Hydraulic modeling of flow impact on bridge structures: a case study on Citarum bridge

TALENTA - Conference on Engineering, Science and Technology 2017

工业技术;自然科学

Siregar, R.I.^1,2

Civil Engineering Department, Faculty of Engineering, Universitas Sumatera Utara, Jl. Dr. Mansur Kampus USU, Padang Bulan, Medan

20155, Indonesia^1

Sustainable Energy and Biomaterial Centre of Excellence, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan

20155, Indonesia^2

关键词: Bridge structures;    Catchment response;    Flood modeling;    Flow parameters;    Intense rainfalls;    Methodological approach;    Model components;    Structural damages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/309/1/012015/pdf
DOI  :  10.1088/1757-899X/309/1/012015

来源: IOP

【 摘 要 】

Flood waves because of the rapid catchment response to high intense rainfall, breaches of flood defenses may induce huge impact forces on structures, causing structural damage or even failures. Overflowing stream that passes over the bridge, it means to discharge flood water level is smaller than the capacity of the river flow. In this study, the researches present the methodological approach of flood modeling on bridge structures. The amount of force that obtained because of the hydrostatic pressure received by the bridge at the time of the flood caused the bridge structure disrupted. This paper presents simulation of flow impact on bridge structures with some event flood conditions. Estimating the hydrostatic pressure developed new model components, to quantify the flow impact on structures. Flow parameters applied the model for analyzing, such as discharge, velocity, and water level or head that effect of bridge structures. The simulation will illustrate the capability of bridge structures with some event flood river and observe the behavior of the flow that occurred during the flood. Hydraulic flood modeling use HEC-RAS for simulation. This modeling will describe the impact on bridge structures. Based on the above modelling resulted, in 2008 has flood effect more than other years on the Citarum Bridge, because its flow overflow on the bridge.