NCHRP Report 611:

Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments

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Size: 148 pages, 8.5 x 11

Publication Year:2009

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Authors:
Ignatius Po Lam; Geoffrey R Martin; Donald G Anderson; Joseph N Wang; Transportation Research Board
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TRB's National Cooperative Highway Research Program (NCHRP) Report 611: Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments explores analytical and design methods for the seismic design of retaining walls, buried structures, slopes, and embankments. The Final ...
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Table of Contents
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Front Matter	i-x
1.1 Overall Project Objectives, Approach, and Schedule	1-1	(skim)
1.2.1 Plans for Implementing the LRFD Design Methodology	2-3	(skim)
1.2.2 Overview of Conclusions from Initial Phase of Work	4-4	(skim)
1.2.3 Overview of Conclusions from Second Phase of Work	5-6	(skim)
1.2.4 Overview of Conclusions from Third Phase of Work	7-7	(skim)
1.3.1 Volume 1 - Final Project Report	8-8	(skim)
1.3.2 Volume 2 - Recommended Specifications, Commentaries, and Example Problems	9-9	(skim)
2.1 Earthquake Design Basis	10-10	(skim)
2.2 Literature Search	11-11	(skim)
2.2.1 Key References	12-13	(skim)
2.2.2 General Observations	14-14	(skim)
2.3 DOT, Vendor, and Consultant Contacts	15-16	(skim)
2.4 Conclusions	17-17	(skim)
3.1.1 Gravity and Semi-Gravity Walls	18-20	(skim)
3.1.2 MSE Retaining Walls	21-21	(skim)
3.2.1 Seismic Considerations for Soil Slopes	22-22	(skim)
3.2.2 Seismic Considerations for Rock Slopes	23-23	(skim)
3.3 Buried Structures	24-24	(skim)
3.4 Conclusions	25-25	(skim)
4.1 Developments for Seismic Ground Motions	26-27	(skim)
4.2.1 Generalized Limit Equilibrium Analyses	28-28	(skim)
4.2.2 Wall Height-Dependent Seismic Coefficient	29-29	(skim)
4.3 Developments for Slopes and Embankments	30-30	(skim)
4.4.1 Analysis Procedures for TGD	31-32	(skim)
4.5 Summary	33-34	(skim)
5.1.1 Update to AASHTO Seismic Ground Motion Criteria	35-37	(skim)
5.1.2 Range of Ground Shaking Levels in the United States for Referenced Soft Rock	38-38	(skim)
5.1.3 Variation in Spectral Shapes for Soil and Rock Sites in WUS versus CEUS	39-40	(skim)
5.2.2 Description of Ground Motion Database	41-41	(skim)
5.2.4 Microsoft Access Database	42-42	(skim)
5.2.7 Newmark Sliding Block Displacement Correlations	43-45	(skim)
5.2.8 Comparison Between Correlations	46-47	(skim)
5.2.9 Confidence Level	48-48	(skim)
5.3 Correlation of PGV with S1	49-53	(skim)
5.4 Conclusions	54-54	(skim)
6.1.1 Scattering Analyses for a Slope	55-62	(skim)
6.1.2 Scattering Analyses for Retaining Walls	63-65	(skim)
6.2 Conclusions	66-67	(skim)
7.1 Current Design Practice	68-70	(skim)
7.2.1 Seismic Active Earth Pressures	71-72	(skim)
7.2.2 Seismic Passive Earth Pressures	73-73	(skim)
7.3.2 Results of M-O Analyses for Soils with Cohesion	74-74	(skim)
7.3.3 Implication to Design	75-75	(skim)
7.5 Height-Dependent Seismic Design Coefficients	76-76	(skim)
7.5.1 Evaluation of Impedance Contrasts and Soil Behavior	77-78	(skim)
7.5.2 Results of Impedance Contrast and Nonlinearity Evaluations	79-80	(skim)
7.6 Displacement-Based Design for Gravity, Semi Gravity, and MSE Walls	81-81	(skim)
7.7 Conventional Gravity and Semi-Gravity Walls - Recommended Design Method for External Stability	82-83	(skim)
7.8.2 MSE Walls - Design Method for External Stability	84-86	(skim)
7.8.3 MSE Walls - Design Method for Internal Stability	87-87	(skim)
7.9.1 Nongravity Cantilever Walls	88-90	(skim)
7.9.2 Anchored Walls	91-92	(skim)
7.9.3 Soil Nail Walls	93-93	(skim)
7.10 Conclusions	94-95	(skim)
8.1.1 Engineered Slopes and Embankments	96-96	(skim)
8.2.1 Limit Equilibrium Approach	97-98	(skim)
8.2.2 Displacement-Based Approach	99-99	(skim)
8.3 Proposed Design Methodology	100-100	(skim)
8.4.1 Problem Description	101-101	(skim)
8.5.1 Limit Equilibrium Design Methods	102-102	(skim)
8.5.3 Liquefaction Potential	103-103	(skim)
8.6 Conclusions	104-104	(skim)
9.2 Culvert/Pipe Characteristics	105-105	(skim)
9.3 General Effects of Earthquakes and Potential Failure Modes	106-106	(skim)
9.3.1 Ground Shaking	107-107	(skim)
9.4 Current Seismic Design Practice for Culverts or Other Buried Structures	108-108	(skim)
9.5.1 Ovaling of Circular Conduits	109-112	(skim)
9.5.2 Racking of Rectangular Conduits	113-114	(skim)
9.6.2 Model Assumptions and Results	115-128	(skim)
9.7 Conclusions and Recommendations	129-130	(skim)
10.2 Retaining Walls	131-131	(skim)
10.3 Slopes and Embankments	132-132	(skim)
10.5 Need for Confirming Methods	133-133	(skim)
References	134-136	(skim)
Appendices	137-137	(skim)
Abbreviations used without definitions in TRB publications	138-138	(skim)

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 611: Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments explores analytical and design methods for the seismic design of retaining walls, buried structures, slopes, and embankments. The Final Report is organized into two volumes. NCHRP Report 611 is Volume 1 of this study. Volume 2, which is only available online, presents the proposed specifications, commentaries, and example problems for the retaining walls, slopes and embankments, and buried structures.

The appendices to NCHRP Report 611 are available online and include the following:
A. Working Plan
B. Design Margin—Seismic Loading of Retaining Walls
C. Response Spectra Developed from the USGS Website
D. PGV Equation—Background Paper
E. Earthquake Records Used in Scattering Analyses
F. Generalized Limit Equilibrium Design Method
G. Nonlinear Wall Backfill Response Analyses
H. Segrestin and Bastick Paper
I. MSE Wall Example for AASHTO ASD and LRFD Specifications
J. Slope Stability Example Problem
K. Nongravity Cantilever Walls

View information about the TRB Webinar on Report 611: Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments: Wednesday, February 17, 2010

NCHRP Report 611:

Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments

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