Analysis of differential weathering patterns and causes on the top of hollow enemy towers’ facades of the Great Wall – a case study of section in Haigang District, Qinhuangdao City
| Title: | Analysis of differential weathering patterns and causes on the top of hollow enemy towers’ facades of the Great Wall – a case study of section in Haigang District, Qinhuangdao City |
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| Authors: | Zhixing Chen, Zhe Li, Mingshuai Li, Xiaofeng Zhao, Yukun Zhang |
| Source: | Journal of Asian Architecture and Building Engineering, Vol 0, Iss 0, Pp 1-18 (2024) |
| Publisher Information: | Taylor & Francis Group, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Architecture LCC:Building construction |
| Subject Terms: | ji town section of the ming great wall, hollow enemy towers, upper area of facades, drainage troughs, differential weathering, Architecture, NA1-9428, Building construction, TH1-9745 |
| More Details: | The hollow enemy towers are iconic structures of the Great Wall. During a survey of the Ming Great Wall in Haigang District of Qinhuangdao, researchers observed differential weathering phenomena in the facade tops of 21 out of 51 well-preserved hollow enemy towers. Initially, high-precision 3D data of enemy towers was acquired using close-range photogrammetry from drones. The 3D surface metrology analysis software Mountains was introduced, in which the particle analysis module can use false-color images to calibrate and measure depressions on the 3D model surface, thereby enabling the identification and quantitative analysis of weathering and erosion areas on the top of the enemy towers’ facades. The study revealed that the upper regions of facades with the drainage troughs exhibited more pronounced weathering erosion compared to the areas without drainage troughs. Upon conducting an analysis of the structural integrity of the top drainage components and evaluating the slope and surface of the drainage system, it was determined that the primary water collection zones were located near the drainage troughs at both ends of enemy tower tops. Differential weathering at the top of enemy towers’ facades is primarily influenced by the varying amount of water accumulation, which serves as the decisive factor. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1347-2852 13467581 |
| Relation: | https://doaj.org/toc/1347-2852 |
| DOI: | 10.1080/13467581.2024.2431299 |
| Access URL: | https://doaj.org/article/a9ee458ee9e042ed920eca25333f4fc2 |
| Accession Number: | edsdoj.9ee458ee9e042ed920eca25333f4fc2 |
| Database: | Directory of Open Access Journals |
| ISSN: | 13472852 13467581 |
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| DOI: | 10.1080/13467581.2024.2431299 |
| Published in: | Journal of Asian Architecture and Building Engineering |
| Language: | English |