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首页> 外文期刊>Journal of natural fibers >Experimental Investigation of Load Settlement Behavior of Coir Mat and Coir Fiber Reinforced Sand
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Experimental Investigation of Load Settlement Behavior of Coir Mat and Coir Fiber Reinforced Sand

机译：椰壳垫和椰纤维增强砂的载荷沉降特性试验研究

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摘要

An experimental study in terms of model footing test were performed to comparatively assess the effect of form of reinforcement, viz., mat and fiber, on the load intensity response of reinforced sand. Coir reinforcement was used in this present investigation to assess comparative performance of coir mat and coir fiber reinforced sand, as it is highly durable among all other natural materials. Model footing test were conducted by placing coir mat and coir fiber at different u/B ratios. Load deformation behavior was compared with the help of peak strain, bearing capacity ratio and settlement reduction factor. The experimental and calculated theoretical values of peak stress of coir mat reinforced sand were compared and found that both the values were in good agreement with predicted values. The results of the present experimental investigation indicated that the form of reinforcement viz., mat/grid and fibers has significant influence on load deformation behavior of reinforced sand. Coir mat when located within the failure zone intercepting the shear zone below the loaded footing is most beneficial in terms of load carrying capacity of reinforced sand, in consistent with earlier investigations. However maximum increase in bearing capacity of coir fiber reinforced sand does indicate an optimum u/B ratio of 1.0. Maximum SRF for coirmat reinforced sand corresponds to u/B = 0.6 where for coir fiber reinforced sand it corresponds to u/B = 1.0.
机译：进行了基于模型基础测试的实验研究，以比较评估增强形式，即垫子和纤维对增强型沙子的荷载强度响应的影响。在本次调查中，使用椰壳纤维增强材料来评估椰壳纤维垫和椰壳纤维增强沙子的比较性能，因为它在所有其他天然材料中具有很高的耐久性。通过以不同的u / B比放置椰棕垫和椰壳纤维进行模型基础测试。在峰值应变，承载力比和沉降减少因子的帮助下比较了载荷变形行为。对椰壳纤维增强砂的峰值应力的实验和计算理论值进行了比较，发现这两个值与预测值非常吻合。目前的实验研究结果表明，增强形式即垫子/网格和纤维形式对增强砂的载荷变形行为具有重要影响。与早期的研究一致，当垫层位于破坏区域内并与加载脚下的剪切区域相交时，则最有利于增强砂的承载能力。但是，椰壳纤维增强砂承载力的最大增加确实表明最佳u / B比为1.0。椰壳纤维增强砂的最大SRF对应于u / B = 0.6，椰壳纤维增强砂的最大SRF对应于u / B = 1.0。

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