Earth-filled wide-base hollow piers for excavation support

Xinli Wu, M. S. Wang, M. C. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tiebacks are frequently used to support deep excavations. Installations of tieback systems require certain favorable subsurface conditions as well as skill and experience. When the subsurface conditions are not suitable for tieback installation, an alternative bracing method is needed to achieve the same degree of effectiveness without the use of anchors. This paper presents a method of using earth-filled wide-base hollow piers to brace a deep excavation for construction of Penyun Hotel Building in Shenyang, China. The building covers 16,000 m2 and had a 100-m high main tower with a 24-m high apron building. The depth of excavation varied from 12.3 m to 16.5 m. The foundation site contained a 4.1-m thick fill of construction debris followed by a 0.7-m thick clay, a 5.5-m thick sand, and a very thick gravelly sandy soil stratum. The ground water table was near the foundation base. The design, construction, and performance of the bracing system are presented and discussed. It was concluded that the earth-filled wide-base hollow piers could effectively utilize a portion of unstable backfill to become a part of the retaining structure. As a result, a considerable saving in concrete material was realized. Therefore, it is an effective and economical method for bracing deep excavations when the subsurface condition are not favorable for installation of tieback systems.

Original languageEnglish (US)
Title of host publicationProceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95
Pages77-84
Number of pages8
Volume283
DOIs
StatePublished - Dec 1 2000
EventSessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95 - Denver, CO, United States
Duration: Aug 5 2000Aug 8 2000

Other

OtherSessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95
CountryUnited States
CityDenver, CO
Period8/5/008/8/00

Fingerprint

Piers
pier
Excavation
excavation
Earth (planet)
Hotels
backfill
Anchors
anchor
Debris
sandy soil
Towers
water table
Groundwater
Clay
fill
Sand
Concretes
Soils
clay

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Building and Construction

Cite this

Wu, X., Wang, M. S., & Wang, M. C. (2000). Earth-filled wide-base hollow piers for excavation support. In Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95 (Vol. 283, pp. 77-84) https://doi.org/10.1061/40500(283)7
Wu, Xinli ; Wang, M. S. ; Wang, M. C. / Earth-filled wide-base hollow piers for excavation support. Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95. Vol. 283 2000. pp. 77-84
@inproceedings{d00947c5336e48368a3c7e2f224a6e2e,
title = "Earth-filled wide-base hollow piers for excavation support",
abstract = "Tiebacks are frequently used to support deep excavations. Installations of tieback systems require certain favorable subsurface conditions as well as skill and experience. When the subsurface conditions are not suitable for tieback installation, an alternative bracing method is needed to achieve the same degree of effectiveness without the use of anchors. This paper presents a method of using earth-filled wide-base hollow piers to brace a deep excavation for construction of Penyun Hotel Building in Shenyang, China. The building covers 16,000 m2 and had a 100-m high main tower with a 24-m high apron building. The depth of excavation varied from 12.3 m to 16.5 m. The foundation site contained a 4.1-m thick fill of construction debris followed by a 0.7-m thick clay, a 5.5-m thick sand, and a very thick gravelly sandy soil stratum. The ground water table was near the foundation base. The design, construction, and performance of the bracing system are presented and discussed. It was concluded that the earth-filled wide-base hollow piers could effectively utilize a portion of unstable backfill to become a part of the retaining structure. As a result, a considerable saving in concrete material was realized. Therefore, it is an effective and economical method for bracing deep excavations when the subsurface condition are not favorable for installation of tieback systems.",
author = "Xinli Wu and Wang, {M. S.} and Wang, {M. C.}",
year = "2000",
month = "12",
day = "1",
doi = "10.1061/40500(283)7",
language = "English (US)",
isbn = "9780784405000",
volume = "283",
pages = "77--84",
booktitle = "Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95",

}

Wu, X, Wang, MS & Wang, MC 2000, Earth-filled wide-base hollow piers for excavation support. in Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95. vol. 283, pp. 77-84, Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95, Denver, CO, United States, 8/5/00. https://doi.org/10.1061/40500(283)7

Earth-filled wide-base hollow piers for excavation support. / Wu, Xinli; Wang, M. S.; Wang, M. C.

Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95. Vol. 283 2000. p. 77-84.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Earth-filled wide-base hollow piers for excavation support

AU - Wu, Xinli

AU - Wang, M. S.

AU - Wang, M. C.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - Tiebacks are frequently used to support deep excavations. Installations of tieback systems require certain favorable subsurface conditions as well as skill and experience. When the subsurface conditions are not suitable for tieback installation, an alternative bracing method is needed to achieve the same degree of effectiveness without the use of anchors. This paper presents a method of using earth-filled wide-base hollow piers to brace a deep excavation for construction of Penyun Hotel Building in Shenyang, China. The building covers 16,000 m2 and had a 100-m high main tower with a 24-m high apron building. The depth of excavation varied from 12.3 m to 16.5 m. The foundation site contained a 4.1-m thick fill of construction debris followed by a 0.7-m thick clay, a 5.5-m thick sand, and a very thick gravelly sandy soil stratum. The ground water table was near the foundation base. The design, construction, and performance of the bracing system are presented and discussed. It was concluded that the earth-filled wide-base hollow piers could effectively utilize a portion of unstable backfill to become a part of the retaining structure. As a result, a considerable saving in concrete material was realized. Therefore, it is an effective and economical method for bracing deep excavations when the subsurface condition are not favorable for installation of tieback systems.

AB - Tiebacks are frequently used to support deep excavations. Installations of tieback systems require certain favorable subsurface conditions as well as skill and experience. When the subsurface conditions are not suitable for tieback installation, an alternative bracing method is needed to achieve the same degree of effectiveness without the use of anchors. This paper presents a method of using earth-filled wide-base hollow piers to brace a deep excavation for construction of Penyun Hotel Building in Shenyang, China. The building covers 16,000 m2 and had a 100-m high main tower with a 24-m high apron building. The depth of excavation varied from 12.3 m to 16.5 m. The foundation site contained a 4.1-m thick fill of construction debris followed by a 0.7-m thick clay, a 5.5-m thick sand, and a very thick gravelly sandy soil stratum. The ground water table was near the foundation base. The design, construction, and performance of the bracing system are presented and discussed. It was concluded that the earth-filled wide-base hollow piers could effectively utilize a portion of unstable backfill to become a part of the retaining structure. As a result, a considerable saving in concrete material was realized. Therefore, it is an effective and economical method for bracing deep excavations when the subsurface condition are not favorable for installation of tieback systems.

UR - http://www.scopus.com/inward/record.url?scp=58749111659&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58749111659&partnerID=8YFLogxK

U2 - 10.1061/40500(283)7

DO - 10.1061/40500(283)7

M3 - Conference contribution

SN - 9780784405000

VL - 283

SP - 77

EP - 84

BT - Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95

ER -

Wu X, Wang MS, Wang MC. Earth-filled wide-base hollow piers for excavation support. In Proceedings of Sessions of Geo-Denver 2000 - Soil-Cement and Other Construction Practices in Geotechnical Engineering, GSP 95. Vol. 283. 2000. p. 77-84 https://doi.org/10.1061/40500(283)7