類空截面 的英文怎麼說
中文拼音 [lèikōngjiémiàn]
類空截面
英文
spacelike section-
In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。The research indicated that the airbag volume, vent hole size and gas generate mass flow rate exert dominant influence on the protection effectiveness of the occupants. the paper pointed out that small airbag volume, small vent hole size and low gas generate mass flow will provide the occupants with best protection in the mini - van frontal crash
研究結論表明氣囊體積、氣囊排氣空截面積和氣體發生器類型對氣囊的防護效率有重要影響，並提出對于駕、乘人員安全氣囊系統，小體積氣囊、小排氣孔截面積和高氣流率的發生器的組合將產生最佳防護效果。Consequently, on the basis of non - winkler foundation model, a finite - element method that utilizes foundation flexibility matrix into iterative calculation is proposed in this paper originated from the item " the optimal design theory and research of pile capping beam " sponsored by natural science fund of hunan province, which the continuity of soil mass can be accounted for under various boundary conditions, different loadings and irregular beam characters
本文結合湖南省自然科學基金項目「樁基承臺梁優化設計理論與方法研究」 ，針對非文克爾地基（半空間、線性變形層或單向壓縮層地基模型等）上的樁基承臺梁，提出一種利用地基柔度矩陣來進行迭代的有限單元法，可充分考慮梁下土體的連續性，並對基礎與土體脫開、承臺梁截面變化、梁體邊界條件復雜、上部荷載類型變化以及梁下基樁承載力差異等情況進行分析計算。To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high - position transfer story structures. first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived. then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo - dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete. seismic behaviors are analyzed, including inter - story displacement, base shear - displacement skeleton curves, and equivalent viscosity - damping curves. a program is programmed to carry out the elasto - plastic dynamic analysis, and displacement time - history curves of the two models are derived. the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors. it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures. finally, some design suggestions are put forward, which can be referenced by similar engineering
為滿足建築物大空間和靈活隔斷要求，在高位轉換層結構中採用迭層空腹桁架結構.首先分析了其受力性能，得出了空腹桁架各構件合理的截面剛度以及布局形式.然後結合一實際工程，進行了兩榀迭層空腹桁架轉換結構模型（ 1 : 8相似比）的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架，另一榀配置了預應力和鋼骨混凝土，對比分析了兩模型的層間位移比、骨架曲線以及等效粘質阻力系數等抗震性能的比較，並進行了彈塑性動力分析.試驗和分析結果表明，配置預應力和型鋼混凝土的迭層空腹桁架轉換結構具有良好的抗震性能，可以成功地解決迭層空腹桁架作為轉換層結構所產生的弊端問題，最後對這類轉換層結構提出了相應的設計建議A precise solution for torsion of bars with hollow elliptical cross section
一類橢圓截面空心柱體扭轉的精確解By using it, the section mapping drawings of multi - types & complex pipeline system can be automatically generated through the entity crossing operation. this method composes of the following three key steps. in the first, different graphic entities are identified from the complex pipelines drawing in terms of the layer information they owned, then the correspondent information is to be encapsulated to keep the spatial data completeness of the graphic symbols
該方法通過管線系統設計圖中的圖形實體的分層處理與信息封裝，首先實現了復雜管線實體的自動識別並確保了圖形實體具有對應管線實體對象的完備空間信息；在此基礎上，根據用戶給出的任意位置截切線，構造隱式描述的截切面並與隱式描述的管線實體進行求交運算；最後通過對求交結果的坐標變換，生成能夠直觀反映出多類型復雜管線系統空間分佈信息的截切面映射圖。After the comparison of the stability checking computations and the section categorised situation both at home and abroad the current standard, some problems was discussed in the standard of our country. contraposed these questions, the paper computed the space stability coefficient of some general t - shaped and l - shaped sections and all the sections of t - shaped, l - shaped and 2 - angle iron t - shaped in the formed - steel - table, and worked out the curves. according to the comparison of the curves the paper got and the curve in the standard, some simple conclusions was put
對國內外現行規范軸壓柱穩定驗算方法及柱子曲線截面分類情況進行了對比，討論了我國規范曲線中存在的一些問題，並針對這些問題，以規范初始彎曲值對任意「 t 」形和「 l 」形截面和型鋼表中所有t型鋼、 l型鋼、雙角鋼t形鋼截面的空間穩定系數進行了計算，作出其與規范曲線的比較圖，通過計算結果的分析對各類截面歸類情況作了簡單的評述，其中提出的一些建議可以作為規范修訂的參考依據；同時，這些計算結果也進一步證明了本文的柱子空間穩定分析方法的正確性。It is why that i conduct the research. there are mainly five methods in the paper. ( l ) the dialectic materialism method : emphasize on variety and contact ; ( 2 ) the method of analyzing experience and demonstration : sum up experience by collecting, classifying, settling, concluding, and analyzing the statistical data. then find out general rules about alteration of investment structure ; ( 3 ) comparison and analysis method : find out the key reasons for the formation and alteration of investment structure by spatio - temporal comparison ; ( 4 ) systemic analysis method : regard investment as a whole organism and study its internal relationship and alteration. ( 5 ) static and dynamic method
本文的主要研究方法有五種：一是辨證唯物主義的方法，強調運動、變化和聯系；二是經驗實證分析方法，通過對大量統計資料的收集、分類、整理、歸納、分析，做出經驗總結，找出投資結構變動的一般規律;三是比較分析法，通過橫向（空間）和縱向（時間）比較，找到影響投資結構形成和變化的關鍵因素;四是系統分析方法，把投資結構作為一個由很多子系統構成的有機整體，研究其內部的聯系和變化;五是靜態分析和動態分析方法靜態分析是從某一時點考察投資結構變動的橫截面的狀態，這種方法通常用於產業關聯分析;動態分析則更強調考察投資結構的形成和演進的趨勢。分享友人