Finite Element Analysis and Static Load Test of Precast U-shaped Beam

Jiahai  Liu; Dingyong Yu; Gang  Chen; Linhai Lu; Wei  Zhang

doi:10.6180/jase.2017.20.3.07

Finite Element Analysis and Static Load Test of Precast U-shaped Beam

Jiahai Liu This email address is being protected from spambots. You need JavaScript enabled to view it.^1,2, Dingyong Yu¹ , Gang Chen³ , Linhai Lu² and Wei Zhang⁴

¹Ocean University of China, Qingdao 266100, P.R. China
²Jinan Rail Transit Group Co., Ltd., Jinan 250101, P.R. China
³Shan Dong Province Project Management & Consulting Co., Ltd., Jinan 250001, P.R. China
⁴Beijing Urban Construction Design & Development Group Co., Ltd., Beijing 100037, P.R. China

Received: December 13, 2016
Accepted: May 10, 2017
Publication Date: September 1, 2017

Download Citation: ||https://doi.org/10.6180/jase.2017.20.3.07

ABSTRACT

Thin-walled U-shaped beam is widely used in the construction of urban rail viaduct, but finite element analytic theory and experimental study has lagged behind. The finite element calculation indicate that deflection caused by static load and live load is 9.17 mm. The ratio of deflection to span is 1/3271. The state of mid-span section is longitudinal compressive pre-stress. The transverse drawing stress is more than ultimate tensile strength of C55 concrete, reinforcement ratio or section size of transverse reinforcement should be appropriately increased. The static load test shows that the deflection of mid-span section caused by static live load is 7.22 mm. The ratio of deflection to span is 1/4141. Minimum compressive stress of mid-span section is 2.82 MPa. Deflection and stress under various loading case are less than the calculated value of finite element analysis. Obvious crack of U-shaped beam is not founded. Load test shows that U-shaped beam has greater safety reserves compared to design value.

Keywords: Urban Rail Viaduct, U-shaped Beam, Finite Element Analysis, Static Load Test

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