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Articles 22531 - 22560 of 33708
Full-Text Articles in Entire DC Network
Geotechnical Problems In The Construction Of Underground Structures, E. Padilla
Geotechnical Problems In The Construction Of Underground Structures, E. Padilla
International Conference on Case Histories in Geotechnical Engineering
The paper describes, one of the typical cases in the construction of subterrain works in the city of Guadalajara , Jalisco; México; placed in a big landfill of pyroclastic materials, that are good aquifers that is why in the subsoil exists important hydrological resources and is the reason that when digging underground structures that exceed the groundwater level there were a lot of problems. The case presented is of one of the stretches of the tunnel for the urban electric train, that since its construction had failures; these are analyzed, the solutions implemented are described , and the behavior of …
Author Index Volume I And Ii, Multiple Authors
Author Index Volume I And Ii, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Meeting Minutes Of The Organizing And Steering Committees, Multiple Members
Meeting Minutes Of The Organizing And Steering Committees, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Table Of Contents - Vol. I, Multiple Authors
Table Of Contents - Vol. I, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iii, Multiple Authors
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iii, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Ii, Multiple Authors
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Ii, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Conference Schedule, Multiple Participants
Conference Schedule, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Analysis Of Small Pipe Piles Using The Field Vane, G. A. Miller, A. J. Lutenegger
Analysis Of Small Pipe Piles Using The Field Vane, G. A. Miller, A. J. Lutenegger
International Conference on Case Histories in Geotechnical Engineering
Results of axial compressive load tests on three small diameter pipe piles driven in a varved clay deposit are presented. Predictions of the axial pile capacity were made using the a-method originally proposed by Tomlinson (1957, 1971) and incorporating undrained strength profiles determined with the field vane. Predicted and measured capacities are compared and discussed in light of the various factors which can affect the outcome such as vane geometry, vane testing procedure and interpretation, pile load testing conditions, and empirical relationships incorporated in predictions.
Bearing Capacity And Load-Displacement Behavior Of Rigid Pads On Soft, Sensitive, Clay, R. J. Jardine, B. M. Lehane, P. R. Smith, P. A. Gildea
Bearing Capacity And Load-Displacement Behavior Of Rigid Pads On Soft, Sensitive, Clay, R. J. Jardine, B. M. Lehane, P. R. Smith, P. A. Gildea
International Conference on Case Histories in Geotechnical Engineering
The paper describes tests on rigid square pads at the UK national soft clay research site at Bothkennar, Scotland. The work was performed as a low cost adjunct to the instrumented pile research described by Lehane and Jardine (1992). Its aims were to investigate (i} bearing capacity, (ii) load-displacement response to short and long term loading, (iii) the applicability of relevant theories and (iv) relationships between soil properties determined in-situ and those measured in high quality laboratory tests.
Case Histories: Geology, Value Engineering And Deep Foundations In New York Area, S. K. Jain
Case Histories: Geology, Value Engineering And Deep Foundations In New York Area, S. K. Jain
International Conference on Case Histories in Geotechnical Engineering
The geologic and subsurface conditions in the Metropolitan New York area are highly variable and complex. The Building Code of the City of New York (henceforth, The Code) requires soil identification based on their geological history and engineering characteristics. The code is very stringent and it specifies elaborate subsurface exploration, field testing and geotechnical analysis for the foundation design and its installation. In this paper three deep foundation construction case histories in the New York City are presented which emphasize the importance of site geology, subsurface exploration and value engineering.
