long tangent 中文意思是什麼
long tangent
解釋
長夾直線-
If asphalt concrete specimen is in stabilization by exert confining stress before the static triaxial test, it is then found that under the condition that time is long enough, the volume of the specimen will shorten gradually and stable around a fixed value, and the amount of compression is essentially the half of the volume of void itself. it is also found that in stabilization by exert confining stress the linear phrase will be shorten in the figure of the static triaxial test of specimen, while the initial tangent modulus will be augment. 3
在進行靜三軸試驗以前先對瀝青混凝土試件進行圍壓穩定，發現在時間足夠長的條件下，試件的體積會逐漸縮小，並逐漸穩定在某一定值，其壓縮量基本上為其本身孔隙體積的一半；經圍壓穩定后的試件靜三軸試驗曲線上的線性階段明顯縮短，而初始切線模量增大。 -
After the evaluation of the three parameters in the proposed creep model, which is based on the large numbers of experimental measurements of concrete creep, the influential regularities of concrete filled steel tube columns under long - term loading are investigated. by dispersing time, the method of tangent modulus is adopted to study the relation of creep strain and load time. in the end, this paper took cft specimens with representative geometry and sectional dimensions as examples and adopted the proposed method as an approach to investigate the influencing regularities of many factors, which include the ratio of long - term load to strength, the slenderness ratio, the eccentricity ratio, and the intensity grade of concrete, on cft structures
在對鋼管混凝土構件長期荷載效應的分析中，本文基於三維粘彈性理論，採用三參數粘彈性模型，提出了核心混凝土徐變的三維有限元分析理論，在總結過去大量關于混凝土徐變試驗實測結果的基礎上擬合了模型中的三個參數，並成功將其應用於鋼管混凝土徐變的三維分析計算中，得到徐變與持荷時間的關系，以典型截面形式的圓鋼管混凝土軸壓、偏壓構件為例，對軸壓比、長細比、含鋼率、偏心率以及核心混凝土等級分別進行了大量的參數分析和實驗對比研究，結果表明二者符合較好。 -
As for the limit bearing capacity formula of the concrete filled steel tube long column subjected to axial compress, we lead to the tangent modulus and the conception of metal material. the high strength core concrete is divided into two kinds of situations : single axial loading conditions and triaxial loading conditions
在推導鋼管混凝土軸心受壓長柱臨界承載力公式時，論文利用材料的切線模量，分別推導了鋼材和混凝土的切線模量公式。對于混凝土的切線模量，本文分成單向受壓和三向受壓兩種情況考慮，並分別得出切線模量公式。
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