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Proceedings of the Institution of Civil Engineers-Forensic Engineering最新文献

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Understanding Liquefaction Flow of Gentle Slopes Containing Non-Plastic Fines 了解含非塑性细粒缓坡的液化流动
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-16 DOI: 10.1680/jfoen.21.00019
T. Kokusho, H. Hazarika, T. Ishizawa, S. Ishibashi, Katsuya Ogo
{"title":"Understanding Liquefaction Flow of Gentle Slopes Containing Non-Plastic Fines","authors":"T. Kokusho, H. Hazarika, T. Ishizawa, S. Ishibashi, Katsuya Ogo","doi":"10.1680/jfoen.21.00019","DOIUrl":"https://doi.org/10.1680/jfoen.21.00019","url":null,"abstract":"In two recent earthquakes in Hokkaido, Japan, liquefied sand unusually flowed underground in very gentle man-made fill slopes, creating large ground surface depressions. In both cases, a significant amount of non-plastic fines was present in the loose fine sands. When tested in undrained triaxial tests, these sands were found far more contractive and easier to flow than sand of the same density without fines. This strongly suggested that the high fines content was the major cause of the strange flow failures because it made the sand flowable on the contractive side of the steady state line. Another series of cyclic torsional simple shear tests on contractive sands with fines under initial shear stress indicated that the flow failure can initiate even in a gentle slope. This is when the effective stress path comes across a straight yield line drawn from the origin on τ−σ c ’ diagram uniquely defined irrespective of stress paths. A scenario to replicate the unusual flow failures was developed based on the observations.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"41 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90498135","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
Estimation of land subsidence hazard using interferometry of satellite radar images 利用卫星雷达图像干涉测量法估算地面沉降危害
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-16 DOI: 10.1680/jfoen.21.00013
M. Mohammadhasani, Behnaz Sheykh Shariati Kermani, Mohammed Jameel, S. Hakim
{"title":"Estimation of land subsidence hazard using interferometry of satellite radar images","authors":"M. Mohammadhasani, Behnaz Sheykh Shariati Kermani, Mohammed Jameel, S. Hakim","doi":"10.1680/jfoen.21.00013","DOIUrl":"https://doi.org/10.1680/jfoen.21.00013","url":null,"abstract":"Increased exploitation of underground resources compared is one of the main reasons for subsidence. Subsidence causes infrastructure damage and ultimately leads to increased risk to society and the economy. In some areas of Iran recently, buildings, runways, bridges, tunnels, streets, railways and roads have been severely damaged. In this study, the amount of land subsidence was analysed in the western region of Kerman city using interferometry of radar images of Sentinel-1 satellite data from 2014 to 2020 in Sentinel’s Application Platform software. Results show that the subsidence rate in the area changed between 3.3 cm to 13.2 cm, confirms a significant increase. Field studies indicate that increased utilisation of groundwater resources, compaction due to ground drainage and imposition of heavy loads can all cause subsidence, which in turn rate leads to huge damage to infrastructure.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"88 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76409527","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
Investigating the possible structural damage scenarios of Niavaran Cultural / Historic Complex 调查Niavaran文化/历史建筑群可能的结构破坏情况
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-16 DOI: 10.1680/jfoen.21.00023
M. Mohammadhasani, A. Beitollahi, Mohammed Jameel, Mahdi Bameri
{"title":"Investigating the possible structural damage scenarios of Niavaran Cultural / Historic Complex","authors":"M. Mohammadhasani, A. Beitollahi, Mohammed Jameel, Mahdi Bameri","doi":"10.1680/jfoen.21.00023","DOIUrl":"https://doi.org/10.1680/jfoen.21.00023","url":null,"abstract":"Niavaran Complex features a mix of architectural styles with the elements from modernism and traditional Iranian architecture and is situated in the northern part of Tehran. The Sahebqaraniyeh Heritage Palace from the time of Naser al-Din Shah of the Qajar dynasty is located in this complex (1846-1896). Based on the initial investigation done by Iran’s Cultural Heritage Handicrafts and Tourism Organization (ICHHTO), significant damages and cracking were observed in structural elements of the palace (walls and roofs). To this end, since early 2014, the monument is closed to the public and in-depth assessment has been carried out. The study includes seismicity of the Niavaran fault, soil liquefaction, landslides, land subsidence, and historical aspects, such as the removal of stabilizing walls about half a century ago and the reduction in underground water level. The detailed field investigation and experimental testing were performed by the Building and Housing Research Center (BHRC) of Iran. One of the main investigations has been the influence of deep excavations downstream in the south part of the palace. The outcome of structural, geotechnical, geophysical, and other related investigations indicated that the Niavaran Cultural/Historic Complex has been damaged significantly in the last decades and is in urgent need of retrofitting/strengthening.