Case History Of Soil Improvement For A Large-Scale Land Reclamation, Bang W. Shin, Eun C. Shin, Sun W. Kim, Byung C. Yeo, Paghunath Dass
Case History Of Soil Improvement For A Large-Scale Land Reclamation, Bang W. Shin, Eun C. Shin, Sun W. Kim, Byung C. Yeo, Paghunath Dass
International Conference on Case Histories in Geotechnical Engineering
In recent years, land reclamation works have been extensively implemented along the coastal lines for a variety of purposes. This paper relates to the case history of a land reclamation project for a steel mill complex construction in Korea. Site improvement techniques used in this project include construction of sand drains and pre loading. Construction procedures of sand drains are described as well as staged loading process along with field observations. Field measurement of settlement and theoretically estimated values are compared. The results of standard penetration tests and unconfined compression tests at various depths of soil, and time intervals are …
Crack Damage And Treatment Of Low House On Expansive-Contractive Red Clay, Ke Zunjing, Shan Mei
Crack Damage And Treatment Of Low House On Expansive-Contractive Red Clay, Ke Zunjing, Shan Mei
International Conference on Case Histories in Geotechnical Engineering
Red clay distributes widely in China, it can be classified into two kinds: swell- shrinking and non-swell-shrinking red clay. According to the strong strength and low compressibility features of the Expansive-contractive Red Clay (ECRC), it can be used as an excellent natural ground. Sometimes its swell- shrinkage property may cause crack damage to the low house which based on the ECRC. This rupture is quite common and serious, the crack house became dangerous and had to be rebuilt. In China, the main preventive measures against the crack damage are: moisture holding, deep embedment, soil replacement method (sand cushion), sand surrounding …
Discussions And Replies Session 1, T. P. Smith, Y. Iwasaki, D. Sielbach, C. Mirza
Discussions And Replies Session 1, T. P. Smith, Y. Iwasaki, D. Sielbach, C. Mirza
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Dynamic And Static Analysis And In Situ Investigation Of Vibro-Fundex Piles, A. Tejchman, K. Gwizdala
Dynamic And Static Analysis And In Situ Investigation Of Vibro-Fundex Piles, A. Tejchman, K. Gwizdala
International Conference on Case Histories in Geotechnical Engineering
Based on dynamic and static formulas and loading tests analysis of bearing capacity of type Vibro-Fundex driven piles is presented. The piles were embedded into noncohesive soils of various origin and degree of compaction. Using this analysis and performed investigations, the lengths of piles designed on the basis of static formulae have been corrected for safety transferring of loads into subsoil.
Eccentric Loading Of Helical PiersTm For Underpinning, Gary Seider
Eccentric Loading Of Helical PiersTm For Underpinning, Gary Seider
International Conference on Case Histories in Geotechnical Engineering
Over the last six years, Helical Piers have been utilized as compression members in the remedial repair of residential and light commercial structures. Current installation techniques create a small offset between the pier shaft and the grade beam or footing being underpinned. The purpose of this study was to examine the effects of the eccentric load that is applied to the top of the shaft on the Helical Pier. Three different sizes of piers were installed at a building site where the soil is predominantly clay. Compressive loads were applied, and data was recorded from which bending moments versus depth, …
Engineering Illustrations Of Correcting Building Inclination By Stress Redistribution Method, Shi-Tao Hou, Xiao-Xue Ding, Zai-Cheng Bai
Engineering Illustrations Of Correcting Building Inclination By Stress Redistribution Method, Shi-Tao Hou, Xiao-Xue Ding, Zai-Cheng Bai
International Conference on Case Histories in Geotechnical Engineering
By drilling large diameter holes in foundation soil and digging out soils to release (or redistribute) lateral stress in subsoil so as to create new settlement, a new method, which is called stress redistribution method, has been developed for correcting inclined building on soft foundation soil. Using this method, tens buildings with inclination up to 1-2% have been corrected and resumed their normal function in Wuhan, China. Some typical case histories are selected to illustrate the sensitive, controllable, and reliable characteristics of this method. The technical problems encountered in correcting process, such as the induced settlement, its influence on neighbour …
Failure Of Offshore Concrete Piles During Construction, V.D. S. Raju, R. Sundaravadivelu, V. G. Idichandy
Failure Of Offshore Concrete Piles During Construction, V.D. S. Raju, R. Sundaravadivelu, V. G. Idichandy
International Conference on Case Histories in Geotechnical Engineering
Two offshore piles of 1000 mm diameter with 1 m socketing into rock in 15 m water depth have failed during construction. The analysis of failure considering wave and current forces, structural and foundation capacities and vibration measurement on freshly concreted and well set piles is discussed.
