Non‐linear behavior of mass concrete in three‐dimensional problems using a smeared crack approach

Abstract

SUMMARYA smeared crack approach has been proposed to model the static and dynamic behavior of mass concrete in three-dimensional space. The proposed model simulates the tensile fracture on the mass concrete and contains pre-softening behavior, softening initiation, fracture energy conservation and strain rate e ects under dynamic loads. The validity of the proposed model has been checked using the available experimental results under static and dynamic loads. The direct and indirect displacement control algorithms have been employed under incremental increasing static loads. It was found that the proposed model gives excellent results and crack proÿles when compared with the available data under static loads. The Koyna Dam in India has been used to verify the dynamic behavior of the proposed model. It was found that the resulting crack proÿles were in good agreement with the available experimental results. Finally, the Morrow Point Dam was analyzed, including the dam-reservoir interaction e ects, to consider its non-linear seismic behavior. It was found that the resulting crack proÿles were in good agreement with the contour of maximum principal stresses and no numerical instability occurred during the analysis.

Domain reduction method for seismic analysis of Dam-Foundation-Fault system

“…Reliable designing of concrete dams requires accurate simulation of the dam-foundation-reservoir system and choosing of suitable seismic excitation. The behavior of dam-foundation-reservoir system has been investigated extensively during recent years [1][2][3][4][5][6][7]. Dynamic analysis of dam-foundation-reservoir systems is a complex problem by nature.…”

A study on the contraction joint element and damage constitutive model for concrete arch dams

“…Marfia et al (2004) analyzed the change in damage factors for reinforced concrete in the process of compressive and tensile softening. Mirzabozorg and Ghaemian (2005) proposed a damage constitutive model to describe the behavior of concrete under static and dynamic loads. Lin and Hu (2005) analyzed the effects of the strain-rate on a damage constitutive model for concrete.…”

Coupled elasto-plasticity damage constitutive models for concrete

“…A new structural damage identification method was proposed by Chen et al (2005) using limited test static displacement based on the grey system theory. Mirzabozorg and Ghaemian (2005) proposed a smeared crack approach to model the static and dynamic behavior of mass concrete in 3D space. The strain-rate effects were discussed by Lin and Hu (2005) for the earthquake safety assessment of concrete dams.…”