Chief Technology Officer Strata Geosystems India
Presentation Title : Challenges in design and construction of pavements and embankments.
Shahrokh Bagli’s contribution to the civil engineering and geotechnical space is unmatched. In recognition of his vast dedication to the development of geotechnical engineering in India, the Indian Geotechnical Society (Delhi chapter) awarded him with the Lifetime Achievement Award in 2016. Following a 30 year period at Tata Consulting where is last role was of Head of Business development, Mr. Bagli joined Strata Geosystems. At Strata, he has been the innovator. Always keeping the commercial and environmental aspects in mind, Shahrokh Bagli has introduced several new products, applications, and methods using geosynthetics. As a key member of several organizations, he is constantly contributing towards the advancement of geosynthetic technologies.
Shahrokh Bagli (Abstact)
Challenges in design and construction of embankments and pavements
ABSTRACT: This Paper discusses various concerns relating to embankments and pavements in the Indian context. With expansion of existing carriageways into multi-lane expressways, new road routes and development of rural roads to carry motorised vehicles instead of traditional animal-drawn carts, the challenge is compounded by difficult ground conditions, scarce road building materials, high costs of diversions and environment considerations. Considering a significant portion of capital costs being fixed costs, time is of the essence and even a week’s delay can upset financial computations. There are several examples where delays ultimately affect commercial viability of an infrastructure project, with serious consequences on its very completion. This Paper attempts to highlight possible technical issues on pavement design with geosynthetics and how these can be circumvented. It discusses options that could optimise costs and / or reduce the project completion time. It may be noted that solutions, particularly for embankments would require more than one type of geosynthetics for a complete solution. Likewise solutions may require a holistic approach rather than a piecemeal solution, which in totality may not gel with the entire system. Considering scarcity of construction materials the Paper also discusses how traditionally waste and marginal materials can be used.
Rockfall Technical specialist, Alpigeo Consultant company, Belluno, Italy
Presentation Title : Design Approach to Rockfall related problems
Mr. Giorgio Giacchetti
Giorgio Giacchetti a degree as Mining Surveyor and Geologist. He started to work on the rockfall phenomenon in the Italian Alps, where the protection of the inhabited area is fundamental. Now, he is almost 30 years of experience as consultant in the field of the rock mechanics applied to rock slope stability and tunnelling. He designed countless rockfall protection installations using both meshes and barriers. Concerning the barriers he improved the design approach in order to consider all of the design factors. He have gained a practical and theoretical experience on rockfall protection systems also having carried out studies concerning applications of meshes as flexible structural facings both for soil nails and rockfall and debris flow protection systems.
Mr. Giorgio Giacchetti (Abstact)
Design Approach to Rockfall related problems
Marco L. Deana
Rockfall Technical Manager, Officine Maccaferri Spa, 40069 Zola Predosa (BO), Italy
E-mail : email@example.com
ABSTRACT: The present paper deals with rockfall problems related to safety of infrastructures. Nowadays the correct dimensioning of Rockfall Mitigation Systems is possible with the aid of numerical simulation programs, which study the behavior of a falling rock (actually a series of them) and allowsto define the most relevant parameters of the Mitigation System. Unfortunately, the input parameters for the numerical simulations are not always easy to define, moreover the uncertainty linked to some aspects of the problem is very high. For these reasons experience plays a major role in Rockfall Design, without a worldwide defined approach.Starting from some Case Histories the authors has defined how todevelop a design approach, based upon a national standard, which allows the correct dimensioning of a solution, considering the various aspect of the problem and the sources of uncertainty.The goal is to allow the designers’ community to approach this kind of project with some formal tools even in absence of specific experience and to arrive to safe results.
Keywords: Rockfall; Rockfall Barriers; Rockfall Mitigation Systems
President, Indonesian Chapter of International Geotextile Society (IGS)
Presentation Title : Case Histories on the application of Vacuum Preloading and Geosynthetics Reinforced Earth in Indonesia.
