expansion cracks 中文意思是什麼
expansion cracks
解釋
膨脹龜裂-
Using the complex potential method in the plane theory of elasticity of an anisotropic body, a series solution to the stress field of a finite plate containing multiple cracks subjected to arbitrary loads is obtained by means of the faber series expansion, and the stress intensity factors at the crack tips are calculated based on the theories of fracture mechanics. equivalence yield stress is introduced in order to consider the effects of the plastic zones, with which the strip yield criteria is developed in the article so that the effects of structural size and the crack interactions on the stress distribution can be considered accurately. the effects of plate size, crack size and crack distributions on the stress intensity factors as well as the residual strength of the plate are studied detailedly
採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，得到了含多裂紋有限大板在任意載荷作用下應力場的級數解，並應用斷裂力學方法確定裂紋尖端的應力強度因子；引入當量屈服應力考慮裂尖塑性區的影響，提出基於帶屈服準則的剩餘強度分析模型，能夠充分考慮結構尺寸和裂紋之間相互作用對應力場的影響；通過數值計算詳細討論了結構尺寸和裂紋之間位置關系對應力強度因子和結構剩餘強度的影響規律，得到了一系列對工程應用具有實用價值的結論。 -
Finally, in view of the complexity and non - linearity of the pavement in cracking and breakage, the paper tries to explain the formation in the cracks of the pavement and mechanism & process of expansion by nonlinear theories ( like chaos, fractal etc. ) and to describe the whole process of fissures and breakage so as to provide a new thought and method for the study of the cement concrete.
最後，考慮到路面開裂和破壞的復雜性和非線性，本文採用非線性科學理論（如混沌、分形等）來解釋路面裂縫生成和擴展的機理和過程，從總體上對開裂和破壞的全過程加以描述，為水泥混凝土路面的開裂機理和破壞過程研究提供一種新的思路和方法。 -
Analysis on the causes of damage, this paper modified the meijia bitumen materials in order to enhance the low temperature capacity of bitumen and bituminous mixture through the polymer. emphasis on the study of low temperature capacity of modified asphalt and bituminous mixture, we utilize reasonable construction craft to avoid the cracks problem between bituminous mixture and bridge and give a advance way of small or moderate span bridge expansion joint in low temperature areas
針對這一缺陷，本文通過添加熱塑性橡膠類改性劑和橡膠類改性劑，對美佳改性瀝青結合料進行二次改性，重點研究了改性后瀝青結合料和混合料的低溫性能，並採用合理的施工工藝解決填縫料與梁端間存在的界面裂縫問題。 -
After long - term observations, the expansion of cracks has proved to be effectively controlled, which attains the expected results and objectives
經長期觀測，裂紋發展得到有效抑制，達到了預期效果和目的。 -
The results shows that the combined use of fibers and expansions was superior to the use of fibers or expansion agents alone in reducing the amounts of plastic shrinkage cracks and diminishing the size of cracks, and it improved the resistance to plastic shrinkage crack extremely
文章研究了聚丙烯纖維和膨脹劑復合對砂漿塑性收縮裂縫的影響，結果顯示，纖維與膨脹劑復合，在減少塑性收縮裂縫數量和細化裂縫兩個方面均優于纖維或膨脹劑的單獨作用，砂漿抵抗塑性收縮開裂能力顯著提高。 -
There are three main kinds of matrix cracks within the as - received composites : cracks induced by mismatch of thermal expansion coefficients, cracks between bundles and cracks induced by matrix ' s delamination. they locate within the bundles, between the bundles and on the surface of the bundles respectively
主要結果如下： （ 1 ）研究表明，在原始3dc sic復合材料內部主要存在三種裂紋：熱失配裂紋，纖維束間裂紋和基體分層裂紋，它們分別存在於纖維束內部，纖維束之間和纖維束表層。 -
Therefore, the present paper, based on the existing achievements as well as an extensive study & investigation in combination with part of the achievements the author has derived by hosting or participating in the research programs of the cement concrete pavement, has led to three phases of fissures and breaking in the pavement slab on the condition that each performance of the subgrade is maintained, i. e. stages of formation in initial cracks, of accumulation & expansion in ruptures and of fissures & breakage in the pavement
為此，本文在已有研究成果的基礎上通過廣泛調研，結合作者近幾年來主持或參加的有關水泥混凝土路面研究課題的部分成果，在路面基層的各種性能得到保障的前提下，通過理論研究和試驗研究，得出路面板的開裂破壞過程分為三個階段，即初始裂縫形成階段、裂縫累積和擴展階段以及路面斷裂破壞階段。 -
The mechanism of physical damage of carbon fibers was clarified firstly. the precursor which attached on carbon fibers changes to inorganic ceramic under high temperature with large volume shrinkage which appearing at cracks with fiber traction and the cracks are mainly vertical to fiber axis. because of mismatched coefficients of thermal expansion, carbon fibers suffer multiple thermal stresses and are damaged
首次探明了碳纖維熱應力物理損傷機制，即碳纖維表面附著的先驅體在高溫下無機化形成陶瓷體，同時伴隨著大的體積收縮，在碳纖維的牽引下，基體的體積收縮以開裂形式出現，裂紋的取向以垂直於纖維軸向為主，由於碳纖維與基體熱膨脹系數失配，致使碳纖維在降溫過程中受到復雜熱應力，引起碳纖維損傷。 -
Most modified asphalt bridge expansion joints existed cracks because of low temperature when they applied in cold areas. between the bituminous mixture and bridge, the cracks existed also
改性瀝青橋梁伸縮縫在寒冷地區應用時，由於低溫作用普遍開裂，而且填縫料與橋梁梁端連接處存在界面裂縫。
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