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Full-Text Articles in Entire DC Network
Axial Load Behavior Of A Driven Cast-In-Situ Pile In Sand, Kevin N. Flynn, Bryan A. Mccabe, Derek Egan
Axial Load Behavior Of A Driven Cast-In-Situ Pile In Sand, Kevin N. Flynn, Bryan A. Mccabe, Derek Egan
International Conference on Case Histories in Geotechnical Engineering
Driven cast-in-situ (DCIS) piles are a popular choice amongst piling contractors due to the ability to readily adjust pile lengths to suit the depth of penetration required. Despite their widespread use, there is a dearth of published data on the axial load behavior of temporary-cased DCIS piles, particularly in cohesionless soils. This paper reports the results of a static compression load test on a 340 mm nominal diameter, 5.75 m long DCIS pile in a dense sand deposit in Shotton, Wales. The test pile was instrumented with vibrating-wire strain gauges at various levels to determine the shaft and base resistance …
Bridge Foundation Piles In Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup, Gregory R. Reuter
Bridge Foundation Piles In Varved Glaciolacustrine Deposits Exhibiting Very High Soil Setup, Gregory R. Reuter
International Conference on Case Histories in Geotechnical Engineering
A pile-supported bridge was to be constructed at a site in Vadnais Heights, Minnesota, located north of St. Paul, in an area underlain by a significant deposit of glaciolacustrine sand, silt, and clay, which extended to a depth of about 39 m. For the geotechnical analysis, the conventional soil borings were supplemented by performing seismic piezocone (SCPTu) soundings. At the beginning of bridge construction, test piles were driven which experienced unusually easy driving to the termination depths of 38.4 to 40.2 m. High strain dynamic testing was used during pile installation and during restrike. After only a 2-day waiting period, …
Dynamic Response Of Vertical And Batter Piles, R. M. Subramanian, A. Boominathan
Dynamic Response Of Vertical And Batter Piles, R. M. Subramanian, A. Boominathan
International Conference on Case Histories in Geotechnical Engineering
The lateral forced vibration test was carried out on driven cast in-situ concrete vertical piles of 500 mm diameter in a petrochemical complex site in Paradip, India. The site predominantly consists of silty sand for the top 3 m with shear wave velocity of 200 m/s and it is followed by clayey sand with shear velocity increases from 415 m/s to 460 m/s over pile termination depth of about 17 m . The piles were subjected to a sinusoidal lateral force with magnitude of 0.3 kN to 9.5 kN in the frequency range of 5 to 30 Hz. A 3D …
Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark, Sarah Firouzianbandpey, Benjaminn Nordahl Nielsenl, Lars Vabbersgaard Andersen, Lars Bo Ibsen
Geotechnical Site Assessment By Seismic Piezocone Test In North Of Denmark, Sarah Firouzianbandpey, Benjaminn Nordahl Nielsenl, Lars Vabbersgaard Andersen, Lars Bo Ibsen
International Conference on Case Histories in Geotechnical Engineering
These days cone penetration tests (CPT) have gained more popularity as an alternative to the conventional laboratory tests for subsurface investigation and estimation of soil parameters. Due to increasing interest in soil dynamics in the last decades, there is a development of CPT as a seismic piezocone penetration test (SCPTU) which provides shear wave velocity measurements simultaneously with measurements of tip resistance (qc), sleeve friction (fs) and pore pressure (u). The results can be used for determination of deformation parameters of soil. In this regard there have been proposed different empirical correlations between cone data and …
High Capacity Rock Socketed Piles In Scotland, Uk, Peter Boyd, Baran Ozsoy
High Capacity Rock Socketed Piles In Scotland, Uk, Peter Boyd, Baran Ozsoy
International Conference on Case Histories in Geotechnical Engineering
The New Victoria Hospital in Glasgow, Scotland provides a 30,000m² ‘Ambulatory Care and Diagnostic’ (ACAD) facility. The ground conditions beneath the site comprise a variable thickness of Made Ground overlying Glaciomarine Deposits and Glacial Till which in turn rests on the Carboniferous bedrock. However the solid geology is complex and interrupted by a number of faults. The Carboniferous rocks under the site include a number of coal seams, although it is thought that none of these seams has been worked at this location. Due to the relatively low strength of the glacial soils, it was necessary to support the building …
Performance Of Driven Piles In Gravelly Sands With Cobbles, William S. Man, Yonah R. Halpern
Performance Of Driven Piles In Gravelly Sands With Cobbles, William S. Man, Yonah R. Halpern
International Conference on Case Histories in Geotechnical Engineering
