Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04440
Weizhong Lü, Qiaoting Zhou, T. Zhou, C. Huang, Liang Li, Yue Hua, Shaohua Zhou
{"title":"Preparation and thermochromic properties of B-Mg co-doped nano-VO<sub>2</sub>","authors":"Weizhong Lü, Qiaoting Zhou, T. Zhou, C. Huang, Liang Li, Yue Hua, Shaohua Zhou","doi":"10.3724/sp.j.1249.2022.04440","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04440","url":null,"abstract":"","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47720789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04402
Xuhong Suo, Guohui Liu, Dejin Zhang, Minglei Guan
SUO Xuhong, LIU Guohui, ZHANG Dejin , and GUAN Minglei 4 1) CCCC First Harbor Engineering Co. Ltd., Qingdao 266071, Shandong Province, P. R. China 2) Guangdong Key Laboratory for Urban Informatics, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 3) School of Architecture and Urban Planning, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 4) School of Artificial Intelligence, Shenzhen Polytechnic, Shenzhen 518055, Guangdong Province, P. R. China Abstract: The immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge adopts the construction mode of sinking from the east and west artificial islands to the middle to form a closed dragon mouth, and then sinking the final joint through. The final joint state parameter measurement is the key factor determining the success or failure of the project. Aiming at the problems of low efficiency, low measurement accuracy, poor reliability and inability to adjust the state of the closure in real time, this paper proposes a real-time measurement method for the formation of the closure state. Firstly, the measurement feature points are arranged on the end faces of the two pipe joints that form the closure, and the coordinates of the feature points in the pipe joint coordinate system are obtained by measurement. Secondly, in the process of sinking and laying, the measuring tower method and the manhole casting point method are used to measure and adjust the state of the closing mouth. Finally, the three measurement results are uniformly
{"title":"Closure state measurement of final joint of the immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge","authors":"Xuhong Suo, Guohui Liu, Dejin Zhang, Minglei Guan","doi":"10.3724/sp.j.1249.2022.04402","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04402","url":null,"abstract":"SUO Xuhong, LIU Guohui, ZHANG Dejin , and GUAN Minglei 4 1) CCCC First Harbor Engineering Co. Ltd., Qingdao 266071, Shandong Province, P. R. China 2) Guangdong Key Laboratory for Urban Informatics, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 3) School of Architecture and Urban Planning, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 4) School of Artificial Intelligence, Shenzhen Polytechnic, Shenzhen 518055, Guangdong Province, P. R. China Abstract: The immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge adopts the construction mode of sinking from the east and west artificial islands to the middle to form a closed dragon mouth, and then sinking the final joint through. The final joint state parameter measurement is the key factor determining the success or failure of the project. Aiming at the problems of low efficiency, low measurement accuracy, poor reliability and inability to adjust the state of the closure in real time, this paper proposes a real-time measurement method for the formation of the closure state. Firstly, the measurement feature points are arranged on the end faces of the two pipe joints that form the closure, and the coordinates of the feature points in the pipe joint coordinate system are obtained by measurement. Secondly, in the process of sinking and laying, the measuring tower method and the manhole casting point method are used to measure and adjust the state of the closing mouth. Finally, the three measurement results are uniformly","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47475319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: In order to improve the compatibility of polyvinyl alcohol (PVA) fiber and asphalt in application of asphalt pavement, the surface of PVA fiber is pretreated with KH-570 silane coupling agent. The tests such as contact angle, rotational viscosity, temperature scanning, multiple stress creep and recovery (MSCR) and the linear amplitude sweep (LAS) are conducted to study the compatibility and high temperature rheological properties of original PVA fiber (T) and surface treated PVA fiber (ST) modified asphalts with different contents, so as to evaluate the effect of surface modification process on the rheological properties of PVA fiber modified asphalt. The results show that the surface treatment process improves the compatibility of asphalt and PVA fiber. Compared with T, ST has better viscosity increasing effect, rutting resistance, and permanent deformation resistance at the same content,
