Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/10957
Title: Simplified procedures for the design of tall, stiff tieback walls
Authors: Innovations for Navigation Projects Research Program (U.S.)
Strom, Ralph W.
Ebeling, Robert M., 1954-
Keywords: Apparent pressure diagram
Construction sequencing
Equivalent beam
Ground anchor wall
Reference deflection method
Soil springs
Tieback wall
Design
Construction
Bulkheads
Publisher: Information Technology Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/ITL TR 02-10.
Description: Technical Report
Abstract: Methods used in the design of flexible and stiff tieback walls are described. Methods applicable to the design of stiff tieback wall systems are illustrated by example. Important in the design of stiff tieback wall systems is the consideration of construction sequencing effects. Illustrated by example are the equivalent beam on rigid supports method and the equivalent beam on inelastic supports method. Both the equivalent beam on rigid supports and the equivalent beam on inelastic supports analysis methods consider construction sequencing effects. The equivalent beam on rigid supports method uses soil pressure distributions based on classical methods. The equivalent beam on inelastic supports method uses soil springs (nonlinear) to determine earth-pressure loadings and preloaded concentrated springs (nonlinear) to determine tieback forces. Soil springs are in accordance with the reference deflection method proposed in the Federal Highway Administration’s “Summary report of research on permanent ground anchor walls; Vol II, Full-scale tests and soil structure interaction model” (FHWA-RD-98-066). Soil springs are shifted after each excavation stage to account for the plastic soil movements that occur during excavation. The software program CMULTIANC, newly developed to facilitate the equivalent beam on inelastic supports construction-sequencing analysis, is illustrated in the report. The results from the equivalent beam on rigid supports and equivalent beam on inelastic supports analyses are compared with each other and to the results obtained from other tieback wall analyses. The results are also compared with those obtained from apparent pressure diagram analyses. The apparent pressure diagram approach is common to the design of flexible wall systems.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/10957
Appears in Collections:Technical Report

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