expression n. 1.表現(xiàn),表示,表達(dá)。 2.詞句;語句,措辭,說法。 3.表情,臉色,態(tài)度;腔調(diào),聲調(diào)。 4.【數(shù)學(xué)】式,符號(hào)。 5.(油的)榨出,壓榨。 6.【生物學(xué)】表現(xiàn)度。 emotional expression 表情。 a happy expression 妙言。 an odd expression 怪話。 the expression of the eye 眼睛表情,眼色。 a smiling expression 笑臉。 beyond [past] expression 形容不出,無法表達(dá)。 find expression (in) (在…中)表現(xiàn)出來…,表現(xiàn)在…。 give expression to 表達(dá),反映(give the fullest expression to their initiative 充分表現(xiàn)他們的積極性)。 expression mark 【音樂】表示感情色彩的符號(hào)。 adj. -al 表現(xiàn)的;表情的。 n. -ism 【美術(shù)】表現(xiàn)主義;表現(xiàn)派。 -ist 1.n. 【美術(shù)】表現(xiàn)主義者,表現(xiàn)派。 2. 表現(xiàn)派的〔亦作 expressionistic〕。 adj. -less 缺乏表情的,呆板的。
Creep analysis methods of high-rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions . in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition . the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented . this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high-rise buildings and large span buildings on the basis of conceptual design 基于現(xiàn)有的試驗(yàn)資料,高層及大跨度民用建筑的徐變分析只能參照橋梁結(jié)構(gòu)中的徐變系數(shù)方法或水工結(jié)構(gòu)中的徐變度方法進(jìn)行.從徐變系數(shù)的定義出發(fā),利用積分中值定理和疊加原理,推導(dǎo)并修正了加載齡期與起算齡期不同時(shí)徐變收縮應(yīng)變?cè)隽康谋磉_(dá)式,對(duì)比了應(yīng)用徐變系數(shù)分析徐變的有限元法和應(yīng)用徐變度分析徐變的初應(yīng)變法在效率和精度上的差別,并建議應(yīng)從概念設(shè)計(jì)的角度出發(fā),采用徐變度的初應(yīng)變法來估算徐變對(duì)高層及大跨度民用建筑的影響
Abstract : creep analysis methods of high-rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions . in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition . the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented . this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high-rise buildings and large span buildings on the basis of conceptual design 文摘:基于現(xiàn)有的試驗(yàn)資料,高層及大跨度民用建筑的徐變分析只能參照橋梁結(jié)構(gòu)中的徐變系數(shù)方法或水工結(jié)構(gòu)中的徐變度方法進(jìn)行.從徐變系數(shù)的定義出發(fā),利用積分中值定理和疊加原理,推導(dǎo)并修正了加載齡期與起算齡期不同時(shí)徐變收縮應(yīng)變?cè)隽康谋磉_(dá)式,對(duì)比了應(yīng)用徐變系數(shù)分析徐變的有限元法和應(yīng)用徐變度分析徐變的初應(yīng)變法在效率和精度上的差別,并建議應(yīng)從概念設(shè)計(jì)的角度出發(fā),采用徐變度的初應(yīng)變法來估算徐變對(duì)高層及大跨度民用建筑的影響