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The influence of buildings on potent...

Rollins, Kyle Morris.

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The influence of buildings on potential liquefaction damage.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The influence of buildings on potential liquefaction damage./
作者:	Rollins, Kyle Morris.
面頁冊數:	385 p.
附註:	Source: Dissertation Abstracts International, Volume: 49-05, Section: B, page: 1922.
Contained By:	Dissertation Abstracts International49-05B.
標題:	Geotechnology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8814040

The influence of buildings on potential liquefaction damage.
Rollins, Kyle Morris.

The influence of buildings on potential liquefaction damage. - 385 p.

Source: Dissertation Abstracts International, Volume: 49-05, Section: B, page: 1922.

Thesis (Ph.D.)--University of California, Berkeley, 1987.

The potential for liquefaction in soil near a building is generally determined by treating the soil as if it were in the free-field under level ground conditions. However, a review of field case histories, model test results, and a limited number of numerical analyses indicates that the potential for pore pressure generation near a building may be substantially different than in the free-field. In order to evaluate the appropriateness of a free-field analysis a number of building types on sands at various relative densities were analyzed. The analyses were patterned after the Seed-Lee-Idriss procedure, which is frequently used in liquefaction analyses for dams. Consideration was also given to bearing capacity failure, settlement, and pore pressure redistribution following the earthquake shaking.Subjects--Topical Terms:

1018558
Geotechnology.

The influence of buildings on potential liquefaction damage.
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100 1 $a Rollins, Kyle Morris. $3 1901629
245 1 4 $a The influence of buildings on potential liquefaction damage.
300 $a 385 p.
500 $a Source: Dissertation Abstracts International, Volume: 49-05, Section: B, page: 1922.
500 $a Chairman: H. Bolton Seed.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 1987.
520 $a The potential for liquefaction in soil near a building is generally determined by treating the soil as if it were in the free-field under level ground conditions. However, a review of field case histories, model test results, and a limited number of numerical analyses indicates that the potential for pore pressure generation near a building may be substantially different than in the free-field. In order to evaluate the appropriateness of a free-field analysis a number of building types on sands at various relative densities were analyzed. The analyses were patterned after the Seed-Lee-Idriss procedure, which is frequently used in liquefaction analyses for dams. Consideration was also given to bearing capacity failure, settlement, and pore pressure redistribution following the earthquake shaking.
520 $a Based on the results of numerical studies involving ten story buildings on mat foundations and four story buildings on continuous footings, it appears to be very difficult to find any case where liquefaction is more likely underneath a building than in the free-field. Soil structure interaction generally decreased the likelihood of liquefaction beneath a building. A free-field analysis will therefore likely be conservative and in some cases overly-conservative. The presence of the buildings on 55% relative density sand prevented liquefaction from occurring underneath the building and prevented subsequent damage for acceleration levels of 0.20 to 0.30g for M = 6.75 earthquakes which caused liquefaction to large depths in the free-field. The beneficial influence of a building on the potential for liquefaction damage decreases as the sand relative density decreases. The presence of a building on 35% relative density sand may decrease pore pressures beneath the building for low acceleration levels but the potential for damage may still remain high.
520 $a For overcompensated buildings a free-field analysis was found to provide unsafe estimates of the potential for liquefaction damage near a building. Liquefaction below the building took place to greater depth than in the free-field. For buildings on D $\ sb{\rm r} $ = 55% sands this liquefaction would result in large settlements. For buildings on D $\ sb{\rm r} $ = 35% sands the liquefied zone could surround the building and lead to uplift of the structure.
590 $a School code: 0028.
650 4 $a Geotechnology. $3 1018558
650 4 $a Engineering, Civil. $3 783781
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710 2 0 $a University of California, Berkeley. $3 687832
773 0 $t Dissertation Abstracts International $g 49-05B.
790 1 0 $a Seed, H. Bolton, $e advisor
790 $a 0028
791 $a Ph.D.
792 $a 1987
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8814040