Dynamic Response Analysis of Large Aqueduct Structure

Abstract

Dynamic response analysis is carried out for an aqueduct structure of the South-to-North Water Transfer Project. The interaction of water and aqueduct wall is simplified using Housner method. Six different water depths (empty aqueduct, 1/4 water depth, 1/2 water depth, 3/4 water depth, designed water depth and full water depth) are considered and calculation is conducted using time-history analysis method. The variation rule of dynamic stress and dynamic displacement are gained under different water depths. Results show that water has great influence on aqueduct body and its dynamic response. Dynamic displacement and dynamic stress of the aqueduct structure increase with the aqueduct water level increases. When water depth is bigger, dynamic displacement response and dynamic stress response are later than corresponding earthquake excitation. The relative stiffness of the longitudinal beam and the transverse beam should be fully considered in order to reduce stress concentration of aqueduct body.

The Adaptability Problem Analysis on Structural Response Calculation with Wideband Signals Excitation

“…The dynamic equation of a real structure after finite element discretization about its space coordinate is [3,4]…”

Numerical Study on Temperature Distribution of Steel Truss Aqueducts under Solar Radiation

“…To satisfy the demand for large span capability and various attractive geometrical surfaces, steel structures are widely used in numerous applications [1-3], of which one significant application is steel bridge [4]. Aqueducts [5] are special kinds of bridges for water transportation, which were usually made of reinforced concrete [6][7][8] or large volume concrete [9][10][11] in the past. Nowadays, new forms of steel truss aqueducts have been constructed like Magdeburg Water Bridge (2003) but are rarely seen in China.…”

Analysis of Aqueducts Subjected to Hydrostatic and Dynamic Loads Using 3D - Solid Modeling

“…But later, some of the linear methods were developed to study the water-structure interaction such as Westergard's additional mass method and Housner's model method. Some of the other methods include the non-linear methods to study the water-structure interaction such as boundary element method and ALE (Arbitrary Lagrangian-Eulerian) finite element method which considered the effect of water sloshing (Bai et al, 2011;Gao et al, 2014). Haroun and Tayel (1985) studied and compared the effect of vertical translation of elastic, cylindrical liquid storage tank under vertical and horizontal seismic excitation for three different support conditions of the wall, namely, fixed, simply supported and partly fixed conditions.…”

“…The results obtained from the model subjected earthquake vibration showed that the structure was highly vulnerable, especially at the upper level of the outside wall. Bai et al, (2011) had discussed the dynamic response of large aqueduct for different water depths in the aqueduct using Housner's method. From the result, it was observed that, the dynamic displacements and dynamic stresses of aqueduct structure increased with the depth of water in aqueduct.…”