Field experiment of vibration characteristics of lightweight embankments converted from bridges using rigid polyurethane foam-filling under traffic load

被引：1

作者：

Koyama, Atsushi ^{[1
]}

Akira, Yoshikazu ^{[2
]}

Mitabe, Hitoshi ^{[3
]}

Fukubayashi, Yoshinori ^{[1
]}

Suetsugu, Daisuke ^{[1
,4
]}

机构：

[1] Univ Miyazaki, Fac Engn, 1-1,Gakuenkibanadai Nishi, Miyazaki, Miyazaki 8892192, Japan

[2] Kagoshima Univ, Fac Engn, 1-21-40,Korimoto, Kagoshima, Kagoshima 8900065, Japan

[3] INOAC Housing & Construct Mat Co Ltd, 4-9-27,Taiho Atsuta, Nagoya, Aichi 4560062, Japan

[4] 1-1,Gakuenkibanadai Nishi, Miyazaki, Miyazaki 8892192, Japan

来源：

CASE STUDIES IN CONSTRUCTION MATERIALS | 2023年 / 18卷

关键词：

Rigid polyurethane foam; Lightweight embankment; Vibration characteristics; Field truck driving tests; Monitoring; Bridge; DYNAMIC PROPERTIES; MICROSTRUCTURE; EARTHQUAKE; CONCRETE;

D O I：

10.1016/j.cscm.2022.e01756

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The method of filling the lower space of a bridge with rigid polyurethane foam (RPU foam) to reduce the traffic load along with seismic reinforcement has rarely been applied to extend the life of bridges in Japan. This study evaluates the reinforcement effect and change in the vibration characteristics of a bridge converted into a lightweight embankment by RPU foam filling. A truck was driven on the bridge before and after the RPU foam filling. The vibration and strain of the slab were found to have reduced at the span center. When a traffic load was applied, the pre-dominant frequency inside the RPU foam was similar to 5 Hz, and long-period vibrations relative to the slab were confirmed.

引用

页数：13