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 …
Investigating The Performance Of Ground Anchor Through The Failure Slope Disaster In Taiwan,
2013
Huafan University, Taiwan
Investigating The Performance Of Ground Anchor Through The Failure Slope Disaster In Taiwan, Ching-Jiang Jeng, Yen-Cheng Chen
International Conference on Case Histories in Geotechnical Engineering
At milestone 3.1 km of the Formosa Freeway in northern Taiwan, a landslide occurred on April 25, 2000, causing nearly 200,000 m3 of earth and rock to slump down onto the freeway below. Four people trapped in cars beneath the collapsed slope died. How such a tremendous slope failure could happen in dry weather without advanced warning is attributed to two key factors: (1) Long-term groundwater infiltration resulting in the softening of thin interlayer between sandstone and shale; (2) Ground anchor corrosion resulting in a decrease in slope stability. Together these two factors caused the slope to reach a …
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 …
Lessons From Revisiting Three Cases Of Slope Failure,
2013
National Technical University of Athens, Greece
Lessons From Revisiting Three Cases Of Slope Failure, Konstantina Papadopoulou, George Gazetas
International Conference on Case Histories in Geotechnical Engineering
Three old failures of geotechnical projects are analyzed, where some original design uncertainties were lately discovered. The first case concerns the failure during construction of a slope at the portal area of a tunnel in Greece, due to unexpected excessive water pressures. The failure was restricted to the upper weathered zone of flysh formation. Due to difficulties in performing laboratory tests with such hard soil material necessitated the estimation of shear strength parameters on the basis of the rockmass classification systems. The next case deals with an extensive failure of an open pit mine slope in Greece. The ground consists …
Lessons Learned From The Disaster At Lippe Canal Bridge,
2013
German Federal Waterways Engineering and Research Institute, Germany
Lessons Learned From The Disaster At Lippe Canal Bridge, Markus Herten, Eva Dornecker
International Conference on Case Histories in Geotechnical Engineering
In October 2005, during construction works at the new Lippe canal bridge, massive water leakage from the Dortmund-Ems-Canal occurred below a wing wall at the northern abutment of the old, still operated canal bridge. Water passed through a leak of the claylined canal, flowing underneath a pile-supported wing wall into a minor excavation pit. This excavation pit was supposed to be protected by a surcharge filter. Since failure of the lining should be considered for all construction phases, it cannot be regarded as the cause of the disaster. Consequently, the paper focuses on the verification against hydraulic heave and erosion …
Levee Foundation Remediation Using The Deep Mix Method,
2013
TREVIICOS Corp., Charlestown, MA
Levee Foundation Remediation Using The Deep Mix Method, Wesley Schmutzler, Filippo Maria Leoni, Kyle Sansing
International Conference on Case Histories in Geotechnical Engineering
Hurricane Katrina was responsible for hundreds of deaths, billions of dollars of damage, and left the levee system in New Orleans in a state of disrepair. Many levees that make up the Flood Protection system for New Orleans were overtopped and sustained considerable damage. This case history will look at one section of levee in New Orleans East designated LPV (Lake Pontchartrain and Vicinity) -111 that is 5.3 miles in length. LPV-111 was overtopped and breeches occurred adjacent to structures. The United States Army Corps of Engineers (USACE) was tasked to not only repair the levee, but also to raise …
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 …
Numerical Analyses Of Soil Deformations Around Deep Excavations,
2013
Sevencan Architecture Engineering, Turkey
Numerical Analyses Of Soil Deformations Around Deep Excavations, Oktay Sevencan, Kutay Ozaydin, Havvanur Kilic
International Conference on Case Histories in Geotechnical Engineering
In this study, the deep excavation of Cincin Station located along the Bağcılar - Otogar metro line which is currently under construction in Istanbul is modeled numerically. The excavation (depth 32.5 m) of the station is carried out with a surrounding slurry trench diaphragm wall and top-down construction method. The six slabs of the station building and the foundation mat are used as support elements. Lateral soil displacements are measured with inclinometers placed in the wall and nearby soil layers. The results of numerical analysis using soil profile and geotechnical parameters obtained from conventional field and laboratory tests and measured …
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. …
Review Of The Seismic Retrofitting Of Sardis Dam,
2013
University of Illinois at Urbana Champaign, Urbana, IL
Review Of The Seismic Retrofitting Of Sardis Dam, Randa Asmar, Abdul Qudoos Khan
International Conference on Case Histories in Geotechnical Engineering
Most of the dams in Central United States, built in earlier part of 20th century are hydraulic fill dams. At the time of construction of these dams, earthquake engineering was still in its infancy and hence the dams lacked proper seismic design. Failure or near failure of earth dams as a consequence of earthquakes forced the United States Army Corps of Engineers (USACE) to re-evaluate the seismic performance of major earth dams in the Central United States, one of these dams was Sardis Dam. Investigations of Sardis Dam revealed a potentially liquefiable silty clay layer under the upstream shell. It …
Stabilization Of A Failed Highway Slope: A Multi-Phased Approach,
2013
Applied Geotechnical Services, Inc., Livonia, MI
Stabilization Of A Failed Highway Slope: A Multi-Phased Approach, Jeffrey T. Anagnostou, Anthony S. Nestor, Purushottam Deo, Heidi Flateau
