Establishing Equivalent Force-Spring Models for Underground Piping Systems

• Main Authors: Chien-Hung Lin, 林建宏
• Other Authors: Ching-Tung Huang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/9m7cy9

碩士 === 國立臺灣科技大學 === 營建工程系 === 94 === The main objective of thesis is to develop a method for constructing equivalent force-spring models for underground piping systems. In this method, the underground pipes are modeled as a series-connected spring system with a set of externally applied loads. The proposed force-spring models is capable of providing a more transparent analytical method for the underground piping structures in a manners analogy to the traditional method for analyzing building structures. Based on the force-spring model, the expression for the equivalent spring and equivalent force are both provided for the exact analysis and the Finite-Element method analysis. A subsequent pseudo-dynamic analysis is used to examine the solution accuracy emphasizing on the joint deformation and the pipe strain. The analytical result shows that the Finite-Element Method can provide good to excellent strain solution. However, the solution error become substantial for the joint deformation.