00822715

Component

https://doi.org/10.3141/1772-02

http://scholar.google.com...+Dai&publication_year=2001

An earth pressure cell (EPC) is a device designed to provide an estimate of normal stress in soil. The practice of designing and manufacturing stress-measurement devices revolves around the study of the interaction between the measuring device and the host material. However, distribution of normal stress is not necessarily uniform across a given surface. Consequently, output from an EPC may be different under soil-loading conditions than under fluid pressure. In addition, depending on the design, as the cell deflects, an arching-type phenomenon may develop. A study was conducted to devise a scheme for calibration of EPCs and to recommend a procedure for field installation. A new testing device was designed to permit the application of uniaxial soil pressure to the EPC by using various types of soil and load configurations. Sensitivities computed from soil calibrations varied from those determined from fluid calibrations by as much as 30%. A field installation procedure was developed from model tests. In the laboratory, a thin-walled steel cylinder with a geotextile bottom was filled with uniform silica sand in a medium-dense state, and the EPC was placed within the sand. The entire apparatus (EPC, cylinder, and sand) was carried into the field and installed in the desired locations. The steel cylinder was then removed, leaving the cell, sand, and geotextile behind. Preliminary field data indicate that the soil calibration and placement procedure provide reasonably accurate measurements of the change in vertical stress.

This paper appears in Transportation Research Record No. 1772, Soil Mechanics 2001.

English

p. 12-19

2001

Transportation Research Record

0309072360

Figures (12) ; References (10)

Calibration; Cells (Measuring devices); Earth pressure; Installation

Geotechnology; Highways; Maintenance and Preservation; I42: Soil Mechanics

TRIS, TRB, ATRI

Jan 24 2002 12:00AM

• CLASS-A PREDICTION OF CONSTRUCTION DEFECTS IN DRILLED SHAFTS
• EFFECTS OF MINOR ANOMALIES ON AXIAL CAPACITY OF DRILLED SHAFTS
• ENGINEERING ANALYSIS OF DYNAMIC BEHAVIOR OF MICROPILE SYSTEMS
• ESTIMATING HIGHWAY EARTHWORK CROSS SECTIONS BY USING VECTOR AND PARAMETRIC REPRESENTATION
• EXAMINING THE EFFECTS OF REINFORCEMENT IN U.S. FOREST SERVICE DEEP-PATCH LANDSLIDE REPAIR TECHNIQUE: FULL-SCALE MODEL TESTS
• FAILURE OF GEOTEXTILE-REINFORCED VERTICAL SOIL WALLS WITH MARGINAL BACKFILL
• GEOCOMPOSITE CAPILLARY BARRIER DRAIN SYSTEM WITH FIBERGLASS TRANSPORT LAYER
• IN SITU MEASUREMENT AND EMPIRICAL MODELING OF BASE INFILTRATION IN HIGHWAY PAVEMENT SYSTEMS
• INSTALLATION SURVIVABILITY OF FLEXIBLE GEOGRIDS IN VARIOUS PAVEMENT SUBGRADE MATERIALS
• INSTRUMENTATION AND CONSTRUCTION PERFORMANCE MONITORING FOR I-15 RECONSTRUCTION PROJECT IN SALT LAKE CITY, UTAH
• LATERALLY LOADED DRILLED SHAFTS EMBEDDED IN SOFT ROCK
• LIMIT STATES AND FACTOR OF SAFETY IN DESIGN OF AN ANCHORED SHEET PILE WALL
• LIZZI'S STRUCTURAL SYSTEM RETROFIT WITH RETICULATED INTERNAL REINFORCEMENT METHOD
• MODELING PAVEMENT SUBDRAINAGE SYSTEMS
• MONITORING THE EFFECTS OF A DEEP EXCAVATION ON TWO ADJACENT OFFICE BUILDINGS
• PERFORMANCE OF GEOCOMPOSITE MEMBRANE AS PAVEMENT MOISTURE BARRIER
• QUALITY ASSURANCE PROCEDURE TO ASSESS MAINTENANCE ADEQUACY OF DRAINAGE ASSETS
• RATIONAL BASIS FOR EVALUATION AND DESIGN OF PAVEMENT DRAINAGE LAYERS
• REAL-TIME MONITORING OF SUBSIDENCE ALONG I-70 IN WASHINGTON, PENNSYLVANIA
• REPEATABILITY AND RELIABILITY OF THE TUBE SUCTION TEST
• SEISMIC BEHAVIOR OF MICROPILES USED AS FOUNDATION SUPPORT ELEMENTS: THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS
• STRAIN WEDGE MODEL HYBRID ANALYSIS OF LATERALLY LOADED PILE GROUP
• STUDY OF SCALP-AND-REPLACE EQUATION IN COMPACTION SPECIFICATION FOR SOIL WITH HIGH GRAVEL CONTENT
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