Reinforcing structure for brick-concrete structure ancient building and construction method thereof

Abstract

This invention belongs to the field of ancient building restoration technology and discloses a reinforcement structure and construction method for brick-concrete ancient buildings. The brick-concrete ancient building includes interior walls, exterior walls, floor slabs, and brick foundations. The reinforcement structure includes a raft foundation, multiple sets of concrete walls for partially or completely reinforcing the interior walls, and multiple concrete floor slabs for partially or completely replacing the floor slabs. The raft foundation is set around the foundations of the interior and exterior walls and covers the brick foundations to achieve mutual anchoring between the raft foundation and the foundations of the interior and exterior walls, as well as the brick foundations. The overall construction operation of this invention is simple, with fewer procedures and high construction efficiency. Furthermore, the reinforcement measures between each floor are interconnected and anchored to the raft foundation, resulting in good overall structural stability and significantly improved seismic resistance. It causes minimal damage to the original building and preserves the original building components to the greatest extent possible.

Description

Technical Field

[0001] This invention belongs to the field of ancient building restoration technology, and specifically relates to a reinforcement structure for ancient brick-concrete structures and its construction method. Background Technology

[0002] Ancient buildings, as cultural heritage, have important protection value. However, due to their age and the influence of natural environment and other factors, their walls are aging, their load-bearing capacity has decreased significantly, and their overall structural integrity is poor. Moreover, these buildings often have varying degrees of structural damage and safety hazards, so they need to be repaired.

[0003] The walls of ancient buildings typically consist of exterior walls built along the perimeter of the building and interior walls that divide the interior spaces. Brick foundations are usually used to transfer the building's weight to the ground. Furthermore, for multi-story ancient buildings, the floor slabs are typically built on a single layer of roof beams. Existing methods for reinforcing and restoring historical buildings mainly include partial reinforcement and overall reinforcement, with overall reinforcement enhancing the building's overall load-bearing capacity. However, for the overall reinforcement of multi-story historical buildings, current technology can only reinforce the walls and floor slabs of each floor individually. The reinforcement structures between floors are not connected, resulting in poor overall integrity and making it difficult to meet commercial seismic performance requirements. Moreover, current reinforcement construction methods struggle to improve construction efficiency and safety while preserving the original architectural style. Therefore, we propose a reinforcement structure and construction method for brick-concrete ancient buildings to address these issues. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a reinforcement structure and its construction method for ancient brick-concrete structures, which solves the problems of poor overall integrity and poor seismic performance in the reinforcement and repair of ancient buildings.

[0005] The present invention is achieved through the following scheme: a reinforcement structure for ancient brick-concrete structures, the ancient brick-concrete structures including interior walls, exterior walls, floor slabs and brick foundations, the reinforcement structure including raft foundations, multiple sets of concrete walls for partially or completely reinforcing the interior walls, and multiple concrete floor slabs for partially or completely replacing the floor slabs.

[0006] The raft foundation is set around the foundations of the inner and outer walls and covers the brick foundation to achieve mutual anchoring between the raft foundation and the foundations of the inner and outer walls and the brick foundation.

[0007] Each of the concrete floor slabs includes a load-bearing layer and a curing layer. One end of the load-bearing layer is embedded in one of the two opposing exterior walls, and the other end passes through the interior wall located between the two opposing exterior walls and is embedded in the other exterior wall. The curing layer covers the load-bearing layer and is formed on the top of the beam below the corresponding floor slab to be replaced.

[0008] Multiple sets of the concrete walls are respectively installed on the interior walls of each floor and / or on the interior walls of the exterior walls; the bottom of the concrete walls is connected and anchored to the raft foundation or the lower floor slab or the lower concrete floor slab, and the top is connected and anchored to the upper floor beams to reinforce the interior walls and / or exterior walls.

