接触面特性对面板堆石坝应力变形的影响性研究
|
摘要
接触面力学特性对混凝土面板堆石坝的安全运营存在重要影响,因此有必要研究垫层料表面喷涂乳化沥青前后的力学特性并分析接触面力学特性对面板堆石坝应力变形的影响。依托某抽水蓄能电站工程,基于Clough和Duncan的接触面非线性本构模型,采用数值分析方法研究了喷涂乳化沥青前后接触面力学特性对面板堆石坝应力变形的影响。计算结果表明,垫层料与混凝土面板接触面特性对面板应力存在一定影响,对大坝应力变形及止水缝变形均无明显影响。当接触面涂抹乳化沥青时,面板拉应力有所降低,说明接触面涂乳化沥青对改善面板受力状态有一定作用。因此,建议在混凝土面板和垫层间涂抹一定厚度的乳化沥青,可起到减小混凝土拉应力,减少裂缝,改善面板工作性状的作用。
The mechanical behavior of soil-structure interface has a great influence on the safety of the concrete-faced rockfill dam(CFRD). Therefore, it is necessary to study the mechanical behavior of interface between cushion material and concrete face slab which is coated with emulsified asphalt. Based on a pumped storage power station, the study on influence of interface behavior on stress and deformation of CFRD is carried out. The nonlinear constitutive model of interface proposed by Clough and Duncan is applied to the numerical analysis. The results show that the behavior of interface between cushion material and concrete face slab has a certain influence on the stress of the slab and has little influence on the stress and deformation of the dam body and sealed joint. If the interface is coated with emulsified asphalt, the tensile stress of the slab is decreasing and the operation status can be improved. Therefore, a certain thickness of emulsified asphalt is suggested to coating the interface between the cushion material and slab, which has the effect on reducing the cracks and improving stress status of the concrete face slab.
The mechanical behavior of soil-structure interface has a great influence on the safety of the concrete-faced rockfill dam(CFRD). Therefore, it is necessary to study the mechanical behavior of interface between cushion material and concrete face slab which is coated with emulsified asphalt. Based on a pumped storage power station, the study on influence of interface behavior on stress and deformation of CFRD is carried out. The nonlinear constitutive model of interface proposed by Clough and Duncan is applied to the numerical analysis. The results show that the behavior of interface between cushion material and concrete face slab has a certain influence on the stress of the slab and has little influence on the stress and deformation of the dam body and sealed joint. If the interface is coated with emulsified asphalt, the tensile stress of the slab is decreasing and the operation status can be improved. Therefore, a certain thickness of emulsified asphalt is suggested to coating the interface between the cushion material and slab, which has the effect on reducing the cracks and improving stress status of the concrete face slab.
引文
[1]白旭宏,黄艺升.天生桥一级水电站混凝土面板堆石坝设计施工及其认识[J].水力发电学报, 2000, 69(2):108-123.BAI Xuhong, HUANG Yisheng. New understandings and major features of the construction and design of TSQ-1 CFRD[J].Journal of Hydroelectric Engineering, 2000, 69(2):108-123.
[2]陈生水,霍家平,章为民.“5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J].岩土工程学报, 2008, 30(6):795-801.CHEN Shengshui, HUO Jiaping, ZHANG Weimin. Analysis of effects of “5.12” Wenchuan Earthquake on Zipingpu concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering,2008, 30(6):795-801.
[3]CLOUGH G W, DUNCAN J M. Finite element analysis of retaining wall behavior[J]. Journal Soil Mechanics&Foundation Division ASCE, 1971, 97(S M12):1657-1674.
[4]胡黎明,濮家骝.土与结构物接触面损伤本构模型[J].岩土力学, 2002, 23(1):6-11.HULiming,PUJialiu.Damagemodelofsoil-structure interface[J]. Rock and Soil Mechanics, 2002, 23(1):6-11.
[5]卢廷浩,鲍伏波.接触面薄层单元耦合本构模型[J].水利学报,2000(2):71-75.LU Tinghao, BAO Fubo. A coupled constitutive model for interface thin-layer element[J]. Journal of Hydraulic Engineering,2000(2):71-75.
[6]冯大阔.粗粒土与结构接触面三维本构规律、机理与模型研究[D].北京:清华大学, 2012.FENG Dakuo. Three-dimensional constitutive laws, mechanism and model of gravel-structure interfaces[D]. Beijing:Tsinghua University, 2012.
[7]龙尧,张家生,陈俊桦.结构接触面剪切特性及软硬化损伤模型[J].华南理工大学学报(自然科学版), 2016, 44(12):128-134.LONG Yao, ZHANG Jiasheng, CHEN Junhua. Shear characteristics of structure interface and its strain-softening and hardening damage model[J]. Journal of South China University of Technology(Natural Science Edition), 2016, 44(12):128-134.
[8]张丙印,师瑞锋,王刚.高面板堆石坝面板脱空问题的接触力学分析[J].岩土工程学报, 2003, 25(3):361-364.ZHANG Bingyin, SHI Ruifeng, WANG Gang. Contact analysis of separation between concrete slab and cushion layer in high concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(3):361-364.
[9]张嘎,张建民.接触面弹塑性损伤模型在面板堆石坝应力变形分析中的应用[J].水力发电学报, 2005, 24(4):5-10.ZHANG Ga, ZHANG Jianmin. Application of elasto-plasticity damage interface model in stress-strain analysis of CFRD[J].Journal of Hydroelectric Engineering, 2005, 24(4):5-10.
[10]岑威钧,李星.面板坝数值分析中接触面模型与接缝模型述评[J].水力发电, 2007:33(2):38-41.CEN Weijun, LI Xing. Review of the contact-surface model and joint model in numerical analysis of CFRD[J]. Water Power,2007:33(2):38-41.
