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Image analysis of soil failure on defective underground pipe due to cyclic water supply and drainage using X-ray CT

Toshifumi MUKUNOKI, Naoko KUMANO, Jun OTANI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2, Pages 85-100 doi: 10.1007/s11709-012-0159-5

Abstract: The ground subsidence on the underground pipe often is caused with the reduction of the effective stressThe final formation of the cavity growth in the ground was observed as the ground subsidence.Moreover, the dimension of the defected part should be related to the magnification of the ground subsidencepipe and particle size would be the quantitative factor to evaluate the magnification of the ground subsidence

Keywords： relative density grain property model test road subsidence underground pipe image processing X-ray CT

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Analysis of spinal lumbar interbody fusion cage subsidence using Taguchi method, finite element analysis

Christopher John NASSAU, N. Scott LITOFSKY, Yuyi LIN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 247-255 doi: 10.1007/s11465-012-0335-2

Abstract:

Subsidence, when implant penetration induces failure of the vertebral body, occurs commonly afterThree-dimensional finite element analysis (FEA) was performed to address the resistance to subsidenceThe calculated subsidence is derived from the ANN objective function which is defined as the resulting

Keywords： fusion (ALIF) artificial neural network (ANN) finite element interbody cage lumbar interbody fusion subsidence

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An ANFIS-based Approach for Predicting MiningInduced Surface Subsidence

Ding Dexin,Zhang Zhijun,Bi Zhongwei

Strategic Study of CAE 2007, Volume 9, Issue 1, Pages 33-39

Abstract:

Current approaches for predicting mining induced surface subsidence havea drawback in common that they predict the subsidence only on the basis of a physical or mechanicalapproach irrespective of the practical examples in engineering practice in mining induced surface subsidence.However,this paper accumulated a lot of practical examples of mining induced surface subsidence,integrated theseapproach was further tested by using practical examples of mining induced surface subsidence.The results

Keywords： underground mining mining induced surface subsidence adaptive neuro唱fuzzy inferencesystem

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Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Strategic Study of CAE 2009, Volume 11, Issue 2, Pages 33-35

Abstract:

Stress distribution in the third subsidence belt is presented , withThe results indicate that the third subsidence belt extends over 1 500 km from north to south , and theThe monitoring data implies that the tectonic stress direction in third subsidence belt is the combined

Keywords： hydraulic fracturing monitoring with micro- seismics third subsidence belt direction of maximumprinciple

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Characteristics and application of road absorbing solar energy

Zhihua ZHOU, Shan HU, Xiaoyan ZHANG, Jian ZUO

Frontiers in Energy 2013, Volume 7, Issue 4, Pages 525-534 doi: 10.1007/s11708-013-0278-2

Abstract: If the heat of road surface can be stored in summer, the road surface temperature will be decreased toA road-solar energy system was built in this study, and the heat transfer mechanism and effect of thesystem were analyzed according to the monitored solar radiant heat, the solar energy absorbed by roadThe temperature of the solar road surface was 3°C–6°C lower than that of the ordinary road surface.road.

Keywords： solar energy road-solar energy system road surface temperature solar absorptivity of road surface solar

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Development and road performance of clear asphalt with high transparency and adhesion

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2, Pages 238-255 doi: 10.1007/s11709-022-0898-x

Abstract: Clear asphalt (CA) currently used in light-colored asphalt mixtures (LCAM) exhibits poor transparency and adhesion. Therefore, a highly transparent CA (HCA) modified using a silane coupling agent (KH550) was prepared. Furthermore, LCAM was prepared by mixing CA and limestone aggregates. The properties of the HCA and ordinary CA (OCA) were characterized using conventional asphalt tests, optical tests, pull-off tests, ultraviolet aging tests, dynamic shear rheometry, Fourier-transform infrared spectroscopy, differential scanning calorimetry, and scanning electron microscopy. Whereas Marshall, moisture resistance, wheel tracking, trabecular bending, and British pendulum tests were employed for the LCAM. The transmittance and spectral reflectance of the HCA were 123.30 and 3.74 times greater than those of the OCA, respectively. The complex modulus and viscosity-aging index of the HCA were 48% and 53% less than those of the OCA, respectively. After modification with KH550, the Marshall stability ratio, tensile strength ratio, and flexural strain of the HCA-prepared LCAM increased by 12.92%, 25.06%, and 23.90%, respectively. However, the rutting resistance of the HCA-prepared LCAM was 14.3% less than that of the OCA-prepared LCAM. The comprehensive performances of the HCA and HCA-prepared LCAM were 49.2% and 10.3% greater than those of the OCA and OCA-prepared LCAM, respectively, indicating a high application value in the future.