Steel piles are known for their high resistance to driving and handling, as well as their large lateral stiffness. Difficulty of driving depends on the subsurface conditions, pile type, and type of impact hammer used to drive piles. This case history presents observations of pile construction for a bridge widening retrofit in the city of Irwindale. The proposed foundations consisted of twenty seven 14-inch-diameter Caltrans Standard Plan B2-5 Alternative V closed-end pipe piles with quarter-inch thick steel sections. Piles were 35 feet in length and were designed to be driven piles. Subsurface investigations indicated the soils consisted of silty gravels …
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River, E. A. J. George, T. J. Atuboyedia, M. Oju, T. E. George
Punch-Through Foundation Failure Of Oil Drilling Platform In The Deltaic Plain Of The Niger River, E. A. J. George, T. J. Atuboyedia, M. Oju, T. E. George
International Conference on Case Histories in Geotechnical Engineering
The deltaic plains of the Niger River are composed mostly of Pleistocene sediments. On the occurrence of low stands of the sea level due to eustatic changes, the sediments were exposed to temperature fluctuations during the Quaternary period, leading to strata sequence generated in these plains that allowed strong layers of soil to overlie weaker layers of the same age. Most of the onshore explorations for oil and gas in Nigeria take place within these plains of the Niger. A well was to be drilled in search of oil and gas in allocation within these plains. As often done, a …
Rotary Driven Pipe Piles For A 14-Story Building In New York City, Howard A. Perko, Michael Paquette, Marc Gallagher, Andrew Burns
Rotary Driven Pipe Piles For A 14-Story Building In New York City, Howard A. Perko, Michael Paquette, Marc Gallagher, Andrew Burns
International Conference on Case Histories in Geotechnical Engineering
Rotary driven pipe piles are a unique solution for foundation construction in constrained urban areas. These piles consist of a closedend, steel casing with sacrificial drill tip. The casing and drill tip are rotated into the ground using a fixed-mast drill rig. Three hundred sixty two 12.75-inch diameter, rotary driven pipe piles were installed to support a 14-story building in the upper east side of Manhattan. The soils consisted of uncontrolled fill, organic silts, and peat over stiff, saturated, varved silts and clays. A novel mathematical relationship between capacity, installation crowd, and torque was used to develop initial pile installation …
Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace, Sayed Hemeda, Mohamed Gamal, Kyriazis Pitilakis
Seismic Hazard And Geophysical Investigations For Architectural Heritage Preservation In Egypt: The Case Of Habib Sakakini Palace, Sayed Hemeda, Mohamed Gamal, Kyriazis Pitilakis
International Conference on Case Histories in Geotechnical Engineering
The modern architectural heritage of Egypt is rich, and extensively variable. It covers all kinds of monumental structures from palaces, public buildings, residential and industrial buildings, to bridges, springs, gardens and any other modern structure, which falls within the definition of a monument and belongs to the Egyptian cultural heritage. We present herein a comprhensive geophysical survey and seismic hazard assesment for the rehabilitation and strengthening of Habib Sakakini’s Palace in Cairo, which is considered one of the most significant architectural heritage sites in Egypt. The palace located on an ancient water pond at the eastern side of Egyptian gulf …
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia, Alex Sanzeni, Francesco Colleselli, Moira Mino, Alberto Merlini
Behavior Prediction And Monitoring Of A Deep Excavation In The Historic Center Of Brescia, Alex Sanzeni, Francesco Colleselli, Moira Mino, Alberto Merlini
International Conference on Case Histories in Geotechnical Engineering
The construction of a new underground car park in the historic center of Brescia (Northern Italy) required the execution of a 130m long, 23m wide and 15-20m deep excavation which was supported by concrete multi-anchored diaphragm walls. The site is located between two facing ancient walls (15-16th century) that support 3-4 storey buildings in precarious conditions. The soil stratigraphy comprises a superficial layer of made ground over a clayey to sandy soil deposit supporting a perched water table. A comprehensive monitoring system was set up before construction that included inclinometers, precise leveling and automatic structural monitoring by means of a …
Double Case Of Passive Pressure Acting On Wall Rotated About The Top, Petr Koudelka
Double Case Of Passive Pressure Acting On Wall Rotated About The Top, Petr Koudelka
International Conference on Case Histories in Geotechnical Engineering
