirement.

[0071] The specific steps for prefabricating the ring beam reinforcement in advance and fixing the ring beam reinforcement to the original wall of the complex brick-concrete structure include:

[0072] The first step is to fabricate the ring reinforcement bars for the ring beam in advance according to the design drawings;

[0073] The second step is to weld and fix the ring beam's annular reinforcing bars to the original wall of the complex brick-concrete structure.

[0074] Furthermore, the specific steps for sequentially fixing the buttresses and beams to the complex brick-concrete structure and then pouring concrete include:

[0075] The first step is to fix the buttresses and beams to the complex brick-concrete structure in sequence;

[0076] The second step is to remove the weak bonding layer at the connection between the buttress columns and beams;

[0077] The third step is to first pour concrete at the bottom shear key location to avoid voids.

[0078] Furthermore, the specific steps for applying the reinforced concrete mortar to the wall surface of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure include:

[0079] The first step is to set up safety support and a work platform;

[0080] The second step is to clean and repair the original structural components of the complex brick-concrete structure.

[0081] The third step is to install the steel mesh after surface treatment;

[0082] The fourth step is to prepare polymer mortar and apply it to the wall surface of the complex brick-concrete structure.

[0083] The fifth step is to cure the polymer mortar according to its characteristics;

[0084] Step 6: Remove the internal supports and support shafts of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

[0085] Compared with existing technologies, the beneficial effects of the reinforcement method for complex brick-concrete structures provided by this invention are as follows: By erecting supports inside and in the middle of the complex brick-concrete structure, removing the top slab and wall plaster, excavating the outline of the new foundation according to the foundation design drawings, marking the foundation cutting line and the outer outline of the new foundation based on the reinforcement range of the complex brick-concrete structure, removing the strip foundation and rubble foundation on the complex brick-concrete structure using static cutting, and binding the steel reinforcement of the spreader beam, the ring foundation reinforcement, and the anchor rod reinforcement of the static pressure piles, installing the pre-reserved pile holes on the complex brick-concrete structure, fixing the vertical main reinforcement of the buttress column to the structural reinforcement on the complex brick-concrete structure, and then pouring concrete; installing the static pressure piles into the pile holes and welding them in place, thus reinforcing the original complex brick-concrete structure... According to the design drawings, shear key openings are made in the wall, and shear beam reinforcement is tied. Ring beam reinforcement is prefabricated and fixedly connected to the original wall of the complex brick-concrete structure. Buttresses and beams are then sequentially fixed to the complex brick-concrete structure, followed by concrete pouring. Reinforced mortar is then applied to the wall surface of the complex brick-concrete structure, completing the reinforcement construction. This process minimizes disturbance and damage to the wall to be reinforced, effectively preserves the architectural style, and provides good reinforcement. It alters the stress pattern of the original structure, increases its service life, and addresses safety issues such as insufficient wall thickness, inadequate height-to-thickness ratio, insufficient strength of the original brick walls and mortar, lack of structural columns on the exterior walls, and absence of concrete reinforcement frames around doorways. This ensures that the complex brick-concrete structure meets the corresponding seismic resistance requirements. Attached Figure Description

[0086] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0087] Figure 1 This is a flowchart illustrating the operation of a reinforcement method for complex brick-concrete structures. Detailed Implementation

[0088] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0089] like Figure 1 The diagram shows an operation flowchart of a reinforcement method for complex brick-concrete structures provided by this invention. The method includes the following steps:

[0090] S10: Erect supports inside and in the middle of complex brick-concrete structures, and remove the top slab and wall plaster;

[0091] S20: According to the basic design drawings, excavate the outline of the new foundation for the complex brick-concrete structure, and according to the reinforcement and expansion range of the complex brick-concrete structure, mark the foundation cutting line and the outer outline of the new foundation.

[0092] S30: In complex brick-concrete structures, strip foundations and rubble foundations are removed by static cutting, and the steel bars of the spreader beams, ring foundations and anchor rods of the anchor static pressure piles are tied.

[0093] S40: Install the pre-reserved pile holes in the design drawings on the brick-concrete complex structure, fix the vertical main reinforcement of the buttress column to the structural reinforcement on the brick-concrete complex structure, and then pour concrete.

[0094] S50: Install the anchor static pressure pile into the pile hole and weld it in place;

[0095] S60: Shear key openings are made in the original wall of the complex brick-concrete structure according to the design drawings, and shear beam reinforcement is tied.

[0096] S70: Pre-fabricate the ring beam reinforcement and fix the ring beam reinforcement to the original wall of the complex brick-concrete structure.