[11] LIUJingmao,ZOUDegao,KONGXianjing.Athreedimensional state-dependent model of soil-structure interface for monotonic and cyclic loading[J]. Computers and Geotechnics,2014, 61:166-177.
[12]刘京茂,孔宪京,邹德高.接触面模型对面板与垫层间接触变形及面板应力的影响[J].岩土工程学报, 2015, 37(4):700-710.LIU Jingmao, KONG Xianjing, ZOU Degao. Effects of interface models on deformation of interface between slab and cushion layer and slab stress of concrete faced rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4):700-710.
[13] Duncan J M, Chang C Y. Nonlinear analysis of stress and strain in soils[J]. Journal of Soil Mechanics and Foundation Division,ASCE, 1970, 96(5):1629-1653.
[14] Duncan J. M., Byrne P. M., Wong K. S. Strength, stress-strain and bulk modulus parameters for finite element analysis of stresses and movements in soil masses[R]. Berkeley:Berkeley University of Calufornia, 1980.
[15]邹德高,尤华芳,孔宪京,等.接缝简化模型及参数对面板堆石坝面板应力及接缝位移的影响研究[J].岩石力学与工程学报, 2009, 28(增1):3257-3263.ZOU Degao, YOU Huafang, KONG Xianjing, et al. Research on joint simplified model and effects of joint parameters on panel stress and joint displacements of faced rockfill dam[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(Supp.1):3257-3263.
[2]陈生水,霍家平,章为民.“5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J].岩土工程学报, 2008, 30(6):795-801.CHEN Shengshui, HUO Jiaping, ZHANG Weimin. Analysis of effects of “5.12” Wenchuan Earthquake on Zipingpu concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering,2008, 30(6):795-801.
[3]CLOUGH G W, DUNCAN J M. Finite element analysis of retaining wall behavior[J]. Journal Soil Mechanics&Foundation Division ASCE, 1971, 97(S M12):1657-1674.
[4]胡黎明,濮家骝.土与结构物接触面损伤本构模型[J].岩土力学, 2002, 23(1):6-11.HULiming,PUJialiu.Damagemodelofsoil-structure interface[J]. Rock and Soil Mechanics, 2002, 23(1):6-11.
[5]卢廷浩,鲍伏波.接触面薄层单元耦合本构模型[J].水利学报,2000(2):71-75.LU Tinghao, BAO Fubo. A coupled constitutive model for interface thin-layer element[J]. Journal of Hydraulic Engineering,2000(2):71-75.
[6]冯大阔.粗粒土与结构接触面三维本构规律、机理与模型研究[D].北京:清华大学, 2012.FENG Dakuo. Three-dimensional constitutive laws, mechanism and model of gravel-structure interfaces[D]. Beijing:Tsinghua University, 2012.
[7]龙尧,张家生,陈俊桦.结构接触面剪切特性及软硬化损伤模型[J].华南理工大学学报(自然科学版), 2016, 44(12):128-134.LONG Yao, ZHANG Jiasheng, CHEN Junhua. Shear characteristics of structure interface and its strain-softening and hardening damage model[J]. Journal of South China University of Technology(Natural Science Edition), 2016, 44(12):128-134.
[8]张丙印,师瑞锋,王刚.高面板堆石坝面板脱空问题的接触力学分析[J].岩土工程学报, 2003, 25(3):361-364.ZHANG Bingyin, SHI Ruifeng, WANG Gang. Contact analysis of separation between concrete slab and cushion layer in high concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(3):361-364.
[9]张嘎,张建民.接触面弹塑性损伤模型在面板堆石坝应力变形分析中的应用[J].水力发电学报, 2005, 24(4):5-10.ZHANG Ga, ZHANG Jianmin. Application of elasto-plasticity damage interface model in stress-strain analysis of CFRD[J].Journal of Hydroelectric Engineering, 2005, 24(4):5-10.
[10]岑威钧,李星.面板坝数值分析中接触面模型与接缝模型述评[J].水力发电, 2007:33(2):38-41.CEN Weijun, LI Xing. Review of the contact-surface model and joint model in numerical analysis of CFRD[J]. Water Power,2007:33(2):38-41.
[11] LIUJingmao,ZOUDegao,KONGXianjing.Athreedimensional state-dependent model of soil-structure interface for monotonic and cyclic loading[J]. Computers and Geotechnics,2014, 61:166-177.
[12]刘京茂,孔宪京,邹德高.接触面模型对面板与垫层间接触变形及面板应力的影响[J].岩土工程学报, 2015, 37(4):700-710.LIU Jingmao, KONG Xianjing, ZOU Degao. Effects of interface models on deformation of interface between slab and cushion layer and slab stress of concrete faced rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(4):700-710.
[13] Duncan J M, Chang C Y. Nonlinear analysis of stress and strain in soils[J]. Journal of Soil Mechanics and Foundation Division,ASCE, 1970, 96(5):1629-1653.
[14] Duncan J. M., Byrne P. M., Wong K. S. Strength, stress-strain and bulk modulus parameters for finite element analysis of stresses and movements in soil masses[R]. Berkeley:Berkeley University of Calufornia, 1980.
[15]邹德高,尤华芳,孔宪京,等.接缝简化模型及参数对面板堆石坝面板应力及接缝位移的影响研究[J].岩石力学与工程学报, 2009, 28(增1):3257-3263.ZOU Degao, YOU Huafang, KONG Xianjing, et al. Research on joint simplified model and effects of joint parameters on panel stress and joint displacements of faced rockfill dam[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(Supp.1):3257-3263.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |