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International journal of structural and civil engineering research最新文献

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Application of BP Neural Network in TBM Tunneling Performance Prediction BP神经网络在TBM掘进性能预测中的应用
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.10.4.157-164
Chao Wan, S. Qiao, Hongzhong Liu
{"title":"Application of BP Neural Network in TBM Tunneling Performance Prediction","authors":"Chao Wan, S. Qiao, Hongzhong Liu","doi":"10.18178/ijscer.10.4.157-164","DOIUrl":"https://doi.org/10.18178/ijscer.10.4.157-164","url":null,"abstract":"The tunneling performance of Tunnel Boring Machine (TBM) is the key factor to affect its excavation effect and efficiency. This paper is based on the TBM tunnel project of Minle parking lot of Shenzhen Metro Line 6 phase II, using BP neural network and selecting 30 groups of sample data from the project cases as the research aims to predict the tunneling performance of TBM. The prediction curves corresponding to penetration, cutterhead thrust and cutterhead torque are obtained respectively, and the existing change rules are analyzed. At the same time, the prediction results of BP neural network are compared with the results of regression analysis and field measurement to verify the rationality and applicability of the BP neural network prediction algorithm. The results show that: (1) the error of BP neural network prediction algorithm is less than 3%, the overall results show that the method is suitable for TBM tunneling parameters prediction; (2) compared with the prediction results of regression analysis, it has smaller error, thus to a certain extent, BP neural network prediction algorithm has higher accuracy, which can provide reference for the prediction of TBM tunneling performance under similar geological conditions test. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129312078","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
Dummy Regression to Predict Resilient Modulus of Cohesive Subgrade Soils 粘性路基土弹性模量的虚拟回归预测
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.10.4.172-177
M. Khasawneh, Rabea AL-Jarazi
{"title":"Dummy Regression to Predict Resilient Modulus of Cohesive Subgrade Soils","authors":"M. Khasawneh, Rabea AL-Jarazi","doi":"10.18178/ijscer.10.4.172-177","DOIUrl":"https://doi.org/10.18178/ijscer.10.4.172-177","url":null,"abstract":"Owing to a significant contribution of resilient modulus of subgrade soils in the overall performance of roads or railways, it is crucial to provide the best prediction of it. In other words, regarding road pavements, the behavior of pavements depends on the resilient deformations. This paper presents a new predictive equation for the resilient modulus of cohesive subgrade soils (A-4a and A-6a) using dummy regression. The results show that resilient modulus (MR) values exhibited a slight increase as the confining pressure increases. A-4a compacted at Optimum Moisture Content (OMC) found to attain higher values when compared to other conditions and different soils. A prediction model using dummy variables is proposed and shown to be able to predict the resilient modulus of cohesive subgrade soils over a range of stress states and water contents. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127141703","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
Evaluation of Diameter and Distance of Sacrificial Piles from the Bridge Pier in Reducing Local Scour 减少桥墩局部冲刷牺牲桩直径和距离的评价
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.10.3.113-118
J. Gamboa, Valeria Quintanilla, E. Guzman, S. Santos
{"title":"Evaluation of Diameter and Distance of Sacrificial Piles from the Bridge Pier in Reducing Local Scour","authors":"J. Gamboa, Valeria Quintanilla, E. Guzman, S. Santos","doi":"10.18178/ijscer.10.3.113-118","DOIUrl":"https://doi.org/10.18178/ijscer.10.3.113-118","url":null,"abstract":"In this research, it was analyzed influence of variation of sacrificial piles diameter, as well as the distance between front pile and the face of the pier in reducing local scour depth. For this purpose, it was calibrated a physical test of an isolated cylindrical pier developed in a previous research. For calibration, numerical models were made with Manning's roughness coefficients of the sand of 0.023, 0.024 and 0.025 and the application of Froechlich and Colorado State University (CSU) equations to calculate the local scour depth. After that, 12 numerical models were made with the addition of sacrificial piles in a 30° triangular configuration to the calibrated model. The diameters of sacrificial piles were 5, 6, 7.5 and 10 mm and distances between front pile and the face pier were 75, 90 and 105 mm. According to the results, the highest percentage of local scour reduction was obtained when the sacrificial piles had a diameter of 10 mm and the distance between the front pile and the pier was equal to 105 mm. In this sense, when the distance between the front pile and the face pier was greater, the percentage of local scour reduction was higher. Also, based on the results, it is concluded that, Froechlich's equations and CSU lose precision when there are sacrificial piles.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130041706","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: 1
Design Method of Rough Terrain Detection and Avoidance in Unknown Environment for Space Rover 空间漫游者未知环境下粗糙地形检测与规避设计方法
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.1.63-68
Sosuke Chiba, K. Uchiyama, Kai Masuda
{"title":"Design Method of Rough Terrain Detection and Avoidance in Unknown Environment for Space Rover","authors":"Sosuke Chiba, K. Uchiyama, Kai Masuda","doi":"10.18178/ijscer.8.1.63-68","DOIUrl":"https://doi.org/10.18178/ijscer.8.1.63-68","url":null,"abstract":"This paper describes the guidance and control method for an exploration rover in an unknown planet where a rough area exists. A mission of a space rover is sometimes interrupted when the rover falls into the rough area. To overcome this problem, we propose the method that detects and avoids rough terrain by an observer without the use of images of a camera mounted on the rover. The observer, which is based on Disturbance Accommodating Control (DAC) method, estimates nonlinear terms including running resistance and slip ratio because nonlinear term changes by rough terrain such as high soil resistance area. Therefore, the proposed method enables to detect and avoid the rough terrain automatically without the use of vision sensors. Space rover also should identify its position during a mission because of a non-GPS environment. Expanded Kalman Filter simultaneous localization and mapping (EKF-SLAM) is applied to a space rover. The numerical simulation is conducted to verify that a space rover detects and avoids the rough terrain smoothly by using the proposed method.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130046824","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
Evolution of the Spatial Types of Wuhan Urban Congregated Housing from a Public/Private Space Perspective (1949–1966) 公共/私人空间视角下武汉城市集聚住宅空间类型演变(1949-1966)
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.11.3.58-64
Shasha Li
{"title":"Evolution of the Spatial Types of Wuhan Urban Congregated Housing from a Public/Private Space Perspective (1949–1966)","authors":"Shasha Li","doi":"10.18178/ijscer.11.3.58-64","DOIUrl":"https://doi.org/10.18178/ijscer.11.3.58-64","url":null,"abstract":"—Modern urban housing in China has its own development path and distinctive spatial forms under the influence of China’s socialist political and economic system. It thus contains its complex and specific public/private relationship dimensions .The present study focuses on analyzing the spatial types of congregated housing in Wuhan through cases from 1949 to 1966 and exploring how their residential spaces participate in shaping the social public /private relations of the nation, society, individual and family in the same period by constructing the spatial relations among the city, residential area, residential building and domestic space. This study may help to enhance understanding of the intricate and dynamic relationships between public and private spaces in Chinese urban housing of the time, which differ from their counterparts in Western cities. It also provides an enlightenment on research on public/private spaces in current urban housing in varied contexts.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132394517","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 Investigation of GFRP Hybrid Full-scale Bridge Deck Panels Subjected to AASHTO Design Truck Wheel Load GFRP混合动力全尺寸桥面板承受AASHTO设计卡车车轮荷载的试验研究
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.3.280-283
Hesham Tuwair, Jonathan T. Drury, Jeffery Volz
{"title":"Experimental Investigation of GFRP Hybrid Full-scale Bridge Deck Panels Subjected to AASHTO Design Truck Wheel Load","authors":"Hesham Tuwair, Jonathan T. Drury, Jeffery Volz","doi":"10.18178/ijscer.8.3.280-283","DOIUrl":"https://doi.org/10.18178/ijscer.8.3.280-283","url":null,"abstract":"This paper aims to demonstrate the feasibility of using a novel glass fiber-reinforced polymer (GFRP) sandwich panel in bridge deck applications. This new system integrates a polyurethane foam core that is sandwiched between two GFRP facings. With the purpose of investigating the performance of this new system, experimental static testing was performed. The investigation focused on the ultimate flexural strength capacity, stiffness, and panel-to-panel connection of the proposed bridge deck. The results of the flexural testing showed that the tested bridge deck panels exceeded the AASHTO Design Code Strength requirements by nearly three times. In addition, the bonded butt-type sandwich panel-to-panel connection transferred the loading between the panels beyond that required by code. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"35 34","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114087618","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