Dr. Tjie-Liong GOUW is the president of The Indonesian Chapter of IGS, a senior geotechnical consultant, he has been involved in not less than 250 projects in Indonesia, Singapore and Srilanka. He is also an associate professor teaching at Universitas Katolik Parahyangan in Bandung, Indonesia and also has been given guest lectures in Malaysia, Hong Kong and Sydney. He has written more than 80 papers in journal, seminars and conferences.
Tjie-Liong GOUW (Abstact)
Case Histories on the application of Vacuum Preloading and Geosynthetics Reinforced Soils in Indonesia
Department of Civil Engineering, Universitas Katolik Parahyangan, Bandung, Indonesia
E-mail : firstname.lastname@example.org
ABSTRACT: Geosynthetics technology has been applied in Indonesia as early as 1983 where a high strength geotextile of 200 kN/m was laid to help stabilize the highway built on swampy land toward Jakarta international airport. Since then, geosynthetics have been gaining popularity in solving various geotechnical problems, e.g. slope stabilization, retaining walls, consolidation acceleration, ponds lining, breakwater, shore protection, etc. This paper presents three case histories on the application of prefabricated vertical drain (PVD) with vacuum preloading in accelerating consolidation process of very soft clay and three case histories on the application of geosynthetics reinforced soils in Indonesia.
Presentation Title : Seasonal Variations In Properties Of Expansive Soils Along Railway Corridor In Western India
Mr. Sanjay Gupta
Mr. Sanjay Gupta, Managing Director of Cengrs Geotechnica Pvt. Ltd. has over 46 years experience as a practicing geotechnical engineer. He directs all geotechnical investigation and construction activities of the company.
His expertise includes site investigations, large diameter bored piles, under-reamed piles, high capacity load testing of piles, ground improvement, foundation design under difficult soil conditions including soft ground/ weak soils and under artesian conditions.
He is widely regarded for his experience in geotechnical engineering consultancy and construction. He was awarded the IGS-Dinesh Mohan Award for Excellence in Professional Practice in 2008 and the IGS Delhi Chapter Lifetime Achievement Award in the year 2010-2011.
As member of the Geotechnical Engineering Committee of the Indian Roads Congress and Bureau of Indian Standards, he is actively involved in upgrading practice methods and preparing codes of practice for geotechnical aspects of highways and bridges. He has published several technical papers on field and practical geotechnical engineering.
Sanjay Gupta (Abstact)
Seasonal Variations in Properties of Expansive Soils Along a Railway Corridor in Western India
Sanjay Gupta, Ravi Sundaram, Sorabh Gupta
Cengrs Geotechnica Pvt. Ltd., A-100 Sector 63, Noida, India
E-mail : email@example.com;firstname.lastname@example.org;email@example.com
ABSTRACT: The properties of expansive soils at shallow depth are influenced by moisture variations due to seepage of water into the soils during rains. The paper presents a case study in western India along a railway freight corridor. Testing on samples collected from boreholes drilled in the pre-monsoon and post-monsoon periods indicate substantial variations in moisture content, undrained shear strength and swell pressure to about 3-3.5 m depth. Below this depth, these properties show insignificant change. This confirms that the active zone, the geotechnically unstable zone in expansive soils that undergoes swelling-shrinkage due to moisture variations,extends to about 3.5 m depth.
President, Engineering Risk and Insurance Research Institute of China Civil Engineering Society Tongji University, China
Presentation Title : Smart Sensing on Tunnel Defects by Artificial Intelligence
Prof. Hongwei Huang is a full Professor of Tongji University in Shanghai of China. From 2013, he got the position of Yangtze River Scholars Distinguished Professor in Chinese National level. He got his PhD. in structural engineering from Tongji University in 1993.Hongwei is a member of ISRM, ITA and ISSMGE, former core member of GeosNet, member of risk assessment of Geo-Inistitute of ASCE, President of Engineering risk and insurance research branch in Chinese Society of Civil Engineering. His main research fields are Risk Assessment and Management, and SHM in Tunneling.
