Seismic Damage Prediction Of Water Supply Pipeline

Water supply pipeline system is a key issue in urban lifeline engineering, and the seismic assessment for the system damage is of significant importance. In this study, method of seismic damage assessment on underground water supply pipeline is introduced. With emphasis on the uncertainties of earthquake level, ground condition, soil-pipe interaction and capacity to resist pipe deformation in longitudinal direction, the check point method is applied to the reliability study of water pipeline, and a case study is presented to show the implementation of the proposed model.

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A NEW SEISMIC DAMAGE PREDICTION METHODOLOGY OF WATER SUPPLY PIPELINES FOR WIDE REGIONS; APPLICATION TO THE 2004 NIIGATA-KEN CHUETSU EARTHQUAKE, JAPAN

Doboku Gakkai Ronbunshuu A ◽

10.2208/jsceja.66.561 ◽

2010 ◽

Vol 66 (3) ◽

pp. 561-567

Author(s):

Hisakazu SAKAI ◽

Kouichi HASEGAWA ◽

Nelson PULIDO

Keyword(s):

Water Supply ◽

Seismic Damage ◽

Damage Prediction

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Seismic Damage Analysis on Water Supply System in Wenchuan Earthquake

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.1947 ◽

2011 ◽

Vol 194-196 ◽

pp. 1947-1950

Author(s):

Dan Yang ◽

En Dong Guo ◽

Qiong Wang

Keyword(s):

Water Supply ◽

Wenchuan Earthquake ◽

Survey Data ◽

Seismic Performance ◽

Seismic Damage ◽

Supply System ◽

Water Supply System ◽

Damage Analysis ◽

Functional Failure ◽

Water Supply Pipeline

In order to understand the seismic performance and functional failure feature of water supply system, the seismic damage phenomena, damage feature and degree of several kinds of water supply pipeline under different earthquake intensities are investigated based on the post earthquake survey data of water supply system in over 20 cities and counties.

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Ensuring of irrigation machines application depth in uniformity’s distribution

Melioration and Water Management ◽

10.32962/0235-2524-2019-2-25-30 ◽

2020 ◽

pp. 25-30

Author(s):

Gennadiy Ol'garenko ◽

Boris Gordon

Keyword(s):

Water Supply ◽

Irrigation Depth ◽

Application Depth ◽

Water Supply Pipeline

A method of rain uniformity’s distribution was presented for different spraying devices, which were set on irrigation machines working in different mode of moving. A method for effective irrigation radius and width calculation was justified by using irrigation depth uniformity values from the area under water supply pipeline of the irrigation machine.

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Measurement of indoor environmental parameters and analysis of the condensation phenomenon in urban utility tunnels

Indoor and Built Environment ◽

10.1177/1420326x211056485 ◽

2022 ◽

pp. 1420326X2110564

Author(s):

Chuanmin Tai ◽

Guansan Tian ◽

Wenjun Lei

Keyword(s):

Water Supply ◽

Surface Temperature ◽

Air Temperature ◽

Natural Ventilation ◽

Environmental Parameters ◽

Dew Point ◽

Control Mode ◽

Safe Management ◽

Environmental Test ◽

Water Supply Pipeline

Condensation is a major issue in the safe operation of utility tunnels. To address the condensation problem, the indoor air temperature, relative humidity (RH) and surface temperature in an urban utility tunnel in Jining were continuously measured, and the condensation conditions were surveyed and analysed. The results indicated that under natural ventilation conditions, the air temperature in the comprehensive cabin varied from 23.4°C to 24.5°C, the RH fluctuated between 86.4% and 95.3%, and the corresponding air dew point temperature (DPT) remained in the range of 22.2°C–22.9°C. The surface temperature of the water supply pipeline ranged from 17.8°C to 18.5°C, which was far lower than the DPT in the tunnel, resulting in serious condensation. A water supply pipeline with an anti-condensation design was developed based on environmental test data. A 25-mm-thick rubber plastic sponge insulation layer was used to thermally insulate the water supply pipeline, preventing further dew condensation. Furthermore, mechanical ventilation had little effect on reducing the RH in the tunnel and may actually cause dew condensation; therefore, a ventilation control mode was proposed in this study. These results are expected to provide basic data for further research and reference for the safe management of utility tunnels.

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A new approach for estimating seismic damage of buried water supply pipelines

Earthquake Engineering & Structural Dynamics ◽

10.1002/eqe.2869 ◽

2017 ◽

Vol 46 (9) ◽

pp. 1531-1548

Author(s):

H. Sakai ◽

N. Pulido ◽

K. Hasegawa ◽

Y. Kuwata

Keyword(s):

Water Supply ◽

Seismic Damage ◽

New Approach

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Analysis of Propagation and Distribution Characteristics of Leakage Acoustic Waves in Water Supply Pipelines

Sensors ◽

10.3390/s21165450 ◽

2021 ◽

Vol 21 (16) ◽

pp. 5450

Author(s):

Yunfei Li ◽

Yang Zhou ◽

Ming Fu ◽

Fan Zhou ◽

Zhaozhao Chi ◽

...

Keyword(s):

Acoustic Wave ◽

Water Supply ◽

Acoustic Waves ◽

Simulation Analysis ◽

Acoustic Signals ◽

Detection Methods ◽

Acoustic Analogy ◽

Acoustic Wave Propagation ◽

Source Characteristics ◽

Water Supply Pipeline

Leakage detection methods based on the analysis of leakage acoustic signals provide an effective technical approach for detecting small leaks in water supply pipelines. From a technical perspective, the study of the propagation characteristics of acoustic waves generated by the leakage in the water supply pipeline is necessary for detecting the leak location on the basis of acoustic signals. In this study, a 3D transient leakage acoustic wave propagation equation was derived by combining the principles of fluid dynamics and Lighthill acoustic analogy theory. The propagation of the leakage-induced noise in water supply pipeline was modelled theoretically. We simulated the propagation of a leakage acoustic wave under different conditions for different target scenarios encountered in actual pipeline inspections. Specifically, we analysed the effect of different factors, such as the pipe size and acoustic source characteristics, on acoustic propagation. Finally, the simulated experiments were practically performed using a self-designed simulated water supply pipeline and self-developed spherical water supply pipeline detector to validate the simulation analysis. The results of this study provide a theoretical guidance and basis for the analysis of characteristics of leakage acoustic wave signals and the recognition of leakage conditions in water supply pipelines.

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