Basic research of lateral earth pressure based on physical and numerical experiments began in 1998 at the institute of the author and it has continued to the present time. The physical research should prove the behavior of ideally non-cohesive granular mass during three basic types of structure/wall movement towards in active and passive directions. The first research period in 1998-2000 was aimed on active pressure, and in 2001-2002 on the first long-term experiment with passive pressure (E3/0.2). Then new experimental equipment was developed between 2003 and 2009 on a contemporary advanced level. The first long-term experiment with passive pressure E3/0,2 …
Earth Dam Failure By Erosion, A Case History, Scott Newhouse
Earth Dam Failure By Erosion, A Case History, Scott Newhouse
International Conference on Case Histories in Geotechnical Engineering
In January 1998, the Archusa Creek Dam in southeast Mississippi failed by breaching through its emergency spillway. At the time of its failure, the dam had a concrete ogee weir for a principal spillway and a vegetated earth emergency spillway. Fortunately, the dam is a low hazard structure, as there is little development downstream, and consequences of failure were mostly limited to the loss of a state-owned, recreational water park. The dam failed as a result of a 5-year storm event, triggered by intense rainfall of nearly 4.25 in. in just a few hours. Runoff generated by the storm caused …
Failures Of Retaining Wall Structures Due To Earthquake, Mohammadreza Abbasi Garavand, Hamzehlou Bahareh
Failures Of Retaining Wall Structures Due To Earthquake, Mohammadreza Abbasi Garavand, Hamzehlou Bahareh
International Conference on Case Histories in Geotechnical Engineering
This paper describes crack pattern of reinforcement concrete retaining structure due to earthquake. For this reason, the 3-D finite element dynamic analysis of retaining wall structures with consideration of the soil-structure interaction has been used. Purpose of this study is to detect damage zone, due to earthquake in such structures. The analysis data is based on 1995 Kobe and 1994 Northridge earthquake reports, and the results have been verified with some retaining walls were damaged in those earthquakes. To take into account the non-linearity of soil-structure surface, surface to surface contact element is used. One of the most important problems …
Landslide At Railway Project Site In Weak Murree Formation — Case Study, Kamal Dev Ralh, Ansh Deep Ralh
Landslide At Railway Project Site In Weak Murree Formation — Case Study, Kamal Dev Ralh, Ansh Deep Ralh
International Conference on Case Histories in Geotechnical Engineering
Konkan Railway Corporation Ltd. (KRCL) is constructing 71 km Railway Line from Katra to Dharam in Jammu & Kashmir state of India for Indian Railways. This line when constructed up to Quazigund will link the remote areas of Kashmir valley with main network of Indian Railways. This rail link is required for socio-economic development of remote areas. Three executing agencies are handling the entire project. The KRCL stretch is situated in high mountains and deep gorges requiring construction of large number of tunnels and major bridges. Strata along the alignment is fragile and charged with water particularly in tunnels passing …
Mitigation Of Seismic Deformation Of Anchored Quay Wall By Compacting, Pooyan Ghasemi, Abbas Ghalandarzadeh, Ashraf Zekri, Mohammad H. Aminfar
Mitigation Of Seismic Deformation Of Anchored Quay Wall By Compacting, Pooyan Ghasemi, Abbas Ghalandarzadeh, Ashraf Zekri, Mohammad H. Aminfar
International Conference on Case Histories in Geotechnical Engineering
The anchored quay walls or bulkheads are commonly used in coastal areas. Previous studies on the seismic behavior of these quay walls have shown a significant effect of the liquefaction on the performance of the walls. Considerable length of an anchored sheet pile wall in Rajaii port, Iran, has been embedded in liquefiable sand. This study tries to clarify failure mechanism of the wall during earthquake and to identify more effective zone for improvement of the wall stability. Numerical modeling by DIANA software and physical modeling by shake table were presented. Results show that the main reason for extensive deformation …
Experimental Study On Mitigation Of Liquefaction-Induced Lateral Displacement Deep Soil Mixing, Rouzbeh Rasouli, Naoki Takahashi, Ali Derakhshani, Suguru Yamada, Yuji Takaoka, Ikuo Towhata
Experimental Study On Mitigation Of Liquefaction-Induced Lateral Displacement Deep Soil Mixing, Rouzbeh Rasouli, Naoki Takahashi, Ali Derakhshani, Suguru Yamada, Yuji Takaoka, Ikuo Towhata
International Conference on Case Histories in Geotechnical Engineering
After 1990s' earthquakes in Japan, lateral flow of liquefiable slopes became a serious concern of engineers. Espisally Kobe earthquake (1995) in which high subsidence of river levee as a result of liquefied sand lateral flow was observed, become a turning point in geotechnical engineering approach in dealing with this phenomena. From that time many different kinds of mitigation measures for preventing or at least controlling the extent of lateral flow have been proposed. Improving soil by deep mixing columns is one of the common methods of soil improvement that can also be used for controlling the consequences of liquefied sand …
