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| 高拱坝坝踵混凝土首条裂缝开裂宽度研究 | |
| 引用本文： | 姜亚洲,王义锋,杜小凯,任青文.高拱坝坝踵混凝土首条裂缝开裂宽度研究[J].湖北水力发电,2014(11):16-20. |
| 作者姓名： | 姜亚洲 王义锋 杜小凯 任青文 |
| 作者单位： | 1. 中国长江三峡集团公司乌东德筹备组,云南昆明,650041 2. 水电水利规划设计总院,北京,100120 3. 河海大学力学与材料学院,江苏南京,210098 |
| 摘 要： | 基于混凝土侧向渗透系数与轴拉应变试验曲线、立方定律，通过建立开裂扰动区域流量守恒等式，推导了处于高压水环境下的高坝坝踵混凝土，在上游某额定水头作用下首条裂缝的开裂宽度，以及开裂扰动区域的范围。结果表明，高拱坝坝踵混凝土等级不同，首条裂缝的宽度也不同，但均处于1 E－04 m量级；开裂扰动区域的深度亦不同，但处于1 E＋01 m量级。 |
| 关 键 词： | 高拱坝 坝踵混凝土 首条裂缝 开裂宽度 开裂扰动区域 |
On the Width of the First Fracture Occurred in Concrete in High Arch Dam Heel |
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| JIANG Yazhou,WANG Yifeng,DU Xiaokai,REN Qingwen.On the Width of the First Fracture Occurred in Concrete in High Arch Dam Heel[J].Hubei Water Power,2014(11):16-20. | |
| Authors: | JIANG Yazhou WANG Yifeng DU Xiaokai REN Qingwen |
| Affiliation: | JIANG Yazhou,WANG Yifeng,DU Xiaokai,REN Qingwen(1. Wudongde Preparatory Group, China Three Gorges Corporation, Kunming 650041, China; 2. China Renewable Energy Engineering Institute, Beijing 100120, China; 3. College of Mechanics and Material, Hohai University, Nanjing 210098, China) |
| Abstract: | Based on measured curves of the lateral permeability and the axial tensile strain test of the concrete and the cubic law , the width of the first fracture that may occur in concrete in the high arch dam heel under the condition of a high water pressure , as well as the depth of the disturbed area , is deduced after establishing the flow conservation equa-tion for the disturbed area .Results show that the width of the first fracture is related to the grade of the concrete in the high arch dam heel, while all in the same order of 1E-04 m.Also, the depths of the disturbed concrete area are differ-ent for different concrete grades , while all in the same order of 1E＋01 m. |
| Keywords: | high arch dam concrete in dam heel first fracture fracture width disturbed area |
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