서브메뉴
검색
Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105703
- ISBN
- 9798263308001
- DDC
- 620
- 서명/저자
- Thermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 396 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Stark, Timothy D.
- 학위논문주기
- Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2024.
- 초록/해제
- 요약Thermal integrity profile (TIP) and crosshole sonic logging (CSL) tests were performed on three test drilled shafts at three different locations in Illinois with pre-planned flaws installed to determine which technology is effective at identifying installed flaws. Using preliminary analysis methods, TIP testing was found to be more effective than CSL in identifying installed flaws outside the rebar cage. Conversely, CSL was found to be better than TIP at identifying installed flaws at the bottom or toe of the drilled shaft. TIP results at one-half the time to peak temperature were found to provide better identification of flaws than at the time to peak temperature. However, this study also shows that TIP results could provide the best identification of flaws at the end of the acceleration stage (stage 3) of concrete hydration, which has the highest rate of temperature increase with time and happens to be at one-quarter of the time to peak temperature. Concrete coring near the rebar cage was shown to provide better identification of the flaws than coring at the center of the drilled shaft because the flaws tend to be pushed toward the perimeter of the drilled shaft during concrete placement. The findings of this study were used to create a decision flowchart that can be used to assist practicing engineers in the selection of the most appropriate nondestructive testing for drilled shafts in Illinois. In addition, modifications to the existing TIP and CSL specifications were proposed. Level 2 analysis was also performed on all three test drilled shafts using superimposed construction logs and concrete yield data with hyperbolic correction for shaft ends. It was found in this study that current TIP testing interpretation methods don't provide a reference temperature to be compared with those measured from TIP testing. Therefore, a numerical model was constructed using COMSOL Multiphysics® software package to numerically model concrete heat of hydration for these three drilled shafts during curing. The 3D numerical results were validated and matched the temperatures at one-half the time and full time to the peak temperature measured by the TIP wires for all three drilled shafts. Additionally, measured temperatures with time at different depths in all drilled shafts also match the modeled temperatures with time profiles. The pre-planned flaws installed in the three test drilled shafts, which consist of soil inclusions and tremie pipe raises, were successfully modeled in this study and are reflected in the measured TIP temperature data. Concrete heat of hydration of drilled shafts was found to be insensitive to soil type and its initial temperature. The concept of mass concrete is discussed in this chapter as well in terms of maximum temperature at the center of large drilled shafts and the difference between the temperature at the center and near the soil concrete interface based on the guidelines from ACI and IDOT. It was shown that the initial concrete temperature has the largest influence on the peak temperature at the center of the drilled shaft and on the maximum temperature difference. The validated 3D numerical model developed herein was used to create a user-friendly application to assess engineers in the interpretation of TIP data for future drilled shafts. This application provides a reference temperature for measured TIP data to be compared with the measured temperature along with the measured bottom roll-off temperature profiles.
- 일반주제명
- Engineering
- 일반주제명
- Energy
- 일반주제명
- Materials science
- 키워드
- Drilled shafts
- 키워드
- Deep foundation
- 기타저자
- University of Illinois at Urbana-Champaign Civil & Environmental Eng
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2024 us c eng d■001000017361082
■00520260202105703
■006m o d
■007cr#unu||||||||
■020 ▼a9798263308001
■035 ▼a(MiAaPQ)AAI32409893
■035 ▼a(MiAaPQ)124187
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a620
■1001 ▼aIdries, Abedalqader Ahmad Abedalqader.
■24510▼aThermal Integrity Profiling (TIP) and Crosshole Sonic Logging (CSL) Testing for Drilled Shafts
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a396 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Stark, Timothy D.
■5021 ▼aThesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2024.
■520 ▼aThermal integrity profile (TIP) and crosshole sonic logging (CSL) tests were performed on three test drilled shafts at three different locations in Illinois with pre-planned flaws installed to determine which technology is effective at identifying installed flaws. Using preliminary analysis methods, TIP testing was found to be more effective than CSL in identifying installed flaws outside the rebar cage. Conversely, CSL was found to be better than TIP at identifying installed flaws at the bottom or toe of the drilled shaft. TIP results at one-half the time to peak temperature were found to provide better identification of flaws than at the time to peak temperature. However, this study also shows that TIP results could provide the best identification of flaws at the end of the acceleration stage (stage 3) of concrete hydration, which has the highest rate of temperature increase with time and happens to be at one-quarter of the time to peak temperature. Concrete coring near the rebar cage was shown to provide better identification of the flaws than coring at the center of the drilled shaft because the flaws tend to be pushed toward the perimeter of the drilled shaft during concrete placement. The findings of this study were used to create a decision flowchart that can be used to assist practicing engineers in the selection of the most appropriate nondestructive testing for drilled shafts in Illinois. In addition, modifications to the existing TIP and CSL specifications were proposed. Level 2 analysis was also performed on all three test drilled shafts using superimposed construction logs and concrete yield data with hyperbolic correction for shaft ends. It was found in this study that current TIP testing interpretation methods don't provide a reference temperature to be compared with those measured from TIP testing. Therefore, a numerical model was constructed using COMSOL Multiphysics® software package to numerically model concrete heat of hydration for these three drilled shafts during curing. The 3D numerical results were validated and matched the temperatures at one-half the time and full time to the peak temperature measured by the TIP wires for all three drilled shafts. Additionally, measured temperatures with time at different depths in all drilled shafts also match the modeled temperatures with time profiles. The pre-planned flaws installed in the three test drilled shafts, which consist of soil inclusions and tremie pipe raises, were successfully modeled in this study and are reflected in the measured TIP temperature data. Concrete heat of hydration of drilled shafts was found to be insensitive to soil type and its initial temperature. The concept of mass concrete is discussed in this chapter as well in terms of maximum temperature at the center of large drilled shafts and the difference between the temperature at the center and near the soil concrete interface based on the guidelines from ACI and IDOT. It was shown that the initial concrete temperature has the largest influence on the peak temperature at the center of the drilled shaft and on the maximum temperature difference. The validated 3D numerical model developed herein was used to create a user-friendly application to assess engineers in the interpretation of TIP data for future drilled shafts. This application provides a reference temperature for measured TIP data to be compared with the measured temperature along with the measured bottom roll-off temperature profiles.
■590 ▼aSchool code: 0090.
■650 4▼aEngineering
■650 4▼aEnergy
■650 4▼aMaterials science
■653 ▼aDrilled shafts
■653 ▼aDeep foundation
■653 ▼aThermal integrity profile
■653 ▼aCrosshole sonic logging
■653 ▼aNon-destructive testing
■653 ▼aConcrete heat of hydration
■690 ▼a0543
■690 ▼a0794
■690 ▼a0537
■690 ▼a0791
■71020▼aUniversity of Illinois at Urbana-Champaign▼bCivil & Environmental Eng.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0090
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361082▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
Preview
Export
ChatGPT Discussion
AI Recommended Related Books
Подробнее информация.
- Бронирование
- не существует
- моя папка
- Первый запрос зрения
- Non-Book Loan Application
- Nighttime Book Loan Application
Available after logging in.


