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Full-Text Articles in Entire DC Network
Spectral Attenuation Characteristics Of Strong Ground Motions In East-Central Iran Using Theoretical Data, Majid Mahood, Hossein Hamzehloo
Spectral Attenuation Characteristics Of Strong Ground Motions In East-Central Iran Using Theoretical Data, Majid Mahood, Hossein Hamzehloo
International Conference on Case Histories in Geotechnical Engineering
Ground-motion prediction equations are an essential element of PSHA. In seismic hazard analysis, attenuation calculations determine how quickly ground motions decrease as the distance from a seismic event increases. The estimation of ground motion for future earthquakes as a function of magnitude and distance is an important problem from earthquake engineering point of view. This article presents spectral equations for the estimation of horizontal strong ground motions caused by shallow crustal earthquakes with magnitude range of Mw 5.0 to 7.4 and distance to the surface projection of the fault less than 100 km for theoretical (simulated) records. The reason …
Modified Value Of Rock Quality Designation Index Rqd In Rock Formation, Ahmed T. M. Farid
Modified Value Of Rock Quality Designation Index Rqd In Rock Formation, Ahmed T. M. Farid
International Conference on Case Histories in Geotechnical Engineering
The rock quality designation, RQD, is a commonly index used in the description of rock mass quality. This RQD, index value is used to predict the engineering properties of the rock strata under study. The RQD index value was introduced for the engineering applications, such as mining and geotechnical engineering. Calculating of RQD index for rock formation is a great part due to its simplicity. However, this also leads to a number of limitations, including among other, a dependency of RQDm value on the borehole orientation and on the selected threshold value for the minimum intact core length. In this …
Influence Of Relative Position Of The Tunnels: A Numerical Study On Twin Tunnels, W. Channabasavaraj, B. Visvanath
Influence Of Relative Position Of The Tunnels: A Numerical Study On Twin Tunnels, W. Channabasavaraj, B. Visvanath
International Conference on Case Histories in Geotechnical Engineering
The development of cities requires the use of underground area for the construction of transportation infrastructure facilities. Construction of twin tunnels or new tunnel close to the existing ones may be done horizontally, vertically or in inclined manner. In the case of horizontal tunnels the distribution of tunnel load will be more in lateral direction. Since cities are densely concentrated with tall structures, laterally distributed loads will induce settlement in the foundation of the structures. For a particular orientation of tunnels, the soil movement and internal forces in the lining will be affected by both the relative position of tunnels …
Geotechnical And Geophysical Evaluation Of The Near Surface Faults And Cracks In Residential Area Underlain By Semi-Arid Shale, Khaled Al-Mutairi, Muawia Dafalla, Fouzan Al Fouzan, Mosleh Al-Shamrani
Geotechnical And Geophysical Evaluation Of The Near Surface Faults And Cracks In Residential Area Underlain By Semi-Arid Shale, Khaled Al-Mutairi, Muawia Dafalla, Fouzan Al Fouzan, Mosleh Al-Shamrani
International Conference on Case Histories in Geotechnical Engineering
This study was carried out following the development of abnormal faults and distresses that extend over more than two kilometers distance in an agricultural rural area to the North of Saudi Arabia. They appeared on the ground surface in the form of extended wide cracks and appeared across buildings, roads and green areas. Severe damages were inflicted to the existing structures and included cracks within the streets, the buildings and boundary walls. Geotechnical works carried out included advancing six boreholes to depths of 35 to 40 meters below grade. The subsurface soil profile was constructed and laboratory tests were carried …
Promotion Of Tunneling Performance In Locally Semi-Hard To Hard Conglomerate Lenses, Case Of Esfahan Historical City Subway Project, Amir Hossein Haghi, Ali Taheri, A. Ehsan Haghi
Promotion Of Tunneling Performance In Locally Semi-Hard To Hard Conglomerate Lenses, Case Of Esfahan Historical City Subway Project, Amir Hossein Haghi, Ali Taheri, A. Ehsan Haghi
International Conference on Case Histories in Geotechnical Engineering
The highly inhomogeneous nature of the river deposits in central Esfahan induced unforeseen problems for tunneling of 2×5 km long of middle section of the Esfahan Subway Project. A noticeable phenomenon in these course grained fluvial (river) deposits is the locally cementation of the soil particles by a calcium carbonate binder and formation of some semi-hard to hard conglomerate lenses. This unique phenomenon is named locally as “Sovord” rock and could be seen just in semi-aired regions as central Iran. Two 6.89 m diameter EPBTBM machines were employed to excavate shallow tunnels in the vicinity of fragile structures of the …
Baltimore Red Line Project: An Overview Of The Cooks Lane Tunnel, Mohsen G. Kashi, Verya Nasri
Baltimore Red Line Project: An Overview Of The Cooks Lane Tunnel, Mohsen G. Kashi, Verya Nasri
