For some conditions, in particular

For some conditions, in particular for relatively flat slopes ~inclined
at less than about 10°!, permanent displacements are not
strongly influenced by the use of a single-component input motion
or by the orientation of that motion. For steeper slopes in
frictional materials, however, the single-component approach appears
to systematically underpredict slope displacement by an
amount that increases with increasing slope inclination. For
steeper slopes in cohesive soils, the application of a horizontal
recorded motion parallel to the slope tends to systematically overpredict
displacement, also by an amount that increases with increasing
slope angle. The lateral component ~parallel to the strike
of the slope! has no effect on cohesive slopes or on symmetric
failure surfaces in frictional slopes, but its consideration can result
in somewhat lower computed displacements for asymmetric
failure surfaces in frictional slopes.
The true two-dimensional and three-dimensional analyses are
more capable of predicting the permanent displacement of sliding
blocks subjected to actual three-dimensional earthquake motions
than the pseudotangential and true tangential approximations
commonly used in practice. Their response, however, depends on
the details ~amplitudes, frequency contents, durations, and phasing!
of all three components of the input motion. Given the approximate
nature of the sliding block concept, it might appear that
such details are not significant. However the value of the index of
permanent displacement produced by a sliding block analysis will
increase with increasing degree of accuracy with which the
block’s response to actual earthquake motions is modeled. For
most slope stability evaluations, a suite of motions with specified
amplitude, frequency content, and durations is identified and used
as input to seismic stability analyses.

結果 (繁體中文) 1:

對於一些條件下，特別是為相對平坦的斜坡 ~ 傾斜在小於大約 10 ° ！，永久位移不是利用單組分輸入運動的強烈影響或由該議案的方向。為在陡峭的斜坡摩擦材料，然而，單組分方法出現要系統地低估了邊坡位移由隨邊坡傾角增加而增加的數額。為陡峭的斜坡，在粘性土，水準中的應用記錄的運動平行于邊坡傾向于系統地高估了位移，亦隨而增加金額邊坡角。側向分力 ~ 平行于罷工邊坡 ！有沒有凝聚力的山坡上或對稱的影響滑動面摩擦的斜坡，但其審議可以導致在有些降低計算的位移的不對稱滑動面摩擦的斜坡。真正的二維和三維分析更能夠預測的滑動的永久變形塊遭受實際三維地震運動比的 pseudotangential 和真正的切向逼近在實踐中常用。然而，取決於他們的反應，詳細資訊 ~ 振幅、 頻率內容、 工期和逐步 ！所有的三個組成部分的輸入運動。給出的近似自然的滑動塊的概念，可能看起來such details are not significant. However the value of the index ofpermanent displacement produced by a sliding block analysis willincrease with increasing degree of accuracy with which theblock’s response to actual earthquake motions is modeled. Formost slope stability evaluations, a suite of motions with specifiedamplitude, frequency content, and durations is identified and usedas input to seismic stability analyses.

結果 (繁體中文) 2:

對於某些條件下，特別是對於相對平坦的斜坡〜傾斜
在小於約10°！永久位移不
強烈通過使用單組分輸入運動的影響，
或由該運動的方向。對於在陡峭的斜坡上
的摩擦材料，但是，單組分方法似乎
由一個系統underpredict斜率位移
與增加斜率傾角增加量。對於
粘性土坡度較陡，水平應用
錄製的動態平行斜率趨於系統性高估了
位移，還與增加的量增加
坡度。橫向部件〜平行罷工
坡！有粘性斜坡或對稱沒有作用
在摩擦斜坡破壞表面，但可能會導致其對
在用於非對稱稍低計算位移
摩擦斜坡破壞表面。
真正的二維和三維分析是
更能夠預測永久的滑動位移
進行實際的三維地震運動塊
比pseudotangential和真正的切向近似
在實踐中通常使用的。他們的反應，但是，要看
細節〜幅度，頻率成分，持續時間和階段！
輸入運動的三個組成部分。給定的近似
的滑動塊的概念的性質，它可能出現的
這樣的細節並不顯著。然而的指數值
由滑動塊的分析將產生永久位移
與該準確度的增加而增加
塊的實際震動響應被建模。對於
大多數邊坡穩定評估，與指定的動作的一組
幅度，頻率內容，和持續時間被識別，並且使用
作為輸入到地震穩定性分析。