Translated Title

Trial-design Study on Integral Abutment Bridge by Using UHPC-RC Stagewise Piles

Translated Abstract

A　UHPC-RC　stagewise　pile　with　ultra　high　performance　concrete(UHPC)was　proposed　to　increase　the　flexibility　of　the　foundation　and　adapt　to　the　longitudinal　deformation　of　the　integral　bridge.The　trial-design　of　integral　abutment　bridge　employing　such　a　new　kind　pile　was　performed.In　the　top　3　m　of　the　pile,UHPC　with　30　cm×30　cm　section　was　used　to　instead　of　the　original　70　cm　×　50(70)cm　RC.The　finite　element　model　of　the　whole　bridge　was　established　by　using　MIDAS　software.The　study　results　show　that　negative　bending　moment　at　the　end　of　the　beam　in　the　trial-design　bridge　is　obviously　reduced　compared　to　the　original　bridge　under　dead　load.T　he　negative　bending　moments　decrease　about　14.2%　and　22.8%　respectively　under　offset　load　and　central　load.When　the　temperature　drops,the　axial　force　and　bending　moment　of　beam　are　significantly　reduced.The　maximum　shear　force　and　bending　moment　of　the　pile　occur　at　the　top　of　the　pile,and　they　decrease　about　52.2%,59.8%,respectively.When　the　temperature　rises　up,the　maximum　shear　force　and　bending　moment　of　the　abutment　appear　at　the　top　of　the　abutment,and　decrease　by　32.6%　and　45.8%,respectively.T　rial-design　study　indicates　that　UHPC-RC　stagewise　pile　is　a　new　type　pile　which　is　suitable　to　be　used　in　integral　bridge　in　China.

Translated Keyword

integral abutment bridge
soil-pile interaction
trial-design
UHPC-RC stagewise pile

Classification

U443.1

Type

Project Name

Project No.

Access Number

WF:perioarticalxbjzgcxyxb201801001

Language

Chinese

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