first torsion 中文意思是什麼
first torsion
解釋
一階扭轉-
In this thesis, the resistance performance of concrete - filled steel tubes under simple load is summed up first. according to the resistance expressions under press and bending, a concise formula of resistance under torsion is deduced on the ground of two former formulae. the format of this formula is of good similarity with that under press and bending
在對比了原有的兩種計算方法的基礎上，對離心鋼管混凝土構件在純扭轉作用下的極限承載力公式，提出了與結果試驗更加吻合、形式上更為簡潔的抗扭承載力實用計算公式，在形式上與軸壓和彎曲承載力公式統一起來。 -
Third, a theoretic approach based on total theory of plasticity is for the first time applied to analyze elastoplastic torsion rigidity of the tubular, and the results are well proved by the test data. also for the first time, the plastic stability of the spiral skew stiffening shell is studied. it is shown in the experiments that there is the comparability between the stability of the members at plastic limit and that of the thin - shelled steel tubular with the spiral skew stiffening concrete rib
本文首次分析了扭轉作用下的螺旋斜向加勁殼的塑性穩定性問題，還根據試驗觀象的觀察，對構件在塑性極限時的狀態，簡化為內壁襯朽螺協剎向加勁混凝土肋的薄壁鋼管的塑性穩定問題，利用塑性殼體穩定理論進行了探討。 -
First, the stability of box section beams under pure bending is studied based on two different torsion theories on members with closed cross - section by umansky and gjelsvik in the elastic phase, and the critical moments are obtained. comparisons show that these two different theories give nearly the same critical moments
文章首先對箱形梁進行研究，分別基於umansky約束扭轉理論和gielsvik約束扭轉理論推導了箱形梁在純彎作用下的彈性臨界彎矩，並進行了比較，發現基於gielsvik約束扭轉理論的臨界彎矩具有較好的精度且形式簡單。 -
Mr. lin tongyan first introduced the detail of irregular graphic in his book " the concept and system of structure ". moreover, in that book he also set some specific parameter for described how a structure will crashed because of that. when quality centre do not coincide with the stiffness centre, will cause a displacement at the same direction with layer components which have different shift, then the structure will torsion around floor ’ s stiffness centre, in some case, it will resulting in severe damage, even let the whole structure crashed
而由於結構形式、平面布置多種多樣，令結構自身抵抗扭轉的能力也有所不同，因此用同樣位移比標準，即「位移比不宜大於1 . 2 ，不應大於1 . 5 」來描述不同結構形式的不規則特性，可能失之於粗糙，不能很準確地反映出結構的抗扭能力，因此，設想對于結構是否應「被判定為嚴重不規則結構」的標準，應當聯系結構自身抵抗扭轉能力大小，予以綜合考慮和評價。 -
By model experimentation of 14 high - strength concrete frame columns subjected to axial eccentric compression, shear and humdrum torque, of 9 high - strength concrete and 3 high - performance concrete frame columns subjected to biaxial eccentric compression, shear and reversed torque, the behavior of high - strength concrete frame column in warped section are studied the first time, and the mechanism of torsion bearing capacity of high - strength concrete frame column are discussed
通過14根承受單向壓、彎、剪，單調扭矩復合作用的高強鋼筋混凝土構件和9根高強混凝土、 3根高性能混凝土框架柱在雙向壓彎剪反復扭矩復合作用的模型試驗研究，首次研究了高強混凝土框架柱在翹曲截面上的受力行為，探討了高強混凝土框架柱抗扭性能的受力機理。 -
And the theoretical a nalyses done in this paper are listed below : first, the experimental data on the members of varied parameters under torsion demonstrate the general rule of the deformation while the tubular is under torsion. the paper establishes three phases of the deformation of the tubular under torsion, namely, the elastic deformation, the elastic - plastic deformation, and ultimate failure. through regression analysis, a simplified method is proposed for calculating the capabilities of the tubular under elastoplastic torsion, and the formulary for bearing value, is also recommended as a reference in engineering design
本文根據不同參數的構件受扭性能試驗結果，研究了該結構受力變形全過程的基本規律，提出了受鈕全過程的三個工作價段，即彈性變形階段，彈塑性變形階段和極限破壞階段，經分析回歸得到扭轉全過程彈塑性的簡化分析方法及承載力計算公式，可供工程設計參考；同時根據本文的彎扭試驗結果以及對離心鋼管混凝土構件進行的理論分析，推導了彎扭試驗相關承載力的關系。 -
And, the structure weak - regions lie respectively in the transfer - floor, the vicinity of the 20th floor and the roof, which need to make the measure to avoid the structure plastic deformation under the action of stronger earthquake. ( 5 ) the vibration form appears the coupling of move and torsion, electing the first 15 modes to analyze can reflect accurately the actual load - function situation of the structure
轉換層、 20層附近以及頂層為結構的薄弱層，需採取加強措施以防在強震下產生塑性變形。 （ 5 ）本結構的振動形式表西安理工大學碩士學位論文現為平動與扭轉的禍連，取結構的前巧階振型作分析能夠較精確的反應結構的實際受力狀態。 -
At present, functions and forms of buildings trend towards diversification, plane and set up surface irregular already quite general structure even more, outstanding to torsion effect question, it is more nessary to go on and assess and prove safely to code design method even more. as far as the irregular structure, only the first step of design is really performed according to the chinese code for seismic, and the structures " response under the fortification and rare seismic action need to be reviewed through some three - dimensional nonlinear analysis quantificationally
當前，建築物的功能和形式更趨多樣化，平面及立面不規則結構已相當普遍，扭轉問題更加突出，更需要對規范的設計方法是否足夠安全進行評估和驗證。對于不規則結構，我國目前事實上只能做到一階段設計，我國現行規范中有關抗扭設計的方法在設防地震和罕遇地震作用下的效果到底如何，有待通過三維非線性地震反應模擬給出一些定量的分析。
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