Computational Modelling Strategies for Nonlinear Response Prediction of Corroded Circular RC Bridge Piers
A numerical model is presented that enables simulation of the nonlinear flexural response of corroded reinforced concrete (RC) components. The model employs a force-based nonlinear fibre beam-column element. A new phenomenological uniaxial material model for corroded reinforcing steel is used. This model accounts for the impact of corrosion on buckling strength, postbuckling behaviour, and low-cycle fatigue degradation of vertical reinforcement under cyclic loading. The basic material model is validated through comparison of simulated and observed responses for uncorroded RC columns. The model is used to explore the impact of corrosion on the inelastic response of corroded RC columns.
Seismic deformation of reinforced concrete piers corroded by saline soil
To understand the degradation of RC piers due to corrosion of saline soil, the deformation of their RC piers must be determined in addition to their load capacity. The current study experimentally investigates deformation in corroded RC piers under flexural failure and develops a theoretical model to estimate their deformation. Of these, 15 RC piers were tested under low cyclic loading for two applied axial force-namely, 0.12 and 0.36-and at seven corrosion ratios. The failure modes, skeleton curve and the effects of axial force and corrosion ratio on deformation were analysed. The test results demonstrated that corrosion significantly lower the deformation of RC piers. Thereafter, a theoretical model was given based on classical lamination theory. The model accounts for the effect of corrosion on deformation through the reduction in area of steel reinforcement caused by corrosion. The model of flexural failure in RC piers provided accurate predictions of the test results. The calculated deformation of RC piers further mirrored the corrosion and axial force effects. Also, the calculated deformation of RC piers intends to provide guidelines for displacement-based seismic design of RC structures exposed to chloride-inducing corrosion.
From the World Literature
LIST OF ILLUSTRATIONS ix ACKNOWLEDGMENTS xi INTRODUCTION: Goethe Coins a Phrase 1 PART ONE: CIRCULATION Chapter 1: Gilgamesh's Quest 39 Chapter 2: The Pope's Blowgun 78 Chapter 3: From the Old World to the Whole World 110 PART TWO: TRANSLATION Chapter 4: Love in the Necropolis 147 Chapter 5: The Afterlife of Mechthild von Magdeburg 170 Chapter 6: Kafka Comes Home 187 PART THREE: PRODUCTION Chapter 7: English in the World 209 Chapter 8: Rigoberta Menchu in Print 231 Chapter 9: The Poisoned Book 260 CONCLUSION: World Enough and Time 281 BIBLIOGRAPHY 305 INDEX 319