滨海地区吹填海砂路用性能及其应用研究

发布时间：2018-09-10 12:45

【摘要】：滨海地区依靠其天然的地理资源，渔业、旅游业得到了迅速发展，然而公路建设问题也日益显现：土源供给不足、土源性质较差。近年来，国家制定了关于可持续发展、节约土地资源的战略思想，各级建设单位积极响应，开始寻求“就地取材、变废为宝”的建设思路，，提出将滨海地区特有的海砂土作为路基填料进行公路建设的方案。该方案技术先进、经济节约、保护环境，能够创造极佳的社会效益和经济效益。针对以上要求，本文主要研究吹填海砂土路基填筑的适用性及其应用，并指导依托工程的施工。通过室内试验和现场试验，以及理论分析相结合的方法深入研究了吹填海砂土的工程性质。具体而言主要进行了以下研究：（1）通过室内试验研究滨海地区吹填海砂土颗粒级配情况、液塑限指标、含盐量等物理力学特性。（2）通过击实试验和CBR试验对滨海地区吹填海砂土的路用性能进行评价。（3）通过室内不固结不排水三轴试验对滨海地区吹填海砂土的固化性能进行研究。（4）通过现场试验对滨海地区吹填海砂土的路用性能、盐渍化程度、碾压方案、压实性能进行研究。（5）分别通过理论验算和现场试验对滨海地区吹填海砂土路基边坡稳定性进行研究。
[Abstract]:Coastal areas rely on their natural geographical resources, fisheries, tourism has been rapid development, but highway construction problems are increasingly apparent: inadequate supply of soil, soil-derived poor quality. Based on the idea of turning waste into treasure, this paper puts forward a scheme of highway construction by using special sea sand in coastal area as roadbed filler.
In view of the above requirements, this paper mainly studies the applicability and application of dredged reclamation sand subgrade filling, and directs the construction relying on the project.
(1) The physical and mechanical properties of dredged reclamation sand in coastal area, such as particle size distribution, liquid-plastic limit index and salt content, were studied by laboratory tests.
(2) evaluate the road performance of the reclamation area by means of compaction test and CBR test.
(3) The solidification behavior of dredged reclamation sand in coastal area was studied by indoor unconsolidated undrained triaxial test.
(4) The pavement performance, salinization degree, rolling scheme and compacting performance of dredged reclamation sand in coastal area are studied by field test.
(5) The slope stability of dredged reclamation sand subgrade in coastal area is studied by theoretical calculation and field test respectively.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1;U414

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