Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering最新文献_第2页

Anti-reflective crack performance of high viscosity and high elasticity asphalt mixture for ultra-thin wear layer 超薄磨损层高粘高弹性沥青混合料抗反射裂缝性能研究

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-09-01 DOI: 10.3724/sp.j.1249.2023.05554

Caili ZHANG, Yifei WANG, Weizhe DING, Huaiyi WANG, Fenglei YANG

引用次数: 0

Evaluation of rock mechanical parameters using nanoindentation 用纳米压痕评价岩石力学参数

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-09-01 DOI: 10.3724/sp.j.1249.2023.05608

Junwei WANG, Mingguang CHE, Xiao SONG, Jian SU, Jian ZHANG

{"title":"Evaluation of rock mechanical parameters using nanoindentation","authors":"Junwei WANG, Mingguang CHE, Xiao SONG, Jian SU, Jian ZHANG","doi":"10.3724/sp.j.1249.2023.05608","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2023.05608","url":null,"abstract":"WANG Junwei , CHE Mingguang 2, , SONG Xiao , SU Jian , and ZHANG Jian 4 1) Liaohe Oil Company of PetroChina, Panjin 114010, Liaoning Province, P. R. China 2) Research Institute of Petroleum Exploration and Development PetroChina, Beijing 100083, P. R. China 3) University of Science and Technology of China, Hefei 230026, Anhui Province, P. R. China 4) Great Wall Drilling Company of CNPC, Weiyuan 642450, Sichuan Province, P. R. China Abstract: To evaluate the reliability of obtaining rock mechanics parameters and calculating the rock brittleness index using small core samples, the nanoindentation technology is applied to obtain mechanical parameters with the small-scale core samples or cuttings of 1 mm × 1 mm. Before nanoindentation testing, the mineral phase analysis is carried out. The scale is upgraded by the convolution method to obtain the micromechanical parameters. Compared with the mechanical experimental results of nanoindentation, the absolute error is less than 10%, which meets the needs of brittleness index calculation. The proposed method can obtain rock mechanical parameters using broken core samples or cuttings, providing a new technical method for obtaining experimental parameters for brittleness evaluation.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135348006","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}

引用次数: 0

Experimental study on friction resistance test of ultra-high-speed fracturing fluid in the mine 矿井超高速压裂液摩擦阻力试验研究

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-09-01 DOI: 10.3724/sp.j.1249.2023.05615

Jingchen ZHANG, Jianyu YIN, Guodong WU, Hao LIU, Xiaodong GUO, Tuo YAN

引用次数: 0

Visualization technology and application analysis of shearing tests for different kinds of soil 不同类型土体剪切试验可视化技术及应用分析

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04485

Zihan WANG, Hao GE, Xiaokun JING, Chengzhi XIAO, Da HUANG

{"title":"Visualization technology and application analysis of shearing tests for different kinds of soil","authors":"Zihan WANG, Hao GE, Xiaokun JING, Chengzhi XIAO, Da HUANG","doi":"10.3724/sp.j.1249.2023.04485","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2023.04485","url":null,"abstract":"WANG Zihan, GE Hao, JING Xiaokun, XIAO Chengzhi, and HUANG Da School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, P. R. China A bstract: In order to study the application of visualization technology in shear tests of soil and the deformation mechanism of shear band, shearing tests on different kinds of soil are carried out by using the visualization shear equipment. Combining with digital image deformation measurement technology, the displacement images of soil specimens are obtained in shear processes. The deformation characteristics of sand, clay and gravel samples in shearing tests are studied. The results show that the shear bands of sand samples are the \"fish-shaped\" areas between the upper and lower shear surfaces when shearing failure occurs. The thicknesses of shear bands increase at first then decrease with the increasing shear displacement. The clay specimens are mainly destroyed along the horizontal planes between the upper and the lower shear boxes. And there is no obvious secondary shear surface. The shear bands of gravel samples are mainly concentrated in the \"arched\" areas between the primary and secondary shear surfaces in upper shearing boxes. The stresses on \"arched\" secondary shear surfaces are greater than that on horizontal primary shear surfaces, and the strength indexes are basically consistent. This research can provide scientific methodology for developing mechanism of shear zone of soil and the establishment of constitutive models.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135807016","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}

引用次数: 0

Encapsulation of enzymes into nanogel and associated degradation of phenolic compounds 酶在纳米凝胶中的包封及其对酚类化合物的降解

