梁下桁 的英文怎麼說
中文拼音 [liángxiàhéng]
梁下桁
英文
underbeam girder-
Modal identification of steel truss bridge based on ambient excitation
基於環境激勵下鋼桁梁橋的模態識別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。It " s function is to receive laser signal and to sent out the electric signal ; the second is the monolithic processor system. this part function is to pick up the electric signal sent by ccd detector and to compute the digital signal to get the data where the laser beamed, then sent the data to pc computer ; the third part is the control interface for people to control whole measurement process
本文介紹的桁架梁撓度實時檢測的電荷耦合( ccd )測量系統由ccd接收系統,單片機測量系統和pc機測量軟體三部分組成。該系統採用線陣ccd為傳感器,以8031為控制核心,在單片機系統和pc機軟體之間建立了可靠的通信,能在比較惡劣的條件下獲取、顯示、存儲、處理和比較桁架的撓度值。All the researched results prove the era method is steady and suitable for those structures : spacecraft 、 beam - plane structure 、 truss structure 、 frame 、 bridge, etc. on the basis of the consideration of the above, the major job of the article is to discuss how to identify the parameters of the long - span structure with the method of era under the action of the wind loads
但是,國內外已有的相關文獻,對于下面的結構均進行了相關的研究,如航天器、梁板結構、桁架、框架、橋梁等。基於以上考慮,本文主要工作,就是探討在風激勵荷載作用下,如何用era演算法識別大跨空間網格屋蓋結構的模態參數。Thereinto, the transfer beam and transfer truss are used, while for the high - rise building with complex figure, only the transfer slab can be used. because there are few studys on transfer thick slab at present, this paper will discuss the problem
使用較多的是梁式和桁架式轉換層,而對于上下柱網軸線錯開的體型復雜的商住樓,則只能採用厚板結構轉換層,由於這方面的理論研究還不多,本文就此展開討論。Under beam girder
梁下縱桁Thea, aimed at different situation and with the combination of the compatibility truss theory and limited balance principle and the truss - strut model, the shear strengthening theoretic formula for the beams under concentrated load is put forward. ground on the test data and real engineering, the simple design formula is afforded
然後,作者以桁架一拱模型和軟化桁架理論為基礎,綜合極限平衡原理,考慮了拉應變存在條件下混凝土抗壓強度的軟化,針對不同加固情況推導了集中荷載作用下的矩形截面約束梁的抗剪加固理論公式。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Based on a series of testing, examination, research and analysis conducted how to lift the speed on nanking section, jinhu road, we explore the possibilities of solving the obstacles of nanking segment of bridges for realizing railroad speed - lift soon due to its subframes and steel plate beams. we produced authentic and convincing data. 3
通過對京滬線南京段部分橋梁為實現鐵路提速而進行的一系列實驗、檢測、研究和分析,探討了成為制約干線提速瓶頸的下承鋼板梁及半穿式鋼桁梁進一步提高運行車速的可能性,為此類結構的橋梁提速提供了可信的依據。Wan zhou yangtze river bridge is the establishing large span steel truss bridge now, and the property of it is the lower stiffness of the main girder. when the speed is high, the analyses and the vibration control of vehicles and bridge are very important, especially the dynamic lateral response of the system
萬州長江大橋是目前在建的大跨度鋼桁架拱橋,其特點是主梁結構剛度較小,在高速行車速度下,對起車橋耦合振動分析及其控制尤其是車橋系統橫向動力響應研究則尤為重要。The paper presented a large annular cantilever beam string stadium roof structure using the theory of beam string structure. the stadium roof structure is a novel structure that is reasonable in bearing force by using the character of the tendon and beam fully. the struts in the structure avoided enduring big moment, moreover the pre - stress upper chord tendon and the annular beam work together to resist upward and downward load, as embody the structure ' s artifice and wonderful space mechanical property
本文利用張弦梁原理,給出了一種大型環狀懸臂型張弦梁挑蓬結構,該種體育場挑蓬結構新穎,充分利用了拉索和立體桁架受力的特點,使得結構受力更加合理,避免了柱子承受較大的彎矩,上弦索的預張力和圈樑使結構共同作用抵抗上下荷載,更體現了結構的巧妙和良好的空間受力性能。In staged construction process, study is primarily aimed at the truss load resistance capacity and flexural performance under construction and design load, combination performances of steel trusses in conjunction with concrete beam, the vertical displacement difference of two steel trusses with different span and their lateral stability, the glide displacement of the steel truss end during construction, the load resistance performance of steel trusses and concrete structure at the designed load, and the extreme limit loads and the breaking appearance of the combined steel trusses
主要研究了在階段施工過程中,鋼桁架在施工荷載及設計荷載下的受力性能和變形能力;鋼桁架與混凝土梁板的共同工作性能;兩榀不等跨鋼桁架在整體受力下的豎向位移差及其對結構的作用和側向穩定性;鋼桁架端部在施工階段的滑動情況;使用階段鋼桁架及其端部混凝土結構的受力性能;組合鋼桁架結構的極限承載力和破壞形態。The suspended structure was designed to be truss stiffened, and its erection was carried out without disturbing heavy sea traffic reaching about 1400 ships per day
大橋加勁梁為桁架式,架設時沒有干擾橋下日通行量達1400艘的船舶交通。Compared to box structure truss structure has much peculiarity such as weight, material and deform. so many kinds of crane use truss structure as their structure form
桁架結構較之箱梁結構由於它的自重輕、用料省、同等重量下剛度大、減振性能好等諸多特點被廣泛應用於各種起重設備中。分享友人