through truss 中文意思是什麼
through truss
解釋
下承式桁架-
This article discuss the method to measure distortion of truss by means of ccd device. the distortion can be measured with many kind of displacement transducer, but it must be placed on stable base. when the huge truss is moving through some tunnel, it is difficult to find a stable base, especially there is no enough space for someone to operate. it is hardly to measure the distortion by touching. on the contrary, this can be achieved by means of ccd device
桁架在自重或載荷的作用下產生的撓度可以用多種位移傳感器測得，這些測量方法需要有良好的基礎，在大型桁架梁測量現場，由於桁架的變形，難于找到這種基準，如果加上測量環境惡劣，人無法操作情況，則會給撓度測量帶來極大的困難，而採用光電荷耦合器件，並利用激光進行遠程實時撓度測量，即可以解決這個難題。 -
The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge. the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges
基於列車-橋梁時變系統隨機振動分析理論，按照橋上列車脫軌安全系數和司機、旅客舒適度的要求，對鐵路連續鋼桁梁橋橫向剛度限值-橋梁容許極限寬跨比b / l進行了分析，對鐵路連續鋼桁梁橋的設計具有一定的參考作用。 -
The prestressed drainage aqueduct of through open - web truss arch structure is widely applied to cross the main canal of the mrp. it is important and significative to study the aqueduct ' s structure design and reliability thoroughly
預應力下承式空腹桁架拱渡槽在總乾渠排水建築物中被廣泛採用，其結構設計和安全可靠性是一個非常重要且值得深入研究的問題。 -
The main work of this paper was as fellows : ( 1 ) generalized the development of pre - stressed steel structure in our nation and abroad, and pointed out the main problem in practice ; ( 2 ) presented the mechanism of pre - stressed steel structure and revealed its applicable range ; ( 3 ) established the optimization design model for pre - stressed steel structure, which accounts for constraints on stresses and displacements of structure ; ( 4 ) brought forward the optimization design method, which combined linear programming and the principle of full restriction, through which we can obtain the magnitude of each time pre - stress and the optimized sections of each members of structure ; ( 5 ) analyzed the best times of pre - stress and pointed out that 2 ~ 3 times is preferable ; ( 6 ) conducted optimization design on large - space steel roof, horizontal parallel steel truss with local cables, horizontal parallel steel truss with global cable, and ultra - static steel truss, the result of which indicated that the multiple pre - stress structure is very economic ; ( 7 ) compared different schemes of cable placement for horizontal parallel steel truss, and the results showed that the local cable only unloaded the second girders, but had no response on the first girders and stomach poles, while global cable could unload the second girders and the stomach poles outside of turning point of cable, thus proving that global cable is more economic than local - cable
本文的主要工作是：對國內外預應力鋼結構的發展歷史及現狀作了綜述和總結，指出當前預應力鋼結構工程實踐中存在的主要問題；闡述了預應力鋼結構的受力機理，並指出預應力鋼結構的適用范圍和特點；在考慮結構應力和變位約束的條件下，建立預應力鋼結構優化設計模型；提出多次預應力鋼結構優化設計方法和步驟，採用線性規劃和滿約束準則相結合的優化方法，可優化設計出施加的每一級預應力的大小，並得到結構各部分的優化截面；對多次預應力最佳的施加次數作了分析，並建議以2 3次為宜；為驗證文中理論和方法，分別對大跨多次預應力鋼屋架、局部布索的水平平行弦鋼桁架、整體布索的水平平行弦鋼桁架和局部布索的超靜定鋼桁架等算例進行了優化設計，經濟效益明顯；對水平平行弦鋼桁架的幾種施加預應力的方案進行比較，對于局部布索，預應力只對下弦起到卸載作用，對上弦和腹桿基本不起作用；而整體布索預應力除對下弦卸載外，對索折點以外部分腹桿也起到卸載作用，經濟效益好於局部布索。 -
The aim of study is getting through the engineering project successfully. at first, the integral bearing capacity of slts is calculated and analyzed. using precise finite element analysis, operation state of latticed truss structure during the elastic phase can be mastered, and key inspect regions, namely weak enduring region, can be seek through results analysis
研究工作以工程項目的順利完工為最終目的，所採取的研究路線為先就整個網架結構的整體承載性能出發，通過精確的有限元分析方法掌握結構在彈性工作階段的工作狀態，並通過分析計算結果尋求關鍵監測區域，即網架結構承載的薄弱環節。 -
A plate - beam composite element suited to calculate through steel - truss composite bridges
一種適用於下承式鋼桁結合橋計算的板梁組合單元 -