[0009] A further improvement of the present invention for the reinforcement structure of ancient brick-concrete buildings is that the load-bearing layer includes a plurality of channel steels spaced apart, the exterior wall has a plurality of slots on the interior wall surface for the plurality of channel steels to be embedded in one-to-one, and the interior wall has a plurality of through openings for the plurality of channel steels to pass through one-to-one.

[0010] The cured layer includes reinforcing bars and concrete, with the reinforcing bars positioned between the channel steel and the roof beam, and the concrete covering the reinforcing bars and channel steel to form the concrete floor slab.

[0011] A further improvement of the present invention for the reinforcement structure of ancient brick-concrete buildings is that the distance between the groove and the corresponding outer side of the outer wall is greater than 50mm.

[0012] A further improvement of the present invention for the reinforcement structure of ancient brick-concrete buildings is that the spacing between adjacent channel steels is 0.5m-1.2m.

[0013] A further improvement of the present invention for the reinforcement structure of ancient brick-concrete buildings is that a group of concrete walls located on the first floor of the ancient building includes a plurality of first walls, and the plurality of first walls are respectively set on the interior walls and / or exterior walls located on the interior walls of the first floor.

[0014] Each set of concrete walls located on the second floor and above of the ancient building includes multiple second walls, which are respectively set on the interior walls and / or exterior walls of the corresponding floors.

[0015] A further improvement of the present invention for reinforcing ancient brick-concrete structures is that each of the first walls is formed by pouring concrete, and each of the second walls is formed by plastering and wire mesh reinforcement.

[0016] A construction method for reinforcing ancient brick-concrete structures includes the following steps:

[0017] Step 1: Excavate the foundation soil around the inner walls, outer walls and brick foundation of the ancient building, and then pour concrete to form the raft foundation that is anchored to the inner walls, outer walls and brick foundation.

[0018] Step 2: Remove the original floor slab of the floor that needs to be reinforced and replace it with a concrete floor slab. The steps of replacing the concrete floor slab include: laying a load-bearing layer, with one end of the load-bearing layer embedded in one of the two opposing exterior walls, and the other end penetrating through the interior wall located between the two opposing exterior walls and embedded in the other exterior wall; constructing a curing layer on top of the beam below the original floor slab to cover the load-bearing layer, so as to form a concrete floor slab that is connected and anchored to the beam.

[0019] Step 3: Construct concrete walls on the interior walls and exterior walls located inside the building that require reinforcement. The bottom of the concrete wall on the first floor of the ancient building is anchored to the raft foundation, and the top is anchored to the upper beam. The concrete walls on the second floor and above of the ancient building are anchored to the original or replaced concrete floor slab on the lower floor, and the top is anchored to the upper beam.

[0020] A further improvement of the construction method for reinforcing ancient brick-concrete structures of the present invention is that, when laying the load-bearing layer, multiple corresponding grooves are first chiseled into the interior walls of the two opposing exterior walls, and then the interior wall between the two opposing exterior walls is chiseled through to form multiple through-holes corresponding to the multiple grooves on the exterior walls at both ends. Multiple channel steels are then provided, and one end of each channel steel is embedded into the multiple grooves on one of the two opposing exterior walls, while the other end passes through the multiple through-holes on the interior wall until it is inserted into the multiple grooves on the other exterior wall.

[0021] A further improvement of the construction method for reinforcing ancient brick-concrete structures in this invention lies in the fact that, when constructing a solidification layer that covers the load-bearing layer on top of the beams below the original floor slab,

[0022] The reinforcing bars of the curing layer are tied between the channel steel and the roof beam, and then concrete is poured to cover the reinforcing bars and channel steel, so as to form the curing layer and the concrete floor slab at the same time.

