本文選題：交通荷載　切入點：埋地管道　出處：《鄭州大學》2017年碩士論文　論文類型：學位論文

【摘要】：隨著城市化進程的不斷加快,交通和市政公用工程發(fā)展突飛猛進,埋地管道的應用越來越廣泛。由于受到地理位置以及工程實際的限制,大多數(shù)管道都是埋設在地下的。埋地管道一方面受到其上方的土體作用,另外也受到來自路面的交通荷載、地面堆載以及管道內(nèi)部流體沖擊作用。由于這些作用的存在,管道會產(chǎn)生橫向以及縱向的彎曲變形,這種彎曲變形會導致管道出現(xiàn)破損,進而造成管道滲漏,甚至爆管等情況。實際工程中的長管道是由多節(jié)短管道連接而成,管節(jié)部位是其最易發(fā)生破損的部位。本文通過對交通荷載下管道管節(jié)處應力變形特性的研究,來找出不同因素對管道管節(jié)應力變形的影響。通過研究得出了一些對埋地管道設計以及施工、防護措施等可參考的結(jié)論,主要研究內(nèi)容和工作包括:1、針對我國目前埋地管道現(xiàn)狀和未來發(fā)展趨勢進行了分析,討論了交通荷載對管道的危害,總結(jié)了目前國內(nèi)外學者對埋地管道的研究。2、分別就埋地管道所需的交通荷載模型、管道模型、土體模型、管土相互作用模型進行探討,選擇較為合理的模型,并從理論上解釋其合理性,為建立正確的有限元模型提供理論基礎。3、運用ABAQUS大型有限元模擬軟件對集中靜載以及沖擊荷載作用下埋地管道力學響應進行了計算。分別研究了集中靜載以及沖擊荷載作用下荷載大小、作用位置、土體模量以及管道埋深四種不同因素對管道力學性狀的影響,找出不同工況下管道整體以及管道管節(jié)應力變形規(guī)律。4、通過對鄭州市老舊污水管道檢測項目以及廣州市供水網(wǎng)管節(jié)封堵項目的研究分析,驗證了在實際工程中管節(jié)是管道最易發(fā)生破壞的位置。針對管節(jié)處的破壞,通過現(xiàn)場試驗以及工程實例,提出保護管道管節(jié)的一種新型措施。
[Abstract]:With the acceleration of urbanization, traffic and municipal utilities are developing by leaps and bounds, and the application of buried pipelines is becoming more and more extensive. Most of the pipelines are buried underground. Buried pipelines are affected not only by the soil above them, but also by the traffic load from the road, the surcharge on the ground, and the fluid impact inside the pipeline. The pipeline will produce transverse and longitudinal bending deformation, which will lead to pipeline breakage, which will lead to pipe leakage, even pipe burst. In actual engineering, long pipe is connected by multi-section and short pipeline. In this paper, the stress and deformation characteristics of pipe joints under traffic load are studied. In order to find out the influence of different factors on the stress and deformation of pipe joints, some conclusions for reference to the design, construction and protection measures of buried pipeline are obtained through the research. The main research contents and work include: 1. According to the present situation and future development trend of buried pipeline in China, the harm of traffic load to pipeline is discussed. This paper summarizes the domestic and foreign scholars' research on buried pipeline at present, discusses the traffic load model, pipeline model, soil model and pipe-soil interaction model respectively, and selects the more reasonable model. And explain its rationality theoretically, In order to establish the correct finite element model, the mechanical response of buried pipeline under concentrated static load and impact load is calculated by using ABAQUS software. The concentrated static load and the impact load are studied respectively. Load size under impact load, The influence of four different factors, such as the position of action, the modulus of soil and the buried depth of pipeline, on the mechanical properties of pipeline, Find out the stress and deformation law of the whole pipeline and pipe joint under different working conditions. Through the research and analysis of the old sewage pipeline inspection project in Zhengzhou and the water supply network section sealing project in Guangzhou, It is verified that pipe section is the most vulnerable site for pipeline failure in practical engineering. A new method to protect pipe joint is put forward through field test and engineering example.
【學位授予單位】：鄭州大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU990.3

【相似文獻】

相關期刊論文 前10條

1 田寶全;不開挖修復埋地管道技術[J];天津科技;2001年05期

2 趙東明 ,傅成文;埋地管道施工中的若干問題與防治[J];黑河科技;2003年03期

3 張慧敏,潘家禎;國內(nèi)外在役埋地管道的研究動向[J];上海應用技術學院學報(自然科學版);2003年02期

4 張慧敏,潘家禎,孫占梅;現(xiàn)有埋地管道腐蝕檢測方法比較[J];上海應用技術學院學報(自然科學版);2004年02期

5 于潤橋;鄧賢遠;胡博;程強強;鄒恒財;陳穎;;探頭參數(shù)對瞬變電磁法檢測埋地管道腐蝕的影響[J];四川兵工學報;2012年01期

6 張鑫;黃曉靚;;穿越活動斷層埋地管道的應變分析[J];管道技術與設備;2012年06期

7 李慶同;;在沿海地區(qū)軟地基條件下埋地管道自沉法施工工藝[J];安裝;2013年06期

8 李宗興;;埋地管道防腐及施工工藝[J];冶金動力;1986年04期

9 李長升,王仲捷,高海,李維敏,李娥;埋地管道現(xiàn)場激震試驗研究[J];油氣儲運;1995年01期

10 YvesFriedmann,BernardDebouvry,潘光坦;分析的設計方法有助于防止埋地管道隆起(一)[J];國外油田工程;1997年06期

相關會議論文 前10條

1 陳貴清;郝婷s，

本文編號：1621625