Ksce Journal of Civil Engineering
Papers 4185
1 page of 419 pages (4,185 results)
The rapid development of high-speed railway tunnels has resulted in the increased application of ballastless track slabs. However, floor heave induces ballastless track slab deformation as a result of surrounding rock pressure, imposing serious challenges to the safety of railway systems. In this study, the characteristic of floor heave was analyzed based on field monitoring data. A new tunnel lining structure was then proposed to reduce the effect of floor heave on the slab track. The stress an...
#1Hümeyra Tosun (Aksaray University)
#2Alper Alver (Aksaray University)H-Index: 8
Last. Emine Baştürk (Aksaray University)H-Index: 6
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Air pollution in developing and developed countries, especially in urban and industrial areas, is one of the biggest problems of the world. Air pollution can lead to various adverse outcomes such as condensation of the greenhouse effect, acid rain and public health problems. The most significant source of environmental pollution in urban areas is road transportation. This study aimed to determine the effectiveness of solar photocatalytic asphalt materials in reducing the air pollution problem (N...
#1Khanh Pham (VNUHCM: Vietnam National University, Ho Chi Minh City)H-Index: 6
Last. Hangseok Choi (KU: Korea University)H-Index: 19
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Accurately estimating the mechanical behavior of frozen soil plays a central role in frozen ground engineering. Owing to the nonlinear and uncertain nature, modeling the stress-strain behaviors of frozen soil has been challenging the physics-based models. This study proposed a data-driven approach on the Bayesian neural network (BNN) framework that can precisely estimate the stress-strain behaviors of frozen sand with minimum input requirements. First, a series of triaxial tests were conducted t...
#1Duan Wenjun (Southwest Jiaotong University)
#2Zhang Longguan (Southwest Jiaotong University)
Last. Zhongrong Zhou (Southwest Jiaotong University)H-Index: 27
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This paper explores the effect of the profile of tunnel boring machine (TBM) cutters on the rock cutting performance via the use of a particle flow discrete element model. Two of the most commonly used cutters, namely a flat-tip cutter and a circular-tip cutter, are considered in the study. Reduced-scale rotary rock cutting experiments are performed to verify the key conclusions obtained by the numerical analysis. The results from both the simulations and experiments indicate that, at the same p...
Sluices are main flood control infrastructures in coastal areas, where soft rock and soft soil are widely distributed. In soft soil areas, the vertical displacement of sluice is common, which is the main factor affecting the sluice safety. So, it is very important for sluice safety control according to the prototypical observations on deformation. Considering some drawbacks of leveling, such as it can only provide a limited number of points and requires time-consuming field work, this paper eval...
#1Xiaofei Li (Dalian Maritime University)
#2Yuyu Xiao (Dalian Maritime University)
Last. Jisong Zhang (Dalian Jiaotong University)
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With the development of bridges, independent condition assessment of large-scale bridges has garnered significant attention over the past few decades. Data-driven structural health monitoring (SHM) techniques offer valuable information on the existing health of the structures, maintain safety, and uninterrupted use under varied operational conditions by undertaking timely risk and hazard mitigation. Traditional approaches, however, are not enough to monitor a large amount of SHM data and conduct...
#1Zuosen Luo (CTGU: China Three Gorges University)H-Index: 3
#2Zuoxiang. Zhu (CTGU: China Three Gorges University)
Last. Meiling Zhou (CTGU: China Three Gorges University)H-Index: 1
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In view of the problem whereby the rock masses in water-level fluctuation zones of reservoir banks are susceptible to deterioration due to soaking-drying cycles, the sandstone of a typical landslide in the Three Gorges Reservoir area is selected as the test object to determine the ion concentration of an immersion solution and rock sample via periodic water-rock microscopic images, quantitative back analysis of the porosity changes caused by the dissolution of rock minerals under soaking-drying ...
#1Chengyu Yang (Tongji University)
#2Xuesong Cai (PolyU: Hong Kong Polytechnic University)
In the absence of intensive tests on the cable-stayed bridges under non-uniform excitation, this study provides a practical and accurate approach to investigate the seismic response of cable-stayed bridges considering spatially varying earthquake inputs. The cable-stayed bridge model with a scale ratio of 1:120 was designed and tested on a newly-developed dual shake table system. Firstly, the modal test was conducted to evaluate the accuracy of the designed specimen. Secondly, both the same inpu...
Flow simulation and forecasting accuracy using rainfall-runoff models is one of the main challenges in hydrological modelling, especially when focused on the flow simulation at a short time scale. These uncertainties are typically dependent on the model design, the technique used for estimating model parameters, the process of considering rainfall variability and errors in the discharge data used for the calibration. Indeed, the uncertainty associated with the discharge derived from the rating c...
#1Wei Shao (Shanghai Maritime University)
#2Danda Shi (Shanghai Maritime University)
In this study, an integrated numerical approach is developed to simulate the damage and degradation behaviors of concrete piles in sulfate saline soils. The governing equations for modeling the sulfate diffusion-reaction mechanism are presented. The diffusion properties of sulfate ions are modified by taking into account the effects of pore filling and expansion cracking on the diffusivity of sulfate ions. The model for simulating the volumetric expansion and damage evolution is presented. The d...
Top fields of study
Finite element method
Composite material
Geotechnical engineering
Materials science
Structural engineering