語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Effects of Excavation at Block 37 on...
~
Ayoubian, Alireza.
FindBook
Google Book
Amazon
博客來
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis./
作者:
Ayoubian, Alireza.
面頁冊數:
500 p.
附註:
Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
Contained By:
Dissertation Abstracts International76-10B(E).
標題:
Geotechnology. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3705210
ISBN:
9781321780857
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis.
Ayoubian, Alireza.
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis.
- 500 p.
Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
Thesis (Ph.D.)--Northwestern University, 2015.
The freight tunnels in Chicago were constructed approximately 50 feet below ground surface in early 1900s. The tunnels were hand-excavated and supported with steel ribs and wood laggings during excavation. The final liner was formed by placing unreinforced concrete against the wood lagging. Currently, these tunnels are used to house sensitive utilities. Any future deep excavations or tunnels in downtown Chicago will cause changes in stresses in the freight tunnels, and any impact on the tunnels can only be investigated by knowing the existing stresses. This thesis provides a sound understanding of the existing internal forces and stresses in the final liner of freight tunnels, which was developed by conducting numerical modeling and analytical investigation, so that the impact of future constructions on these tunnels can be properly evaluated.
ISBN: 9781321780857Subjects--Topical Terms:
1018558
Geotechnology.
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis.
LDR
:03367nmm a2200301 4500
001
2066990
005
20160321080109.5
008
170521s2015 ||||||||||||||||| ||eng d
020
$a
9781321780857
035
$a
(MiAaPQ)AAI3705210
035
$a
AAI3705210
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Ayoubian, Alireza.
$3
3181846
245
1 0
$a
Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis.
300
$a
500 p.
500
$a
Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
500
$a
Adviser: Richard J. Finno.
502
$a
Thesis (Ph.D.)--Northwestern University, 2015.
520
$a
The freight tunnels in Chicago were constructed approximately 50 feet below ground surface in early 1900s. The tunnels were hand-excavated and supported with steel ribs and wood laggings during excavation. The final liner was formed by placing unreinforced concrete against the wood lagging. Currently, these tunnels are used to house sensitive utilities. Any future deep excavations or tunnels in downtown Chicago will cause changes in stresses in the freight tunnels, and any impact on the tunnels can only be investigated by knowing the existing stresses. This thesis provides a sound understanding of the existing internal forces and stresses in the final liner of freight tunnels, which was developed by conducting numerical modeling and analytical investigation, so that the impact of future constructions on these tunnels can be properly evaluated.
520
$a
The axial forces, bending moments and internal normal stresses at the final liner of typical freight tunnels in Chicago were calculated using finite element analyses and represent the most realistic existing stresses in the tunnels at their present condition. The analyses addressed the long term loads acting on the tunnels as a result of consolidation and seepage forces (due to leakage of water through tunnel joints), construction of the initial support and final liner, and the amount of ground stress release during excavation. The amount of ground stress release was calculated utilizing finite element modeling. Construction of the freight tunnels according to the information available in the literature and the field data were incorporated in the numerical analyses.
520
$a
Development of the Block 37 in downtown Chicago included construction of a building and two tunnel connections, the State and Dearborn Connections. Three-dimensional finite element analyses were conducted to study the impact of these activities on the freight tunnels. The existing axial forces and bending moments, which were computed based on finite element analyses, were used to define the pre-construction condition of the tunnels in the analyses. During excavation of the Dearborn Connection, the freight tunnel underlying the excavation zone developed a 17-foot-long longitudinal crack at its crown and walls. The results of the analyses explained the cracking of the freight tunnel and confirmed the applicability of the calculated pre-construction axial forces, bending moments and internal normal stresses.
590
$a
School code: 0163.
650
4
$a
Geotechnology.
$3
1018558
650
4
$a
Civil engineering.
$3
860360
690
$a
0428
690
$a
0543
710
2
$a
Northwestern University.
$b
Civil and Environmental Engineering.
$3
1021864
773
0
$t
Dissertation Abstracts International
$g
76-10B(E).
790
$a
0163
791
$a
Ph.D.
792
$a
2015
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3705210
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9299858
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入