土工格室结构层抗变形性能模型试验  

Model Test on Anti-deformation of Geocell Structural Layer

作　　者：杨晓华[1] 林法力[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《长安大学学报（自然科学版）》2006年第3期1-4,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：国家西部交通建设科技项目(200131881259)

摘　　要：采用土工格室加筋松软地基,能有效提高地基的强度和刚度,减少地基沉降变形,这在许多实际工程中已得到验证。但对土工格室结构层本身的变形性状,尚缺乏深入系统的研究。利用自制的试验装置,通过静力载荷试验,对土工格室结构层抗变形性能进行了研究,并对土工格室规格、填料类型和压实度3种影响因素进行了对比分析。试验结果表明:土工格室加固的黄土和粗砂结构层的抗变形能力明显得到提高;填料为粗砂时,土工格室结构层的变形模量平均提高了3.25倍,填料为黄土时,提高了1.73倍;土工格室焊距对土工格室结构层抗变形性状无显著的影响,而对土工格室压实度和土工格室填料影响较大。It is efficient to improve subgrage＇ s intensity and rigidity, and to diminish the deformation of the subgrade＇s settlement by using geocell to reinforce the soft subgrade. But the deformation feature of the geocell structure layer itself has not been studied intensively and systematicly yet. Through the static load test, the anti-deformation of geocell structural layer is researched, and three impaction factors including geocell specifications, filling types and degree of compaction are contrasted and analyzed. The result shows that the anti-deformation of loess and coarse sand reinforced by geocell can be improved obviously, its deformation modulus with coarse filler increases 3.25 times, and increases 1.73 times with the loess filler. The deformation behavior is influenced less by weld space, more by the filler types and degree of compaction. 6 tabs, 3 figs,13 refs.

关 键 词：道路工程 土工格室 结构层 模型 静力载荷试验 抗变形性能 

分 类 号：U416.1[交通运输工程—道路与铁道工程]