钢衬钢筋混凝土坝后背管管坝接缝面安全评价
|
摘要
总结了钢衬钢筋混凝土坝后背管管坝接缝面的构造方式,分析了接缝面的破坏机理,指出地震作用组合工况下接缝面主要有沿缝面的剪切破坏模式和垂直缝面的受拉破坏模式。针对这两种破坏模式,建立了基于接缝面应力状态的极限状态设计表达式,用于对接缝面做结构设计和安全评价。算例分析表明,高烈度地震作用使接缝面呈现较大的拉剪应力状态,采用台阶形键槽并配置适量锚筋可使接缝面满足安全要求,管道与坝体能可靠地联合承载。
The construction mode at the joint between steel lined reinforced concrete penstock on downstream surface of dam is summarized;and the failure mechanisms of the joint are analyzed.Two types of failure modes,shear failure along joint and tension failure perpendicular to joint,are indicated to be the main failure modes under high-intensity earthquake.Based on limit state method,expressions corresponding to the failure modes are established,which can be used to evaluate joint safety.An example is given for interpreting usage of the expressions,which shows that there exists an unfavorable combination stress state in the joint under high-intensity earthquake;and the joint can be safety when employing stepped keyslot and proper quantities of anchor bar.
The construction mode at the joint between steel lined reinforced concrete penstock on downstream surface of dam is summarized;and the failure mechanisms of the joint are analyzed.Two types of failure modes,shear failure along joint and tension failure perpendicular to joint,are indicated to be the main failure modes under high-intensity earthquake.Based on limit state method,expressions corresponding to the failure modes are established,which can be used to evaluate joint safety.An example is given for interpreting usage of the expressions,which shows that there exists an unfavorable combination stress state in the joint under high-intensity earthquake;and the joint can be safety when employing stepped keyslot and proper quantities of anchor bar.
引文
[1]董哲仁.钢衬钢筋混凝土压力管道设计与非线性分析[M].北京:中国水利水电出版社,1998.
[2]傅金筑.水电站坝后背管结构及外包混凝土裂缝研究[M].北京:中国水利水电出版社,2007.
[3]龚国芝,张伟,伍鹤皋,等.钢衬钢筋混凝土压力管道外包混凝土的裂缝控制研究[J].岩土力学,2007,28(1):51-56.GONG Guo-zhi,ZHANG Wei,WU He-gao,et al.Study on crack control of concrete wall of steel lined reinforced concrete penstocks[J].Rock and Soil Mechanics,2007,28(1):51-56.
[4]张伟,吴海林,伍鹤皋,等.刘家峡水电站扩机工程调压井结构研究[J].岩土力学,2005,26(7):1136-1140.ZHANG Wei,WU Hai-Lin,WU He-gao,et al.Structural study on surge chamber in Liujiaxia Hydropower Station[J].Rock and Soil Mechanics,2005,26(7):1136-1140.
[5]蒋锁红,傅金筑.背管工程实例汇编[R].西安:国家电力公司西北勘测设计研究院,2000.
[6]刘宁,乐东义,刘劲松.三峡电站下游坝面钢衬钢筋混凝土管道结构设计[J].人民长江,1997,28(10):21-23.LIU Ning,LE Dong-yi,LIU Jing-song.Structural design of steel-lined reinforcement concrete penstocks on downstream dam slope at TGP[J].Yangtze River,1997,28(10):21-23.
[7]国家电力公司西北勘测设计研究院.DL/T5141-2001水电站压力钢管设计规范[S].北京:中国电力出版社,2002.
[8]长江水利委员会长江勘测规划设计研究院.SL281-2003水电站压力钢管设计规范[S].北京:中国水利水电出版社,2003.
[9]张伟.重力坝下游面钢衬钢筋混凝土压力管道结构研究[博士学位论文D].武汉:武汉大学,2006.
[10]马善定,伍鹤皋.金安桥水电站坝后厂房方案压力背管结构布置及应力与变形专题研究(国内外工程实践)[R].武汉:武汉大学水利水电学院,2005.
[11]蒋锁红.水电站坝后背管规范内容介绍[C]//马善定,伍鹤皋,秦继章编.第五届全国水电站压力管道学术会议.武汉:湖北科学技术出版社,2002:302-312.
[12]孙海涛.坝下游面管管坝接缝面力学特性及其处理措施研究[硕士学位论文D].武汉:武汉水利电力学院,1991.
[13]西北勘测设计研究院.SL/T191-96水工混凝土结构设计规范[S].北京:中国水利水电出版社,1997.
[14]张伟,伍鹤皋,王从保.坝下游面钢衬钢筋混凝土管道结构优化布置[J].水力发电学报,2006,25(4):34-38.ZHANG Wei,WU He-gao,WANG Cong-bao.Optimization on arrangement of steel lining reinforced concrete penstocks on the downstream surface of dam[J].Journal of Hydroelectric Engineering,2006,25(4):34-38.
