Arch dam deformation is comprehensively affected by water pressure, temperature, dam’s structural behavior and material properties as well as other factors. Among them the water pressure and temperature are external factors (source factors) that cause dam deformation, and dam’s structural behavior and material properties are the internal factors of deformation (resistance factors). The dam deformation is the result of the mutual game playing between source factors and resistance factors. Therefore, resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model, where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height, and material property is embodied by the elastic modulus of dam. On the basis of analyzing the correlation between dam deformation and resistance factors, the game model of safety monitoring for arch dam deformation is put forward.
Arch dam deformation is comprehensively affected by water pressure,temperature,dam's structural behavior and material properties as well as other factors.Among them the water pressure and temperature are external factors(source factors) that cause dam deformation,and dam's structural behavior and material properties are the internal factors of deformation(resistance factors).The dam deformation is the result of the mutual game playing between source factors and resistance factors.Therefore,resistance factor... 相似文献
Rock rebound relaxation deformation,or even rock burst,caused by the excavation of dam base and abutment or high rock slope affects their stability and results in the fall of mechanical properties of the rock.So an inverse analysis method was proposed in this paper to establish the time-dependent model of deformation modulus caused by excavation rebound.The basic principle is based on the combination of observed data of the excavation rebound deformation of dam abutment or rock slope,and the calculated rebo... 相似文献
Arch dam deformation is comprehensively affected by water pressure, temperature, dam’s structural behavior and material properties as well as other factors. Among them the water pressure and temperature are external factors (source factors) that cause dam deformation, and dam’s structural behavior and material properties are the internal factors of deformation (resistance factors). The dam deformation is the result of the mutual game playing between source factors and resistance factors. Therefore, resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model, where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height, and material property is embodied by the elastic modulus of dam. On the basis of analyzing the correlation between dam deformation and resistance factors, the game model of safety monitoring for arch dam deformation is put forward. 相似文献
In high ground stress zone, rebound deformation of excavation of arch dam bedrock has a significant impact on the structural behavior, design and construction of arch dam. Based on the analysis of mechanical effects of excavation rebound, with both stress and deformation as two constraint conditions and deformation modulus as a controlling condition, the method to determine a better concreting time of dam body was put forward. All of these play an important guiding role in the excavation of dam bedrock and the construction of dam body. 相似文献
Rock rebound relaxation deformation, or even rock burst, caused by the excavation of dam base and abutment or high rock slope affects their stability and results in the fall of mechanical properties of the rock. So an inverse analysis method was proposed in this paper to establish the time-dependent model of deformation modulus caused by excavation rebound. The basic principle is based on the combination of observed data of the excavation rebound deformation of dam abutment or rock slope, and the calculated rebound deformation by FEM under ground stress at the corresponding time in the excavation process. The norm of the residuals of observed data and calculated data are taken as the objective function. Accordingly, the time-dependent model of bedrock deformation modulus can be established. The method displays its significance in the design of excavation, construction and operation management of dam base and high slope.
Rock rebound relaxation deformation, or even rock burst, caused by the excavation of dam base and abutment or high rock slope affects their stability and results in the fall of mechanical properties of the rock. So an inverse analysis method was proposed in this paper to establish the time-dependent model of deformation modulus caused by excavation rebound. The basic principle is based on the combination of observed data of the excavation rebound deformation of dam abutment or rock slope, and the calculated rebound deformation by FEM under ground stress at the corresponding time in the excavation process. The norm of the residuals of observed data and calculated data are taken as the objective function. Accordingly, the time-dependent model of bedrock deformation modulus can be established. The method displays its significance in the design of excavation, construction and operation management of dam base and high slope. 相似文献
