- Effect Evaluation of Freeze-Thaw on Deformation-Strength Properties of Granular Base Course Material in Pavement
- T. Ono ; T. Tokoro ; S. Kameyama ; S. Kawabata ; Y. Zhang ; T. Ishikawa
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Pavement
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- Constitutive model and simulation of non-segregation freezing and thawing in soils
- R.L. Michalowski ; Y. Zhang
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Constitutive Modeling / Soil Behavior ; Ground Freezing
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- Load Tests on Full-Scale Bored Pile Groups
- W. Gong ; G. Dai ; R. Salgado ; Y. Zhang
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
- Pile Foundations
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- Seismic Reliability Assessment of a Bridge Ground System
- Zhaohui Yang ; Ahmed Elgamal ; Y. Zhang ; G. Acero ; J. Conte
- 13th World Conference on Earthquake Engineering, Vancouver, B.C., Canada, Paper No. 2978.
- Year: 2004
- Soil Dynamics ; Geotechnical Earthquake Engineering
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- Treatment of Seismic Input and Boundary Conditions in Nonlinear Seismic Analysis of a Bridge Ground System
- J. Bielak ; J. Conte ; Ahmed Elgamal ; Zhaohui Yang ; Y. Zhang
- Year: 2003
- Soil Dynamics ; Geotechnical Earthquake Engineering
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- Nonlinear Seismic Response of a Bridge Site Subject to Spatially Varying Ground Motion
- Zhaohui Yang ; L. He ; J. Bielak ; Y. Zhang ; Ahmed Elgamal ; J. Conte
- 16th ASCE Engineering Mechanics Conference, University of Washington, Seattle.
- Year: 2003
- Soil Dynamics ; Geotechnical Earthquake Engineering
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- Dam foundation excavation techniques in China: A review
- Y. Zhang ; W. Lu ; M. Chen ; Y Hu
- Year: 0000 , Volume: 5
- Dam Engineering
- Keywords: dam foundation ; excavations ; rapid construction
- Description
- A protective layer (PL) is commonly reserved above foundation surface to protect the underlying rock mass during dam foundation excavation. In China, the PL of dam foundation is conventionally subdivided into two or three thin layers and excavated with the shallow-hole blasting method, even by pneumatic pick method in case of soft rock mass. The aforementioned layered excavation of the PL delays the construction of the whole project. After nearly 30-year practices, several safe and efficient methods for the PL excavation of dam foundation are gradually developed. They include shallow-hole bench blasting with cushion material (SBC) at the bottom of the hole, and horizontal smooth blasting (HSB). The PL is even cancelled on the condition that horizontal pre-split technique is employed during dam foundation excavation. This paper introduces the aforementioned two PL excavation methods (shallow-hole blasting and bench blasting) and horizontal pre-split technique of dam foundation without protective layer (HPP). The basic principles of blasting method, blasting geometry, charge structure, drill-and-blast parameters of typical projects are examined. Meanwhile, the merits and limitations of each method are compared. Engineering practices in China show that HSB is basically the optimal method for dam foundation PL excavation in terms of foundation damage control and rapid construction. Some new problems for dam foundation PL excavation arising, such as strong unloading and relaxation phenomenon that encountered in the gorge region of southwest China, are needed to be addressed; and the corresponding countermeasures are discussed as well.
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- Effect Evaluation of Freeze-Thaw on Deformation-Strength Properties of Granular Base Course Material in Pavement
- T. Ishikawa ; Y. Zhang ; S. Kawabata ; S. Kameyama ; T. Tokoro ; T. Ono
- International Conference on Soil Mechanics and Geotechnical Engineering - 18th International Conference on Soil Mechanics and Geotechnical Engineering (Paris)
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- Pavement ; Laboratory Testing
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- Constitutive model and simulation of non-segregation freezing and thawing in soils
- Y. Zhang ; R.L. Michalowski
- International Conference on Soil Mechanics and Geotechnical Engineering - 18th International Conference on Soil Mechanics and Geotechnical Engineering (Paris)
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- Ground Freezing ; Constitutive Modeling / Soil Behavior
PDF |
- Load Tests on Full-Scale Bored Pile Groups
- Y. Zhang ; R. Salgado ; G. Dai ; W. Gong
- International Conference on Soil Mechanics and Geotechnical Engineering - 18th International Conference on Soil Mechanics and Geotechnical Engineering (Paris)
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- Pile Foundations ; Site Characterization & In-situ Testing (General)
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- Numerical implementation of a stress-saturation model in unsaturated soils with fully coupled system equations
- Y. Zhang ; A.N. Zhou ; M. Nazem
- TC106 Conferences in Unsaturated Soils - 7th International Conference on Unsaturated Soils 2018 (Hong Kong)
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- Numerical & Constitutive Modeling
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