Fracture Analysis of Tube-gusset-intersecting Joint Based on SWDM Microscopic Fracture Mechanism 基于SWDM细观断裂机理的管-扣-交接头断裂分析
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.12.3.76-84
Rujie Deng, Xianqiao Meng, Shulin Zhang, Z. Li
{"title":"Fracture Analysis of Tube-gusset-intersecting Joint Based on SWDM Microscopic Fracture Mechanism","authors":"Rujie Deng, Xianqiao Meng, Shulin Zhang, Z. Li","doi":"10.18178/ijscer.12.3.76-84","DOIUrl":"https://doi.org/10.18178/ijscer.12.3.76-84","url":null,"abstract":".","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132132328","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
Flexural and Shear Behavior of Rubberized High Strength Reinforced Concrete Beams Strengthened with CFRP CFRP加固橡胶高强混凝土梁的抗弯抗剪性能
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.10.3.98-105
Ahmed S. Eisa, Ahmed Gab Allah, R. S. Mahmoud, A. Ibrahim
{"title":"Flexural and Shear Behavior of Rubberized High Strength Reinforced Concrete Beams Strengthened with CFRP","authors":"Ahmed S. Eisa, Ahmed Gab Allah, R. S. Mahmoud, A. Ibrahim","doi":"10.18178/ijscer.10.3.98-105","DOIUrl":"https://doi.org/10.18178/ijscer.10.3.98-105","url":null,"abstract":"This study presents an experimental investigation of the flexural and shear behavior of strengthened high strength concrete (HSC) beams made with rubberized concrete. CFRP has been used in strengthening of all beams in shear and bending. The concrete mixtures have included a 15% of sand replaced with crumbed rubber with a size of 2 mm. Ten (10) simple span concrete beams have been prepared and tested to promote both flexure and shear failures. The tested beams were divided into two groups, where each group was divided into five beams. The first group was tested to fail in flexure and the second group in shear. Beams with crumbed rubber showed very good flexural and shear strength and all the strengthening techniques used were very effective in both flexure and shear. It was found that the most effective flexural and shear failure loads were increased by 51% and 64%, respectively. Overall, the results showed the feasibility of using rubberized beams in structural applications. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133361440","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
Obstruction Level Detection of Sewers Videos Using Convolutional Neural Networks 基于卷积神经网络的下水道视频障碍物水平检测
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.10.4.135-143
Mario A. Gutiérrez- Mondragón, Dario Garcia Gasulla, Sergio Álvarez Napagao, Jaume Brossa- Ordoñez, Rafael Gimenez- Esteban
{"title":"Obstruction Level Detection of Sewers Videos Using Convolutional Neural Networks","authors":"Mario A. Gutiérrez- Mondragón, Dario Garcia Gasulla, Sergio Álvarez Napagao, Jaume Brossa- Ordoñez, Rafael Gimenez- Esteban","doi":"10.18178/ijscer.10.4.135-143","DOIUrl":"https://doi.org/10.18178/ijscer.10.4.135-143","url":null,"abstract":"","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130334515","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: 2
Comparative Study between Two-and Three-Dimensional Analyses of a Deep Excavation 某深基坑二维与三维分析的比较研究
International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.11.4.84-93
Maria Spanea, N. Gerolymos
{"title":"Comparative Study between Two-and Three-Dimensional Analyses of a Deep Excavation","authors":"Maria Spanea, N. Gerolymos","doi":"10.18178/ijscer.11.4.84-93","DOIUrl":"https://doi.org/10.18178/ijscer.11.4.84-93","url":null,"abstract":"—The subsoil stratigraphy, the excavation geometry, and the temporary supporting system are significant factors that affect the design and construction of a deep excavation. This paper presents the findings of a numerical simulation of an anchored pile-supported 36m deep excavation with a length to width ratio of L/B=2.2. The significance of 3D geometry and excavation stages in the out of plane direction on the pile wall’s performance is highlighted. The analysis is carried out with PLAXIS FE code and the effective stress approach. The following critical parameters are used for the results’ comparison: (a) wall lateral displacement, (b) ground settlement, and (c) internal structural forces. The impact of wall structural anisotropy and construction sequence on the soil-structure system's performance is also investigated. The unrealistic 2D boundary conditions considerably overestimate results in terms of both displacements and stresses of the wall, which may lead to an overconservative design.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"109 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940558","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
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