地震工程学报Issue(3)：482-488,7.DOI:10.3969/j.issn.1000-0844.2014.03.0482
拟静力法公路路基结构抗震稳定性研究
Seismic Stability Analysis of Highway Subgrade Based on the Pseudo-static Method
苏晓成 1周天来 1刘志峰2
作者信息
- 1. 济南大学 资源与环境学院，山东 济南 250022
- 2. 山东省水利工程管理局，山东 济南 250013
- 折叠
摘要
Abstract
China is an earthquake-prone country,especially in its central and western regions. Earthquake is an unexpected event,and while its occurrence is not frequent,it can be catastrophic, and its effect on high grade highways is no exception.Previous research has rarely addressed the dynamic characteristics of subgrade filing and the stability of subgrade structures under earth-quake loads.The effect on the seismic dynamic load,as documented by the current“Code for the Design of Highway Engineering,”typically uses the region of earthquake intensity as its only ref-erence.This code does not consider seismic vibration frequency,the duration of an earthquake,or other characteristics.Therefore it cannot accurately reflect the characteristics of a subgrade struc-ture during an earthquake.In this paper,we carry out research on the dynamic stability of the roadbed structure using the pseudo-static method.We have improved upon the quasi-static method with respect to its formula for the dynamic stability of the roadbed structure.The retaining wall acceleration,as affected by the seismic load,is considered in the calculation of the earth pressure on the retaining wall,as is the influence of the seismic acceleration distribution coefficient.With respect to the roadbed,we also improved the seismic inertia force by introducing the acceleration distribution coefficient.From these pseudo-static method modifications,the stability calculation formula for subgrade slopes was thereby improved.关键词
抗震/路基/重力式挡土墙/拟静力法Key words
earthquake/subgrade/gravity retaining wal/pseudo static method分类
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苏晓成,周天来,刘志峰..拟静力法公路路基结构抗震稳定性研究[J].地震工程学报,2014,(3):482-488,7.
