| 深基坑工程安全评价的尖点突变模型 |
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| 引用本文： | 沈细中,冷元宝,兰雁,张俊霞. 深基坑工程安全评价的尖点突变模型[J]. 哈尔滨工业大学学报, 2009, 41(4): 229-231 |
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| 作者姓名： | 沈细中 冷元宝 兰雁 张俊霞 |
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| 作者单位： | 黄河水利委员会,黄河水利科学研究院,郑州,450003;水利部堤防安全与病害防治工程技术研究中心,郑州,450003;中国科学院,武汉岩土力学研究所,武汉,430072;黄河水利委员会,黄河水利科学研究院,郑州,450003 |
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| 基金项目： | 水利部公益性行业科研专项经费资助项目，国家科技部科研院所社会公益研究专项基金，水利部引进国际先进农业科学技术计划(948计划) |
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| 摘 要： | 为评价深基坑工程失稳的突变特征,采用突变理论建立了深基坑工程尖点突变安全评价模型.根据工程安全监控理论,引入突变理论,以基坑水平变形为例,考虑深基坑土体的流变特性,建立了基于时效影响因子的深基坑工程尖点突变安全评价模型.实例分析表明,尖点突变安全评价模型克服了采用常规设置监控值评价时参数选择困难,并能反映基坑失稳突变性的特点,可以量化评价基坑安全程度,正确评价安全状态,具有适应性强、精度高的优点.
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| 关 键 词： | 深基坑 安全评价 尖点突变模型 |
A safety evaluation model of deep excavation project based on cusp catastrophe theory |
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| SHEN Xi-zhong,LENG Yuan-bao,LAN Yan,ZHANG Jun-xia. A safety evaluation model of deep excavation project based on cusp catastrophe theory[J]. Journal of Harbin Institute of Technology, 2009, 41(4): 229-231 |
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| Authors: | SHEN Xi-zhong LENG Yuan-bao LAN Yan ZHANG Jun-xia |
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| Affiliation: | 1(1. Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou, 450003, China, 2. Research Center on Levee Safety and Disaster Prevention Ministry of Water Resources, 450003, China;3. Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan,430071 , China) |
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| Abstract: | ; In order to evaluate the jumping destruction character of deep excavation, taking the level distortion of pit as example, a safety evaluation model of deep excavation was established based on safety supervision theory and cusp catastrophe theory with the consideration of creep character of soil based on time-effect factor of pit. Analysis of an example shows that the established model can overcome the difficulty in setting the supervising value, and can reflect the outburst destroy character of pit. Moreover, the model can exactly evaluate the safety degree in quantity and the character of safety, with the advantages of adaptability and precision. |
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| Keywords: | deep excavation safety evaluation cusp catastrophe model |
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