The idea of a logarithmic earthquake magnitude scale was first developed by Charles Richter in the 1930's for measuring the size of earthquakes occurring in southern California using relatively high-frequency data from nearby seismograph stations.

以對數方式來記錄地震等級的概念五十路熟妇高熟无码av种子，最早是由查理斯黄色网站线在线观看入口。里查德在十九世紀三十年代提出的1024手机看电影一区乳。他當時正在測量南加里弗利亞的地震等級呦呦国产，使用的是附近的地震檢測臺站的相關高頻數據日韩欧亚自拍视频在线播放免费观看。

Through detailed analyzing some influencing factiors of sand liquefaction, seven parameters were selected as assessment indexes. They are earthquake magnitude, peak ground surface acceleration, standard penetration value, specific penetration resistance, relative compaction, average particle diameter, and water table. The extension assessment model has been established that was applied to assessment of sand liquefaction potential. The model had been trained by the historical data and has been assessed in virtue of sand liquefaction from the historical data by simulating, and got a excellent result. After introduction of the support vector machine theory, this paper established the assessment model of sand liquefaction based on the support vector machine, and assessed in sand liquefaction from virtue data of some fields in home and overseas with the tool Libsvm, which was programmed based on the support vector machine theory. And got a good coherency between the assessement results and the actual liquefaction.

在詳細分析影響砂土液化因素的基礎上亚洲免费视频日韩在线观看，選取了震級M、地面最大加速度g_黄网站无码男人免费大全、標準貫入擊數N_(63.5)亚洲性爱一级视频在线观看、比貫入阻力P_s、相對密實度D_r三级艹逼精品、平均粒徑D_(50)99/久久精品视频、地下水位d_w等7個參數作為評價指標，建立了砂土液化勢的可拓評價模型国产后入式免费视频，并對歷史數據進行仿真評價三级片第一页，取得了較好的應用效果；在對支持向量機的理論進行介紹后91不卡在线精品国产，本文建立了基于支持向量機的砂土液化勢評價模型欧美色屌，并利用在基于支持向量機理論的Libsvm軟件，對若干國內外場地的現(xiàn)場實測數據進行了評價可以进去的黄片，評價結果與現(xiàn)場表現(xiàn)基本上一致亚洲zaixianguankan。

The main research work and its results are: 1Empirical results are analysed for the relations of fault displacement and earthquake magnitude, and difference between permanent ground deformation and maxium dynamic relative displacement on the two sides of fault; 2An analytic method is proposed for resopnse of a buried pipeline due to earthquake fault movement; 3A new shell model with an equivalent boundary and relted finite element analysis method are proposed for estimating response of a buried pipeline under large fault movement; 4By the proposed method, damage performance of water supply steel pipelines with large diameter is simulated to the real cases in Kocaeli Earthquake and Ji-Ji Earthquake, and simulating results show the real failure mode of pipes is revealed; 5Effects of overlying soil and soft/hard interlayers are analyzed on ground rupture mode and degree due to earthquake fault, and some earthquake rupture phenomena in soil layers are theoretically described for the first time; 6Pipeline response characters are discussed for the case of considering effects of soil layers on ground rupture mode; 7Research results and proposed method are applied in seismic analysis of pipline acrossing fault in the Gas Tansportation Project from West to East in China.

主要工作和成果包括：1）分析了不同斷層位錯形式下地表破裂位錯量與震級之間的經驗關系，并基于集集地震近斷層記錄分析了斷層兩側永久地面變形和地震動相對位移幅值之間的差別成人av小姐网站在线电影，為合理地考慮地震斷層位錯地面變形動態(tài)影響提供了依據国产乱了在线观看；2）發(fā)展了斷層位錯地面大變形下管線反應分析模型并給出物理概念明確、簡單實用的解析分析方法九九色这里只有精品首页；3）建立了斷層位錯下埋地管線反應分析的等效邊界殼模型有限元方法能直接在线看的网址你懂的，方法中引入了以非線性彈簧形式模擬離斷層較遠處管段影響的等效邊界，簡化了計算模型并突出了近斷層處管體反應歐美特級精品尤物黃片視頻；4）利用等效邊界殼模型方法美屄网站，對土耳其地震和集集地震中大口徑埋地管線震害進行了模擬，結果表明所提方法可以更清地解釋震害所表現(xiàn)的管體破壞特征黄色网站久久久；5）研究了覆蓋土層和軟硬夾層的存在對斷層位錯地面破裂形式和程度的影響国产原创麻豆高清有码在线，首次從理論上解釋了某些地震地表破裂現(xiàn)象；6）探討了考慮土層對斷層位錯地面變形影響的管體反應特征；7）本項目成果已在西氣東輸工程的管道跨斷層抗震問題分析中得到了應用www.黄片动力大一免费看。

earthquake magnitude：震級

震級(earthquake magnitude)是表示地震本身大小的量度指標,是以地震儀測定的...震級(earthquake magnitude)是表示地震本身大小的量度指標,是以地震儀測定的每次地震活動釋放的能量多少來確定的.

earthquake magnitude：地震震級

地震烈度 earthquake intensity | 地震震級 earthquake magnitude | 施工荷載 constructional loading

earthquake magnitude：地基基礎抗震地震震級

652 21. 地基基礎抗震 地震烈度 earthquake intensity | 653 21. 地基基礎抗震 地震震級 earthquake magnitude | 654 21. 地基基礎抗震 地震卓越周期 seismic predominant period