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。
Frame supported short pier shear wall structure with transition floors is a useful structure pattern with good ability in resisting seismic load. the lower part is frame with large opening column - grid while the upper part uses short pier shear wall with wide openings. so this structure decreases the difference between stiffnesses of lower part and upper part
帶梁式轉換層的短
肢剪力墻結構,其下部結構為大開間的
柱網框架,上部結構採用開洞較大的短
肢剪力墻,有效地降低了轉換層上下結構之間的剛度差異,因而是一種抗震性能較好的結構型式。
Short - limbed wall ( slw ) is defined as the shear wall with a ratio of section depth to width ( rdw ) being 5 - 8. usually, the section width is 200 - 250 mm, and the depth is between 1 000 and 2 500 mm
短
肢剪力墻是指墻
肢截面高度與厚度之比為5 8的抗震墻,通常墻厚不小於200mm ,
肢長在1000 2500mm之間,它介乎于異形框架
柱和一般剪力墻之間。
It is found by comparison that as the structural forms of special - shaped columns and short - shear walls are used, the structures should be arranged reasonably so as to meet the needs of lateral stiffness, and axial compression ratio should be controlled strictly so as to meet the needs of constructional reinforcement to prevent the probably curling and shear failure for the purpose of meeting the needs of the construction of small high - buildings
對比討論發現:採用鋼筋混凝土異形
柱和短
肢剪力墻的結構形式時,應當進行合理的結構布置以滿足結構整體抗側移剛度的要求,同時嚴格控制豎向構件軸壓比並滿足配筋構造以防止構件可能出現的翹曲和剪切破壞,這樣才能同時滿足小高層住宅對建築和結構的需要。
The design of special - shaped column and short - leg shear wall structure is comparatively complicated. the research of seismic property is not mature. meanwhile, comparison and analysis of the economical indexes of the above three structure are not enough, which gives a bad influence on people ' s cognition of the seismic and economical property of residence structure and is not good to people ' s hold of the application of residence
異形
柱及短
肢剪力墻結構的設計比較復雜,抗震性能研究不夠成熟,同時有關三種結構的經濟指標比較分析不多,影響了人們對住宅結構體系抗震及經濟綜合性能的認識,不利於業主和設計人員對住宅結構體系應用范圍的把握。
After studying a lot of research papers on special - shaped column and short - leg shear wall structure, i select a typical short - leg shear wall residence structure in hefei. rectangle frame, special - shaped column and short - leg shear wall structure are designed respectively by use of pkpm software according to the present design code
因此通過調查研究,選擇合肥某住宅小區典型的短
肢剪力墻住宅結構為研究對象,根據現行的建築結構設計規范,利用pkpm系列軟體,分別設計成普通矩形
柱框架、異形
柱框架和短
肢剪力墻結構。
Battened steel column
雙
肢鋼
柱
Double component concrete column
雙肢柱26