International Conference on Case Histories in Geotechnical Engineering
The Maryland Transit Administration’s Baltimore Red Line is a proposed 14.1-mile east-west Light Rail Transit (LRT) line connecting the areas of Woodlawn, Edmondson Village, West Baltimore, downtown Baltimore, Inner Harbour East, Fells Point, Canton and the Johns Hopkins Bayview Medical Centre Campus. Red Line has two tunnel segments namely, the Downtown and the Cooks Lane Tunnels. The Cooks Lane Tunnel (CLT) is the shorter of the two tunnels and will connect the proposed at-grade LRT segment running alongside I-70 with the at-grade LRT segment along Edmondson Avenue. The western CLT portal will be west of the intersection of North Forest …
Numerical Analysis To Examine The Effect Of Landslides On Tunnels, Keiichi Ota, Senro Kuraoka, Toshiya Takeshi
Numerical Analysis To Examine The Effect Of Landslides On Tunnels, Keiichi Ota, Senro Kuraoka, Toshiya Takeshi
International Conference on Case Histories in Geotechnical Engineering
In the vicinity of known landslide zones, tunnel routes should be designed such that the distance between the landslide and the tunnel is sufficient to avoid adverse impact of the landslide on the tunnel. This requires a good understanding of the effects of the landslide on the tunnel. We modeled the ground surrounding the tunnel and the landslide using numerical analysis to evaluate the quantitative effect of the tunnel offset from the landslide on ground stresses and displacement of the ground surface and tunnel crown. We considered the effects under different ground conditions and examined two different cases, when the …
Slope Stability Analysis Of The Working Level And Final Slope In The Surface Mine Of Marls Near 'Hani I Elezit', Idaver Huseini, Januz Mehmeti, Nexhmi Krasniqi, Ahmet Bytyçi, Semijal Hasani-Ziberi
Slope Stability Analysis Of The Working Level And Final Slope In The Surface Mine Of Marls Near 'Hani I Elezit', Idaver Huseini, Januz Mehmeti, Nexhmi Krasniqi, Ahmet Bytyçi, Semijal Hasani-Ziberi
International Conference on Case Histories in Geotechnical Engineering
The future of Kosovo’s economic development relies on the exploration of natural resources, particularly, mining. Great importance has been placed on the exploitation of these resources via the surface utilization of marls. Marls being the prevalent raw material for cement production. Since the beginning of 20thcentury, great achievements have been made in the geo-techniques field, leading to the remarkable progress in the art of mining.This paper through the limit equilibrium solution examines the optimization of parameters for slope stability and presents the findings of the on-site research and lab workings conducted on the open-pit mines of marls near the cement …
Understanding Sinkhole Consequences On Masonry Structures Using Large Small-Scale Physical Modeling, Marwan Al Heib, Huu Luyen Nghiem, Fabrice Emeriault
Understanding Sinkhole Consequences On Masonry Structures Using Large Small-Scale Physical Modeling, Marwan Al Heib, Huu Luyen Nghiem, Fabrice Emeriault
International Conference on Case Histories in Geotechnical Engineering
Subsidence and sinkhole are one of important geological risk due to the collapse of underground cavities either natural cavities or due to the human activities (such as mines). The impact of the subsidence and sinkhole on the existing structures can be sever and dramatic. The prediction of the level of damage depends on the characteristics of the sinkhole and the characteristics of the structures. A large small-scale physical model is developed by the INERIS in order to improve the understanding of the behavior of individual masonry structures subjected to ground subsidence or the collapse of underground cavities. The masonry structure …
Evaluation Of Timber Pile Supported Marine Piers, Ram D. Singh
Evaluation Of Timber Pile Supported Marine Piers, Ram D. Singh
International Conference on Case Histories in Geotechnical Engineering
River piers were constructed during the later part of 19th and early part of 20th centuries to handle increased marine freight traffic in the coastal regions of the United States. The sub-structure of these piers, commonly referred to as “finger-piers”, was usually constructed with a timber deck relieving- platform supported by timber piles. These platforms were used to support either earth-fill and/or concrete arch supports, which in turn provided structural support for the main floor. Most of the piers also had superstructures, usually truss-supported roof with columns, and a railroad siding. Many existing piers on the Delaware River in Philadelphia …
Case Of Ultimate Limit State Design And Eurocode 7-1, Petr Koudelka
Case Of Ultimate Limit State Design And Eurocode 7-1, Petr Koudelka
International Conference on Case Histories in Geotechnical Engineering
The history of the Limit State Design (LSD) in geotechnics is rather long. The first attempt to implement the semi-probabilistic design method in geotechnics was published probably by Brinch Hansen in 1953. This theory was implemented formally in Czech practice in 1966 but it was opposed by most professionals. The theory was contrary to the former successful Safety Factor Design and objections were targeted especially against the Ultimate Limit State Design (ULSD). The development of Eurocode (EC) 7-1 began at the end of 1970 and met with similar opposition. However, the same problem was solved in a different way with …
