| 含周向裂纹管道在非对称弯矩组合载荷作用下塑性极限载荷分析 |
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| 引用本文： | 署恒木. 含周向裂纹管道在非对称弯矩组合载荷作用下塑性极限载荷分析[J]. 中国石油大学学报(自然科学版), 2001, 25(2) |
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| 作者姓名： | 署恒木 |
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| 作者单位： | 石油大学建筑工程系, |
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| 摘 要： | 根据净截面垮塌准则 ,分别求出了含埋藏裂纹、外表面裂纹、内表面裂纹、穿透裂纹管道在非对称弯矩、内压及轴力三种载荷共同作用时的塑性极限载荷计算公式 ,并给出了穿透裂纹在纯弯曲时中性轴圆心角和无量纲弯矩系数随裂纹偏离角的变化情况。所给出的计算公式可用于管道安全评价。
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| 关 键 词： | 周向裂纹 管道 内压 轴力 非对称弯矩 极限载荷 |
PLASTIC LIMIT LOAD OF CIRCUMFERENTIALLY CRACKED PIPES UNDER AXIAL FORCE, INTERNAL PRESSURE AND ASYMMETRICAL BENDING MOMENT |
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| SHU Heng-mu. PLASTIC LIMIT LOAD OF CIRCUMFERENTIALLY CRACKED PIPES UNDER AXIAL FORCE, INTERNAL PRESSURE AND ASYMMETRICAL BENDING MOMENT[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2001, 25(2) |
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| Authors: | SHU Heng-mu |
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| Affiliation: | SHU Heng mu |
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| Abstract: | The formulas for calculating plastic limit load of pipes with circumferential surface crack, embedded crack and through wall crack under combined load of tensile force, asymmetrical bending moment and internal pressure are presented. The analytical results show that as the angle between crack longitudinal symmetrical section and bending moment applying section increases, the loading capability of pipe increases. The formulas are useful for safety assessment of defective pipe. |
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| Keywords: | circumferential crack pipe internal pressure axial force asymmetrical bending moment limit load |
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