Field Friction Stress Analysis and Effective Embedded Length of Reinforced Earth Structures

• Main Authors: XUAN-LI HUANG, 黃宣澧
• Other Authors: Tsung-jung Hsieh
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/91306444144876211151

碩士 === 中華技術學院 === 土木防災工程研究所 === 97 === To insight the mechanic behavior of reinforced retaining walls, a prototype of reinforced retaining wall has been constructed to explore the stress distribution and the friction stress. Based on FHWA research, the connection of maximum tensile stress points of reinforcements is the potential failure plane of reinforced earth. The research takes the maximum tensile stress of reinforcement to analog the pulling end of pull-out tests to investigate the effective embedded length of reinforced retaining walls. By using the statistical linear regression analysis, the maximum stress at different layers of reinforcement was used to calculating the lateral earth pressure coefficient of reinforced earth. The results showed that connections of the maximum tensile stress points of reinforcements can be divided into three sections. The potential failure plane connected by the three sectional maximum tensile stress points was located between bilinear and Rankine failure surfaces recommended by FHWA. The results showed that connections of the maximum tensile stress points of reinforcements can be divided into three sections. The potential failure plane connected by the three sectional maximum tensile stress points was located between bilinear and Rankine failure surfaces recommended by FHWA. The effective embedded length count from maximum tensile stress points of reinforcements is 3m. The exceed length of reinforcement beyond 3m can be defined ineffective embedded length. The statistical linear regression analysis of maximum tensile stresses shows the coefficient of lateral earth pressure in reinforced earth is below than active and rest. Key words：Reinforcement；Friction Stress；Effective Length.