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Page 104
Suggested Citation:"Unpublished Material." National Academies of Sciences, Engineering, and Medicine. 2011. Development of a Precast Bent Cap System for Seismic Regions. Washington, DC: The National Academies Press. doi: 10.17226/14484.
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Page 105
Suggested Citation:"Unpublished Material." National Academies of Sciences, Engineering, and Medicine. 2011. Development of a Precast Bent Cap System for Seismic Regions. Washington, DC: The National Academies Press. doi: 10.17226/14484.
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Page 105
Page 106
Suggested Citation:"Unpublished Material." National Academies of Sciences, Engineering, and Medicine. 2011. Development of a Precast Bent Cap System for Seismic Regions. Washington, DC: The National Academies Press. doi: 10.17226/14484.
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104 Attachments to the contractor’s final report for NCHRP Project 12-74 are not published herein but are available online at www.trb.org/Main/Blurbs/164089.aspx. A list of attach- ments is provided below. Design Specifications • Attachment DS1: Revised Article 2.1 Definitions – Revision of current article to include definitions of emu- lative and hybrid systems • Attachment DS2: Revised Article 4.3.3 Displacement Magnification for Short Period Structures – Revised Article to account for hybrid systems • Attachment DS3: Revised Article 4.7.2 Vertical Ground Motion, Design Requirements for SDC D – Expanded Article to include explicit requirements for consideration of vertical excitation with integral precast bent caps discontinuous at bent • Attachment DS4: Revised Article 4.11.6 Analytical Plastic Hinge Length – Revised Article to account for integral concrete super- structures • Attachment DS5: Proposed Article 5.6.6 Ieff for Hybrid Systems – New Article for hybrid systems • Attachment DS6: Revised Article 8.4.2 Reinforcing Steel Modeling – Revised Article for hybrid systems • Attachment DS7: Proposed Article 8.8.14 Lateral Re- inforcement Requirement for Columns Connecting to a Precast Bent Cap – New Article to ensure spacing between the hoop at top of column and the bedding layer hoop does not compro- mise system ductility • Attachment DS8: Revised Article 8.5 Plastic Moment Capacity for SDC B, C, and D – Revised Article for hybrid systems • Attachment DS9: Revised Article 8.8.1 Maximum Longitu- dinal Reinforcement – Revised Article for hybrid systems • Attachment DS10: Revised Article 8.8.2 Minimum Longitu- dinal Reinforcement – Revised Article for hybrid systems • Attachment DS11: Proposed Article 8.8.14 Minimum Debonded Length of Longitudinal Reinforcement for Hybrid Columns – New Article for hybrid systems • Attachment DS12: Revised Article 8.10 Superstructure Capacity Design for Longitudinal Direction for SDC C and D – Revised Article for integral precast systems • Attachment DS13: Proposed Article 8.13 Joint Design for SDC A – New Article for SDC A precast bent cap connection design • Attachment DS14: Proposed Article 8.14—Joint Design for SDC B – New Article for SDC B precast bent cap connection design • Attachment DS15: Revised Article 8.15—Joint Design for SDCs C and D – Revision of current Article 8.13 for SDCs C and D to Article 8.15 for precast bent cap connection design • Attachment DS16: Revised Article 5.10.11.4.3—Column Connections – Revised Article to ensure AASHTO LRFD SGS is used for emulative precast bent cap-to-column connection design • Attachment DS17: Proposed Article 5.11.1.2.4—Moment Resisting Joints – Revised Article to ensure AASHTO LRFD SGS is used for emulative precast bent cap-to-column connection design Design Examples • Attachment DE1: SDC A Design Flow Chart – Flow chart for design of precast bent cap connections in SDC A Unpublished Material

