拱針法 的英文怎麼說
中文拼音 [gǒngzhēnfǎ]
拱針法
英文
slistitch-
Abstract : the mechanical analysis for arch bridge with flat hinge joints is a mechanical problem with non - linear boundary. mechanical analysis of methods at present is not clear, which can not calculate the arch bridge with changeable section and section with complicate shape. in this paper, the new method used to get the section resistance coefficient k is presented, the iterative procedure is established to calculate the internal forces of arch bridge with flat hinge joints, and the computational example is given. the method can apply to the arch bridge with any numbers of flat hinge joints and any shape section
文摘:平鉸拱橋結構的受力分析屬于邊界非線性力學問題,目前的一些方法受力分析不太明確,對變截面、復雜形狀截面等平鉸拱橋無法進行計算.針對這種情況,提出了確定平鉸截面抗力系數k的新方法,建立了計算平鉸拱橋內力的迭代演算法,並進行了實例計算,研究結果表明,這一方法對具有任意個平鉸、任意形狀截面的拱橋結構是適用的Aimed at the vermiculation characteristcs of the move - in - mud robot, its location system performs the orientation of the move - in - mud robot by means of relative oriention, using the attitude information and displacement information
其定位系統針對拱泥機器人以蠕動方式運動的特點,利用機器人的姿態信息和拱泥頭位移信息,採用相對定位的方法實現拱泥機器人的定位。The system reliability analysis method of arch - bridge is presented based on the failure model of arch rib, which is the most important failure model of arch - bridge. the control sections of arch rib in the analysis of bearing capacity reliability are determined according to the " five - spot coincidence method ", which is often used in arch - bridge design with chinese code
針對拱式橋結構體系中的主要受力構件?拱肋進行分析,借鑒拱橋設計中的「五點重合法」確定研究截面,進而根據該截面的不利情況確定荷載布置型式。Because of limit that invisibility and discommodious in anciently program, based on the method of limited rigid body equilibrium, using visual program language vb and connect autocad, realize plane and solid programme of abutment analysis of arch dam, provide alternation interface for designer. presently, our country constructing and will construct high 300m arch dam, it is important to judge security based on nonlinear fem analysis. basic theory of nonlinear fem analysis and its realization in ansys were studied
針對傳統程序的存在問題,非直觀、不易操作特點,以剛體極限平衡法為基本分析方法, visualbasic作為操作平臺,結合autocad圖形軟體,完成了剛體極限平衡法二維、三維壩肩穩定分析程序設計,使之具有直觀性,可視性、易操作性,為設計人員提供了具有友好界面的工程使用軟體目前我國西部在建和將建一批300m級的高拱壩,運用有限元方法計分析拱壩穩定性、評判大壩安全度十分有必要。The contents include : based on the previous research and the data of experimentations, the author researches and develops a kind of satisfactory semi - empirical formula of nonlinear temperature distribution, and calculates the temperature stress of rigid - framed arch bridge by the fem. the temperature effects of bridge structure by annual and sunlight temperature difference are discussed, it indicates that the temperature effect of annual temperature difference is small but the temperature effect of sunlight temperature difference is great and the temperature stress along beam depth resulted from sunlight temperature difference is nonlinear. with the comparison between the temperature effects of different position of bridge, the results show that where the section of bridge is small, the temperature stress of it is large
本文主要包括以下內容:從理論上研究並結合實測資料發展了一種比較理想的半經驗溫度場非線性分佈公式,並將有限元方法應用於剛架拱橋結構溫度應力的計算中,對橋梁結構進行整體溫度應力分析;討論了年溫差和日照溫差引起的橋梁結構的溫度效應,表明年溫差引起的溫度效應較小,而日照溫差引起的溫度應力較大且沿梁高呈非線性分佈;分析比較了橋梁結構各個部位的溫度效應的大小,可知截面越小溫度拉應力越大,受力越不利;並對箱梁結構由於構造不同引起的縱向與橫向的溫度效應大小進行了探討,發現在頂板下緣也會出現相當大的溫度拉應力,並且梗腋的存在反而增加了頂板底部的溫度拉應力;還對幾種相近的剛構式橋型的溫度效應進行了分析對比,總結了這些橋型針對溫度效應的優劣,並提出相應的針對性措施。Testing methods for bagging of woven and knitted fabrics
機織物及針織物局部拱脹的試驗方法On basis of the character of the structure at the stage of construction, the stress balanced method was developed to decided the forces of cables and the stresses of the arch rib sections, which is according to the normal stress controlling conditions on the top and bottom of arch rib section and considering the influence matrix
