contributor author | Yong-Xia Wu;Hai-Min Lyu;Jie Han;Shui-Long Shen | |
date accessioned | 2019-06-08T07:24:14Z | |
date available | 2019-06-08T07:24:14Z | |
date issued | 2019 | |
identifier other | %28ASCE%29GT.1943-5606.0002045.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4257041 | |
description abstract | This case study presents an investigation on building settlement induced by dewatering for a deep excavation constructed in a deposit in Tianjin, China. The excavation site is located in the Tianjin urban center, around which there are many existing buildings. Geological conditions at the site involve a multiaquifer system with one phreatic aquifer over three confined aquifers. To maintain the stability of the bottom of the excavation, a cutoff wall was used to block groundwater seepage with large diameter wells to lower the groundwater level. Field instrumentation was installed during construction to monitor (1) the quantity of withdrawn groundwater, (2) the groundwater head, and (3) the settlement of surrounding buildings. The field observations yielded the following results and implications: (1) pumping of groundwater could lead to large building settlement and a large area of ground settlement; (2) most of the settlement caused by dewatering did not rebound; (3) the cutoff wall played a significant role in reducing the building settlement during dewatering; and (4) the dewatering-on-demand procedure should be implemented during excavation. | |
publisher | American Society of Civil Engineers | |
title | Dewatering–Induced Building Settlement around a Deep Excavation in Soft Deposit in Tianjin, China | |
type | Journal Article | |
journal volume | 145 | |
journal issue | 5 | |
journal title | Journal of Geotechnical and Geoenvironmental Engineering | |
identifier doi | doi:10.1061/(ASCE)GT.1943-5606.0002045 | |
page | 05019003 | |
tree | Journal of Geotechnical and Geoenvironmental Engineering:;2019:;Volume (0145):;issue:005 | |
contenttype | Fulltext | |