Construction Technologies and Conservation Strategies for the Bell Tower of Former Nanking University (Nanjing, China)—A Case Study of a Typical Architectural Heritage of the American Church School in the Late 19th Century
Abstract
:1. Introduction
1.1. Literature Review
1.2. Aims and Methodology
2. Case Presentation
2.1. History of the Building
2.1.1. The Historical Background of the Bell Tower
2.1.2. The History of the Bell Tower
2.2. Location and Current Function of the Building
2.3. General Architectural Form
3. Present—Existing State of the Building
3.1. Artistic Characteristics
3.2. Constructional Characteristics
3.2.1. Structural System
3.2.2. Roof Truss System
3.3. Materials and Technology Characteristics
3.4. Equipment and Facilities
3.5. Damage to the Building and Assessment of the Technical Condition
4. Future—Campus Renewal and Utilization Analysis
4.1. Building Function Update
4.2. Repair Target and Principles
- Authenticity principle
- 2.
- Integrity principle
- 3.
4.3. Damage Cause Analysis and Repair Technology
4.3.1. Completely Preserve the Appearance of the Building
4.3.2. Structural System Strengthening
- Wall strengthening.
- 2.
- Wood joists and wooden stair strengthening.
- 3.
- Wood roof truss strengthening.
- (1)
- The rotten parts of the wood roof truss were replaced. Some wood roof trusses had rotted ends (Figure 22a). We sawed off the rotten parts and used the original wood to redo this place. First, we used water-resistant glue on the joint surface of the old and new materials. Then we used two pieces of anti-corrosion wood to clamp the old and new wooden components; we then used water-resistant glue to fasten and screw the bolts. Finally, we used CFRP to strengthen the wooden components and wrap the old and new materials tightly.
- (2)
- For cracked roof trusses, CFRP was used to enhance durability in a circular direction. The thickness of CFRP was 0.167 mm, the paving width was 100 mm, and the interval was 400 mm (Figure 22b).
- (3)
- CFRP paste strengthened the joints of the beams, purlins, and columns to enhance the integrity of the wood roof truss (Figure 22c).
- 4.
- Tower strengthening.
4.3.3. Update and add Construction Equipment
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Spatial Type | Analysis for Function Type | Spatial Diagram | Space Design |
---|---|---|---|
Main Space 1F Area: 167.2 m2 Height: 3.9 m | Exhibition Hall The development history of Christianity in China. The construction course of Nanjing Missionary School. | ||
Main Space 2F Area: 167.2 m2 Height: 3.3 m | Architectural Club Chinese and Western culture Exchange Club. Historic Building Heritage Preservation Club. | ||
Attic Space 3F Area: 169.9 m2 Height: 1 m−3.8 m | Office President Office. Bright and open modern office space. | ||
Corridor Space 1F and 2F Area: 39.4 m2 Height: 3.9 m (1F) 3.3 m (2F) | Gallery Dissemination and communication of the development process of Nanjing Missionary School. | ||
Outdoor Space Open ground | Temporary Exhibition Through landscape, plants, sculpture and light, the history and development of the mission school are presented. |
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Wang, H.; Hu, Z.; Huang, Y.; Chen, M.; Hu, L.; Zhou, Q. Construction Technologies and Conservation Strategies for the Bell Tower of Former Nanking University (Nanjing, China)—A Case Study of a Typical Architectural Heritage of the American Church School in the Late 19th Century. Buildings 2022, 12, 2251. https://doi.org/10.3390/buildings12122251
Wang H, Hu Z, Huang Y, Chen M, Hu L, Zhou Q. Construction Technologies and Conservation Strategies for the Bell Tower of Former Nanking University (Nanjing, China)—A Case Study of a Typical Architectural Heritage of the American Church School in the Late 19th Century. Buildings. 2022; 12(12):2251. https://doi.org/10.3390/buildings12122251
Chicago/Turabian StyleWang, Hechi, Zhanfang Hu, Yanyan Huang, Meng Chen, Linhua Hu, and Qi Zhou. 2022. "Construction Technologies and Conservation Strategies for the Bell Tower of Former Nanking University (Nanjing, China)—A Case Study of a Typical Architectural Heritage of the American Church School in the Late 19th Century" Buildings 12, no. 12: 2251. https://doi.org/10.3390/buildings12122251