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04393

Wugao WU, Wang ZHANG, Yantao CHEN

{"title":"Encapsulation of enzymes into nanogel and associated degradation of phenolic compounds","authors":"Wugao WU, Wang ZHANG, Yantao CHEN","doi":"10.3724/sp.j.1249.2023.04393","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2023.04393","url":null,"abstract":"Abstract: As an effective means of degradation of phenolic pollutants, peroxidase exhibits high catalytic activity but poor environmental tolerance, and it is difficult to be widely used in sewage treatment. In order to enhance the environmental tolerance of horseradish peroxidase (HRP) and be used for phenol degradation, the modified horseradish peroxidase (HRP) was gelatinized and embedded in gel and acryloylated through the amino or carboxyl groups on the surface of HRP, and two encapsulated enzymes (n-HRP@PAM, c-HRP@PAM) were prepared by in situ free radical polymerization reaction with acrylamide (AAm). Mass spectrometry revealed that up to nine double bonds could be grafted on the carboxyl groups of HRP, and more than the number of double bonds grafted on its amino groups. Dynamic laser scattering showed that the two encapsulated enzymes were uniformly dispersed in aqueous solution. Furthermore, the enzymatic activity and thermal stability of two encapsulated enzymes were explored with the colorimetric reaction of tetramethylbenzidine, and the influence of HRP concentration and hydrogen peroxide on the degradation of phenolic compounds was studied. The environmental tolerance and","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135807021","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}

引用次数: 0

Corrosion detection mechanism of rebar based on ground penetrating radar 基于探地雷达的钢筋腐蚀检测机理

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04463

Shuxian HONG, Zuming HUANG, Dingzhong CHEN, Biqin DONG

{"title":"Corrosion detection mechanism of rebar based on ground penetrating radar","authors":"Shuxian HONG, Zuming HUANG, Dingzhong CHEN, Biqin DONG","doi":"10.3724/sp.j.1249.2023.04463","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2023.04463","url":null,"abstract":"HONG Shuxian, HUANG Zuming, CHEN Dingzhong, and DONG Biqin College of Civil and Transportation Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China Abstract: To study the mechanism of ground penetrating radar (GPR) on the detection of reinforcement corrosion, this paper employs GPR to periodically monitor the accelerated reinforcement corrosion process and designs various experimental setups to separate the effects of different corrosion patterns on GPR signals, including corrosioninduced cracks width and corrosion product diffusion. Results indicate that the reflected wave amplitude increases with accelerated corrosion before the appearance of corrosion-induced cracks. The reflected wave amplitude decreases with the widening of corrosion-induced cracks after their appearance. The reflected wave amplitude increases with the increase in the filling amount of corrosion product in vertical cracks. This study provides valuable insights into the relationship between GPR signals and reinforcement corrosion.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135807023","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}

引用次数: 0

UV activated persulfate-sulfite for degradation of tribromophenol 紫外活化过硫酸盐-亚硫酸盐降解三溴苯酚

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04386

Bo YANG, Miaoling XU, Huihuang CHEN, Mengting YANG

引用次数: 0

Influence of interfacial strength of reinforced concrete beams under dynamic loading 动载作用下钢筋混凝土梁界面强度的影响

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04470

Hao LIU, Yafang ZHANG, Kai ZHANG

{"title":"Influence of interfacial strength of reinforced concrete beams under dynamic loading","authors":"Hao LIU, Yafang ZHANG, Kai ZHANG","doi":"10.3724/sp.j.1249.2023.04470","DOIUrl":"https://doi.org/10.3724/sp.j.1249.2023.04470","url":null,"abstract":"LIU Hao 1, , ZHANG Yafang , and ZHANG Kai 2 1) Shenzhen Municipal Design & Research Institute Co. Ltd. , Shenzhen 518029, Guangdong Province, P. R. China 2) School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong Province, P. R. China Abstract: In order to study the effects of interfacial changes on the mechanical properties of concrete beams under dynamic loading, the dynamic responses of the beams under different interface strengths have been simulated in this paper, by using a finite element program RFPA3D-Dynamic. With considerations of material non-uniformity, the crack development and damage patterns of the beams, and the peak load curves and accumulated acoustic emission curves have been analyzed. The results show that the crack expansion patterns at different interface strengths vary significantly, and when the interface strength is small, the specimens mainly undergo bending tensile damage. Furthermore, as the interface strength increases, the damage pattern gradually changes to shear damage dominated by oblique cracks. The peak load of the specimen increases gradually with the increase of the interface strength, and tends to level off when it approaches the concrete strength. The accumulative acoustic emission energy shows a law of increasing first and then decreasing with the increase of the interface strength.","PeriodicalId":35396,"journal":{"name":"Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135807015","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}

引用次数: 0

Semi-flexible demand responsive transit scheduling based on ALNS-TS algorithm 基于ALNS-TS算法的半灵活需求响应交通调度

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04425

Wenzhou JIN, Hao DU, Weitiao WU

引用次数: 0

Mechanical and microscopic properties of reinforced soil of completely decomposed granite in Shenzhen 深圳花岗岩完全分解加筋土力学及微观特性研究

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2023-07-01 DOI: 10.3724/sp.j.1249.2023.04476

Dongning LI, Deshan MA, Rui TANG, Shaohua RAO, Yanwei WU, Dong SU

引用次数: 0