A method for reinforcing Shikumen historical buildings

Abstract

The present invention relates to a method for reinforcing a Shikumen historical building, comprising the following steps: Step 1: The Shikumen includes a Shikumen door frame and a brick wall surrounding the Shikumen, the brick wall surface on one side of the Shikumen door is cleaned, and the plaster layer on the brick wall surface is removed; Step 2: A high-ductility concrete surface layer is applied to the cleaned brick wall surface, and thermal insulation and moisture-retaining maintenance is performed within 12 hours after the high-ductility concrete surface layer is completed and after final setting; Step 3: The Shikumen frame is reinforced, wherein the Shikumen frame includes an internal frame and an external frame; the internal frame is supported inside the Shikumen door frame, and the external frame is covered outside the Shikumen. By reinforcing the Shikumen through the method of the present invention, the Shikumen door frame can be connected to the brick wall and then disassembled and protected after being cut as a whole, thereby reducing the risk of fracture and damage of the brick wall and the Shikumen door frame, and ensuring the integrity of the Shikumen.

Description

Technical Field

[0001] The present invention relates to the field of historical building protection, and in particular to a Shikumen historical building reinforcement method. Background Art

[0002] Shikumen buildings generally use stone for door frames and solid wood for door panels. The outer side of the door frame is generally a brick wall. With the development of urbanization and projects such as the renovation of old houses, some buildings with Shikumen need to be demolished. Considering the historical and cultural value of Shikumen, Shikumen needs to be demolished and preserved.

[0003] However, there are the following technical problems with demolition and retention:

[0004] 1. Buildings with Shikumen doors are relatively old, and their walls and stones have aged to a certain extent, making complete dismantling relatively difficult;

[0005] 2. Some brick wall structures are built in a one-by-one masonry method. When the brick wall connected to the Shikumen door frame is dismantled as a whole, the wall is easy to fall off and break under stress. In addition, the height of some Shikumen doors can reach 5.5m, making it difficult to dismantle. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a Shikumen historical building reinforcement method, through which the Shikumen is reinforced, which facilitates the overall disassembly and preservation of the Shikumen historical building.

[0007] The technical objectives of the present invention are achieved through the following technical solutions:

[0008] A method for reinforcing a Shikumen historical building, comprising the following steps:

[0009] Step 1: Shikumen includes the Shikumen door frame and the brick wall around the Shikumen. Clean the brick wall surface on the inner side of the Shikumen door and chisel off the paint layer on the brick wall surface;

[0010] Step 2: Apply a high-ductility concrete surface layer on the cleaned brick wall surface, and perform thermal insulation and moisture maintenance within 12 hours after the high-ductility concrete surface layer is completed and after final setting;

[0011] Step 3: Reinforce the Shikumen frame. The Shikumen frame includes an inner frame and an outer frame. The inner frame is supported inside the door frame of the Shikumen, and the outer frame is covered on the outside of the Shikumen.

[0012] Furthermore, before applying high-ductility concrete, confirm that the brick wall surface is moist and free of visible water. Use a trowel to initially apply high-ductility concrete to the brick wall surface, then scrape it flat after the initial application, and finally apply a layer of high-ductility concrete. After the construction is completed, perform leveling and finishing.

[0013] Furthermore, the external frame includes a bottom bracket, a column, and a guardrail, and the bracket includes a first profile and a second profile; and the installation of the external frame includes the following steps:

[0014] S1. Dig a number of holes at the bottom of the Shikumen, with the holes passing horizontally through both sides of the Shikumen, and insert the first profile into the holes respectively;

[0015] S2. Install an L-shaped folding plate between the first profile and the Shikumen door. The L-shaped folding plates are symmetrically installed on both sides of the Shikumen door, with one side of the L-shaped folding plate inserted between the first profile and the bottom of the Shikumen door, and the other side of the L-shaped folding plate abutting the bottom edge of the Shikumen door; connect and fix the L-shaped folding plate to the first profile;

[0016] S3, hollowing out the area between the first profiles below the Shikumen, inserting a second profile between the first profiles, and connecting and fixing the second profile to the first profile;

[0017] S4. Install guardrails on the front and rear sides of the Shikumen, and connect the guardrails on both sides of the Shikumen with tension bolts;

[0018] S5. Install a longitudinal column on the bottom bracket, with the lower end of the longitudinal column vertically fixed on the first profile, and install a connecting support between the longitudinal column and the guardrail.

