桁跨索 的英文怎麼說
中文拼音 [héngkuàsuǒ]
桁跨索
英文
peak span-
The large - span annular open - web cable truss structure is a new type of tensile structure based on cable dome. especially it is suitable for awning structures of palestra. little research work on this type of structure has been done abroad, and at home the research is blank
大跨度環形空腹索桁結構體系是繼承于索穹頂結構、近年來才出現並應用於實際工程的新型結構體系，具有顯著的特點，特別適合應用於體育場的罩棚結構。By using the singular - value - decomposition method, a little program has been developed to get the self - equilibrium stress mode of several typical cable truss structures
本文從pellegrino提出的奇異值分解法出發，利用自行開發的程序，求解了幾種典型的大跨度空腹索桁結構的自應力模態。First, based on the reading of a lot of literatures, a view of the history of tensegrity structures and cable dome structures is put forward in this paper, as well as the expatiation of the architectural and structural property on the large - span annular open - web cable truss structure. several projects are also presented
首先，在大量查閱國內外文獻的基礎上，本文回顧了張拉整體以及索穹頂結構的發展歷史，闡述了大跨索桁結構在建築和結構上的特點，介紹了幾項典型的工程。The geometric nonlinear analysis of three types of large - span annular cable truss structures is put forward by using commercial fem program. their static properties in deferent load case are concluded, and some suggestions for actual projects are also presented. base on the prime realization of its static property, parameter analysis of its static property is done consisting of deferent number of truss, deferent height of truss, deferent scale of height of masts, deferent boundary condition and deferent magnitude of pre - stress in deferent load case
本文利用通用有限元軟體ansys對大跨度環形空腹索桁結構體系中三種典型的結構（即內外圈都為圓形、外圈圓形內圈橢圓形、內外圈都為橢圓形的三種外形的結構）進行了幾何非線性分析，總結出各自在不同荷載工況下的靜力性能，並提出一些有實際工程意義的建議。Dynamic analysis of this bridge showed that the bridge ' s seismic response was small and flutter critical wind speed was improved to a high level
最後對該種橋型的空氣動力穩定性進行了評估。證明大跨索桁橋是一種抗風性能優良的新橋型。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。分享友人