基坑支护结构上水土压力的分算与合算.pdfVIP

22 3 Vol.22 No.3 2000 5 Chinese Journal of Geotechnical ngineering May, 2000 Estimating the water and earth pressures on the supporting structure around a foundation pit separately and together 李广信 (, , 100084) [ ] 1999 4 , , , , , ,, ,, TU 432 A 1000- 4548(2000) 03- 0348- 05 , , 1941, , , Li Guangx in ( Institute of Geotechnical ngineering, Tsinghua University, Beijing, 100084) Abstract In this paper the reason why measured stress on supporting structure is generally much less than that calculated with classic earth pres sure theories is explored. The method of estimating water and earth pressures on supporting structure separately andtogether which has become an attention and discussion focus in field of geotechnical engineering is analyzed. It is indictedthat the method of estimating water and earth pressures together is inconsistent with the effective stressprincipal, but there might be some microscopical ground. Therefore it is an important problem de serving of further research. Key words supporting structure of foundation pit,earth pressure, water pressure,estimating water and earth pressures separately,estimating water and earth pressurestogether 1 2 , , , [ 1,2] , : 2. 1 , , ; ( 1) , ,