預加載荷法 的英文怎麼說
中文拼音 [yùjiāzǎihéfǎ]
預加載荷法
英文
pre-loading method- 預 : Ⅰ副詞(預先; 事先) in advance; beforehand Ⅱ動詞(參與) take part in
- 載 : 載Ⅰ名詞(年) year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
- 荷 : 荷名詞(蓮) lotus
- 法 : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
- 載荷 : load; loading載荷變化 load fluctuation; variation in load; 載荷裝置 load device
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This paper emphasize study the seepage of vacuum - heaped load combining precompression., deduce the drainage quantity computation formula for stage loading in soft soil. an example show that the results of calculation are in good agreement with the measured value, this explain that the formula is rational
本文重點對真空堆載聯合預壓法的滲流進行了研究,得出了在分級加荷下軟土地基滲流量的計算公式,算例表明其計算值與實測值較吻合,說明所建模型是比較合理的。Here we obtain the strain compatibility method ande equilibrium of forces and concepts of fracture mechanincs, they can be used to predict the ultimats strength in flexure that can be achieved by such elements, given the cfrp cross - sectional area, or conversely, the required cfrp cross - sectional area to achieve a targeted resisting moment of rehabilitated flexureal elements
Cfrp加固梁在承受彎曲荷載時的破壞是鋼筋屈服后碳纖維斷裂和鋼筋屈服后混凝土壓碎。本文通過應變相容方法和對破壞機理的定義,由給定的cfrp橫截面積預測加固梁的極限彎曲強度;或者相反,在已知加固梁的極限彎曲強度時可以求出所需的cfrp橫截面積。By using 5000kn pressure - bent testing machine, the specimens of boulder concrete and crushed stone concrete were tested through three - point - bending method and wedge - split tensile method, the scale division of the index dial of pressure - bent testing machine is larger, whereas the predicted test - load is lesser, so the velocity of exerted load is controlled through observing the reading of the multimeter which is connected with the collecting systerm in order to continuously exert test - load
本文使用5000kn壓彎實驗機,對不同強度等級的卵石混凝土和碎石混凝土試件分別進行了三點彎曲試驗和楔入劈拉試驗。試驗過程中,由於實驗機噸位較大,而試驗荷載預計較小,為了能夠有效地控制加載大小和加載速度,採用通過觀察與荷載傳感器相連的萬用表讀數控制加載速度的方法,連續加載。Program can analyze the multi - girder curved bridge, by using the diatropic distributing theory. it can calculate the dynamic programming loading, by using the combined influence. it can analyze the internal force under the action with the prestressed force, by using the equivalent load method
程序採用橫向分佈的實用計算理論來處理多主梁曲線梁橋的空間受力分析問題;採用組合影響線來對曲線梁橋進行動態規劃加載;採用等代荷載法對曲線梁在預應力作用下的結構內力進行分析。Introduced by prestressed pier in the gate of spillway in xiao xia hydroelectric power station, the text reasonably established 3 - d finite elements mechanic model by the advanced finite elements popular in the world which can expediently impose tension of anchor funicular at its place. it also considered possible diversified combination of loading, and indicated that the effect of its prestressed action is fruitful compared with its conventional counterpart by study of mechanic calculation in comparison. as a result, it vastly improved burdening state of pier. by analysis of 3 - d finite element method, it also gained the stress result indifferent boundary conditions such as breast wall joint support and fixed support, and the displacement result in diversified loading combination. those results gained the instructive and reference value in design of prestressed pier
本文結合黃河小峽水電站泄洪閘預應力閘墩這一工程實踐,採用國際上已成熟的有限元方法,合理地建立了預應力閘墩的三維有限元模型,該模型可方便地按預應力錨索的點位施加錨索預張拉力,考慮了可能發生的多種荷載工況組合,並與無預應力閘墩結構進行了對比分析研究,指出其預應力效果是明顯的,可以大大改善閘墩結構的受力狀態,通過三維有限元分析,還得到了胸墻簡支、固端不同情況下的應力成果和各荷載下的位移成果,這些成果的取得對預應力閘墩的設計具有一定的指導和參考價值。In this paper, the three level fortification criterion, two stage design method and the elastic response spectrum theory are adopted, and the program of nba ( the program of nonlinear - aseismic analysis for beam bridge ) is used to calculate. through gathering, analyzing and calculating a lot of bridge design materials, this paper induces a simple way to calculate the relative displacement of the beam and the pier, and then according to the current design method, it concludes a better design principle of the supporting length of the beams. at the same time the dynamics is adopted to put forward the design method of the carrying capacity and the lengthen of prestress wire ( steel bar ) falling - off prevention structures of highway bridges
