Damage On A Main Gas Pipeline Due To Landslide Of Soils Derived From Volcanic Ashes In Colombia,
2013
C.I.C. Consultores S.A., Colombia
Damage On A Main Gas Pipeline Due To Landslide Of Soils Derived From Volcanic Ashes In Colombia, Gilberto Ch. Rodriguez, Julián V. Rodriguez, Natalia A. Quintero, Jorge E. Villamarín
International Conference on Case Histories in Geotechnical Engineering
In December 2011 a great proportion slope failed affecting the main gas pipeline (20” diameter) that supplies Colombia’s southwest area. The landslide involved materials formed by soils derived from volcanic ashes and residual soils, typical in Colombia’s central zone, which acquired great energy flowing in an avalanche through the natural watercourse. The avalanche generated soil erosion over the torrent banks, generating the watercourse deepening and the deterioration of adjacent slopes over which the pipeline runs. There were identified as landslides triggering aspects the atypical raining period due to “La Niña” climatic phenomenon and the soils removal at the slope base …
Double Case Of Passive Pressure Acting On Wall Rotated About The Top,
2013
Institute of Theoretical and Applied Mechanics, Czech Republic
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,
2013
Bechtel Power Corporation, Frederick, MD
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 …
Evaluation Of The Failure Probability Of Slopes In Residual Soil From The Aburrá Valley, Medellín Colombia,
2013
Universidad Nacional de Colombia, Colombia
Evaluation Of The Failure Probability Of Slopes In Residual Soil From The Aburrá Valley, Medellín Colombia, Juan Pablo Villada Rodas, Manuel Roberto Villarraga
International Conference on Case Histories in Geotechnical Engineering
In recent years the evaluation of failure probability on slope stability analyses has become important because it has been presented as a representative method helping to complement the factor of safety. As part of this paper, it is proposed the evaluation of the failure probability in cut slopes on residual soils from the Aburrá valley. Statistical analyses were performed on the most important variables, considering continuous statistical distributions. Sensitivity analyses were performed to quantify their influence in the stability. As a result, some abacuses are developed in which the height and the slope angle are related to the failure probability …
Exploration, Deconstruction, And Repair Of A Distressed Mse Retaining Wall In Saint Paul, Minnesota,
2013
American Engineering Testing, Inc., St. Paul, MN
Exploration, Deconstruction, And Repair Of A Distressed Mse Retaining Wall In Saint Paul, Minnesota, Joseph G. Bentler
International Conference on Case Histories in Geotechnical Engineering
A 225-ft long, 11-ft high MSE retaining wall was constructed in fall 2008 around the lowest corner of a parking lot at a community college. The wall provided grade separation between the higher parking lot and the green areas below. No geotechnical exploration was performed for the wall, although one had been performed for building additions elsewhere on campus, and density testing was performed periodically during MSE wall construction. The following spring, pavement had subsided up to a foot near two catch basins located several feet behind the retaining wall facing. Cracks in the pavement opened adjacent to the catch …
Failure Of Embankment On Soil-Cement Columns For Thi Vai Port, Vietnam,
2013
Thu Dau Mot University Binh Duong, Vietnam
Failure Of Embankment On Soil-Cement Columns For Thi Vai Port, Vietnam, Nguyen Minh Hai, Bengt H. Fellenius
International Conference on Case Histories in Geotechnical Engineering
The Thi Vai Container Port is constructed on reclaimed ground along the Thi Vai River in the Mekong delta approximately 90 km southeast of Ho Chi Minh City, Vietnam. The soil profile consists of an about 15 to 23 m thick deposit of soft, normally consolidated, highly compressible clay deposited on dense to compact sand. A soil improvement scheme was instigated aiming to reduce long-term settlement after construction of the facilities and improve the stability of the river bank. The scheme combined wick drains and, along the river bank, soil cement columns and toe revetments. The wick drains were installed …
Failures Of Retaining Wall Structures Due To Earthquake,
2013
University of Science and Culture, Iran
