The discrepancy settlement control criterion relates to several aspects such as the placidity and comfort of driving at high speed , smooth drainage , and the crack which may occur during or after widening process 差异沉降的控制标准涉及众多因素,包括拓宽过程中及拓宽以后高速行车的平稳性、舒适性、排水的畅通以及新老路基间裂缝的开展等多种因素,其中高速行车的平稳性为主要因素。
7 . based on the equilibrium principle between supply and demand , the optimal control criterion theory of water shortage risk is established from two aspects , one aim at the whole guarantee system of regional water resources , the other discuss the risk control criterion o 门)基于供给与需求均衡原理,从两个方面建立水资源短缺风险的最优控制标准理论,一是针对整个区域水资源保障系统,二是在区域发生水资源短缺风险后的调控准则。
Through a lot of test pile material , this essay concludes the vertical bearing capacity calculation formula of man - made pile with bulb shaped base by strength theory and relative deformation as control criterion . the method of defining pedestal pile foundation deformation modulus is especially discussed in this article , and it takes the mindlin solution as the starting point using mathematics method to get the poisson ' s ratio ( u ) which is the factor influencing foundation soil deformation modulus , and a deformation modulus calculating equation is finally determined 本文通过大量试桩资料和有限元计算分析,给出了以强度理论和相对变形为控制标准的人工挖孔扩底桩竖向承载力计算公式。其中特别论述了扩底桩地基变形模量的确定方法,并从mindlin解出发利用数学方法得出了影响地基土变形模量大小的因素?泊松比,初步确定了比较完善的变形模量计算公式。
( 4 ) for a class of uncertain time - delay systems with multiple - state delays , new delay - dependent robust stabilizability and robust h control criteria are derived based on lyapunov - krasovskii functional method and given in terms of linear matrix inequalities ( lmis ) , which are proved by the numerical examples to be simpler and less con N )针对一类多状态滞后的不确定时滞系统,提出了一种新的时滞依赖型鲁棒镇定及hoo控制设计方法,并且提供了一种把xiccati方程方法和lmi方法相结合来解决此类问题的途径。
To control the settlement of roadbed , the degree of compaction regulated by current criterion is not enough , the mechanics parameter of filler compacted - - deformation parameter should be considered and dual control criterion should be put in practice . to get upper deformation parameter of xigeda stratum filler , the percentage of mudstone should be controlled . the thickness of filling layer regulated by current criterion can be increased if the compaction car has proper function 通过此次研究,获得了对路堤变形问题的新的认识,即为了控制路堤的沉降变形,不仅应满足现行规范中规定的压实度标准,还应该引入填料压实后的力学参数? ?变形模量值标准,实行双重控制标准,而对于昔格达地层这种混合填料,为了获得较大的模量值,应该控制填料中泥岩的含量;现行公路路基施工规范中对路堤填筑时分层填筑厚度的规定值,在压实机具功能满足的条件下,可以适当提高。