Hongwei Huang (Abstact)
Smart Sensing on Tunnel Defects by Artificial Intelligence
ABSTRACT: It is widely accepted that the fast inspection and timely monitoring on structural performance of tunnels are of great importance to the structural and operational safety. However, as the number of constructed tunnels increases in an incredible speed, the conventional inspection and monitoring method can hardly fulfill the requirement due to the intensive labor work and low efficiency of data processing. On the other hand, the recent developing artificial intelligence (AI) based technique has the great advances in the pattern recognition and data analysis. In this paper, an AI-based smart sensing framework is proposed for fast detection, accurate identification and real-time monitoring of structural defects of shield tunnel of Shanghai metro. First, the general defect images for the inner surface of tunnel are captured by the selfdeveloped image acquisition equipment, named as Moving Tunnel Inspection (MTI-200a) system. By using the deep learning (DL) with fully convolutional network (FCN), the hided defects is quickly localized and characterized. Then, a wireless sensing network (WSN) with micro-electronic mechanical system (MEMS) based tilt node is applied for the real-time monitoring of tunnel convergence at the position where the significant defects are located. The evolution of tunnel deformation can be tracked with the WSN system. Thus, the defects can be sensed in a smart way along the lifetime of tunnel operation. The smart sensing framework has been successfully applied into the Shanghai metro tunnels for validation. The defects discussed in this paper include the convergence of tunnel horizontal diameter and structural defects, such as cracks and water leakage. The great superiority of AI-based methods comparing with frequently-used conventional methods should be helpful to the preventive maintenance of operational tunnels.
Managing Director GEOCONSULT India Pvt. Ltd, Gurgaon, India
Presentation Title : Geotechnical Design of Underground Infrastructure - Outlining the Observational Approach
Dr. Florian Krenn graduated in Civil Engineering from the Technical University Graz in 1999. He obtained a Ph.D. in Mining Engineering at the University of Leoben in 2004. In 2004 he joined GEOCONSULT where he worked on different aspects of heavy construction engineering with emphasis on tunnel design in all phases of a project. His project references comprise the preliminary design of the Brenner base tunnel, geotechnical construction supervision of soft ground and hard rock tunnel drives in the Inn valley and at the Koralm Tunnel exploratory drive. Since 2009 he is Managing Director of GEOCONSULT India Pvt. Ltd. The projects Geoconsult India has successfully completed are the oil storage caverns in Vizag and Padur, the NATM implementation at the Jorethang Loop HEP and consultancy services in Delhi Metro Phase 3. Geoconsult is involved in different underground projects in India, namely the Qazigund - Banihal Road tunnel, Metro Lucknow, Metro Mumbai and a number of railway tunnels in the Northeast as well as urban and highway tunnels.
Florian Krenn (Abstact)
Geotechnical Design of Underground Infrastructure - Outlining the Observational Approach
ABSTRACT: Tunnelling for Infrastructure has got a long tradition, and has become more and more important in the last years in India. The topographical features of India –the Himalayas as the best example – and the growth of urban spaces make tunneling an important component in many infrastructure projects., thus putting geotechnics for underground works into a key role. Geotechnics for tunneling needs therefore to be approached in a comprehensive manner, from investigation, ground description and subsequent design to the implementation. The observational approach is in the opinion of the Author the first choice for economical geotechnical works, with different depths of application depending on the project boundary conditions and risk appreciation.
Department of Civil Engineering Indian Institute of Technology Hyderabad, India
Presentation Title : Performance of Fly ash-Geopolymer Stabilized RAP Bases
Dr. Sireesh Saride is currently Associate Professor in the Department of Civil Engineering, Indian Institute of Technology Hyderabad. His expertise and research interests are in the area of pavement geotechnics, geosynthetics and ground improvement. He earned his masters integrated with PhD from Indian Institute of Science in 2006. Prior to joining IIT Hyderabad in 2010, he was a post-doctoral research fellow at the University of Texas at Arlington, during 2006-2010. Dr. Sireesh has published more than 140 referred journal, conference articles and technical reports. He is currently serving as an Associate Editor for the Journal of Ground Improvement (ICE) and Journal of Materials in Civil Engineering, ASCE. He is a member of ASCE, ICE and life member of IGS and IRC.
