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Abstract The foundation pits，as their complications in the respects of geotechnical engineering and particularities in the construction，can not be designed as the aboveground structures which are accomplished in one step. They should be designed in a dynamic manner and constructed in an informatization way on the basis of working conditions and monitoring informations in the process of foundation pit construction. Considering many aspects such as geotechnical parameters，calculation of water and soil pressures，calculation model of retaining structure，soft soil rheology and time-space effect，the complication of geotechnical engineering and the particularity of the foundation pit engineering are deeply analyzed；and the common reasons to several accidents arising from the foundation pit construction are anatomized. Meanwhile，several issues which should be concerned in the design，construction and monitoring of the foundation pit engineering are proposed.
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Received: 20 June 2012
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2012, Vol. 31 
