鋼波紋管的力學(xué)性能分析
發(fā)布時間:2018-01-10 07:31
本文關(guān)鍵詞:鋼波紋管的力學(xué)性能分析 出處:《東南大學(xué)學(xué)報(自然科學(xué)版)》2017年06期 論文類型:期刊論文
更多相關(guān)文章: 鋼波紋管道 等效方法 力學(xué)性能 現(xiàn)場施工
【摘要】:提出采用截面參數(shù)分析法與有限元數(shù)值模擬相結(jié)合的方法對鋼波紋管受力變形進(jìn)行計算分析.將截面參數(shù)分析法所得計算結(jié)果與美國ASTM規(guī)范對比,驗證了截面參數(shù)分析法的有效性.根據(jù)截面參數(shù)計算結(jié)果將鋼波紋管道等效為實壁管道,并在此基礎(chǔ)上對應(yīng)不同工況建立有限元數(shù)值模型,進(jìn)一步研究了鋼波紋管道在填土施工過程中的變形與內(nèi)力特性,總結(jié)了其力學(xué)性能與填土高度、管道規(guī)格的對應(yīng)關(guān)系和鋼波紋管道設(shè)計中的建議管道規(guī)格.最終根據(jù)鋼波紋管道施工現(xiàn)場工況,對管周土體豎向土壓力及管道環(huán)向應(yīng)變進(jìn)行計算,通過與現(xiàn)場實測數(shù)據(jù)對比,驗證了該方法模擬鋼波紋管管土相互作用的有效性.研究表明所提出的鋼波紋管分析方法簡便準(zhǔn)確,并能很好地再現(xiàn)鋼波紋管道的力學(xué)特性.
[Abstract]:The method of section parameter analysis and finite element numerical simulation is used to calculate and analyze the stress and deformation of steel bellows. The results obtained by section parameter analysis are compared with ASTM code of USA. The validity of the section parameter analysis method is verified. According to the results of section parameter calculation, the steel bellows are equivalent to the solid wall pipe, and on this basis, the finite element numerical model is established for different working conditions. The deformation and internal force characteristics of steel bellows in the process of filling construction are further studied, and the mechanical properties and filling height are summarized. The corresponding relationship of pipe specifications and the proposed pipe specifications in the design of steel corrugated pipeline. Finally, according to the construction site conditions of steel corrugated pipeline, the vertical earth pressure of soil around the pipe and the circumferential strain of pipeline are calculated. The effectiveness of this method in simulating the interaction between steel corrugated pipe and soil is verified by comparing with the field measured data. The results show that the proposed method is simple and accurate. The mechanical properties of steel bellows can be well reproduced.
【作者單位】: 東南大學(xué)巖土工程研究所;上海市政工程設(shè)計研究總院(集團(tuán))有限公司;
【基金】:國家自然科學(xué)基金資助項目(51578147,51278099)
【分類號】:U173.1
【正文快照】: 鋼波紋管因施工快捷、經(jīng)濟(jì)的特點逐漸被工程界接受,一些科研人員也開始針對鋼波紋管的力學(xué)性能進(jìn)行研究.蔣雪梅等[1]采用ANSYS通用程序中的Shell93單元沿波長方向?qū)艿啦y直接進(jìn)行等分以模擬波紋并建立數(shù)值模型進(jìn)行分析;韓曉強(qiáng)[2]將半波長波紋管劃分為五節(jié)點,波紋管模型劃分
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