prestressed concrete bar 中文意思是什麼

prestressed concrete bar 解釋
預應力混凝土芯棒
  • prestressed : 安裝預應力
  • concrete : adj 1 具體的，有形的；實在的，實際的。2 固結成的，混凝土製的。3 圖案詩歌的（參閱concrete poetry）...
  • bar : BAR ＝ Browning automatic rifle 白朗寧自動步槍。n 巴爾〈南斯拉夫港市〉。n 1 棒，桿，條；棒狀物。2...
  1. The layered combined finite element model is taken in the finite analysis of concrete and bonding bar. in the nonlinear analysis ofunbonded prestressed concrete, the effect that unbonded tendons acts on concrete is replaced by equivalent force in the method of equivalent prestress

    在有限元分析中，混凝土和粘結鋼筋採用分層組合式的有限元模型，在無粘結預應力混凝土的非線性分析中，將無粘結預應力筋對混凝土的作用，借鑒預應力的荷載平衡法，用其等效力來代替預應力作用。
  2. Heat - treated steel bar for prestressed concrete

    預應力混凝土用熱處理鋼筋
  3. The influence factors and control procedures of ductility of flexural mechanics of reinforced concrete is analyzed. with experiments of prestressed hollow bats reinforced with 800mpa spiral - ribs steel bars, the relation of ductility of steel bar and component is discussed, the influence factors and control procedures of ductility of flexural mechanics of prestressed concrete is analyzed. through the theory analysis and calculation, the recommendation fo

    本文在理論分析基礎上結合800mpa螺旋肋鋼絲預應力主心板的試驗，探討鋼筋延性與構件截面延性、構件位移延性的關系，研究預應力混凝土受彎構件在單調荷載作用下截面延性和位移延性的影響因素及其影響規律進而為控制構件延性即破壞形態提供相應的方法和依據。
  4. A way to avoiding crack or reducing crack width of concrete or reducing distortion of member is using prestressed concrete. the writer tried to make full use of the merit of the prestressed concrete and designed prestressed concrete mandril to control crack of structure. the prestressed concrete mandril, which was firstly applied high pressure on a small concrete bar, and then was made in concrete, so it would act as reinforced bar and resist load. in this thesis the writer designed 24 mmnbers and had experimental study of them, reached the conclusion that the effect of resisting crack of the prestressed concrete mandril was good when the load was not large, it can enhance the capacity of resisting crack and reduce the crack distance and crack width, but when the loads was large, the effect of resisting crack was not good, when we used the prestressed concrete mandril and reinforced bar together in member, the effect of resisting crack was very good. the writer analysed the adherence mechanism and wreck mechanism of the prestressed concrete mandril in anxial tension members, and according to the character of the prestressed concrete mandril, the writer constructed the bond model of it. then the writer introduced the analysis theory of crack including the bond - slip theory, the non - slip theory, the synthesis theory and mathematics stat method. the different theory had different theory base, they considered that the primary affection of crack width was different. in this test, the crack distance and crack width of members which placed reinforced bar were match to the compute value of the code gb 50010 - 2002 very well. to the members which

    本文共進行了24根試件的試驗研究，得出了預應力混凝土芯棒能較大地提高構件抗裂承載力，在荷載小於預應力混凝土芯棒的開裂荷載時有較好的抗裂效果，能較大地減小裂縫間距和裂縫寬度，但是當荷載較大預應力混凝土芯棒開裂時預應力混凝土芯棒的抗裂效果不是很好，若將普通鋼筋和預應力混凝土芯棒一起使用時則有很好的抗裂效果。本文分析了預應力混凝土芯棒在軸拉試件中的粘結機理和破壞機理，根據預應力混凝土芯棒本身的特點，提出了預應力混凝土芯棒與后澆混凝土之間的粘結模型。然後本文詳細介紹了經典的裂縫分析理論粘結滑移理論、無滑移理論、綜合理論和數理統計方法，各理論有著各自不同的理論基礎，認為影響裂縫寬度的主要影響因素也各不相同。
  5. In recent years, with the rapid development of large span prestressed concrete bridge in our country, the time dependent factors are becoming more and more important for engineering personnel, especially the shrinkage, creep of concrete and the relaxation of prestressed reinforcing bar, which depend on the time

    近年來，隨著大跨徑預應力橋梁在我國的蓬勃發展，混凝土的收縮、徐變以及預應力鋼束的鬆弛等時效因素對大跨徑橋梁的影響也越來越受到人們的重視。
  6. Then the area of ordinary steel bar may be calculated with the equation of ultimate bending capacity on normal sections and structures in detail. the method avoids the problems of the secondary internal force produced by the prestress and the troublesome " passive design ". the method makes design more simple, reasonable and economical, the new design mode of prestressed concrete structures in statically indeterminate structures is improved

    該方法以預應力混凝土結構中所有預應力混凝土構件同時滿足兩類極限狀態為設計原則，從整體上考慮了以結構中每一預應力混凝土構件滿足使用性能為要求聯立方程，確定預應力筋，再利用正截面承載力計算公式和構造要求確定非預應力筋。
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