{"title":"High temperature rheological properties of surface pretreated PVA fiber modified asphalt","authors":"Wei Zhang, Zhao Zhang, H. Cao, Xie Junjie, Huaxin Xu, Dongyu Niu","doi":"10.3724/sp.j.1249.2022.04409","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04409","url":null,"abstract":"Abstract: In order to improve the compatibility of polyvinyl alcohol (PVA) fiber and asphalt in application of asphalt pavement, the surface of PVA fiber is pretreated with KH-570 silane coupling agent. The tests such as contact angle, rotational viscosity, temperature scanning, multiple stress creep and recovery (MSCR) and the linear amplitude sweep (LAS) are conducted to study the compatibility and high temperature rheological properties of original PVA fiber (T) and surface treated PVA fiber (ST) modified asphalts with different contents, so as to evaluate the effect of surface modification process on the rheological properties of PVA fiber modified asphalt. The results show that the surface treatment process improves the compatibility of asphalt and PVA fiber. Compared with T, ST has better viscosity increasing effect, rutting resistance, and permanent deformation resistance at the same content,","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49293645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04369
Mingxing Chen, P. Yan, Xiaohong Li
CHEN Mingxing, YAN Peiguang, and LI Xiaohong 1) College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 2) School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang 621010, Sichuan Province, P. R. China Abstract: In order to improve the performance of perovskite solar cells, we optimize the contact interface structure between the functional layers, and adjust the thickness of each functional layer. By using COMSOL multi-physics simulation software, we simulate the structure of perovskite solar cells, and verify the influence of the optimized structure on the electrical performance of the cell. The results show that the inverted pyramid structure on the interface of functional layers will affect the photoelectric conversion efficiency. When the inverted pyramid structure is set between the electronic transmission layer and the light absorption layer, the maximum output power density of 27. 36 mW/cm2 can be obtained, the photoelectric conversion efficiency is 27. 3%, the corresponding open circuit voltage is 1. 19 V, the short circuit current density is 26. 64 mA/cm2, and the filling factor is 86. 19 %. The research results provide structural optimization ideas for further improving the overall performance of perovskite solar cells.
{"title":"Simulation of inverted pyramid perovskite solar cells","authors":"Mingxing Chen, P. Yan, Xiaohong Li","doi":"10.3724/sp.j.1249.2022.04369","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04369","url":null,"abstract":"CHEN Mingxing, YAN Peiguang, and LI Xiaohong 1) College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China 2) School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang 621010, Sichuan Province, P. R. China Abstract: In order to improve the performance of perovskite solar cells, we optimize the contact interface structure between the functional layers, and adjust the thickness of each functional layer. By using COMSOL multi-physics simulation software, we simulate the structure of perovskite solar cells, and verify the influence of the optimized structure on the electrical performance of the cell. The results show that the inverted pyramid structure on the interface of functional layers will affect the photoelectric conversion efficiency. When the inverted pyramid structure is set between the electronic transmission layer and the light absorption layer, the maximum output power density of 27. 36 mW/cm2 can be obtained, the photoelectric conversion efficiency is 27. 3%, the corresponding open circuit voltage is 1. 19 V, the short circuit current density is 26. 64 mA/cm2, and the filling factor is 86. 19 %. The research results provide structural optimization ideas for further improving the overall performance of perovskite solar cells.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49330508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04383
Maijie Zheng, Zhenkuan Chen, Congying Wang, Xuanke Zeng, Q. Wen, Y. Cai, Shixiang Xu, Jingzhen Li
{"title":"The temporal resolutions of the ultrafast imaging technologies based on nonlinear optics","authors":"Maijie Zheng, Zhenkuan Chen, Congying Wang, Xuanke Zeng, Q. Wen, Y. Cai, Shixiang Xu, Jingzhen Li","doi":"10.3724/sp.j.1249.2022.04383","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04383","url":null,"abstract":"","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42384238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04417