International Conference on Case Histories in Geotechnical Engineering
A county road department in Southeastern Michigan was faced with the problem of stabilizing a slope along the Clinton River supporting a heavily trafficked roadway. The roadway and supporting slope had performed satisfactorily for over 50 years. However, a reinforced concrete seawall that had partially supported the slope deteriorated over time, contributing to progressive failure of the slope and resulting damage to the roadway. The site is situated within the glacial lake plain district of Southeastern Michigan. The site geology consists of approximately 7 feet of over-consolidated clays underlain by approximately 17 feet of normally consolidated glacial-lacustrine clays. Below the …
Susceptibility Analysis On Landslide Triggering Factors During The 2008 Wenchuan Earthquake,
2013
Waseda University, Japan
Susceptibility Analysis On Landslide Triggering Factors During The 2008 Wenchuan Earthquake, Deping Guo, Masanori Hamada
International Conference on Case Histories in Geotechnical Engineering
The 2008 Wenchuan earthquake with Mw7.9 induced numerous landslides along the Longmen Mt. zone in Sichuan Province of China. The authors investigated into various influential factors on the slope stability of 119 landslides in Wenchuan County, such as horizontal peak ground acceleration, slope angle, slope height, rock materials and geological structures. The authors developed hanging wall and footwall‟s acceleration attenuation formulae from 115 seismic stations and the formulae confirmed hanging-foot wall effect had notable influence on landslide distribution density and occurrence probability. The results of multivariable analysis clarified that slope height, horizontal peak ground acceleration and geological structures …
The Simplified Kzp6 Method For Tieback Wall Design In Granular And Cohesive Soils,
2013
California State University/ ACI/ Caltrop, Inc., Long Beach, CA
The Simplified Kzp6 Method For Tieback Wall Design In Granular And Cohesive Soils, Kumars Zand-Parsa, Kamran Zand-Parsa
International Conference on Case Histories in Geotechnical Engineering
Tieback retaining walls are using as temporary shoring systems for bridge footings or other structures that need deep excavations. Design and design review process are time consuming, and the possibility of making mistakes encourages us to find a simplified method for designing the tieback walls. Tieback walls with maximum 20m height and with 1 to 4 rows of anchors is considered in this paper. Whole length of the drilled holes will be filled with grout after setting the rods or stressing cables. Sometimes for temporary shoring the rod will be anchored to a concrete block supported by dirt, so there …
Underpinning A Residential Structure On Uncontrolled Fill With Helical Screw-Piles,
2013
University of Massachusetts, Amherst, MA
Underpinning A Residential Structure On Uncontrolled Fill With Helical Screw-Piles, Alan J. Lutenegger
International Conference on Case Histories in Geotechnical Engineering
Underpinning of a private residence using square-shaft helical Screw-Piles is described. A two story wood frame single-family residence constructed in 1996 in a small subdivision started to experience differential settlement not long after construction. The settlement continued for several years, leading to excessive cracking in the basement walls and floor, severe misalignment of doors and windows and cracking of interior walls. It was discovered that the area of the housing development had previously been used as a commercial sand and gravel pit which had subsequently been used as a local dumping area for miscellaneous refuse and which had then been …
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 …
Failures And Remediation Of Rock Slope Stability Problems And Remediation At Earthquakes At Part Of Werka Descent Road West Of Saudi Arabia,
2013
King Abdulaziz University, Saudi Arabia
Failures And Remediation Of Rock Slope Stability Problems And Remediation At Earthquakes At Part Of Werka Descent Road West Of Saudi Arabia, Bahaaeldin Sadagah
International Conference on Case Histories in Geotechnical Engineering
Werka descent road lies at western region of Saudi Arabia. It is constructed two years ago harmed due to rainstorm and absence of remedial measures. Werka mountainous road subjected to failures of man-made rock slope faces, and debris flow along both sides of 8-m width road. Intensive geotechnical study includes the RMR and GSI rock masses classifications were applied indicates that the rocks are medium to poor quality. The integrated techniques such as graphical method, modeling, and simulation were utilized to assess rock slope failures and rockfalls by using DIPS, RocFall, RocPlane and Swedge programs, and recommend the remedial measures …
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 …
Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study,
2013
CSIR-North East Institute of Science & Technology Jorhat, India
Finding F.O.S For Flow Type Landslide With Static Liquefaction At Karshingsa – A Case Study, Gokul K. Bayan
International Conference on Case Histories in Geotechnical Engineering
Karshingsa is a hilly terrain situated in lower Himalayan region under Arunachal Pradesh in India. It expresses occurrence of severe landslides of debris flow nature almost every year as and when consecutive 3-month rainfall precipitation during peak monsoon period exceeds about 2,300 mm, all along the lower Himalayan region of Eurasian plateau most particularly in Karshingsa area. Study carried out in the lower belt of Arunachal Himalaya for about more than one decade proclaims that 45%-55% landslides are flow type origin, the debris of which are flowing like liquid. Mechanism of such flow failure is static liquefaction developed in a …