Foundation Strengthening And Protective Measures For Sri Sangameshwar Temple At Kudal Sangam, Karnataka, Devendra Sharma
Foundation Strengthening And Protective Measures For Sri Sangameshwar Temple At Kudal Sangam, Karnataka, Devendra Sharma
International Conference on Case Histories in Geotechnical Engineering
Sri Sangameshwara temple situated at the confluence of two rivers developed noticeable tilt. Also the temple site be inundated by the back waters of the dam during floods. An elaborate plan of dismantling the temple and reconstructing it by the same stone pieces and statuary could be carried through partially only and the sanctum santorum portion housing the ‘Lingam’ had to be retained. Now the entire temple is to be reconstructed as and where it was. The temple was founded on a boulder platform with hetrogeneous river deposits below it. Honouring the constraints of uninterrupted daily worship rituals in the …
Foundations Failures Of Bridges And Geotechnical Investigations, J. K. Jain, Rajesh Bhargava, A. K. Saxena
Foundations Failures Of Bridges And Geotechnical Investigations, J. K. Jain, Rajesh Bhargava, A. K. Saxena
International Conference on Case Histories in Geotechnical Engineering
In the present paper two cases of foundation failures due to which the complete bridge structure have failed are reported. The 93m long Palakmati high level brick masonry arch bridge on Hoshangabad - Piparia Road was constructed in year 1910. This bridge has shallow well brick masonry foundation with brick masonry wall type piers. Foundations of piers were on two circular shallow independent wells. The wells are resting on yellow soil. During floods of 1989, the pier No.3 sunk. This brought down 5 spans. Two well foundations were up-rooted. Cracks were developed in other arches also. The 90.5m long submersible …
Instrumented Load Test On A Bent Pile, P. Dunlop, R. E. Sandiford, D. R. Erali
Instrumented Load Test On A Bent Pile, P. Dunlop, R. E. Sandiford, D. R. Erali
International Conference on Case Histories in Geotechnical Engineering
The load carrying capacity of a bent shell pile in soft silts and clays was determined from an instrumented test. Lateral pile displacements along the pile were measured during loading and unloading using an inclinometer traveling in a plastic casing. Pile capacity was estimated by Johnson's (1962) method prior to the load test and by the STRUDL structural engineering program after performing the load test. Both methods adequately predicted the pile performance. STRUDL, however, accommodated more realistic soil parameter variation and boundary conditions necessary for an integral soil-pile-structure interaction analysis.
Monitoring Of Load And Distribution In Long Caissons Under 49 Story Structure, W. A. Trow, T. G. Orpwood, R. L. Carrington
Monitoring Of Load And Distribution In Long Caissons Under 49 Story Structure, W. A. Trow, T. G. Orpwood, R. L. Carrington
International Conference on Case Histories in Geotechnical Engineering
This paper presents the results of settlement and load distribution monitoring carried out during the construction of a 49 storey condominium supported on long end-bearing caissons socketed into shale bedrock. Four caissons were instrumented to determine load distribution within the rock socket. One of these caissons also was instrumented to measure actual load reaching the top and bedrock level of the shaft. As of early March 1992, with the building already topped-off for over 6 months and about 100% of anticipated dead load applied, the settlement appears to consist entirely of elastic compression of the caisson shafts. Although the estimated …
Performance Of Fill Soils During The Loma Prieta Earthquake, J. D. Frost, F. A. Reyna, J. L. Chameau, P. Karanikolas
Performance Of Fill Soils During The Loma Prieta Earthquake, J. D. Frost, F. A. Reyna, J. L. Chameau, P. Karanikolas
International Conference on Case Histories in Geotechnical Engineering
The results of high quality in situ test results obtained at Hunter's Point Naval Station both before and after the Lorna Prieta earthquake are presented. The interpretation of these tests and the results of subsequent numerical ground motion analyses are validated by the observed response at that site during the event. Data show that densification of the loose fill soils occurred as a result of the seismic activity and corroborate the observed surface deformations.
Prediction Of Drilled Shafts Axial Capacities Using Cpt Results, O. M. Alsamman, J. H. Long
Prediction Of Drilled Shafts Axial Capacities Using Cpt Results, O. M. Alsamman, J. H. Long
International Conference on Case Histories in Geotechnical Engineering
Results from nineteen full-scale axial load tests are reviewed to compare methods for predicting axial capacities of drilled shafts using results of Cone Penetration Tests (CPT). The three methods to estimate failure loads are: (1) Nottingham method, (2) Laboratoire des Ponts et Chaussees method (LPC), and (3) the Poulos and Davis method. Comparisons are made to assess the accuracy and dependability of each predictive method. Analyses of results indicate that the LPC method provides the most reliable predictions for axial capacities of drilled shafts in clay.
Reanalysis Of A Vacuum Distillation Unit Foundation, M. N. Viladkar, Swami Saran
Reanalysis Of A Vacuum Distillation Unit Foundation, M. N. Viladkar, Swami Saran
International Conference on Case Histories in Geotechnical Engineering
This paper deals with the reanalysis of the foundation of an already existing Vaccum Distillation Unit in an oil refinery. The reanalysis is required to suggest if the existing foundation of the unit would be capable enough to withstand an additional pressure intensity to which it would be subjected due to proposed expansion of the unit. The paper therefore discusses the geotechnical investigation program undertaken for evaluating the relevant design parameters and the methodology adopted to compute the sustainable pressure of the foundation.
