西安钟楼台基防工业振动控制标准研究*
- 摘 要
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（1机械工业勘察设计研究院有限公司， 西安 710043； 2 华中科技大学土木工程与力学学院， 武汉 430074）
［摘要］随着社会经济高速发展，西安钟楼附近的工程活动和人为扰动日益频繁，钟楼结构长期安全性能受到了严峻的挑战。因此有必要建立合理科学的振动控制标准，以约束钟楼附近的工程活动和人为扰动。首先采用三维数值仿真方法分析工业振动条件下钟楼结构的力学响应，然后基于既有文献和疲劳试验结果，确定钟楼台基砌体的疲劳损伤模型和疲劳曲线，最后通过理论方法评估不同工况下西安钟楼台基的疲劳寿命，给出台基防疲劳破坏的振动控制标准。结果表明，对于西安钟楼台基，工业振动引起的地面振动速度宜控制在0.8mm/s以内。［关键词］古建筑; 钟楼结构; 工业振动; 疲劳破坏; 动力响应; 控制标准中图分类号：TU435，TU470 文献标识码：A 文章编号：1002-848X(2015)19-0026-06
Study on industrial vibration control standard for platform of Xi′an Bell TowerQian Chunyu1, Zheng Jianguo1, Zhang Wei1, Zhang Rongjun2（1 China JIKAN Research Institute of Engineering Investigations and Design Co., Ltd., Xi′an 710043, China; 2 School of Civil Engineering & Mechanics，Huazhong University of Science and Technology, Wuhan 430074, China)Abstract: With the high-speed development of society economy, there are increasingly engineering activities and man-made disturbances nearby Xi′an Bell Tower, and these engineering activities and man-made disturbances threaten the long-term safety of the bell tower structure. Hence, it is necessary to formulate the vibration control standard to restrain the nearby engineering activities and man-made disturbances. Firstly, the dynamic response of the bell tower structure under industrial vibration was investigated by using three-dimensional numerical simulation method. Then the fatigue damage accumulation model and the S-N curve for the masonry platform were determined based on the existing literature and fatigue experiments data. Finally, the fatigue life of the masonry platform was evaluated under different working conditions and the anti-fatigue failure vibration control standard was proposed. Results indicate that the peak velocity of the ground vibration induced by industrial activities for platform of Xi′an Bell Tower should be controlled under 0.8mm/s.Keywords:ancient building; bell tower structure; industrial vibration; fatigue failure; dynamic response; control standard
*国机集团科技发展基金资助项目（集团13科192号）。作者简介：钱春宇，硕士，教授级高级工程师，Email：qiancy@jk.com.cn。
