Borings on MIT Campus Near Westgate II. Optimum Seismic Protection for New Building Construction in Eastern Metropolitan Areas

摘要

The American Drilling and Boring Company installed during the month of February, 1972, four borings on the MIT campus for the Boston Quake Study Project. There were several reasons for making these borings. One reason was to provide open holes in which seismic tests could be conducted to measure in situ the shear wave velocity of the Boston Blue Clay. Another reason was to provide the Boston Quake Study Project with high quality undisturbed samples of the Boston Blue Clay for laboratory testing to determine the shear wave velocity using MIT's Hardin Oscillator and to compare the results with those obtained in the field. These borings wre also used to ascertain which typical profile was located at this site. The installation of these borings is described. Results of these borings are shown graphically and a comparison with other borings in the area is made.