文献类型：期刊文献

英文题名：Reinforcement Analysis of an Old Multi-Beam Box Girder Based on a New Embedded Steel Plate (ESP) Strengthening Method

作者：He, Yuliang[1];Wang, Kai[1];Cao, Zongyong[2];Zheng, Peijuan[1];Xiang, Yiqiang[3]

机构：[1]Shaoxing Univ, Coll Civil Engn, 508 West Huangcheng Rd, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Hua Hui Grp, 508 West Huangcheng Rd, Shaoxing 312000, Peoples R China;[3]Zhejiang Univ, Coll Civil Engn & Architecture, Zijingang Campus,Anzhong Bldg B718, Hangzhou 310058, Peoples R China

年份：2022

卷号：15

期号：12

外文期刊名：MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000817347200001)、、EI(收录号：20222612298037)、Scopus(收录号：2-s2.0-85132945305)、WOS

基金：This work was financially supported by Zhejiang provincial natural science foundation (LY18E080017/E19Q090008), 2020 Science and Technology Project of Zhejiang Province Construction Department (2020K127), Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, and the 2011 Science and Technology Project of the Hangzhou Construction Committee.

语种：英文

外文关键词：multi-beam box girder bridge; ESP strengthening; field test; load lateral transferring performance; structural stiffness

外文摘要：Multi-beam box girder bridges have been applied widely throughout the world for many years. However, the cracking of longitudinal joints between the box girders always leads to reflective cracking of the bridge decks during the service period and thus finally affects the safety and durability of the actual bridges. An embedded steel plate (ESP) strengthening method was presented by introducing carbon-A/-B glue to reinforce the longitudinal joints of old multi-beam box girder bridges for this problem. In order to evaluate the feasibility of the proposed method for actual bridges, an old multi-beam box girder bridge was reinforced, and structural parameters including strain, frequency, and deflection were obtained by adopting field tests before and after strengthening. In addition, the corresponding finite element (FE) model of the background bridge was also set up using ANASYS 18.0 to analyze the strengthening process. Analysis results of the actual bridge and FE model indicate that structural stiffness and load lateral transferring performance between the box girders were enhanced after ESP strengthening. Therefore, this proposed strengthening method can be used to improve the mechanical performance of multi-beam box girder bridges and provide reference for such bridge reinforcement.