Civil Engineering Reference
In-Depth Information
FIGURE 8.5
The building suffered a liquefaction-induced
punching shear failure during the Izmit earthquake in Turkey on
August 17, 1999. (
Photograph from the Izmit Collection, EERC,
University of California, Berkeley.
)
pressure should not be increased for the earthquake analyses. In fact, the allowable bearing
pressure may actually have to be reduced to account for the weakening of the soil during
the earthquake. The remainder of this chapter deals with the determination of the bearing
capacity of soils that are weakened by seismic shaking.
8.2 BEARING CAPACITY ANALYSES FOR
LIQUEFIED SOIL
8.2.1 Introduction
Section 8.2 deals with the bearing capacity of foundations underlain by liquefied soil. The
liquefaction analysis presented in Chap. 6 can be used to determine those soil layers that
will liquefy during the design earthquake.