[0097] S80: The buttresses and beams are fixed to the complex brick-concrete structure in sequence, and concrete is poured.

[0098] S90: Apply reinforced polymer mortar to the wall surface of a complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

[0099] During use, supports are erected inside and in the middle of the complex brick-concrete structure, and the top slab and wall plaster are removed. According to the foundation design drawings, the outline of the new foundation for the complex brick-concrete structure is excavated. Based on the reinforcement and expansion range of the complex brick-concrete structure, the foundation cutting lines and the outer outline of the additional foundation are marked. Strip foundations and rubble foundations are removed from the complex brick-concrete structure using static cutting methods, and the reinforcing bars of the spreader beams, ring foundations, and anchor rods for the static pressure piles are tied. The pre-drilled pile holes are installed on the complex brick-concrete structure, and the vertical main reinforcement of the buttress columns is connected to the brickwork. After the structural steel bars on the complex brick-concrete structure are fixedly connected, concrete is poured; anchor static pressure piles are installed into the pile holes and welded for fixation; shear key openings are made in the original wall of the complex brick-concrete structure according to the design drawings, and shear beam reinforcement is tied; ring beam reinforcement is prefabricated and fixedly connected to the original wall of the complex brick-concrete structure; buttress columns and beams are fixed to the complex brick-concrete structure in sequence, and concrete is poured; reinforced concrete mortar is applied to the wall surface of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

[0100] In the aforementioned technical solution, the specific steps for erecting supports inside and in the middle of the complex brick-concrete structure, and for removing the top slab and wall plaster, include:

[0101] The first step is for construction workers to build a three-dimensional model based on the shape, structure, size, and material of the complex brick-concrete structure, and then determine the location of the support points of the complex brick-concrete structure based on the three-dimensional model.

[0102] The second step is to install internal supports inside the complex brick-concrete structure to apply forces to the interior of the complex brick-concrete structure.

[0103] The third step is to set up a support shaft in the middle of the brick-concrete complex structure according to the determined support point location. The support shaft abuts against the wall of the brick-concrete complex structure to apply support force to the brick-concrete complex structure.

[0104] The fourth step is to recreate the applied internal supports and support shafts in a 1:1 scale in the 3D model. The construction workers preset different force directions and magnitudes to determine the stability of the complex brick-concrete structure.

[0105] Fifth step: First remove the top plate and wall plaster near the internal supports and support axis, then gradually remove them to both sides;

[0106] The sixth step is to ensure the stability of the complex brick-concrete structure after demolition by cleaning up the demolished materials.

[0107] Construction workers construct a 3D model of the complex brick-concrete structure based on its shape, structure, dimensions, and materials. The specific steps for determining the location of support points for this complex structure based on the 3D model include:

[0108] The first step is to collect and analyze information such as the shape, structure, size, and materials of complex brick-concrete structures;

[0109] The second step is to import the above information into software such as SolidWorks, CATIA, and Autodesk Inventor to build a three-dimensional model of the complex brick-concrete structure.

[0110] The third step is to determine the location of the support points in the 3D model based on the shape and size of the complex brick-concrete structure.

[0111] The fourth step is to check whether the location of the support points is reasonable and make necessary adjustments.

[0112] There are multiple internal structures, evenly distributed inside the complex brick-concrete structure, with both ends fixedly connected to the walls and ground of the complex brick-concrete structure.

[0113] The specific steps for removing the top slab and wall plaster closest to the internal supports and support axis, and then gradually removing them towards both sides, include:

[0114] The first step is to remove the top slab and wall plaster near the internal supports and support shafts to determine the pressure on the internal supports and support shafts and ensure the stability of the complex brick-concrete structure.

[0115] The second step involves dismantling the top slab and wall plaster from the area closest to the internal support and from the support location outwards to both sides, while testing the stability of the complex brick-concrete structure during the dismantling process.

[0116] Furthermore, in the above technical solution, the support shaft is a diagonal brace, and the angle between the diagonal brace and the horizontal ground is 45-60°;

[0117] The bottom of the diagonal brace is welded with a horizontal support foot at the contact point with the ground. Multiple anchor rods are installed at the bottom of the horizontal support foot. The anchor rods are used to fix the diagonal brace to the ground and provide support to the interior of the brick-concrete complex structure. The bottom of the horizontal support foot is provided with a raised layer. Friction teeth are installed at the contact point between the raised layer and the ground. The friction teeth are used to increase the friction between the diagonal brace and the ground.

[0118] The top of the diagonal brace is fixedly connected to the wall of the complex brick-concrete structure to provide support for the complex brick-concrete structure.