本論文採用三水準設防、兩階段設計方法、彈性反應譜計算理論,運用橋梁結構非線性地震響應分析程序nba ( theprogramofnonlinear ? aseismicanalysisforbeambridge )進行計算;通過收集大量的實橋設計資料,經分析計算,歸納總結出計算上下部結構相對位移的簡便計算方法;並綜合國內外的經驗值,提出梁的支承長度se的設計原則;同時運用動力學突加荷載的原理,推導分析了預應力鋼絞線式(鋼棒連接式)落梁防止裝置設計承載力的計算方法和設計伸長量s _ f的取值;最後本文通過實橋計算,說明了落梁防止系統設計的方法。In the paper, the load incremental method is adopted. by the way of reducing the elastic model of the destructive blocks in the elements, the finite element analysis model is revised and the repeated computing process does n ' t finish until the results are converged. the proposed method can simulate the entire process of concrete structures from crack to complete damage
分析中採用載荷增量法,對各級載荷下單元中破壞的材料分塊進行彈模折減處理,並重新生成單元剛度矩陣,經過多次迭代直至計算收斂,從而可以給出各類cfrp加固混凝土結構的載荷?變形全過程曲線,並預測其極限承載力。Machining deformation of aircraft monolithic component is simulated by finite element method ( fem ) and validated by experiment. the initial residual stress in pre - stretched plate is generated by simulating quenching and stretching processes. with a single tool - tooth milling process fem, the machining loads in monolithic component material removing is obtained. restart - calculation is put forward to complete the whole simulation of machining process. to verify the fem result, an experiment is carried out. the deformation distribution of the monolithic component resulting from fem shows a good agreement with the experiment result, which indicates that the key technologies presented in the paper are practicable and can be used to simulate the milling process of monolithic component to predict its deformation. lengthy and expensive trial and error experiment process can be avoided
在模擬淬火、拉伸過程獲得含有初始殘余應力的預拉伸板材以及模擬單齒切削過程獲得切削載荷的基礎上,提出並採用接力演算法,對一航空整體結構件的材料銑削過程進行有限元模擬,同時進行了試驗研究.結果表明,有限元模擬的整體結構件的變形與試驗具有一致性,從而證明提出的整體結構件加工模擬關鍵技術的可行性,避免了為研究加工變形而進行的繁瑣的試錯法Kuroda uses : oversized bal preload for light to medium loading applications, and double nut ( pin method ) for medium and higher loading applications
對于輕度以及中度載荷應用場合,黑田採用增大鋼球直徑的辦法實現預壓加載;對于高負載場合,則採用雙螺母方式。( 3 ) fem basic theory of foundation pit excavation stimulation is expounded, numerical model and method of construction simulation are determinated, which includes simplification of two - dimension problem and constitutive model of soil mass i. e. constitutive model of duncan - chang hyperbola model, numerical ways of initial situ stress, stimulation of equal nodal load of foundation pit excavation, nonlinear solutions of basic equations, fem disposing of inner supporting and pre - axial force etc. further fem code of stimulation of foundation pit excavation is compiled
闡述了基坑開挖模擬的有限元基本理論,確定計算模型及施工模擬方法。包括二維問題的簡化、土體的本構模型,即鄧肯-張雙曲線本構模型、初始地應力場的計算方法、基坑開挖等效結點荷載模擬、基本方程的非線性解法、內支撐及預加軸力的有限元處理等,並編制了模擬基坑開挖的有限元程序。And a nonlinear analysis of concrete beams on the basis of ansys program is used in order to overcome the shortcomings of experiments 。 the results indicate that locally strengthened technique has good reinforcing effect. it can improve the crack load, yield load and limiting load
試驗結果表明,體外預應力cfrp筋局部加固法具有較好的加固效果,能夠很好的提高梁的開裂荷載、屈服荷載和極限荷載。Based on the characteristic of the grotto rock reinforced by prestress anchor cable, taking three typical engineering sections in yulin grotto in anxi county gansu province, as examples, the simultating computation for the displacement field and stress field of the grotto rock under seismic load is done using dynamic finite element method, the change regularity and dynamical response of the grotto rock are concluded
摘要根據錨索加固石窟巖體的特點,以甘肅安西榆林石窟的三個典型的工程段為例,通過動力有限元的方法對地震荷載作用下預應力錨索加固石窟巖體的位移場、應力場的模擬計算,得出了其動態響應和變化規律。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。分享友人