In-situ loading tests using the large-sized concrete block for weathered granite

2020 ◽  
pp. 191-198
Author(s):  
Ryunoshin Yoshinaka ◽  
Takeo Endo ◽  
Naoshige Nomura ◽  
Kazuhiko Yamagishi
Keyword(s):  
Concrete Block ◽  
Weathered Granite ◽  
Loading Tests

scholarly journals Development of shear band and particle crushing observed in in-situ loading tests on a sedimented sand.

1994 ◽  
pp. 207-216
Author(s):  
Masatoshi Ohuchi ◽  
Osamu Kusakabe ◽  
Toshiyuki Hagiwara ◽  
Shintaro Abe
Keyword(s):  
Shear Band ◽  
Particle Crushing ◽  
Loading Tests

scholarly journals In Situ Testing of Square Footing Resting on Geobelt-Reinforced Gravel Thin Cushion on Soft Silt

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Wei Zhang ◽  
David Du ◽  
Xiaohong Bai
Keyword(s):  
Pressure Distribution ◽  
Width Ratio ◽  
Test Results ◽  
In Situ Testing ◽  
Square Footing ◽  
Stress Diffusion ◽  
Loading Tests ◽  
Vertical Spacing ◽  
Saddle Shape

A series of in situ static loading tests of square footing were carried out on the geobelt-reinforced gravel cushion on soft silt. The reinforced gravel cushion was thin with the depth-to-width ratio of 0.2. A parameters study was conducted by considering the number of geobelt layers, the depth of the first geobelt layer beneath the footing, the vertical spacing between two geobelt layers, the linear density of reinforcement, and the material type of geobelt. The pressure distribution on bottom of the cushion was measured. The test results showed that the bearing capacity of reinforced gravel cushion was significantly larger than that of unreinforced gravel cushion, and the stress diffusion effect of reinforced gravel cushion was also more pronounced than that of the unreinforced cushion. The pressure distribution on bottom of reinforced gravel cushion was in a saddle shape. According to calculation and analysis, the stress diffusion angles of reinforced cushions were all larger than 20°.

The Linhuaigang Main Dam Openings Vertical Interlocking Block Revetment Design and Calculation

2012 ◽  
Vol 212-213 ◽  
pp. 846-852
Author(s):  
Zhong Yang ◽  
Gui Sheng Wang
Keyword(s):  
Flood Control ◽  
Ground Deformation ◽  
Concrete Block ◽  
Earth Dam ◽  
High Wind ◽  
The Earth ◽  
Water Conservancy ◽  
Large Water ◽  
First Time

The design “non-rope opening vertical interlock block” is used in the main dam of Linhuaigang Project for the first time in China. The opening of the block can effectively reduce the uplift pressure induced by waves. The vertical interlock can make block interlock three- dimensionally so as to enhance the integrity of the block and improve the anti-wave performance. The design can not only improve the protection of the main dam slope under long blowing distance and high wind and waves, but also save the use of stone and construction investment as well as protect the environment. Openings vertical interlock concrete block between the rigid in-situ concrete slope and the flexible dry stone slope, not only avoid the shortcomings of in-situ concrete slope suited to soft ground deformation, but also resist the larger storms owing to the better integrity than dry stone pitching ,from the interlocked effect between the blocks. Compared with the entity block, opening vertical interlock block thickness is reduced greatly. The earth dam project of Lin Huai Gang flood control project applied openings vertical interlock block successfully in water conservancy projects .The project has the pioneering position in the use in the wave elements of reservoirs, lakes and the other large water conservancy revetment constructions.

Structural Behavior of Cast In Situ Concrete Block Pavement

2005 ◽  
Vol 131 (9) ◽  
pp. 662-668 ◽  
Author(s):  
Teiborlang L. Ryntathiang ◽  
M. Mazumdar ◽  
B. B. Pandey
Keyword(s):  
Concrete Block ◽  
Structural Behavior

In Situ Assessment Method of Wood Using Normalized Withdrawal Resistances of Metric-Screw Type Probes

2013 ◽  
Vol 778 ◽  
pp. 217-224 ◽  
Author(s):  
Nobuyoshi Yamaguchi
Keyword(s):  
Shear Strength ◽  
Cross Section ◽  
Assessment Method ◽  
Strength Distribution ◽  
Shear Loading ◽  
Resistance Measurement ◽  
Strength Based ◽  
In Situ Assessment ◽  
Loading Tests

Withdrawal resistances of wood have been applied for in situ assessment of wood in existing timber structures. The author had proposed method to estimate shear strengths of wood from measured withdrawal resistances of probes which are screwed into wood. In order to verify the accuracy of these estimated shear strengths by proposed methods, withdrawal resistance measurements and shear loading tests were conducted for wood. Single withdrawal resistance measurement was applied for wood specimens, and estimated shear strengths from withdrawal measurements were compared to the measured shear strengths by shear loading tests of wood. Correlation between the estimated shear strengths and measured shear strengths of specimens was reasonably good (R2=0.73). Multiple coaxial withdrawal resistance measurement which can provide distribution of shear strengths in cross-section of wood was also proposed. The average of estimated shear strengths by single withdrawal resistances was 7 percent less than that of measured shear strengths. The average of estimated shear strength by multiple coaxial withdrawal resistances was 3 percent greater than that of measured shear strengths. The single withdrawal measurements and multiple coaxial withdrawal resistances are available to estimate shear strengths of wood and shear strength distribution in the cross-section of wood. Estimated shear strengths obtained from these methods will be valuable for strength based in situ assessment of wood.

scholarly journals Centrifuge modeling of in-situ loading tests using undisturbed scoria samples.

1992 ◽  
pp. 107-116 ◽  
Author(s):  
Osamu KUSAKABE ◽  
Toshiyuki HAGIWARA ◽  
Yoshito MAEDA ◽  
Masatoshi OHUCHI
Keyword(s):  
Centrifuge Modeling ◽  
Loading Tests
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