作者:
Wei Zhang;Zhe Liang;Hai Lin;Jinkai Shu;Aihe Wang
期刊:
E3S Web of Conferences,2022年350:01016-null ISSN:2267-1242
通讯作者:
Liang, Z.
作者机构:
Hunan City University, College of Municipal and Geomatics Engineering, 413000 Yiyang, China;Hunan City University, Hunan Rural Drinking Water Quality Safety Engineering Technology Research Center, 413000 Yiyang, China;Shenyang Jianzhu University, College of Municipal and Environmental Engineering, 110168 Shenyang, China;Yiyang Commodity Quality Supervision and Inspection Institute, 413000 Yiyang, China;[Wang A.; Shu J.; Zhang W.] Hunan City University, College of Municipal and Geomatics Engineering, Yiyang, 413000, China, Hunan City University, Hunan Rural Drinking Water Quality Safety Engineering Technology Research Center, Yiyang, 413000, China
通讯机构:
[Liang, Z.] S;Shenyang Jianzhu University, China
会议名称:
2022 International Conference on Environment, Renewable Energy and Green Chemical Engineering, EREGCE 2022
摘要:
In this paper, a regression analysis method of compressive strength curve of recycled concrete is proposed. Firstly, the compressive strength of recycled aggregate concrete at different ages is measured through laboratory tests. Then, based on the regression analysis method, the cubic function is used to simulate and analyze the compressive strength change of recycled aggregate concrete, and the age and comprehensive strength development law of recycled aggregate concrete are obtained.
摘要:
The most important factor in restricting safe and efficient is the unfavorable geological conditions ahead of the tunnel face during tunnel construction in karst area. To avoid the occurrence of geological disasters, advanced geological forecast technology is widely used to detect the development of unfavorable geological bodies. In order to better explain the time-frequency characteristics of GPR signals of tunnel cavern fillings, the Gaussian window function is selected according to the uncertainty principle, and the short-time Fourier transform is used to analyze and process the GPR signals of cavern fillings with different properties based on forward simulation. The results show that the time-frequency spectrum based on short-time Fourier transform can meticulously describe the process of change that takes places in time and frequency plane of GPR signals, which is beneficial to accurately extract the time-frequency characteristic parameters in GPR signals. When the electromagnetic wave wavelength of the GPR transmitting antenna is shorter than the detection depth of cavern fillings, two target reflectors which reflect the upper and lower reflecting interfaces of the fillings will appear in the spectrum of forward simulation signal. The relative errors of recognition results obtained according to the reflection time interval are all less than 5%, which provides a reference for the quantitative interpretation of GPR signals of tunnel cavern fillings.
摘要:
In order to get the best mix proportion of recycled concrete with super plasticizer, an experimental research method of mix proportion of recycled concrete with super plasticizer is designed. The whole experimental scheme and steps are described in detail. By adding a kind of additive, i.e. super plasticizer, into recycled concrete of different strength grades (prepared with waste concrete and mixed with part of natural concrete), and testing the performance of recycled concrete in laboratory, the best mix proportion of recycled concrete with super plasticizer is obtained, which lays a foundation for realizing the best parameters of high performance of recycled concrete.
作者:
Tao Chen;Xinjian Li;Zhemeng Zhang;Tongguang Yang;Shengtao He;...
期刊:
E3S Web of Conferences,2021年256:02035-null ISSN:2267-1242
通讯作者:
Chen, T.
作者机构:
[Liao J.; He S.; Zhang Z.; Shao X.; Chen T.] College of Electrical and Information Engineering, Hunan University, Changsha, Hunan Province, 410082, China;[Li X.] Yiyang Power Supply Company, State Grid Hunan Electric Power Company, Yiyang, Hunan Province, 413000, China;[Yang T.] College of Machinery and Electrical Engineering, Hunan City University, Yiyang, Hunan Province, 413049, China
通讯机构:
[Chen, T.] C;College of Electrical and Information Engineering, China
会议名称:
2021 International Conference on Power System and Energy Internet, PoSEI 2021
期刊:
E3S Web of Conferences,2021年251:02018-null ISSN:2267-1242
通讯作者:
Song, Y.
作者机构:
[He H.; Song Y.] Business School, Central South University, No.932 Lushan South Road, Changsha, China;[Cao B.] College of Information and Electronic Engineering, Hunan City University, No.518 Yingbin East Road, Yiyang, China
通讯机构:
[Song, Y.] B;Business School, No.932 Lushan South Road, China
会议名称:
2021 International Conference on Tourism, Economy and Environmental Sustainability, TEES 2021
期刊:
E3S Web of Conferences,2021年269:01010-null ISSN:2267-1242
通讯作者:
Yu, S.