Reconstruction Of A Deteriorating, Tiered, Mse Wall Structure In Connecticut, Matthew E. Meyer, Christian B. Woods, Neritan Axhushi
Reconstruction Of A Deteriorating, Tiered, Mse Wall Structure In Connecticut, Matthew E. Meyer, Christian B. Woods, Neritan Axhushi
International Conference on Case Histories in Geotechnical Engineering
At a retail development site in Southington, Connecticut, a multi-tiered Mechanically Stabilized Earth (MSE) retaining wall system was constructed in the early 1990’s to facilitate development of the site. Specifically, the retaining wall system constructed consisted of a sloped structure with three tiers of MSE wall that was approximately 56-feet tall at its highest point. The MSE walls within the slope were spaced approximately 30 to 40 feet apart horizontally, were between six and nine feet in height, and ranged in length from about 375 feet to 1,325 feet. Overall, grades on the slope ranged from about elevation 225 feet …
Deep Excavation On 3 Sides Of A 21 Story Building: Accounts Of A Successful Deep Excavation Project, S. Mohsen Haeri, Mohammadhasan Sasar, Kioumars Afshari
Deep Excavation On 3 Sides Of A 21 Story Building: Accounts Of A Successful Deep Excavation Project, S. Mohsen Haeri, Mohammadhasan Sasar, Kioumars Afshari
International Conference on Case Histories in Geotechnical Engineering
TOOBA deep excavation project was conducted in a densely developed area in the North West of Tehran, capital of Iran, to provide space for 4 basement levels for multiple buildings around the already functional TOOBA tower. TOOBA tower is located in the northern leg of the excavation boundary in a way that the northern side of the building abuts the excavation edge. Hence, this project involved excavation on 3 sides of the roughly rectangular plan of TOOBA tower to the depth of 16.5 meters below its foundation level. The necessity for constraining the deformations of the tower commended the construction …
Geotechnical Characterization Of The Flood Plain Embankments Of The Serchio River (Tuscany, Italy), Barbara Cosanti, Nunziante Squeglia, Diego C. F. Lo Presti
Geotechnical Characterization Of The Flood Plain Embankments Of The Serchio River (Tuscany, Italy), Barbara Cosanti, Nunziante Squeglia, Diego C. F. Lo Presti
International Conference on Case Histories in Geotechnical Engineering
The flood plain embankments of the Serchio river have been constructed since the XVIII century and construction details are not known. These embankments have experienced failures several times during their life (last in December 2009). After the last event a detailed geotechnical investigation has been carried out. This paper discusses the necessary criteria for a cost – effective campaign considering the total length of the embankments (30 km) and the requested level of detail. In fact levee failure, although it is of limited extension, causes the achievement of the ultimate limit state of the entire embankment system. The campaign, in …
Bloomfield Road Stormwater Storage Tanks Grouting Works, Blackpool, Uk, Mark Edmondson, Pamela Rigby, David Jones, Elizabeth Gallagher, Malcolm Eddleston, David Preece
Bloomfield Road Stormwater Storage Tanks Grouting Works, Blackpool, Uk, Mark Edmondson, Pamela Rigby, David Jones, Elizabeth Gallagher, Malcolm Eddleston, David Preece
International Conference on Case Histories in Geotechnical Engineering
Bloomfield Road Stormwater Storage Tanks, owned by United Utilities PLC, were constructed in 1999 in Blackpool UK to provide 60,000m3 of storage to prevent overflow discharges during the summer bathing water season. The asset comprises two buried tanks (36m diameter and 40m deep) constructed as circular diaphragm walls. Significant groundwater inflows with minor fines content and turbidity up to 48l/s have been reported entering one of the tanks since 2001. From 2008 an increase of fines ingress has been observed indicating potential for progressive failure of the underlying formation strata. The site stratigraphy comprises predominantly glacial superficial soils overlying …
Some Remarks On The Influence Of Deep Excavations On Neighbouring Buildings, Cătălin Căpraru, Anton Chirică
Some Remarks On The Influence Of Deep Excavations On Neighbouring Buildings, Cătălin Căpraru, Anton Chirică
International Conference on Case Histories in Geotechnical Engineering
Increasing density of urban areas leads to building high-rise buildings with deep foundations, enabling their basements for car parking and facilities. Increasing depth of the foundation of these buildings increases also the need for more rigid earth retaining systems. Thus, generally, due to the importance of the neighboring buildings, great care has to be taken in the design process of the retaining structure and the support system of deep excavation in densely built urban areas. The paper summarizes a parametric study on a geotechnical model of a deep excavation, proper to Bucharest subsoil, Romania. The analysis of the excavation was …