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"76 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91227312","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
Correlating groundwater level and shear strength: Kotkai Pakistan landslide as case study 地下水位与抗剪强度的关系:以巴基斯坦Kotkai滑坡为例
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-01 DOI: 10.1680/jfoen.21.00035
Muhammad Israr Khan, Shuhong Wang
{"title":"Correlating groundwater level and shear strength: Kotkai Pakistan landslide as case study","authors":"Muhammad Israr Khan, Shuhong Wang","doi":"10.1680/jfoen.21.00035","DOIUrl":"https://doi.org/10.1680/jfoen.21.00035","url":null,"abstract":"Earth-fill dam failure and landsliding during heavy rainfall and flooding is a common problem observed all over the world. This paper examines and discusses the causes of landsliding due to rainfall and flooding. Climatic rainfall data are interconnected with rainfall precipitation and its effect on the increase in pore water pressure inside soil slopes. Various soil slopes with different geometries and material properties are analysed, and the variation in pore water pressure and the slope factors of safety (FSs) are calculated. Correlations between the groundwater level (GWL) and slope FS are developed in both seismic and non-seismic situations. Correlations between shear strength (τ), shear stress (σ) and FS are also developed. The Kotkai landslide in Pakistan is considered a case study for cross-checking the correctness of the developed correlations. These correlations can be applied to design a safe soil slope in intense flood and rainfall areas.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"44 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89204537","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
Computation of the repairability index of short buildings with rocking connections 带有摇摆连接的矮构筑物可修性指标的计算
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-01 DOI: 10.1680/jfoen.21.00007
Mohammad Bavandi, A. S. Moghadam, M. Mansoori, A. Aziminejad
{"title":"Computation of the repairability index of short buildings with rocking connections","authors":"Mohammad Bavandi, A. S. Moghadam, M. Mansoori, A. Aziminejad","doi":"10.1680/jfoen.21.00007","DOIUrl":"https://doi.org/10.1680/jfoen.21.00007","url":null,"abstract":"Recently developed steel self-centring moment-resisting frames have been analytically and experimentally validated as having the potential to eliminate structural damage under a design basis earthquake and restore their original vertical position following a major earthquake. In this study, the repairability index of post-tensioned self-centring frame for near-field earthquake has been developed. According to the six models of the studied building, a building that can be repaired, the maximum rotation in its connection after the earthquake does not exceed the rotation of the immediate occupancy performance. Based on this, the output data of incremental dynamic analysis analyses were drawn according to the connection of relative rotation and spectral acceleration. According to the predicted performance levels for each acceleration level, the value of the connection opening is divided by the opening of the design-basis earthquake level. The resulting curve shows the repairability index according to spectral acceleration, which if less than one, the repairability target is achieved. To evaluate the damage, the angle failure probability of post-tensioned self-centring frame for near-field earthquake has been developed. This index equation is determined according to the fragility curve and the intensity of damage in each building.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"87 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81143804","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
Analysis of workers’ fall accidents due to formwork operations 模板作业工人坠楼事故分析
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2022-02-01 DOI: 10.1680/jfoen.21.00006
V. Chellappa, U. Salve
