Prototype test study on dynamic stress of utility tunnel under traffic load

• Main Authors: Lianzi Jiang, Zhongqiu Xie, Yi Huang
• Format: Article
• Language: English
• Published: JVE International 2020-02-01
• Series: Journal of Vibroengineering
• Subjects: tunneling engineering; traffic loading; utility tunnel; dynamic characteristics; field test
• Online Access: https://www.jvejournals.com/article/20483

In order to ensure the safety of utility tunnel, the response of each measuring point of the utility tunnel at different speeds is analyzed under the condition that half of the vehicle body is within the boundary of the utility tunnel. The influence of different speeds on the structure of the utility tunnel under the same working condition is discussed, and the dynamic stress variation law of the utility tunnel under actual traffic load is analyzed. The results show that the influence of vehicle speed on the left wall and axillary of the longitudinal utility tunnel is greater than that of the cross-section. The peak values of transverse tensile stress and compressive stress of the right side wall are the largest. The peak transverse stress of the left wall is only 1/3 of that of the right wall. The peak value of the longitudinal compressive stress of the left wall is the largest. The peak value of longitudinal tensile stress of roof is the largest. In the design and construction, the weak position should be reinforced.