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 …
Geotechnical Issues In Structural Stabilization Of Historical Monument — Clock Tower,
2013
Institute of Earthquake Engineering and Engineering Seismology-Skopje, Macedonia
Geotechnical Issues In Structural Stabilization Of Historical Monument — Clock Tower, Vlatko Sesov, Julijana Cvetanovska, Kemal Edip
International Conference on Case Histories in Geotechnical Engineering
Being located in the central Balkan region, the territory of the Republic of Macedonia has a significant historical heritage. The clock tower in city of Prilep, central Macedonia, dates back to the 19th century. With its total height of almost 30 m, it is one of the most remarkable monuments. During its serviceability period, the clock tower has suffered some moderate inclination. The presented study has been focused on geotechnical issues as part of a structural consolidation project for this important historical structure. In the last decade, in the period between 1998 – 2009, an inclination of 39mm was observed …
Landslide At Railway Project Site In Weak Murree Formation — Case Study,
2013
Indian Railway Service of Engineers (IRSE), India
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 …
Landslide Of Tunnel Face By Slip Circle Formation —Case Study,
2013
Indian Railway Service of Engineers (IRSE), India
Landslide Of Tunnel Face By Slip Circle Formation —Case Study, Kamal Dev Ralh, Ansh Deep Ralh
International Conference on Case Histories in Geotechnical Engineering
Konkan Railway Corporation Ltd. (KRCL) has been assigned construction of 71 km Railway Line from Katra to Dharam in Jammu & Kashmir state of India. This line when constructed up to Quazigund will link the Kashmir valley with main Indian Railways network. Indian Railway Construction Co. (IRCON) is assigned the section from Dharam to Quazigund. Railway Line in the valley beyond Quazigund is in operation. The KRCL stretch is situated in high mountains and deep gorges requiring construction of large number of tunnels and major bridges. The strata in most of the tunnels is fragile and charged with water particularly …
Mitigation Of Seismic Deformation Of Anchored Quay Wall By Compacting,
2013
University of Tehran, Iran
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 …
Restoration Of The Military Club Building In Sofia, By Micro Pile Injections,
2013
University of Transport “Todor Kableshkov”, Bulgaria
Restoration Of The Military Club Building In Sofia, By Micro Pile Injections, Chavdar Vassilev Kolev
International Conference on Case Histories in Geotechnical Engineering
The building of the Military Club is one of the most beautiful architectural monuments within the Bulgarian capital of Sofia. Construction of the club in a New Renaissance style and was initiated in 1895 according to the draft of Antonin Kolar, the famous Czech architect. It was completed in 1907 by Nikola Lazarov, a no less famous Bulgarian architect. Thereafter, a long series of cultural events, important for Bulgarian history were held on in Sofia Military Club. The building is a brick structure with three floors and a basement. Foundations are made out of massive stone blocks on the clay. …
Stabilization Of Existing Sheet Pile Cell In The Ohio River,
2013
Soil and Materials Engineers, Inc., Indianapolis, IN
Stabilization Of Existing Sheet Pile Cell In The Ohio River, David W. Bird
International Conference on Case Histories in Geotechnical Engineering
An existing 40 foot diameter sheet pile cell (cell) was used to support a dry fly ash loading platform at an electrical power generating facility on the Ohio River. The cell was designed and constructed in 1986 for support of a coal barge unloading crane but was never put into service. The cell has leaned riverward several inches in the years after construction. Stability analysis indicated a less than adequate overturning factor of safety without any additional loads. The addition of the loading platform could result in an overturning failure. A stabilizing system which provided a horizontal stabilizing force of …
Experimental Study On Mitigation Of Liquefaction-Induced Lateral Displacement Deep Soil Mixing,
2013
The University of Tokyo, Japan
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,
2013
Langan, Miami, FL
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 …
