Field Tests of 3D Laser Scanning in Urban Excavation

Filho, J. N. Oliveira; Su, Y. Y.; Song, Hwayeon; Liu, Liang Y.; Hashash, Youssef M. A.

doi:10.1061/40794(179)54

Cited by 3 publications

(1 citation statement)

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“…In recent years, many studies about the applications of laser scanning technology on the foundation pit project is carried out, but most are focused on the management of the progress of the project. Reference [9] uses laser scanner to scan a foundation pit project. During the construction of the pit for up to five months, record the excavation condition of the pit by laser scanning technology.…”

Section: Introductionmentioning

confidence: 99%

Development of a Three-Dimensional Modeling Method for Monitoring Overall Foundation Pit Deformation Based on Terrestrial Laser Scanning

Xie

Zhu

2015

AMM

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Concrete diaphragm wall is widely used in deep foundation pit projects in city. Its lateral deformation is an important item in the deformation monitoring of the retaining structure of foundation pit. Traditional monitoring techniques for concrete diaphragm wall deformation collect data only from several sections, failing to understand the overall foundation pit deformation. Taking the north pit of Huaihai road station on Shanghai Metro Line 13 as an example, this study measures overall deformation by means of terrestrial laser scanning. Methods of data collection and data process will be introduced. A three-dimensional modeling algorithm using point cloud data of foundation pit is proposed so that the overall model of the concrete diaphragm wall can be got. And finally the overall deformation can be got by comparing the model of different periods.

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Section: Introductionmentioning

confidence: 99%

Development of a Three-Dimensional Modeling Method for Monitoring Overall Foundation Pit Deformation Based on Terrestrial Laser Scanning

Xie

Zhu

2015

AMM

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Viability Assessment of Terrestrial LiDAR for Retaining Wall Monitoring

Laefer¹,

Lennon

2008

GeoCongress 2008

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ABSTRACT:The decreased cost and increased processing speed for terrestrial laser scanners have made this remote sensing procedure much more attractive. The approach has two major advantages over traditional surveying: (1) a registration of the survey instrument independent of any physical benchmarks. Thus, if the entire area is experiencing subsidence, the quality of the final results will not be compromised as they will be absolute measurements, as opposed to relative ones because they are based on a global positioning registration; (2) the ability of the technologies to highlight cracks in masonry. Unfortunately, despite major advances in the equipment and software, the technology is arguably not fully ready for the task of automated retaining wall monitoring. This paper will outline the challenges that remain with respect to registration and displacement monitoring.

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