Performance-Based Seismic Evaluation of Soil-Pile-Bridge Pier Interaction Using Incremental Nonlinear Dynamic Analysis

Abstract

The purpose of this paper is to present the methodology for performance-based seismic evaluation of soil-pile-bridge pier interaction using the incremental nonlinear dynamic analysis (INDA). The INDA analysis was post processed separately for the pier and for the pile, so that the constructed PGA=f(DR) curves are in the capacitive domain. For these curves the authors identified the IO, CP i GI performance levels, while the regression analyses were conducted based on the specific DR and PGA parameters. Fragility curves were constructed based on the solutions of regression analysis and the probability theory of log-normal distribution. Based on the results of fragility analysis, reliability curves were also constructed.

U radu je prikazana procedura evaluacije seizmičkih performansi interakcije tlo-šip-stub mosta inkrementalnom nelinearnom dinamičkom analizom (INDA). Postprocesiranje INDA analiza je sprovedeno posebno za stub, a posebno za šip, tako da su konstruisane krive PGA=f(DR) u kapacitativnom domenu. Za ovako konstruisane krive određeni su IO, CP i GI performansni nivoi, a na osnovu određenih DR i PGA parametara sprovedene su regresione analize. Krive povredljivosti su konstruisane na osnovu rešenja regresione analize i teorije verovatnoće log-normalne raspodele, a za PGA meru intenziteta. Takođe, konstruisane su i krive pouzdanosti na osnovu rešenja analize povredljivosti.