The cfst x - type arches improve the lateral stability by sloping the arc ribs, so it is ofen used in the designs of cfst arch bridge with small ratio of the width to the span. tongwamen bridge is a half - through cfst arch bridge, its span is 238m, and the width of its roadway is 10m, so the truss ribs in - plane is sloped into x - shapc to improve its lateral stability. as the cfst x - type arches with longest span all over the country presently, the design of tongwamen bridge can be used for reference of adopting cfst x - type arches in the design of arch bridges with small ratio of the width to the span
鋼管混凝土x型肋拱橋是一種利用拱肋側傾來提高其橫向整體穩定性的橋型，在寬跨比較小的鋼管混凝土拱橋設計中應用較多。浙江銅瓦門大橋是一座中承式鋼管混凝土無鉸拱橋，跨徑238m ，橋寬10m ，拱肋為平面桁架形式，所以採用了x型拱肋以提高其橫向穩定性。作為國內目前跨徑最大的鋼管混凝土提籃拱橋，該橋的建成對我國今後長大跨徑小寬跨比鋼管混凝土拱橋採用提籃拱具有借鑒意義。 -
Through researching practical engineering on anti - earthquake analysis between the concrete structure and storey - between truss, this paper compared dynamic period and seismic behavior of this two kinds of structures, calculated force and deflection, put forward into the storey - between truss is an economic, reasonable, practical structure, it can conveniently construct and save space
比較了這兩種結構的自振周期、振型，並對其內力（主要梁）的內力、變形進行驗算，說明在地震地區，選用層間桁架結構比混凝土框架梁具有更好的抗震性，同時具有經濟合理、方案可行、方便施工、節約空間的特點。 -
Based on the system engineering theory, and through detailed analysis of economic techniques of the engineering work plan examples of the common used long span steel truss structures, utilizing the sequenced layer analysis, the current paper will establish the long span engineering work plan index system. also by the fuzzy mathematical principles, it builds multi - layer fuzzy complex mathematics judgment and calculate the weight coefficient of each index by application of fuzzy power duality method ; and based upon the experts investigation method builds each index judgment matrix. finally applying the current popular update system tool - power builder 8. 0 developed the " optimization system of ( construction ) fuzzy work plan " to solve and carry out the multi - layered fuzzy combination judgment ; then step on the analysis and research on the reliability of the optimal solution for further achievement of the final objective of the fuzzy optimization in selecting the construction work plan of long - span steel truss realization
本文以系統工程學的理論為基礎，通過工程實例對常用大跨度鋼桁架結構施工方案進行詳細的技術經濟分析，運用層次分析法建立起大跨度鋼桁架結構施工方案的指標體系，利用模糊數學原理建立了多層次模糊綜合評判數學模型，採用模糊權重二元對比法計算出各指標的權重系數，並採用專家調查法建立各指標的評判矩陣，利用目前最流行的工具系統- powerbuilder8 . 0編制了《建築施工方案模糊優選系統》求解計算，進行多層次模糊綜合評判；調整權重和隸屬度，對數學模型最優解的可靠性作了進一步的分析和研究，從而達到模糊優化選擇大跨度鋼桁架結構施工方案的最終目的。 -
Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result
西安理工大學碩士學位論文在水平地震作用下，並考慮風荷載組合，分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系，通過改變結構參數，運用空間有限元方法，進行地震作用計算。系統地分析研究「結構振型」 、 「振動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ，以及「構件內力」 。結果表明:在等面積原則下，異型柱代換矩形柱后，結構剛度增大，側向位移明顯減小，地震反應力略有增加，框架柱軸壓比最大增幅小於8 % ，結構整體抗震性能有所提高;當異型柱肢長肢厚比小於等於3 . 6時，結構有利於抗震;水平地震作用力與整體坐標夾角為0度時，結構地震作用效應較大，屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐，側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小，構件內力增大適中，是一種抗震性能優越的結構體系:在抗震設防烈度較高地區（ 8度）和抗震不利的建築場地（ m類場地） ，採用異型柱結構體系時，應盡可能減輕結構自重，降低地震作用力;分別採用「振型分解反應譜」法和「時程分析」法進行地震作用計算，兩種方法所得結果基本一致。 -
Through the analysis of receiving force performance of staggered truss frame, this paper clearly proposed the principle that nodes construction scheme should be defined according to the plane truss form for the first time
本文通過對錯列桁架體系受力性能的分析，第一次明確地提出了體系節點構造應該根據平面桁架形式來確定的原則。 -
The rigid and flexible trusses were simulated respectively. the dependences of the attitude angle degree and angle velocity of the spacecraft on the rigid and flexible situation in the deployment process and drive velocities loaded on the joints were derived. the frequency - amplitude characteristic curves were gained from the attitude angle velocity curves of the deployment of the flexible truss and locked flexible truss after deployment through the fast fourier transition ( fft ) method