{"title":"Analysis of workers’ fall accidents due to formwork operations","authors":"V. Chellappa, U. Salve","doi":"10.1680/jfoen.21.00006","DOIUrl":"https://doi.org/10.1680/jfoen.21.00006","url":null,"abstract":"In the construction industry, fall accidents are a critical form of accident. This research examines fall accidents in formwork operations that occurred between 1995 and 2015. This study examines the different dimensions of fall incidents, such as the level of severity of formwork activities, fall height and causes of falls using the 205 construction industry accidents reported in the Occupational Safety and Health Administration (OSHA) database, a regulatory agency in the USA. The findings revealed that most fall incidents occur at the height of less than 9.1 m (30 ft), mostly due to unprotected or unguarded edges or floor covering. Furthermore, erection and stripping activities were found to have severe risks to carpenters and moreso to the general workers who tend to have more chances of meeting such accidents; additionally, human error can also be observed. These results are intended to alert safety authorities of the need to examine the existing state of fall incidents and formulate strategies to minimise them in the future. Since OSHA does not provide in-depth information for each incident, it was impossible to ascertain the exact situation and formwork type in use at the event.","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"30 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90361233","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
Rectification of Ground Water Leakage During Metro Tunnel Operation 地铁隧道运行中地下水渗漏的治理
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2021-09-30 DOI: 10.1680/jfoen.21.00017
Wen-Jen Chang, C. H. Chan, H. M. Shang
{"title":"Rectification of Ground Water Leakage During Metro Tunnel Operation","authors":"Wen-Jen Chang, C. H. Chan, H. M. Shang","doi":"10.1680/jfoen.21.00017","DOIUrl":"https://doi.org/10.1680/jfoen.21.00017","url":null,"abstract":"It has been more than 20 years since the Metro Danshui Line of Taipei City was put into commercial operation and, the tunnels and underground metro stations experience structural aging along with p...","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"114 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77575760","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
Failure analysis of a landslide along the Mangla reservoir rim near Khaliqabad, Pakistan 巴基斯坦Khaliqabad附近Mangla水库边缘滑坡破坏分析
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2020-11-01 DOI: 10.1680/jfoen.20.00011
Fatima Mehmood, K. Farooq
{"title":"Failure analysis of a landslide along the Mangla reservoir rim near Khaliqabad, Pakistan","authors":"Fatima Mehmood, K. Farooq","doi":"10.1680/jfoen.20.00011","DOIUrl":"https://doi.org/10.1680/jfoen.20.00011","url":null,"abstract":"","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"8 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73088219","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: 3
Briefing: Temporary Works Forum: how history and narrative shaped a major safety initiative 简报:临时工程论坛:历史和叙述如何塑造了一个主要的安全倡议
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2020-06-17 DOI: 10.1680/JFOEN.20.00001
Bill Hewlett
{"title":"Briefing: Temporary Works Forum: how history and narrative shaped a major safety initiative","authors":"Bill Hewlett","doi":"10.1680/JFOEN.20.00001","DOIUrl":"https://doi.org/10.1680/JFOEN.20.00001","url":null,"abstract":"The Temporary Works Forum was founded to give a place for professionals to come together and share their experience and learning about temporary works. 2019 marked its 10th anniversary. In this art...","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"28 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2020-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72918040","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
Failure analysis of earthen, masonry and concrete buildings during the 2017 Tripura earthquake 2017年特里普拉邦地震中土、砖石和混凝土建筑的破坏分析
IF 0.8
Proceedings of the Institution of Civil Engineers-Forensic Engineering Pub Date : 2020-06-17 DOI: 10.1680/jfoen.19.00017
D. Tripura, Sangketa Sangma
{"title":"Failure analysis of earthen, masonry and concrete buildings during the 2017 Tripura earthquake","authors":"D. Tripura, Sangketa Sangma","doi":"10.1680/jfoen.19.00017","DOIUrl":"https://doi.org/10.1680/jfoen.19.00017","url":null,"abstract":"This paper reports on an evaluation of failures of non-engineered earthen buildings, timber-framed buildings with bamboo matting, unreinforced load-bearing masonry buildings and framed reinforced-c...","PeriodicalId":42902,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Forensic Engineering","volume":"175 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2020-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76464270","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: 3
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