Guo Xu, Changhai Wang, X. Zhou
XU Guo, WANG Changhai, and ZHOU Xiaoqin 1) Nanning Exploration & Survey Design Institute Group Co. Ltd., Nanning 530028, Guangxi Zhuang Autonomous Region, P. R. China 2) Guangxi Communications Design Group Co. Ltd., Nanning 530029, Guangxi Zhuang Autonomous Region, P. R. China 3) School of Civil and Architecture Engineering, Guangxi Vocational and Technical College of Communications, Nanning 530023, Guangxi Zhuang Autonomous Region, P. R. China Abstract: In 3D geological modeling, it is generally difficult to effectively integrate geometric data and attribute data due to their different characteristics. In order to realize the integration of geological features, we propose a 3D geological modeling technology driven by geological features. We construct the geometric structure model based on 3D spatial data. By solving the geometric mapping and topological correlation of geological features, we establish the topological relationship between attribute data of various geological features and graphic elements of geometric model, and realize the effective constraints of attribute data and geometric data . Finally, we obtain a 3D geological model driven by geological features satisfying the unique topological relationship. The experimental verification is carried out through the actual engineering data located in the slope zone between Yunnan Guizhou Plateau and Guangxi basin. This technology solves the effective fusion of geometric data and attribute data, provides a comprehensive 3D model for geological comprehensive analysis and engineering application.
{"title":"Geological feature driven 3D geological modeling","authors":"Guo Xu, Changhai Wang, X. Zhou","doi":"10.3724/sp.j.1249.2022.04417","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04417","url":null,"abstract":"XU Guo, WANG Changhai, and ZHOU Xiaoqin 1) Nanning Exploration & Survey Design Institute Group Co. Ltd., Nanning 530028, Guangxi Zhuang Autonomous Region, P. R. China 2) Guangxi Communications Design Group Co. Ltd., Nanning 530029, Guangxi Zhuang Autonomous Region, P. R. China 3) School of Civil and Architecture Engineering, Guangxi Vocational and Technical College of Communications, Nanning 530023, Guangxi Zhuang Autonomous Region, P. R. China Abstract: In 3D geological modeling, it is generally difficult to effectively integrate geometric data and attribute data due to their different characteristics. In order to realize the integration of geological features, we propose a 3D geological modeling technology driven by geological features. We construct the geometric structure model based on 3D spatial data. By solving the geometric mapping and topological correlation of geological features, we establish the topological relationship between attribute data of various geological features and graphic elements of geometric model, and realize the effective constraints of attribute data and geometric data . Finally, we obtain a 3D geological model driven by geological features satisfying the unique topological relationship. The experimental verification is carried out through the actual engineering data located in the slope zone between Yunnan Guizhou Plateau and Guangxi basin. This technology solves the effective fusion of geometric data and attribute data, provides a comprehensive 3D model for geological comprehensive analysis and engineering application.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43256173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: In recent years, when the path planning based on ant colony algorithm is used to find the optimal path under multiple constraints, it is easy to fall into the local optimal solution and lead to slow convergence. Under the constraints of path length, number of effective scenic spots, path smoothness and path obstacle distance, this paper constructs a fitness function model to evaluate the quality of roaming path. A hybrid algorithm of bacterial foraging optimization and ant colony optimization (BFO-ACO) is proposed by using the taboo table optimization strategy to solve the deadlock problem in the traditional ant colony algorithm, which improves the path diversity in the early stage of the algorithm. The replication and dispersion mechanism of bacterial foraging algorithm is introduced to improve the convergence speed as well as jump out of the local optimum. Experimental results show that the BFOACO algorithm obtains a higher-quality roaming path with the fewer iterations under multi-constrained environments, which provides the foundation for designing roaming path.
