Settlement of a High Embankment and Overpass Structures in Ottawa

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur.Canadian Geotechnical Journal, 6, 1, pp. 33-45, 1969-01-01 Settlement of a high embankment and overpass structures in Ottawa Burn, K. N. Settle~nent observations have been conducted over a 5-year period on a 20-fthigh earth embankment and 2 highway overpass structures founded on spread footings over a thick deposit of Leda clay. The applied strcsses were considerably less than the overconsolidation pressure of the clay. In the five years since construction, settlements of approximately 12 cin have occurred, of which about 4 cm occurred in~n~ediately. The obscrved settlcmcnts are conlpared with scttlemcnt predictions on the basis of various types of laboratory tests. The ol>servations indicate that significant settlements occur on a long-term basis and can be attributed to a slow yielding of the clay structure. Piezometers failed to detect any escess pore water pressure due to slow process of consolidation.

A Deviatoric Softening Model to Simulate Compressibility Properties of Soft Clays

“…Building in Ottawa (Crawford 1953, Crawford andBozozuk 1990), embankments of Ottawa Queensway (Burn andHamiltion 1968, Burn 1969) and so forth.…”

A Deviatoric Softening Model to Simulate Compressibility Properties of Soft Clays

“…Creep strains contain both volumetric and deviatoric strain components and can be often observed in undisturbed over-consolidated Champlain Sea clay samples (Burn 1969, Mitchell 1970.…”

Study on the Mechanical Properties of Flexible Prefabricated Highway Structural Systems considering the Effect of Two-Way Fluid-Structure Interaction

“…In the past period, scholars at home and abroad have carried out a large number of model experiments [1][2][3][4][5][6][7][8] and numerical simulations [9][10][11][12][13][14][15][16][17] on the rainwater infltration of embankment soil, most of which are based on the traditional research of uniform penetration of embankment soil surface and slope and constant rainfall intensity, studying the safety of embankment slope and the characteristics of rainwater seepage, and mainly focusing on preventing serious collapse accidents on embankments. However, the uneven settlement of the embankment caused by rainfall [18][19][20][21][22][23][24] is a more common form of destruction in the actual use process. Although this destruction will not directly lead to catastrophic consequences, it will lead to a series of diseases such as cracking and bulging of the road surface, afecting the normal use of the road, so the research and prevention of uneven settlement of the road surface are equally important.…”