【正文】 2012 Elsevier Ltd. All rights reserved.（七）歐洲專利數(shù)據(jù)庫(kù)()列舉出部分檢索結(jié)果（含摘要）。 Fatigue。 Natural gas pipeline。s structural integrity, does not have a significant impact on pipeline lifetime period.Highlights? The impact of trafficinduced vibration on a buried gas pipeline is presented. ? The experiment on operating buried gas pipeline was conducted. ? Pipeline lifetime period was calculated with the mathematical model. ? The effect of induced vibration does not have significant impact on lifetime period.Keywordsmm and 250University of Ljubljana, Faculty of Mechanical Engineering, A?ker?eva 6, 1000 Ljubljana, Sloveniab,B. ?iroka, 2010 Elsevier Ltd. All rights reserved.5.Impact assessment of trafficinduced vibration on natural gas transmission pipelineT. Bajcara, Competitive analysis。 Clockspeed acceleration。 Natural gas transmission industry。 US, TSR,Return On Net Operating Assets。Return On Capital Employed。 RF, LNG, LDC, HSE, FERC, EU, EBIT, DOE, CAPM, Williams is a close follower. Clockspeed laggards for the natural gas transmission segments coincide with the corporate clockspeed laggards of the peer group: CMS Energy and NiSource (over the performance period studied)。natural gas transmission business segmentshows similar– over the performance period studied – are: Williams, El Paso and Kinder Morgan。Department of Geotechnology, Delft University of Technology, PO Box 5048, 2600GA Delft, The NetherlandsReceived 16 October 2009, Revised 17 March 2010, Accepted 23 March 2010, Available online 24 April 2010Applied EnergyVolume 87, Issue 8, August 2010, Pages 2455–2466AbstractThis study presents the clockspeed analysis of a peer group prising six major integrated US energy panies with substantial US interstate natural gas pipeline business activities: El Paso, Williams, NiSource, Kinder Morgan, MidAmerican and CMS Energy. For this peer group, the three clockspeed accelerators have been benchmarked at both corporate level and gas transmission business level, using timeseries analysis and crosssectional analysis over a 6year period (2002–2007). The results are visualized in socalled clockspeed radargraphs. Overall Genetic algorithmGadget timed out while loadingCorresponding author. Address: School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, 8 Xindu Road, Xindu District, Chengdu City, Sichuan Province, PR China.Copyright 169。 Analytical solution。 Natural gas pipeline。School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, PR Chinab,Zhibin Denga, fax: +39 06 44585451.Copyright 169。 Structural damage。 Explosion。 System SafetyVolume 148, April 2016, Pages 57–66Highlights?The safety of buildings against blast loads due to pipeline accidents is assessed.?A probabilistic risk assessment procedure is presented for naturalgas pipelines.?The annual risk of collapse of reinforced concrete building columns is evaluated.?Monte Carlo simulation was carried out considering both pipeline and column features.?A risktargeted safety distance is proposed for blast strength class 9.AbstractNaturalgas pipeline accidents mostly result in major damage even to buildings located far away. Therefore, proper safety distances should be observed in land use planning to ensure target safety levels for both existing and new buildings.In this paper, a quantitative risk assessment procedure is presented for the estimation of the annual probability of direct structural damage to reinforced concrete buildings associated with highpressure naturalgas pipeline explosions. The procedure is based on Monte Carlo simulation and takes into account physical features of blast generation and propagation, as well as damage to reinforced concrete columns. The naturalgas jet release process and the flammable cloud size are estimated through SLAB onedimensional integral model incorporating a release rate model. The explosion effects are evaluated by a MultiEnergy Method. Damage to reinforced concrete columns is predicted by means of pressure–impulse diagrams. The conditional probability of damage was estimated at multiple pressure–impulse levels, allowing blast fragility surfaces to be derived at different performance limit states. Finally, blast risk was evaluated and allowed the estimation of minimum pipelinetobuilding safety distances for riskinformed urban planning. The probabilistic procedure presented herein may be used for performancebased design/assessment of buildings and to define the path of new naturalgas pipeline networks.KeywordsDepartment of Structures for Engineering and Architecture,a, 2015 Elsevier . All rights reserved.2.Risktargeted safety distance of reinforced concrete buildings from naturalgas transmission pipelinesPaola Russoa, Friction factor。 Pipeline network。 Natural gas。The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, IranReceived 23 August 2015, Revised 13 December 2015, Accepted 15 December 2015, Available online 18 December 2015 Journal of Natural Gas Science and EngineeringVolume 28, January 2016,Pages 397–409Highlights?Natural gas pipeline network deliver natural gas from the production points to the consumers.?An analytical approach carried out to analysis unsteady natural gas pipeline network.?A wellknown gas pipeline network has been analyzed for validation purpose.?The effect of various parameters investigated on the unsteady pipeline network.AbstractThe natural gas pipeline network (including distribution network) may be subjected to some extreme conditions such as pipeline rapture, sudden changed demand and etc. The behavior of natural gas pipeline network should be properly identified to prevent network failure and have continued pipeline operation under these extreme conditions. These conditions usually cause unsteady be