| 双排钢板桩围堰的冗余度分析 |
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| 引用本文： | 江 杰,顾倩燕,胡 何,俞梅欣,马少坤.双排钢板桩围堰的冗余度分析[J].岩土力学,2015,36(Z1):518-522. |
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| 作者姓名： | 江 杰 顾倩燕 胡 何 俞梅欣 马少坤 |
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| 作者单位： | 1. 广西大学 土木建筑工程学院，广西 南宁 530004；2. 广西大学 广西防灾减灾与结构安全重点实验室，广西 南宁 530004；
3. 中船第九设计研究院工程有限公司，上海 200063；4. 桂林理工大学 广西岩土力学与工程重点实验室，广西 桂林 541004 |
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| 基金项目： | 国家自然科学基金（No.51068002，No.41362016）；广西防灾减灾与结构安全重点实验室开放课题（No.2014ZDK0010）；广西岩土力学与工程重点实验室资助课题（No.14KF-03）。 |
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| 摘 要： | 将冗余度理论引入到双排钢板桩围堰的设计中，提出双排钢板桩围堰支护体系冗余度的定义与设计方法的初步框 架。以拉杆系统的冗余度分析为例，采用拆除构件法，对其冗余度进行了定量分析。结果表明，下道拉杆的冗余度参数明显低于上道拉杆，其失效后会明显降低整个围堰支护体系的刚度、强度和稳定性，会导致整个围堰的破坏坍塌，这与工程实际相吻合。以上分析验证了冗余度理论在双排钢板桩围堰工程中适用性及可行性。
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| 关 键 词： | 双排钢板桩围堰 冗余度 数值模拟 |
| 收稿时间： | 2015-03-18 |
Study of redundancy of double-row steel sheet piles cofferdam |
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| JIANG Jie,GU Qian-yan,HU He,YU Mei-xin,MA Shao-kun.Study of redundancy of double-row steel sheet piles cofferdam[J].Rock and Soil Mechanics,2015,36(Z1):518-522. |
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| Authors: | JIANG Jie GU Qian-yan HU He YU Mei-xin MA Shao-kun |
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| Institution: | 1. College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, China;
2. Guangxi Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning, Guangxi 530004, China;
3. China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China;
4. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin, Guangxi 541004, China |
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| Abstract: | The redundancy theory is introduced into the double-row steel sheet piles cofferdam design. The preliminary framework of the definition and design of double-row steel sheet piles cofferdam supporting system redundancy are proposed. Taking the rod system redundancy analysis for example, alternate path method is adopted to quantitatively analyze for redundancy of the rod system. The results show that the redundancy parameters of lower rods are significantly lower than the upper rods; their failure can significantly reduce the stiffness, strength and stability of cofferdam supporting system; their failure even leads to the destruction of the whole cofferdam to collapse; it is consistent with the engineering practice. The above analysis verified the applicability and feasibility of the redundancy theory for double-row steel sheet piles cofferdam engineering. |
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| Keywords: | double-row steel sheet piles cofferdam redundancy numerical simulation |
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