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学者姓名：陈橙
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Owing to the rare occurrence of tsunamis in the Arabian Sea, and the lack of reliable records on them, tsunami preparedness has not been prioritized in plans for the development of coastal cities in the Middle East. However, an increase in the number of earthquakes in the region in the recent past has highlighted the vulnerability of low-lying coastal areas to tsunamis. We investigate the potential of date palm forests to mitigate tsunamis in the Middle East. Experiments were conducted at a scale of 1:100 to assess the effectiveness of forests in reducing the intensity of tsunamis. The reflection at the front of the forest was negligibly small when the depth of flow was lower than the height of the canopy, and increased with the height of the tsunami wave when the depth of flow was higher than the height of the canopy. This shows that the structure of the canopy of date palm trees is key to reducing the energy of the tsunami. The reduction in the maximum depth of flow behind the forest increased with the height of the tsunami when the forest was longer than 120 m. The largest reductions obtained in the depth and velocity of flow behind the forest were 37% and 40%, respectively, when the forest was 180 m long and the tsunami wave was 7 m high. The results suggest that a date palm forest with a length of at least 150 m on flat ground can mitigate tsunamis in the Middle East.
Keyword ：
Date palm Date palm Experiment Experiment Forest Forest Middle East Middle East Mitigation Mitigation Tsunami Tsunami
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| GB/T 7714 | Nandasena, N. A. K. , Chen, Cheng , Hasan, Dania et al. Experimental investigation into the usage of date palm forests to mitigate tsunamis in the Middle East [J]. | LANDSCAPE AND ECOLOGICAL ENGINEERING , 2024 , 20 (3) : 397-413 . |
| MLA | Nandasena, N. A. K. et al. "Experimental investigation into the usage of date palm forests to mitigate tsunamis in the Middle East" . | LANDSCAPE AND ECOLOGICAL ENGINEERING 20 . 3 (2024) : 397-413 . |
| APA | Nandasena, N. A. K. , Chen, Cheng , Hasan, Dania , Alsereidi, Maryam , Almansoori, Fatima , Gabir, Feruz . Experimental investigation into the usage of date palm forests to mitigate tsunamis in the Middle East . | LANDSCAPE AND ECOLOGICAL ENGINEERING , 2024 , 20 (3) , 397-413 . |
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Since the number of bridges in China keeps increasing and some bridges with the damage problems brought by the age of are gradually taken into account, thus the health monitoring of bridges becomes much more important. Based on the research of China's intelligent sensing materials in the past decade, this paper summarizes the function of common sensing devices in crack pattern recognition, rust expansion monitoring, damage identification, curing shrinkage strain, and fatigue damage monitoring, and clarifies the feasibility of new monitoring technologies in practical engineering. It is also cited that the advantages and working principles of two data treatment, wavelet analysis and Long-term and short-term memory neural network, applied in the field of bridge health monitoring. The results show that intelligent sensing material and signal analysis technology has a wide application prospect in the future bridge surveillance work because of its good working performance. This paper can provide some reference for the application of intelligent sensing and signal analysis technology in the information of bridge health monitoring. © 2024 SPIE.
