| 销钉间隙对组装式∏型井架前大腿变形与稳定性的影响 |
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| 引用本文： | 韩秀清,华丽缘,郑伯芳. 销钉间隙对组装式∏型井架前大腿变形与稳定性的影响[J]. 吉林工学院学报, 1987, 0(1) |
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| 作者姓名： | 韩秀清 华丽缘 郑伯芳 |
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| 作者单位： | 吉林工学院基础科学系(韩秀清)，兰州石油机械研究所(华丽缘)，吉林工学院基础科学系(郑伯芳) |
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| 摘 要： | 文中讨论了组装式Π型井架前大腿弹性稳定性的计算原理,并进而从理论上探讨了销钉间隙对前大腿的稳定性和横向变形的影响。认为按弹性稳定理论,销钉间隙对前大腿的稳定性不发生影响,只会加大其横向变形,但按弹塑性稳定理论,销钉间隙的存在则会降低其抗失稳承载能力。井架前大腿失稳时几乎都超过弹性范围,故严格说应按弹塑性稳定理论计算之。
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| 关 键 词： | Π型井架 稳定性 销钉间隙 |
Effect of Pin-hole Clearance on Deflexion and Stability of Front Legs of Assembled II-type Derrick |
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| Han Xiuqing Zheng Bofang Hua Liyuan The Basic Science Department LPMRI. Effect of Pin-hole Clearance on Deflexion and Stability of Front Legs of Assembled II-type Derrick[J]. Journal of Jilin Institute of Technology, 1987, 0(1) |
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| Authors: | Han Xiuqing Zheng Bofang Hua Liyuan The Basic Science Department LPMRI |
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| Affiliation: | Han Xiuqing Zheng Bofang Hua Liyuan The Basic Science Department LPMRI |
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| Abstract: | A theory of computing clastic stability and transverse deflexion of front legs of assembled II-type derrick is discussed. And based on the theory, the effect of the clearance between pins and their hole walls on the stability and transverse deflexion is theoretically studied in this paper. It is proved that there is no effect of the pin-hole clearance on the stability of the front legs according to the theory of elastic stability, although it would incrase the transverse deflexion. But according to the theory of elastoplastic stability, the clearance would decrease their capacity against the stability failure.The stress level in the front legs of the derrick when the stability failure takes place is almost beyond the scope of elasticity, and so, in strict sense, the theory of elastoplastic stability should be applied in this case. |
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| Keywords: | II-type derrick structural stability pin-hole clearance |
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