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    深水海底用管管環(huán)壓潰試驗可行性分析

    Feasibility Analysis for Ring Collapse Testing to Deep-water Submarine Linepipe

    • 摘要: 鑒于全尺寸鋼管壓潰試驗對試驗設備要求極高，且費用昂貴、安裝及試驗周期長，在3 500 m深水海底用管的生產(chǎn)試制檢驗中設計了管環(huán)壓潰試驗裝置。介紹該管環(huán)壓潰試驗裝置的原理、結(jié)構(gòu)、試樣制備方法和試驗流程，計算理論壓潰極限值，并進行實物管環(huán)壓潰試驗。分析認為：該管環(huán)壓潰試驗裝置結(jié)構(gòu)簡單、試驗程序科學，能實現(xiàn)可持續(xù)、重復性好的鋼管管環(huán)抗壓潰極限值的檢測；鋼管的橢圓度和壁厚精度是影響鋼管壓潰性能的敏感性因素。

       

      Abstract: In light of the fact that the full-scale steel pipe collapse test has such advantages as stringent testing criteria, high operation cost, and long installation and working cycle, etc., a pipe-ring collapse testing system is designed to test the 3 500 m deep-water submarine linepipe during the trial production inspection.Elaborated in the paper are the main aspects of the said testing system, including the operating principle, the structure, the specimen-preparation method, the testing procedure, and calculation of the theoretic collapse limit value.And the system is actually used to perform pipe-ring collapse test.It is identified via the analysis that the testing system is in possession of such advantages as simplified configuration, scientific test procedure, and being capable of performing continuous ring-collapse limit value testing to steel tubes with high repeatability.It is also emphasized that the ovality and wall thickness tolerance are the sensitive factors which affect the collapse performance of the steel pipe.

       

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