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首页> 外文会议>Soil mechanics and geotechnical engineering: Challenges and solutions >Application of the heavy tamping method on Sri Lankan peaty clay for the construction of a highway embankment
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Application of the heavy tamping method on Sri Lankan peaty clay for the construction of a highway embankment

机译：夯实法在斯里兰卡粉煤灰黏土在公路路堤施工中的应用。

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摘要

An application of heavy tamping method has been used in improving the peaty ground for arnhighway construction project in Sri Lanka. The foundation soil mainly consisted of a 4 m – 5 m thick peatrnlayer with high compressibility and low shear strength. The heavy tamping operation has been designed to enforcernthe anticipated settlement by the construction of a highway embankment on soft ground. The volume ofrncompressed soil compacted during this operation is directly related to enforced settlement within the base arearnof the operation. Strong type band drains were installed in the peaty clay before starting the heavy tamping inrnorder to prevent high excess pore water pressure development in the underneath soil due to the applied energy.rnThe performance of the heavy tamping method has been evaluated by comparing the subsoil profile, field testrnresults and laboratory test results and physical and mechanical properties of soft soil before and after the improvement.rnThe investigation results indicate that the adopted heavy tamping technique is an effective way forrnimproving a soft ground which comprises of peaty clay of shallow thickness in highway construction.
机译：重型夯实方法的一种应用已用于改善斯里兰卡阿恩高速公路建设项目的地面。基础土壤主要由厚度为4 m – 5 m的泥炭层组成，具有较高的可压缩性和较低的剪切强度。重型夯实操作旨在通过在软土地上建造高速公路路堤来实施预期的沉降。在该操作过程中压实的压缩土壤的体积与操作基础区域内的强制沉降直接相关。在开始重夯实之前，将强型带状排水装置安装在粉煤灰中，以防止由于施加的能量而在地下土壤中产生过多的孔隙水压力。rn通过比较地下土的轮廓，评估了重夯实方法的性能，田间试验结果和实验室测试结果以及软土地基改良前后的物理力学性能。研究结果表明，采用重夯实技术是在公路建设中改良由浅层粉质粘土组成的软土地基的有效途径。

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