| 1. | Based on the characteristic of rock strength , an expression of happening probability of influencing structural earthquake was derived
摘要依据岩石强度的分形特性，导出了影响构造地震发生概率的表达式。 |
| 2. | Among those , the stress and an angle between extend stress axes and fault strikes is the key factor , which bring on a structural earthquake
其中，应力及拉应力轴与断层走向之间的夹角是导致地震发生的关键因素。 |
| 3. | The results show that the main factors influenced structural earthquake are earth damage degree , fault length stress and an angle between extend stress axes and fault strike
研究结果表明，地壳损伤程度、断层长度、应力及拉应力轴与断层走向之间的夹角是影响构造地震的主要因素。 |
| 4. | In the research of earthquake forecast , continuous observation on the stress changes and the changes of stress direction should be sufficiently regarded in a danger region happening structural earthquakes
在地震预测研究中，既要重视对地震危险区块内的应力大小变化的实时观测，亦要重视对地震危险区块内应力方向变化的实时观测。 |
| 5. | In this paper , the theoretical evaluation method of structural earthquake resisting behavior , pushover analysis method , was expounded . and some valuable conclusion for application of pushover analysis method had been gained
本文以pushover法为基础，研究把这种较为简便的方法应用于已建建筑结构抗震性能评估中的一些关键问题，通过本文的研究，解决了pushover法应用中的一些问题。 |
| 6. | In performance - based seismic design , the quantitative parameter of structural earthquake response can be gained according to the deformation - based or energy - based computation method . the computation of deformation or energy must be based on the nonlinear time - history analysis of structure
在基于性能的抗震设计中，结构地震反应的定量参数或指标可通过基于变形或基于能量的具体计算方法来实现。变形或能量的计算必须以结构的弹塑性性能分析为基础。 |
| 7. | Are uncertain and should be regarded as random variables , therefore the reinforced concrete frame is stochastic structure inherently , and then its motive equations converted to combined random differential equations for the uncertain parameters and external random excitation . these equations were solved by order - orthogonal expansion method with pseudo - excitation method , and then the statistic stochastic responses of random structure were obtained . at last , based on the stochastic cumulative damage model with double parameters developed by park , formulas were formulated for calculating structural earthquake damage probability using the structural reliability theory ( mainly jc algorithm ) in extensive random space
首先对受地震激励的剪切型钢筋混凝土结构进行建模，用随机等效线性化方法将二阶非线性微分方程组化成一阶线性微分方程组(或称之为状态方程) ；再考虑材料等参数的随机性，则状态方程成为复合随机微分方程组，将扩阶系统方法和虚拟激励方法推广并应用于这个复合随机微分方程组，求出结构的随机响应量的统计参数；最后采用随机累积损伤破坏准则，在广义随机空间内，用jc算法求解失效概率，进而求出结构的抗震可靠度。 |
