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Critical Appraisal of Shear Strength Parameters of in situ Subsoil by SPT
https://orcid.org/http://orcid.org/0000-0002-3724-9454
The railway project stretches over long distances. The occurrence and distribution of soil stratum varies from location to location. Thus, the main objective of subsurface exploration in the case of such projects is to determine suitability of variable soil stratum for substructure construction. Adequate guidelines for subsurface exploration are available in Indian Standard (IS/IRS/IRC) codes (IS1892-1979, IS2131-1981, IS6403-1981, IS 2720-(Part-II) 1993, IS 2720 (Part-IV) 1985, IS 2720 (Part-V) 1985, IS 2720 (Part VII) 1980). However, before the design of substructure, it is necessary to analyze geotechnical properties from detailed observations recorded during exploration, interdependent available geotechnical properties in the absence of laboratory data and indicative properties available in the standard literature and codes. This paper illustrates the studies carried out to interpret the geotechnical properties to be considered in the design of foundation of bridges. The effect of different soil properties such as consistency limits, particle size analysis and SPT N values on shear parameters is presented here. Most of the geotechnical properties of soil influence each other. The shear strength parameters are mainly considered for bearing capacity calculations and pile capacity calculations. Thus, validity of different soil properties and its correlations to obtain shear strength parameters are compared with available laboratory test results. For the design of structure, the properties shall be considered based on subsurface exploration data, laboratory testing, experience and available literature for each structure.
Critical Appraisal of Shear Strength Parameters of in situ Subsoil by SPT
https://orcid.org/http://orcid.org/0000-0002-3724-9454
The railway project stretches over long distances. The occurrence and distribution of soil stratum varies from location to location. Thus, the main objective of subsurface exploration in the case of such projects is to determine suitability of variable soil stratum for substructure construction. Adequate guidelines for subsurface exploration are available in Indian Standard (IS/IRS/IRC) codes (IS1892-1979, IS2131-1981, IS6403-1981, IS 2720-(Part-II) 1993, IS 2720 (Part-IV) 1985, IS 2720 (Part-V) 1985, IS 2720 (Part VII) 1980). However, before the design of substructure, it is necessary to analyze geotechnical properties from detailed observations recorded during exploration, interdependent available geotechnical properties in the absence of laboratory data and indicative properties available in the standard literature and codes. This paper illustrates the studies carried out to interpret the geotechnical properties to be considered in the design of foundation of bridges. The effect of different soil properties such as consistency limits, particle size analysis and SPT N values on shear parameters is presented here. Most of the geotechnical properties of soil influence each other. The shear strength parameters are mainly considered for bearing capacity calculations and pile capacity calculations. Thus, validity of different soil properties and its correlations to obtain shear strength parameters are compared with available laboratory test results. For the design of structure, the properties shall be considered based on subsurface exploration data, laboratory testing, experience and available literature for each structure.
Critical Appraisal of Shear Strength Parameters of in situ Subsoil by SPT
https://orcid.org/http://orcid.org/0000-0002-3724-9454
The railway project stretches over long distances. The occurrence and distribution of soil stratum varies from location to location. Thus, the main objective of subsurface exploration in the case of such projects is to determine suitability of variable soil stratum for substructure construction. Adequate guidelines for subsurface exploration are available in Indian Standard (IS/IRS/IRC) codes (IS1892-1979, IS2131-1981, IS6403-1981, IS 2720-(Part-II) 1993, IS 2720 (Part-IV) 1985, IS 2720 (Part-V) 1985, IS 2720 (Part VII) 1980). However, before the design of substructure, it is necessary to analyze geotechnical properties from detailed observations recorded during exploration, interdependent available geotechnical properties in the absence of laboratory data and indicative properties available in the standard literature and codes. This paper illustrates the studies carried out to interpret the geotechnical properties to be considered in the design of foundation of bridges. The effect of different soil properties such as consistency limits, particle size analysis and SPT N values on shear parameters is presented here. Most of the geotechnical properties of soil influence each other. The shear strength parameters are mainly considered for bearing capacity calculations and pile capacity calculations. Thus, validity of different soil properties and its correlations to obtain shear strength parameters are compared with available laboratory test results. For the design of structure, the properties shall be considered based on subsurface exploration data, laboratory testing, experience and available literature for each structure.
Critical Appraisal of Shear Strength Parameters of in situ Subsoil by SPT
Indian Geotech J
Mulagala, Lakshmi (author) / Kadam, Anil Ravaji (author)
Indian Geotechnical Journal ; 50 ; 261-266
2020-04-01
6 pages
Article (Journal)
Electronic Resource
English
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