Transactions Hong Kong Institution of Engineers最新文献_第9页

Calculating the number of direct lightning strokes to tall structures using leader progression model and particle swarm optimisation (PSO) algorithm 利用leader级数模型和粒子群优化算法计算高层建筑的直击次数

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1499448

M. Yahyaabadi, F. Aslani

引用次数: 4

Importance of surface drainage management to slope performance 地表排水管理对边坡性能的重要性

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1499449

Ryan W H Lee, Rachel H C Law, D. Lo

引用次数: 1

TQM application by client organisations in Hong Kong 香港客户机构应用全面质量管理

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1499447

A. Lau, Raymond T. Aoieong, S. Tang

引用次数: 0

The HKIE Best Transactions Paper Prize 2018 香港教育学会最佳论文奖2018

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1544643

A. Cheung, C. L. Chan, Ken S. Lau, Stephen J Allen, Xuanjie Wang, Chi Yan, Zicheng Wang, Yadong Zhang, Jin Guo

引用次数: 0

Research on passenger satisfaction of Shanghai Metro system 上海地铁系统乘客满意度研究

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1518163

Xin Xu, Jilan Wu, Xinwei Zhao

引用次数: 1

Design of flexible barriers against sizeable landslides in Hong Kong 香港大型山泥倾泻的弹性屏障设计

Transactions Hong Kong Institution of Engineers Pub Date : 2018-04-03 DOI: 10.1080/1023697X.2018.1462107

E. Sze, R. Koo, Jojo M Y Leung, K. Ho

{"title":"Design of flexible barriers against sizeable landslides in Hong Kong","authors":"E. Sze, R. Koo, Jojo M Y Leung, K. Ho","doi":"10.1080/1023697X.2018.1462107","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1462107","url":null,"abstract":"ABSTRACT A new type of flexible debris-resisting barrier has been designed using the state-of-the-art analytical force approach for mitigation of channelised debris flow hazards in a hillside study area in Hong Kong. Unlike the conventional three-panel rectangular form, these flexible barriers were configured in a valley shape to geometrically fit in the incised drainage lines. The “design event” resulted in a calculated debris impact pressure of up to 400 kPa and over 10,000 kJ in terms of impact energy necessitating a site-specific design. The design involved advanced structural modelling of the highly non-linear behaviour of flexible barriers under debris impact giving rise to a large deformation. This paper presents the design and detailing of these valley-shaped flexible barriers, involving formulation of the design methodology, derivation of the multi-phase impact load model and optimisation of the barrier configuration. To support the design, numerical parametric studies were conducted to examine the barrier’s impact behaviour. Two design initiatives were highlighted for enhancing the design robustness, including a rigorous approach to analyse the effects of the energy-dissipating devices on barrier performance and a robustness check to cater for adverse scenarios that could conceivably happen. Some suggestions on configuring a valley-shaped flexible barrier were given.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1462107","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43390863","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: 9

Advanced numerical analysis of landslide debris mobility and barrier interaction 滑坡岩屑移动和屏障相互作用的高级数值分析

Transactions Hong Kong Institution of Engineers Pub Date : 2018-04-03 DOI: 10.1080/1023697X.2018.1462106

A. Cheung, Jack Yiu, Harris W K Lam, E. Sze

{"title":"Advanced numerical analysis of landslide debris mobility and barrier interaction","authors":"A. Cheung, Jack Yiu, Harris W K Lam, E. Sze","doi":"10.1080/1023697X.2018.1462106","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1462106","url":null,"abstract":"ABSTRACT Mitigation of natural terrain hazards through the use of flexible and rigid barriers has become a common type of geotechnical work in Hong Kong. The current design approach for these structural countermeasures typically involves separate debris mobility modelling and structural analyses of barriers subject to pseudo-static impact loadings. This practical approach, however, could not realistically account for the dynamic debris–barrier interaction. With a view to better capturing the response of barriers under the debris impact, effort has recently been devoted to developing an advanced numerical technique to model debris flows, barrier structural responses and the impact dynamics in a coupled manner. This paper presents some recent advances made in establishing the numerical technique of coupled analysis using a three-dimensional finite-element computer code LS-DYNA. The methodologies of modelling the landslide debris mobility, the large-deformation non-linear behaviour of a flexible barrier under impact and the coupled analysis of debris–barrier interaction are introduced. Back analyses of selected landslide events and debris impact tests of flexible barriers for verification of the computer models are discussed. The coupled analysis enables detailed investigation of the energy balance involved in the impact process. Preliminary results of this energy analysis are also presented.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1462106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45235235","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: 15