[0023] A further improvement of the construction method for reinforcing ancient brick-concrete structures of the present invention lies in the following: when constructing concrete walls on the inner wall surface and the exterior wall surface located indoors that require reinforcement: concrete is poured on the inner wall surface and the exterior wall surface located indoors on the first floor of the ancient building to form multiple first walls, and the first walls are anchored to the upper beams and the bottom raft foundation; a wire mesh is laid flat and fixed on the inner wall surface and the exterior wall surface located indoors on the second floor and above of the ancient building, and then plaster is applied to the wall surface to cover the wire mesh, forming multiple second walls, and the second walls are anchored to the upper beams and the lower floor slab or the lower concrete floor slab.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The invention features simple overall construction operation, fewer procedures, and high construction efficiency. Furthermore, the reinforcement measures between each floor are interconnected and anchored to the raft foundation, resulting in good overall structural stability, significantly improved seismic resistance, and good durability. Replacing severely weathered interior and exterior walls and floors within the building causes minimal damage to the original structure and preserves the original building components to the greatest extent possible. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of the present invention is shown.

[0027] Figure 2 A schematic diagram of the channel steel laying method of the present invention is shown.

[0028] Figure 3 A schematic diagram of the connection between the outer wall and the channel steel of the present invention is shown.

[0029] Figure 4 A schematic diagram of the connection between the inner wall and the channel steel of the present invention is shown.

[0030] Figure 5 A schematic diagram of the steel bar laying position according to the present invention is shown.

[0031] In the diagram: 1. Brick foundation; 2. Raft foundation; 3. Interior wall; 301. Opening; 4. First wall; 5. Concrete floor slab; 6. Roof beam; 7. Channel steel; 8. Exterior wall; 801. Groove; 9. Second wall; 10. Reinforcing steel. Detailed Implementation

[0032] To address the issues of poor structural integrity and seismic performance in the reinforcement and repair of ancient buildings, this invention provides a reinforcement structure and its construction method for brick-concrete ancient buildings. The following detailed description, in conjunction with accompanying drawings, further illustrates this reinforcement structure and its construction method for brick-concrete ancient buildings.

[0033] See Figures 1-5 As shown, a reinforcement structure for ancient brick-concrete structures is provided. The ancient brick-concrete structures include interior walls 3, exterior walls 8, floor slabs and brick foundations 1. The reinforcement structure is characterized by including a raft foundation 2, multiple sets of concrete walls for partially or completely reinforcing the interior walls, and multiple concrete floor slabs 5 for partially or completely replacing the floor slabs.

[0034] The raft foundation 2 is set around the foundation of the inner wall 3 and the outer wall 8, and the brick foundation 1 is wrapped around it to achieve mutual anchoring between the raft foundation 2 and the foundation of the inner wall 3, the foundation of the outer wall 8 and the brick foundation 1.

[0035] Each concrete floor slab 5 includes a load-bearing layer and a curing layer. One end of the load-bearing layer is embedded in one of the two opposing exterior walls 8, and the other end passes through the interior wall 3 located between the two opposing exterior walls 8 and is embedded in the other exterior wall 8. The curing layer covers the load-bearing layer and is formed on the top of the beam 6 below the corresponding floor slab to be replaced.

[0036] Multiple sets of concrete walls are respectively set on the interior wall 3 and / or the exterior wall 8 located on the interior wall of each floor; the bottom of the concrete wall is connected and anchored to the raft foundation 2 or the lower floor slab or the lower concrete floor slab 5, and the top is connected and anchored to the upper floor beam 6, so as to reinforce the interior wall 3 and / or the exterior wall 8.

[0037] By replacing the severely weathered and corroded interior walls 3 and exterior walls 8 with concrete walls, and replacing the severely weathered and corroded floor slabs with concrete floor slabs 5 (the walls and floor slabs with less severe weathering and corrosion are not replaced), and by connecting and anchoring the reinforcement measures between each floor to the raft foundation 2, the overall stability of the structure is improved, the seismic resistance is greatly enhanced, and the durability is good.

