Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account
依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型,對中國古代木結構中的典型構造如:
柱腳在礎石頂面平擱簡支、
柱架榫卯連接、
柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究: (一)通過木
柱石礎靜摩擦試驗,測定了
柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律; (二)通過單
柱承載力試驗,測定了古建築中木
柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量; (三)通過
柱架低周反復荷載試驗,測定了
柱架的抗側移剛度、
柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、
柱架及榫卯的極限承載力和極限變形、及榫卯減振參數; (四)通過斗?低周反復荷載試驗和受壓試驗,測定了古建築木構件與木構件間摩擦系數,斗?抗側移剛度,斗?恢復力特性及滯回曲線,斗?抗壓極限承載力及受力變形規律; (五)通過抬梁式殿堂間架模型振動臺試驗,測定了殿堂木構架結構自振周期,地震反應振形、阻尼特性及阻尼比;按結構分層特點對
柱腳、
柱頭和斗?層上的屋蓋的地震反應採用多點同步測量,對
柱根
滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。
The design and machining technology process of its molding part including the front moulding plate 、 front mould kernel 、 back mould plate 、 back mould kernel 、 back mould set piece 、 incline guide pin 、 slide steatite etc, and the choice and calculation of technology parameters of the impotent part, the design process of extrusion outfit, inject system and other makeup are specified in detail ; test and product have been introduced
詳細地敘述了模具成型零件包括前模板、前模仁、后模板、后模仁、后模鑲件、斜導
柱、
滑塊等的設計與加工工藝過程,重要零件的工藝參數的選擇與計算,推出機構與澆注系統以及其它結構的設計過程,並對試模與產品缺陷作了介紹。
Intercalation and assembly of supramolecular materials of glutamic acid pillared layered double hydroxides
谷氨酸
柱撐水
滑石超分子結構層
柱材料的插層組裝
The paper analyses the stress and relative motion of piston / cylinder and swash plate / slipper matching pairs in water hydraulic pisto n pump, based on which the proper experimental research method is determined
對水壓
柱塞泵
柱塞、
滑靴摩擦副的受力和相對運動形式進行了分析,確定了摩擦副合理的試驗研究方法。
Kinematics of the axial piston pump with swash plate yoke ' s angle were analysed. there was a lot of analysis about relative movement between piston and cylinder block, between piston and swash plate, between slipper and swash plate. at same time, the movement simulation curves were given
對軸向
柱塞泵進行運動學分析,重點是對
柱塞與缸體之間,
柱塞與斜盤之間以及
滑靴與斜盤之間的相對運動進行分析,並且分別給出了模擬曲線; 2
Besides establishing the calculation formulas of the support force of the swash plate, the contact load and the friction force between piston and cylinder block, the interaction force between piston and slipper, and the heel over moment of slipper, the relation between each machinery parameter and all these forces were discussed. 3
分析了
柱塞和
滑靴的受力情況,並推導出斜盤支承反力,
柱塞與缸孔間的正壓力和摩擦力、以及
柱塞與
滑靴間的作用力和
滑靴傾側力矩的計算公式; 3
Influence of temperature on cam - tappet lubrication in an internal combustion engine
挺
柱潤
滑的影響研究
Preparation of the tartaric acid column pillared zn - al layered double hydroxides
手性陰離子
柱撐水
滑石的制備和表徵
As one of the four important parts of water hydraulic axial piston pump, the design of sliding shoes friction matching mainly takes hydrostatic bearing
作為水壓軸向
柱塞泵的四個關鍵組件之一,
滑靴摩擦副的設計主要採用靜壓支承的方法。
Ma yan ? ying, liu jia ? qi. experimental investigation of oil film of port plate / cylinder block in axial piston pump j. lubrication engineering, 1999, 3 : 3539
鄭煒, ?有雄,魯寶香.軸向柱塞泵配流副油膜的實驗研究j .潤滑與密封, 1995 , 5 : 3739