earthquake period 中文意思是什麼

earthquake period 解釋
地震期間
  • earthquake : n. 1. 地震。2. 大變動,動亂。
  • period : n 1 時代;期;時期;期間;階段。2 〈the period〉現代,當代。3 周期;【地質學;地理學】紀。4 終結...
  1. In the second chapter, the basic theory and method of how to use far - field body - waves to invert for the seismic moment tensor were expatiated systematically. the moment tensor solutions of the march 25, 1998, antarctic plate earthquake ( mw = 8. 1, iris ) and the june 4, 2000, southern sumatra, indonesia, earthquake ( ms = 8. 0 ) were inverted using teleseismic body waves recorded by long period seismograph stations of the iris global seismic network

    並用iris全球地震臺網的遠場體波資料反演了1998年3月25日南極m _ w8 . 1 (據iris )地震的矩張量和2000年6月4日印度尼西亞蘇門答臘南部m _ s8 . 0地震的矩張量。
  2. The appropriate maximum stories and the appropriate maximum height of buildings are determined by using the various of control index, such as period, shear - compression ratio, allowable value of drift angle etc when earthquake fortification intensity is 8 degree

    用各項控制指標,如周期、剪壓比、軸壓比、層間位移角等進行對比分析,給出在8度區該結構的最大可建造層數和最大適用高度。
  3. 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。
  4. According to composition and structure feature of jinjiang landslide analysis, the author considers it was a enormous landslide with the characters about multi - period ( total four slides ) and overlaying, its mechanism of deformation failure attributed to a representative sliding - bending mode in the consequent slope, the stability calculation indicates that no matter what the whole landslide would not slide, while, as earthquake intensity reaching or exceeding vi, the first - period landslide which lies to the south of huangjiagou in the front slip mass and the fourth - period landslide which lies to the north of caojialiangzi in the back slip mass will slide

    由金江滑坡的組成及結構特徵分析可知,邊坡為一多期次(四次滑動)兼具超覆特徵的巨型滑坡,其變形破壞機制屬順層邊坡中比較典型的滑移?彎曲型。穩定性計算表明,滑坡整體穩定性較好,僅在遭遇度及其以上地震作用的情況下,堆積體前部靠黃家溝以南的第一期滑坡及靠後部北側曹家梁子的第四期滑坡堆積體才會失穩;因素敏感性分析表明,滑坡穩定性對地震(尤以強震)最為敏感。
  5. It shows that hard layers barely affect the ground motion and can thus be neglected in general. the soft layers, on the other hand, can influence the ground motion greatly, i. e., seismic response will decreases when the period less than 0. 1s and it increases when period greater than 0. 3s, but it will not change significantly for the long period over 3s. therefore the whole effect of the soft layers on earthquake ground motion in fact depends on the characteristic frequencies input

    研究結果表明,硬夾層的影響很小,一般情況下,可以不予以考慮;軟夾層有較顯著的影響,其影響主要表現為:對周期小於0 . 1s的高頻段反應減小,對周期大於0 . 3s的較長周期段反應增大,而對周期長達3s及以上周期段反應幾乎無影響,因此,軟夾層對場地地震反應影響的總體作用是增大還是減小反應,取決于計算基底輸入地震動的頻譜特性。
  6. By calculating large quantity of examples, this text studies earthquake resistant behavior of tapered portal frame with pined bases and analyzes its natural frequency, natural period of vibration and vibration mode. by comparing interior forces of pillar top, beam end and span midpoint in two conditions that seismic action effect participates combination of forces and not when portal frame is n ' t changed, ensure conditions that combination of seismic action effect has controlling f unction during tapered portal frame design, and tapered portal frame demands anti - earthquake design

    本文通過大量算例分析,研究柱腳鉸接楔形變截面門式剛架的抗震性能,並對其自振頻率、振型進行了分析;通過比較地震作用效應參與荷載組合與不參與荷載組合兩種情況下,樑柱截面尺寸不變時,柱上端、梁端、跨中截面處的內力大小,確定在什麼情況下地震作用效應組合起控製作用,變截面門式剛架需要進行抗震設計。
  7. To monitor earthquake activities in the vicinity of hong kong, the observatory operates a network of eight short - period seismograph stations