[15]伍鹤皋,张伟,苏凯.坝下游面钢衬钢筋混凝土外包混凝土合理厚度研究[J].水利学报,2006,37(9):1085-1091.WU He-gao,ZHANG Wei,SU Kai.Study on wall thickness of steel lined reinforced concrete penstock laid on downstream surface of dam[J].Journal of Hydraulic Engineering,2006,37(9):1085-1091.
[16]张伟,伍鹤皋,苏凯.ABAQUS在大体积钢筋混凝土非线性有限元分析中的应用评述[J].水力发电学报,2005,24(5):70-74.ZHANG Wei,WU He-gao,SU Kai.Review for application of ABAQUS in nonlinear FEM analysis of mass reinforced concrete[J].Journal of Hydroelectric Engineering,2005,24(5):70-74.
[17]中国水利水电科学研究院.DL5073-2000水工建筑物抗震设计规范[S].北京:中国电力出版社,2001.
[2]傅金筑.水电站坝后背管结构及外包混凝土裂缝研究[M].北京:中国水利水电出版社,2007.
[3]龚国芝,张伟,伍鹤皋,等.钢衬钢筋混凝土压力管道外包混凝土的裂缝控制研究[J].岩土力学,2007,28(1):51-56.GONG Guo-zhi,ZHANG Wei,WU He-gao,et al.Study on crack control of concrete wall of steel lined reinforced concrete penstocks[J].Rock and Soil Mechanics,2007,28(1):51-56.
[4]张伟,吴海林,伍鹤皋,等.刘家峡水电站扩机工程调压井结构研究[J].岩土力学,2005,26(7):1136-1140.ZHANG Wei,WU Hai-Lin,WU He-gao,et al.Structural study on surge chamber in Liujiaxia Hydropower Station[J].Rock and Soil Mechanics,2005,26(7):1136-1140.
[5]蒋锁红,傅金筑.背管工程实例汇编[R].西安:国家电力公司西北勘测设计研究院,2000.
[6]刘宁,乐东义,刘劲松.三峡电站下游坝面钢衬钢筋混凝土管道结构设计[J].人民长江,1997,28(10):21-23.LIU Ning,LE Dong-yi,LIU Jing-song.Structural design of steel-lined reinforcement concrete penstocks on downstream dam slope at TGP[J].Yangtze River,1997,28(10):21-23.
[7]国家电力公司西北勘测设计研究院.DL/T5141-2001水电站压力钢管设计规范[S].北京:中国电力出版社,2002.
[8]长江水利委员会长江勘测规划设计研究院.SL281-2003水电站压力钢管设计规范[S].北京:中国水利水电出版社,2003.
[9]张伟.重力坝下游面钢衬钢筋混凝土压力管道结构研究[博士学位论文D].武汉:武汉大学,2006.
[10]马善定,伍鹤皋.金安桥水电站坝后厂房方案压力背管结构布置及应力与变形专题研究(国内外工程实践)[R].武汉:武汉大学水利水电学院,2005.
[11]蒋锁红.水电站坝后背管规范内容介绍[C]//马善定,伍鹤皋,秦继章编.第五届全国水电站压力管道学术会议.武汉:湖北科学技术出版社,2002:302-312.
[12]孙海涛.坝下游面管管坝接缝面力学特性及其处理措施研究[硕士学位论文D].武汉:武汉水利电力学院,1991.
[13]西北勘测设计研究院.SL/T191-96水工混凝土结构设计规范[S].北京:中国水利水电出版社,1997.
[14]张伟,伍鹤皋,王从保.坝下游面钢衬钢筋混凝土管道结构优化布置[J].水力发电学报,2006,25(4):34-38.ZHANG Wei,WU He-gao,WANG Cong-bao.Optimization on arrangement of steel lining reinforced concrete penstocks on the downstream surface of dam[J].Journal of Hydroelectric Engineering,2006,25(4):34-38.
[15]伍鹤皋,张伟,苏凯.坝下游面钢衬钢筋混凝土外包混凝土合理厚度研究[J].水利学报,2006,37(9):1085-1091.WU He-gao,ZHANG Wei,SU Kai.Study on wall thickness of steel lined reinforced concrete penstock laid on downstream surface of dam[J].Journal of Hydraulic Engineering,2006,37(9):1085-1091.
[16]张伟,伍鹤皋,苏凯.ABAQUS在大体积钢筋混凝土非线性有限元分析中的应用评述[J].水力发电学报,2005,24(5):70-74.ZHANG Wei,WU He-gao,SU Kai.Review for application of ABAQUS in nonlinear FEM analysis of mass reinforced concrete[J].Journal of Hydroelectric Engineering,2005,24(5):70-74.
[17]中国水利水电科学研究院.DL5073-2000水工建筑物抗震设计规范[S].北京:中国电力出版社,2001.
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