Helical Bearing Plate Foundations for Underpinning
Helical anchor foundations have been used in construction to provide resistance against uplift and compressive loading for structures such as transmission towers, tied walls, pipelines,...
Design and Construction of Stone Column Reinforced Cofferdams
A recent expansion of the North Carolina State Port Facility, at Wilmington, involved the use of six cellular cofferdams as earth retaining structures during dredging and final filling...
Power Pole Foundations in Reclaimed Mining Area
In central Florida, where strip mining for phosphate ore is a primary industry, street surfaces often become rolling because of differential settlement, and electrical transmission poles...
Case Histories of Shallow Foundations on Improved Soil
Case histories for four projects, with structures varying from a 27-story high rise to a one-story shopping center, are presented. For each of these projects, improving the soil to allow...
Consolidation Grouting Operations for Kirkwood Penstock
Kirkwood Penstock, which is part of the Hetch Hetchy water system of the City of San Francisco, California exhibited evidence of settlement and local extension following extraordinarily...
Deep Soil Mixing at the Jackson Lake Dam
The Jackson Lake Dam was constructed in 1917 in the Grand Teton National Park near Jackson, Wyoming. The dam was a hydraulic fill placed on a natural alluvium and outwash foundation. The...
Ground Modification for a 14-Story Structure Over a Deep Peat Deposit
The foundation design and construction for a 14-story reinforced concrete office building northwest of Minneapolis is described. The building's geometry provided unusual foundation...
Concrete Removal Techniques with Potential for Use in Rock
This paper describes concrete removal techniques that were employed in the rehabilitation of US Army Corps of Engineers mass concrete structures and are thought to have potential for limited...
Rock Excavation with Boom Mounted Hydraulic Impact Hammers
A hydraulic demolition hammer mounted on a common backhoe or excavator carrier has gained world wide acceptance in the construction industry as a viable alternative to blasting. This paper...
Fracturing of Rock Using Expansive Soundless Chemical Demolition Agents
The theoretical principles of the action of expansive soundless chemical demolition agents are presented. The procedure for using these demolition agents are briefly outlined. Differences...
Rock Excavation with Microwaves: A Literature Review
Research on the use of microwaves for breaking rocks started in the late fifties. In this paper, the principles of microwave heating and the possible mechanisms responsible for the breaking...
Model Tests for Bearing Capacity of Vertically Reinforced Foundations in Sand
Laboratory model test results for the bearing capacity of strip foundation supported by a sand layer with semi-flexible vertical rod reinforcements have been presented. All test results...
Tangent Modulus of Piles Determined from Strain Data
When evaluating measurements of strain or telltale shortening of a pile subjected to loading test, precise knowledge of the 'elastic' modulus is necessary. By means of plotting and analyzing...
Load Transfer in Deep Foundations Under Repeated Axial Loading
An analysis is presented of changes in axial load transfer for deep foundations under repeated loading, compared with static uplift and compression loading. Existing load test data demonstrate...
Modelling of Displacement Piles in Sand Using a Pressure Chamber
This paper describes a method of modelling the driving and loading of piles in the laboratory that permits variations of significant parameters and maintains effective stresses at levels...
On the Critical Relative Displacement of Pile Shaft and Surrounding Soil
Model pile pull-out tests have been conducted to investigate the characteristics of the critical relative displacement at which the critical pile skin resistance is mobilized. Test results...
The Influence of Cyclic Loading on the Lateral Load Response of Groups of Piles
The effects of cyclic loading on the lateral response of closely spaced groups of piles has been widely considered to be a single pile phenomenon, related to gapping and scour around the...
Numerical Modeling of Interface Behavior for Drilled Shaft Foundations Under Generalized Loading
To evaluate soil-foundation interaction numerically, an isoparametric thin layer element is used within a 3-D, material nonlinear, general purpose geotechnical analysis system developed...
Fact or Friction: A Review of Soil Response to a Laterally Moving Pile
A review of soil response around a laterally moving pile is presented and 'Winkler' spring soil modulus variations are discussed. Based on available theory, and...
Subgrade Models for Soil-Structure Interaction Analysis
Historical development of improvements to Winkler's spring subgrade model are traced. The improvements consist of various ways to provide shear coupling between the springs....
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