Lateral Pressure Calculation for Silos Considering Intermediate Principal Stress Effect(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年03期
- Page:
- 71-78
- Research Field:
- Publishing date:
Info
- Title:
- Lateral Pressure Calculation for Silos Considering Intermediate Principal Stress Effect
- Author(s):
- SUN Shan-shan; ZHAO Jun-hai; ZHANG Chang-guang
- School of Civil Engineering, Chang’an University
- Keywords:
- intermediate principal stress effect; silo; bunker; lateral pressure; true triaxial strength criterion; unified strength theory
- PACS:
- -
- DOI:
- -
- Abstract:
- Firstly, the expression of lateral pressure coefficient based on 4 kinds of true triaxial strength criterion (Drucker-Prager criterion, Matsuoka-Nakai criterion, Lade-Duncan criterion) and the unified strength theory considering intermediate principal stress effects under plane strain state were derived. The application conditions of the expressions were given respectively, and the lateral pressure coefficients were applied to determine lateral pressure of silo and bunker. The calculation results of lateral pressures were compared with the results from standards and the available tests. The results show that the strength criterion effects on lateral pressure calculation of silo and bunker are very significant. The stronger the intermediate principal stress effect is, the smaller the corresponding lateral pressure is. For silos, the European standard is the most conservative, and the calculation results of Chinese code are identical to those of unified strength theory (Mohr-Coulomb criterion) when parameter b=0. For bunkers, the modified Coulomb theory is the most conservative, and the calculation results of the Rankine theory are identical to those of the unified strength theory when parameter b=0. These four true triaxial strength criteria can reflect the intermediate principal stress effect to varying degrees. The unified strength theory is conservative when parameter b=0. The Drucker-Prager criterion is partial to danger. The Lade-Duncan criterion is in good agreement with the test data.
Last Update: 2018-05-31