[0038] Among them, see Figure 2-5 As shown, the load-bearing layer includes multiple channel steels 7 spaced apart. The exterior wall 8 has multiple slots 801 on the interior wall surface for the multiple channel steels 7 to be embedded in one by one. The interior wall 3 has multiple openings 301 through which the multiple channel steels 7 pass in one by one.

[0039] The curing layer includes steel bars 10 and concrete. Steel bars 10 are placed between channel steel 7 and beam 6 (steel bars 10 can also be placed between adjacent channel steel 7 to strengthen the concrete floor slab 5). Concrete covers steel bars 10 and channel steel 7 to form concrete floor slab 5.

[0040] The distance between the groove 801 and the outer side of the corresponding outer wall 8 is greater than 50mm;

[0041] In this embodiment, the spacing between adjacent channel steels 7 is 1m, and the channel steels 7 are located at the elevation position of the concrete floor slab 5.

[0042] Multiple channel steels 7 are installed in the slots 801 on the outer wall 8 and pass through the openings 301 on the inner wall 3. The channel steels 7 serve as supporting components for the floor slab and do not need to be removed. They are poured with concrete together with the reinforcing bars 10 and embedded inside the floor slab. The poured concrete is bonded and anchored to the wall surfaces of the outer wall 8 and the inner wall 3, which not only improves the strength of the concrete floor slab 5, but also improves the strength of the outer wall 8 and the inner wall 3.

[0043] Among them, see Figure 1 As shown, a group of concrete walls located on the first floor of the ancient building includes multiple first walls 4, which are respectively set on the inner wall 3 and / or the outer wall 8 on the interior wall surface of the first floor.

[0044] Each set of concrete walls located on the second floor and above of the ancient building includes multiple second walls 9, which are respectively set on the interior walls 3 and / or the exterior walls 8 of the corresponding floors.

[0045] Each first wall 4 is formed by pouring concrete, and each second wall 9 is formed by plastering and wire mesh reinforcement.

[0046] The first wall 4 is formed by pouring concrete on the interior walls 3 and exterior walls 8 on the first floor. Before pouring, formwork is erected and a single-sided formwork method is used (this construction technology is existing and will not be described in detail here). The concrete for the wall (in this embodiment, self-compacting concrete of grade C30 or higher is used) is poured in two or more stages, and the poured concrete is bonded and anchored to the raft foundation 2 and the roof beams 6. The interior walls 3 and exterior walls 8 on each floor above the first floor of the ancient building are formed on the interior walls. The wall is then reinforced with wire mesh and plastered (using high-toughness concrete with a thickness of 50mm, a flexural strength of 12N / mm2, an equivalent bending strength of not less than 10N / mm2, an equivalent bending toughness of not less than 120kJ / m3, and a cubic compressive strength of not less than 50N / mm2). This allows the second wall 9 to be anchored to the concrete floor slab 5 and the beam 6. This not only improves the strength of the wall but also enhances the overall performance and seismic resistance through the connection and anchoring between the beam 6 and the reinforced structure.

[0047] A construction method for reinforcing ancient brick-concrete structures includes the following steps:

[0048] Step 1: Excavate the foundation soil around the inner wall 3, outer wall 8 and brick foundation 1 of the ancient building, and then pour concrete to form a raft foundation 2 that is anchored to the inner wall 3, outer wall 8 and brick foundation 1.

[0049] Step 2: Remove the original floor slab of the floor that needs to be reinforced and replace it with a concrete floor slab 5. The steps of replacing the concrete floor slab 5 include: laying a load-bearing layer, with one end of the load-bearing layer embedded in one of the two opposing exterior walls 8, and the other end penetrating through the interior wall 3 located between the two opposing exterior walls 8 and embedded in the other exterior wall 8; constructing a curing layer on the top of the beam 6 below the original floor slab to cover the load-bearing layer, so as to form a concrete floor slab 5 that is connected and anchored to the beam 6.

