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SEISMIC VULNERABILITY EVALUATION OF LONGHU PAGODA, SICHUAN, PRC

机译：seismic vulnerability evaluation of long hu pagoda, Sichuan, PRC

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摘要

As an important historical relic of human being, masonry pagoda is the great significance in the eastern and western architectural cultures. These pagodas usually have large self-weight, low material strength, complex structure, which have been seriously affected by nature and man made because of their ages. Most of the existing masonry pagodas in China which have been seriously damaged urgently need detailed structural safety assessment, repair and reinforcement. In this paper, a simplified 3D model was used to evaluate the seismic vulnerability of masonry pagodas reliably. According to the previous numerical research in the field and post-earthquake surveys experience, assume for masonry a Concrete Damage Plasticity CDP material model, pushover analyses and non-linear dynamic analyses are carried out by Abaqus software. The aim is to predict the state, characteristics and distribution of damage of the structure in an accurate way. The approach is applied to Longhu pagoda (built in 1342 A.D.) which is the only yuan dynasty masonry pagoda in Sichuan province of China. Longhu pagoda is a brick pagoda with dense eaves, with a square plane and a height of about 33 meters. Affected by the Wenchuan earthquake in 2008, a north-south crack appeared from the bottom to the top of the pagoda's body. Despite the artificial repair of the cracks, the pagoda still faces the risk of structural damage. Through numerical simulation, the seismic performance of the pagoda can be evaluated, which can not only predict the hidden danger and weak link in its structure, but also provide useful reference for the reinforcement and repair of the pagoda.
机译：作为人类的重要历史遗迹，砌体宝塔是东方和西方建筑文化的重要意义。这些宝塔通常具有大的自重，材料强度，复杂的结构，这严重受到自然和男子因年龄而制造的人。中国的大多数现有的砌体塔，迫切需要严重受损，需要详细的结构安全评估，修复和加固。在本文中，使用简化的3D模型可靠地评估砌体塔的地震脆弱性。根据现场的先前数值研究和地震后调查体验，假设砌体造成混凝土损伤塑性CDP材料模型，推动分析和非线性动态分析由ABAQUS软件进行。目的是以准确的方式预测结构损坏的状态，特征和分布。该方法适用于龙湖宝塔（建于1342澳元）。龙湖宝塔是一块带密集的屋檐的砖宝塔，方形飞机和高度约33米。受2008年汶川地震影响，南北裂缝出现从宝塔的底部到顶部。尽管裂缝的人工修复，但塔仍然面临结构损伤的风险。通过数值模拟，可以评估宝塔的地震性能，这不仅可以预测其结构中隐藏的危险和弱链路，还可以为塔的加固和修复提供有用的参考。

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