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902227 Dynamic cone, wave equation and microcomputers: the Mexican experience Ellstein, R A Proc 1st International Symposium on Penetration Testing, ISOPT-I, Orlando,20-24 March 1988 V1, P341-345. Rotterdam: A A Balkema, 1988 Dynamic penetration test results may be interpreted by considering the rod assembly as a pile and analysing using the wave equation. This method has been used since 1985 for in situ estimation of bearing capacity of the hard layer in Mexico City. Results are in good agreement with direct measurements. Shear strength parameters of hard to sample soils whose bearing capacity increases linearly with depth can also be determined in this manner. Promising results are also seen from other sites.
Suggested testing methods and standards 902228 Standard penetration test (SPT): international reference test procedure Decourt, L; Muromachi, T; Nixon, I K; Schmertmann, J H; Thorburn, S; Zoikov, E Proc 1st International Symposium on Penetration Testing, ISOPT-I, Orlando,20-24 March 1988 VI, P3-26. Rotterdam: A A Balkema, 1988 Recommendations of the ISSMFE Technical Committee on Penetration Testing are reported. The objectives of the document are first considered. The origin of the SPT is next described. Standardisation to ASTM D1586, standards in other countries, and differences between standards used and the proposed reference procedure are discussed. Developments of the method in practice and research, and general and specific applications of the SPT are examined, together with its use in member countries. An international reference test procedure and calibration methods are proposed.
902229 Cone penetration test (CPT): international reference test procedure De Beer, E E; Goelen, E; Heynen, W J; Joustra, K Proc Ist International Symposium on Penetration Testing, ISOPT-I, Orlando,20-24 March 1988 V1, P27-51. Rotterdam: A A Balkema, 1988 Recommendations of the ISSMFE Technical Committee on Penetration Testing are reported. The objectives of the document are stated and current practice reviewed. A reference test procedure is proposed and described, including a reference test penetrometer. Precision, calibration, checks on equipment and procedure and reporting of results are discussed. Finally, deviations from the reference test and their effects on results are considered.
902230 Dynamic probing: international reference test procedure Stefanoff, G; Sanglerat, G; Bergdahl, U; Melzer, K J Proc Ist International Symposium on Penetration Testing, ISOPT-I, Orlando,20-24 March 1988 VI, t)53-70. Rotterdam: A A Balkema, 1988 Recommendations of the ISSMFE Technical Committee on Penetration Testing are reported. The objectives of the document are first stated. Present practices in dynamic probing are reviewed, including equipment, testing, measurement, and
reporting and interpretation of results. Selection of the international reference test procedure is discussed, with the previously reviewed points taken into account.
902231 Weight sounding test (WST): international reference test procedure Bergdahl, U; Broms, B B; Muromachi, T Proc 1st International Symposium on Penetration Testing, ISOPT-I, Orlando,20-24 March 1988 VI, P71-90. Rotterdam: A A Balkema, 1988 Recommendations of the ISSMFE Technical Committee on Penetration Testing are reported. Development of and current practice of the WST are reviewed,including equipment, factors affecting penetration resistance, and its use to measure density and compressibility. Comparisons are made between the WST and other penetration methods in applications to soil exploration,foundations and compaction control. An international reference test procedure is proposed.
Monitoring rock and soil mass performance See also: 902145
902232 Geotechnical monitoring systems for embankment dams Dunnicliff, J lnt Water Power Dam Constr V41, Nil, Nov 1989, P12-16 The principal geotechnical questions of what needs to be measured, why, and by what means are first examined. Monitoring of initial site conditions, and during construction, first filling, and drawdown is discussed. Measurements and instrumentation for long term monitoring of overall condition, leakage, relief wells, seismic events, pore pressure, surface and internal movement, and interface stresses are considered. Guidelines for monitoring programs and layout of instrumentation are presented.
902233 Software for integrated monitoring systems Goguel, B; Ozanam, 0 lnt Water Power Dam Constr V41, NIl, Nov 1989, P16-19 An expert system based on the CONDORA program has been developed for statistical analysis of instrumentation readings, to assist in evaluation of structural conditions and to follow their evolution. It can be attached to manual or automated data acquisition systems, in the latter case allowing real time analysis, which can be of great value under emergency conditions. Its application to the Danjiankon concrete gravity dam in China is described. 902234 Telemeter for rock pressure and forecasting for the weighting of hard roof in the coal face
Deng Tieli; Lin Zlyang; Ma Junting; Zhao Zhenguan; Huang Ziwei Proc International Symposium on Modern Mining Technology, Taian, October 1988 P262-270. Publ Taian: Shandong Institute of Mining and Technology, 1988 Two designs of remote instrumentation for monitoring roof and support behaviour in underground mines are described. The first uses photoelectric displacement sensors, the second vibrating wire instruments. Their use in forecasting first and periodic roof weighting is illustrated and discussed.
© 1990 Pergamon Press pie. Reproduction not permitted