針對這一受力特點,本文根據拱肋截面上、下緣應力平衡條件及影響矩陣的概念,發展了應力平衡法,用以確定拉索的合理索力,從而使拱助結構受力合理並具有理想的線形。Because the prediction accuracy of ann and fuzzy system algorithm is insufficient for underground powerhouse rock surrounding stability, the method of accurate online support vector regression ( aosvr ) was applied to study the evolution law for underground powerhouse rock surrounding displacement
摘要針對目前廣泛使用的模糊系統和神經網路預測方法在地下結構圍巖變形預測中的缺陷,提出一種精確在線支持向量機( aosvr )並將其應用到水電站地下廠房開挖過程中頂拱圍巖的變形預測。In accordance with the problems existing in the present research, taking milky way mcar as the object of study, some creative work has been as follow : 1. a systematic introduction was given about the shaping method, characteristics and developing history of mcar. the present experimental and theoretical researches situations and the preliminary conclusions were summarized
本文以銀河拱型波紋鋼屋蓋為研究對象,基於國內外的研究及應用狀況,針對目前所存在的問題,主要進行了如下一系列有意義的研究: 1 、系統的介紹了金屬拱型波紋屋蓋的成型方法、特點、發展歷史,綜述了這種新型結構形式的理論、試驗研究現狀。On the base of site monitoring on several multi - arch highway tunnels, this paper introduces some site monitoring methods about the force of reinforcing steel bar, the exterior and interior strain of concrete and the displacement of the wall, which aim at the monitoring of middle wall of multi - arch highway tunnel
在多座連拱隧道現場監測工作的基礎上,文章主要介紹了主筋軸力量測、混凝土表面應變量測、混凝土內部應變量測,以及位移量測等針對連拱隧道中隔墻的現場監測方法,並結合中隔墻主筋軸力量剛,給出現場監測及分析實例。Steel structure of light - weight buildings with gabled frames is a widely used steel structural style in china at present. this paper starts with the deficiency of the specificaion in calculating the effective length factors of gable portal frames. when the gable portal frame subjected to the vertical uniform loading, it conducts the arch effect ? 1. rafter axial force is large when the slope of rafter is big
門式剛架輕型房屋鋼結構體系是目前廣泛應用的一種結構形式,本文從規范中門式剛架柱的計算長度系數取值的不足出發,針對山形門式剛架在豎向均布荷載作用下產生的拱效應? ? 1 、斜梁傾角較大時產生較大的梁內軸力; 2 、產生跨變效應; 3 、高跨比較小的山形門式剛架會發生躍越失穩,採用整體分析的方法對山形門式剛架的穩定進行了分析。Combining the study characteristic and the current construction method of the bi - arch tunnel in domastic and aboard, the paper deeply study the three heading construction method and the benching tunneling construction method
結合目前國內外對雙連拱隧道的研究特點以及國內外對雙連拱隧道施工方法的現狀,本文針對三導坑法和上下臺階法進行了較為深入的研究工作。Combined with that the influence of the prestressed tendon layout on mechanics characteristic of three - span prestressed concrete deck arch bridge is taken into account in these methods, and demand of internal force and displacement in design is satisfied by using upward and downward eccentric layout of prestressed tendon
這些設計法針對該類橋型的特點,利用在拱頂梁中分別布置一定數量的上下偏心的預應力筋來優化結構的內力和滿足各部分的位移限制要求。In the light of the characteristics that the joint parts between the concrete rigid - frame structure and steel box arch ring of caiyuanba changjiang river bridge in chongqing mainly work as the compressive elements, the design of the parts is carried out by means of improving the steel plates, and the design methods and local details design of prestressing steels are put forward in order to ensure the safety of the bridge structure
摘要針對重慶菜園壩長江大橋混凝土剛構與鋼箱拱接頭主要為受壓構件的特點,採用改進鋼板形式進行設計,提出預應力鋼筋的設計方法及局部細節設計,確保結構安全可行。In this paper improved genetic algorithm is combined with computation of buckle - cable adjusted. and the genetic optimization model based on real number encoding is introduced. in the established model, rank - based fitness assignment selection and dynamic penalty strategy are introduced to handling restriction problems
本文針對大跨度鋼管拱橋合理成橋狀態的確定和扣索索長調整問題,將改進的遺傳演算法嵌入到拱肋吊裝的結構計算中,採用實數編碼技術,引入了基於排序的適應度分配選擇方式,將動態罰函數法應用於處理有約束的最優化問題。分享友人