accelerated load testing of seismic expansion joints for the new san francisco oakland bay bridge
Download
Skip this Video
Download Presentation
HVSIA Annual Meeting, San Jose, Costa Rica August 21-23, 2013

Loading in 2 Seconds...

play fullscreen
1 / 35

HVSIA Annual Meeting, San Jose, Costa Rica August 21-23, 2013 - PowerPoint PPT Presentation


  • 111 Views
  • Uploaded on

Accelerated Load Testing of Seismic Expansion Joints for the New San Francisco – Oakland Bay Bridge. David Jones, John Harvey and Rongzong Wu. HVSIA Annual Meeting, San Jose, Costa Rica August 21-23, 2013. Bridge Schematic. Introduction Study objective and workplan

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'HVSIA Annual Meeting, San Jose, Costa Rica August 21-23, 2013' - morela


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
accelerated load testing of seismic expansion joints for the new san francisco oakland bay bridge

Accelerated Load Testing of Seismic Expansion Joints for the New San Francisco – Oakland Bay Bridge

David Jones, John Harvey and Rongzong Wu

HVSIA Annual Meeting, San Jose, Costa Rica

August 21-23, 2013

summary
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
introduction
Introduction
  • Background
    • Existing bridge built in 1936
    • Damaged in 1989 earthquake
    • Retrofit too expensive
    • New bridge designed
  • Bridge design
    • Three different structures
    • New joint design to link structures
      • Design for seismic activity
      • Individual lane maintenance
summary1
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
study objective and workplan
Study Objective and Workplan
  • Objectives
    • Identify any fatal flaws related to vehicle trafficking
    • Determine how the joint will fail under vehicle trafficking
    • Seismic testing NOT part of workplan
  • Workplan
    • Construction of test structure
    • Phased approach to testing (7 phases)
summary2
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
test section construction
Test Section Construction
  • Concrete structure to same dimensions
  • Prototype deck joint
summary3
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
instrumentation
Instrumentation
  • Comprehensively instrumented
    • Temperatures
    • Vertical deflection
    • Longitudinal strain
    • Bolt rotation
    • Profile
summary4
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
results
Results
  • Phase 1.1: Fatal flaw assessment
    • No apparent damage
    • Vertical settlement was 0.2 mm
    • No permanent deformation
    • Deflection of 0.9 mm on deck
    • Vertical deflection of 0.1 mm on bolts
    • Longitudinal strain of 60 µ-strain on deck
results1
Results
  • Phase 1.2: Load response
    • Linear relationship
    • Maximum deflection of 2.3 mm
    • Maximum strain of 135 µ-strain
results2
Results
  • Phase 1.2: Load response
    • Linear relationship
    • Maximum deflection of 2.3 mm
    • Maximum strain of 135 µ-strain
  • Phase 1.3: Effect of wander
    • No effect
results3
Results
  • Phase 2.1: Testing on edge of steel plate
    • No difference in trends compared to center
    • Higher deflections and strains
    • Some damage to Trelleborg unit
results4
Results
  • Phase 3.1: Impact loading on edge
    • No effect at 60kN
  • Phase 3.2: Impact loading on edge
    • No significant effect at 80kN and 100kN
results5
Results
  • Phase 3.1: Impact loading on edge
    • No effect at 60kN
  • Phase 3.2: Impact loading on edge
    • No significant effect by impact load
  • Phase 3.3: Heavy loading
    • No structural damage
    • Some damage to Trelleborg unit
summary5
Introduction

Study objective and workplan

Test section construction

Instrumentation

Results

Conclusions and implementation

Summary
conclusions and implementation
Conclusions and Implementation
  • Summary
    • No fatal flaws in design
    • No structural damage
    • Some wear to Trelleborg
  • Implementation
    • Considered appropriate for use
  • Other findings
    • Role of APT in testing bridge components
thank you
Thank-you

[email protected]

www.ucprc.ucdavis.edu

ad