Direct Measurement of the Contact Normal Stress Distribution between Two Smooth Joint Surfaces

Zon Yee Yang; Wei Chieh Chiu

doi:10.4028/www.scientific.net/AMM.638-640.427

Paper Titles

Axial Unloading Test of Soil Based on the GDS Triaxial Apparatus
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Boundary Element Method for Horizontally Polarized Shear Wave Scattering by an Elliptical Cavity in Orthotropic Graded Saturated Porous Media
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Cause Analysis of Sand Density and Engineering Evaluation
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Creep Property Experimental Research of Offshore Unconsolidated Sand Reservoir
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Direct Measurement of the Contact Normal Stress Distribution between Two Smooth Joint Surfaces
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Dynamic Analysis of Pile-Soil-Structure Interaction System under Blasting Load
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Example Analysis on Safety Monitoring of Excavation Support Engineering
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Experimental Research on Application of Dynamic Compaction for the Treatment of Collapsible Loess Foundation
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Experimental Study on Base Reaction and Deformation Characteristic of Variable Modulus Foundation for Frame-Tube Structure
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Direct Measurement of the Contact Normal Stress...

Direct Measurement of the Contact Normal Stress Distribution between Two Smooth Joint Surfaces

Abstract:

The shear strength of rock joints is highly depended upon the failure mode of joint asperity. At lower normal stress slide-up of one asperity up over another mode, however at high normal stress the joint asperities are sheared off at the base. This research uses pressure measurement film to directly measure the contact normal stress between smooth joint surfaces. It demonstrates that the density of color impression is capable of capturing the normal stress distribution behavior. The contact normal stress distribution during shearing is changed. After shearing, the contact stress becomes large. This increase in contact normal stress is to fracture the joint wall material.