Current Issue : July - September
Volume : 2021
Issue Number : 3
Articles : 5 Articles
For the problems of unreasonable force and large deformation of traditional antislide structure system, three new arch antislide pilewall
structure systems are designed for a loess landslide treatment project in Northern Shanxi province.-e working performances of
four kinds of antislide structures are numerically simulated and analyzed to realize the optimization of the antislide structure system.
-e results show that the arch antislide pile-wall structure system is a rigid connection between the piles and cap beam, and the
antislide pile, cap beam, and sliding bed soil form a spatial nearly rigid structure. Cap beam can better transfer the bending moment
generated by the larger thrust in the landslide middle to the piles with less force on both sides of the landslide, so that the stress and
deformation of the whole antislide system tend to be uniform, which makes the antislide system “joint operation.” And this structural
form increases the overall stiffness and bending capacity and reduces the possibility that the middle pile is destroyed first and loses its
working capacity due to large thrust.................................
With the continuous progress of the construction industry, the requirements for concrete in the bridge engineering are
getting higher and higher. +is research mainly discusses the detection of D-shaped concrete-filled steel tube structure in
bridge engineering. In this study, the D-shaped concrete-filled steel tube member was used as the research object, and the
load-displacement curve of the D-shaped concrete-filled steel tube compression-bending member was analyzed by the fiber
This article carries out a numerical simulation of a landslide-type long-span roof structure, Harbin Wanda Cultural Industry
Complex. )e maximum span of the landslide-type roof is 150m and the minimum span is 90 m, with a minimum height of 40m
and a maximum height of 120 m, and the roof area is divided into three different parts. )e large eddy simulation (LES) method is
used to simulate and record the wind pressure coefficient of the roof. )e distribution law and cause of the mean wind pressure
coefficient of the roof are firstly analyzed, and the comparison with the existing wind tunnel test data proves the validity of the
numerical simulation. Secondly, a qualitative analysis is made on the distribution of root mean square (RMS) fluctuating coefficients.
Subsequently, the non-Gaussian characteristics of the roof are briefly discussed, and the peak factor distribution is
calculated. Finally, based on the total wind pressure coefficient, a simple evaluation method for judging favorable and unfavorable
wind direction angles is proposed, and only the shape of the roof and wind angle need to be known....
The load-response correlation is a great concern for the management and
maintenance agency of bridges. Based on both the load test data and the longterm
structural health monitoring data, this study aims to characterize the
variation in the girder-end longitudinal displacement of a long-span suspension
bridge, i.e. , the Zhaoyun Bridge in Guangdong Province of China. The
load test provides a valuable chance to investigate the structural deformation
in high loading levels, while the structural health monitoring system records
the real-time, in-site, and long-term measurements in the normal operational
stage of bridges. During the load test, the movement direction of the main
girder is found to depend on the relative position of the center of gravity of
the girder and the loading vehicles. However, over the period of normal operation,
the quasi-static displacement at the ends of the main girder along the
bridge axis is dominated by the temperature variations, rather than the traffic
loading. The temperature-induced deformation is considerable so it should be
filtered out from the structural total responses to highlight the live load effects
or the anomalies of the bridge. As a case study, the temperature-displacement
baseline model of the Zhaoyun Bridge is established and then utilized
to identify the erroneous measurements in the structural health monitoring
system. This paper serves as a reference for the structural behavior interpretation
and performance evaluation of similar bridges....
Based on research on subway tunnels in a viscous soil medium, this paper establishes the vibration equation of a tunnel structure
by using the theory of moderately thick cylindrical shells and the method of wave propagation. )e soil around the tunnel is
represented in simplified form as an isotropic viscoelastic medium to obtain the equation of motion of the soil, and the vibration
control equation of the tunnel under the influence of viscous soil is obtained by coupling. By numerical calculations, the variation
trends in the natural vibration frequency of the tunnel and attenuation affected by soil viscosity under different modes are given.
Furthermore, the influences of the tunnel radius, wall thickness, and length on the vibration characteristics of a tunnel structure in
viscous soil are discussed. )is study will provide a reference for the design of subway vehicles and the antivibration design of
subway tunnel structures....
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