粘土結核 的英文怎麼說
中文拼音 [niántǔjiēhé]
粘土結核
英文
imatrastein-
The results showed that the creep coefficients in cfrp - confined concrete columns and in epoxy - coated concrete columns are almost same, both are less than that in plain concrete columns on the same other conditions but surface treatment, which demonstrates that the creep reduction in cfrp - confined concrete columns is due to the existence of epoxy coating not of cfrp sheet. furthermore, the physical apperence and dimension have litter effect on the creep behavior of cfrp - confined and epoxy - coated concrete columns
結果表明:其他條件相同時， cfrp約束混凝土柱與塗膠混凝土柱的徐變基本一致，比素混凝土柱徐變小29 . 0 %和26 . 9 % 。 cfrp約束混凝土柱的徐變減小是由於粘貼cfrp布時的膠層所致而非核心混凝土的約束效應。 cfrp約束或表面塗膠的混凝土柱的外形、尺寸及體表比對其徐變的影響很小。( 2 ) based on deterioration model of owerage bond stress of beam reinforcement accounting for effect of axial compression ration and number of displacement loops, and stress - strain relationship of the concrete in the joint core accounting for effects of both softening and confinement, the modified compression field theory was employed to simulate behavior of the joint core under loading reversals. analysis by means of the program jap on the tested specimens in this paper and those obtained from other researchers produced consistent results
根據本文建立的考慮軸壓比和位移循環次數影響的梁筋平均粘結應力退化模型和考慮軟化效應、約束效應的核心區混凝土應力應變關系，通過在試驗中得出的節點核心區混凝土、箍筋、節點正面、背面柱筋在反復荷載下的受力特點，利用斜壓場理論模擬節點核心區在反復受力過程中的受力狀態。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。
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