Sireesh Saride (Abstact)
Performance of Fly ash-Geopolymer Stabilized RAP Bases
ABSTRACT: Cement stabilized bases are becoming popular to improve the structural capacity, to utilize secondary materials as well as to reduce the cost of pavement systems. The potential of a low calcium fly ash (FA) to stabilize reclaimed asphalt pavement (RAP) materials was investigated. The influence of alkali activator (NaOH) on the strength and stiffness characteristics was verified to meet the design criteria proposed by Indian Roads Congress (IRC). The morphology of RAP-FA geopolymer and the resulting pozzolanic products are verified through X-ray diffraction and scanning electron microscopic studies. A significant portion (60%) of virgin aggregate (VA) was replaced by RAP, and the mix was stabilized using alkali-activated low calcium fly ash obtained from Vijayawada thermal power plant. For this purpose, RAP:VA+FA based geopolymer specimens with various alkali activator concentrations were prepared, and those specimens were subjected to a curing temperature of 27oC and curing time of 7 & 28 days. The NaOH concentration was varied from 2 M to 4 M. The strength and stiffness properties of RAP:VA+FA geopolymer were determined using unconfined compressive strength (UCS) tests and resilient modulus (Mr) tests. Results indicate that the optimum dosage of NaOH molar concentration for the fly ash is about 3M to produce the sustainable pavement base material. Based on the laboratory test data, two test sections were built for a distance of 200 m on a state highway (SH 2213) to assess the performance of the proposed mix designs. Laboratory and field results indicate that the low calcium fly ash based geopolymers can be used to stabilize the RAP base material.
Presentation Title : Evaluation of geosynthetic reinforced tracks on clayey subgrade.
DR. J.T. SHAHU
Dr. Shahu graduated in 1986 from Nagpur University and then got his Master and doctor degrees from IIT Kanpur in 1988 and 1994. He was a post-doctoral fellow and later Associate Professor at Institute of Lowland Technology (ILT) in Japan from 1996-99. Dr. Shahu joined IIT Delhi in 2002 as Assistant Professor and became Professor in 2012. He again visited ILT in 2007 as Visiting Professor for five months.
His main research interests are geotechnology for roads and railway tracks, ground improvement and geosynthetic applications. He has more than 35 papers in international journals and 40 papers in conferences. He has also co-edited three volumes. He has guided 50 M.Tech. and 7 Ph.D. theses. He has completed 9 sponsored research projects and more than 60 consultancy projects till date.
Dr. Shahu is a life member of ISLT and IACMAG, and a member of ISSMGE and ISRM. He is life fellow of Indian Geotechnical Society. He is editorial board member of Lowland Technology International and Indian Geotechnical Journal. His home page is http://web.iitd.ac.in/~shahu/
JT Shahu (Abstact)
Evaluation of geosynthetic reinforced tracks on clayey subgrade
Department of Civil Engineering, Indian Institute of Technology New Delhi, New Delhi – 110025
E-mail : firstname.lastname@example.org
Department of Civil Engineering, Indian Institute of Technology (ISM) Dhanbad, – 826004
E-mail : email@example.com
ABSTRACT: In Railroad track, geosynthetic is used for multiple functions, namely, reinforcement, separation, filtration and drainage. In the present study, static and cyclic tests are performed on full panel railway track models laid on compacted soil subgrades. Tests are performed on model tracks with two different thicknesses of subballast layer and laid on subgrade soil, namely, Dhanaury clay. Model tracks are reinforced with geogrid or geotextile or both at suitable interfaces. Track condition after a heavy rainfall was simulated. The models reinforced with geogrid at ballast-subballast interface were found to be more effective in reducing the tie displacements, ballast and subballast strains, and subgrade displacements as compared to the models reinforced with geotextile at subballast subgrade interface for tracks with Dhanaury clay as subgrade. The present study is also carried out by using a commercially available finite element software code, MIDAS/GTS. Laboratory tests (triaxial tests and interface tests) have been conducted to calculate the constitutive parameters of the different track materials and interfaces, which are used in the analyses. Model test results were extended to the field wherein subgrade modulus (Esg), subballast thickness (dsb), shear strength parameters (c'sg and ϕ'sg) of the subgrade soil, stiffness of geogrid and coefficient of permeability of the subgrade soil were considered as track parameters.
