| 碾压混凝土断裂的数值仿真分析 |
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| 引用本文： | 赵中极,张镜剑.碾压混凝土断裂的数值仿真分析[J].华北水利水电学院学报,1995,16(3):1-7. |
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| 作者姓名： | 赵中极 张镜剑 |
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| 作者单位： | [1]华北水利水电学院院办 [2]华北水利水电学院水利系 |
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| 摘 要： | 本文提出了一种计算模拟混凝土构件荷栽──位移全过程曲线的方法──刚度荷载法，并采用基于钝裂带模型（ＢＣＢＭ）的混凝土材料全量型本构关系和三线型应变软化为线，编制了相应的计算分析程序，对碾压混凝土三点弯曲梁、楔入劈拉、碾压混凝土拱坝诱导缝典型结构等构件进行了计算分析，得到了结构”的荷载一位移全过程曲线、碾压混凝土材料拉伸软化曲线参数等一些有意义的数据和结果。计算结果与试验结果及用虚拟裂纹模型计算的结果吻合较好。
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| 关 键 词： | 碾压混凝土，断裂，刚度荷载法，钝裂纹带模型 |
Numberical Simulation Analysis for Fracture of Rollcrete |
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| ZHao Zhongji, Zhang Jingjian, Yang Yaohong.Numberical Simulation Analysis for Fracture of Rollcrete[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,1995,16(3):1-7. |
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| Authors: | ZHao Zhongji Zhang Jingjian Yang Yaohong |
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| Affiliation: | ZHao Zhongji; Zhang Jingjian; Yang Yaohong |
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| Abstract: | In this paper, a new method of computing load-displacement full process for concrete member--stiff load method is given. Using total stress-- strain relation for material of concrete and three--lines strain--softening curve basing on blunt crack band model (BCBM), relevant program of computing and analysising is written. Then,some kinds of member such as threepoints bending beam,line-load test (the Brazilian test) and typical structure for induced crack of rollcrete arch dam is steadied, and some meaning data and results including loaddisplacement full process curve of structure and the parameters of tensive softening curve for materialof concrete is obtained. Outcome of computing is compatible with trial outcome .and outcome of computing by using fictitious crack model (FCM). |
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| Keywords: | Rollcrete Fracture Stiff load method BCBM |
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