基于智能壓實技術(shù)對填筑體路基壓實度試驗研究
發(fā)布時間:2018-06-10 14:45
本文選題:填筑體 + 智能壓實。 參考:《河北大學(xué)》2017年碩士論文
【摘要】:連續(xù)與智能壓實控制技術(shù)是壓路機具與填筑體相互作用的一種質(zhì)量監(jiān)管裝置,它由量測系統(tǒng)、振動壓路機以及被壓對象組成。結(jié)合衛(wèi)星定位系統(tǒng)厘米級定位可以對接下來的施工路段進行壓實度的控制,摸索可控參數(shù)對壓實度的影響,實時準確定位其位置的CMV值,對該點位的CMV值與灌砂法得到的壓實度值進行分析等。結(jié)合現(xiàn)場情況,不斷完善連續(xù)與智能壓實控制系統(tǒng),以便于研究分析,提高工程質(zhì)量,以及優(yōu)化遠程傳輸系統(tǒng)。為了研究智能壓實技術(shù)對填筑體路基壓實度,建立了以填筑體為離散體——“質(zhì)量塊~彈簧~阻尼”模型以及振動壓路機響應(yīng)信號處理模型——諧波比模型。以白洋淀大道作為試驗場地,對在三種土路基材料下,運用MGYS-Ⅲ連續(xù)壓實控制系統(tǒng)連續(xù)壓實進行研究分析。對智能壓實控制指標CMV與灌砂法得到的壓實度值進行相關(guān)分析與回歸分析。本文的主要研究內(nèi)容與結(jié)論如下:(1)通過對高含水率填料壓實度值、改變填料的均勻度與CMV連續(xù)圖譜進行對比,以及路基壓實薄弱對比反映了連續(xù)與智能壓實系統(tǒng)能較全面的反映路基的填料和壓實狀況。(2)MGYS-Ⅲ系統(tǒng)結(jié)合衛(wèi)星定位系統(tǒng)厘米級定位可以對接下來的施工路段進行壓實度的控制,壓實遍數(shù)的控制。(3)與常規(guī)檢測方法結(jié)合起來,可以使常規(guī)檢測的抽樣控制變?yōu)殛P(guān)鍵(薄弱)區(qū)域控制,大量減少常規(guī)檢測的數(shù)量,并且可以確認常規(guī)檢測不合格點所處的范圍。(4)無論是常規(guī)檢測還是連續(xù)檢測,都是對路基結(jié)構(gòu)抵抗變形能力的某種度量。連續(xù)檢測結(jié)果與常規(guī)檢測結(jié)果之間在統(tǒng)計學(xué)意義上具有正相關(guān)關(guān)系。(5)由點的抽樣檢測轉(zhuǎn)變?yōu)楦采w整個碾壓面的全面監(jiān)控與檢測,現(xiàn)場可視化顯示壓實結(jié)果。
[Abstract]:Continuous and intelligent compaction control technology is a kind of quality supervision device which interacts with compactor and filling body. It is composed of measuring system vibratory roller and pressed object. Combined with the centimeter positioning of satellite positioning system, the compaction degree of the following construction sections can be controlled, the influence of controllable parameters on the compaction degree can be explored, and the CMV value of its position can be accurately located in real time. The CMV value of this point and the compaction value obtained by sand pouring method are analyzed. The continuous and intelligent compaction control system is continuously improved in order to facilitate the research and analysis, improve the engineering quality and optimize the remote transmission system. In order to study the compaction degree of embankment with intelligent compaction technology, the model of "mass block ~ spring damping" and the response signal processing model-harmonic ratio model of vibratory roller are established. Taking Baiyangdian Avenue as the test site, the continuous compaction with MGYS- 鈪,
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