Keyword ：
Brain Brain Damage detection Damage detection Data handling Data handling Fiber Bragg gratings Fiber Bragg gratings Pattern recognition Pattern recognition Signal analysis Signal analysis Structural health monitoring Structural health monitoring Wavelet analysis Wavelet analysis
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| GB/T 7714 | Chen, Xiaonian , Chen, Cheng . Monitoring Technology and Data Processing Methods for Chinese Bridges Research Progress [C] . 2024 . |
| MLA | Chen, Xiaonian et al. "Monitoring Technology and Data Processing Methods for Chinese Bridges Research Progress" . (2024) . |
| APA | Chen, Xiaonian , Chen, Cheng . Monitoring Technology and Data Processing Methods for Chinese Bridges Research Progress . (2024) . |
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Mangroves have a remarkable wave dissipating effect. An experimental study on the tsunami impact building model and mangrove protection effect was carried out. The dam breaking wave was used to simulate the tsunami wave, and the mangrove and building models were installed in the flume. The protective effect of mangroves was studied by measuring the bore height before and after the tsunami wave passed through the mangroves and pressure during tsunami bores impacting buildings and pressure around the building during tsunami bores. The results show that, in all cases, bore heights reduced by mangrove are increased by building obstruction. On the premise that the mangroves are not destroyed, the disaster mitigating effect will not be affected by the wave intensity, but will increase with the mangrove density. Among the three arrangements, the annular arrangement has the best mitigating effect. The process of the tsunami bore impacting the building is divided into four stages: front-hitting, run-up, quasi-steady and recession. Under the protection of mangroves, the pressure at each stage is significantly reduced. For front-hitting pressure, the maximum pressure no longer appears here but in the run-up stage. For quasi-steady pressure, the time history of pressure will oscillate due to bubbles generated when the tsunami passes mangroves. According to Bernoulli principle, mangroves are determined to play a major role in reducing tsunami energy. Finally, based on the experimental data, equations for estimating the quasi-steady pressure in the center of the lower part of the building, and the distribution of pressure on the building are presented.
Keyword ：
Bore height Bore height Building Building Mangrove Mangrove Pressure Pressure Tsunami bore Tsunami bore
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| GB/T 7714 | Chen, Cheng , Peng, Chen , Nandasena, N. A. K. et al. Experimental investigation on tsunami impact reduction on a building by a Mangrove forest [J]. | ESTUARINE COASTAL AND SHELF SCIENCE , 2024 , 301 . |
| MLA | Chen, Cheng et al. "Experimental investigation on tsunami impact reduction on a building by a Mangrove forest" . | ESTUARINE COASTAL AND SHELF SCIENCE 301 (2024) . |
| APA | Chen, Cheng , Peng, Chen , Nandasena, N. A. K. , Yan, Hui . Experimental investigation on tsunami impact reduction on a building by a Mangrove forest . | ESTUARINE COASTAL AND SHELF SCIENCE , 2024 , 301 . |
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Tsunamis pose a significant threat to coastal engineering. A comprehensive physical experiment was conducted to examine the effect of air chambers on vertical structures with overhanging horizontal slabs under tsunami bores. This paper, serving as the second part of the series, contrasts with conditions without air chambers (flat slab as Part I) to underscore the chamber's effects. The experiment employed dam-break waves to simulate tsunamis, and the collected pressure data and experimental images were analyzed. Results show that the chambers restrict water flow, thereby enhancing the impact on the slab. This focusing effect greatly increases both maximum uplift and horizontal pressure (by almost 1.3 times). The uplift pressure rises with increasing chamber volume, while horizontal pressure escalates with greater beam volume. However, both pressures diminish as slab height increases. Water flowing into the chambers disperses air, generating numerous bubbles that accumulate above, forming an air layer that reduces pressure signal fluctuations. This phenomenon of entrained and trapped air is compared and analyzed with existing literature. The maximum pressure of the nearshore air chamber is greater than that of the offshore air chamber by 13% (3.68 kPa vs. 3.27 kPa), while the quasi-steady pressures of the two are almost equal. Differences in pressure between chambers result from the sequence of water flow impacts and reflections. New design envelope equations and conversion coefficients are proposed based on experimental data. The focusing coefficient, considering bore height, slab height, and chamber parameters, is summarized. Novel equations for estimating pressure on a flat slab with specific chambers are proposed, with validation results indicating high accuracy. © 2024 Elsevier Ltd
Keyword ：
Air chamber Air chamber Physical experiments Physical experiments Pressure Pressure Structure model Structure model Tsunami bore Tsunami bore
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| GB/T 7714 | Peng, C. , Chen, C. , Nandasena, N.A.K. et al. Experimental study of dam-break-like tsunami loads on vertical structures with overhanging horizontal slabs: Slab with air chamber [J]. | Ocean Engineering , 2024 , 311 . |
| MLA | Peng, C. et al. "Experimental study of dam-break-like tsunami loads on vertical structures with overhanging horizontal slabs: Slab with air chamber" . | Ocean Engineering 311 (2024) . |
| APA | Peng, C. , Chen, C. , Nandasena, N.A.K. , Deng, X. , Cai, F. , Guan, D. . Experimental study of dam-break-like tsunami loads on vertical structures with overhanging horizontal slabs: Slab with air chamber . | Ocean Engineering , 2024 , 311 . |
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The failure mode of the soil behind the rigid support structure of excavations parallel to tunneling was simulated using the adaptive finite-element limit analysis method. This study showed the effects of tunnel diameter, tunnel construction clear spacing, excavation insertion ratio, and soil strength on the failure mode of the soil. Based on the simulated results obtained from finite-element software, a stress field was constructed for the portion above the horizontal plane at the bottom of the excavation support structure. Three types of boundary value problems were solved based on different regional divisions. Eventually, the stress state at any point within the plastic zone was calculated, providing the active earth pressure on the support structure adjacent to the tunnel during its construction. A comparison between the stress characteristic method calculation results and the finite-element simulation results showed consistency, confirming the efficiency and accuracy of the stress characteristic method in calculating the earth pressure on the support structure of excavations parallel to tunneling. © 2024 American Society of Civil Engineers.