[0119] The diagonal brace has auxiliary rods symmetrically arranged on both sides, moving away from the diagonal brace. The projection of the auxiliary rods onto the ground is symmetrical about the projection of the diagonal brace onto the ground. This is used to reduce the stress generated when the diagonal brace applies force to the brick-concrete complex structure, and to assist the diagonal brace in supporting the brick-concrete complex structure.

[0120] The angle between the auxiliary rod and the side of the diagonal brace is 30-45°.

[0121] The anchor rod is welded and fixed to the bottom of the diagonal brace. Its length is 1 / 2 of the diagonal brace length. It is used to insert into the ground to support the complex brick-concrete structure.

[0122] Furthermore, in the above technical solution, the specific steps for excavating the outline of the new foundation for the complex brick-concrete structure according to the basic design drawings, and for marking the foundation cutting line and the outer outline of the added foundation based on the reinforcement and expansion range of the complex brick-concrete structure, include:

[0123] The first step is to excavate the outline of the new foundation for the complex brick-concrete structure according to the basic design drawings, so as to reduce the disturbance to the original foundation brick wall of the complex brick-concrete structure.

[0124] The second step is to mark out the foundation cutting lines based on the increased reinforcement range of the complex brick-concrete structure.

[0125] The third step is to mark out the outer contour of the foundation based on the increased reinforcement range of the complex brick-concrete structure.

[0126] The fourth step is to draw the basic cutting lines and basic outer contour lines on the complex brick-concrete structure using lines of different colors.

[0127] Furthermore, in the above technical solution, the specific steps for removing strip foundations and rubble foundations on complex brick-concrete structures using static cutting methods, and for tying the reinforcing bars of the spreader beams, ring foundations, and anchor bolts for the static pressure piles include:

[0128] The first step is to determine the cutting range and depth based on the basic cutting lines drawn on the complex brick-concrete structure;

[0129] The second step is to clean the cutting area, ensuring there are no debris or obstacles, and then set the cutting parameters.

[0130] The third step is to use a laser cutting machine to cut the material step by step according to the predetermined cutting parameters;

[0131] Fourth, after cutting, clean the cutting area, removing any remaining gravel and concrete to ensure the ground is flat.

[0132] Fifth step: Check the cutting results to ensure that the foundation has been completely removed and there are no residues.

[0133] Step 6: For the location of the spreader beam, make an opening in the bottom wall of the complex brick-concrete structure, and tie the steel reinforcement of the spreader beam according to the design drawings;

[0134] Step 7: The ring-shaped steel bars are pre-processed according to the ring direction and dimensions on site, and the main steel bars of the beam and the foundation reinforcing bars are connected by straight thread sleeves in sections.

[0135] Step 8: According to the design drawings for sealing the static pressure piles, connect and fix the anchor bars of the static pressure piles to the reinforcement bars of the foundation slab.

[0136] Furthermore, in the above technical solution, the specific steps for installing pre-reserved pile holes in the brick-concrete complex structure, fixing the vertical main reinforcement of the buttress column to the structural reinforcement of the brick-concrete complex structure, and then pouring concrete include:

[0137] The first step is to install the pre-drilled pile holes from the design drawings on the complex brick-concrete structure;

[0138] The second step is to connect and fix the vertical main reinforcement bars of the buttress column to the foundation reinforcement bars in advance according to the predetermined position;

[0139] The third step is to weld and secure the vertical main reinforcement bars of the buttress column.

[0140] The fourth step is concrete pouring. First, pour concrete at the location of the spreader beam to ensure the compactness of the foundation concrete.

[0141] Furthermore, in the above technical solution, the specific steps for installing the anchor static pressure pile into the pile hole and welding it for fixation include:

[0142] The first step is to lift the anchor static pressure pile and then perform vertical correction;

[0143] The second step is to place the anchor static pressure piles into the pile holes using a tower crane.

[0144] The third step is for construction workers to use a theodolite to determine the verticality of the anchor static pressure pile;

[0145] The fourth step is to ensure the verticality of the pile axis of the anchor static pressure pile and then drive the pile.

[0146] The fifth step is to weld and fix the anchor static pressure pile to the anchor rod reinforcement of the anchor static pressure pile after the pile structure is driven.

[0147] Furthermore, in the above technical solution, the specific steps for creating shear key openings in the original brick-concrete complex structure according to the design drawings and for binding the shear beam reinforcement include:

[0148] The first step is to install the design drawings and make holes in the original brick-concrete complex structure of the wall, with the center-to-center distance of the holes controlled within 2m.