    天文臺在香港境內設有8臺短周期地震計,用以監測香港鄰近地區的地震。
  8. The results showed that : ( 1 ) the models used by author and the analysis are useful and can be practiced. ( 2 ) after using isolation technology, the structure ' s period, earthquake response, base shear force and acceleration are all decreased markedly and the horizontal displacement focuses on isolation layer. ( 3 ) under frequent earthquake action, the shear force ratio between layers is close to 0. 35 ; in according with the provision in aseismic design code that the horizontal seismic reduction coefficient can choose 0. 53 and the upper building can be designed by decreasing one degree

    計算模型分別採用三維空間模型及規范中建議的彈簧、質量模型,隔震層採用疊層橡膠隔震支座,運用大型結構有限元計算程序sap2000以及自主開發的nba結構程序計算隔震結構在多維地震動輸入下的動力非線性時程反應,同時研究了隔震結構在溫度變化的作用下,結構各桿件的內力變化,通過對變電建築物在傳統抗震作用下及隔震作用下的分析比較,得出一些有益的結論。
  9. 4. the seismic dynamic reliabilities of the nanjing changjiang tunnel were analyzed, and its dynamic reliable and disable probabilities under the 7 degree earthquake were obtained, by using the maximum stochastic responses and the first overstress mechanism. in the other hand, the probability of serious seismic intensity and its probability distribution function were calculated by analyzing the seismic degree, and the seismic dynamic reliable and disable probabilities of the tunnel in its design reference period were calculated by using the maximum stochastic responses and the first overstress mechanism

    4採用最大隨機地震響應和首超破壞理論分析了隧道抗震動力可靠度,得到了隧道在七度地震作用下的地震動力可靠概率和失效概率;並通過對南京長江隧址的地震危險性分析,得到了各烈度地震的發生概率及其概率分佈函數,在此基礎上,分別採用最大響應和首超破壞理論計算了隧道在設計基準期內的安全概率和失效概率。
  10. Meanwhile, the rotational capability of the plastic hinge on the end of the passed - joint hypo - beam determine the capability of dissipation earthquake energy and occurrence of the process of internal force redistributing in the last period under earthquake force of the structure system in this test

    3 .邊梁的抗扭性能和梁端「扭轉塑性鉸」的轉動性能對整個結構抗震性能的影響至關重要,因而在工程設計中應注意邊梁的抗扭設計
  11. ( 6 ) conclusion was obtained by the analyzing the mechanics environment and the stability of the lanslide on the right bank after the dam built : the value of the rock mass stress increased and the tensile stress region obviously reduced, the direction of the principal stress was unchangeable the dam and the landslide were stable under the dangerous condition ( the reservoir and at the same time the earthquake was viii ), but when the water lever suddenly fell and did not think of other force, safe factor evidently reduced, the dam and the landslide will be destroyed under the most dangerous condition ( the water lever suddenly fell and at the same time the earthquake was vi ) ; the stability of the landslide will be destroyed by the horizontal thrust under the most dangerous condition or ; the physical and mechanical parameter will be reduced due to long period filter, the landslide will be destroyed too

    ( 6 )建壩工程荷載條件下河谷巖體力學環境分析及右岸古滑坡體的穩定問題分析得出:建壩后河谷的巖體應力量值明顯增高,同時左岸的張應力區的范圍及量值明顯減小,主應力的方向依然與模型的底邊界垂直;大壩建成后逐漸蓄水階段以及同時考慮本區最強地震力的作用等各種不同的工況條件時,滑坡體及壩體總體上仍處于穩定狀態;水位驟降時,在未考慮其他外力作用的情況時,滑體的安全系數將顯著降低。若考慮水位驟降及本區最大地震力的共同作用,壩體將在滑坡體下滑推力的作用下產生破壞;建壩后水平推力對右岸古滑坡體穩定性的影響分析可以看出,在最危險的工況條件下,壩體及滑坡體也將處于臨界狀態;在長期滲透變形的作用下,由於滑帶的物理力學參數的降低而有可能導致壩體失穩破壞。
  12. By analyzing and calculating the structure and stress distribution status of foundation under time of completion, operating period and earthquake condition, the initial determination on the kinetic strength and liquefied possibility of underlying sand layer beneath the dam foundation are obtained

