Construction method for rebuilding building based on historic site foundation

Abstract

The invention relates to the technical field of building construction, and discloses a construction method for rebuilding a building based on an ancient site foundation, which comprises the following steps: removing an original structure and treating a foundation: manually removing the original structure to the foundation, tamping by layers by adopting pseudo-ginseng lime soil, pouring a reinforced concrete raft foundation, and accurately positioning a column position through a total station; stone processing and treatment: selecting local bluestone, forming a natural split surface by combining electric hammer punching with a stone splitter, controlling the size error to be less than or equal to 2mm, and performing burning treatment to eliminate mechanical traces; stone columns are built and structurally reinforced, stone is typeset on the basis of positioning data of a total station, M10 cement mortar is adopted during building, reinforced concrete core columns are reserved, tie bars are welded, and the perpendicularity is monitored in the whole process; yellow mud alum slurry is sprayed on the surface of the stone, the stone is naturally dried in the shade to form an antique color, and a gradient is reserved at the top of a column to prevent water accumulation. According to the method, multiple problems in ancient site foundation reconstruction are solved, and comprehensive improvement of ancient site protection, construction quality and efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a building construction method based on the reconstruction of a historic monument foundation. Background Art

[0002] With growing awareness of cultural heritage protection, the restoration and reconstruction of historic monuments has become a crucial topic in the architectural field. Traditional construction methods often face numerous challenges when renovating historic monuments, including how to effectively preserve the monument's historical features, ensure the harmony between new construction and the existing structure, and employ modern technologies to improve construction quality and efficiency.

[0003] In existing technologies, the reconstruction of historical monuments typically involves simple demolition and reconstruction or partial repairs. These methods not only fail to achieve the desired results but may also cause irreversible damage to the monuments. For example, during the demolition of the original structure and foundation treatment, there is a lack of precise positioning and compaction techniques, resulting in a loose connection between the new construction and the original structure. In terms of stone processing and treatment, traditional methods make it difficult to achieve a natural split surface and precise dimensional control, affecting aesthetics and stability. In rammed earth preparation and wall construction, the proportion of soil solidifiers used and the construction process are imperfect, resulting in insufficient wall strength and durability. In stone column masonry and structural reinforcement, there is a lack of effective tie bar arrangement and verticality monitoring methods, affecting structural safety. In terms of surface aging and waterproofing, existing technologies make it difficult to achieve an antique color and long-term waterproofing effects.

[0004] In response to the above problems, the present invention provides a construction method based on the reconstruction of the historical monument foundation. By optimizing the construction steps and processes, it realizes the organic combination of historical monument protection and reconstruction, which not only preserves the historical features of the historical monument, but also improves the quality and efficiency of the newly constructed part. Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a construction method for rebuilding a building based on a historical monument foundation to solve the problems pointed out in the above background technology.

[0006] In order to achieve the above-mentioned purpose of the invention, the technical solutions adopted are as follows:

[0007] The construction method for rebuilding a building based on a historical site includes the following steps:

[0008] (1) Demolition of the original structure and foundation treatment: The original observation column was manually dismantled to the foundation. The base surface was compacted layer by layer using 37 lime soil. A 600mm thick reinforced concrete raft foundation was cast. 300×300 core column steel bars were pre-embedded. The anchoring depth met the design requirements. The column position was located using a total station. The column cross-section shape and control line were calibrated using a chalk line.

[0009] (2) Stone processing and treatment: Select local bluestone, use electric hammer to drill holes and split with stone splitter to form natural split surface, use table saw to cut the stone to thickness ≥15cm, height 25-35cm, length

[0010] ≥30cm, after removing unqualified products, the size error is controlled by manual precision cutting combined with multi-layer board mold

[0011] ≤2mm, and the machine-cut stone is subjected to fire treatment to eliminate mechanical traces;

[0012] (3) Stone column masonry and structural reinforcement: The stone materials were arranged based on the total station positioning data. M10 cement mortar was used for masonry, with 3 / 4 mortar laid on the contact surface. The outer joints were ≤3mm, and the staggered joints between the upper and lower stones were ≥10cm. A 300×300 reinforced concrete core column was reserved. Tie bars were welded every 500mm. The tie bars were hidden in the stone grooves. The verticality was monitored by the total station throughout the process.

[0013] (4) Surface aging and waterproofing: After the fire treatment, the stone surface is sprayed with yellow mud and alum slurry, where the yellow mud and alum are 100:5, and dried naturally in the shade to form an antique color. The top of the column is built with a whole piece of stone and a slope is reserved on all sides.

