Laboratory Model Test of Fully Buried Portal Frame-Shaped Slope-Stabilizing Piles

2022 ◽  
Vol 45 (2) ◽  
pp. 20210031
Author(s):  
Zihang Dai ◽  
Zhihua Qiu ◽  
Hengyang Li ◽  
Caijin Lu ◽  
Jianhui Yang
Keyword(s):  
Model Test ◽  
Laboratory Model ◽  
Stabilizing Piles ◽  
Portal Frame ◽  
Laboratory Model Test

Laboratory Model Test of EPB Shield Tunneling in a Cobble-Rich Soil

2020 ◽  
Vol 146 (10) ◽  
pp. 04020112 ◽  
Author(s):  
Xiongyu Hu ◽  
Chuan He ◽  
Gabriel Walton ◽  
Yong Fang ◽  
Guanghui Dai
Keyword(s):  
Model Test ◽  
Laboratory Model ◽  
Shield Tunneling ◽  
Laboratory Model Test ◽  
Epb Shield

Ultimate bearing capacity of shallow foundations on sand with geogrid reinforcement

1993 ◽  
Vol 30 (3) ◽  
pp. 545-549 ◽  
Author(s):  
M.T. Omar ◽  
B.M. Das ◽  
V.K. Puri ◽  
S.C. Yen
Keyword(s):  
Bearing Capacity ◽  
Key Words ◽  
Model Test ◽  
Ultimate Bearing Capacity ◽  
Shallow Foundations ◽  
Shallow Foundation ◽  
Laboratory Model ◽  
Critical Depth ◽  
Test Results ◽  
Laboratory Model Test

Laboratory model test results for the ultimate bearing capacity of strip and square foundations supported by sand reinforced with geogrid layers have been presented. Based on the model test results, the critical depth of reinforcement and the dimensions of the geogrid layers for mobilizing the maximum bearing-capacity ratio have been determined and compared. Key words : bearing capacity, geogrid, model test, reinforced sand, shallow foundation.

Frost Heave and Thawing Settlement of Frozen Soils around Concrete Piles: A Laboratory Model Test

2019 ◽  
Vol 49 (2) ◽  
pp. 20180764
Author(s):  
Liyun Tang ◽  
Xiaogang Wang ◽  
Long Jin ◽  
Lijun Deng ◽  
Di Wu
Keyword(s):  
Model Test ◽  
Frost Heave ◽  
Laboratory Model ◽  
Frozen Soils ◽  
Concrete Piles ◽  
Laboratory Model Test

Laboratory Model Test Study of Tunnel Anchor

2014 ◽  
Vol 1065-1069 ◽  
pp. 333-336
Author(s):  
Bing Shen ◽  
Sai Qiong Long ◽  
Jun Chen ◽  
Yong Bing Li
Keyword(s):  
Model Test ◽  
Shear Failure ◽  
Failure Surface ◽  
Tensile Failure ◽  
Laboratory Model ◽  
Pull Out ◽  
Test Study ◽  
Cable Force ◽  
Anchor Design ◽  
Laboratory Model Test

A laboratory model test of tunnel anchor was conducted to investigate its pullout mechanism and bearing capacity. Surface and rock deformation, strain and stress were measured during the entire model test process. The results show that: under pull out load, tensile failure first occurs in top surface rock near the anchor, then shear failure occurs in anchor-rock interface and rock around the anchor. The failure surface is inverted cone from the anchor bottom. Under 50 times design cable force tunnel rock is in elastic stage, suggesting that current tunnel anchor design is quite conservative and can be further optimized.

Performance of embankments with and without reinforcement on soft subsoil

2002 ◽  
Vol 39 (4) ◽  
pp. 838-848 ◽  
Author(s):  
Jin-Chun Chai ◽  
Norihiko Miura ◽  
Shui-Long Shen
Keyword(s):  
Model Test ◽  
Case History ◽  
Laboratory Tests ◽  
Lateral Displacement ◽  
Excess Pore Pressure ◽  
Laboratory Model ◽  
Ground Field ◽  
Obvious Effect ◽  
Laboratory Model Test ◽  
Soft Subsoil

A case history of both reinforced and unreinforced embankments on soft subsoil built-to-failure is described and analyzed. The effect of geotextile reinforcements on embankment behavior is discussed by comparing the field and numerical analysis results of cases with and without reinforcement. The results of a laboratory model test on the behavior of embankments on soft subsoil are discussed. Both field and laboratory tests, as well as analysis results, indicate that the reinforcement had a positive effect on embankment stability. However, at a working state (for a factor of safety of FS = 1.2~1.3) the reinforcement did not have an obvious effect on the subsoil response. The effect of reinforcement on subsoil deformation could be noticed only when the unreinforced embankment was close to failure. The laboratory model test results indicated that if the reinforcement is stiff and strong enough, the effect of reinforcement is considerable. It is suggested that although the geotextile has a beneficial effect on embankment over soft subsoil due to its relative lower stiffness, to achieve a substantial improvement on embankment behavior, the stiffer and stronger reinforcements should be used. This case history also demonstrated that the rate of lateral displacement and excess pore pressure development are sensitive indicators of the stability of embankment on soft subsoil.Key words: embankment, reinforcement, soft ground, field tests, laboratory tests, FEM analysis.

Model Test Research on Moisture Control of Saturated Over-Wet Soil

2011 ◽  
Vol 243-249 ◽  
pp. 3021-3028
Author(s):  
Hua Wen ◽  
Ru Heng Wang ◽  
Yong Yao ◽  
Yue Ming Wang
Keyword(s):  
Spatial Variation ◽  
Water Content ◽  
Model Test ◽  
Laboratory Model ◽  
Moisture Control ◽  
Loading Method ◽  
Electro Osmosis ◽  
Laboratory Model Test

Based on laboratory model test, this paper presents the draining efficiency of vacuum pre-loading method and electro-osmosis method with over-wet soil in moist and rainy areas. The results show that: both methods can effectively reduce the water content of saturated over-wet soil in Ya’an area, to achieve the desired effect of drainage and consolidation; and the degree of the effects of both methods differ with spatial variation.

scholarly journals Laboratory Model Test on Moisture-Heat and Deformation Behaviour of Red Clay Slope under Action of Rainfall and Sunlight

2021 ◽  
Vol 719 (4) ◽  
pp. 042051
Author(s):  
Ming Chen ◽  
Jian Liu ◽  
Zhengyong Xie ◽  
Xunjian Hu ◽  
Bingyang Li ◽  
...  
Keyword(s):  
Model Test ◽  
Deformation Behaviour ◽  
Laboratory Model ◽  
Red Clay ◽  
Laboratory Model Test
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