Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Geomechanics and Engineering Volume 32, Number 2, January25 2023 , pages 179-191 DOI: https://doi.org/10.12989/gae.2023.32.2.179 |
|
|
|
Experimental investigation of earth pressure on retaining wall and ground settlement subjected to tunneling in confined space |
||
Jinyuan Wang, Wenjun Li, Rui Rui, Yuxin Zhai and Qing He
|
||
| Abstract | ||
| To study the influences of tunneling on the earth pressure and ground settlement when the tunnel passes through the adjacent underground retaining structure, 30 two-dimensional model tests were carried out taking into account the ratios of tunnel excavation depth (H) to lateral width (w), excavation width (B), and excavation distance using a custom-made test device and an analogical soil. Tunnel crossing adjacent existing retaining structure (TCE) and tunnel crossing adjacent newly-built retaining structure (TCN) were simulated and the earth pressure variations and ground settlement distribution during excavation were analyzed. For TCE condition, the earth pressure increments, maximum ground settlement and the curvature of the ground settlement curve are negatively related to H/B, but positively related to H/s and H/w. For TCN condition, most trends are consistent with TCE except that the earth pressure increments and the curvature of ground settlement curve are negatively related to H/w. The maximum ground settlement is larger than that observed in tunnel crossing the existing underground structure. This study provides an assessment basis for the design and construction under confined space conditions. | ||
| Key Words | ||
| analogical soil; earth pressure; ground settlement; model test; retaining wall; tunneling | ||
| Address | ||
| Jinyuan Wang and Rui Rui: School of Civil Engineering and Architecture, Wuhan University of Technology, 122 Luoshi Rd., Wuhan 430070, China Wenjun Li: China Harbour Engineering Company Ltd., 9 Chunxiu Rd., Dongzhi gate, Dongcheng District, Beijing 100027, China Yuxin Zhai: China Railway Construction Group Co., Ltd., No. 69 Fuxing Road, Haidian District, Beijing 100040, China Qing He: China Fortune Land Development Co., Ltd., No. 18 Xiaguangli, Dongsanhuan North Road, Chaoyang District, Beijing 100027, China | ||