Eps is utilized in the pipelines of underground Mass Rapid Transit

• Main Authors: Ming-Tsung Liu, 劉明璁
• Other Authors: 林正平
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/h37ee8

碩士 === 國立臺北科技大學 === 土木與防災研究所 === 102 === Taiwan''s continued expansion of public construction investment. The amount spent on public works each year more than one hundred billion NT. Taipei MRT project is one of the very significant building. With the development of underground MRT project.Laid in the ground past the old Lifelines must also be dismantled migrate or update. The current specification in construction demolition backfill migration is the use of concrete as a backfill material. In pipelines distance 1.2 meters above the ground using CLSM. but less than 1.2 meters using the strength of 140kgf/cm &;sup2; concrete as a backfill material. The purpose of using CLSM is more convenient for future re-excavation of the secondary migration and can be opened to traffic as soon as possible. Because pipelines is very fragile, and often careless when excavation dug concrete damage caused by pipelines, leading to project delays. The main reason for the slow construction of the pipelines has the following five: 1. Because construction is slow or unable rainy construction. 2. Repair delays caused by ruptured pipelines. 3. Causing damage to the concrete flowing into the pipelines construction and pipelines blockage. 4. Old pipelines data does not comply with existing data, looking for the old pipelines difficulties. 5. To prevent damage to the pipeline, careful excavation and slow down. MRT underground pipelines construction and engineering projects are often the main structure must complement each other. If the pipeline project would directly affect the duration of the delay. If using ground workers foam (EPS) as a backfill material. Replace concrete backfill. The reason may be a slow improvement in the construction of 1,2,3,5 items. Because EPS has super lightweight, economy, water resistance, simple construction, good self and other characteristics. If this material is used as backfill underground concrete alternative to the MRT project pipelines projects. Not only can shorten the construction period can also reduce costs. In this study, uniaxial compression tests and cost-benefit analysis to verify the EPS alternative CLSM as a backfill material used in underground MRT project in the pipeline project.