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Control measures of installation precision of Three Gorges Project ship lift rack and nut column

Wei Yan,Peng Hanlin,Lin Fan

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 91-96

Abstract:

According to technology requirements of installation precision and characteristicsmethod and installation accuracy control elements have been in detailed analysis, put forward the suitablerack, nut column installation construction process and control measures for Three Gorges Project shipIn engineering practice, use the test of datum point to control installation precision of the rack andThus various high precision standard technical difficulties of installation of the rack, nut column,

Keywords： Three Gorges Project ship lift     rack     nut column     installation of control     precision control    

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Lifting installation and prestressed cable construction of suspendome roof for Wuhan Gymnasium

GUO Zhengxing, SHI Kairong, LUO Bin, TIAN Qiliang, WU Julong, BI Shuiyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 87-92 doi: 10.1007/s11709-008-0005-y

Abstract: According to the structural characteristics of the roof, the lifting installation of upper latticed shelland the installation and tension of lower prestressed cables are introduced in detail.

Keywords： practical     new-type     installation     consistent     Gymnasium    

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Installation technology of counterweight system of Three Gorges Project ship lift

Cai Chunhua and Luo Bin

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 70-76

Abstract:

The installation technology of counterweight system of Three Gorges ProjectThe overall installation procedure of counterweight system has been put forward which are suitable forThen the construction processes and construction methods of balance chain guide installation, balancingpulley installation, main hoist rope installation and counterweight installation have been describedAt the same time, the installation technology system of counterweight system is set up.

Keywords： Three Gorges Project ship lift     counterweight system     installation procedure     installation technology    

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Experimental and modeling studies on installation of arc sprayed Zn anodes for protection of reinforced

Xianming SHI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 1-11 doi: 10.1007/s11709-016-0312-7

Abstract: Arc sprayed zinc (Zn) anode on concrete surfaces has been an emerging technology for protecting reinforced concrete structures from rebar corrosion in coastal environments. Many cathodic protection (CP) systems with arc sprayed Zn anodes will reach or exceed their design life in the near future and thus may function improperly or insufficiently, making it necessary to replace the aged anodes. However, prior to this study, little was known about the most effective profile for the concrete surface, for either new concrete or old concrete with existing Zn anodes removed. This work develops criteria to properly prepare the concrete surface before the application of new Zn anode. Experimental studies were conducted both in the laboratory and for a field structure in Oregon. Artificial neural network was used to achieve better understanding of the complex cause-and-effect relationships inherent in the Zn-mortar or Zn–concrete systems and was successful in finding meaningful, logical results from the bond strength data. The goal is to achieve strong initial bond strength of new Zn to concrete, which is essential for long-term performance of the CP system. The results from this case study suggest that it is necessary to adjust the anode removal and surface sandblasting based on the electrochemical age of the existing concrete. In all cases of sandblasting, minimize the exposure of large aggregates (e.g., those bigger than 19 mm in diameter).

Keywords： arc sprayed Zn     anode replacement     reinforced concrete     bridge preservation     neural networks     surface profile    

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Foundation form and supportingconstruction technique of offshore wind farm

Qin Shunquan,Zhang Ruixia,Li Juntang

Strategic Study of CAE 2010, Volume 12, Issue 11,   Pages 35-39

Abstract: According to the types of fan unit,the tower tube and installation of the fans were also introduced.

Keywords： offshore wind farm     foundation form     pile foundation     jacket base     suction barrel base     set of caisson     faninstallation    

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Energy and economic analysis of a point-focus concentrating photovoltaic system when its installation

C. RENNO, A. PERONE

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 384-395 doi: 10.1007/s11708-020-0717-9

Abstract: analyze energy and economic performances of a point-focus CPV system for a residential user when its installation

Keywords： CPV system     point-focus     experimental model     energy and economic analysis    

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Installation and demolition technology of Bailey truss of Three Gorges Project ship lift

Liu Yong,Chen Jianxia

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 77-82

Abstract:

The installation and demolition of Bailey truss support system of Threeof the narrow construction site, high construction strength, and big construction disturbance, the installationThe installation and demolition technology system of bailey truss support system has been establishedThis technology system ensures the smooth implementation of the installation and demolition of bailey

Keywords： ship lift     Bailey truss     installation     demolition     Three Gorges Project    

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The split installation and application of offshore wind turbine generator systems

Sun Guangxi,Huang Yaxin

Strategic Study of CAE 2010, Volume 12, Issue 11,   Pages 53-59

Abstract:

The installation methods used in offshore wind farm around the worldwere summarized, and the process of split installation, the set necessity and principles of assemblyAn installation method was proposed by sitting of the diving boat.The diving installation ship was made by installing a crane, and was located in the seabed during theThe installation method is suitable for offshore wind farm construction.