Geotechnical Forensic Investigation Of Observed Cracks On A Building In Tallahassee, Florida, Rutuparna Joshi, Kwasi Badu-Tweneboah, David Riotte, Rachel Klinger, Aaron Cohen
Geotechnical Forensic Investigation Of Observed Cracks On A Building In Tallahassee, Florida, Rutuparna Joshi, Kwasi Badu-Tweneboah, David Riotte, Rachel Klinger, Aaron Cohen
International Conference on Case Histories in Geotechnical Engineering
In July 2010, two vapor extraction wells were installed about 15 feet from a building at an angle of 50 degrees to the horizontal using rotosonic drilling technique (RDT). In June 2011, a crack approximately 0.5 inch wide on the wall of the building was reported. Several other small cracks were observed on the building following inspection by the authors. The owner of the building expressed concerns that the rotosonic drilling was the cause of the cracks and wanted assurance that subsequent drillings would not exacerbate the problem. Geotechnical forensic investigation was performed to evaluate the potential cause(s) of cracking …
Forensic Geotechnical Distress Evaluation Of Damaged Buildings In Alluvial-Loessic Soils; A Case History, Sarfraz Ali, Abdul Qudoos Khan, Usman Zafar, Talha Haider Shehryar
Forensic Geotechnical Distress Evaluation Of Damaged Buildings In Alluvial-Loessic Soils; A Case History, Sarfraz Ali, Abdul Qudoos Khan, Usman Zafar, Talha Haider Shehryar
International Conference on Case Histories in Geotechnical Engineering
The city of Hyderabad is a part of lower Indus Basin with arid-tropical climatic conditions. Geologically, the soil deposits near Hyderabad are of alluvial-loessic nature underlain by limestone beds alternating with clay layers. Groundwater is present at shallow depth which fluctuates to even shallower depths during monsoon season in the months of July and August. In recent past, large number of buildings built over shallow foundations in the city suffered structural damages of varying scale in the form of cracks and settlements. Some of these buildings were declared dangerous from safety and stability view point and got vacated by local …
Observation Of Stress Distribution On Instrumented Jet Grout Columns, Berrak Teymur, Kaan Doğanışık
Observation Of Stress Distribution On Instrumented Jet Grout Columns, Berrak Teymur, Kaan Doğanışık
International Conference on Case Histories in Geotechnical Engineering
Jet grout columns are used widely in the last decade in Turkey especially in soil improvement projects. This study is intended to understand the behavior and stress distribution of jet grout columns installed in non-cohesive soils and are under vertical loads. Design capacity of jet grout column is examined by loading tests. Stress distribution was determined by strain gauges installed inside the jet grout columns. 35cm in diameter 8m long jet grout columns were constructed in silty sand. As measured by strain gages, the stress along the column extends deeper while load increases. According to the load test results, at …
Preliminary And Working Pile Load Tests In Simsima Limestone, Terrence Carroll, Stuart Hardy, Elliott Ting
Preliminary And Working Pile Load Tests In Simsima Limestone, Terrence Carroll, Stuart Hardy, Elliott Ting
International Conference on Case Histories in Geotechnical Engineering
A load testing program was undertaken to determine the working capacity of drilled shafts in Simsima Limestone, the predominant founding stratum in Doha, Qatar. The drilled shafts ranged from 500 mm to 1,500 mm in diameter and gained capacity from both side and base resistance within the Simsima Limestone. The weathering profile of the Simsima Limestone is complex with the degree of weathering likely to increase or decrease with depth. For the purposes of design, the limestone was characterized into three grades of weathering (A, B, and C) and the pile load testing program focused on testing each of these …
The Evolution Of Deep Foundation Quality Management Techniques In The United States, Bernard H. Hertlein
The Evolution Of Deep Foundation Quality Management Techniques In The United States, Bernard H. Hertlein
International Conference on Case Histories in Geotechnical Engineering
The development and acceptance of quality control and assurance techniques for deep foundations in the United States is a relatively recent phenomenon, and one whose progress can be attributed to a handful of key individuals who first recognized the early promise of these methods, and worked diligently to validate them. The judicious use of nondestructive testing combined with various methods of full-scale load testing has been a major factor in the growth of the drilled shaft and augered, cast-in-place pile industry, by simultaneously allowing engineers to assess and adjust design assumptions, and allowing contractors to improve construction techniques and equipment. …
The 1997 Clark Landfill Failure At Indiana Harbor Works Ltv Steel Company, East Chicago, Indiana, William H. Walton, Clyde N. Baker Jr.
