ultimate bending moment 中文意思是什麼
ultimate bending moment
解釋
極限彎[曲力]距-
The research shows that : 1 ) the ductility of the hsc bending members constructed is much greater than 5 ; 2 ) increasing the vertical links and distribution steel can increase the deflection under ultimate moment ; 3 ) with appropriate compressive bars, vertical links and distribution steel the increase of moment after yield and the decrease of moment under ultimate moment can be ignored, so the ductility of the hsc bending member is much larger ; 3 ) the width / depth ratio of hsc bending member has no obvious effect on the ultimate compressive strain of concrete ; 4 ) the method used here to calculate the deflection is applicable ; 5 ) the location of crack coincides with the location of vertical links and distribution steel ; 6 ) the bending property of the hsc structure under the blast load can meet the demand of protective engineering
研究表明：本文研究的梁、板構件的延性比遠大於5 ；增加箍筋（鉤筋、分佈筋）含量，可以提高壓區混凝土剝落時的撓度；在適當的受壓筋、箍筋（鉤筋、分佈筋）含量下，可以忽略壓區混凝土剝落瞬間的承載力下降，從而大大提高構件的延性；受彎構件的寬高比對壓區混凝土極限應變的影響不明顯；受彎構件的裂縫間距受箍筋（鉤筋、分佈筋）的布置影響；文中所用的承載力和變形計算方法是可行的。化爆試驗表明，高強混凝土構件的動載抗彎性能能夠滿足防護結構的要求。 -
At first, the experiment carried out by tianjin university has been analysed according to the " nonlinear balance trying calculation " method, and the values of yield load and ultimate load agree with the test result better, and the curve of bending moment - curvature, bending moment - deflection can agree with the results. the second, the simplified formula for evaluation the ultimate flexural capacity of cfrp strengthened rc members is presented according to the three probable failure modes ( compression failure ; cfrp rupture ; crushing of the concrete in compression before yielding of the reinforcing steel ). it is applicable to both singly and doubly reinforced rectangular sections, as well as flanged sections
首先利用鋼筋混凝土非線性平衡試演算法對天津大學試驗進行了理論分析，所得分析值與試驗結果相比，加固梁的屈服荷載、極限荷載能夠很好地吻合，彎矩曲率關系曲線及彎矩撓度關系曲線較為吻合；其次，為了滿足實際工程的需要，根據碳纖維布加固構件可能發生的三種破壞形態（壓區混凝土壓碎破壞、碳纖維布拉斷破壞以及受拉鋼筋尚未屈服時壓區混凝土已壓碎破壞） ，區別三種鋼筋混凝土構件截面形式（單筋矩形截面、雙筋矩形截面、 t形截面） ，分別給出了碳纖維布加固混凝土構件抗彎承載力的簡化計算公式和適用條件，並進一步探討了這三種截面形式下進行加固設計和復核的步驟。 -
The numerical results show that the lateral ground displacement is one of factors that cause pile failures in liquefied ground. at the soft - hard interface, pile may overbear the ultimate moment which leads to bending and shearing failures. therefore, except the effect of large inertial loads from superstructure, the influence of the lateral ground displacement on pile foundation cannot be neglected in a seismic design of pile foundation in lateral spreading ground
計算結果表明地基的側向位移是與液化有關的樁基震害的主要原因之一，在軟硬交界處樁可能承受了超出樁本身極限抗彎能力的彎矩，容易發生彎剪破壞，在有液化側擴地基中樁基的設計不能僅考慮上部結構震動的影響，地基的水平側向位移對樁基的影響不容忽視。 -
Using the improved model, an ultimate bending moment formula is presented
在梁的極限分析中採用新的剛塑性模型，推導出極限彎矩公式。 -
The calculation of the ultimate longitudinal bending moment is extremely complicated because of the non - linearity both in material properties and in geometry of deformations
由於計及了材料的和幾何的非線性因素，總縱極限強度的計算變得非常復雜。 -
The concept of the longitudinal strength of ship hulls has changed and advanced greatly as the study on the failure mechanism of the hull is getting deep. by taking account the failure modes of yielding, buckling and their combination, as well as the non - linear interactions between structural members, the ultimate longitudinal bending moment is defined by the moment corresponding to the point with zero slope on the moment - curvature curve of the ship hull
但隨著對船舶破壞機理的認識和研究發現，在研究船體的總縱極限強度時，必須考慮構件的屈曲、屈服等各種可能的破壞模式，要考慮受壓構件屈曲后及崩潰后的非線性性能的影響，要考慮組成船體的各個構件發生破壞的漸進性質和相互作用等。
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