Study on the Deformation of Retaining Structure of Pit-in-Pit Excavation

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Abstract:

There are more and more pit-in-pit excavations in cities, which include inner pit and outer pit. Owing to the inner pit excavation, pit-in-pit problem aroused and brought about accidents. For this reason, based on the co-construction, deep, and large pit-in-pit of Shanghai Museum of Natural History and Metro Line 13, the excavation influence between inner pit and outer pit was analyzed. The deformation of underground diaphragm wall under the condition of three different distances between outer pit and inner pit were compared through centrifuge model tests. Then, the effect of excavation width of outer pit on underground diaphragm walls was researched through numerical analysis. Results show that the deformation of outer underground diaphragm wall increased with the excavation width of outer pit, for the inner pit, the opposite was true. The critical influence distance between outer pit and inner pit was within 22 meter and 24 meter. According to the critical distance, the area adverse to excavation pit stability was identified.

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Periodical:

Advanced Materials Research (Volumes 243-249)

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2903-2908

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May 2011

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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[1] Industry Standards of People's Republic of China. DBJ-61-97, 1997, in Chinese.

Google Scholar

[2] Industry Standards of People's Republic of China. YB 9258-97, 1997, in Chinese.

Google Scholar

[3] Industry Standards of People's Republic of China. SZ-08-2000, 2000, in Chinese.

Google Scholar

[4] Xiaonan GONG. Chinese Civil Engineering Journal Vol. 38(2005), pp.99-108, in Chinese.

Google Scholar

[5] Yueying Dong, Zhenyu LEI, Xufan BAO. Underground Space Vol. 24(2004), pp.402-405, in Chinese.

Google Scholar

[6] Mingbing WU, Dafeng LIN, et al. Journal of Geotechnical Engineering Vol. 28(2006), pp.1569-1572, in Chinese.

Google Scholar

[7] Leyi CHEN, Jingpei LI, Fayun LIANG. Journal of Geotechnical Engineering Vol. 30(2008), pp.59-61, in Chinese.

Google Scholar

[8] Weicheng PAN. The Ninth National Symposium on Ground Handling Vol. 1(2006), pp.397-399, in Chinese.

Google Scholar

[9] Xufan BAO, Li ZHUANG, Peilin LÜ. Journal of Geotechnical Engineering Vol. 28(2006), pp.1208-1212, in Chinese.

Google Scholar

[10] Longcai YANG, Binglong WANG, et al. Journal of Shanghai Tiedao University Vol. 21(2000), pp.100-105, in Chinese.

Google Scholar

[11] Jianhang LIU, Xueyuan HOU: The Handbook of Foundation Engineering(China Architecture & Building Press, Beijing 1997), in Chinese.

Google Scholar