[0149] The second step is to remove the broken bricks and debris from the opening after it is completed; for the damaged wall opening, find masonry bricks that are the same as or similar to the original brick wall to fill it in, preserving the original appearance of the brick wall.

[0150] The third step is to tie the shear beam reinforcement according to the design drawings, and to bend the anchorage of the reinforcement that does not meet the anchorage length requirement.

[0151] The specific steps for prefabricating the ring beam reinforcement and fixing it to the original wall of the complex brick-concrete structure include:

[0152] The first step is to fabricate the ring reinforcement bars for the ring beam in advance according to the design drawings;

[0153] The second step is to weld and fix the ring beam's ring reinforcement to the original wall of the complex brick-concrete structure.

[0154] Furthermore, in the above technical solution, the specific steps for sequentially fixing the buttresses and beams to the complex brick-concrete structure and then pouring concrete include:

[0155] The first step is to fix the buttresses and beams to the complex brick-concrete structure in sequence;

[0156] The second step is to remove the weak bonding layer at the connection between the buttress columns and beams;

[0157] The third step is to first pour concrete at the bottom shear key location to avoid voids.

[0158] Furthermore, in the above technical solution, the specific steps for applying the reinforced concrete mortar to the wall surface of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure include:

[0159] The first step is to set up safety support and a work platform;

[0160] The second step is to clean and repair the original structural components of the complex brick-concrete structure.

[0161] The third step is to install the steel mesh after surface treatment;

[0162] The fourth step is to prepare polymer mortar and apply it to the complex brick-concrete wall surface;

[0163] The fifth step is to cure the polymer mortar according to its characteristics;

[0164] The sixth step is to remove the internal supports and support shafts of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

[0165] Example 1:

[0166] I. Erecting Supports

[0167] The provided inspection and assessment results show that the foundation safety level is Au. The silo wall is rated Cu, exhibiting weathering of sintered bricks, mortar powdering, wall damage, and weakened cross-sections. The silo roof components are rated BU. Based on the current inspection results, a reinforcement plan is determined. After removing the silo roof, the silo walls will be reinforced. Because the silo wall safety level is Cu, appropriate support must be provided during the removal of the silo roof.

[0168] II. Removal of the silo top plate

[0169] 1. Construct internal and external supports for the silo.

[0170] 2. When the roof is demolished, the original capping beam must be properly protected to ensure the integrity of the cylindrical wall.

[0171] 3. The roof should be dismantled only after the internal supports and external diagonal braces are in place.

[0172] III. Excavation of Foundation

[0173] According to the basic design drawings, the outline of the new foundation is excavated. During the excavation process, a dedicated person stands by to observe the specific form of the foundation and the condition of the base soil, and to verify the plane position and elevation. During the excavation, care should be taken to minimize the disturbance of the original foundation and brick wall by the machinery.

[0174] IV. Construction Layout

[0175] Based on the detailed cutting drawings and the increased area of ​​foundation reinforcement, mark out the foundation cutting lines and the outer contour lines of the increased foundation. Verify the layout and proceed with subsequent construction according to this area.

[0176] V. Excavation of strip foundations

[0177] According to the foundation reinforcement design drawings, remove part of the strip foundation or rubble foundation. Use static cutting for chiseling and cutting to ensure the cutting dimensions and minimize disturbance to the original structure. When chiseling the foundation, pay attention to the development of cracks and settlement in the upper wall. If any abnormalities are found, contact the design department to take appropriate measures.

[0178] VI. Tying the reinforcing steel bars of the spreader beam

[0179] At the location of the spreader beam, an opening was made in the bottom wall of the original silo, and the steel reinforcement of the spreader beam was tied according to the design.

[0180] VII. Tying the ring foundation reinforcement

[0181] The ring reinforcement bars are pre-processed according to the ring direction and dimensions on site. The main reinforcement bars of the beam and the foundation reinforcement bars are connected by straight thread sleeves in sections. Note that the reinforcement cage of the ring beam and the spreader beam are all inside the foundation reinforcement bars.

[0182] 8. Binding anchor bolts and anchor bars for static pressure piles

[0183] According to the static pressure pile sealing details, Φ28 anchor bars are required, and they should be connected and fixed to the foundation slab reinforcement in advance according to the four corners of the pile hole position.

[0184] 9. Reinforcing bar insertion and concrete pouring for buttress columns

[0185] According to the predetermined positions, the vertical main reinforcement bars of the buttress columns are pre-connected and fixed to the foundation reinforcement bars, and stabilization measures are taken for the dowel bars. Concrete is poured first at the location of the spreader beam to ensure the compactness of the foundation concrete.