The 1997 Clark Landfill Failure At Indiana Harbor Works Ltv Steel Company, East Chicago, Indiana, William H. Walton, Clyde N. Baker Jr.
International Conference on Case Histories in Geotechnical Engineering
A rapid failure of approximately 900,000 cubic yards of fill and lake bed foundation soil occurred sometime between 7:00 a.m. and 8:00 a.m., on August 6, 1997. The 45-acre landfill was approximately 100 feet higher than Lake Michigan and slid on a layer of weak silty clay located 55 to 60 feet below the water surface of Lake Michigan. The horizontally-translating slide mass nearly blocked the operating intake flume to the No. 2 Intake Pump House for the steel mill cooling water. Figure 1 shows the plan location of the slide mass and scarp location. The slide mass extended approximately …
120 Years Of Caisson Foundations In Chicago, Robert E. Schock, Eric J. Risberg
120 Years Of Caisson Foundations In Chicago, Robert E. Schock, Eric J. Risberg
International Conference on Case Histories in Geotechnical Engineering
Chicago can be called the birthplace of the Skyscraper, and also tlle Drilled Shaft Foundation, both of which came into being late in the 19th century. The story of the Chicago Caisson begins with the presence of a thick deposit of soft clay beneath the City, and continues with the succession of building booms that have characterized the growth of the City over the last 140 years, beginning just after the Great Fire of 187 1. During that first boom, new tall structures were built so rapidly, and amid such profound geotechnical uncertainty, that the process of designing a successful …
Liquefaction-Induced Damage In The2010-2011 Christchurch (New Zealand) Earthquakes, Misko Cubrinovski
Liquefaction-Induced Damage In The2010-2011 Christchurch (New Zealand) Earthquakes, Misko Cubrinovski
International Conference on Case Histories in Geotechnical Engineering
A series of strong local earthquakes hit the city of Christchurch (New Zealand) in the period between September 2010 and December 2011. The earthquakes produced strong ground motions, and were very damaging. The magnitude 6.2 22 February 2011 earthquake was particularly devastating causing heavy damage to the city and 185 fatalities. The earthquake caused widespread and severe liquefaction over approximately one third of the city area which arguably was the most severe and extensive liquefaction in native soils on record. This paper presents an overview of the liquefaction-induced damage to the land, buildings and infrastructure caused by the 2010-2011 earthquakes.
