| 李雪春,陈重华,徐昕.非整体拱坝结构分析研究[J].水利学报,2002,33(6):0047-0053 |
| 非整体拱坝结构分析研究 |
| Study on non-integrity of arch dams |
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| DOI： |
| 中文关键词: 非整体拱坝 横缝 键槽 灌浆质量 有限元法 |
| 英文关键词: non-integrity arch dam transverse joint joint key groove grouting quality FEM |
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| 中文摘要: |
| 本文介绍了二种不同的接缝模型，并用以模拟拱坝横缝，进行了非整体拱坝有限元分析.分析结果表明：计算中考虑分期施工，对拱坝应力有明显影响；拱坝中的横缝虽经压力灌浆并设置键槽，仍有可能拉裂或剪坏，引起坝体内应力重分布，从而改变拱坝整体应力状态，同时横缝的影响与坝体的厚度和气候条件有关，因此应进行非整体拱坝的非线性分析.文中还分析了灌浆质量对坝体应力的影响，计算结果表明，只要浆体灌进了接缝，浆体质量对坝体应力和变形的影响是很小的.本文最后还对二种不同的接缝模型进行了比较，二者计算结果基本相同. |
| 英文摘要: |
| Two kinds of joint for modeling the transverse joint in FEM analysis on non-integrity of arch dam are introduced. The study shows that: the stress distribution of arch dam will be significantly changed in different stages of construction; the transverse uoints will be failured even though the joint key groove is established and grouted under pressure, forming the re-distribution of stress in the dam; the effect of transverse joint is closely related to dam thickness and climate condition. Consequently, it is necessary to carry out the non-linear analysis of the dam. The study also shows that the grouting quality has minor effect on the stress and deformation of the dam. |
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