Keyword ：
Earth pressure Earth pressure Excavation support structure Excavation support structure Plastic zone Plastic zone Stress characteristic method Stress characteristic method Tunnel construction Tunnel construction
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| GB/T 7714 | Chen, C. , Lv, Y.-P. , Li, X.-J. et al. Active Earth Pressure on the Rigid Support Structures of Excavations Parallel to Tunnel Construction [J]. | International Journal of Geomechanics , 2024 , 24 (8) . |
| MLA | Chen, C. et al. "Active Earth Pressure on the Rigid Support Structures of Excavations Parallel to Tunnel Construction" . | International Journal of Geomechanics 24 . 8 (2024) . |
| APA | Chen, C. , Lv, Y.-P. , Li, X.-J. , Chen, F.-Q. . Active Earth Pressure on the Rigid Support Structures of Excavations Parallel to Tunnel Construction . | International Journal of Geomechanics , 2024 , 24 (8) . |
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In recent years, most of the research on typhoon in Fujian Province of China has stayed in the typhoon wave simulation under the influence of wind fields. In order to study the influence of land terrain on typhoon wave fields, the terrain height parameters are introduced into the wind field simulation through the third-generation typhoon wave numerical model. The numerical simulation results of the model are verified and analyzed by referring to the data of significant wave height and wind speed of typhoon Fung-wong (200808) and typhoon Jangmi (200815) when it is across Taiwan Island. The results show that the relative error of the maximum wind speed and the significant wave height is reduced after the wind field optimization, which is more consistent with the observed data. The model accuracy is improved after optimization; Typhoon Fung-Wong, which crossed Taiwan, showed the most significant reduction in wind speed. Significant wave height is positively correlated with wind speed. The wave height distribution shows a gradually decreasing trend from the cyclone center to the coast, and the significant wave heights of the typhoon moving direction show pronounced asymmetry. Affected by the land topography, the distribution of significant wave height generally shows a downward trend, and the area of height water level area decreases.
