Construction of precast segmental box girder bridge

Construmat 2018

Bujnakova, P.^1

Department of Structures and Bridges, University of Zilina, Faculty of Civil Engineering, Univerzitna 8215/1, Zilina

010 26, Slovakia^1

关键词: Balanced cantilever;    Bridge superstructure;    Concrete box girders;    Construction stages;    Erection process;    Experimental research;    Laboratory testing;    Temperature monitoring;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012007/pdf
DOI  :  10.1088/1757-899X/385/1/012007

来源: IOP

【 摘 要 】

New road segmental bridge have been built near the city of ilina, aligned on European highway corridor. The use of segmental concrete box girder was chosen as the flexible system and appropriate method in a municipal zone. The same parallel precast post-tensioned box girder structures were used with main spans of 60.5 m for total length of 1042m. The balanced cantilever method, with the self-launching gantry was used for erection. The shorter end spans, adjacent to the abutment, had to be built by employing falsework. Generally, the early segmental bridges have not been realized without problems following to the structure collapse. In order to assure the safety under construction stage of bridges and subsequently in service, the data was collected during casting and erection of the bridges since August 2016 to November 2017. The experimental research was divided into the laboratory testing and continuous in-situ strain and temperature monitoring of the bridge superstructure. The paper illustrates fabrication and erection process of the bridge and some results of superstructure testing.