[0186] 10. Construction of Anchor Static Pressure Piles

[0187] Construction equipment:

[0188] 1. Equipment Selection: Select a static pressure pile driver of appropriate tonnage based on the type of pile to be constructed and the bearing capacity required by the design. A 100T static pressure pile driver is selected for this project.

[0189] 2. Equipment Arrival: The static pile driver will be disassembled from its original location and transported to the construction site by a transport vehicle, where it will be installed and debugged. The arrival date will be determined according to the client's requirements.

[0190] 3. Equipment commissioning: After the static pressure pile driver is installed on site, the oil circuit and wiring are commissioned.

[0191] 4. After the equipment is debugged, move it to the vicinity of the construction area to await construction.

[0192] Materials arriving on site:

[0193] 1. Material Placement: After the precast piles arrive on site, they should be placed on sleepers or other objects, not directly on the ground. Ensure they are level and maintain the integrity of the pile body. The precast piles should be placed in an area convenient for construction and transportation.

[0194] 2. Material inspection: After the precast piles are laid flat, check the integrity of the pile body, measure the length with a steel ruler, and observe the appearance of the pile.

[0195] 3. Material hoisting: When hoisting precast piles, pay attention to the hoisting points to prevent damage to the pile body during the hoisting process.

[0196] Stake location layout:

[0197] 1. Basis for setting out pile positions: Design drawings.

[0198] 2. Stake location layout: Based on the layout guidelines, a theodolite and steel tape are used to lay out the axis and stake locations using the line-of-sight measurement method to ensure the accuracy of the axis and stake locations.

[0199] 3. Pile location detection: After the pile locations are marked out, fill out the layout record and technical verification, and submit it to the client and supervisor for acceptance. After the acceptance is passed, construction can begin.

[0200] 4. Pile location re-measurement: During construction, the pile locations will be re-measured regularly, and any problems found will be dealt with and resolved in a timely manner in conjunction with relevant personnel.

[0201] Application process:

[0202] 1. Lifting of precast piles: Vertical alignment should be performed before lifting the precast piles. Measures should be taken to prevent deformation of the precast piles during lifting, transportation, and installation, and the lifting point should be located in a reasonable position.

[0203] 2. Alignment of precast piles: When hoisting and placing the piles, ensure they are aligned with the target position and lowered gently and slowly. Avoid sudden drops or forced lowering to prevent tilting, bending, or collisions. During alignment, the personnel directing the operation must communicate promptly with the operators to ensure accurate positioning. After alignment and acceptance by the client and supervisor, pile driving can begin.

[0204] 3. Control of the verticality of precast piles: During the compaction process, a dedicated person uses a theodolite or plumb line to control the verticality of the precast piles and makes adjustments as needed.

[0205] 4. During pile driving, the pile axis should always be kept under pressure, and any deviation should be corrected immediately.

[0206] 5. When splicing piles, ensure that the axes of the upper and lower pile sections are consistent.

[0207] 6. During construction, if the pressure resistance exceeds the pile driving capacity, causing the pile frame to lift or tilt, driving should be stopped immediately to investigate the cause. It is possible that the pile tip encounters a thick sand layer, increasing the resistance. In this case, the maximum driving force can be applied to the pile top, using intermittent stopping and starting to allow the pile to slowly sink and penetrate the sand layer.

[0208] 7. Relocation of static pressure pile driver: When relocating the static pressure pile driver after compaction, prevent pile deformation and promptly remeasure the pile position.

[0209] Construction process:

[0210] 1. Use 250*250mm precast C30 concrete square piles. Each standard pile section is 2 meters long, and the total length is determined according to the design.

[0211] 2. The anchor piles in this project are spliced ​​using the welding method.

[0212] 3. The anchor rods are prefabricated using Ф28 steel bars.

[0213] 4. The principle of dual control of pile length and pile driving force is adopted for pile driving, with pile driving force control as the main focus and pile length control as the secondary focus, and the pile tip reaches the bearing silty sand layer.

[0214] 5. The pile driving sequence follows the principle of starting with sparse piles and gradually increasing density, with alternating pile driving.

[0215] 11. Shear key opening

[0216] Following the shear key design details, holes were made in the original brick wall. The planar distances were based on the corresponding design drawings, with the vertical center-to-vertical distance controlled at 2 meters. Two types of holes were used: single-sided buttresses and double-sided buttresses. After the holes were made, the broken bricks and debris were removed. For damaged wall holes, bricks matching or similar to those in the original brick wall were used for repairs, preserving the original appearance of the brick wall.

[0217] 12. Binding of shear reinforcement in beams

[0218] Set up according to the design drawings, and bend the anchorage if the anchorage length of the anchorage steel bar does not meet the requirements.