Keyword ：
Significant wave height Significant wave height SWAN model SWAN model Taiwan Strait Taiwan Strait Terrain parameters Terrain parameters Typhoon Typhoon Wind field building Wind field building
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| GB/T 7714 | Chen, Cheng , Peng, Chen , Xiao, Hong et al. Typhoon field construction and wind-induced wave model optimization based on topographic parameters [J]. | TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES , 2023 , 34 (1) . |
| MLA | Chen, Cheng et al. "Typhoon field construction and wind-induced wave model optimization based on topographic parameters" . | TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES 34 . 1 (2023) . |
| APA | Chen, Cheng , Peng, Chen , Xiao, Hong , Wei, Minjian , Wang, Tingyu . Typhoon field construction and wind-induced wave model optimization based on topographic parameters . | TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES , 2023 , 34 (1) . |
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Extreme weather events and anthropogenic activity have severely impacted the Minjiang estuary (MJE) with evolution patterns in recent decades. Determining the estuarine alluvial evolution pattern is crucial for the sustainable development of densely populated coastal areas. Using chart data, this paper analyzed how the MJE's flushing and siltation changed over time (1950-2019). The findings indicate that, in the past 70 years, the MJE has evolved through seven stages of flushing and siltation under the condition of decreasing incoming sediment: "significant siltation -siltation -minor siltation -significant erosion -significant siltation -minor siltation -significant erosion". Despite decreased incoming material, the estuary underwent substantial siltation from 1998 to 2005. Extreme meteorological conditions were the cause of this anomaly. The "severe flushing" phenomenon occurred in the study area from 2011 to 2019, and the comparison of pre-dam and post-dam at the estuary revealed that extreme weather can only adjust in stages and cannot change the overall state of the estuary flushing due to the reduction of incoming sediment in the basin. According to the EOF (Empirical Orthogonal/ Eigen Function) study of four sections of the estuary, it is most impacted by incoming sediment from the watershed, followed by severe weather conditions. Our research is crucial for comprehending how human behavior and harsh weather might affect the development of MJE, and it offers sound advice for the long-term management of MJE.
Keyword ：
China China Climate change Climate change Geomorphological response Geomorphological response Human activities Human activities Minjiang estuary Minjiang estuary
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| GB/T 7714 | Lai, Xiaohe , Hou, Yuebao , Jia, Jianping et al. Rapid change of erosion-deposition evolution in the Minjiang estuary, Southeast China [J]. | OCEAN & COASTAL MANAGEMENT , 2023 , 238 . |
| MLA | Lai, Xiaohe et al. "Rapid change of erosion-deposition evolution in the Minjiang estuary, Southeast China" . | OCEAN & COASTAL MANAGEMENT 238 (2023) . |
| APA | Lai, Xiaohe , Hou, Yuebao , Jia, Jianping , Chen, Cheng , Su, Yan , Jiang, Jun et al. Rapid change of erosion-deposition evolution in the Minjiang estuary, Southeast China . | OCEAN & COASTAL MANAGEMENT , 2023 , 238 . |
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Mangroves are crucial for protecting coastal areas against extreme disasters such as tsunamis and storm surges. An experimental study was conducted to determine how mangroves can mitigate the tsunami wave propagation. The test was performed in a flume, where mangrove models were installed on a slope, and dam-burst waves were used to simulate tsunami waves. To study how mangrove forests reduce the impact of tsunamis, this paper measured the heights of the incoming waves under different initial conditions (tsunami wave intensity and initial water depth) and plant factors (arrangement and distribution density) and described the reduction process. The results show that, after passing through the mangrove, the tsunami bore height will decrease within a certain range as the initial water depth increases. However, there is no correlation between the increase of inundation level and the drop of water level. The bore height attenuation is more significant at higher density of mangroves, but after tsunami passing through the mangroves, the relative bore height will decrease. When the distribution density of mangroves is constant, the wave attenuation at different locations (before, on and after the slope) shows different relationships with the initial water depth and wave height for different models. The transmission coefficient (Ki) shows a parabolic correlation with its density. The proportion of the energy loss caused by the mangrove resistance to the total energy (Eb) is defined as Cm2. The variation trend of Cm2 corresponds to the tsunami wave energy attenuation rate (Ca) and Ki.
