https://scholars.lib.ntu.edu.tw/handle/123456789/597948
標題: | Challenges and Sustainability-Based Solutions of Diaphragm Wall Construction for LG06 Underground Station in Taipei MRT | 作者: | Liu T.-Y Chou N.N.S Lin S.-J Tzou H.-K PO-HAN CHEN |
關鍵字: | Borehole method;Diaphragm wall;Extremely hard rock;Rebar cage;Sustainability | 公開日期: | 2021 | 來源出版物: | Transportation Infrastructure Geotechnology | 摘要: | Diaphragm wall was adopted for the subsurface excavation for LG06 underground station, one of the Wanda line stations in Taipei MRT, and it encountered many geological challenges during construction. The geological conditions in this zone are mostly clay and hard rock layer. The unconfined compression strengths of the extremely hard rock samples were tested during construction. The results were far beyond that obtained during site investigation, and hence is a big challenge for constructing the diaphragm wall. Furthermore, the Tai-power 161?kV high-voltage power cable box is longitudinally crossing the entire station zone. It leads to great difficulty during the construction of diaphragm walls. The neighbored houses are very close to the job site and cause a high risk of diaphragm wall construction. Engineers must find the solution to protect the Tai-power cable box and the adjacent houses to prevent any disasters. This paper presents how the borehole drilling method was adopted to conquer the complicated rock problem for diaphragm wall excavation. Engineers proposed a unique method by moving the rebar cage horizontally to avoid damaging the 161?kV power concrete box. Besides, a series of grouting piles with reinforcing bars were installed before excavating guide ditches for the diaphragm wall. With the innovative mitigations, the challenges, as mentioned earlier, have been mitigated. Sustainable construction technologies were successfully executed for the diaphragm wall of the LG06 station project, Wanda line of Taipei MRT. ? 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116938365&doi=10.1007%2fs40515-021-00208-0&partnerID=40&md5=073b60caceaf9a3efcc62f7260111ba3 https://scholars.lib.ntu.edu.tw/handle/123456789/597948 |
ISSN: | 21967202 | DOI: | 10.1007/s40515-021-00208-0 |
顯示於: | 土木工程學系 |
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