[0219] 13. Binding of ring beam reinforcement and column reinforcement

[0220] According to the design drawings, the ring beam's circular reinforcing bars were prefabricated to anchor the ring beam to the original brick wall.

[0221] 14. Concrete pouring for buttress columns and beams

[0222] When pouring concrete, first pour the concrete at the bottom shear key location to avoid voids. Before pouring at the junction of the new beam / column and the original brick wall, remove the weak bonding layer and use highly fluid concrete to ensure a dense bond with the concrete at the shear key location of the brick wall.

[0223] 15. Reinforcing mesh polymer mortar wall

[0224] The construction procedure for the steel mesh-polymer mortar surface layer shall comply with the following provisions:

[0225] 1. Clean and repair the original structural components;

[0226] 2. Interface processing;

[0227] 3. Install the steel mesh;

[0228] 4. Prepare polymer mortar;

[0229] 5. Construction of polymer mortar surface layer;

[0230] 6. Maintenance;

[0231] 7. Construction quality inspection;

[0232] 8. Apply a protective coating;

[0233] 9. Work until a section is inspected and accepted.

[0234] Example 2:

[0235] The support shaft is a diagonal brace, with an angle of 60° between the diagonal brace and the horizontal ground. A horizontal support foot is welded to the bottom of the diagonal brace where it contacts the ground. Multiple anchor rods are installed at the bottom of the horizontal support foot to fix the diagonal brace to the ground, providing support to the interior of the brick-concrete complex structure. A raised layer is provided at the bottom of the horizontal support foot, with friction teeth at the contact point with the ground to increase the friction between the diagonal brace and the ground. The top of the diagonal brace is fixedly connected to the wall of the brick-concrete complex structure to provide support. Auxiliary rods are symmetrically arranged on both sides of the diagonal brace, moving away from the diagonal brace. The projection of the auxiliary rods onto the ground is symmetrical about the projection of the diagonal brace onto the ground, used to reduce the stress generated when the diagonal brace applies force to the brick-concrete complex structure, thus assisting the diagonal brace in supporting the structure. The angle between the auxiliary rods and the side of the diagonal brace is 45°.

[0236] Example 3:

[0237] The support shaft is a diagonal brace, with an angle of 45° between the diagonal brace and the horizontal ground. A horizontal support foot is welded to the bottom of the diagonal brace where it contacts the ground. Multiple anchor rods are installed at the bottom of the horizontal support foot to fix the diagonal brace to the ground, providing support to the interior of the brick-concrete complex structure. A raised layer is provided at the bottom of the horizontal support foot, with friction teeth at the contact point with the ground to increase the friction between the diagonal brace and the ground. The top of the diagonal brace is fixedly connected to the wall of the brick-concrete complex structure to provide support. Auxiliary rods are symmetrically arranged on both sides of the diagonal brace, moving away from the diagonal brace. The projection of the auxiliary rods onto the ground is symmetrical about the projection of the diagonal brace onto the ground, used to reduce the stress generated when the diagonal brace applies force to the brick-concrete complex structure, thus assisting the diagonal brace in supporting the structure. The angle between the auxiliary rods and the side of the diagonal brace is 30°.

[0238] Specifically, the principle of this invention is as follows: During use, supports are erected inside and in the middle of the complex brick-concrete structure, and the top slab and wall plaster are removed; according to the foundation design drawings, the outline of the new foundation for the complex brick-concrete structure is excavated, and the foundation cutting line and the outer outline of the new foundation are marked according to the reinforcement and expansion range of the complex brick-concrete structure; the strip foundation and rubble foundation are removed from the complex brick-concrete structure using static cutting, and the steel reinforcement of the spreader beam, the ring foundation reinforcement, and the anchor rod reinforcement of the anchor static pressure pile are tied; the pre-reserved pile holes are installed on the complex brick-concrete structure, and the buttress columns are vertically extended to the main... After the reinforcing bars are fixedly connected to the structural steel bars on the brick-concrete complex structure, concrete is poured; anchor static pressure piles are installed into the pile holes and welded for fixation; shear key openings are made on the original wall of the brick-concrete complex structure according to the design drawings, and shear beam reinforcement is tied; ring beam reinforcement is prefabricated and fixedly connected to the original wall of the brick-concrete complex structure; buttress columns and beams are fixed to the brick-concrete complex structure in sequence, and concrete is poured; reinforced concrete mortar is applied to the wall surface of the brick-concrete complex structure to complete the reinforcement construction of the brick-concrete complex structure.

