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Performance-based Fire Protection Designs and Analyses for Occupant Evacuations in Super-long Road Tunnels

Chen Changkun,Xu Zhisheng

Strategic Study of CAE 2007, Volume 9, Issue 9,   Pages 78-83

Abstract:  Influences of various fire locations,  spacing between and widths of transverse passageways Peaks occur on the time curves of occupant evacuations at the gate of each transverse passageway When a local traffic jam occurs,  the RSET for the region near the gate of transverse passageways

Keywords： evacuation     fire     super-long tunnel     transverse passageway     performance- based fire protection design    

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Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 224-227 doi: 10.1007/s11465-009-0017-x

Abstract: An algorithm is presented for detecting transverse corner cracks at a steel plate surface using waveletAccording to characteristics of transverse corner crack images, the wavelet transform is used for theThe experiment shows that transverse corner cracks of steel plates can be more effectively extracted

Keywords： transverse corner cracks     defect detection     multi-scales wavelet analysis    

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Effect of axial load and transverse reinforcements on the seismic performance of reinforced concrete

Mounir Ait BELKACEM, Hakim BECHTOULA, Nouredine BOURAHLA, Adel Ait BELKACEM

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 831-851 doi: 10.1007/s11709-018-0513-3

Abstract: is to assess the seismic performance of reinforced concrete columns under different axial load and transverseEffects of variable axial load ratio and transverse reinforcement ratio on the seismic performance of

Keywords： reinforced concrete columns     axial load     transverse reinforcement     ductility    

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Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The effect of delamination on the stiffness reduction of composite pipes is studied in this research. The stiffness test of filament wound composite pipes is simulated using cohesive zone method. The modeling is accomplished to study the effect of the geometrical parameters including delamination size and its position with respect to loading direction on stiffness of the composite pipes. At first, finite element results for stiffness test of a perfect pipe without delamination are validated with the experimental results according to ASTM D2412. It is seen that the finite element results agree well with experimental results. Then the finite element model is developed for composite pips with delaminated areas with different primary shapes. Thus, the effect of the size of delaminated region on longitudinal and tangential directions and also its orientation with respect to loading direction on delamination propagation and stiffness reduction of the pipes is assessed.

Keywords： delamination     composite pipes     stiffness test     cohesive zone method    

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Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions

Frontiers of Structural and Civil Engineering   Pages 884-900 doi: 10.1007/s11709-022-0912-3

Abstract: weakening behavior of waterproof performance was investigated in the joints of shield tunnels under transverseFirst, the relationship between the joint opening and transverse deformation under three typical adjacentWhen the waterproof performance of these joints decreased to 50% and 30%, the transverse deformations

Keywords： shield tunnel     waterproof performance     horizontal transverse deformation     joint opening     weakening behavior    

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Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 417-429 doi: 10.1007/s11465-019-0584-4

Abstract: The transverse stiffness and vibration characteristics of discontinuous beams can significantly differThe normal function of the transverse vibration equation is obtained by separating variables.

Keywords： discontinuous beam     bending stiffness     transverse vibration     axial loads     gyroscopic moments    

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Laser vision sensing based on adaptive welding for aluminum alloy

CHEN Zhixiang, SONG Yonglun, ZHANG Jun, ZHANG Wanchun, JIANG Li, XIA Xuxin

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 218-223 doi: 10.1007/s11465-007-0038-2

Abstract: They were also applied for automatic seam tracking, such as automatic torch transverse alignment and

Keywords： adjustment     adaptive tungsten     transverse alignment     large-scale aluminum     geometry    

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Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete composite beam

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 704-721 doi: 10.1007/s11709-023-0941-6

Abstract: Moreover, a design method for transverse reinforcement is proposed; the transverse reinforcement is usedAccording to calculation results, the transverse reinforcement can be canceled when the compressive strength

Keywords： steel–UHPC composite beam     flexural performance     longitudinal shear performance     parametric study     transverse    

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Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 397-400 doi: 10.1007/s11465-009-0044-7

Abstract: The MFE method treats the moving mass as a moving part of the entire system, so that the transverse inertialThe numerical examples show that the inertial effects of the MM significantly affect the transverse responses

Keywords： simply supported beam     moving mass (MM)     transverse vibration     moving finite element (MFE)    

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The seismic analysis and design for the masonry buildingsin rural villages located in meizoseismal areas

Feng Yuan,Yi Dan,Bi Qiong

Strategic Study of CAE 2009, Volume 11, Issue 6,   Pages 138-145

Abstract: style="text-align: justify;">Based on the characteristics of large spacing masonry buildings with few transverse