{"title":"BFO-ACO roaming path planning based on multi-constraint scenarios","authors":"Xiaoling Lin, Zhiqiang Wang, Yanyan Guo, Zexuan Zhu","doi":"10.3724/sp.j.1249.2022.04463","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04463","url":null,"abstract":"Abstract: In recent years, when the path planning based on ant colony algorithm is used to find the optimal path under multiple constraints, it is easy to fall into the local optimal solution and lead to slow convergence. Under the constraints of path length, number of effective scenic spots, path smoothness and path obstacle distance, this paper constructs a fitness function model to evaluate the quality of roaming path. A hybrid algorithm of bacterial foraging optimization and ant colony optimization (BFO-ACO) is proposed by using the taboo table optimization strategy to solve the deadlock problem in the traditional ant colony algorithm, which improves the path diversity in the early stage of the algorithm. The replication and dispersion mechanism of bacterial foraging algorithm is introduced to improve the convergence speed as well as jump out of the local optimum. Experimental results show that the BFOACO algorithm obtains a higher-quality roaming path with the fewer iterations under multi-constrained environments, which provides the foundation for designing roaming path.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47939635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04377
Huibo Yan, Dingjian Zhou, Jincheng Huang, Jun Liu, Ming Wang, Zhongming Luo, Xi Luo, Mengyao Tian, Ting Zheng, Guijun Li, Ping Xu
Abstract: Cesium lead iodide dibromide (CsPbI2Br) perovskite is an ideal material for inorganic perovskite solar cells due to its suitable tolerance factor and good thermal stability. However, the defects of low power conversion efficiency and poor device reproducibility hinder the further improvement of the performance of inorganic CsPbI2Br solar cells. By studying the preparation process of CsPbI2Br inorganic perovskite solar cells, we find that the filmforming environment has a great influence on the uniformity, optical properties and device performance repeatability of CsPbI2Br films. In this paper, a stripping and idling assisted growing process strategy is proposed to obtain CsPbI2Br films with large grain size, high crystallinity, and low trap-defects density. The power conversion efficiency of CsPbI2Br perovskite solar cells reaches 14.1%. More importantly, this method greatly reduces the influence of ambient conditions on the film quality and improves the reproducibility of the device.
{"title":"High-efficiency inorganic perovskite solar cell based on a stripping and idling assisted growing technique","authors":"Huibo Yan, Dingjian Zhou, Jincheng Huang, Jun Liu, Ming Wang, Zhongming Luo, Xi Luo, Mengyao Tian, Ting Zheng, Guijun Li, Ping Xu","doi":"10.3724/sp.j.1249.2022.04377","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04377","url":null,"abstract":"Abstract: Cesium lead iodide dibromide (CsPbI2Br) perovskite is an ideal material for inorganic perovskite solar cells due to its suitable tolerance factor and good thermal stability. However, the defects of low power conversion efficiency and poor device reproducibility hinder the further improvement of the performance of inorganic CsPbI2Br solar cells. By studying the preparation process of CsPbI2Br inorganic perovskite solar cells, we find that the filmforming environment has a great influence on the uniformity, optical properties and device performance repeatability of CsPbI2Br films. In this paper, a stripping and idling assisted growing process strategy is proposed to obtain CsPbI2Br films with large grain size, high crystallinity, and low trap-defects density. The power conversion efficiency of CsPbI2Br perovskite solar cells reaches 14.1%. More importantly, this method greatly reduces the influence of ambient conditions on the film quality and improves the reproducibility of the device.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44549638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04432
Z. Wu, Chunyi Cui, Qicheng Leng, Minze Xu, Jiangtao Su
Abstract: In order to study the seismic vulnerability of pile-supported wharf structure, taking a vertical pilesupported wharf as the research object and considering the influence of the site, seismic spectrum characteristics and the uncertainty of ground motion intensity, we establish a dynamic nonlinear numerical model of structure-foundation soil coupling of vertical pile-supported wharf by using the geotechnical finite element software of Midas GTS NX. Selecting the maximum strain of pile foundation in soil as the damage index, we obtain the seismic vulnerability curves and the corresponding damage state probability based on the the incremental dynamic analysis method. The analysis results show that when peak ground acceleration is less than 0.80g, the wharf structure is mainly in mild damage state or moderate damage state, otherwise the probability of serious damage basically exceeds 50% and the structure will lose operational capacity. Based on the vulnerability analysis of pile foundation damage in foundation soil, the influence of earthquake on the vertical pile-supported wharf is described from macroscopic and quantitative point of view, which can provide reference for seismic design and disaster prevention prediction of vertical pilesupported wharf.