Claims

1. A method for reinforcing complex brick-concrete structures, characterized in that, Includes the following steps: S10: Erect supports inside and in the middle of complex brick-concrete structures, and remove the top slab and wall plaster; S20: According to the basic design drawings, the outline of the new foundation of the complex brick-concrete structure is excavated, and the foundation cutting line and the outer outline of the new foundation are marked according to the reinforcement and expansion range of the complex brick-concrete structure. S30: On the aforementioned brick-concrete complex structure, strip foundations and rubble foundations are removed by static cutting, and the steel bars of the spreader beam, the ring foundation, and the anchor bars of the anchor static pressure pile are tied. S40: Install the pre-reserved pile holes in the design drawings on the brick-concrete complex structure, fix the vertical main reinforcement of the buttress column to the structural reinforcement on the brick-concrete complex structure, and then pour concrete. S50: Install the anchor static pressure pile into the pile hole and weld it in place; S60: According to the design drawings, shear key openings are made in the original wall of the complex brick-concrete structure, and shear beam reinforcement is tied. S70: Pre-fabricate the ring beam reinforcement in the ring beam and fix the ring beam reinforcement to the original wall of the brick-concrete complex structure. S80: The buttresses and beams are fixed to the complex brick-concrete structure in sequence, and concrete is poured. S90: Apply the reinforced mesh polymer mortar to the wall surface of the brick-concrete complex structure to complete the reinforcement construction of the brick-concrete complex structure; The specific steps for erecting supports inside and in the middle of the complex brick-concrete structure, and for removing the top slab and wall plaster, include: The first step is for construction workers to build a three-dimensional model of the complex brick-concrete structure based on its shape, structure, size, and material, and then determine the location of the support points of the complex brick-concrete structure based on the three-dimensional model. The second step is to install internal supports inside the complex brick-concrete structure to apply forces to the interior of the complex brick-concrete structure. The third step is to set a support shaft at the middle position of the brick-concrete complex structure according to the determined position of the support point. The support shaft abuts against the wall of the brick-concrete complex structure to apply a supporting force to the brick-concrete complex structure. The fourth step is to recreate the applied internal support and the support shaft in the three-dimensional model at a 1:1 scale. The construction personnel preset different force application directions and magnitudes to determine the stability of the complex brick-concrete structure. Fifth step: First remove the top plate and wall plaster near the internal support and the support axis, and then gradually remove them to both sides; The sixth step is to ensure the stability of the complex brick-concrete structure after demolition by cleaning up the demolished materials.

2. The method for reinforcing complex brick-concrete structures according to claim 1, characterized in that, The support shaft is a diagonal brace, and the angle between the diagonal brace and the horizontal ground is 45-60°. The bottom of the diagonal brace is welded with a horizontal support foot at the position where it contacts the ground. Multiple anchor rods are provided at the bottom of the horizontal support foot. The anchor rods are used to fix the diagonal brace to the ground and provide support to the interior of the brick-concrete complex structure. The bottom of the horizontal support foot is provided with a raised layer. Friction teeth are provided at the position where the raised layer contacts the ground. The friction teeth are used to increase the friction between the diagonal brace and the ground. The top of the diagonal brace is fixedly connected to the wall of the complex brick-concrete structure to provide support for the complex brick-concrete structure. The diagonal brace has auxiliary rods symmetrically arranged on both sides, moving away from the diagonal brace. The projection of the auxiliary rods onto the ground is symmetrical about the projection of the diagonal brace onto the ground. This is used to reduce the stress generated when the diagonal brace applies force to the brick-concrete complex structure, and to assist the diagonal brace in supporting the brick-concrete complex structure. The angle between the auxiliary rod and the side of the diagonal brace is 30-45°.

3. The method for reinforcing complex brick-concrete structures according to claim 2, characterized in that, The specific steps of excavating the outline of the new foundation for the complex brick-concrete structure according to the basic design drawings, and marking the foundation cutting line and the outer outline of the new foundation based on the reinforcement and expansion range of the complex brick-concrete structure include: The first step is to excavate the outline of the new foundation of the complex brick-concrete structure according to the basic design drawings, so as to reduce the disturbance to the original foundation brick wall of the complex brick-concrete structure. The second step is to mark out the foundation cutting lines based on the increased reinforcement range of the complex brick-concrete structure. The third step is to mark out the outer contour of the foundation based on the increased reinforcement range of the complex brick-concrete structure. The fourth step is to draw the basic cutting lines and the basic outer contour lines on the complex brick-concrete structure using lines of different colors.

