岩溶漏斗水库混凝土封底拱结构应力变形分析
发布时间：2018-12-19 19:49
【摘要】：为了研究堵漏工程中混凝土封底结构在水荷载、淤砂荷载以及温度荷载作用下的应力变形情况,进行有限元分析。结果表明:在茨竹湾水库库底岩采用混凝土拱结构进行封底,能够满足实际工程需要;各种工况下混凝土封底拱结构变形以及应力分布均匀,未出现应力集中区;沉降量最大出现在封底拱结构中心范围;最大拉应力主要分布在封底拱结构长轴方向断面两端顶部;最大压应力主要分布在封底拱结构短轴方向断面两端底部;拱结构底面到表面为升温工况将有利于其稳定;对封底拱结构轴断面四周进行针对性加厚处理,以满足拱结构的应力要求。
[Abstract]:In order to study the stress and deformation of concrete bottom structure under water load, silt load and temperature load, finite element analysis was carried out. The results show that the concrete arch structure can be used to seal the bottom of the reservoir bottom rock of the Tizhuwan Reservoir, which can meet the practical engineering needs, and the deformation and stress distribution of the concrete bottom arch structure is uniform under various working conditions, and no stress concentration zone appears. The maximum settlement occurs in the center of the bottom arch structure, the maximum tensile stress is mainly distributed at the top of the long axial section of the bottom arch structure, the maximum compressive stress is mainly distributed at the bottom of the short axial section of the bottom arch structure. In order to meet the stress requirement of arch structure, the arch structure will be stabilized under the condition of heating from the bottom to the surface, and the circumference of axial section of the bottom arch structure will be thickened accordingly in order to meet the stress requirements of the arch structure.
【作者单位】： 重庆交通大学水利水运工程教育部重点实验室;重庆交通大学重庆市高校水工建筑物健康诊断技术与设备工程研究中心;
【基金】：“十二五”国家科技支撑计划项目(2015BAK09B01) 重庆市基础与前沿研究计划项目(重点)(cstc2015jcyjBX0139) 重庆市研究生教育创新基金资助项目(CYS17126)
【分类号】：TV33
本文编号：2387369
[Abstract]:In order to study the stress and deformation of concrete bottom structure under water load, silt load and temperature load, finite element analysis was carried out. The results show that the concrete arch structure can be used to seal the bottom of the reservoir bottom rock of the Tizhuwan Reservoir, which can meet the practical engineering needs, and the deformation and stress distribution of the concrete bottom arch structure is uniform under various working conditions, and no stress concentration zone appears. The maximum settlement occurs in the center of the bottom arch structure, the maximum tensile stress is mainly distributed at the top of the long axial section of the bottom arch structure, the maximum compressive stress is mainly distributed at the bottom of the short axial section of the bottom arch structure. In order to meet the stress requirement of arch structure, the arch structure will be stabilized under the condition of heating from the bottom to the surface, and the circumference of axial section of the bottom arch structure will be thickened accordingly in order to meet the stress requirements of the arch structure.
【作者单位】： 重庆交通大学水利水运工程教育部重点实验室;重庆交通大学重庆市高校水工建筑物健康诊断技术与设备工程研究中心;
【基金】：“十二五”国家科技支撑计划项目(2015BAK09B01) 重庆市基础与前沿研究计划项目(重点)(cstc2015jcyjBX0139) 重庆市研究生教育创新基金资助项目(CYS17126)
【分类号】：TV33
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1 李肇恢;;流沙软基采用拱结构的研究[J];农田水利与小水电;1989年04期
2 黄晓燕,张友连;桩拱结构整治滑坡设计[J];江西水利科技;2002年03期
3 谢建钢;八字折线拱结构在中小跨度建筑物中的应用[J];湖南水利;1996年03期
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