| 悬索桥隧道式复合锚碇承载力计算方法 |
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| 引用本文： | 汪海滨,高波. 悬索桥隧道式复合锚碇承载力计算方法[J]. 东南大学学报(自然科学版), 2005, 35(Z1): 89-94 |
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| 作者姓名： | 汪海滨 高波 |
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| 作者单位： | 西南交通大学土木工程学院,成都,610031 |
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| 基金项目： | 西藏交通厅资助项目，西南交通大学校科研和教改项目 |
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| 摘 要： | 根据现场原位试验结果,分析了悬索桥隧道式复合锚碇系统(隧道式锚碇 预应力锚索)的可能破坏形态及其发生破坏的条件.采用极限理论,建立了锚碇系统的平衡方程.根据实际施工和设计特征,将锚碇-围岩接触面概化处理为4种力学模型,以节理力学理论和试验成果为基础,给出了相应的破坏准则.讨论了承载力简化计算公式中各分项系数的意义和取值方法,并用算例进行了验证.为设计工程师提供了对隧道式复合锚碇的一个整体设计思路和简化计算方法.
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| 关 键 词： | 桥梁和隧道工程 隧道式复合锚碇 接触力学 极限理论 破坏形态 预应力锚索 |
| 文章编号： | 1001-0505(2005)增刊(Ⅰ)-0089-06 |
| 修稿时间： | 2005-05-16 |
Calculation method of bearing capacity of compound tunnel anchorage system of suspension bridge |
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| Wang Haibin,Gao Bo. Calculation method of bearing capacity of compound tunnel anchorage system of suspension bridge[J]. Journal of Southeast University(Natural Science Edition), 2005, 35(Z1): 89-94 |
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| Authors: | Wang Haibin Gao Bo |
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| Abstract: | Based on field test results for compound tunnel anchorage system(tunnel anchorage & prestressed anchorage cable) of suspension bridge,the failure model and failure condition are analyzed.The equilibrium equation of the anchorage system is established based on limit theorem.According to the actual construction technology and design scheme,the anchorage-rock mass interface is generalized into four types of mechanics model,and the failure criterion is correspondingly presented based on rock mass joint mechanics theorem and test achievements.The meaning and option method of subentry coefficient in simplified formula for bearing capacity estimation are discussed.The simplified formula for calculation of bearing capacity of anchorage was validated by practical engineering case.The proposed method provides a simplified calculation and an overall design thought for engineers. |
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| Keywords: | bridge and tunnel engineering compound tunnel anchorage contact mechanism limit theorem failure model prestressed anchorage cable |
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