Keywords： offshore wind farm     method of assembled on shore     method of split installation     application    

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Construction Technology of Shanghai Jinmao Building

Ye Keming,Fan Qingguo

Strategic Study of CAE 2000, Volume 2, Issue 10,   Pages 42-49

Abstract:

Shanghai Jinmao building is the 3rd highest building in the world at present. The main building consists of reinforced concrete core wall and exterior structure steel frame. It is rather difficult to construct this edifice in such a poor soil condition in Shanghai. Proceeding from actual facts, Shanghai Construction Groups (SCG) makes efforts to conduct technology innovation, and absorbs advanced experiences domestic and abroad wildly. A unit of unique construction technique and a suitable managing system were developed with the growth of this building. SCG successfully solved a series of construction difficulties including deep-foundation work, mega-columns construction, high - altitude construction and erection, and so on. It only spent 4 years on this building, which set a high-speed record in construction history.

Keywords： Jinmao Building     extra-deep slurry wall     extra-high building     big-size steel tube pile     installation of steel    

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High precision installation technology of metal structure embedded parts of Three Gorges Project ship

Wei Shuman,Zhang Weiming and Li Chenzhi

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 87-90

Abstract: parts, and combined with the site construction environment, this article analyzes the high precision installation

Keywords： ship lift     metal structure embedded parts     high precision     installation technology     Three Gorges Project    

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Availability growth models and verification of power equipment

Jinyuan SHI, Jiamin XU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 529-538 doi: 10.1007/s11708-019-0624-0

Abstract: The general availability growth models for large scale complicated repairable system such as electric generating units, power station auxiliaries, and transmission and distribution installations are presented. The calculation formulas for the maintenance coefficient, mathematical expressions for general availability growth models, ways for estimating, and fitting on checking the parameters of the model are introduced. Availability growth models for electric generating units, power station auxiliaries, and transmission and distribution installations are given together with verification examples for availability growth models of 320–1000 MW nuclear power units and 1000 MW thermal power units, 200–1000 MW power station auxiliaries, and 220–500 kV transmission and distribution installations. The verification results for operation availability data show that the maintenance coefficients for electric generating units, power station auxiliaries, transmission and distribution installations conform to the power function, and general availability growth models conform to rules of availability growth tendency of power equipment.

Keywords： system     power equipment     electric generating unit     power station auxiliary     transmission and distribution installation    

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Study of mechanism of activating flux increasing weld penetration of AC A-TIG welding for aluminum alloy

HUANG Yong, FAN Ding, FAN Qinghua

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 442-447 doi: 10.1007/s11465-007-0076-9

Abstract: When multi-component flux AF305 is used as surface activating flux for an aluminum alloy, the weld pene tration of activating flux-tungsten inert-gas (A-TIG) welding is over two times more than that of conventional TIG welding. Using A-TIG welding with the modes of alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), respectively, the flux differently affects weld penetration when the polarity is different. After studied the effect of compelled arc con striction on weld penetration of AC welding, it is believed that the constriction of the whole arc root is not the main mechanism that flux AF305 dramatically improves weld penetration. The penetration has a relationship with the separate distribution of slag on the weld surface. Then, an observation of scanning electron microscopy (SEM) and an electronic data systems (EDS) analysis of slag were performed respectively. The separate distribution of slag on the weld pool during welding and the great constriction of arc spots were confirmed by TIG welding with helium shielding gas. The relationship between slag distribution and weld penetration was studied by adding aluminum powder into flux AF305 to change the distribution of slag. During welding, the separate distribution of slag on the weld pool results in the great constriction of arc spots, an increase in arc spot force, and an increase in Lorentz force within the arc and weld pool. Finally, the weld penetration is increased.

