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今天在Elsevier中看到了吴轶大家的文章,摘要放在这里了,全文因版权问题不能上传,要有同仁需要留下联系邮箱。
Study on dynamic performance of a three-dimensional high frame supported
U-shaped aqueduct
Yi Wua, Hai Hong Mob,∗, Chun Yangb
a Department of Civil Engineering of Guangzhou University, Guangzhou 510405, PR China
b Department of Civil Engineering, South China University of Technology, Guangzhou 510640, PR China
Abstract
In this paper, the dynamic characteristics of a three-dimensional high frame supported U-shaped aqueduct are studied, in which the Arbitrary
Lagrangian Eulerian (ALE) method is applied to simulate the interaction effects, the large amplitude sloshing effects of water and effects on
the aqueduct structure, coupling effects between the 3D high frame-supported aqueduct and water in it. Results of researches show that external
actions induced large water sloshing effects will greatly change the distribution and the value of hydrodynamic pressures and stresses in the
aqueduct. Especially for the prestressing aqueduct structures, strong water sloshing in the aqueduct will not only greatly affect the effectiveness
of the arrangement of prestressing steel bars, but also lead to crack or fatigue crack in the aqueduct. Therefore hydrodynamic pressure should be
included as an important external load in the aseismatic design of a large-scale aqueduct structure, which has been neglected in normal design and
seismic analysis of aqueduct structures because of limited dynamic researches. |
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