[0014] As a further improvement of the present invention, in step (2), the stone surface treatment further includes manually tapping and chamfering the machined surface at the corner to form natural edges and corners.

[0015] As a further improvement of the present invention, in step (3), the tie bars are arranged radially and are welded to the vertical steel bars of the core column.

[0016] As a further improvement of the present invention, in step (4), the yellow mud and alum slurry needs to be naturally dried in the shade for more than 48 hours after spraying.

[0017] As a further improvement of the present invention, in step (1), the compacted density of the Panax notoginseng ash soil is not less than 95%.

[0018] As a further improvement of the present invention, in step (2), the stones cut by the table saw need to be manually screened to remove unqualified stones with surface depressions or protrusions exceeding 3 mm.

[0019] As a further improvement of the present invention, in step (3), the mortar joint thickness of the M10 cement mortar is controlled within the range of 1-2 mm.

[0020] As a further improvement of the present invention, in step (4), the slope around the top of the column is designed to be 2%-3% to prevent water accumulation.

[0021] As a further improvement of the present invention, in step (3), the calibration frequency of the total station is to perform a verticality test once every 1m of masonry height.

[0022] The beneficial effects of the present invention are: the present invention not only solves many technical difficulties in the reconstruction of the foundation of historical sites, but also achieves a comprehensive improvement in historical site protection, construction quality, efficiency and environmental friendliness, and has broad application prospects and significant social and economic benefits.

[0023] This method utilizes naturally split stone masonry, combined with precision manual cutting and mold control, to ensure that the stone dimensions perfectly match the pillar shape, maximally recreating the natural, irregular forms of ancient stone pillars. Through precise layout and masonry techniques, the gaps between the stones are controlled to 1-3 mm, achieving a "dry-laid" effect that is indistinguishable from the ancient stone pillars in appearance. Mechanically cut surfaces are flamed to remove any traces of human intervention, and a yellow mud and alum slurry is applied to give the stone surface a naturally weathered appearance.

[0024] This invention provides a solid foundation for each stone column, ensuring the stability of the overall structure. A reinforced concrete core is reserved within each stone column and connected to the foundation, further enhancing the column's earthquake and wind resistance. Slots are cut into the stone to create anchors, connecting the stone to the core column to form a monolithic structure and enhance the column's stability. A total station monitors and controls verticality throughout the entire masonry process, ensuring that the column's verticality meets requirements. Molds are used to check irregular corners to ensure the accuracy of the stone's size and shape.

[0025] The present invention uses local bluestone as masonry material, which reduces material transportation costs and reflects regional characteristics. It also utilizes the natural split surface of the stone, reduces the amount of stone processing, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 Layout diagram of the positioning data of the observation column;

[0028] Figure 2 This is a photo of the observation column after it was rebuilt. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0031] The construction method for rebuilding a building based on a historical site includes the following steps:

[0032] (1) Demolition of the original structure and foundation treatment: The original observation column was manually dismantled to the foundation. The base surface was compacted layer by layer using 37 lime soil. A 600mm thick reinforced concrete raft foundation was cast. 300×300 core column steel bars were pre-embedded. The anchoring depth met the design requirements. The column position was located using a total station. The column cross-section shape and control line were calibrated using a chalk line.

[0033] (2) Stone processing and treatment: Select local bluestone, use electric hammer to drill holes and split with stone splitter to form natural split surface, use table saw to cut the stone to thickness ≥15cm, height 25-35cm, length

[0034] ≥30cm, after removing unqualified products, the size error is controlled by manual precision cutting combined with multi-layer board mold

[0035] ≤2mm, and the machine-cut stone is subjected to fire treatment to eliminate mechanical traces;

[0036] (3) Stone column masonry and structural reinforcement: Stone materials are arranged based on the total station positioning data. The positioning data of the observation column is arranged as shown in the figure. Figure 1 As shown, M10 cement mortar is used during masonry, with 3 / 4 mortar laid on the contact surface. The outer joint is ≤3mm, and the upper and lower stone staggered joints are ≥10cm. A 300×300 reinforced concrete core column is reserved, and tie bars are welded every 500mm. The stone is grooved to hide the tie bars, and the verticality is monitored by a total station throughout the process.