Earthquake Geotechnical Engineering Aspects Of The 2012 Emilia-Romagna Earthquake (Italy), Vincenzo Fioravante, Daniela Giretti, Glenda Abate, Stefano Aversa, Daniela Boldini, Piera Paola Capilleri, Antonio Cavallaro, Deepak Chamlagain, Teresa Crespellani, Francesca Dezi, Johann Facciorusso, Alessandro Ghinelli, Salvatore Grasso, Giuseppe Lanzo, Claudia Madiai, Maria Rosella Maugeri, Michele Maugeri, Alessandro Pagliaroli, Carlo Rainieri, Giuseppe Tropeano, Filippo Santucci De Magistris, Stefania Sica, Francesco Silvestri, Giovanni Vannucchi
Earthquake Geotechnical Engineering Aspects Of The 2012 Emilia-Romagna Earthquake (Italy), Vincenzo Fioravante, Daniela Giretti, Glenda Abate, Stefano Aversa, Daniela Boldini, Piera Paola Capilleri, Antonio Cavallaro, Deepak Chamlagain, Teresa Crespellani, Francesca Dezi, Johann Facciorusso, Alessandro Ghinelli, Salvatore Grasso, Giuseppe Lanzo, Claudia Madiai, Maria Rosella Maugeri, Michele Maugeri, Alessandro Pagliaroli, Carlo Rainieri, Giuseppe Tropeano, Filippo Santucci De Magistris, Stefania Sica, Francesco Silvestri, Giovanni Vannucchi
International Conference on Case Histories in Geotechnical Engineering
On May 20, 2012 an earthquake of magnitude ML=5.9 struck the Emilia Romagna Region of Italy and a little portion of Lombardia Region. Successive earthquakes occurred on May 29, 2012 with ML=5.8 and ML=5.3. The earthquakes caused 27 deaths, of which 13 on industrial buildings. The damage was considerable. 12,000 buildings were severely damaged; big damages occurred also to monuments and cultural heritage of Italy, causing the collapse of 147 campaniles. The damage is estimated in about 5-6 billions of euro. To the damage caused to people and buildings, must be summed the indirect damage due to loss of industrial …
Dynamic Response Of Piles ─ Case Studies In India, Boominathan Adimoolam, Krishna Kumar, Askar Zhussupbekov
Dynamic Response Of Piles ─ Case Studies In India, Boominathan Adimoolam, Krishna Kumar, Askar Zhussupbekov
International Conference on Case Histories in Geotechnical Engineering
Dynamic behavior of piles is strongly affected by the variation in the soil stiffness with depth and the interaction between the soil and the pile. The dynamic characteristics of the piles can be determined by using simple lumped mass models to complex finite element modeling. There is a need for experimental research, in particular large-scale field tests, to validate existing linear/nonlinear models, which are used to predict the dynamic stiffness and damping of the soil-pile system. The determination of dynamic characteristics of soil-pile system by full-scale lateral dynamic pile load testing is an important aspect in the design of pile …
Machine Foundation Design: Experimental And Analytical Soil Structure Interaction, M. Hesham El Naggar
Machine Foundation Design: Experimental And Analytical Soil Structure Interaction, M. Hesham El Naggar
International Conference on Case Histories in Geotechnical Engineering
A comprehensive dynamic testing program has been undertaken to establish the dynamic characteristics of existing fan foundations in order to evaluate their suitability to support new variable speed fans. The dynamic testing program encompassed two sets of tests: pull tests and steady-state vibration test. In addition, dynamic soil-structure interaction analyses were performed to evaluate the response of the foundation to the dynamic operating loads of the new fans.
Design Of A-Walls For Stabilization Of Slopes And Embankments In Soft Soils, Jesús E. Gómez, Carlos Englert, Helen D. Robinson
Design Of A-Walls For Stabilization Of Slopes And Embankments In Soft Soils, Jesús E. Gómez, Carlos Englert, Helen D. Robinson
International Conference on Case Histories in Geotechnical Engineering
A-Wall systems are a combination of deep foundations and, in some cases, tiebacks used to provide lateral support to an unstable ground mass. Determination of the lateral and vertical forces acting on an A-Wall system can be a complex endeavor. As the unstable soil mass tends to move past and through the A-Wall system, forces are generated between the A-Wall elements and the soil. These forces provide support to the ground mass. If the A-Wall is correctly designed, the forces will increase as the soil moves until a maximum is attained at which ground movement ceases and the system reaches …
The Design And Construction Of A Fast Track 16 Hectare, 18 M Deep Basement In Soft Clay In Singapore, J. W. Pappin
The Design And Construction Of A Fast Track 16 Hectare, 18 M Deep Basement In Soft Clay In Singapore, J. W. Pappin
International Conference on Case Histories in Geotechnical Engineering
Singapore’s newest integrated resort, Marina Bay Sands, was completed in record time and has garnered numerous engineering awards. The development sits on recent sand reclamation, which in turn rests on deep soft marine clay deposits. With an average excavation depth of around 18 meters, the 16 hectare (39 acre) waterfront development involved some of the largest marine clay excavation in Singapore. About 2.8 million cubic meters of fill and marine clay were excavated from the site equating to about 800 trucks a day for two years. To overcome the challenges of the bulk excavation and minimize shoring in difficult soil …