Koman Concrete Face Rockfill Dam Updating The Static And Seismic Evaluations, Hamid Fallah, Martin Wieland
Koman Concrete Face Rockfill Dam Updating The Static And Seismic Evaluations, Hamid Fallah, Martin Wieland
International Conference on Case Histories in Geotechnical Engineering
The static and seismic safety evaluation of the 115 m high Koman concrete face rockfill dam, located at the Drin river in Albania has been checked according to the current state-of-practice for the seismic safety evaluation of large embankment dams. For the dynamic analyses with the equivalent linear method a two-dimensional model of the highest dam section was used. The static analysis was carried out by a Mohr-Coulomb elasto-plastic material model of the rockfill. The safety of the dam was checked for the safety evaluation earthquake (SEE) with a peak ground acceleration of the horizontal component of 0.45 g. Spectrum-compatible …
A Case Study On The Use Of Flexible Earth Retaining Structure In Instable Slopes, H. Turan Durgunoglu, Ahmet Sahin, Onder Akcakal
A Case Study On The Use Of Flexible Earth Retaining Structure In Instable Slopes, H. Turan Durgunoglu, Ahmet Sahin, Onder Akcakal
International Conference on Case Histories in Geotechnical Engineering
Recently new highway, motorway and railway projects take place in many developing countries within the aggressive infrastructure investment programme of governments. In rugged topography, engineers face the challenging problems of designing safe and cost effective cuts and fills for these projects especially under seismic loading and marginal stability conditions. Overall stability mechanism and safety of the cut generally controls the design decisions for the relevant section. In addition, because of the construction width limitations, in some mechanically stabilized earth wall projects sufficient width to accommodate the strip lengths of the retaining system cannot be provided. To eliminate all these problems, …
Mississippi River Road Gabion Wall/Slope Stabilization, W. Ken Beck, Lok M. Sharma
Mississippi River Road Gabion Wall/Slope Stabilization, W. Ken Beck, Lok M. Sharma
International Conference on Case Histories in Geotechnical Engineering
Lee County widened Mississippi River Road north of the Keokuk, Iowa in the early 1990s, removing material from the toe of slopes along the alignment. Gabion walls were constructed to provide grade separation. Significant precipitation occurred in the spring of 2010, and two (2) wall sections (about 100 feet each in length) failed. Based on our site exploration and instrumentation monitoring data, the gabion wall sections appeared to fail due to additional lateral load from a soil mass sliding on top of the shale bedrock and a buildup of high ground water levels. To support the additional load of the …
Reconstruction Of Road Embankment Failure Using Reinforced Geogrid: Revisiting The Site After 15 Years, Suhaimi Jamaludin, Kamal Bahrin Jaafar
Reconstruction Of Road Embankment Failure Using Reinforced Geogrid: Revisiting The Site After 15 Years, Suhaimi Jamaludin, Kamal Bahrin Jaafar
International Conference on Case Histories in Geotechnical Engineering
A case history of repair works of road embankment failure at KM39, Route 68, Kuala Lumpur – Bentong Road in the state of Selangor, Malaysia and an observation on the condition of the site after 15 years and some tensile strength testing carried out on buried and exposed geogrid was presented in this paper. Due to heavy rainfall in 1995, about half of the road embankment which was located at the alluvial fan of an upslope stream valley was washout. For the reconstruction of the alignment, the existing half of the alignment was converted into a buffer zone with a …
Technical Analyses And Lessons Of The Embankment Failure At The Ajka Red Mud Reservoir, József Mecsi
Technical Analyses And Lessons Of The Embankment Failure At The Ajka Red Mud Reservoir, József Mecsi
International Conference on Case Histories in Geotechnical Engineering
This presentation aims at providing an informative fact-based description of the complex reasons resulting in dam ruptures. The investigations focus on the tragic damage of red mud reservoir No. 10 in Ajka and restrict itself to the engineering aspects of the damage. The analysis of the direct and indirect reasons for the tragic incident may serve as a lesson to our engineers and specialists as well as provide guidelines and revelations with the intention of improvement while emphasizing the necessity of deeper comprehension. Neither this presentation nor the engineering analyses aimed at the search for scapegoats behind the failures.
