比徐變 的英文怎麼說
中文拼音 [bǐxúbiàn]
比徐變
英文
specific creep-
Comparing with the same category overseas jointless bridges, the new type bridge has more reasonable structure, more simple and convenient construction, and better use effect etc. the main work in this paper is described as follows : ( 1 ) this paper introduces phylogeny and reseach survey of the joints bridge inland and abroad, and a new jointless bridge structure ? new type semi - integral abutment bridge is based on these, which characteristic of own structure and setting of primary component are expatiated. ( 2 ) this paper analyses influence of temperature effect, creep, shrinkage and circumambient soil of run - on slab on the new type structure, and analyses the forcing performance of beam, abutment and run - on slab of the new type semi - integral abutment bridge, and constrast to the same category joints bridges
本文主要做了以下工作: （ 1 ）介紹了無縫橋梁在國內外的發展歷史、研究概況，並在此基礎上提出了一種新的無縫橋梁結構形式-新型半整體式無縫橋梁，闡述了它特有的結構形式以及主要構件的設置; （ 2 ）分析了溫度效應、徐變和收縮以及搭板周圍土體對這種新型結構的影響，對新型半整體式無縫橋主梁、橋臺以及搭板進行了受力性能分析，並和同類無縫橋梁進行了對比分析。This result has practical significance. in this paper ' s theoretical section, base on current shrinkage and creep calculational methods, analysis to the experiment project and tall building structure examples were made, and then the influence of shrinkage and creep to structure stress was put into discussion ; moreover, an fea program was compi led to calculate shrinkage and creep strain considering construction process, and through a tall building instance, the influence to tall frame structure stress was analyzed
本文的理論部分在現有收縮徐變計算方法的基礎上對本試驗工程和高層建築結構進行了算例分析，通過與彈性計算值的對比，討論了收縮徐變對結構內力的影響，以及計算收縮徐變時是否考慮鋼筋和施工過程對結果的影響；本文還編制了考慮施工過程收縮徐變的有限元程序，並進行了算例分析。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
基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響In chapter four, on the bases of the analyzing of the theory of concrete creep, a program for creep analysis of cfst arch bridge is compiled, the program results are compared with the experimental data, which proved the programming procedure is correct and finding some creep rules of cfst
第四章在論述混凝土的徐變理論基礎上，推導出了鋼管混凝土徐變應變的理論計算公式，並編制了鋼管混凝土拱橋徐變分析的程序，將徐變試驗觀測結果和程序計算值進行對比分析，得出鋼管混凝土徐變的一些基本規律。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:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Abstract : because the water - binder ratio of both high strength concrete and high performance concrete are very low, it bring about the following consequences such as : 1, the grade of cement strength would be a negligible symbol 2, the effectiveness of mineral admixture would be considerably improved 3, the high cohesion of the mixture and concrete " s shrinkage and creep would be changed etc. all these consequences should be well deliberated by the construction circles
文摘:高強混凝土和高性能混凝土因其水膠比都很低，給配製與施工帶來如下現象：水泥標號的「標志」作用淡化，礦物摻合料的作用顯著改善，拌合物的高粘聚性、混凝土的收縮和徐變性能的變化等，這些現象都值得施工人員注意。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。Calculating and analyze the compression bending strength according to the method of reinforced co ncrete structure design code and " the modified simple superposition method ", the distribution of axial load is obtained, then, the influence of creep is considered and the formulation of distribution of axial load between reinforced concrete and steel is proposed. and steel is proposed
