コンクリート工学年次大会2017(仙台)

講演情報

第39回コンクリート工学講演会

B.構造・設計 » 維持管理・ライフサイクル/曲げ

維持管理・ライフサイクルⅡ/曲げ

2017年7月12日(水) 13:15 〜 15:15 第9会場 (会議室3/展示棟1階)

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, 秋山充良3 (1.Waseda University 2.Southwest Jiaotong University 3.早稲田大学)

キーワード: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.