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題名 | 低垂直應力下地工格網於夯實紅土之拉拔行為=Pull-Out Behaviors of Geogrid Buried in Compacted Lateritic Soil under Low Vertical Stresses |
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作者姓名(中文) | 林三賢; 廖振程; 劉建良; 陳明智; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 9:4 1997.12[民86.12] |
頁次 | 頁539-547 |
分類號 | 441.12 |
關鍵詞 | 地工格網; 夯實紅土; 承載阻力; 摩擦阻力; Geogrid; Compacted lateritic soil; Bearing resistance; Frictional resistance; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要以大型拉拔試驗探討地工格網採用夯實紅土為背填材料之抗拉拔承載力。試驗結果顯示格網縱向桿件之摩擦阻力只佔總拉拔阻力的4.5%∼9.5%。然於正應力10kPa時,承載阻力高於一般承載破壞之上限值,但總拉拔阻力則仍位於上下限之間,因此需更多實驗結果以了解於低垂直應力時之抗拉拔強度。此外,試驗結果亦發現格網結點位移量隨垂直應力之增加而逐漸向中後段增加。本研究亦利用理論解預測拉拔力與位移量之關係,預測結果與實驗值有良好的一致性。 |
英文摘要 | The main purpose of this study is to investigate the pullout strength of geogrid embedded in lateritic soils using a large scale pullout testing machine. The test results show the frictional resistance of geogrid's longitudinal members contributed 4.5% to 9.5% of the total pullout strength only. The comparison of the test results with the available theories shows that the tested pullout resistance under 10 kPa vertical stresses is higher than that of the upper bound theoretical solution. More tests are needed to understand the pullout resistance at low vertical stresses such as 10 kPa. Furthermore, test results also show that the nodal displacements increase away from the wall front along with the increasing of the vertical stresses. In addition to experimental work, an analytical model is used to simulate the relationship between the total pullout strength and displacement. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。