STRESS AND DEFORMATION ANALYSIS OF A U-SHAPED THIN AQUEDUCT BASED ON SHELL ELEMENT
DOI:
https://doi.org/10.14311/CEJ.2023.02.0011%20Klíčová slova:
Thin aqueduct, Shell 181, Finite element method, Deflection, Tensile strength, StressAbstrakt
In order to study the stress and deformation characteristics of Jigongzui U-shaped thin shell aqueduct structure, shell element in ANSYS is proposed to establish the three-dimensional finite element model of the aqueduct for numerical calculation, and the relevant mechanical parameters are obtained by detecting the depth of concrete carbonization. The simulated results show that: (1) The concrete carbonization depth of Jigongzui aqueduct reached 20mm, accounting for about 20% of the total thickness of the channel wall; (2) With the increase of aqueduct water level, the deformation and stress of the aqueduct body gradually increase. The maximum deflection in the middle of the span is 6.98mm, which is less than the limit value of the specification, but the tension in some areas at the bottom of the middle of the span is obvious, exceeding the allowable tensile strength. It is suggested to strengthen the aqueduct body by pasting high-performance fiber materials to improve the stress distribution of the aqueduct body; (3) Shell element has fast calculation speed and high efficiency when simulating similar U-shaped thin shell aqueduct, which can be popularized in simulating similar thin shell structures.
Stažení
Reference
Ministry of water resources of the people's Republic of China Code for design of reasonable service life and durability of water conservancy and hydropower projects: SL 654-2014 [S] Beijing: China water resources and Hydropower Press, 2014.
Liu Tao, He Jianxin, Liu Liang, et al Water filling test and bearing capacity safety evaluation of Kizilsu river aqueduct [J] Hydropower energy science, 2021,39 (04): 100-104.
Liu Xiaojuan, Zhang Hongjun, Feng Sa. Three dimensional finite element analysis of stress and deformation of Xinnan main canal aqueduct structure [J] Engineering construction, 2021,53 (04): 32-37.
Huang Junbao, Deng Chengfa Performance safety evaluation of old aqueduct structure based on three-dimensional laser scanning [J] China rural water resources and hydropower, 2020 (03): 142-145.
Xia Fuzhou, Qian Liyun, Zhang Jun Study on structural safety and evaluation index system of large aqueduct [J] China Rural Water Conservancy and hydropower, 2011 (08): 121-123.
Ji richen, Su Xiaofeng, Yan Juan Study on the influence of water quality on the transverse seismic performance of large beam aqueduct [J] Journal of earthquake engineering, 2013,35 (3): 569-574.
Shang Feng, Zhu Yanzhi, Zheng Yongzhi Safety evaluation and disease treatment of in-service reinforced concrete aqueduct [J] Water conservancy and hydropower technology, 2018,49 (12): 208-214.
Huang Tao, Zhang Guoxin, Li Jiang, et al Causes of cracks in an aqueduct in cold area and influence of reinforcement corrosion on durability [J] Water conservancy and hydropower technology, 2019,50 (12): 120-129.
Shen Xiaoming, Huang Yong Study on Design of prestressed concrete U-beam aqueduct [J] China water transport, 2019,19 (11): 253-254.
Kate E. Porter, Stephanie E. Ordonez-Sanchez, Robynne E. Murray, et al. Flume testing of passively adaptive composite tidal turbine blades under combined wave and current loading[J]. Journal of Fluids and Structures, 2020, 93(1):11-15.
Holmlund P, Qvarlander S, Malm J, et al. Can pulsatile CSF flow across the cerebral aqueduct cause ventriculomegaly? A prospective study of patients with communicating hydrocephalus[J]. Fluids and barriers of the CNS, 2019, 16(1):40-41.
Deng Chengfa, Yu Junjun, Lai Sheng, et al Safety evaluation and analysis of datangkou open web double arch aqueduct [J] Hydropower and energy science, 2019,37 (7): 70-73.
Zhang Jianwei, Wen Jiaqi, Huang Jinlin, et al Determination of simulation parameters of aqueduct and its nonlinear contact wind-induced vibration analysis [J] Journal of North China University of water resources and hydropower (NATURAL SCIENCE EDITION), 2019,40 (2): 77-83.
Liu Shuai, Zhai juyun Stress and deformation monitoring and simulation analysis of large prestressed beam aqueduct [J] People's Yellow River, 2020,42 (1): 126-130.
Ministry of water resources of the people's Republic of China Code for design of hydraulic concrete structures: SL191-2008 [S] Beijing: China water resources and Hydropower Press, 2008.
Stahování
Publikováno
Jak citovat
Číslo
Sekce
Licence
Copyright (c) 2023 Stavební obzor - Civil Engineering Journal
Tato práce je licencována pod Mezinárodní licencí Creative Commons Attribution-NonCommercial 4.0.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
¨
