It is to use finite element method to calculate the stress within the slope in this paper , and get the normal stress and tangent stress of the slope sliding surface directly , and then calculate the stability coefficient of the slope 本文研究内容是应用有限元法计算斜坡内部的应力，并直接求解边坡滑动面上的法向力和切向力，进一步计算边坡的稳定系数。
For circle failure surface , this paper uses ga ' s theory to search the center of a circle and the radius of it separately , and based on simple bishop method to compute the safety factor ( f ) , and compiled program successfully 针对圆弧形滑动面法，采用嵌套式的遗传算法分别对滑动圆弧的圆心、半径进行遗传进化搜索，基于简化bishop原理进行稳定系数的计算，成功的编制了程序。
The analysis shows that the stability factor of linear elastic analysis is approximately equal to the stability factor of geometrical nonlinear analysis . it is also revealed that the stability factor decreases little with respect to various horizontal loads 研究显示几何非线性稳定分析结果与线弹性稳定分析结果较为接近，并且在不同量值水平风荷载作用下，该桥的稳定系数下降不多。
Current design codes of the steel structure ( gb50017 - 2003 ) gave the global stability coefficients of beams under loading of the concentrated load / the uniformly distributed load / the end moments , simultaneously offered its modification factors of the linearly distributed moment 现行国家钢结构设计规范( gb50017 - 2003 )给出了集中荷载，均布荷载，以及端弯矩作用下梁的整体稳定系数。
The author also proposed the formula to calculating the factor of safety according the method is deduced . the integral method could get precise solution and simplify process of computing . some cases are calculated to testify the exactitude of the method 通过实例计算表明分条宽度对稳定系数的计算结果是有影响的，分条宽度大，计算误差大；分条宽度小，结果精确，但计算工作量加大。
Taking account of the simplified torsion moment of inertia , integral stability coefficient increase relatively 5 % or 0 . 01 ~ 0 . 03 absolutely , only for narrow rolled h - section ( hn ) behind hn350 175 , whose calculation length goes beyond the limit of 8 meters Gb50017中扭转惯性矩的简化使规格大于hn350 175的hn型钢，在计算长度大于8米时，整体稳定系数偏高5 ，绝对偏大量在0 . 01 0 . 03范围。
The discrepancy of inelastic stability modified equation between the gb50017 code and the gbj17 - 88 code is wee . the former result is not more 103 . 5 % than the latter . concerning inelastic stability modified equation , the gb50017 code is appropriate Gb50017与gbj17 88的弹塑性修正简化式计算结果吻合得很好，前者计算的整体稳定系数比后者偏大不超过3 . 5 ， gb50017的弹塑性简化式适用于国产轧制h型钢。
After looking back the state - of - the - art of the geometry nonlinear characteristic ofsteel frame structures home and abroad , this paper introduces the definition ofstability coefficient . several stability coefficients in different countries ’ codes arecompared subsequently 本文在回顾钢框架结构几何非线性研究历史及现状的基础上，介绍考虑p -效应的稳定系数的定义，对几个国家规范中的稳定系数进行了比较。
So the author proposed some compliments in circle slices method as follows : first , after definite integral method instead of the present slices method was suggested by chen zuyu , a lot of experts studied at this aspect because this method can get rid of the slicing 本文针对这两个问题作了以下改进： 1 、在陈祖煜提出用积分的思路代替条分法以后，不断有人在这方面作研究。本文推导了圆弧滑动面的稳定系数的解析公式。
The results of the study demonstrate that under the condition of the same slendness ratio , the stability factor of axially compressed medium long concrete filled steel tube column has no relation with peak stress of the core concrete , instead , the factor will depend on peak strain of the concrete 研究结果表明，在长细比相同的情况下，钢管混凝土轴压中长柱的稳定系数与核心混凝土的峰值应力无关，而取决于核心混凝土的峰值应变。