Shallow Foundations For Seismic Loads: Design Considerations, Vijay K. Puri, Shamsher Prakash
Shallow Foundations For Seismic Loads: Design Considerations, Vijay K. Puri, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
The seismic design of foundations for structures depends on dynamic bearing capacity, dynamic settlements and liquefaction susceptibility of soil. The dynamic bearing capacity problem has been attracting the attention of researchers during the last about fifty years. Till today (2013), there is no accepted dynamic bearing capacity theory. Most analysis for design of shallow foundations under seismic loads are based on the assumption that the failure zones in soil occur along a static failure surface. This is the pseudo-static approach. An attempt has been made in this paper to summarize the currently available information on design of shallow foundations under …
Professor Ralph B. Peck, Our Beloved Professor And Mentor, Shamsher Prakash
Professor Ralph B. Peck, Our Beloved Professor And Mentor, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
Perhaps more than any other individual, Dr. Ralph B. Peck has served as a guide and leader in the maturing of geotechnical engineering as it has grown in the past 50 years (2013). He has led by example, by the logic of his arguments, clearly transmitting his judgment to student and practitioner alike. He has spoken and written consistently and eloquently on the application of art and science of the practice of subsurface engineering.
Ralph B. Peck – The One-Page Summary, Nancy Peck Young
Ralph B. Peck – The One-Page Summary, Nancy Peck Young
International Conference on Case Histories in Geotechnical Engineering
Ralph B. Peck’s last big project was the Rion-Antirion Bridge in Greece. It was one of his many long projects and was completed in 2004. It received ASCE’s OPAL (Outstanding Projects and Leaders) Outstanding Civil Engineering Achievement Award for 2005. Dad, my husband Allen and I went to see it upon its completion, one of Dad’s last really big trips. Shortly after the end of the project Dad began to receive calls asking him to work on another large venture. Dad politely answered that he was retired, but the gentlemen persisted in calling him, hoping to get him to accept …
Field Instrumentation — The Link Between Theory And Practice In Geotechnical Engineering, E. Dibiagio
Field Instrumentation — The Link Between Theory And Practice In Geotechnical Engineering, E. Dibiagio
International Conference on Case Histories in Geotechnical Engineering
Geotechnical engineers work in two worlds: a theoretical world where ideas and events can be represented by numbers and calculated to as many decimal points as one desires, and a practical world where observations and events can only be described in general qualitative terms. Numerical data, the end product of measurement, provides a quantitative link between the two worlds of theory and practice. Professor Ralph B. Peck, the father of the Observational method in geotechnical engineering, recognized early in his professional career the importance of field instrumentation and performance monitoring in geotechnical engineering, and he did a lot to promote …
Inconclusive Case Histories In Earthquake Geotechnics From Christchurch, George Gazetas
Inconclusive Case Histories In Earthquake Geotechnics From Christchurch, George Gazetas
International Conference on Case Histories in Geotechnical Engineering
It is argued that there is still a need for further exploratory research to unravel the ultimate causes of unresolved case histories (especially those involving failures) in geotechnical earthquake engineering. Three specific examples motivated from the records of the four major seismic episodes that shook the city of Christchurch, New Zealand, in 2010 and 2011 are presented in detail. Peculiarities in these records call for an investigation of a number of plausible seismological and geotechnical contributing factors including source mechanics, forward-rupture directivity, 1Dsoil amplification, soil liquefaction, 2D basin amplification, and topographic aggravation.
Long-Term Effects Of Earthquake-Induced Slope Failures, Ikuo Towhata
Long-Term Effects Of Earthquake-Induced Slope Failures, Ikuo Towhata
International Conference on Case Histories in Geotechnical Engineering
The earthquake-induced slope failures are now attracting significant concerns among experts of landslides. The reason for this is the complicated causative mechanisms as well as its impact on communities. The present paper states moreover that the onset of seismic slope failure is not only the consequence of a natural disaster but also the beginning of a long-term disaster in which the compound effects of the preceding earthquakes and the following heavy rain falls play significant roles. After addressing cases of this kind of natural disaster together with their classifications, study is made of the material properties of rocks subjected to …