shrinkage stress 中文意思是什麼
shrinkage stress
解釋
收縮應力-
The calculation modes of the coefficient of shrinkage and creep of the bulgy core concrete in steel tube are discussed. based on a few reasonable hypotheses and the stress - strain relation of concrete acquired by the " adjusting valid modulus depending on load time " method, a compact formula is reasoned out, which is applied to calculate the equivalent elastic modulus of the bulgy core concrete considering the affection of shrinkage and creep. so, the analysis of the affection on cfst arch bridge by shrinkage and creep can be progressed by pole - girder fem, further more, the analysis precision is quite high
本文還對核心膨脹混凝土特殊的收縮、徐變系數計算模式展開了探討，在合理的假設前提下，採用「齡期調整的有效模量法」得到的混凝土的本構關系，推導出鋼管內核心混凝土在考慮徐變影響后的等效彈性模量計算公式，並以此為基礎採用桿系有限元方法來對鋼管混凝土拱橋進行較高精度的收縮徐變分析。 -
Shrinkage stress was found to increase linearly with cure temperature.
我們發現收縮應力隨固化溫度直線增加。 -
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 -
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 -
Based on the inductive analysis to theories, aimed at perfection to software development, the paper expands three modules to the bridge software bridge master about to be developed - - data input system, creep and shrinkage analysis model and pre - stress analysis model
本文以理論歸納分析為基礎，以軟體開發完善為目的，對擬開發的橋梁軟體bridgemaster擴充了三大模塊? ?數據輸入系統、徐變收縮分析模塊及預應力分析模塊。 -
Through the experiment of the interfacial bonding shear strength and the shrinkage strain of concrete, the influence of the interfacial roughness of used concrete surface and interfacial bonding agent to interfacial bonding strength is revealed ; new concrete component and the shape and size of concrete slab are main factor affecting the shearing stress in layers
試驗結果表明：老混凝土粘結面的粗糙度和界面粘結劑類型對新老混凝土界面粘結強度影響很大；新鋪混凝土材料和混凝土路面板形狀尺寸是影響新老混凝土粘結面收縮剪應力的主要因素。 -
If the surface is covered or watered after casting of concrete, the influence resulted from change of environmental temperature and relative humidity on concrete will decrease to some extent. then the shrinkage stress will also decrease and the probability of cracking will be reduced as well
混凝土澆注完后對表面進行覆蓋或澆水養護，可以很大程度上地減少外界溫濕度變化對混凝土內部的影響，減小了混凝土的收縮應力，從而降低混凝土開裂的可能性。 -
With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion
研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。 -
( 3 ) this thesis deduces the predigestion calculating method for calculating the section stress redistributed by the effects of concrete shrinkage, creep and difference temperature of pre - stressed lager cantilever composite beam with corrugated steel webs
（ 3 ）推導了預應力波形鋼腹板組合挑梁關于徐變、收縮及溫度效應下的截面應力分佈簡化計算方法。 -
Third, the theory and formulations about the stress redistribution due to creep and shrinkage of composite section and the secondary internal forces which are caused in hyper static structure, the self - stressed force and the secondary internal forces due to expansion, are studied, program is compiled by use of formulations studied above and it is used to analyze sensors that are installed during the course of work
再次，探討了收縮徐變作用下組合截面應力重分佈以及在超靜定結構產生次內力和膨脹變形引起自內力和次內力計算理論及公式，編制了相應程序，對加固過程中埋設的傳感器進行了分析計算。 -
Study on the creep stress of reinforced concrete frame structures affected by temperature and shrinkage
鋼筋混凝土框架結構在溫度及收縮作用下的徐變應力分析 -
Using biomechanics methods, through the study of the influence of different injection and maintain period on the expansion efficacy and shrinkage rate of skin, a rapid expansion method with relatively big expansion area is proposed ; biomechanics analysis in vivo is been made on the expanded skin ; comparing the biomechanics property in vitro of the rapid expansion and conventional expansion with different maintaining times, the parameters such as strength, stress - strain relationship, stress relaxation and creep which reflect the characteristic of the expanded skin have been obtained ; making the research of the expanded skin ' s biomechanics changes at different stage after grafting, the long - term and short term diversified regular has been obtained ; making experimental study and discussing the changes in the microcirculation and vessel structure of exceedingly expanded shin, the relationship between survival length of flap and the changes has been gotten
本課題旨在用生物力學的方法通過動物實驗來研究不同注水擴張期和維持擴張期對皮膚擴張量和皮膚回縮的影響，探討有效獲取較大的擴張皮膚面積的快速擴張方法；對擴張皮膚進行在體生物力學特性分析；比較了快速擴張和常規擴張在不同維持期的皮膚離體生物力學特性，得到離體生物力學各參數，如強度、應力?應變、應力鬆弛、蠕變等；為全面了解擴張皮膚在移植后的近期和遠期的變化規律，做了擴張皮膚移植后不同階段的生物力學變化的實驗研究；探討了不同擴張量時皮膚的微循環變化和血管結構變化與皮瓣存活的關系。 -
Plastics - heatshrinkable films of polyethylene, ethylene copolymers and their mixtures - determination of the shrinkage stress and contraction stress
塑料.聚乙烯乙烯共聚物及其混合物的熱收縮薄膜.收縮應力的測定 -
Analysis of construction stage shrinkage stress and cracking of concrete box girders
混凝土箱梁橋施工階段收縮應力及開裂現象分析 -
Plastics - heatshrinkable films of polyethylene, ethylene copolymers and their mixtures - determination of shrinkage stress and contraction stress
塑料.聚乙烯乙烯共聚物及其混合物的熱可縮薄膜.收縮應力的測定 -
The change of moisture distribution is concentrated on the surface layer concrete, which is very thin. however, the change inside the concrete is very slight. this unbalanced development of moisture distribution causes large shrinkage stress in the layer concrete and then leads to crack
混凝土濕度變化主要集中於較薄的表層混凝土內，內部濕度場變化極微，這種濕度發展變化的不均衡使得表層混凝土內產生較大的收縮應力，將直接導致裂縫的產生。 -
Plastics - heatshrinkable films of polyethylene, ethylene copolymers and their mixtures - determination of shrinkage stress and contraction stress iso 14616 : 1997 ; german version en iso 14616 : 2004
塑料.聚乙烯乙烯共聚物及其混合物的熱可縮薄膜.收 -
Based on these theoretical studies, the temperature stress and shrinkage stress of plain concrete slab and reinforced concrete slab are calculated using finite element analysis software adina, and the differences between them are also made
在此理論研究的基礎上，通過有限元分析軟體adina來計算素混凝土平板構件和配筋混凝土樓板的溫度應力和干縮應力，比較其抗裂性能的區別。 -
Then according to temperature gradient and humidity gradient, which are the essential factors inducing concrete cracks, distribution of thermal and moisture within young concrete and numerical methods to calculate temperature stress and shrinkage stress are systematically analyzed
然後針對引起混凝土開裂的本質因素即混凝土內部的溫濕度梯度，系統地分析了混凝土溫濕度場的變化規律及溫度應力和干縮應力的數值計算方法。
分享友人