Investigation of an unusual landslide at Sai Kung Sai Wan Road, Sai Kung, Hong Kong 香港西贡西贡西湾道意外山泥倾泻调查

Transactions Hong Kong Institution of Engineers Pub Date : 2018-04-03 DOI: 10.1080/1023697X.2018.1461580

D. Lo, Rachel H C Law, Roland C T Wai, A. Ng, S. Williamson, Jason K S Lee, Y. M. Cheng

{"title":"Investigation of an unusual landslide at Sai Kung Sai Wan Road, Sai Kung, Hong Kong","authors":"D. Lo, Rachel H C Law, Roland C T Wai, A. Ng, S. Williamson, Jason K S Lee, Y. M. Cheng","doi":"10.1080/1023697X.2018.1461580","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1461580","url":null,"abstract":"ABSTRACT An intense rainstorm on 21 May 2016 resulted a total of 34 natural terrain landslides in the vicinity of Sai Kung Sai Wan Road in the Sai Kung East Country Park, Hong Kong. One of these landslides was a large-scale failure with a source volume of about 2100 m3. It was almost an order of magnitude larger than all the others. The debris severely eroded a road embankment, undermining the road and resulting in road closure. The nature of the landslide was unusual in that it was a structurally controlled rockslide, with a basal failure surface formed from a persistent, planar sheeting joint within columnar jointed tuff rock with a maximum depth of about 12 m, while the other landslides that occurred in the country park during the same rainstorm involved only shallow failures within the regolith. An investigation of this unusual landslide was undertaken to diagnose the probable mechanism and causes of the failure. As there was concern about further large-scale instability occurring in the adjacent hillside where the sheeting joint was inferred to extend into, the potential for further large-scale instability was assessed as part of the investigation. The key components of the investigation included detailed engineering geological mapping, ground investigation and engineering analyses. This paper presents the findings of the investigation.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1461580","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47650062","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

Go over the mountain and overcome the challenges to power the city 翻越高山，克服挑战，为城市提供动力

Transactions Hong Kong Institution of Engineers Pub Date : 2018-04-03 DOI: 10.1080/1023697X.2018.1462103

A. Ip, Victor K. Shum, Leo K P Fung

引用次数: 0

Recent technical advancement in natural terrain landslide risk mitigation measures in Hong Kong 香港天然地形滑坡风险缓解措施的最新技术进展

Transactions Hong Kong Institution of Engineers Pub Date : 2018-04-03 DOI: 10.1080/1023697X.2018.1462105

J. Kwan, Harris W K Lam, C. Ng, N. Lam, S. Chan, Jack Yiu, J. Cheuk

{"title":"Recent technical advancement in natural terrain landslide risk mitigation measures in Hong Kong","authors":"J. Kwan, Harris W K Lam, C. Ng, N. Lam, S. Chan, Jack Yiu, J. Cheuk","doi":"10.1080/1023697X.2018.1462105","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1462105","url":null,"abstract":"ABSTRACT The Geotechnical Engineering Office (GEO) has been steering technical development work to facilitate enhancement in natural terrain landslide risk management in Hong Kong. Collaborations between GEO, the academia from both local and overseas institutes and geotechnical professions have been initiated in recent years to carry out studies on various aspects, including the development of design methodologies for debris-resisting barriers, the investigation of debris impact mechanics and debris–barrier interaction as well as the improvement of detailing of debris-resisting barriers. The concerted efforts have put Hong Kong in a leading position amongst other countries in the area of combating landslide risk. Many of the studies have brought about significant impacts to the engineering practice in many different regions, and have been made reference with by practitioners worldwide in establishing directions of technical development work on the subject. This paper presents the technical advances in natural terrain landslide risk mitigation measures in Hong Kong. It covers a wide spectrum of innovative studies jointly carried out by the GEO and various experts in respect of advanced numerical modelling, laboratory flume testing, centrifuge modelling and large-scale physical modelling, etc. These studies shed light on the potential of rationalising the present barrier design approaches.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1462105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44812620","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