運用現行混凝土結構設計規范和改進后的簡單疊加方法分別計算試件的壓彎承載力，通過對比分析，推得了src柱的軸力分配，然後在考慮了徐變系數的影響后，對空腹式鋼骨混凝土柱軸壓比限值提出建議。Therefore, the simulation calculation and comparison on the temperature field and the stress field of temperature creeping for many temperature control schemes are made with the application of the 3 - d finite element simulative analysis software, and then a set of effective measures for comprehensive temperature control is optimized and two temperature control schemes are put forward for the application to the project ; with which the problem of temperature and crack control of the anchorage block during the construction of sangequan siphon project is solved satisfactorily
為此，應用三維有限元溫度場和溫度徐變應力場模擬分析軟體進行了多方案的模擬計算和比較，優選了一套行之有效的綜合溫控防裂措施，提出了兩個溫控方案並應用於該工程，比較好地解決了三個泉倒虹吸進口鎮墩結構的溫控防裂問題。The deflection ' s computation is complicacy when considered the agents included concrete creep. so we should compare the calculation results with design date before construction to find the problem. we should continually adjust the elevation date in construction control to reduce the error
考慮徐變后結構的撓度計算是極其復雜的，因為它包含了包括混凝土徐變在內的許多因素，而且即使計算出預拱度，在施工之前也應將計算數據並與設計值比較，從而發現問題。On the basis of relative researches in the world, according to the study status of steel - concrete composite slab, which would be widely used in modern bridge, modified equivalent inflexibility of steel - concrete composite slab was deduced by use of conversion section principle in this paper ; based in this, this paper put forwards the theory of ultimate flexural capacity of steel - concrete composite slab in consideration of slip effect, and introduces the practical simplified method for calculating flexural deformation of steel - concrete composite slab in consideration of the effect of steel studs and welded wire, and conclude that the methods in this paper is veracious and reliable, comparing with the traditional calculating mode ; morever, this paper put forwards the calculating theory and program of the effect analysis of creep and shrinkage to steel - concrete composite slab, using conversion elastic modulus principle, and testifies that the theory is right and the program is reliable and practical
本文在國內外研究成果的基礎上，針對壓型鋼板與混凝土組合板結構在現代橋梁建設中廣泛應用前景和研究現狀，利用換算截面法導出了壓型鋼板與混凝土組合板結構的修正等效慣性矩；在此基礎上，又推出了考慮壓型鋼板與混凝土之間的相對粘結滑移影響的壓型鋼板與混凝土組合板結構極限抗彎承載能力計算理論，並介紹了考慮栓釘、聯結件影響的壓型鋼板與混凝土組合板結構簡化實用撓曲變形計算公式，而且通過與傳統計算理論的分析比較，表明本文提出的計算理論公式的準確可靠性；此外，採用換算彈性模量比法著重提出了壓型鋼板與混凝土組合板結構的徐變、收縮效應分析的計算理論和程序，並通過實例分析計算證明了理論的正確性、程序的可靠性和實用性。In the article there is also an analysis about the influence to the complete status of the prestressed concrete cable stayed bridge of such factors as the stiffness change of the girder and the deflection of cables and the concrete creep and the temperature change. this must be useful to engineer to take a reasonable stress limitation in determining the reasonable completed status
本文還採取對比分析計算的方法，對主梁剛度變化、拉索垂度、混凝土徐變及溫度變化等因素的影響進行了分析，並指出了它們的影響程度，有助於工程師們在確定成橋狀態時合理地選取控制條件。The results showed that the long - term deformations of beams strengthened with cfrp laminates are less than the deformations of plain beams by 6 % 16. 5 %. on the same long - term load, with the process of strengthening changed, the creep deformations of strengthed beams were different
結果表明: cfrp布加固梁徐變比普通混凝土梁減少6 % 16 . 5 % ，並且相同的長期荷載作用下，加固歷程不同，其徐變變形也不同。Using the time dependent finite element method of age - adjusted effective modulus, the author calculates the deflection which is induced by shrinkage and creep in a continuous rigid frame bridge of urban rail transit, and further compares with the site test result, the conclusion is very meaningful
