| Summary: | 碩士 === 國立臺北科技大學 === 土木工程系土木與防災碩士班 === 106 === Due to the commencement of the green building material in 2004 in Taiwan, there has been good coordination with the “National Primary Plan for Energy Conservation and Carbon Reduction” carried out by the Executive Yuan in April 2010 which has ambition to bring Taiwan to a low-carbon society in a systematical way and achieve the goal for carbon reduction. Therefore, with such an attempt, the control and specification of building materials and method of construction has to take into consideration the impact on the environment.
Moreover, the deteriorating conditions and under-capacity of aging underground infrastructure including water and wastewater distribution and collection systems, gas, petroleum and chemical pipelines, electrical and communication network and other utility corridors have resulted in trenchless technology as the method to fix the problem without disturbing the natural environment.
In the past, interest in use of trenchless technology and the modification of formulas to predict the total jacking force has increased in the last decade and a number of studies that dealt with the frictional forces and predictive formulas have been successfully completed. In view of the fact that the theory of geotechnical engineering has matured, there has been an implementation of computer aided software and rapid upgrades of 3D plaxis models. The application of numerical analysis methods and use of 3D plaxis in tunnel design have gradually played an important role in geotechnical engineering.
In this study, five (5) predictive models from previous scholars were stated in detailed and two of them were compared with a new modified model to ascertain the most suitable one for the given site. In addition, a numerical analysis was carried out using the PLAXIS Finite Element 3D Program by setting the relevant control parameters. This helps us better understand the jacking forces as it relates to displacement, stress, and strain on the soil as well as possible environmental impacts on the surrounding area
|
|---|
