浅谈软土段路基施工技术

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1、浅谈软土段路基施工技术王施雁浙江交通职业技术学院路桥学院081401班08140103摘要：软土段路基的施工是公路建设中的一项重要工作。目前，软土路基的施工无论在设计方面、还是在施工方面都存在一些不足。本文结从软土路基的施工、处理方法及排水等方面进行分析，对软土路基的施工技术提出了较好的对策，以提高软土路基施工质量。关键词：软土段路基施工过程软基处理排水目录1.前言··················································12.软土段路基施工步骤·················

2、·····················12.1施工准备························································12.2土方开挖及挖除非适用性材料······································22.2.1施工测量································································22.2.2开挖及碾压······································

3、························22.2.3清除淤泥································································22.3地基填筑························································23软基处理方法···········································33.1砂砾垫层··········································

4、··············33.2预压与超载预压 ··················································43.3土工织物·························································43.4塑料排水板······················································53.5喷粉桩法···················································

5、·····5 3.5.粉喷法加固软土段路基的特点···············································5 3.5.2施工工艺·······························································64软土段路基排水工程·······································74.1路基排水步骤····················································74.2路基

6、排水工程施工主要技术要求····································75结束语参考文献致谢1前言我国公路行业规范对软土地基定义是指强度低,压缩量较高的软弱土层.多数含有一定的有机物质。软土的成因一般认为是地表水所形成的沉淀物质,由于地表往往有大量喜水植物,这些植物的生长和死亡,使软土中含有较多的有机物.软土段路基的处理应根据软土,淤泥的物理力学性质,埋层深度,路堤高度,材料场地情况,公路等级等因素分别采取砂砾垫层、预压与超压、土工材料、塑料排水板等措施进行处理。软土段路基处理的目的是提高公路路

7、基的稳定性和承载能力以提高施工质量。由于沿海地区大部分软土段路基需要进行技术施工，而这个课题也能很好的反应一般软土段路基的施工概况，就拟定浅谈软土段路基施工技术作为论文题目。这里主要探讨软土段路基施工步骤和施工方法以及路基排水工程的一些问题。2软土段路基施工步骤2.1施工准备1、恢复路基中线，放出各设计断面边桩，并校核路基设计工程量。2、认真进行调查研究，全面搜集沿线地质、水文、地形、地貌、气象等资料，进行路基施工组织设计。3、根据挖、填方各路线的工程地质情况，选择各种切实可行的施工方法。4、严格按照技术规范和设计要求组

8、织施工，确保路基宽度、高度、分层厚度，平整度、压实度、边坡坡度等符合设计要求。5、对软基路段，沿池塘路段需先排水疏干、清除淤泥质土，回填素土为2.5米，再进行塑排板施工，然后回填碎石含量较高的宕渣，素土回填压实度为90%。对于不作软基处理路段，直接用宕渣回填。6、施工过程中，要按规定进行质量检查，并请监理工程师签认工