105 • Attachment DE2: SDC A Design Example—Grouted Duct Connection – Design example for grouted duct connection in SDC A (minimum joint reinforcement) • Attachment DE3: SDC A Design Example—Cap Pocket Connection – Design example for cap pocket connection in SDC A (minimum joint reinforcement) • Attachment DE4: SDCs B, C, and D Design Flow Chart – Flow chart for design of precast bent cap connections in SDCs B, C, and D • Attachment DE5: SDC B Design Example—Grouted Duct Connection – Design example for grouted duct connection in SDC B (minimum joint reinforcement) • Attachment DE6: SDC B Design Example—Cap Pocket Connection – Design example for cap pocket connection in SDC B (minimum joint reinforcement) • Attachment DE7: SDCs C and D Design Example— Grouted Duct Connection – Design example for grouted duct connection in SDCs C and D (additional joint reinforcement) • Attachment DE8: SDCs C and D Design Example—Cap Pocket Connection – Design example for cap pocket connection in SDCs C and D (additional joint reinforcement) • Attachment DE9: SDCs C and D Design Example— Hybrid Connection – Design example for hybrid connection in SDCs C and D • Attachment DE10: SDCs C and D Design Example— Integral Connection – Design example for integral connection in SDCs C and D Construction Specifications • Attachment CS1: Proposed Article 8.13.8—Special Require- ments for Precast Bent Cap Connections (AASHTO LRFD Bridge Construction Specifications, 2nd Edition, 2004 with 2005–2009 Interims) – New Article that adds specifications for precast bent cap connections Example Connection Details • Attachment ECD1: SDC A—Grouted Duct Connection – Example bent cap details for grouted duct connection in SDC A • Attachment ECD2: SDC A—Cap Pocket Connection – Example bent cap details for cap pocket connection in SDC A • Attachment ECD3: SDC B—Grouted Duct Connection – Example bent cap details for grouted duct connection in SDC B (minimum joint reinforcement used) • Attachment ECD4: SDC B—Cap Pocket Connection – Example bent cap details for cap pocket connection in SDC B (minimum joint reinforcement used) • Attachment ECD5: SDCs B, C and D—Grouted Duct Connection – Example bent cap details for grouted duct connection in SDCs B, C, and D (additional joint reinforcement required) • Attachment ECD6: SDCs B, C and D—Cap Pocket Connection – Example bent cap details for cap pocket connection in SDCs B, C, and D (additional joint reinforcement required) • Attachment ECD7: SDCs B, C and D—Hybrid Connection – Example bent cap details for hybrid connection in SDCs B, C, and D • Attachment ECD8: SDCs B, C and D—Integral Connection – Example bent cap details for integral connection in SDCs B, C, and D Specimen Drawings • Attachment SD1: Nonintegral Prototype Drawings – Design drawings for nonintegral prototype structure • Attachment SD2: Cast-in-place Specimen Drawings – Design drawings for cast-in-place specimen • Attachment SD3: Grouted Duct Specimen Drawings – Design drawings for grouted duct specimen • Attachment SD4: Cap Pocket Full Ductility Specimen Drawings – Design drawings for cap pocket full ductility specimen • Attachment SD5: Cap Pocket Limited Ductility Specimen Drawings – Design drawings for cap pocket limited ductility specimen • Attachment SD6: Conventional Hybrid Specimen Drawings – Design drawings for conventional hybrid specimen • Attachment SD7: Concrete Filled Pipe Hybrid Specimen Drawings – Design drawings for concrete filled pipe hybrid specimen • Attachment SD8: Dual Steel Shell Hybrid Specimen Drawings – Design drawings for dual steel shell hybrid specimen • Attachment SD9: Integral Specimen Drawings – Design drawings for integral hybrid specimen Test Reports • Attachment TR1: Cast-in-place Specimen Test Report – Final report for experimental results from cast-in-place specimen

106 • Attachment TR2: Grouted Duct Specimen Test Report – Final report for experimental results from grouted duct specimen • Attachment TR3: Cap Pocket Full Ductility Specimen Test Report – Final report for experimental results from cap pocket full ductility specimen • Attachment TR4: Cap Pocket Limited Ductility Specimen Test Report – Final report for experimental results from cap pocket limited ductility specimen • Attachment TR5: Hybrid Specimens Test Report – Final report for experimental results from hybrid specimens • Attachment TR6: Integral Specimen Test Report – Final report for experimental results from integral specimen Corrugated Pipe Thickness • Attachment CPT1: Cap Pocket Corrugated Pipe Thickness Derivation – Derivation of required pipe thickness and design parameters Implementation Plan • Attachment IP1: NCHRP 12-74 Implementation Plan – New article presented recommended implementation plan to facilitate application of research results

Next: Abbreviations used without definitions in TRB publications »
Development of a Precast Bent Cap System for Seismic Regions Get This Book
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TRB’s National Cooperative Highway Research Program (NCHRP) Report 681: Development of a Precast Bent Cap System for Seismic Regions explores the development and validation of precast concrete bent cap systems for use throughout the nation’s seismic regions.

The report also includes a series of recommended updates to the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications, Guide Specification for LRFD Seismic Bridge Design, and AASHTO LRFD Bridge Construction Specifications that will provide safe and reliable seismic resistance in a cost-effective, durable, and constructible manner.

A number of deliverables are provided as attachments to NCHRP Report 681, including design flow charts, design examples, example connection details, specimen drawings, specimen test reports, and an implementation plan from the research agency’s final report. These attachments, which are only available online, are titled as follows:

Attachment DS—Design Specifications

Attachment DE—Design Examples

Attachment CS—Construction Specifications

Attachment ECD—Example Connection Details

Attachment SD —Specimen Drawings

Attachment TR—Test Reports

Attachment CPT—Corrugated Pipe Thickness

Attachment IP—NCHRP 12-74 Implementation Plan

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