    分析一計算結構及地基在竣工期、運行期和地震作用下變形和應力分佈狀況,並初步判斷閘壩基礎卜伏砂層的動弧度及液化的可能性。
  13. Through researching practical engineering on anti - earthquake analysis between the concrete structure and storey - between truss, this paper compared dynamic period and seismic behavior of this two kinds of structures, calculated force and deflection, put forward into the storey - between truss is an economic, reasonable, practical structure, it can conveniently construct and save space

    比較了這兩種結構的自振周期、振型,並對其內力(主要梁)的內力、變形進行驗算,說明在地震地區,選用層間桁架結構比混凝土框架梁具有更好的抗震性,同時具有經濟合理、方案可行、方便施工、節約空間的特點。
  14. The obtained results indicate that compared with the clay layer, the liquefied sand layer takes a decreasing effects on the short period component of the surface ground motion and the effects increase with increasing of the thickness 、 depth and width of the liquefied sand layer ; the liquefied sand layer takes a increasing effects on the long period component of the surface ground motion but the effect is not obviously ; to the input earthquake wave, the demarcation point of strengthens and weaken is about 0. 6s

    主要結論為:和同樣的粘土層相比,液化層的存在對地表上地震動的短周期分量主要起減弱作用,且減震效果隨著液化層埋深、厚度的增加而變強;對長周期分量主要起加強作用,但是效果不太明顯;對所輸入的地震波來說加強減弱的分界點所對應周期為0 . 6s左右。
  15. Time history analysis is carries on after the seismic waves being numbered according to period, input values of seismic wave to vibration equation of system, adopt the method of progressive integral to gain the whole course of the structure ' s state at the whole earthquake

    時程分析是將地震波按時段進行數值化后,輸入結構體系的振動微分方程,採用逐步積分法得出結構在整個地震時域中振動狀態的全過程。
  16. These phenomena could be caused by the effect of long - period wave generated from a large earthquake on far - field

    這些可能是大震的長周期波在遠場的效應所致。
  17. This paper introduces the development and present situation of vibration absorb technology in the world ; generally analysis the rubber - bearing ( rb ) and lrb " s operative mechanism, function and the calculation of parameter ; advance the concept of standardization to lrb ; on the basis of generally analyzing the connected factor such as the site category, the diameter of lead bar, the height of bearing, the designing carrying capacity, the span of bridge, the inherent period and the displacement of rb, determine the parameter, the absorbing vibration target, the method and the process of standardization to lrb ; then according to the two - step rule of resisting and defending earthquake, and combining with the response spectrum theory in the seismic vibration of bridge, make a lot of calculation and analysis of vibration absorb design to the real bridge collected and combined by finite element program ; at last, gives the result of standardization through diagram and explains to its usage

    本論文介紹了國內外減震技術的發展和現狀;綜合分析了普通板式橡膠支座和鉛銷橡膠支座的工作機理、性能及參數的計算;提出了鉛銷橡膠支座標準化的概念;在綜合分析場地土、鉛銷直徑、支座高度、設計承載力、橋梁跨徑、固有周期以及支座變位等影響因素的基礎上,確定了鉛銷橡膠支座標準化的參數、減震目標、方法和過程;並根據抗震設防兩階段原則,結合橋梁地震振動理論的反應譜法,運用有限元程序對收集和組合的實橋進行了大量減震設計的計算和分析;最後以圖表的形式給出了鉛銷橡膠支座標準化的結果,並說明了其使用方法。
  18. ( 3 ) furthermore, the stiffness effect induced by the infill walls makes the natural period of the frames decrease, which makes the earthquake forces put on the structures increase

    3 .另外,填充墻剛度效應的存在使得結構自振周期減小,從而使作用於整個建築上的水平地震作用增大。
  19. It is well known that end - plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. so it can reduce the damage, and is one of the best choices for resisting earthquake

    端板連接是一種具有一定柔性的連接形式,當框架結構採用這種節點時,可以增加結構的阻尼,延長結構自振周期,減小震幅,從而降低震害,是抗震的理想選擇之一。
  20. Finally, the cqc ( t ) algorithm which used to calculate the non - stationary under earthquake random excitation was derived, the exemplary analysis show that the improvement of accuracy of cqc ( t ) algorithm is limited for the normal structures which have low period

    最後本文提出了計算地震動隨機激勵作用下非平穩響應的cqc ( t )方法,通過算例比較發現對於一般的自振周期較小的結構, cqc ( t )方法的精度提高並不明顯。
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