摘要採用按齡期調整有效模量的時變分析有限元法，對城市軌道交通預應力混凝土連續剛構橋的收縮徐變變形進行了理論計算，並與實測結果進行了對比分析，結果表明理論計算是可信的。This thesis has made the contrast test of shrink and creep for plain concrete and concrete filled steel tubes on the basis of long term in - door test, obtains the principles of shrink - creep of concrete filled steel tube, simulates the test data, analyses and contrasts the coefficient of shrink and creep, thus offers reference for the calculation mode of creep, furthermore by introducing reasonable assuming at the same time, develops the calculation formula of equivalent elastic modulus at the same time, develops the calculation formula of equivalent elastic modulus, adopts common structure analyses procedure ansys to calculate the redistribution of section stress in the steel tube and concrete during operation
本文在長期的室內試驗的基礎上對素混凝土和鋼管混凝土做了收縮和徐變的對比試驗，得出鋼管混凝土的收縮徐變規律，對試驗數據進行了擬合，對鋼管混凝土的收縮和徐變系數進行了分析和比較，從而為鋼管混凝土的徐變計算模式提供參考，同時通過引入合理的假定，並結合由「齡期調整有效模量法」導出的混凝土徐變本構關系，推導出了鋼管核心混凝土考慮徐變影響后的等效彈性模量計算公式，並以此為基礎採用通用結構分析程序ansys對成橋后鋼管和混凝土應力重分佈進行了計算。Comparison theoretical and experimental research of creep based on theory of ultra thin beam, the effect results were provided for design of ultra thin beam
本文基於超薄梁理論，對該橋的徐變進行了理論和試驗對比分析，為以後的超薄梁設計提供有效的依據。By applying " none homogeneous multi - laminate element ", hong - kou rcc gravity dam ' s simulation computing of temperature field and stress field at construction period and operation period for all courses and many factors. e. some kinds of methods are discussed in detail for temperature field back analysis, and artificial neural network method for back analysis of thermal parameters of concrete is suggested
應用「非均質層合單元法」實現了洪口碾壓混凝土重力壩施工期、運行期全過程多因素的溫度場及徐變應力場的模擬計算，進行多方案的比較分析，推薦出優選溫控防裂方案，取得了非常滿意的成果。First, based on the analysis to the development condition of computer and property of the input data of bridge, this paper, taking convenience and practicability as principle, develops the multi passages data - in system made up with human - computer interactive interface and excel import model. second, after comparing and analyzing to the calculation theories and methods of creep and shrinkage, clearing up the key steps of creep and shrinkage analysis, the paper takes incremental method to establish program to analyze secondary inner force caused by creep and shrinkage. third, the paper puts some optimal or simplified treatment to the contents of pre - stress and develops relative program ; in addition, through analysis to the different methods used to calculate the secondary inner force caused by pre - stress, the paper combines equivalent load method with finite element, carries out some simplified treatments, and establishes program to calculate secondary inner force caused by pre - stress
首先，在分析當前計算機的發展狀況及橋梁結構輸入數據特點的基礎上，以方便、實用為原則，採用人機交互界面和excel輸入方式聯合的多通道數據輸入系統；其次，通過比較分析徐變收縮計算的各種理論及方法，澄清了徐變收縮分析的關鍵過程，並採用增量法編製程序，實現徐變收縮次內力分析；再次，對預應力的相關計算內容進行適當優化或簡化處理，並編制相應程序；另外，本文還在比較預應力次內力各種計算方法的基礎上，將等效荷載法結合有限元進行一些簡化處理，編製程序實現預應力次內力的計算；最後以三個算例來校核計算方法及程序運行結果的可靠性，取得了預期效果。Through the theoretical calculation and parameter analysis and compared the result with general composite beam, the results show that the section stress redistributed by the effects of concrete shrinkage and creep and tensile stress by difference temperature will be greatly reduced. the forcing characteristic of this
通過理論計算和有限元參數分析，與常規組合結構進行對比，驗證了預應力波形腹板組合結構具有大大減小徐變引起的應力重分佈及溫差和收縮效應在混凝土板產生的拉應力值、對加載齡期和持荷齡期不敏感的特點，結構受力性能非常優越。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。分享友人