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Erection technique of steel box-girder at anchor-side of north side span in Xihoumen suspension bridge

Lu Wei,Deng Hengchang,Zhang SHengli,Yang Ming,Yu Yeqiang,Li Pingli,Li Runzhe,Xiao Anbin

Strategic Study of CAE 2010, Volume 12, Issue 7,   Pages 47-52

Abstract: Several problems have been encountered due to severe natural environment during the erection of steelThe key technique and construction process of erection and linetype adjustment for the steel box girder

Keywords： suspension bridge     steel box-girder     Xihoumen Bridge     anchor-side of north side span     erection and adjustment    

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Structural design and construction of catway for the Fourth Nanjing Yangtze River Bridge

Luan Changhua, Shen Bin

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 48-53

Abstract: Structural design, erection, adjustment and demolition of the catway are systematically described in

Keywords： the Fourth Nanjing Yangtze River Bridge     catway structural design     catway erection     catway adjustment    

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Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 378-390 doi: 10.1007/s11783-011-0357-8

Abstract: Energy consumption is a major cause of air pollution in Beijing, and the adjustment of the energy structureIn this paper, we explored the future trend of energy structure adjustment in Beijing till 2020, designedBy implementing this systematic energy structure adjustment, the emissions of PM , PM , SO , NO , and2020 resemble each other, indicating that the potential of air quality improvement due to structure adjustmentExcept for energy structure adjustment, it is necessary to take further measures to ensure the attainment

Keywords： Beijing     energy structure adjustment     air quality     Community Multiscale Air Quality Model (CMAQ)     scenario    

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Optimization of aero-engine pipeline for avoiding vibration based on length adjustment of straight-line

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 11-11 doi: 10.1007/s11465-021-0667-x

Abstract: In the design and troubleshooting of aero-engine pipeline, the vibration reduction of the pipeline system is often achieved by adjusting the hoop layout, provided that the shape of pipeline remains unchanged. However, in reality, the pipeline system with the best antivibration performance may be obtained only by adjusting the pipeline shape. In this paper, a typical spatial pipeline is taken as the research object, the length of straight-line segment is taken as the design variable, and an innovative optimization method of avoiding vibration of aero-engine pipeline is proposed. The relationship between straight-line segment length and parameters that determine the geometric characteristics of the pipeline, such as the position of key reference points, bending angle, and hoop position, are derived in detail. Based on this, the parametric finite element model of the pipeline system is established. Taking the maximum first-order natural frequency of pipeline as the optimization objective and introducing process constraints and vibration avoidance constraints, the optimization model of the pipeline system is established. The genetic algorithm and the golden section algorithm are selected to solve the optimization model, and the relevant solution procedure is described in detail. Finally, two kinds of pipelines with different total lengths are selected to carry out a case study. Based on the analysis of the influence of straight-line segment length on the vibration characteristics of the pipeline system, the optimization methods developed in this paper are demonstrated. Results show that the developed optimization method can obtain the optimal single value or interval of the straight-line segment length while avoiding the excitation frequency. In addition, the optimization efficiency of the golden section algorithm is remarkably higher than that of the genetic algorithm for length optimization of a single straight-line segment.

Keywords： length adjustment     spatial pipeline     aero-engine     vibration avoidance optimization     genetic algorithm    

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Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

The Research Group for Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

Strategic Study of CAE 2015, Volume 17, Issue 7,   Pages 37-40

Abstract: powerful manufacturing industry, so it is urgent to conduct the system and mechanism reform and policy adjustment

Keywords： development of manufacturing industry     international experience     reform of the system     policy adjustment    

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Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 378-384 doi: 10.15302/J-FEM-2014057

Abstract: condition, indicates the direction of the industrial transformation and water consumption structural adjustment

Keywords： water resources     capacity of water resources     industrial transformation     multi-objective programming    

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The research on method of geometry-control during erection of the short-line bridge

Wang Min,Zhang Yongtao,Liu Jinghong,Liu Yi,Huang Yue

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 79-81

Abstract:

Focus on error control during fabricating and suspended splicing of box girders with segmentation method. After the analysis of the error reasons, and the combination with practical engineering—Sutong B2, it discussed control method, computing method and sensitive analysis method of linear control of prefabricated pre-stressed continuous beam bridge assembly with short line method.

Keywords： geometry-control     error analysis     least square method     erection of the short-line method    

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Strategic Study on Agricultural Structure Adjustment in China in the New Era

Qiyou Luo, Yang Liu, Huajun Tang, Zhenya Zhou, Fei You, Mingjie Gao

Strategic Study of CAE 2018, Volume 20, Issue 5,   Pages 31-38 doi: 10.15302/J-SSCAE-2018.05.005

Abstract: Furthermore, we elaborate the strategic conception of China’s agricultural structural adjustmentin the new era, and put forward adjustment and optimization plans for planting structure, animal husbandry

Keywords： structure adjustment     planting structure     animal husbandry structure     regional layout    

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Key construction techniques for superstructure of the Fourth Nanjing Yangtze River Bridge

He Chaoran,Pan Guilin,Li Youwei

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 42-47

Abstract: construction techniques for the superstructure, including lifting and installation of the cable saddles, erectioncables, rearrangement of the main cables, installation of the suspender cables and the cable clamps, erection

Keywords： Yangtze River Bridge     two-tower three-span suspension bridge     superstructure construction     main cable erection     steel box girder erection    

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Research on overall encryption adjustment technology of offshore oil field

