软土中横向荷载小群CFG桩的试验与数值研究

IF 0.2 Q4 MULTIDISCIPLINARY SCIENCES Suranaree Journal of Science and Technology Pub Date : 2023-07-27 DOI:10.55766/sujst-2023-01-e01930
Nirav Kumar Umravia, Chandresh Solanki
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引用次数: 0

摘要

CFG桩由水泥、粉煤灰、碎石等复合材料组成,配以充足的水,达到不同的等级。它是提高软质问题土地基承载力的最佳技术之一。CFG桩具有良好的抗侧承载力。本研究的主要目的是在实验室中对单个和小组浇铸CFG桩进行研究。并对CFG桩在密闭区域、温度、养护过程中的安装工艺进行了探讨。为了提高CFG桩的可工作性,本试验分析中对不同组CFG桩进行了室内试验。它们由不同比例的水泥、粉煤灰和砾石组成。此外,研究还研究了9组桩组合(2×1, 2×2, 3×2, 2×3在正方形Paton中,当三个三角形桩平行并垂直于三角形底角承受侧向荷载时,在较长的方向上承受侧向荷载),桩间距值为1.5 D(其中D为桩径)。在荷载与横向位移、荷载与土阻力以及相关的双切向弯曲方法方面,讨论了荷载强度、群配置和桩的影响。改进后的图可用于横向填充CFG桩的规划和群作用设计方程。因此,开发了用于评估桩群活动的建筑曲线,并在实验中实施了改进。结果表明:CFG桩承受的侧向荷载和侧向位移均在允许范围内。讨论了CFG桩与桩周土体相互作用的对比结果。假设选取合适的土壤弹性模量。在这种情况下,数值解、解析解和反荷载-沉降曲线法可以根据数值结果与试验结果的关系,分别合理地估计出随深度变化的侧向变形和群效率。
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AN EXPERIMENTAL AND NUMERICAL STUDY OF LATERALLY LOADED SMALL GROUPS CFG PILE IN SOFT CLAY
The CFG pile comprises composite materials like cement, fly ash, and gravel with adequate water to achieve various grades. It is one of the best techniques to enhance ground bearing capacity in soft and problematic soil. CFG pile has a good amount of lateral resistance capacity. This research study’s main objective is to study a single and small group of casted CFG piles in the laboratory. Also, discussion on the Installation procedure of CFG pile in a confined area, temperature, and curing process. In order to improve the workability of the CFG pile, several laboratory experiments were conducted on various groups of CFG in this experimental analysis. They are made up of a variety of Cement, Fly ash, and gravel particle proportions. Moreover, the research looked at nine pile group combinations (2×1, 2×2, 3×2, 2×3 in square Paton, subjected to a lateral load in a longer direction when in three CFG piles triangular parallel and perpendicular to the base angle of triangular subjected to the lateral load) with a 1.5 D pile spacing values (where D is the pile diameter). In terms of load vs. lateral displacement, load vs. soil resistance, and associated double tangential curved method, the effects of load intensities, group configuration, and Pile are discussed. The improved plots can be used to plan laterally filled CFG piles and equations for group action design. As a result, architecture curves for assessing pile group activity using improvements were developed and implemented in experiments. Results show that the CFG pile was subjected to lateral load and lateral displacement within the permissible limit. The CFG Pile and Pile surrounding soil interaction comparative results were discussed. Suppose the suitable soil elastic modulus is selected. In that case, the numerical, analytical solution and the back load-settlement curve approach can reasonably estimate the lateral deformation concerning Depth and the group efficiency, respectively, according to the relation between numerical and experimental findings.
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来源期刊
Suranaree Journal of Science and Technology
Suranaree Journal of Science and Technology MULTIDISCIPLINARY SCIENCES-
CiteScore
0.30
自引率
50.00%
发文量
0
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