Case Study Of Landslides In Kabylia Region, Algeria, Sadaoui Omar, Sadaoui Samir, Bahar Ramdane
Case Study Of Landslides In Kabylia Region, Algeria, Sadaoui Omar, Sadaoui Samir, Bahar Ramdane
International Conference on Case Histories in Geotechnical Engineering
Kabylia is mountainous and coastline region of Algeria. Every year, particularly in the winter, it is affected by landslides displacing an important volume of detritic materials, and causing damages to infrastructures, housing and public facilities. It takes place in geological formations that are particularly favourable to this type of movement, because of the heterogeneity of their facies and the impermeability of some layers. Experience shows that the main cause of the landslides in this region is the combination of several passive and active factors, as geology, morphology, hydrology, climate and anthropic activities. The exceptional rains of winter 2012 triggered a …
Effect Of The Soil Spatial Variability On The Static And Dynamic Stability Analysis Of A Lebanese Slope, Mansour Neaimeh, Rony Azar, Roni Hmaymes, Georges Nasr, Dalia Youssef Abdel Massih, Jacques Harb, Nancy Salloum, Cécile Cornou, Denis Jongmans
Effect Of The Soil Spatial Variability On The Static And Dynamic Stability Analysis Of A Lebanese Slope, Mansour Neaimeh, Rony Azar, Roni Hmaymes, Georges Nasr, Dalia Youssef Abdel Massih, Jacques Harb, Nancy Salloum, Cécile Cornou, Denis Jongmans
International Conference on Case Histories in Geotechnical Engineering
The accidental topography and heterogeneous Lebanese geology in addition to the active seismicity have initiated the static and dynamic stability analysis of Lebanese slopes. In this paper, the stability of a sandy Lebanese slope situated at Mansourieh near Beirut is investigated using deterministic and probabilistic approaches. The characterization of the variability of the slope soil properties is done based on geological investigation, as well as geophysical (Resistivity and Ambient noise) and geotechnical tests performed on this slope. Three dimensional 3D static deterministic analyses is performed to determine the overall safety factor of the slope and to find the location of …
Rainfall-Induced Debris Flows Case History Along Al-Hada Descent Highway West Of Saudi Arabia, Bahaaeldin Sadagah, Abdulrahman Al-Amri, Mohammed S. Aazam, Omar Al-Hoseiny
Rainfall-Induced Debris Flows Case History Along Al-Hada Descent Highway West Of Saudi Arabia, Bahaaeldin Sadagah, Abdulrahman Al-Amri, Mohammed S. Aazam, Omar Al-Hoseiny
International Conference on Case Histories in Geotechnical Engineering
Al-Hada descent lies at the western region of Saudi Arabia at elevation of about 2000m, characterized by sharp cliff. Al-Hada descent road was constructed with an elevation difference of 1500m between the highest and lowest heights along the road. The road alignment is intersected by 8 very steep gullies of almost 60 to 80 degrees. The gullies contain large quantity of mud, old levees and large rock blocks. Al-Hada descent road hit two weeks ago with heavy rainfall last about 2 hours. The rainstorm initiates 11 debris flows on steep gullies, and caused them to travel rapidly down along the …
Stabilizing A Landslide On A Highway Under Traffic: A Case History On Egnatia Motorway In Greece, Eleni Sakoumpenta, Vassilis Houssiadas, Manolis Haralambakis
Stabilizing A Landslide On A Highway Under Traffic: A Case History On Egnatia Motorway In Greece, Eleni Sakoumpenta, Vassilis Houssiadas, Manolis Haralambakis
International Conference on Case Histories in Geotechnical Engineering
In the winter of 2010, a landslide occurred on Egnatia motorway affecting an embankment approximately 300m long and 8–20 m high. The crest of the slide was at a distance of 60m uphill from the highway and the maximum depth of movement was 28 m. The bedrock in the area consists of alternating layers of siltstone and sandstone with local conglomerate intercalations covered by a soil layer of variable thickness (up to 30m) and consistency. The sliding occurred within a zone of plastic red clay just above bedrock exhibiting strength parameters between peak and residual values. A horizontal movement of …