Presentation Title : Design and Analyses of CHENAB bridge foundations and Abuttment Slope stabilisation measures: World’s highest elevated Rail bridge.
Dr T G Sitharam
Dr T G Sitharam is a KSIIDC Chair Professor in the area of Energy and Mechanical Sciences IISc and Senior Professor at the Department of Civil Engineering, Indian Institute of Science, Bengaluru. He was former founder Chairman of a Center for Infrastructure, Sustainable Transport and Urban Planning (CiSTUP) at IISc. He is presently the Chairman, AICTE South western zonal committee, Regional office at Bengaluru. His research areas are in Geotechnical engineering. He has involved in design and construction of earth dams and tailing dams in India as a consultant. He has more than 500 publications to his credit in International / national journals and conferences with an H-index of 33 and i-10 index of 83 (3218 citations) with more than 200 International journal publications of repute. He has written ten text books and book volumes. Further, He is an excellent Civil Engineering consultant and has carried out more than 120 consultancy projects in the area of infrastructure, geotechnical engineering and rock engineering in particular. He has guided more than 30 PhD students at IISc and has trained more than 30 Master's students and 30 Post doctoral fellows. He was a visiting professor in Canada, USA, Japan and Germany. He has received many awards to his credit. He is the chief editor of two journals in his area of research.
T.G. Sitharam (Abstact)
Design and Analyses of CHENAB bridge foundations and Abuttment Slope stabilisation measures: World’s highest elevated Rail bridge
Department of Civil Engineering, Indian Institute of Science, Bengaluru – 560012
Afcons Infrastructure Limited, Mumbai-400053
E-mail : firstname.lastname@example.org
Department of Mining Engineering, Indian Institute of Technology (ISM) Dhanabd-826004
E-mail : email@example.com
ABSTRACT: Indian Railways have embarked on the construction of World’s highest railway bridge as a part of Udhampur-Srinagar-Baramulla Rail Link Project, a major infrastructure project in India. The bridge is being constructed across the river Chenab. The bridge consists of a main span of 467m arch bridge on the steep slopes on the banks of the river Chenab. The bridge is about 359m above the high flood level of the Chenab river. The bridge is located in highly seismic area characterized with maximum credible earthquake with a peak horizontal acceleration of 0.36g.Considering the iconic nature of the bridge and highly jointed rock mass, a variety of tests were conducted to assess bearing capacity of the foundations and stability of the slopes. Continuum analyses using Slide and FLAC softwares were carried out. The slopes are also checked for wedge failure and toppling failure considering the joint characteristics. The slope stabilization measures against wedge failure consists of using passive rock bolts and active prestressed rock anchors. The methodology for the design of these rock bolts and prestressed rock anchors for wedge failures is described briefly. The slopes have been successfully stabilized using the methodology discussed in this paper.
Keywords: Cast-in-place pile; Hi-FA grout, Field applicability, Sandy gravel soil
Tandon Consultants Pvt Ltd (TCPL) India
Presentation Title : Bridge foundations in strata with potential of liquefaction.
