Numerical simulation of damage in high arch dam due to earthquake

Zhong, Hong; Lin, Gao; Zhang, Dongliang

doi:10.1007/s11709-009-0039-9

Cited by 7 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among super-high dams, the arch dams transfer loads to the dam foundations and abutments through the effect of the beam and the arching effect, so that the dam body is mainly compressed, and hence, the compressive performance of concrete materials can be fully realized. It has become an extremely beneficial dam type of super-high dams because of its advantages of high safety, strong seismic capacity, large dam discharge, and small concrete quantities [1][2][3][4][5]. However, as most of the load is transferred to the rock on both sides of the dam, high stability and strength of the rock are required.…”

Section: Introductionmentioning

confidence: 99%

“…According to the analysis results, the overall stability and safety of the arch dam under the structural design and foundation treatment design scheme are demonstrated, and the overall safety of the arch dam under the current implementation scheme is comprehensively evaluated, and the results provide a basis for the structural design and foundation treatment design of the Xiluodu high arch dam. Advances in Civil Engineering normal operation of 18 units); the dead water level is 540.00 m, and the corresponding downstream water level is 378.00 m; the total storage capacity is 11.57 billion m 3 , and the regulated storage capacity is 641.6 billion m 3 . is project is a giant hydropower station that mainly generates electricity and has comprehensive utilization benefits such as sand retaining, flood control, and improving downstream shipping.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Overall Stability Analysis of Xiluodu High Arch Dam Based on Fine Three‐Dimension Numerical Modeling

Feng

Tang

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The RFPA3D is used to establish a fine finite element model of 6.63 million elements, which realizes the fine simulation of the stability of the Xiluodu arch dam under layered, overall, multiworking conditions and multistress fields, and the cracking and failure process under overload. The structural design scheme of the arch dam and the corresponding foundation treatment design are evaluated. The model fully reflects the measures of dam shape structure design, angle fitting structure design, and foundation concrete replacement in the Xiluodu arch dam technical design stage. The RFPA3D adopts the mesoelement elastic damage model, which considers the Mohr–Coulomb criterion of shear fracture and the maximum tensile failure criterion, and assumes that the mechanical properties of the element satisfy Weibull distribution to consider its heterogeneity. The simulation results show that, under normal load conditions, the dam foundation surface after comprehensive reinforcement has better overall stability, the stress and deformation of the dam body have good symmetry, and the overload factor of crack initiation under overload calculation K1 = 2P0 (P0 is normal water load), the nonlinear deformation overload factor K2 = 3.5–4P0, and the limit load factor K3 = 7.5–8.0P0, dam safety can be satisfied. The RFPA3D is used to establish a superlarge fine model to study the overall stability of the high arch dam, which provides an effective method for analysis and research of other large hydraulic projects in the world.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Overall Stability Analysis of Xiluodu High Arch Dam Based on Fine Three‐Dimension Numerical Modeling

Feng

Tang

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…In addition, concrete dams are made of brittle materials and subjected to a high level of tensile stress, and therefore, in high-stress zones with excessive tensile strength, damage or cracks could occur. Thus, the gradual deterioration of concrete [4][5][6] initiates micro-cracks and their propagation [7,8]. Independently of the relatively low risk of global collapse, structural damage to concrete dams affects durability dramatically.…”

Section: Introductionmentioning

confidence: 99%

A damaged non-homogeneous Timoshenko beam model for a dam subjected to aging effects

Chiaia¹,

Biagi

Placidi

2020

Mathematics and Mechanics of Solids

View full text Add to dashboard Cite

A hemi-variational formulation for a damaged non-homogeneous Timoshenko beam is proposed here for the purpose of fast simulation of the properties of a dam. The dam is therefore modeled as a damaged non-homogeneous Timoshenko beam embedded in 2D space. The damage evolution and the mechanics of the beam are governed both by the hemi-variational principle and by the assumption on the form of the deformation energy functional, that comprehends the dissipative part owing to damage-aging effects. In the formulation, the Karush–Kuhn–Tucker (KKT) condition is derived and the damage, which locally decreases the stiffness (i.e., axial, bending, and shear stiffness) of the beam, becomes relevant once a measure of the elastic energy, called the normalized undamaged elastic energy, reaches a certain threshold that is constitutively prescribed ab initio. The aging effect is assumed by reducing such a threshold in the neighborhood of the bottom of the beam, where the concentration of the chemical and physical attacks is higher. As a result, we show a method for the calculation of the mechanical failure condition. In addition, we observe that, even though this threshold is assumed to decrease in a large region far from the bottom of the dam, the damage is confined at the bottom of it. Thus, we have proved that the trapezoidal shape that is used in the dam design is useful not only to decrease the state of stress in the elastic regime, but also to confine the effects of damage evolution owing to the aging effects.

show abstract

“…Du [14] carried out safety assessment on high gravity dams and several arch dams with a rate-dependency elastoplastic damage model. Pan and Zhang et al [15] and Zhong et al [16] used simple bilinear soften strain-stress in uniaxial tension to numerically simulate the damage patterns of an arch dam with dam-foundation interaction under strong earthquake loading, respectively.…”

Section: Introductionmentioning

confidence: 99%

Safety evaluation of Dagangshan arch dam resisting strong earthquakes with a rate-dependency anisotropic damage model

Zhang

Chen

et al. 2011

Sci. China Technol. Sci.

Self Cite

View full text Add to dashboard Cite

This paper presents a model to simulate the safe behavior of Dagangshan arch dam with a rate-dependency anisotropic damage model. This model considers the damage of asymmetry and anisotropy under cyclic loading of tension and compression, and it is used in the compiled finite element code. The material parameters used in the model can be identified from uniaxial static and dynamic experiments. Thereafter, it is used for analyzing damage and failure patterns of the dam subjected to water pressure and strong earthquakes. The numerical results show that it is necessary to consider both asymmetry between tension and compression and anisotropy of damage. Severe damage regions of the dam reveal brittle and risky positions clearly. Meanwhile damage patterns show the failure trend and safety behaviors of the dam. These results match well with that of the experiments carried out in DUT. The proposed model may be used to predict the damage patterns and potential failure modes of concrete structures like the dam. And the aseismic performance of the dam can be figured out.concrete, Dagangshan arch dam, anisotropic damage failure criteria, strain rate-dependency, earthquake, unilateral effect Citation:Du R Q, Zhang Q, Chen S H, et al. Safety evaluation of Dagangshan arch dam resisting strong earthquakes with a rate-dependency anisotropic damage model.

show abstract

Numerical simulation of damage in high arch dam due to earthquake

Cited by 7 publications

References 5 publications

Overall Stability Analysis of Xiluodu High Arch Dam Based on Fine Three‐Dimension Numerical Modeling

Overall Stability Analysis of Xiluodu High Arch Dam Based on Fine Three‐Dimension Numerical Modeling

A damaged non-homogeneous Timoshenko beam model for a dam subjected to aging effects

Safety evaluation of Dagangshan arch dam resisting strong earthquakes with a rate-dependency anisotropic damage model

Contact Info

Product

Resources

About