洹河景观水闸工程抗震安全评价研究
|
摘要
针对洹河地区特有的地质条件和高烈度抗震要求,基于ANSYS平台建立了水闸-地基三维有限元模型,进行了地震动时程分析。研究了水闸结构的地震动应力和位移响应,分析了结构的薄弱部位。结论显示:规范要求的水平向地震作用,垂直水流向的地震作用对水闸结构是控制性要素。在水平方向地震作用下,于槽闸结构整体安全,但框架结构柔度较大,局部需加强配筋。
Aim at the specific geological conditions and anti-seismic demand for high intensity in Huanhe River area,a three-dimensional finite element model for sluice-foundation on the soft soil was built based on ANSYS.The time-history of seismic and displacement response and dynamic stress of the structure was studied,especially the weak part of the sluice after earthquake.The results show that the horizontal earthquake action and the earthquake action vertical water flow action are key elements to the gate structure safety.Under the horizontal earthquake action,the overall Yucao sluice is safe overall,but the frame structure flexibility is bigger,so regional reinforcement is necessary to be strengthened.
Aim at the specific geological conditions and anti-seismic demand for high intensity in Huanhe River area,a three-dimensional finite element model for sluice-foundation on the soft soil was built based on ANSYS.The time-history of seismic and displacement response and dynamic stress of the structure was studied,especially the weak part of the sluice after earthquake.The results show that the horizontal earthquake action and the earthquake action vertical water flow action are key elements to the gate structure safety.Under the horizontal earthquake action,the overall Yucao sluice is safe overall,but the frame structure flexibility is bigger,so regional reinforcement is necessary to be strengthened.
引文
[1]河南省豫北水利勘测设计院.安阳市城市水系规划三年建设洹河景观建设工程(于槽闸)初步设计[R].安阳:河南省豫北水利勘测设计院,2010.
[2]中华人民共和国水利部.SL203—97水工建筑物抗震设计规范[S].北京:中国水利水电出版社,1998.
[3]张燎军.闸涵结构的抗震分析与设计[J].世界地震工程,2003,19(2):67-71.
[4]胡晓.水闸震害调查与分析[J].水力发电,2009,35(5):18-20.
[5]余雄,杨怀平,王曾璇,等.挡水闸的地震响应分析[J].水利水运科学研究,2000,9(3):22-26.
[6]张柏成,李同春.百色水电站进水塔抗震分析[J].水利水电科技进展,2004,24(1):29-31.
[2]中华人民共和国水利部.SL203—97水工建筑物抗震设计规范[S].北京:中国水利水电出版社,1998.
[3]张燎军.闸涵结构的抗震分析与设计[J].世界地震工程,2003,19(2):67-71.
[4]胡晓.水闸震害调查与分析[J].水力发电,2009,35(5):18-20.
[5]余雄,杨怀平,王曾璇,等.挡水闸的地震响应分析[J].水利水运科学研究,2000,9(3):22-26.
[6]张柏成,李同春.百色水电站进水塔抗震分析[J].水利水电科技进展,2004,24(1):29-31.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心