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1、淺談軟土段路基施工技術(shù)王施雁浙江交通職業(yè)技術(shù)學(xué)院路橋?qū)W院081401班08140103摘要：軟土段路基的施工是公路建設(shè)中的一項(xiàng)重要工作。目前，軟土路基的施工無(wú)論在設(shè)計(jì)方面、還是在施工方面都存在一些不足。本文結(jié)從軟土路基的施工、處理方法及排水等方面進(jìn)行分析，對(duì)軟土路基的施工技術(shù)提出了較好的對(duì)策，以提高軟土路基施工質(zhì)量。關(guān)鍵詞：軟土段路基施工過(guò)程軟基處理排水目錄1.前言··················································12.軟土段路基施工步驟·················
2、·····················12.1施工準(zhǔn)備························································12.2土方開(kāi)挖及挖除非適用性材料······································22.2.1施工測(cè)量································································22.2.2開(kāi)挖及碾壓······································
3、························22.2.3清除淤泥································································22.3地基填筑························································23軟基處理方法···········································33.1砂礫墊層··········································
4、··············33.2預(yù)壓與超載預(yù)壓?··················································43.3土工織物·························································43.4塑料排水板······················································53.5噴粉樁法···················································
5、·····5?3.5.粉噴法加固軟土段路基的特點(diǎn)···············································5?3.5.2施工工藝·······························································64軟土段路基排水工程·······································74.1路基排水步驟····················································74.2路基
6、排水工程施工主要技術(shù)要求····································75結(jié)束語(yǔ)參考文獻(xiàn)致謝1前言我國(guó)公路行業(yè)規(guī)范對(duì)軟土地基定義是指強(qiáng)度低,壓縮量較高的軟弱土層.多數(shù)含有一定的有機(jī)物質(zhì)。軟土的成因一般認(rèn)為是地表水所形成的沉淀物質(zhì),由于地表往往有大量喜水植物,這些植物的生長(zhǎng)和死亡,使軟土中含有較多的有機(jī)物.軟土段路基的處理應(yīng)根據(jù)軟土,淤泥的物理力學(xué)性質(zhì),埋層深度,路堤高度,材料場(chǎng)地情況,公路等級(jí)等因素分別采取砂礫墊層、預(yù)壓與超壓、土工材料、塑料排水板等措施進(jìn)行處理。軟土段路基處理的目的是提高公路路
7、基的穩(wěn)定性和承載能力以提高施工質(zhì)量。由于沿海地區(qū)大部分軟土段路基需要進(jìn)行技術(shù)施工，而這個(gè)課題也能很好的反應(yīng)一般軟土段路基的施工概況，就擬定淺談軟土段路基施工技術(shù)作為論文題目。這里主要探討軟土段路基施工步驟和施工方法以及路基排水工程的一些問(wèn)題。2軟土段路基施工步驟2.1施工準(zhǔn)備1、恢復(fù)路基中線，放出各設(shè)計(jì)斷面邊樁，并校核路基設(shè)計(jì)工程量。2、認(rèn)真進(jìn)行調(diào)查研究，全面搜集沿線地質(zhì)、水文、地形、地貌、氣象等資料，進(jìn)行路基施工組織設(shè)計(jì)。3、根據(jù)挖、填方各路線的工程地質(zhì)情況，選擇各種切實(shí)可行的施工方法。4、嚴(yán)格按照技術(shù)規(guī)范和設(shè)計(jì)要求組
8、織施工，確保路基寬度、高度、分層厚度，平整度、壓實(shí)度、邊坡坡度等符合設(shè)計(jì)要求。5、對(duì)軟基路段，沿池塘路段需先排水疏干、清除淤泥質(zhì)土，回填素土為2.5米，再進(jìn)行塑排板施工，然后回填碎石含量較高的宕渣，素土回填壓實(shí)度為90%。對(duì)于不作軟基處理路段，直接用宕渣回填。6、施工過(guò)程中，要按規(guī)定進(jìn)行質(zhì)量檢查，并請(qǐng)監(jiān)理工程師簽認(rèn)工