Prof Tandon, Managing Director of Tandon Consultants Pvt Ltd (TCPL), isan international expert in the field of Structural Engineering. Many of the structures designed by Prof Tandonand TCPL have been widely acclaimed and have received recognition in India as well as internationally. He is President, Indian Society of Wind Engineering (2015-16) and Past President, Indian Association of Structural Engineers (2015-16) and Past President, Indian ConcreteInstitute(2003-2005).Under the AICTE-INAE program he was appointed Distinguished Visiting Professor for IITs@ Kanpur, Roorkee& Gandhinagar (2005-2015). Currently (2017-2019) he has been appointed as Guest Professor at IIT Gandhinagar.From theInstitution of Engineers Tandonreceived Industry Excellence Award (2015),He is Honorary Fellow of Indian Concrete Institute and Chartered Engineer and Fellow of American Society of Civil Engineers.
Prof Tandon has made significant contributions in the development of a culture for innovation in structural engineering both within and outside his organization by sharing his expertise and experience. His special areas of interest also include motivating the next generation to adopt Civil Engineering as their profession and vocation in life.
Prof. Mahesh Tandon (Abstact)
Bridge foundations in strata with potential of liquefaction
Prof. Mahesh Tandon
Managing Director, Tandon Consultants Pvt. Ltd. New Delhi- 110014
E-mail : firstname.lastname@example.org
ABSTRACT: When liquefaction occurs, the soil loses its stiffness and strength and can not only deform but also flow laterally. In-situ testing is relied upon to assess the liquefaction potential of soils due to the difficulties in obtaining and laboratory testing of undisturbed samples. The Standard Penetration Test (SPT) and the Cone Penetration Test (CPT) are the two most frequently used field investigations for determining the characteristics of soils. In this paper SPT values have been used as they remain by far the most popular and economical method of subsurface investigation in India. The methods suitable for design offices in the Indian context have received special attention in this paper which examines the effects of liquefaction on piled bridge foundations.
President, International Society For Rock Mechanics India
Presentation Title : Challenges of Tunnelling through Himalayas – Status, Pitfalls and Way Forward
Dr Manoj Verman
Dr Manoj Verman is a specialist in tunnelling and rock engineering with 35 years of extensive experience with infrastructure projects in India and overseas. With international recognition and proven track record in his core areas of rock engineering and underground structures, he is currently an independent consultant focussing on these areas.
His international positions include Vice President on global Board of ISRM (2011-2015) and President, International Commission on Hard Rock Excavation (2011-2019). On national front, he is currently the President of Indian National Group of ISRM (2014-2020) and has been a Vice President of Indian society of Engineering Geology (2013-2015).
In his extensive career, Dr Verman has served with various organisations including Geodata Engineering as Technical Director, Halcrow as Director of Tunnelling & Geotechnical, and Golder Associates as Vice Chairman of the Global Tunnelling Group.
He graduated in Civil Engineering from Punjab Engineering College, Chandigarh in 1980 and obtained his Masters and Ph.D. in Rock Mechanics from IIT Delhi and University of Roorkee respectively. He has published over 75 papers and is currently writing two books.
Manoj Verman (Abstact)
Challenges of Tunnelling through Himalayas – Status, Pitfalls and Way Forward
President, Indian National Group of International Society for Rock Mechanics (ISRM), President, International Commission on Hard Rock Excavation
E-mail : email@example.com
ABSTRACT: The Himalayas are known to offer the toughest tunnelling media in the world, followed closely by the Andes and the Alps. While the complexity of the Himalayan geology is often perceived as a barrier to tunnelling, the real barriers come from the gaps in application of best practices which continue to create problems across all stages of projects – right from investigations, through design, construction and into operation. Barriers to tunnelling exist both in technical and non-technical domains. As India’s infrastructure development surges ahead and, with a large number of tunneling projects on the anvil, it is crucial that these gaps are identified and lessons are learnt from the best practices and implemented in the country.
Keywords: Tunnelling; Himalayas; Geotechnical Investigations; Rock Engineering