Intelligent back analysis of constitutive parameters for soil slope based on unified strength theory

2011 ◽  
pp. 941-945
Author(s):  
J Li ◽  
Y Gao ◽  
Y Li ◽  
B Cui ◽  
Z Deng
Keyword(s):  
Back Analysis ◽  
Soil Slope ◽  
Strength Theory ◽  
Unified Strength Theory ◽  
Constitutive Parameters

CALCULATION OF THE ULTIMATE BEARING CAPACITY OF SOIL SLOPE BASED ON THE UNIFIED STRENGTH THEORY

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5637-5642 ◽  
Author(s):  
HONGJIAN LIAO ◽  
ZONGYUAN MA ◽  
LIJUN SU
Keyword(s):  
Bearing Capacity ◽  
Failure Criteria ◽  
Soil Mass ◽  
Ultimate Bearing Capacity ◽  
Intermediate Principal Stress ◽  
Soil Slope ◽  
Strength Theory ◽  
Unified Strength Theory ◽  
Potential Strength ◽  
Coulomb Criterion

At present, the failure criteria used in calculating the ultimate bearing capacity of soil slope are the Tresca and Mohr-Coulomb criteria. But the results are conservative and the potential strength of soil mass cannot be utilized sufficiently because these two criteria do not take into account the effect of the intermediate principal stress. In this paper the unified strength theory was used to analyze the ultimate bearing capacity of soil slope. The formula for calculating the ultimate bearing capacity of soil slope using the unified strength theory was established. At the end, a case history was analyzed and it indicated that the result of the unified strength theory is larger than that of the Mohr-Coulomb criterion. This indicates that calculation of ultimate bearing capacity of soil slope with the unified strength theory can sufficiently exploit the strength of material. Therefore, the calculation of ultimate bearing capacity of the soil slope based on the unified strength theory will be of great significance in future applications.

scholarly journals Through-wall yield collapse pressure of casing based on unified strength theory

2016 ◽  
Vol 43 (3) ◽  
pp. 506-513 ◽  
Author(s):  
Yuanhua LIN ◽  
Kuanhai DENG ◽  
Yongxing SUN ◽  
Dezhi ZENG ◽  
Tianguo XIA
Keyword(s):  
Strength Theory ◽  
Unified Strength Theory ◽  
Collapse Pressure

scholarly journals Strength without Size Effect and Formula of Strength for Concrete and Natural Marble

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2685
Author(s):  
Guangchun Zhou ◽  
Jun Shi ◽  
Maohong Yu ◽  
Yu Zhang ◽  
Xiaochun Li ◽  
...  
Keyword(s):  
Size Effect ◽  
State Theory ◽  
Material Strength ◽  
Specific Load ◽  
Strength Theory ◽  
Principal Stresses ◽  
Unified Strength Theory ◽  
Uniaxial Load ◽  
Practical Engineering ◽  
History Of

Throughout the several-hundred-year-long history of the concept of strength, inaccurate material strength as a result of the size effect and the inconsistency of strength theories have been two continuous and challenging issues, and have even been taken to be inherent attributes of material strength. Applying the structural stressing state theory and method, this study experimentally investigates the uniaxial load-bearing process of concrete specimens and reveals their stressing state mutation features at specific load levels. Exploration of this general feature resulted in the discovery of essential strength, which is basically without size effect. Then, biaxial and triaxial experiments with concrete specimens were conducted in order to obtain the results for various combinations of principal stresses on essential strength. Consequently, according to Yu’s unified strength theory, the formula for strength of concrete was determined by fitting the relation between the combined principal stresses and the essential strength, which was verified by experiments carried out using natural marble specimens. Essential strength could promote the accuracy of strength indices, and the formula for strength might replace the existing strength theories for brittle materials. The initial solution of these two classic issues could make a new contribution to Yu’s unified strength theory and its final goal, promoting related research on material strength and leading to a more rational use of material strength in practical engineering.

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