文中給出了展開前後的動力學固有特性;對展開過程中分別為剛性桁架和柔性桁架兩種情況進行了模擬計算，對比了兩種情況的桁架展開過程中衛星姿態角及姿態角速度的變化;比較了柔性桁架不同展開速度對衛星姿態角及姿態角速度的影響;分析了柔性桁架展開過程對衛星非展開方向的姿態角度及角速度的影響及原因;對柔性桁架展開過程中及展開鎖定后的衛星姿態角速度的變化曲線進行快速傅立葉變換，得到柔性桁架展開過程即展開鎖定后衛星姿態角速度的頻幅特性曲線。 -
Based on the catastrophic characters of the whole strain energy in truss structural instability, the relationship between the whole strain energy and the stress rate in the link element was educed, and the stress rate criterion for judging the instability of truss structures was built up through analyzing the changing law of stress rate
基於桿系結構發生動力失穩時的總應變能突變特徵，推導總應變能同桿單元應力變化率之間的關系，並分析應力變化率的變化規律，建立了判定系結構動力失穩的應力變化率準則。 -
Behavior of the confinement mechamsm is also different. before obvious bond deterioration of the beam rebars passing through the joint core occurs, the shear is mainly transfered by the truss mechansim. when the bond deterioration occurs comprehensively, the shear transfered by the truss mechamism is reduced significantly, the majority of the shear is transfered by the diagonal strut
當貫穿節點的梁筋未出現明顯的粘結退化之前，節點作用剪力主要通過街架機構傳遞，斜壓桿機構傳遞的剪力和約束機構發揮的作用較小；當梁筋全面出現粘結退化以後，行架機構傳遞的剪力明顯降低，作用剪力主要由斜壓桿機構傳遞。 -
On the basis of the design and calculation of such space truss system, this paper has analysed and summed up the experiment dataes of the wind tunnel test and made a deeply research and analysis on this kind of structure which undergoing complicated wind load. compare the wind load values which gained by calculating according to load criterion and the wind tunnel test separately and then analyze and compare the two different results got by static wind load and dynamatic ones separately. at last, analyze the two outcomes through these two different methods which in virtue of finite element program midas
本文在鹽田碼頭閘口的工程設計基礎上，分析總結了對該建築物進行風洞試驗的試驗數據，並對利用風洞試驗數據計算所得風荷載值與按規范計算所得的風荷載值進行了比較，然後藉助有限元軟體midas對該結構在靜力風荷載作用下和動力風荷載作用下的節點位移進行了計算分析和比較。 -
In this text the basic theories and the applied truss of the network monitor and control the system are discussed firstly, the inevitability is also analyzed about monitor and control network facing with the frequent safety threaten. then i research each safety aspect of network remote monitor and control system through academic study, engineering practice and a lot of simulation experiment. at the same time i research deeply and systemically in the popular virus problems and the dangerous hacker ' s attack
本文討論了網路監控系統的基本理論和應用構架，分析了監控網路面臨經常的安全威脅的必然性，然後通過理論研究、工程實踐以及大量的模擬實驗，對網路遠程監控系統安全性問題的各個方面進行了廣泛的研究，對其中最常見的計算機病毒問題以及最可能造成嚴重危害的黑客攻擊問題進行了深入系統的研究。 -
Because the reality modes of structure mostly are vertical direction arch truss vibration, so model vibrations in outer plane are restricted in analysis. in experiment, the front three modes of vertical directions are achieved through vibration exciter in the structure
由於結構實際振型是以豎直方向的桁架振動為主，因此在分析時將模型平面外振動進行了約束，試驗中通過對結構進行激振，利用共振曲線測得結構豎直方向前三階振型。 -
According to the relation, three - dimensional parametric model of hoop truss is developed. then through re - development, we can get two - dimensional drawings immediately from the three - dimensional model, which can be used for production
另外，通過對二維工程圖的二次開發定製，實現了從三維實體模型快速生成符合國家標準的二維工程圖紙的功能，進而指導實際的生產加工。 -
Through analysis in theory and calculation on real cable - stayed bridges, following conclusions have been reached : 1 ) methods of modeling cable - stayed bridges for nonlinear finite element analysis are reasonable and effective and truss and beam element has enough accuracy
通過理論分析和實例計算，本文得出了以下結論： 1 ）本文在桿單元中用等效彈性模量來考慮斜拉索的垂度，考慮梁和塔中的梁、柱效應以及修正幾何剛度矩陣是合理的、有效的。 -
Mega - truss - suspended steel tall buildings provide abundant design freedom to architects, also promote their creativities. take advantage of the suspended floor, space hole can be placed through building in variable form and at different position
由於該結構用懸掛體系構成內部樓層，可實現在空間不同位置設置大型孔洞，通過調整孔洞的位置、形狀、大小，可顯著減小結構的風荷載和風振響應。
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