Research Of Rapid Earthquake-Resistant Evaluation Methods Based On Probabilistic Reliability

The Chinese current identification of structure adopts the combination of rating and calculation method, generally ignoring the reliability of the structure, without a full set of evaluation system for the entire structure reliability. Referring to American FEMA154 file, this paper analyses the aseismic reliability of existing masonry structure, attempts to establish a fast identification method for masonry structure seismic capability.This paper analyses the native and foreign method of reliability evaluation, and then introducing the method to calculate the reliability, and puts forward a simplified calculation method of the system reliability. This paper applies the practical simplified analysis method of structure reliability based on the analytic hierarchy process and second order moment method, combining the reliability of each component in the floor according to the weight function (revised load/resistance ratio) as the reliability of floor, defining the minimum floor reliability as the reliability of the system.Masonry structure occurred mainly shear failure of structure failure modes under the action of earthquake, in this paper, the shear capacity of the wall minus its share of the earthquake action is defined as the functions of aseismic reliability analysis, calculation formula of shear resistance ability to apply the current design code of the wall. Through to the Kunming city within the scope of the 50 masonry structure modeling analysis, the reliability of members of the calculation, finally combined into system reliability, so as to get a statistical average reliability of masonry structure in an area. At the same time referencing FEMA154 rapid assessment method of the aseismic capacity, analyzing the influence factor of structure reliability such as the vertical irregular structure, irregular plane, building height, the building construction period adopted by the specification version, site categories as the fixed points of structural reliability, will be integrated into the scoring system, which to establish a rapid identification method of seismic capacity of masonry structure.