【摘 要】
：
The serviceability of water supply networks (WSNs) under seismic loads has significant importance for estimating the probable losses and the impact of diminished functionality on affected communities. The innovation presented in this paper is suggesting a
【机 构】
：
Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education,Beijing Uni
论文部分内容阅读
The serviceability of water supply networks (WSNs) under seismic loads has significant importance for estimating the probable losses and the impact of diminished functionality on affected communities. The innovation presented in this paper is suggesting a new strategy to evaluate the seismic serviceability of WSNs, utilizing their operational physical mechanism. On one hand, this method can obtain the seismic serviceability of each node as well as entire WSNs. On the other hand, this method can dynamically reflect the propagation of randomness from ground motions to WSNs. First, a finite element model is established to capture the seismic response of buried pipe networks, and a leakage model is suggested to obtain the leakage area of WSNs. Second, the transient flow analysis of WSNs with or without leakage is derived to obtain dynamic water flow and pressure. Third, the seismic serviceability of WSNs is analyzed based on the probability density evolution method (PDEM). Finally, the seismic serviceability of a real WSN in Mianzhu city is assessed to illustrate the method. The case study shows that randomness from the ground motions can obviously affect the leakage state and the probability density of the nodal head during earthquakes.
其他文献
The challenge in the practical application of rocking foundations is the estimation of its performance, particularly the rotation angle, during a strong earthquake. In this study, the dynamic rocking behavior for a shallow foundation considering structura
In recent years, special attention has been given to the effects of underground spaces and structures on the seismic response of adjacent ground. Nevertheless, to the best of the authors\' knowledge, no method has yet been considered to reduce these eff
Drill and blast is a commonly used method for rock slope excavation in hydropower engineering. During blasting excavation of rock slopes, far-field vibration monitoring on the first upper berm for statutory compliance is usually performed to control the b
In China, an increasing number of high concrete face rockfill dams (CFRDs) are located in high intensity earthquake zones, some of which are close to the seismic fault line. Recordings suggest that near-fault ground motions are characterized by large one-
The motivation for this article is to propose new damage classifiers based on a supervised learning problem for locating and quantifying damage. A new feature extraction approach using time series analysis is introduced to extract damage-sensitive feature
Protective compartments are typically used to protect some specific structures from internal explosions, such as industrial buildings that contain devices that may explode in certain circumstances. This research investigates how the response of reinforced
Much effort has been made in investigating the seismic response and failure mechanism of rectangular subway stations, however, the influence of earth retaining systems has generally been ignored in previous studies. This paper presents a numerical study o
A relevance vector machine (RVM) based demand prediction model is explored for efficient seismic fragility analysis (SFA) of a bridge structure. The proposed RVM model integrates both record-to-record variations of ground motions and uncertainties of para
Railway bridges are susceptible to over-height truck collisions and to address this issue, it is necessary to attenuate the effect of these impacts to ensure the safety of transportation operations. This study experimentally investigates the effectiveness
Large tanks are extensively used for storing water, petrochemicals and fuels. Since they are often cited in earthquake-prone areas, the safe and continuous operation of these important structures must be ensured even when severe earthquakes occur, since t