作者机构:
[Ou Y.; Zhang L.; Zhang X.] Hunan Provincial Key Lab of Dark Tea and Jin-Hua, Hunan City University, Hunan, Yiyang, 413000, China;School of Materials and Chemical Engineering, Hunan City University, Hunan, Yiyang, 413000, China;[Yu S.] Hunan Provincial Key Lab of Dark Tea and Jin-Hua, Hunan City University, Hunan, Yiyang, 413000, China, School of Materials and Chemical Engineering, Hunan City University, Hunan, Yiyang, 413000, China
通讯机构:
[Yu, S.] H;Hunan Provincial Key Lab of Dark Tea and Jin-Hua, Hunan, China
会议名称:
2021 International Conference on Environmental Engineering, Agricultural Pollution and Hydraulical Studies, EEAPHS 2021
作者机构:
[Wen Y.; Feng C.; Zhou Q.] Guangxi Key Laboratory of Image and Graphic Intelligent Processing, Guilin University of Electronic Technology, Guilin, China;[Xue Y.] School of Municipal and Surveying Engineering, Hunan City University, Yiyang, China
会议名称:
27th International Conference on Neural Information Processing, ICONIP 2020
作者机构:
[Peng, Zhigao] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.
会议名称:
4th International Conference on Fluid Mechanics and Industrial Applications (FMIA)
会议时间:
JUN 27-28, 2020
会议地点:
ELECTR NETWORK
会议主办单位:
[Peng, Zhigao] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.
会议论文集名称:
Journal of Physics Conference Series
摘要:
Gas transport and storage mechanism in gas reservoirs with complex pore size distribution play a key role in gas production. In the nano-scale, during the process of density disturbance caused by depressurization development, notable output gas collides with the wall as they convey along the channel. The continuum assumption of fluid flow is therefore invalid, and taking the influence of particles to collide with solid walls into account is necessary. The effective viscosity and slip boundary conditions were introduced in the simulation. Meanwhile, because of the adsorption effect is one of the most important intrinsic properties of shale, the impact of surface adsorption on the solid wall by using Langmuir adsorption kinetics was also involved in our investigation. In this work, a unified LB model was developed for gas multiple transports and surface adsorption in nanopores. In the model, the double distribution function was employed for a coupled bulk flow and gas diffusion model. The model is valid within the range of the continuum regime to the transition regime and has been verified by the analytical solution and the results of some previously published works. The results show that (1) the driven force of the fluid, the combination coefficient of slippage and the Knudsen number of the flow have an impact on the adsorption rate, (2) adsorption effect only directly influence the local small region of the solid surface, and the induced concentration gradient makes the global concentration variation, (3) once acting the surface adsorption on the boundary, the flux falls more significant as Knudsen number increases.
作者机构:
[Yin, Canbin] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Hunan, Peoples R China.;[Yin, Canbin; Yin, CB; Yu, Fang] Hunan ProKey Real Estate Gruop Ltd, Yiyang 413000, Hunan, Peoples R China.
会议名称:
11th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)
会议时间:
APR 28-29, 2019
会议地点:
Qiqihar, PEOPLES R CHINA
会议主办单位:
[Yin, Canbin] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Hunan, Peoples R China.^[Yin, Canbin;Yu, Fang] Hunan ProKey Real Estate Gruop Ltd, Yiyang 413000, Hunan, Peoples R China.
会议论文集名称:
International Conference on Measuring Technology and Mechatronics Automation
关键词:
continuous rigid frame bridge;concrete box girder;sunshine temperature difference calculation;nonlinearity
摘要:
Based on the basis of observation data of box-beam temperature field, this study presented an comparative analysis of regulations on box-beam temperature gradient between China and foreign bridge engineering design, and proposed a new temperature difference distribution mode of concrete box beam along height of section. Finally, this study analyzed the external constraint temperature stress and temperature self-restrained stress of extra-long Longtan River bridge under different working conditions using ANSYS software, and compared them with measured results. This study provides reference for the measurement of sunshine temperature difference effect of box beam bridge.
摘要:
Metal/Semiconductor hybrid nanostructure is promising for its unique opt-electrical performance enhanced by surface plasmon resonance(SPR).However,the noble metals(Au,Ag,etc.)usually used for plasmonic are not cost-effective.In contrast,Bismuth is a cheap but promising metal with high plasmon-excitation efficiency comparable with Au.Here,the high crystalline Bi-nanorod/Si-nanodot hybrid structure is prepared by alternated sputtering of Bi and Si.FDTD simulation shows that the Bi-nanorod/Si-nanodot hybrid structure possesses red-shifted SPR resonance,in respect to that of Bi-nanorod.Some interesting SPR properties of Bi-nanorod/Si-nanodot hybrid structure including the split of longitudinal SPR mode is observed.Such hybrid-nanostructure could be useful in thermoelectric,sensor,battery electrodes,photodetector,etc.