The displacement time history is measured using the displacement sensor 用位移傳感器量測同一點的位移時程。
displacement time graph 位移時間線圖
To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high-position transfer story structures . first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived . then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo-dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete . seismic behaviors are analyzed, including inter-story displacement, base shear-displacement skeleton curves, and equivalent viscosity-damping curves . a program is programmed to carry out the elasto-plastic dynamic analysis, and displacement time-history curves of the two models are derived . the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors . it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures . finally, some design suggestions are put forward, which can be referenced by similar engineering 為滿足建筑物大空間和靈活隔斷要求,在高位轉(zhuǎn)換層結(jié)構(gòu)中采用迭層空腹桁架結(jié)構(gòu).首先分析了其受力性能,得出了空腹桁架各構(gòu)件合理的截面剛度以及布局形式.然后結(jié)合一實際工程,進行了兩榀迭層空腹桁架轉(zhuǎn)換結(jié)構(gòu)模型(1:8相似比)的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架,另一榀配置了預(yù)應(yīng)力和鋼骨混凝土,對比分析了兩模型的層間位移比、骨架曲線以及等效粘質(zhì)阻力系數(shù)等抗震性能的比較,并進行了彈塑性動力分析.試驗和分析結(jié)果表明,配置預(yù)應(yīng)力和型鋼混凝土的迭層空腹桁架轉(zhuǎn)換結(jié)構(gòu)具有良好的抗震性能,可以成功地解決迭層空腹桁架作為轉(zhuǎn)換層結(jié)構(gòu)所產(chǎn)生的弊端問題,最后對這類轉(zhuǎn)換層結(jié)構(gòu)提出了相應(yīng)的設(shè)計建議
Based on selective learning of data mining and analysis of characteristics of data or information in rock mechanics and engineering, some data mining algorithm models are applied to analysis problems of rock engineering and the research is combined with practical engineering projects . relevance analysis to slope rock rheological test, rock mass quality assessment of dam foundation rock mass and displacement time series forecasting analysis to underground opening are performed by using data mining technique in this paper 本文在較全面的探討現(xiàn)有數(shù)據(jù)挖掘技術(shù)以及分析了巖體工程有關(guān)數(shù)據(jù)和信息特點基礎(chǔ)上,結(jié)合具體工程問題,基于數(shù)據(jù)挖掘技術(shù)進行了邊坡巖體流變試驗成果的相關(guān)性分析、壩基巖體的巖體質(zhì)量評價分級研究和地下洞室監(jiān)測位移序列時序預(yù)測分析。