Keywords： A-TIG welding     surface     DCEN     electrode negative     increase    

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Effects of hypoxia on mRNA expression of housekeeping genes in rat brain tissue and primary cultured neural cells

YANG Yingzhong, MA Lan, GE Rili, FAN Wenhong, ZHU Lingling, ZHAO Tong, WU Yan, FAN Ming

Frontiers of Medicine 2008, Volume 2, Issue 3,   Pages 239-243 doi: 10.1007/s11684-008-0045-7

Abstract: Internal standards are critical for quantitative RNA analyses. Housekeeping genes are often used as internal standards with the assumption that their expression levels remain relatively constant in different experimental conditions. In this study, four commonly used housekeeping genes, Glyceraldehyde-3-phosphate dehydrogenase (GAPDH), ?-actin, 28S rRNA and 18S rRNA were selected to test whether this assumption is tenable under hypoxic conditions. We tested the RNA expression level of these four genes in different hypoxic conditions. Rats subjected to acute hypoxia for 2 hours were used for tissue detection. Primary cultured neural stem cells from E13 fetal rats were treated with 3% O or 10% O for 24 hours for experiments. In both experiments, expression levels of 28S rRNA and 18S rRNA were constant, independent of hypoxia types. However, expression levels of GAPDH and ?-actin were all changed in all kinds of hypoxic conditions. In particular, the mRNA expression level of GAPDH was increased by 43.4% under 3% O hypoxic conditions. These results suggest that 18S rRNA and 28S rRNA are reliable internal controls for comparative analyses of transcription under hypoxia. GAPDH appears particularly unfavorable for this purpose in hypoxic conditions.

Keywords： Glyceraldehyde-3-phosphate dehydrogenase     comparative     constant     unfavorable     independent    

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Architect Robert Fan Wenzhao and the design of Chung Chi campus

Daqing GU

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 4,   Pages 456-464 doi: 10.1007/s11709-010-0094-2

Abstract: Among them were those important figures in the modern Chinese architectural history such as Robert FanThis paper tells a story about Robert Fan and his design of the Chung Chi College campus in the 1950sRobert Fan’s concept of campus planning with reference to his early design experience in the mainland

Keywords： Hong Kongβmodern architecture     China’s mainlandβmigrant architects     Robert Fan Wenzhao     Chung Chi College    

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Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: A fan-stirred combustion chamber is deve-loped for spherically expanding flames, with P and P = 0.5–5 bar), fan

Keywords： fan-stirred combustion chamber     turbulence characteristics     particle image velocimetry (PIV)     methanol    

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Title Author Date Type Operation

Control measures of installation precision of Three Gorges Project ship lift rack and nut column

Wei Yan,Peng Hanlin,Lin Fan

Journal Article

Lifting installation and prestressed cable construction of suspendome roof for Wuhan Gymnasium

GUO Zhengxing, SHI Kairong, LUO Bin, TIAN Qiliang, WU Julong, BI Shuiyong

Journal Article

Installation technology of counterweight system of Three Gorges Project ship lift

Cai Chunhua and Luo Bin

Journal Article

Experimental and modeling studies on installation of arc sprayed Zn anodes for protection of reinforced

Xianming SHI

Journal Article

Foundation form and supportingconstruction technique of offshore wind farm

Qin Shunquan,Zhang Ruixia,Li Juntang

Journal Article

Energy and economic analysis of a point-focus concentrating photovoltaic system when its installation

C. RENNO, A. PERONE

Journal Article

Installation and demolition technology of Bailey truss of Three Gorges Project ship lift

Liu Yong,Chen Jianxia

Journal Article

The split installation and application of offshore wind turbine generator systems

Sun Guangxi,Huang Yaxin

Journal Article

Construction Technology of Shanghai Jinmao Building

Ye Keming,Fan Qingguo

Journal Article

High precision installation technology of metal structure embedded parts of Three Gorges Project ship

Wei Shuman,Zhang Weiming and Li Chenzhi

Journal Article

Availability growth models and verification of power equipment

Jinyuan SHI, Jiamin XU

Journal Article

Study of mechanism of activating flux increasing weld penetration of AC A-TIG welding for aluminum alloy

HUANG Yong, FAN Ding, FAN Qinghua

Journal Article

Effects of hypoxia on mRNA expression of housekeeping genes in rat brain tissue and primary cultured neural cells

YANG Yingzhong, MA Lan, GE Rili, FAN Wenhong, ZHU Lingling, ZHAO Tong, WU Yan, FAN Ming

Journal Article

Architect Robert Fan Wenzhao and the design of Chung Chi campus

Daqing GU

Journal Article

Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Journal Article