Determining the Critical Intensity for Crack Initiation in Concrete Arch Dams by Endurance Time Method

H. Mostafaei,M. Mashayekhi

doi:10.52547/nmce.5.2.21

Abstract

Determining the Critical Intensity for Crack Initiation in Concrete Arch Dams by Endurance Time Method

Highlights

Concrete arch dams are critical infrastructures constructed for different purposes, such as irrigation, flood control, and power generation
The present study aims to employ the endurance time (ET) method for determining the intensity measure value at which a crack in the concrete arch dam appears
A method for determining critical seismic intensity for crack initiation which is used for evaluating the seismic performance of concrete arch dams is proposed

Summary

Introduction

Concrete arch dams are critical infrastructures constructed for different purposes, such as irrigation, flood control, and power generation. In contrast to the equivalent lateral force method, response spectrum modal analysis includes several modes so that more than 90% of the total mass of the system is covered [3]. In this method, the earthquake is characterized by acceleration spectrum. The main drawback of time history analysis is the fact that the results strongly depend on the selected ground motions This matter is intensified when the nonlinear models are employed. Alembagheri and Ghaemian [9] investigated damage of the Morrow point arch dam Another analysis method that can be used for seismic analysis of dams is endurance time (ET) method. This method was initially developed by Estekanchi et al [10]

Objectives

Findings

Discussion

Conclusion