加筋砂土上偏心倾斜加载矩形基础的特性

IF 0.7 Q4 MECHANICS
Sujata Gupta, Anupam Mital
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引用次数: 1

摘要

摘要本研究介绍了在不同荷载条件下,无筋和加筋砂床上的模型基脚的试验性能。本研究中研究的参数包括加强层的数量(N=0、1、2、3、4)、埋置比(Df/B=0、0.5、1.0)、偏心和倾斜比(e/L、e/B=0、0.05、0.10、0.15)和(a=0°、7°、14°)。试验砂采用双轴土工格栅(Bx20/20)进行加固。试验结果表明,极限承载力随轴向偏心率和外加荷载的倾斜度而降低。试验结果还表明,模型基脚的深度从零增加到B(B=模型基脚的宽度),极限承载力(UBC)的增加约为93%。类似地,多层土工格栅加筋砂(N=0至4)使UBC增加约75%。模型基脚的承载力比(BCR)随着基脚核心边界荷载偏心率的增加而增加;如果负载偏心度增加了连续性,BCR就会降低。模型基脚的倾斜度随着偏心率的增加而增加,随着加强层数量的增加而减小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Behaviour of eccentrically inclined loaded rectangular foundation on reinforced sand
Abstract This study presents the behaviour of model footing resting over unreinforced and reinforced sand bed under different loading conditions carried out experimentally. The parameters investigated in this study includes the number of reinforced layers (N = 0, 1, 2, 3, 4), embedment ratio (Df/B = 0, 0.5, 1.0), eccentric and inclined ratio (e/L, e/B = 0, 0.05, 0.10, 0.15) and (a = 0°, 7°, 14°). The test sand was reinforced with bi-axial geogrid (Bx20/20). The test results show that the ultimate bearing capacities decrease with axial eccentricity and inclination of applied loads. The test results also show that the depth of model footing increase zero to B (B = width of model footing), an increase of ultimate bearing capacity (UBC) approximated at 93%. Similarly, the multi-layered geogrid reinforced sand (N = 0 to 4) increases the UBC by about 75%. The bearing capacity ratio (BCR) of the model footing increases with an increasing load eccentricity to the core boundary of footing; if the load eccentricities increase continuity, the BCR decreases. The tilt of the model footing is increased by increasing the eccentricity and decreases with increasing the number of reinforcing layers.
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来源期刊
CiteScore
1.30
自引率
16.70%
发文量
20
审稿时长
16 weeks
期刊介绍: An international journal ‘Studia Geotechnica et Mechanica’ covers new developments in the broad areas of geomechanics as well as structural mechanics. The journal welcomes contributions dealing with original theoretical, numerical as well as experimental work. The following topics are of special interest: Constitutive relations for geomaterials (soils, rocks, concrete, etc.) Modeling of mechanical behaviour of heterogeneous materials at different scales Analysis of coupled thermo-hydro-chemo-mechanical problems Modeling of instabilities and localized deformation Experimental investigations of material properties at different scales Numerical algorithms: formulation and performance Application of numerical techniques to analysis of problems involving foundations, underground structures, slopes and embankment Risk and reliability analysis Analysis of concrete and masonry structures Modeling of case histories
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