00965613

Component

https://doi.org/10.3141/1849-14

http://scholar.google.com...iber&publication_year=2003

CANDE is one of the most commonly used programs for analysis of buried pipe; however, CANDE is limited to applications with small deflections. This limitation is typically not problematic, but there are some instances in which analysts may be interested in large-deflection behavior. This limitation led to the consideration of other analysis tools. In this study ANSYS, a general finite element program, was used to model the soil-pipe system. Small- and large-deflection theories of ANSYS were used in the analysis of several case studies, and the results were compared with those of CANDE. Also, a code was written to run within ANSYS to include the following soil constitutive models: the hyperbolic tangent modulus with both power and hyperbolic bulk modulus. Results obtained using ANSYS with the modified soil models were in good agreement, with less than 10% difference, except in one case: CANDE results for 6.1 m of soil cover above the springline for 610-mm pipe diameter with SM and ML soils. Use of large-deflection theory resulted in an insignificant effect, less than 5%, when compared with ANSYS small-deflection theory results for soil heights up to 6.1 m above the springline, which proves that small-deflection theory is adequate for these cases. Comparing CANDE and ANSYS for 1,200-mm-diameter polyethylene (PE) pipes with experimental results showed that ANSYS more accurately describes the PE pipe behavior for cases of 9 m of soil cover or more and that large-deflection theory describes the PE pipe behavior better than small-deflection theory for a vertical deflection of 4% or more. The pipe material effect was investigated by comparing the results of ANSYS small- and large-deflection theories for both PE and polyvinyl chloride pipes. The difference between the small- and large-deflection theories for both pipe materials becomes significant, more than 10%, at a vertical deflection of 4%.

This paper appears in Transportation Research Record No. 1849, Soil Mechanics 2003.

English

p. 124-134

2003

Transportation Research Record

0309085845

Figures (15) ; References (21) ; Tables (2)

Deflection; Diameter; Pipe; Polyvinyl chloride; Soil structure interaction

ANSYS (Computer program); CANDE (Computer program)

Cover depth; Polyethylene

Geotechnology; Highways; Pipelines; I42: Soil Mechanics

TRIS, TRB, ATRI

Nov 21 2003 12:00AM

• AXIAL AND LATERAL LOAD PERFORMANCE OF TWO COMPOSITE PILES AND ONE PRESTRESSED CONCRETE PILE
• BURIED CORRUGATED THERMOPLASTIC PIPE: SIMULATION AND DESIGN
• CHARACTERIZATION OF TRANSVERSE CRACKING SPATIAL VARIABILITY: USE OF LONG-TERM PAVEMENT PERFORMANCE DATA FOR CONTINUOUSLY REINFORCED CONCRETE PAVEMENT DESIGN
• CONSTRUCTION-RELATED VARIABILITY IN PAVEMENT MAT DENSITY DUE TO TEMPERATURE DIFFERENTIALS
• CORPS OF ENGINEERS DESIGN OF GEOSYNTHETIC-REINFORCED UNPAVED ROADS
• DESIGN OF FIBER-REINFORCED POLYMER COMPOSITE PILES UNDER VERTICAL AND LATERAL LOADS
• DYNAMIC FINITE ELEMENT ANALYSIS OF VESSEL-PIER-SOIL INTERACTION DURING BARGE IMPACT EVENTS
• EFFECT OF BRIDGE-SOIL INTERACTION ON BEHAVIOR OF PILES SUPPORTING INTEGRAL BRIDGES
• EIGHT-YEAR FIELD PERFORMANCE OF SECONDARY ROAD INCORPORATING GEOSYNTHETICS AT SUBGRADE-BASE INTERFACE
• ENGINEERING PROPERTIES OF RECYCLED PLASTIC PINS FOR SLOPE STABILIZATION
• ESTIMATION OF PAVEMENT LAYER THICKNESS VARIABILITY FOR RELIABILITY-BASED DESIGN
• EVALUATION AND QUALITY CONTROL OF DRY-JET-MIXED CLAY SOIL-CEMENT COLUMNS BY STANDARD PENETRATION TEST
• FIELD PERFORMANCE OF EMBANKMENTS STABILIZED WITH RECYCLED PLASTIC REINFORCEMENT
• GEOSYNTHETIC-REINFORCED SOIL WALLS
• LABORATORY EVALUATION OF GEOGAUGE FOR COMPACTION CONTROL
• LOAD AND RESISTANCE FACTOR DESIGN, COST, AND RISK: DESIGNING A DRILLED-SHAFT LOAD TEST PROGRAM IN FLORIDA LIMESTONE
• RELATIONSHIP BETWEEN BACKCALCULATED AND LABORATORY-MEASURED RESILIENT MODULI OF UNBOUND MATERIALS
• RELATIONSHIP BETWEEN SOIL STIFFNESS GAUGE MODULUS AND OTHER TEST MODULI FOR GRANULAR SOILS
• SIMULATION OF FRACTURE INITIATION IN HOT-MIX ASPHALT MIXTURES
• SOIL ARCHING OVER DEEPLY BURIED THERMOPLASTIC PIPE (WITH DISCUSSION AND CLOSURE)
• STRENGTH PROPERTIES OF FLEXIBLE GEOGRIDS UNDER INDOOR AND OUTDOOR ULTRAVIOLET EXPOSURE
• USE OF STIFFNESS FOR EVALUATING COMPACTNESS OF COHESIVE PAVEMENT GEOMATERIALS
• USING PSEUDOSTRAIN DAMAGE THEORY TO CHARACTERIZE REINFORCING BENEFITS OF GEOSYNTHETIC MATERIALS IN ASPHALT CONCRETE OVERLAYS