Researches In The Testing Method Of Dynamic Interaction Of Pile-Soil System Model And Its Calculation Of Dynamic Characteristics, Zu Ming Jiang, Wei Feng Zhao
Researches In The Testing Method Of Dynamic Interaction Of Pile-Soil System Model And Its Calculation Of Dynamic Characteristics, Zu Ming Jiang, Wei Feng Zhao
International Conference on Case Histories in Geotechnical Engineering
This paper provides the theoretical base and a reasonable testing method for pile foundation, the top of piles are free and the bottom of piles are fixed, dynamic characteristics test of continuous beam bridge, considering the dynamic interaction of pile-soil for doing pile foundation dynamic test in site. The model analysis method and CAT( Computer Aided Test ) are used for model parameters identification from the dynamic of pile foundation mode, several low cured modes and natural frequencies are got. Furthermore, the theoretical computation compared with result of the mode test. Both are most alike. The dynamic characteristics of the …
Rigid Vs. Flexible Pile Caps: Case Study For 235 M. Delhi T.V. Tower, H. R. Viswanath
Rigid Vs. Flexible Pile Caps: Case Study For 235 M. Delhi T.V. Tower, H. R. Viswanath
International Conference on Case Histories in Geotechnical Engineering
Foundation for the prestigious 235m. Delhi television tower commissioned in 1988 in New Delhi consists of 279 reinforced concrete piles of 500 mm diameter with 1250 KN load carrying capacity. The tower is resting on a circular pile cap 32 m. diameter with an average thickness of 2.5 m. Pile cap was designed assuming full rigid conditions at site. When it was noticed that the pile reinforcement was predominantly anchored to the layers of the pile cap reinforcement, it was apprehended that this arrangement does not ensure complete rigidity as assumed, but it makes it only partially flexible. This paper …
Taj Mahal – An Appraisal Of Foundation Performance, A. S. R. Rao, Swami Saran, S. C. Handa, G. Ramasamy, M. N. Viladkar
Taj Mahal – An Appraisal Of Foundation Performance, A. S. R. Rao, Swami Saran, S. C. Handa, G. Ramasamy, M. N. Viladkar
International Conference on Case Histories in Geotechnical Engineering
Because of severe restrictions placed by the National Authority, no authentic data on subsoil details below Taj Mahal - a protected monument - is available. For the first time, an attempt has been made to fill in gaps that exist in our knowledge of subsoil profile below the structure and present a plausible appraisal of foundation performance during the existence of the structure. Since details of foundations cited in literature on Taj Mahal really fall into the realms of architectural conjecture, in the present analysis, engineering intuition and judgement have gone into making certain premises regarding the probable type, dimensions …
Testing Of Drilled Shafts Socketed Into Limestone, G. L. Panozzo, F. H. Kulhawy, F. C. Bauhof, A. J. O'Brien
Testing Of Drilled Shafts Socketed Into Limestone, G. L. Panozzo, F. H. Kulhawy, F. C. Bauhof, A. J. O'Brien
International Conference on Case Histories in Geotechnical Engineering
Construction of the first phase of the South Parking Garage at the Tampa International Airport in Florida was completed in December 1991. A full-scale field load testing program was used in design of the drilled shaft foundations, with specific goals of determining the bond strength and characterizing the load-displacement behavior of the rock sockets. The displacement behavior and bond strength of the test shafts were predicted from elastic solutions and semiempirical methods. Input parameters included the rock uniaxial compressive strength and elastic modulus. The load test results are compared to the predictions herein, and the practical application of these comparisons …
The Analysis Of Local Subsoil Failure, Igor Soric, Željko Sokolić, Darko Zvornik
The Analysis Of Local Subsoil Failure, Igor Soric, Željko Sokolić, Darko Zvornik
International Conference on Case Histories in Geotechnical Engineering
The paper deals with a case history of a local foundation failure caused by removing the neighbouring building. Displacement measurements after removing the neighbouring all the working stages at the site. The shape of the deformation curve points to failure after removing the neighbouring old building. The foundation soil is a Moscow sand typical for the large part of the urban Moscow area. It is a poorly graded fine sand of a medium density. Using back analysis for all working stages the peak and residual parameters caused by foundation failure were defined. The ratio of residual to peak value of …
The Performance Of Structures After Imposed Rotations, T. Amirsoleymani
The Performance Of Structures After Imposed Rotations, T. Amirsoleymani
International Conference on Case Histories in Geotechnical Engineering
After the initial full loading of two similar grain silos, which were built on silty sand, the Export-Import Building tilted toward the Working Tower and the joints between the two structures closed. The lateral force caused cracks in the columns of E-I Buildings. Two different methods were used to rotate the structure. The first method was based on the uneven loading of structures. The second method vas to remove thin layers of soil by chains under the foundations. The B-I Buildings were successfully rotated at both sites in 1989. The measurements for settlement and tilt were made to compare the …