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海底管线全寿命安全运行的关键问题研究

ISSN号：1000-4750
期刊名称：工程力学
时间：2011.12.15
页码：97-108
分类：TU755.6[建筑科学—建筑技术科学] TV641.43[水利工程—水利水电工程]
作者机构：[1]The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China, [2]Institute of Earthquake Engineering, School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
相关基金：Supported by： Science Fund for Creative Research Groups of the National Natural Science Foundation of China Under Grant No. 51121005; National Natural Science Foundation of China Under Grant No. 51138001,90815024, 50808032 and 50908032; the Fundamental Research Funds for the Central Universities of China Under Grant No. DUT11ZD110Acknowledgement This project was supported by the Science Fund for Creative Research Groups of the National Natural Science Foundation of China （No. 51121005）, National Natural Science Foundation of China （No. 51138001, 90815024, 50808032, 50908032）, and the Fundamental Research Funds for the Central Universities of China （No. DUT11ZD110）. These supports are gratefully acknowledged.
相关项目：工程安全与监控

关键词：混凝土面板堆石坝, 地震期, 数值分析, 汶川, 水平施工缝, 抗剪强度, 最大位移, 永久变形, Zipingpu CFRD, construction joints, dislocation, numerical simulation, Wenchuan earthquake

中文摘要：

面对的 Rockfill 水坝(CFRD ) 显然是的 Zipingpu 水泥在 2008 在 Wenchuan 地震期间损坏了。大量脱臼在 EL 沿着水平构造关节发生了。845m，在脸之间，平板在第二和第三个阶段构造了。脱臼的最大的排水量到达了 17cm。在这研究，平板脱臼用有限元素(FE ) 被调查分析。基于紧张，潜力被使用在 Wenchuan 地震期间计算 Zipingpu 水坝的永久变丑的方法。平板脱臼的计算大小与领域大小显示出好协议。脱臼机制被讨论。结果证明具体平板的脱臼是在 rockfill 材料的永久变丑以后的随后的损坏。shear 力量和构造关节，水库水水平和震波的方向的效果被学习。shear 力量和构造的方向连接，水库水在脱臼排水量上铺平并且有重要效果。脱臼能被象改变构造关节的方向或在水平关节改进 shear 力量那样的措施有效地减少。

英文摘要：

The Zipingpu Concrete Faced Rockfill Dam （CFRD） was obviously damaged during the Wenchuan earthquake in 2008. A wide range of dislocations occurred along the horizontal construction joints at EL. 845m, between the face slabs constructed in the second and third stages. The maximum displacement of the dislocations reached 17cm. In this study, the slab dislocations were investigated using finite element （FE） analysis. The method based on strain potential was applied to compute the permanent deformation of the Zipingpu Dam during the Wenchuan earthquake. The calculated magnitude of the slab dislocation showed good agreements with the field measurements. The dislocation mechanism was discussed. The results show that the dislocation of the concrete slab is a subsequent damage after the permanent deformation of the rockfill materials. The effects of the shear strength and the direction of the construction joints, the reservoir water level and the seismic waves were studied. The shear strength and the direction of the construction joints, reservoir water level and have a significant effect on the dislocation displacement. The dislocation can be effectively reduced by measures such as changing the direction of the construction joints or improving the shear strength at the horizontal joints.

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