Prevention Of Additional Building Settlement Due To Adjacent Construction At St. Francis Hospital And Medical Center In Hartford, Ct,
2013
Simpson Gumpertz & Heger Inc., Waltham, MA
Prevention Of Additional Building Settlement Due To Adjacent Construction At St. Francis Hospital And Medical Center In Hartford, Ct, Giuliana Giuliana, Sean D. Radley, William P. Konicki, Drew Floyd
International Conference on Case Histories in Geotechnical Engineering
During excavation for the foundation of the new John T. O’Connell North Tower at St. Francis Hospital and Medical Center (SFHMC), in Hartford, Connecticut in 2008, Building 3, an immediately-adjacent five-story brick masonry building suddenly settled up to 1.5 in. and moved laterally about 5/8-in., resulting in severe cracking of interior and exterior bearing walls and floor slabs. The excavation was immediately backfilled within 30 feet of Building 3 and all construction activities were stopped until the condition of Building 3, which provided critical laboratory, pharmacy, and administrative support functions to the hospital, was evaluated and the cause of movement …
Foundation Treatment Of Embankment Dams With Combination Of Consolidation And Compaction Groutings,
2013
Sharif University of Technology, Iran
Foundation Treatment Of Embankment Dams With Combination Of Consolidation And Compaction Groutings, Fardin Jafarzadeh, Amir Akbari Garakani
International Conference on Case Histories in Geotechnical Engineering
Treatment of soft or weak foundation in a rockfill dam is of importance due to being susceptible to the large settlements, which may cause the dam body subjected to undesirable deformations and even, catastrophic failures. In this paper the stress- strain behavior of an under construction 58 m embankment dam in North-West of Iran, namely Gerdebin dam, and its soft and weak alluvial thick foundation has been assessed numerically. The effect of combination of consolidation and compaction grouting of the basement (as a remediation method) on the dam deformations and stress levels, is investigated. For this purpose, a finite difference …
Deep Excavation On 3 Sides Of A 21 Story Building: Accounts Of A Successful Deep Excavation Project,
2013
Sharif University of Technology, Iran
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 …
The Influence Of Freeze-Thaw Cycles On Cbr Values Of Silty Soils Stabilized With Lime And Microsilica,
2013
Imam Khomeini International University, Iran
The Influence Of Freeze-Thaw Cycles On Cbr Values Of Silty Soils Stabilized With Lime And Microsilica, Reza Ziaie Moayed, Younes Daghigh, Behzad Pourhadi Lahiji
International Conference on Case Histories in Geotechnical Engineering
The use of byproducts of industrial materials is one the most interesting areas in geotechnical engineering in recent years. Microsilica is one of these harmful byproducts that obtained from silicon or silicon alloy metal factories. On the other hand, silty soils are not considered as suitable soils due to their low strength characteristics. In this research, the effects of lime and microsilica on stabilization of silty bed soil of a region of Karaj railway are investigated and its efficiency as a subgrade material is evaluated. To determine the best combination of the stabilizer, various contents of lime and microsilica are …
3d Fem Modelling Of A Deep Excavation Case Considering Small-Strain Stiffness Of Soil And Thermal Shrinkage Of Concrete,
2013
University Of Oxford, United Kingdom
3d Fem Modelling Of A Deep Excavation Case Considering Small-Strain Stiffness Of Soil And Thermal Shrinkage Of Concrete, Yuepeng Dong, Harvey Burd, Guy Houlsby, Zhonghua Xu
International Conference on Case Histories in Geotechnical Engineering
A typical top-down deep excavation project in Shanghai was carefully monitored during the construction process. This case history was back-analysed with a complex 3D FEM numerical model in ABAQUS to investigate the influence of different modelling procedures. The model considered the detailed construction procedures and structural information. The calculations included the small-strain stiffness of the soil and thermal shrinkage of the concrete beams and slabs. The small-strain stiffness is modelled with a multi-surface soil model developed at Oxford which has been implemented into ABAQUS. The diaphragm wall was modelled as an anisotropic linear elastic material to represent the effect of …
