000018414 001__ 18414
000018414 005__ 20170118182221.0
000018414 04107 $$aeng
000018414 046__ $$k2017-01-09
000018414 100__ $$aYamamoto, Haruyuki
000018414 24500 $$aBehavior of Small Building Foundations With Raft and Box Confinement During Liquefaction By Using Cyclic Simple Shear Test in 1g

000018414 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018414 260__ $$b
000018414 506__ $$arestricted
000018414 520__ $$2eng$$aLiquefaction occurs due to a cyclic shear stress by earthquake and buildings are damaged such as settlement or inclination. The confining ground under the building is one of the methods for preventing liquefaction in the ground, because it can restrain the shear deformation. In this study, cyclic simple shear test was conducted in 1-G for proposing the countermeasure method using a raft foundation with casing. The dispersing time of excess pore water pressure is the most important in this experiment. To decide more suitable coefficient of permeability of the model ground for this experiment, falling head permeability test was performed to find the coefficient by changing some mixing ratio of water with Na-CMC or glycerin. After the permeability test, simple shear test was conducted with some models. There are the follow conclusions by the result of this study. (1) The raft foundation with casing can reduce settlement and inclination of building. (2) Peak value of excess pore water pressure can’t be decreased in the casing. (3) The aqueous solution of Na-CMC is better to conduct simple shear test in 1-G for adjusting the time of dispersing excess pore water pressure than the aqueous solution of glycerin.

000018414 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018414 653__ $$aLiquefaction, Countermeasure method, Small building, Raft foundation, Simple shear test

000018414 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018414 720__ $$aYamamoto, Haruyuki$$iKojima, Rihito$$iKimata, Tsuyoshi
000018414 8560_ $$ffischerc@itam.cas.cz
000018414 8564_ $$s780211$$uhttps://invenio.itam.cas.cz/record/18414/files/1409.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1409.
000018414 962__ $$r16048
000018414 980__ $$aPAPER