| 含有裂纹水泥混凝土路面的理论分析 |
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| 作者姓名： | 钟阳 高嫄嫄 李锐 |
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| 作者单位： | 大连理工大学建设工程学部,辽宁大连,116024 |
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| 摘 要： | 以断裂力学理论为基础,将水泥混凝土路面视为Winkler地基上的弹性板,利用傅立叶积分变换,并引入位错密度函数,建立了奇异积分方程,推导出水泥混凝土路面表面存在裂纹时裂纹尖端应力强度因子的解析表达式,然后应用Lobatto-Chebyshev数值方法求解奇异积分方程,得到了应力强度因子的数值解.以实际路面为例,计算了裂...
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| 关 键 词： | 水泥混凝土路面 断裂力学 傅立叶变换 位错密度函数 奇异积分方程 应力强度因子 能量释放率 |
Theoretical analysis of cement concrete pavement with crack |
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| Authors: | ZHONG Yang GAO Yuan-yuan LI Rui |
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| Institution: | (Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The main object of this study is to determine the stress intensity factors in a cement concrete pavement containing a crack in interface based on fracture mechanics theory.In order to simplify the problem,a cement concrete pavement is reduced to an elastic plate on the Winkler foundation.To derive the singular integral equations,Fourier transform and the dislocation density function are used.As a numerical method,Lobatto-Chebyshev integration formula are used to solve the singular integral equations.The numerical solutions of stress intensity factor at the crack tips are given.A cement concrete pavement with an embedded crack is considered. |
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| Keywords: | cement concrete pavement fracture mechanics Fourier transform dislocation density function singular integral equation stress intensity factors energy release rate |
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