Professor, Ph.D., P. Eng., PMP
School of Civil Engineering, Chongqing University, Chongqing, 400045, China
Tel: 13808216151
Fax: 0086-23-65252732
Email: cewanggang@163.com
Education
PH.D. 7/2005， Tsinghua University
B.S. 7/2000, Tsinghua University
Career Details
2005/07-2014/06: Engineer, Senior Engineer, Deputy Chief Engineer, Yalong River Hydropower Development Company, Chengdu, China
2014/07-present: Professor, Director of Geotechnical Laboratory, College of Civil Engineering, Chongqing University, Chongqing, China
Research interests
1. Liquefaction Large Deformation Theory and Evaluation Method
Aiming at the problem that saturated non-cohesive soil foundations may fail due to liquefaction under seismic action, a new physical mechanism, constitutive model, numerical algorithm, and calculation program for large deformation of saturated sand after liquefaction are proposed. The physical mechanism and simulation method of shear water absorption and flow slide of dilative sand after liquefaction are put forward, and a practical method for predicting large foundation deformation caused by vibration liquefaction is proposed. A nonlinear large deformation evaluation method for integrated structure is developed. The proposed constitutive model has been integrated into internationally renowned numerical analysis platforms such as DIANA-SWANDYNE and OpenSEES, and part of the results have been adopted in the *Seismic Design Standard for Underground Structures*.
Facing the major needs of coral reef island construction in the South China Sea, a systematic study on the liquefaction characteristics of coral reef calcareous sand is carried out. A liquefaction constitutive model considering the influence of particle breakage during the cyclic process of calcareous sand and a practical method for evaluating the liquefaction safety of coral sand foundations are proposed.
2. Fluid-Solid Coupling in Geotechnical Mass and Seepage Safety Evaluation
Internal erosion of soil under seepage action may lead to problems such as slope collapse, ground subsidence, and dam leakage and breach. A series of soil shear-seepage test devices are developed to reveal the evolution law, internal mechanism, and influencing factors of the seepage characteristics of compacted clay during large shear deformation. New mechanisms, discriminant methods, and engineering prevention measures for leakage and seepage failure of clay core walls are proposed and adopted in the design of high earth-rock dam projects such as Lianghekou and Shuangjiangkou. Test equipment, erosion models, and large-scale fluid-solid coupling calculation programs for internal unstable soil erosion are developed and applied to the calculation of actual projects such as Luding.
3. Large-Scale Numerical Calculation of Geotechnical Structures
A series of large-scale parallel calculation programs for static and dynamic consolidation seismic response analysis of geotechnical structure systems are developed and applied to the safety evaluation of coastal structure systems such as Tianjin Huanghua Port, Shanghai Yangshan Port, and more than 10 large earth-rock dam projects in China. Currently, the development of an ultra-large-scale (over 10 billion degrees of freedom) multi-field coupling numerical calculation platform is underway.
