ABSTRACT

This paper presents a numerical approach to construct the seismic probabilistic capacity models for the transversal lining section of circular tunnels. The influence of the lining dimension, reinforcement ratio, and properties of the concrete, reinforcement steel, and soil are considered. Two capacity measures, the bending moment M and the diametric distortion Δd/d, are considered, and each of them is represented by a separate model. To consider the possible correlation of the two capacity measures, a bivariate moment-distortion capacity model is also proposed. As an application example, the proposed capacity models are used to estimate the fragility curves of a tunnel.

摘要

本文提出了一种数值方法来构建圆形隧道横向衬砌部分的抗震概率模型。考虑了衬砌尺寸、配筋率以及混凝土、钢筋和土的性能的影响。考虑了两个容量度量，即弯矩M和直径变形 Δ d / d ，它们中的每一个都由一个单独的模型表示。为了考虑两种容量测量的可能相关性，还提出了双变量力矩失真容量模型。作为应用示例，所提出的通行能力模型用于估计隧道的脆弱性曲线。