Keywords： large spacing masonry buildings with few transverse walls     constructional columns     ring beams     ductility    

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The Regional Characteristics of the Atmospheric Environment and the Impact of Dust-storm in Beijing

Ren Zhenhai,Gao Qingxian,Su Fuqing,Wang Yaoting,Zhang Zhigang,Yang Xinxing

Strategic Study of CAE 2003, Volume 5, Issue 2,   Pages 49-56

Abstract:

The regional characteristics of the atmospheric environment and the impact in Beijing were discussed in details. Applying point set for the network, the transport passageways of the atmosphere were determined, and the concept of converging zone was put forward, and the characteristics of atmospheric pollution were analyzed. Applying the laser techniques, the vertical distribution of the aerosol was detected. It was shown that the environmental quality of the atmosphere in Beijing was relative to the pollution sources in the neighborhood around Beijing area. And it was confirmed that only by the simultaneous treatment of the pollution source in both Beijing and its neighborhood areas, can the environmental quality of the atmosphere in Beijing be improved.

By both the satellite detection techniques and the analysis of the wind stream fields of the atmosphere, the phenomena of dust-storm in China were researched, and the inner source and outersource of the dust-storm in China were determined. The especially strong dust-storm on March 22, 2002, was taken as an example, by which the distribution of the original sources of the dust-storm was resolved, and the lots of the bare lands in Spring in the north of the Yangzei River were involved. The initial process of the dust-storm appeared as a group of point sources, which were then combined into a sand-dust band. Finally, the dust-storm pollution of the large areas would appeare. The modern theory and concept for the environment in China were described chiefly.

Keywords： dust-storm     transport passageway     environment pollution     China    

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Study on Fire Smoke Properties of Subway Station Passageway by Simulation Experiments

Zhu Wei,Lu Ping,Liao Guangxuan,Li Peide,Hong Yixiu

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 91-96

Abstract:

A series of simulation experiments, carried out on the scale model of subway station passageway areTemperature relative value is provided to analyze the law of smoke temperature along the station passageway

Keywords： subway fire     scale model     smoke temperature     smoke configuration     CO concentration    

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The Arithmetic of GTEM Cell Axe-shaped Piece´s Side Curve Equation

Zhou Xu

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 36-38

Abstract:

To be convenient for machining, the conventional axe-shaped pieces were approximately designed. It is proved that the traditional transition in a GTEM Cell can not give a satisfactory transmission loss distribution. So this paper gives the exact continuous curve equation for the axe-shaped piece´s two sides for the first time.

Keywords： giga-hz transverse electromagnetic cell     the axe-shaped piece     the side curve equation     impedance matching    

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Title Author Date Type Operation

Performance-based Fire Protection Designs and Analyses for Occupant Evacuations in Super-long Road Tunnels

Chen Changkun,Xu Zhisheng

Journal Article

Detection for transverse corner cracks of steel plates’ surface using wavelet

Qiong ZHOU, Qi AN

Journal Article

Effect of axial load and transverse reinforcements on the seismic performance of reinforced concrete

Mounir Ait BELKACEM, Hakim BECHTOULA, Nouredine BOURAHLA, Adel Ait BELKACEM

Journal Article

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions

Journal Article

Bending and vibration of a discontinuous beam with a curvic coupling under different axial forces

Heng LIU, Jie HONG, Dayi ZHANG

Journal Article

Laser vision sensing based on adaptive welding for aluminum alloy

CHEN Zhixiang, SONG Yonglun, ZHANG Jun, ZHANG Wanchun, JIANG Li, XIA Xuxin

Journal Article

Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete composite beam

Journal Article

Vibration analysis of a simply supported beam under moving mass based on moving finite element method

Zhuchao YE, Huaihai CHEN,

Journal Article

The seismic analysis and design for the masonry buildingsin rural villages located in meizoseismal areas

Feng Yuan,Yi Dan,Bi Qiong

Journal Article

The Regional Characteristics of the Atmospheric Environment and the Impact of Dust-storm in Beijing

Ren Zhenhai,Gao Qingxian,Su Fuqing,Wang Yaoting,Zhang Zhigang,Yang Xinxing

Journal Article

Study on Fire Smoke Properties of Subway Station Passageway by Simulation Experiments

Zhu Wei,Lu Ping,Liao Guangxuan,Li Peide,Hong Yixiu

Journal Article

The Arithmetic of GTEM Cell Axe-shaped Piece´s Side Curve Equation

Zhou Xu

Journal Article