Keywords： light-colored asphalt pavement orthogonal test road performance spectral reflectance silane-coupling

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Special issue: Management of road and railway traffic and transportation engineering

Yongfu SUN, Ziyou GAO

Frontiers of Engineering Management 2017, Volume 4, Issue 4, Pages 385-387 doi: 10.15302/J-FEM-2017110

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Rational Understanding about Renaissance Path of China's Road and Bridge Engineering

Mao-run Feng,Zheng-song Zhao

Frontiers of Engineering Management 2014, Volume 1, Issue 1, Pages 42-51 doi: 10.15302/J-FEM-2014013

Abstract: At the turn of this century, China began the largest road and bridge development in the world, whichSurveying the development of world transportation, and comparing the road and bridge construction effortsaction to build up a transportation network; demand and innovation are the driving forces to upgrade roadefficiency, expose all construction practices that violate scientific law, overall management defects in road

Keywords： road network expressway bridge project technological innovation construction management social management

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Quantification of emission variability for off-road equipment in China based on real-world measurements

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1455-x

Abstract:

• Emissions from 53 in-use diesel-fueled off-road equipment were measured

Keywords： Off-road equipment Portable emission measurement system (PEMS) Real-world emissions Diesel engine

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“Heavenly Road”: The Qinghai–Tibet Railway

Yongfu SUN

Frontiers of Engineering Management 2020, Volume 7, Issue 2, Pages 304-307 doi: 10.1007/s42524-019-0079-3

Abstract: Xiaobo WANG. [J]. Front. Eng, 2019, 6(1): 131-137.Peter REDFERN, Hua ZHONG. [J]. Front. Eng, 2017, 4(2): 193-200.Qixiang FAN. [J]. Front. Eng, 2017, 4(2): 231-237.Ming-zhou Liu,Cong-hu Liu,Mao-gen Ge,Yuan Zhang,Qing-hua Zhu. [J]. Front. Eng, 2016, 3(2): 144-146.Yu Zhao,Sheng-quan Wang,Ke-chao Zhu. [J]. Front. Eng, 2015, 2(1): 35-38.Ru-gui Chen,Jia-meng Chen. [J]. Front. Eng, 2014, 1(1): 52-61.An Wang. [J]. Front. Eng, 2014, 1(1): 13-17.

Keywords： permafrost protection sustainable development health guarantee system

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Nondestructive Testing Method to Assess and Detect Road Performance

Guo Chengchao,Xu Pengfei and Zhong Yanhui

Strategic Study of CAE 2017, Volume 19, Issue 6, Pages 72-79 doi: 10.15302/J-SSCAE-2017.06.011

Abstract: As such, it is essential to implement rapid and effective management measures to ensure road safety,In this paper, five nondestructive road testing methods and their associated testing equipment are introducedwithout traffic closures, likely provide a new approach for establishing a high-efficiency intelligent roadnetwork monitoring system, and will provide a practical and feasible method for sustainable road development

Keywords： road detection road defects nondestructive testing

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Impacts of opening baffle of city road tunnels on natural ventilation performance

Weixiao YANG, Jincheng XING, Jianxing LI, Jihong LING, Haixian HAO, Zhiqiang YAN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 55-61 doi: 10.1007/s11709-013-0194-x

Abstract: Based on the opening baffle mode for natural ventilation of city road tunnels, this paper studies thebaffle reaches its optimal performance when the length of the baffle is equal to the width of the city road

Keywords： city road tunnel numerical simulation baffle top opening natural ventilation

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Green Road Construction Technologies in Guangzhou

Guan-feng An,Wen-yuan Huang,Jing-feng Zhang

Frontiers of Engineering Management 2016, Volume 3, Issue 1, Pages 80-86 doi: 10.15302/J-FEM-2016002

Abstract: Total road pavement in Guangzhou reaches 77 ×10 m .Its huge maintenance and potential rehabilitation calls for a green road system.This paper presents a discussion, first about green road construction technologies together with theirwarm mix asphalt; and then, about the key obstacles for promotion and activities, primarily for green roaddevelopment expectation from an industrial viewpoint, this paper creates a development trend of green road

Keywords： road green construction recycling of waste asphalt rubber asphalt

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Connecting the Belt and Road through sea-rail collaboration

Chenhao ZHOU, Haobin LI, Wencheng WANG, Loo Hay LEE, Ek Peng CHEW

Frontiers of Engineering Management 2017, Volume 4, Issue 3, Pages 315-324 doi: 10.15302/J-FEM-2017031

Abstract: As part of China’s “the Belt and Road” strategy, China Railway Express provides alternative shipping

Keywords： China Railway Express the Belt and Road shipping industry combined transportation

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Simulation model based on Monte Carlo method for traffic assignment in local area road network

Yuchuan DU, Yuanjing GENG, Lijun SUN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2, Pages 195-203 doi: 10.1007/s11709-009-0032-3

Abstract: For a local area road network, the available traffic data of traveling are the flow volumes in the keyConsidering the circumstance characteristic and the data availability of a local area road network, aThe formulation for local area road network assignment problems is proposed on the assumption of randomassignment model based on the Monte Carlo method has been used in traffic analysis for an actual urban road

Keywords： traffic assignment local area road network turning ratio Monte Carlo method