Keyword ：
arrangement arrangement distribution density distribution density mangroves mangroves transmission coefficient transmission coefficient tsunami wave tsunami wave
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| GB/T 7714 | Chen, Cheng , Peng, Chen , Yan, Hui et al. Experimental study on the mitigation effect of mangroves during tsunami wave propagation [J]. | ACTA OCEANOLOGICA SINICA , 2023 , 42 (7) : 124-137 . |
| MLA | Chen, Cheng et al. "Experimental study on the mitigation effect of mangroves during tsunami wave propagation" . | ACTA OCEANOLOGICA SINICA 42 . 7 (2023) : 124-137 . |
| APA | Chen, Cheng , Peng, Chen , Yan, Hui , Wei, Minjian , Wang, Tingyu . Experimental study on the mitigation effect of mangroves during tsunami wave propagation . | ACTA OCEANOLOGICA SINICA , 2023 , 42 (7) , 124-137 . |
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In recent years, most research on typhoons in the Taiwan Strait and its adjacent waters has focused on simulating typhoon waves under the influence of wind fields. In order to study the influence of tidal level changes on typhoon waves, a numerical model was established in the Taiwan Strait based on the third-generation ocean wave model SWAN. The simulation results of the tide level during the corresponding typhoon landing time were incorporated into the model to optimize its performance. Subsequently, the wave height of the typhoon landing at the lowest tide level was compared with that at the highest tide level. This comparison serves as a reference and warning for ocean engineering, highlighting the hazards of the typhoon landing at high tide. The simulation results were verified and analyzed using the measured data of significant wave heights and wind speeds when typhoons Mekkhala (2006) and Maria (0607) approached. The results show that after optimization, the relative error of the significant wave peak is reduced. Furthermore, there has been a decrease in the maximum wind speed, bringing it closer to the measured value. These improvements signify enhanced model accuracy. The tide level has a great influence on the typhoon wave, and the tide level height at the time of the typhoon landing is positively correlated with the significant wave height of the waves generated by the typhoon. When the typhoon's landing time coincides with the high tide level, the resulting waves are significantly higher, reaching up to 0.71 m. This has a substantial impact on the safety of marine structures, particularly breakwaters.
Keyword ：
significant wave height significant wave height SWAN model SWAN model Taiwan Strait Taiwan Strait tide level shift tide level shift
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| GB/T 7714 | Chen, Cheng , Peng, Chen , Xiao, Hong et al. Effect of Tide Level Change on Typhoon Waves in the Taiwan Strait and Its Adjacent Waters [J]. | WATER , 2023 , 15 (10) . |
| MLA | Chen, Cheng et al. "Effect of Tide Level Change on Typhoon Waves in the Taiwan Strait and Its Adjacent Waters" . | WATER 15 . 10 (2023) . |
| APA | Chen, Cheng , Peng, Chen , Xiao, Hong , Wei, Minjian , Wang, Tingyu . Effect of Tide Level Change on Typhoon Waves in the Taiwan Strait and Its Adjacent Waters . | WATER , 2023 , 15 (10) . |
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Tsunami wave characteristics are greatly influenced by the initial water level when they attack structures. In this study, experimental and numerical investigations were conducted to investigated the relationship between tsunami wave characteristics and initial water levels. Results showed that, the wave height, wave velocity, and Froude number increase with the increase of tsunami wave intensity; the time history of water levels were influenced by the different initial water level conditions; the analytical solution proposed by Chanson (2005) may be extended to wet-bed conditions (for initial water level < 0.36 tsunami bore height in our experimental set-up). Due to the limitations of experimental ranges in the laboratory, the validated numerical model can provide more results for wider experimental ranges for tsunami bore investigations. It was observed from numerical results that, tsunami bore height increases with the increase of reservoir water level; tsunami bore velocity decreases with the increased initial water level on the bed; as the initial water level on the bed gradually increases, the mean tsunami bore Froude number shows a downward trend.
Keyword ：
dam break wave dam break wave initial water level initial water level tsunami tsunami
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| GB/T 7714 | Lai, Xiaohe , Deng, Xin , Chen, Cheng et al. Study on the relationship between tsunami waves in dam break state and initial water levels [J]. | BRODOGRADNJA , 2023 , 74 (4) : 89-103 . |
| MLA | Lai, Xiaohe et al. "Study on the relationship between tsunami waves in dam break state and initial water levels" . | BRODOGRADNJA 74 . 4 (2023) : 89-103 . |
| APA | Lai, Xiaohe , Deng, Xin , Chen, Cheng , Peng, Chen , Li, Zixuan , Chen, Haoyan . Study on the relationship between tsunami waves in dam break state and initial water levels . | BRODOGRADNJA , 2023 , 74 (4) , 89-103 . |
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