JCI Annual Convention in SENDAI

Presentation information

第39回コンクリート工学講演会

B.Structural & Design » Maintenance & Life cycle / Flexure

Maintenance & Life cycle Ⅱ / Flexure

Wed. Jul 12, 2017 1:15 PM - 3:15 PM Room 9 (Meeting Room 3 / Exhibition Building 1F)

座長:幸左賢二(土木), 衣笠秀行(建築)

[2223] STRUCTURAL DAMAGE PROCESS OF AN UNDERWATER SHIELD TUNNEL IN AN AGGRESSIVE ENVIRONMENT

Zhengshu HE1, Sijin LIU2, Chuan HE2, Mitsuyoshi AKIYAMA3 (1.Waseda University 2.Southwest Jiaotong University 3.早稲田大学)

Keywords:aggressive environment, damage, deterioration, underwater shield tunnel

During the life-cycle of an underwater shield tunnel, the long-term performance of the segmental linings will be affected by mechanical and environmental stressors, such as high water-soil pressure and aggressive agents. Therefore, the structural performance of a tunnel will deteriorate with time after its construction is completed. This paper investigates the damage process of segmental specimens under different load levels in an aggressive environment based on experiments of corrosion-accelerated specimens of a tunnel segment. In addition, an estimation method for determining the deteriorating damage of segmental linings is proposed.