4. The method for reinforcing complex brick-concrete structures according to claim 3, characterized in that, The specific steps for removing the strip foundation and rubble foundation on the complex brick-concrete structure using static cutting, and tying the reinforcement bars of the spreader beam, the ring foundation, and the anchor bars of the anchor static pressure piles include: The first step is to determine the cutting range and cutting depth based on the foundation cutting lines drawn on the complex brick-concrete structure. The second step is to clean the cutting area, ensuring there are no debris or obstacles, and then set the cutting parameters. The third step is to use a laser cutting machine to cut the material step by step according to the predetermined cutting parameters; Fourth, after cutting, clean the cutting area, removing any remaining gravel and concrete to ensure the ground is flat. Fifth step: Check the cutting results to ensure that the foundation has been completely removed and there are no residues. Step 6: For the location of the spreader beam, make an opening in the bottom wall of the complex brick-concrete structure, and tie the steel reinforcement of the spreader beam according to the design drawings; Step 7: The ring-shaped steel bars are pre-processed according to the ring direction and dimensions on site, and the main steel bars of the beam and the foundation reinforcing bars are connected by straight thread sleeves in sections. Step 8: According to the design drawings for sealing the static pressure piles, connect and fix the anchor bars of the static pressure piles to the reinforcement bars of the foundation slab.

5. The method for reinforcing complex brick-concrete structures according to claim 4, characterized in that, The specific steps for installing pre-drilled pile holes on the brick-concrete complex structure, fixing the vertical main reinforcement of the buttress column to the structural reinforcement of the brick-concrete complex structure, and then pouring concrete include: The first step is to install the pre-drilled pile holes from the design drawings on the complex brick-concrete structure. The second step is to connect and fix the vertical main reinforcement bars of the buttress column to the foundation reinforcement bars in advance according to the predetermined position; The third step is to weld and secure the vertical main reinforcement bars of the buttress column. The fourth step is concrete pouring. First, pour concrete at the location of the spreader beam to ensure the compactness of the foundation concrete.

6. The method for reinforcing complex brick-concrete structures according to claim 5, characterized in that, The specific steps for installing the anchor static pressure pile into the pile hole and welding it in place include: The first step is to lift the anchor static pressure pile and then perform vertical correction; The second step is to place the anchor static pressure pile into the pile hole using a tower crane; The third step involves the construction workers using a theodolite to determine the verticality of the anchor static pressure pile. The fourth step is to ensure the verticality of the pile axis of the anchor static pressure pile and then drive the pile. The fifth step is to weld and fix the anchor static pressure pile to the anchor rod reinforcement of the anchor static pressure pile after the pile structure is driven.

7. The method for reinforcing complex brick-concrete structures according to claim 6, characterized in that, The specific steps for creating shear key openings in the original brick-concrete complex structure according to the design drawings and tying the shear beam reinforcement include: The first step is to install the design drawings and make holes in the original brick-concrete complex structure of the wall, with the center-to-center distance of the holes controlled within 2m. The second step is to remove the broken bricks and debris from the opening after it is completed; for the damaged wall opening, find masonry bricks that are the same as or similar to the original brick wall to fill it in, preserving the original appearance of the brick wall. The third step is to tie the shear beam reinforcement according to the design drawings, and to bend the anchorage of the reinforcement that does not meet the anchorage length requirement. The specific steps for prefabricating the ring beam reinforcement in advance and fixing the ring beam reinforcement to the original wall of the complex brick-concrete structure include: The first step is to fabricate the ring reinforcement bars for the ring beam in advance according to the design drawings; The second step is to weld and fix the ring beam's annular reinforcing bars to the original wall of the complex brick-concrete structure.

8. The method for reinforcing complex brick-concrete structures according to claim 7, characterized in that, The specific steps for sequentially fixing the buttress columns and beams to the complex brick-concrete structure and then pouring concrete include: The first step is to fix the buttresses and beams to the complex brick-concrete structure in sequence; The second step is to remove the weak bonding layer at the connection between the buttress columns and beams; The third step is to first pour concrete at the bottom shear key location to avoid voids.

9. A method for reinforcing complex brick-concrete structures according to claim 8, characterized in that, The specific steps for applying reinforced polymer mortar to the wall surface of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure include: The first step is to set up safety support and a work platform; The second step is to clean and repair the original structural components of the complex brick-concrete structure. The third step is to install the steel mesh after surface treatment; The fourth step is to prepare polymer mortar and apply it to the wall surface of the complex brick-concrete structure. The fifth step is to cure the polymer mortar according to its characteristics; Step 6: Remove the internal supports and support shafts of the complex brick-concrete structure to complete the reinforcement construction of the complex brick-concrete structure.

Images