GFRP筋增强混凝土重力坝抗震性能研究
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摘要
为提高混凝土重力坝抵抗地震的能力,采取在坝颈部位布置GFRP筋的措施,利用ANSYS有限元软件进行了不同地震加速度峰值作用下的非线性动力时程分析,并比较了坝体布置和未布置GFRP筋两种情况下的坝体裂缝分布和主应力形态。结果表明,坝颈部GFRP筋加固措施对增强混凝土重力坝抗震性能有一定作用。
In order to improve aseismic capacity of concrete gravity dam,this paper takes measures with GFRP rebar in the neck of dam.Under conditions of different earthquake peak acceleration,nonlinear dynamic time history analysis is completed with ANSYS finite element software.And then the crack distribution and principal stress form of the dam are compared with and without GFRP rebar.The results show that the reinforced measure with GFRP rebar has played a role in enhancing aseismic performance of concrete gravity dam.
In order to improve aseismic capacity of concrete gravity dam,this paper takes measures with GFRP rebar in the neck of dam.Under conditions of different earthquake peak acceleration,nonlinear dynamic time history analysis is completed with ANSYS finite element software.And then the crack distribution and principal stress form of the dam are compared with and without GFRP rebar.The results show that the reinforced measure with GFRP rebar has played a role in enhancing aseismic performance of concrete gravity dam.
引文
[1]张钢琴.纤维聚合物锚杆的锚固机理及数值分析[D].郑州:郑州大学,2004.
[2]谢晶晶.纤维增强塑料筋锚杆锚固机理及设计方法的研究[D].郑州:郑州大学,2002.
[3]姜淑梅,王丹,金峤,等.高混凝土重力坝抗震配筋效果的模型试验研究[J].水电能源科学,2009,27(4):97-99,83.
[4]马文义,李志业,唐协,等.GFRP筋加强混凝土梁正截面承载力的试验研究[A].第十一届全国纤维混凝土学术会议论文集[C].大连:大连理工大学出版社,2006:203-207.
[5]Robert Mathieu,Cousin Patrice,Benmokrane Bra-him.Durability of GFRP Reinforcing Bars Embed-ded in Moist Concrete[J].Journal of Composites forConstruction,2009,13(2):66-73.
[6]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.
[7]尚晓江,邱峰,赵海峰.ANSYS结构有限元高级分析方法与范例应用[M].北京:中国水利水电出版社,2006.
[8]Hillerborg A,Modeer M,Petersson P E.Analysisof Crack Formation and Crack Growth in Concreteby Means of Fracture Mechanics and Finite Element[J].Cement and Concrete Research,1976,6(6):773-781.
[9]龙渝川,张楚汉,周元德.基于弥散与分离裂缝模型的混凝土开裂比较研究[J].工程力学,2008,25(3):80-84.
[10]中国水利水电科学研究院.水工建筑物抗震设计规范(DL5073-2000)[S].北京:中国电力出版社,2001.
[2]谢晶晶.纤维增强塑料筋锚杆锚固机理及设计方法的研究[D].郑州:郑州大学,2002.
[3]姜淑梅,王丹,金峤,等.高混凝土重力坝抗震配筋效果的模型试验研究[J].水电能源科学,2009,27(4):97-99,83.
[4]马文义,李志业,唐协,等.GFRP筋加强混凝土梁正截面承载力的试验研究[A].第十一届全国纤维混凝土学术会议论文集[C].大连:大连理工大学出版社,2006:203-207.
[5]Robert Mathieu,Cousin Patrice,Benmokrane Bra-him.Durability of GFRP Reinforcing Bars Embed-ded in Moist Concrete[J].Journal of Composites forConstruction,2009,13(2):66-73.
[6]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.
[7]尚晓江,邱峰,赵海峰.ANSYS结构有限元高级分析方法与范例应用[M].北京:中国水利水电出版社,2006.
[8]Hillerborg A,Modeer M,Petersson P E.Analysisof Crack Formation and Crack Growth in Concreteby Means of Fracture Mechanics and Finite Element[J].Cement and Concrete Research,1976,6(6):773-781.
[9]龙渝川,张楚汉,周元德.基于弥散与分离裂缝模型的混凝土开裂比较研究[J].工程力学,2008,25(3):80-84.
[10]中国水利水电科学研究院.水工建筑物抗震设计规范(DL5073-2000)[S].北京:中国电力出版社,2001.
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