[0019] Furthermore, a rubber mat is laid between the guardrail and the Shikumen to isolate the guardrail and the Shikumen.

[0020] Furthermore, on both sides of the Shikumen, a transverse connecting profile is connected between two adjacent columns, and both ends of the transverse connecting profile are respectively connected and fixed to the columns.

[0021] Furthermore, a diagonal brace is installed on one side of the Shikumen, and the diagonal brace is installed between the end of the first steel section and the column.

[0022] Compared with the prior art, the beneficial effect of the present invention is that by reinforcing the Shikumen through the method of the present invention, the door frame of the Shikumen can be connected to the brick wall and then disassembled and protected after being cut as a whole, thereby reducing the risk of fracture and damage of the brick wall and the Shikumen door frame and ensuring the integrity of the Shikumen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the Shikumen frame front view among the present invention.

[0024] Figure 2 It is a side view of the Shikumen frame among the present invention.

[0025] In the figure, 1. First profile; 2. Second profile; 3. Column; 4. Door frame; 5. Brick wall; 6. Tension bolts; 7. Connecting pillars; 8. Horizontal connecting profile; 9. First parapet; 10. Second parapet; 11. L-shaped folded plate; 12. Diagonal brace; 13. Internal frame. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0027] A method for reinforcing a Shikumen historical building, comprising the following steps:

[0028] Step 1: The Shikumen includes a door frame 4 and a brick wall 5 around the Shikumen. The surface of the brick wall 5 on the inner side of the Shikumen door is cleaned and the whitewash layer on the brick wall surface is removed;

[0029] Step 2: Apply a high-ductility concrete surface layer to the cleaned brick wall surface. Perform thermal insulation and moisture maintenance within 12 hours after the completion of the high-ductility concrete surface layer and after final setting. The maintenance time after construction is completed shall be no less than 7 days. Before applying the high-ductility concrete, confirm that the brick wall surface is moist and free of visible water. Use a trowel to initially apply the high-ductility concrete to the brick wall surface. After the initial application, scrape and level the surface. Finally, apply a layer of high-ductility concrete. After the construction is completed, perform leveling and finishing.

[0030] Specifically, before formal screeding, use a line to level the wall, hang a plumb line from top to bottom, pull the line to test, and then make appropriate ash cakes based on the inspection results. The ash cakes are made of high-ductility concrete. As a measure to control thickness, the thickness of the thinnest part must not be less than the designed thickness, and the ash cakes should be made in the brick pit.

[0031] Step 3: Reinforce the Shikumen frame. The Shikumen frame includes an inner frame 13 and an outer frame. The inner frame 13 is supported inside the Shikumen door frame 4, and the outer frame is covered on the outside of the Shikumen. Specifically, the outer frame includes a bottom bracket, a column 3, and a balustrade. The bracket includes a first profile 1 and a second profile 2. Installing the outer frame includes the following steps:

[0032] S1. Dig a number of holes at the bottom of the Shikumen, with the holes passing horizontally through both sides of the Shikumen, and insert the first profile 1 into the holes respectively;

[0033] S2. Install an L-shaped folding plate 11 between the first profile 1 and the Shikumen door. The L-shaped folding plates 11 are symmetrically installed on both sides of the Shikumen door. One side of the L-shaped folding plate 11 is inserted between the first profile 1 and the bottom of the Shikumen door, and the other side of the L-shaped folding plate 11 is attached to the bottom edge of the Shikumen door. Connect and fix the L-shaped folding plate 11 to the first profile 1.

[0034] S3, hollowing out the area between the first profiles 1 below the Shikumen, inserting the second profile 2 between the first profiles 1, and connecting and fixing the second profile 2 to the first profile;

[0035] S4. Install guardrails on the front and rear sides of the Shikumen, and connect the guardrails on both sides of the Shikumen through tension bolts 6; preferably, a rubber pad is laid between the guardrail and the Shikumen, and the rubber pad isolates the guardrail and the Shikumen to prevent the guardrail from damaging the Shikumen and increase the fit between the guardrail and the Shikumen; the guardrail is specifically divided into a first guardrail 9 and a second guardrail 10, and the length of the first guardrail 9 is greater than that of the second guardrail 10. The first guardrail 9 and the second guardrail 10 are selected according to the length spanned by the installation position.

[0036] S5. Install the longitudinal column 3 on the bottom bracket. The lower end of the column 3 is vertically fixed on the first profile 1. Connecting pillars 7 are installed between the column 3 and the guardrail. Figure 1 and Figure 2 As shown. Preferably, a transverse connecting profile 8 is connected between two adjacent columns 3 on both sides of the Shikumen, and the two ends of the transverse connecting profile 8 are respectively connected and fixed to the columns. In order to increase the stability of the Shikumen, a diagonal brace 12 is also installed on one side of the Shikumen. The diagonal brace 12 is installed between the end of the first profile 1 and the column 3. The other side of the Shikumen may or may not be installed with a diagonal brace. In this embodiment, the first profile, the second profile, the column, the diagonal brace, and the transverse connecting profile are all made of I-beams, the connecting pillars are made of angle steel, and the guardrails are made of channel steel. The profile specifications need to meet the load requirements, and the profiles are connected and fixed by welding. After the fixing is completed, the subsequent cutting and hoisting operations can be carried out.

[0037] This embodiment is only a further explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A method for reinforcing Shikumen historical buildings, characterized in that: The method comprises the following steps: Step 1: Shikumen includes the Shikumen door frame and the brick wall around the Shikumen. Clean the brick wall surface on the inner side of the Shikumen door and chisel off the paint layer on the brick wall surface; Step 2: Apply a high-ductility concrete surface layer on the cleaned brick wall surface, and perform thermal insulation and moisture maintenance within 12 hours after the high-ductility concrete surface layer is completed and after final setting; Step 3: Reinforce the Shikumen frame, wherein the Shikumen frame includes an inner frame and an outer frame; the inner frame is supported inside the door frame of the Shikumen, and the outer frame is covered on the outside of the Shikumen; the outer frame includes a bottom bracket, columns, and balustrades, and the bottom bracket includes a first profile and a second profile; installing the outer frame includes the following steps: S1. Dig a number of holes at the bottom of the Shikumen, with the holes passing horizontally through both sides of the Shikumen, and insert the first profile into the holes respectively; S2. Install an L-shaped folding plate between the first profile and the Shikumen door. The L-shaped folding plates are symmetrically installed on both sides of the Shikumen door, with one side of the L-shaped folding plate inserted between the first profile and the bottom of the Shikumen door, and the other side of the L-shaped folding plate abutting the bottom edge of the Shikumen door; connect and fix the L-shaped folding plate to the first profile; S3, hollowing out the area between the first profiles below the Shikumen, inserting a second profile between the first profiles, and connecting and fixing the second profile to the first profile; S4. Install guardrails on the front and rear sides of the Shikumen, and connect the guardrails on both sides of the Shikumen with tension bolts; S5. Install a longitudinal column on the bottom bracket, with the lower end of the longitudinal column vertically fixed on the first profile, and install a connecting support between the longitudinal column and the guardrail.

2. The method for reinforcing a Shikumen historical building according to claim 1, characterized in that: Before applying high-ductility concrete, make sure the brick wall surface is moist and free of visible water. Use a trowel to initially apply high-ductility concrete to the brick wall surface, then scrape it flat after the initial application, and finally apply a layer of high-ductility concrete. After the construction is completed, perform leveling and finishing.

3. The method for reinforcing a Shikumen historical building according to claim 1, characterized in that: A rubber mat is also laid between the guardrail and the Shikumen to isolate the guardrail and the Shikumen.

4. The method for reinforcing a Shikumen historical building according to claim 1, characterized in that: On both sides of the Shikumen, a transverse connecting profile is connected between two adjacent columns, and both ends of the transverse connecting profile are respectively connected and fixed to the columns.

5. The method for reinforcing a Shikumen historical building according to claim 1, characterized in that: A diagonal brace is also installed on one side of the Shikumen, and the diagonal brace is installed between the end of the first profile and the column.

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