[0050] Step 3: Construct concrete walls on the inner wall 3 and the exterior wall 8 located inside the building, respectively. The bottom of the concrete wall on the first floor of the ancient building is connected and anchored to the raft foundation 2, and the top is connected and anchored to the upper beam 6. The concrete walls on the second floor and above of the ancient building are connected and anchored to the original floor slab or the replaced concrete floor slab 5 on the lower floor, and the top is connected and anchored to the upper beam 6.

[0051] When laying the load-bearing layer, firstly, multiple corresponding slots 801 are chiseled out on the interior walls of the two opposite exterior walls 8. Then, the interior wall 3 located between the two opposite exterior walls 8 is chiseled through to form multiple through openings 301 that correspond one-to-one with the multiple slots 801 on the two exterior walls 8. Then, multiple channel steels 7 are provided, and one end of each channel steel 7 is embedded into the multiple slots 801 on one of the two opposite exterior walls 8, and the other end passes through the multiple through openings 301 on the interior wall 3 until it is inserted into the multiple slots 801 on the other exterior wall 8.

[0052] When constructing a solidification layer to cover the load-bearing layer on top of the beam 6 below the original floor slab after its removal,

[0053] The reinforcing bars 10 of the curing layer are tied between the channel steel 7 and the roof beam 6, and then concrete is poured to cover the reinforcing bars 10 and the channel steel 7, so as to form the curing layer and the concrete floor slab 5 at the same time.

[0054] When constructing concrete walls on the inner wall 3 and the outer wall 8 located indoors, respectively: concrete is poured on the inner wall 3 and the outer wall 8 located indoors on the first floor of the ancient building to form multiple first walls 4, and the first walls 4 are anchored to the upper beam 6 and the bottom raft foundation 2; on the inner wall 3 and the outer wall 8 located indoors on the second floor and above of the ancient building, a wire mesh is laid flat and fixed, and then plaster is applied to the wall to cover the wire mesh, forming multiple second walls 9, and the second walls 9 are anchored to the upper beam 6 and the lower floor slab or the lower concrete floor slab 5.

[0055] The beneficial effects of this invention are:

[0056] The overall construction operation of this invention is simple, with few procedures and high construction efficiency; and the reinforcement measures between each floor are interconnected and anchored to the raft foundation 2, which makes the overall structure more stable, has a greater seismic resistance, and better durability; replacing the interior walls 3 and exterior walls 8 that are located indoors with more severe weathering causes less damage to the original building and preserves the original building components to the greatest extent.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A reinforcing structure for a brick-structure ancient building including an inner wall, an outer wall, a floor, and a brick foundation, the reinforcing structure being characterized by, The reinforcement structure includes a raft foundation, multiple sets of concrete walls for partially or completely reinforcing the interior walls, and multiple concrete floor slabs for partially or completely replacing the floor slabs. The raft foundation is set around the foundations of the inner and outer walls and covers the brick foundation to achieve mutual anchoring between the raft foundation and the foundations of the inner and outer walls and the brick foundation. Each of the concrete floor slabs includes a load-bearing layer and a curing layer. One end of the load-bearing layer is embedded in one of the two opposing exterior walls, and the other end passes through the interior wall located between the two opposing exterior walls and is embedded in the other exterior wall. The curing layer covers the load-bearing layer and is formed on the top of the beam below the corresponding floor slab to be replaced. Multiple sets of the concrete walls are respectively installed on the interior walls of each floor and / or on the interior walls of the exterior walls; the bottom of the concrete walls is connected and anchored to the raft foundation or the lower floor slab or the lower concrete floor slab, and the top is connected and anchored to the upper floor beams to reinforce the interior walls and / or exterior walls.

2. The reinforcement structure for ancient brick-concrete structures as described in claim 1, characterized in that, The load-bearing layer includes a plurality of channel steels spaced apart. The exterior wall has a plurality of slots on the interior wall surface for the plurality of channel steels to be embedded in one-to-one. The interior wall has a plurality of through openings for the plurality of channel steels to pass through one-to-one. The cured layer includes reinforcing bars and concrete, with the reinforcing bars positioned between the channel steel and the roof beam, and the concrete covering the reinforcing bars and channel steel to form the concrete floor slab.

