• 土木工程 •

### 加筋路堤下涵洞土压力分布规律及计算方法

1. 1. 山东大学齐鲁交通学院，山东 济南 250002
2. 山东大学岩土与结构工程研究中心, 山东 济南 250061
3. 济南金衢公路勘察设计研究有限公司，山东 济南 250021
• 收稿日期:2021-03-24 出版日期:2021-08-20 发布日期:2021-08-18
• 通讯作者: 张宏博 E-mail:songxiuguang@sdu.edu.cn;zhanghongbo@sdu.edu.cn
• 作者简介:宋修广(1966—)，男，山东威海人，教授，博士，主要研究方向为路基路面病害机理与维修加固. E-mail: songxiuguang@sdu.edu.cn

### Distribution law and calculation method of earth pressure in culvert under reinforced embankment

Xiuguang SONG1(),Yimin ZHAO1,2,Hongbo ZHANG1,*(),Zhenyu YANG1,Qiang YANG3

1. 1. School of Qilu Transportation, Shandong University, Jinan 250002, Shandong, China
2. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
3. Jinan Jinqu Road Survey Design Research Co., Ltd., Jinan 250021, Shandong, China
• Received:2021-03-24 Online:2021-08-20 Published:2021-08-18
• Contact: Hongbo ZHANG E-mail:songxiuguang@sdu.edu.cn;zhanghongbo@sdu.edu.cn

Abstract:

Based on the scale model test, the difference settlement between the embankment and the culvert was simulated by changing the foundation compression modulus on both sides of the culvert to reveal the mechanism of reinforcement and subsidence reduction on the culvert roof, determine the distribution law of earth pressure on the culvert roof under the condition of embankment overloading, and deduce and establish the calculation formula of earth pressure.The results showed that the soil pressure at the top of the reinforced embankment was obviously higher than that of the ordinary embankment under the same foundation modulus. The embankment-culvert relative displacement decreased with the increase of the number of grid layers.Under the same reinforcement condition, the smaller the foundation compression modulus was, the higher the embankment-culvert relative displacement and the soil pressure on the culvert top would be.Combined with the soil arching effect and the mechanism of reinforcement and subsidence reduction, the calculation formula of earth pressure under the roof of reinforced embankment was established, and the reliability was verified with the model test results.

• TU443