[0037] (4) Surface aging and waterproofing: After the fire treatment, the stone surface is sprayed with yellow mud and alum slurry, where yellow mud and alum = 100:5, and naturally dried in the shade to form an antique color. The top of the column is built with a whole piece of stone and a slope is reserved around it. The photos of the observation column after reconstruction are as follows Figure 2 shown.

[0038] In step (2), the stone surface treatment further includes manually tapping and chamfering the machined surface at the corner to form natural edges and corners.

[0039] In step (3), the tie bars are arranged radially and are welded to the vertical steel bars of the core column.

[0040] In step (4), the yellow mud and alum slurry needs to be naturally dried in the shade for more than 48 hours after spraying.

[0041] In step (1), the compacted density of the Panax notoginseng ash soil is not less than 95%.

[0042] In step (2), the stones cut by the table saw need to be manually screened to remove unqualified stones with surface depressions or protrusions exceeding 3 mm.

[0043] In step (3), the thickness of the mortar joints of the M10 cement mortar is controlled within the range of 1-2 mm.

[0044] In step (4), the slope around the top of the column is designed to be 2%-3% to prevent water accumulation.

[0045] In step (3), the calibration frequency of the total station is to perform a verticality test every 1m of masonry height.

[0046] By optimizing the construction process, the present invention achieves the preservation of the historical features of the monument while ensuring high-quality construction of the newly constructed portion. This solves the problems of loose connections, imprecise dimensional control, insufficient wall strength, and poor structural safety that exist in traditional methods. The present invention employs techniques such as natural split-face masonry, precise layout, fire treatment, and yellow mud and alum slurry aging to maximize the restoration of the monument's natural form. At the same time, reinforced concrete core columns and tie bars enhance structural stability, ensuring construction quality and efficiency. The present invention has broad application prospects and is suitable for various monument restoration and reconstruction projects, achieving both socioeconomic benefits and environmental protection value.

[0047] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, improvements, component splits, or combinations, etc., that fall within the spirit and principles of the present invention, shall be included within the scope of protection of the present invention.

Claims

1. A construction method for rebuilding a building based on a historical site, characterized in that: The following steps are involved: (1) Demolition of the original structure and foundation treatment: The original observation column was manually dismantled to the foundation. The base surface was compacted layer by layer using 37 lime soil. A 600mm thick reinforced concrete raft foundation was cast. 300×300 core column steel bars were pre-embedded. The anchoring depth met the design requirements. The column position was located using a total station. The column cross-section shape and control line were calibrated using a chalk line. (2) Stone processing and treatment: Select local bluestone, use electric hammer to drill holes and split with stone splitter to form natural split surface, use table saw to cut the stone to thickness ≥15cm, height 25-35cm, length ≥30cm, after removing unqualified products, the size error is controlled by manual precision cutting combined with multi-layer board mold ≤2mm, and the machine-cut stone is subjected to fire treatment to eliminate mechanical traces; (3) Stone column masonry and structural reinforcement: The stone materials were arranged based on the total station positioning data. M10 cement mortar was used for masonry, with 3 / 4 mortar laid on the contact surface. The outer joints were ≤3mm, and the staggered joints between the upper and lower stones were ≥10cm. A 300×300 reinforced concrete core column was reserved. Tie bars were welded every 500mm. The tie bars were hidden in the stone grooves. The verticality was monitored by the total station throughout the process. (4) Surface aging and waterproofing: After the fire treatment, the stone surface is sprayed with yellow mud and alum slurry, where the yellow mud and alum are 100:5, and dried naturally in the shade to form an antique color. The top of the column is built with a whole piece of stone and a slope is reserved on all sides.

2. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (2), the stone surface treatment further includes manually tapping and chamfering the machined surface at the corner to form natural edges and corners.

3. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (3), the tie bars are arranged radially and are welded to the vertical steel bars of the core column.

4. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (4), the yellow mud and alum slurry needs to be naturally dried in the shade for more than 48 hours after spraying.

5. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (1), the compacted density of the Panax notoginseng ash soil is not less than 95%.

6. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (2), the stones cut by the table saw need to be manually screened to remove unqualified stones with surface depressions or protrusions exceeding 3 mm.

7. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (3), the thickness of the mortar joints of the M10 cement mortar is controlled within the range of 1-2 mm.

8. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (4), the slope around the top of the column is designed to be 2%-3% to prevent water accumulation.

9. The construction method for rebuilding a building based on a historic site according to claim 1, characterized in that: In step (3), the calibration frequency of the total station is to perform a verticality test every 1m of masonry height.

Images