3. The reinforcement structure for ancient brick-concrete structures as described in claim 2, characterized in that, The distance between the groove and the corresponding outer side of the outer wall is greater than 50mm.

4. The reinforcement structure for ancient brick-concrete structures as described in claim 2, characterized in that, The spacing between adjacent channel steels is 0.5m-1.2m.

5. The reinforcement structure for ancient brick-concrete structures as described in claim 1, characterized in that, The set of concrete walls located on the first floor of the ancient building includes a plurality of first walls, which are respectively located on the interior walls and / or exterior walls on the interior walls of the first floor. Each set of concrete walls located on the second floor and above of the ancient building includes multiple second walls, which are respectively set on the interior walls and / or exterior walls of the corresponding floors.

6. The reinforcement structure for ancient brick-concrete structures as described in claim 5, characterized in that, Each of the first walls is formed by pouring concrete, and each of the second walls is formed by plastering and wire mesh reinforcement.

7. A construction method for reinforcing ancient brick-concrete structures, characterized in that, Includes the following steps: Step 1: Excavate the foundation soil around the inner walls, outer walls and brick foundation of the ancient building, and then pour concrete to form a raft foundation that is anchored to the inner walls, outer walls and brick foundation. Step 2: Remove the original floor slab of the floor that needs to be reinforced and replace it with a concrete floor slab. The steps of replacing the concrete floor slab include: laying a load-bearing layer, with one end of the load-bearing layer embedded in one of the two opposing exterior walls, and the other end penetrating through the interior wall located between the two opposing exterior walls and embedded in the other exterior wall; constructing a curing layer on top of the beam below the original floor slab to cover the load-bearing layer, so as to form a concrete floor slab that is connected and anchored to the beam. Step 3: Construct concrete walls on the interior walls and exterior walls located inside the building that require reinforcement. The bottom of the concrete wall on the first floor of the ancient building is anchored to the raft foundation, and the top is anchored to the upper beam. The concrete walls on the second floor and above of the ancient building are anchored to the original or replaced concrete floor slabs on the lower floor, and the top is anchored to the upper beam.

8. The construction method for reinforcing the structure of ancient brick-concrete buildings as described in claim 7, characterized in that, When laying the load-bearing layer, firstly, a number of corresponding grooves are chiseled out on the interior walls of the two opposite exterior walls. Then, the interior wall between the two opposite exterior walls is chiseled through to form a number of through openings that correspond one-to-one with the grooves on the exterior walls at both ends. Then, a number of channel steels are provided, and one end of each channel steel is embedded into a number of grooves on one of the two opposite exterior walls, while the other end passes through a number of through openings on the interior wall until it is inserted into a number of grooves on the other exterior wall.

9. The construction method for reinforcing structures of ancient brick-concrete buildings as described in claim 8, characterized in that, When constructing a curing layer to cover the load-bearing layer on top of the beam below the original floor slab, the reinforcing bars of the curing layer are tied between the channel steel and the beam, and then concrete is poured to cover the reinforcing bars and channel steel, so as to form the curing layer and the concrete floor slab at the same time.

10. The construction method for reinforcing structures of ancient brick-concrete buildings as described in claim 7, characterized in that, When constructing concrete walls on the interior walls and exterior walls located indoors that require reinforcement: pour concrete on the interior walls and exterior walls located indoors on the first floor of the ancient building to form multiple first walls, and anchor the first walls to the upper beams and the bottom raft foundation; lay and fix wire mesh on the interior walls and exterior walls located indoors on the second floor and above of the ancient building, and then cover the wire mesh with plaster to form multiple second walls, and anchor the second walls to the upper beams and the lower floor slab or the lower concrete floor slab.

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