力系数

• Then the judging method is proposed , and the proposed method can consider the stress history and viscosity shear strength of soft soil . in this paper , a fem program dpfbm1 . 0 ( double plastic foundation beam method ( version 1 . 0 ) ) is established . with this program , the influence of some parameters on foundation excavation is fully studied , the parameters include : compression modulus , cohesive strength , angle of internal ficiction , effective angle of internal friction , the embedded length of the wall and building load
  针对当前国内外弹性地基梁法存在的缺陷，基于对软土流变性的研究，采取了剪应力判断弹塑性状态，以改进和完善基坑工程弹性地基梁法，推导了弹性状态下地基反力系数的近似解，提出了采用剪应力组合判断土弹簧弹塑性状态的方法，编制了相应的弹塑性共同变形法分析程序dpfbm1 . 0 ( doubleplasticfoundationbeammethod ( version1 . 0 ) ) ，并采用该程序分析了压缩模量、粘聚力、内摩擦角等参数变化对基坑工程的影响。
• Abstract : based on thestatic wind force factors of a tower and on the root - mean - square of the buffetingdisplacement responses of the tower top , which are measured by wind tunnel tests inlaminar and turbulent field respectively , the static and buffeting internal forces of thetower bottom control sections under its design wind speed are obtained by linearsuperposition method and fem
  文摘:基于均匀流和紊流风场中的桥塔模型风洞试验所测得的桥塔空气力静力系数及塔顶抖振响应的位移均方根，采用线性叠加法及有限元法反演，给出设计风速下塔底控制截面的顺风向静风及抖振内力。
• The model includes three aspects ( 1 ) objective : aspect . regional leading industry choice ( 2 ) criterion aspect : comparative advantage criterion , industrial relationship criterion , technology advancement criterion , market potential criterion ( 3 ) norm aspect : location quotient , comparative labor productivity , comparative fund profit and tax rate , area ’ s added value proportion , industrial influence coefficient , industrial sensitivity coefficient , technology advancement speed , technology progresses contribution rate , growth rate , demand income elasticity
  模型共分三层:目标层? ?区域主导产业选择;准则层? ?比较优势基准、产业关联基准、技术进步基准、市场潜力基准;指标层? ?区位商、比较劳动生产率、比较资金利税率、区内增加值比重、产业影响力系数、产业感应度系数、技术进步速度、技术进步贡献率、增长率、需求收入弹性。
• Innovations are not only the requirements of the manufacturing own development , but also the fundamental choices continuously improving the country ' s overall economic strength which have been confirmed by the international theorists and the practice of major countries in the world
  通过建立技术进步贡献率与消耗系数的关系,推出创新的消耗系数,进而得出创新感应度系数和创新影响力系数。最后,通过对我国制造业创新现状的分析,测定了我国制造业内部各行业的技术进步的感应度和影响力系数。
• The authors suggest : the internal force ' s value is rational if the coefficient of lateral resistant force is one - forth to one - sixth of tests value , or the coefficient of lateral soil pressure is bigger than the coefficient of earth pressure at rest , or the lateral resistant force is computed together with the lateral earth pressure
  提出如将抗力系数取?实验值1 / 4到1 / 6 ，或土压力系数稍高于静止土压力系数，将侧向抗力和侧向土压力综合?虑，内力计算结果将是合理的。
• Using the corresponding specialized technique , an input - occupancy - output table on water conservancy 51departments of yangtze river valley in 1999 is studied and compiled , and some coefficients , such as direct water use coefficient , total water use coefficient , water use coefficient for values added and mulapler ect . , are calculated
  摘要利用投入占用产出技术研究和编制了1999年长江流域片51部门水利投入占用产出表，计算出长江流域片各种用水系数，包括直接用水系数、完全用水系数、增加值用水系数和用水乘数，计算了部门的影响力系数。
• The number of modes should be selected according to the participant coefficient of mode when calculating the internal force by the response spectrum method ; ( 4 ) the roof plate of large base which connect the towers together should be thick enough but not exceeding the proper scope that the towers and the large base can vibrate together , ( 5 ) in structures with large base and muti - towers , with increasing of the capacity of the large base , the inter - story shear force will increase while the inter - story displacement will decrease as to fulfill the ductility request to avoid the large base becoming weak story , but meanwhile , the upper story will turn into weak story , thus the coefficient r s should be within 2 . 0 ~ 3 . 0
  采用振型分解反应谱法计算结构内力时应根据振型参与系数选择振型避免漏选；大底盘多塔楼结构连接各塔楼的裙房屋面刚度应做得大些，以保证底部裙房与上部塔楼共同振动，但也不能过刚；大底盘多塔楼结构底盘承载力的加强将使底盘层剪力增大、层间变形减小，但易于满足延性要求，在一定程度上可避免底盘成为薄弱层。但底部加强会导致薄弱层的上移，因此采取提高底盘承载力的措施的效果是有限度的，承载力系数s宜取为2 . 0 3 . 0之间。
• Based on the mechanism of shear - slipping dam collapse , the state function of high arch dam shear - slipping failure mode is established , and the function involves four non - fully - independent random variables , namely , compressive stress , shearing stress , coefficient of friction and coefficient of cohesion , and is of nonlinear characteristics
  根据剪滑溃坝机理建立了高拱坝剪滑失效模式的状态函数，该状态函数包含压应力、切应力、摩擦系数以及粘结力系数等4个非完全独立的随机变量，且具有非线性特征。