Zhang Fengjiu,Luo Xianbo,Liu Yingxian,Zhao Chunming

Strategic Study of CAE 2011, Volume 13, Issue 5,   Pages 34-40

Abstract: for development of offshore fields of heavy oil in China, we put forward the study of comprehensive adjustmentThe research technology of comprehensive adjustment for integral well pattern thickening faces many technical, and the proposal of comprehensive adjustment for integral well pattern thickening in SZ36-1 oilfieldto 91.3 % after adjustment for producing degree of water flooding, forecasting greatly improved recoveryThe technique of adjustment for integral well pattern thickening is sure to be popularized and applied

Keywords： heavy oil     overall encryption     well pattern adjustment     water flooding     simulation    

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Supply-Demand Forecast and Structure Adjustment Paths of Planting and Breeding Industries Based on Changes

Shangguan Caixia, Lu Yan, Jing Li, Du Tao, Sun Jianjun, Zhang Xinyou

Strategic Study of CAE 2023, Volume 25, Issue 4,   Pages 128-136 doi: 10.15302/J-SSCAE-2023.04.004

Abstract:

Conducting supply-demand prediction and structural adjustment of plantingTargeted adjustment directions are proposed, including expanding the planting of protein feed crops,&

Keywords： consumption     supply and demand forecast of planting and breeding industry     planting and breeding structure adjustment    

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Joint compressed sensing imaging and phase adjustment via an iterative method for multistatic passive None

Jue WANG, Jun WANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 4,   Pages 557-568 doi: 10.1631/FITEE.1601423

Abstract: The resolution of the multistatic passive radar imaging system (MPRIS) is poor due to the narrow bandwidth of the signal transmitted by illuminators of opportunity. Moreover, the inaccuracies caused by the inaccurate tracking system or the error position measurement of illuminators or receivers can deteriorate the quality of an image. To improve the performance of an MPRIS, an imaging method based on the tomographic imaging principle is presented. Then the compressed sensing technique is extended to the MPRIS to realize high-resolution imaging. Furthermore, a phase correction technique is developed for compen-sating for phase errors in an MPRIS. Phase errors can be estimated by iteratively solving an equation that is derived by minimizing the mean recovery error of the reconstructed image based on the principle of fixed-point iteration technique. The technique is nonparametric and can be used to estimate phase errors of any form. The effectiveness and convergence of the technique are confirmed by numerical simulations.

Keywords： Multistatic passive radar     Compressed sensing     Phase adjustment     Fixed-point iteration technique    

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Unstressed state control method for process control of structure formed by stages

Qin Shunquan

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 72-78

Abstract: The control and adjustment of quantity of unstressed state of the structural elements provides a solution

Keywords： bridge constructed by stages     unstressed length     unstressed curvature     parallel operation     erection calculation    

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Construction of Near-Zero-Carbon Manufacturing System under the Carbon Border Adjustment Mechanism

Cheng Runting , Zhang Yongjun , Li Licheng , Ding Maosheng , Lin Jingchun , Zhang Chunfeng , Han Yongxia

Strategic Study of CAE doi: 10.15302/J-SSCAE-2023.07.037

Abstract: This study focuses on the impact of the EU Carbon Border Adjustment Mechanism on China’s manufacturing

Keywords： European Union emissions trading system     Carbon Border Adjustment Mechanism     zero-carbon transformation    

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A Comparative Assessment of Aerodynamic Models for Buffeting and Flutter of Long-Span Bridges

Igor Kavrakov, Guido Morgenthal

Engineering 2017, Volume 3, Issue 6,   Pages 823-838 doi: 10.1016/j.eng.2017.11.008

Abstract: time domain by comparing the dynamic response of a multi-span cable-stayed bridge during the critical erection

Keywords： Buffeting     Flutter     Long-span bridges     Bridge aerodynamics     Bridge aeroelasticity     Erection stage    

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Title Author Date Type Operation

Erection technique of steel box-girder at anchor-side of north side span in Xihoumen suspension bridge

Lu Wei,Deng Hengchang,Zhang SHengli,Yang Ming,Yu Yeqiang,Li Pingli,Li Runzhe,Xiao Anbin

Journal Article

Structural design and construction of catway for the Fourth Nanjing Yangtze River Bridge

Luan Changhua, Shen Bin

Journal Article

Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Journal Article

Optimization of aero-engine pipeline for avoiding vibration based on length adjustment of straight-line

Journal Article

Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

The Research Group for Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

Journal Article

Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Journal Article

The research on method of geometry-control during erection of the short-line bridge

Wang Min,Zhang Yongtao,Liu Jinghong,Liu Yi,Huang Yue

Journal Article

Strategic Study on Agricultural Structure Adjustment in China in the New Era

Qiyou Luo, Yang Liu, Huajun Tang, Zhenya Zhou, Fei You, Mingjie Gao

Journal Article

Key construction techniques for superstructure of the Fourth Nanjing Yangtze River Bridge

He Chaoran,Pan Guilin,Li Youwei

Journal Article

Research on overall encryption adjustment technology of offshore oil field

Zhang Fengjiu,Luo Xianbo,Liu Yingxian,Zhao Chunming

Journal Article

Supply-Demand Forecast and Structure Adjustment Paths of Planting and Breeding Industries Based on Changes

Shangguan Caixia, Lu Yan, Jing Li, Du Tao, Sun Jianjun, Zhang Xinyou

Journal Article

Joint compressed sensing imaging and phase adjustment via an iterative method for multistatic passive

Jue WANG, Jun WANG

Journal Article

Unstressed state control method for process control of structure formed by stages

Qin Shunquan

Journal Article

Construction of Near-Zero-Carbon Manufacturing System under the Carbon Border Adjustment Mechanism

Cheng Runting , Zhang Yongjun , Li Licheng , Ding Maosheng , Lin Jingchun , Zhang Chunfeng , Han Yongxia

Journal Article

A Comparative Assessment of Aerodynamic Models for Buffeting and Flutter of Long-Span Bridges

Igor Kavrakov, Guido Morgenthal

Journal Article