{"title":"Seismic vulnerability analysis of vertical pile-supported wharf structure","authors":"Z. Wu, Chunyi Cui, Qicheng Leng, Minze Xu, Jiangtao Su","doi":"10.3724/sp.j.1249.2022.04432","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04432","url":null,"abstract":"Abstract: In order to study the seismic vulnerability of pile-supported wharf structure, taking a vertical pilesupported wharf as the research object and considering the influence of the site, seismic spectrum characteristics and the uncertainty of ground motion intensity, we establish a dynamic nonlinear numerical model of structure-foundation soil coupling of vertical pile-supported wharf by using the geotechnical finite element software of Midas GTS NX. Selecting the maximum strain of pile foundation in soil as the damage index, we obtain the seismic vulnerability curves and the corresponding damage state probability based on the the incremental dynamic analysis method. The analysis results show that when peak ground acceleration is less than 0.80g, the wharf structure is mainly in mild damage state or moderate damage state, otherwise the probability of serious damage basically exceeds 50% and the structure will lose operational capacity. Based on the vulnerability analysis of pile foundation damage in foundation soil, the influence of earthquake on the vertical pile-supported wharf is described from macroscopic and quantitative point of view, which can provide reference for seismic design and disaster prevention prediction of vertical pilesupported wharf.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46209679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-01DOI: 10.3724/sp.j.1249.2022.04456
Zhuo Ni, Shaoni Mo, Zhen-qing Guo, Longhui Zhu, S. Zeng, Yang Xiao
Abstract: Polyurea is widely applied in various fields, including industrial buildings, petrochemicals and marine facilities, due to its excellent performance, but an excessively fast synthesis reaction makes it difficult to determine the kinetics of polyurea microcapsules by tranditional methods. To solve this problem, a mathematical model is developed by a pH numerical simulation method to calculate the kinetics parameters of the polyurea reaction through the change of pH value in the reaction process of the monomers of toluene diisocyanate (TDI) and triethylenetetramine (TETA). Fourier transform infrared spectroscopy (FTIR) is used to confirm the kinetics parameters obtained in the mentioned calculations. The results show that the pH numerical simulation method is simple to measure. The activation energy is 78 kJ/mol measured by the pH numerical simulation method, which is close to 88 kJ/mol measured by FTIR. The small variation of the activation energies between the two methods shows that pH numerical simulation method is feasible and reliable for rapid measurement of kinetics parameters of the PUA reaction.
{"title":"Kinetics determination of polyuria microcapsules by a pH numerical simulation method","authors":"Zhuo Ni, Shaoni Mo, Zhen-qing Guo, Longhui Zhu, S. Zeng, Yang Xiao","doi":"10.3724/sp.j.1249.2022.04456","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2022.04456","url":null,"abstract":"Abstract: Polyurea is widely applied in various fields, including industrial buildings, petrochemicals and marine facilities, due to its excellent performance, but an excessively fast synthesis reaction makes it difficult to determine the kinetics of polyurea microcapsules by tranditional methods. To solve this problem, a mathematical model is developed by a pH numerical simulation method to calculate the kinetics parameters of the polyurea reaction through the change of pH value in the reaction process of the monomers of toluene diisocyanate (TDI) and triethylenetetramine (TETA). Fourier transform infrared spectroscopy (FTIR) is used to confirm the kinetics parameters obtained in the mentioned calculations. The results show that the pH numerical simulation method is simple to measure. The activation energy is 78 kJ/mol measured by the pH numerical simulation method, which is close to 88 kJ/mol measured by FTIR. The small variation of the activation energies between the two methods shows that pH numerical simulation method is feasible and reliable for rapid measurement of kinetics parameters of the PUA reaction.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42905853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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