Research on Waterproof Performance of Composite Sealing Gasket for Assembly Joints of Prefabricated Subway Stations
Publication: ICCREM 2022
ABSTRACT
The prefabricated subway stations are easily affected by hydrological, geological, and other factors, and there is a great risk of water leakage. Taking a station of Changchun subway as the background, the paper explores the stress and waterproof performance of composite sealing gaskets at the assembly joints of prefabricated components are explored. Taking the average contact stress of the sealing gasket as the waterproof index, the compression test and numerical simulation of the composite sealing gasket were carried out. The secondary waterproof effect of the composite sealing gasket and the influence of different offsets on the waterproof performance were analyzed. Through comparative analysis, the accuracy of the numerical model is verified. Under the secondary waterproof effect, the waterproof performance of the composite sealing gasket is significantly improved, and water seepage mainly occurs on the contact surface between the sealing gaskets. It is recommended that the joint opening and offset be controlled within 7 mm and 5 mm, respectively, which can fully meet the long-term waterproof requirements of prefabricated subway stations.
Get full access to this article
View all available purchase options and get full access to this chapter.
REFERENCES
Gong, C. J., and Ding, W. Q. (2018). “Waterproof properties of elastic sealing gaskets used in segmental joints of large-diameter underwater shield tunnels: Design methodology and engineering guidance.” Tunnel Construction, 38(10), 1712–1722. (in Chinese).
Luo, Y. H. (2021). Analysis of Waterproof Performance of Sealing Gaskets at Joints of Subway Shield Tunnel Segments. Harbin Institute of Technology, Harbin, China, 13–22. (in Chinese).
Ye, M. X., Ding, W. Q., Chen, J. W., Jin, Y. L., Liu, H., and Tu, X. B. (2019). “Sensitivity analysis of influencing factors on mechanical properties of EPDM sealing gasket of segment joint of shield tunnel.” Tunnel Construction, 39(S2), 200–206. (in Chinese).
Zhang, W. J., Ding, C., Zhang, C. P., and Jiang, K. (2020a). “Influence of different dislocation amount on composite sealing gasket and long-term waterproofing performance prediction.” Tunnel Construction, 40(03), 337–345. (in Chinese).
Zhang, W. J., Ding, C., Zhang, G. L., Wang, W., Shang, G. D. D., and Jiang, K. (2020b). “Type selection and design of composite sealing gasket for segment joints of shield tunnel.” Tunnel Construction, 40(02), 246–255. (in Chinese).
Zhang, Y. Z., Feng, S. M., You, G. M., and Wen, Z. Y. (2020). “Study on waterproof mechanism of shield tunnel joints considering water pressure process.” Tunnel Construction, 40(11), 1594–1601. (in Chinese).
Zhao, M., Ding, W. Q., Peng, Y. C., Shen, B. W., Guo, X. H., and Yang, L. S. (2013). “Experimental study on the reliability of shield tunnel segment joints to remain watertight under high water pressure.” Modern Tunnelling Technology, 50(03), 87–93. (in Chinese).
Zhao, Y. C., Xiao, L. G., Liu, Z. W., and Yang, H. D. (2008). “Experiment study and design on the watertight seal for reinforced concrete segment joint of Wuhan Yangtze River Tunnel.” Tunnel Construction, 05, 570–575. (in Chinese).
Zhu, Y. H., Wang, J. Y., Dong, Z. B., and Liu, J. G. (2019). “Design of sealing gasket of connection gallery bored by shield and its waterproofing test.” Tunnel Construction, 39(01), 110–118. (in Chinese).
Information & Authors
Information
Published In
ICCREM 2022
Pages: 356 - 366
History
Published online: Dec 15, 2022
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.