restraint of concrete 中文意思是什麼
restraint of concrete
解釋
混凝土的形變限制-
The results of experiment on the relationship between tensile strength, shrinkage, self - desiccation shrinkage and flat restraint cracking show that sra ' s physical shrinkage - reducing effect and ea ' s chemical expansion effect greatly enhance the volume stability of concrete and reduce the probability of early - cracking
對減縮劑與膨脹劑抗拉強度、干縮、自乾燥收縮及平板約束開裂的試驗結果表明： sra的物理減縮作用及膨脹劑的化學膨脹作用，大大提高了混凝土早期的體積穩定性，降低了早期開裂的概率。 -
In the dam foundation restraint area, mgo can be mixed into concrete to prevent dam longitudinal crack. research on autogenous volume change of rcc mixed with mgo, and research on thermal stress compensation of darn foundation prove that rcc mixed with mgo plays a role in dam crack control
在材料措施方面，深入研究高碾壓混凝土壩基礎約束區採用外摻mgo措施，利用其微膨脹性能補償壩體降溫過程中產生的溫度應力，以防止大壩縱向裂縫的發生。 -
Controlled blasting method applied to demolishing underground reinforced concrete pile shaft is presented according to specific circumstances of drilling machine and outside restraint, especially including attention of drilling, charging and initiating etc
介紹了地下鋼筋混凝土樁體的控制爆破方法，以及在鉆孔設備及外界約束較特殊的情況下，鉆孔、裝藥及起爆等方面的注意事項。 -
Abstract : controlled blasting method applied to demolishing underground reinforced concrete pile shaft is presented according to specific circumstances of drilling machine and outside restraint, especially including attention of drilling, charging and initiating etc
文摘:介紹了地下鋼筋混凝土樁體的控制爆破方法，以及在鉆孔設備及外界約束較特殊的情況下，鉆孔、裝藥及起爆等方面的注意事項。 -
It ' s the first time clearly and systematically to present the concepts of restraint influence coefficient of steel to strain increment, to curvature increment and to deflection increment due to creep which are different each other. theoretical formulae are established, and approximate formulae are also obtained while considering the characteristics of common - used concrete and ambient condition of real bridges in china. so, an approximate restraint influence coefficient method to analyze the effect due to creep and shrinkage in pc bridges is put forward, and the equations to estimate second - force due to creep considering influence of steel in system - transferred continuous pc bridges is also established
本文首次清晰而系統地提出了鋼筋對徐變的不同效應（徐變應變、徐變曲率、徐變上拱）約束影響系數的概念，建立了相應的計算式；結合我國普遍採用的混凝土的徐變特性和橋梁的構造特點及工作中南大學博士學位論文摘要環境特徵，給出了具有較高計算精度的實用計算式;在此基礎上，建立了橋梁徐變效應近似分析的鋼筋約束影響系數法，並推導出了考慮鋼筋影響的超靜定梁徐變次內力的近似計算式，可方便地應用於橋梁研究和設計中。 -
The developments of restraining stress, creep behavior and elastic modulus in concrete were measured under different restraint degrees by uniaxial restrained shrinkage tea, and the influence of restraint degree on evaluation of cracking sensitivity in early concrete was alto discussed
採用了單軸約束試驗方法，分析了不同約束程度下混凝土約束應力、鬆弛性質和彈性模量的發展，並討論了約束程度對早期開裂敏感性評價的影響。 -
Shrinkage deformation is a driving force to stress generation and cracking in early concrete, whereas the occurrence of cracking depends on the restraint condition
摘要收縮變形是混凝土早期開裂的驅動力，然而是否會發生開裂還與約束條件密切相關。 -
On the basis of optimum control solution theory, the dynamic parameter discernment model of concrete gravity dam under the priori restraint conditions has been set up and a restraint variable - dimension method for finding the solutions of such model has been put forward
基於最優控制解的理論，建立了引入先驗約束條件的混凝土重力壩動態參數識別模型，提出了求解該模型的約束變尺度方法。 -
Synthetic analysis of soil restraint by prestressed concrete raft foundation reaction
土摩擦阻力對預應力筏板基礎作用效應分析 -
In the light of the deficiency of the routine calculating method in the application of multi - curve style prestress steel bar in the large span structures, an applied program is written to calculate the loss of the prestress. fem is used to calculating the concrete stress of the frame beam under prestress load, in the process of which, many successful improvements have been made in the element division, load application and the treatment of the support restraint
針對常規計算方法在大跨結構中預應力筋多波曲線配置應用中的不足，編制了計算預應力損失的應用程序；用fem計算了框架梁在預應力載荷作用下的混凝土應力，其間在單元劃分、載荷施加及支座約束處理上有成功的改進。
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