Tunnelling and Underground Space Technology
Papers 5338
1 page of 534 pages (5,338 results)
#1Chun-xin Zhang (NU: Nanjing University)
#2Hong-Hu Zhu (NU: Nanjing University)H-Index: 23
Last. Wei Liu (NU: Nanjing University)
view all 5 authors...
Abstract null null Uplift of underground pipelines is frequently encountered in urban tunneling and landslide-prone areas, seriously affecting their structural integrity and serviceability. However, the uplift resistance of pipelines and the failure modes of surrounding soils under permanent ground deformation have not been fully understood. In numerical simulations, the element distortion phenomenon significantly restricts the application of mesh-based numerical methods in addressing such issue...
#1Fanyan Meng (Hunan University)H-Index: 5
#2Renpeng Chen (Hunan University)H-Index: 25
Last. Yuan Liu (Hunan University)H-Index: 5
view all 6 authors...
Abstract null null Excavation nearby an existing tunnel is frequently encountered in underground construction, especially in congested urban areas. Essentially, the responses of the ground and existing tunnel to the nearby excavation is a complex soil-structure interaction problem. In this paper, extensive earlier contributions to this problem are organized according to their subject matters, including field observation, physical modeling, numerical simulation, and analytical method. This paper ...
#1Shaokun Ma (Xida: Guangxi University)H-Index: 3
#2Duan Zhibo (Xida: Guangxi University)H-Index: 1
Last. Yu ShaoH-Index: 5
view all 5 authors...
Abstract null null The soil layers that are traversed by urban tunnel are usually complex. The failure mode of the tunnel face under complex soil conditions with different layers plays a key role for the construction and design of the tunnel. In order to investigate the response of the excavation face under different soil conditions and buried depth of the tunnels, two different types of transparent soils are used in the present paper to carry out six large-scale physical model tests by self-des...
#1Xia Yuqing (China University of Geosciences (Wuhan))H-Index: 1
#2Nan Jiang (Jianghan University)H-Index: 1
Last. Wu Tingyao (China University of Geosciences (Wuhan))
view all 6 authors...
Abstract null null Reinforced concrete pipelines with gasketed bell-and-spigot joints are widely spread in urban areas. The jointed concrete pipe is vulnerable subjected to blasting vibration induced by adjacent tunnel blasting excavation, which may lead to serious consequences to residents and tunnel construction. However, research on the dynamic response of jointed pipe under impact loads is vague. For analyzing the impact of blasting vibration on adjacent buried reinforced concrete pipelines ...
#1Zhen Huang (Xida: Guangxi University)H-Index: 1
#2Chenlong Zhang (Xida: Guangxi University)H-Index: 1
Last. Qixuan Zhu (Xida: Guangxi University)
view all 5 authors...
Abstract null null Joints are the weakest parts of prefabricated tunnels, and it is important to consider the material nonlinearities, mechanical properties and complex behaviours of joints in structural design. Based on existing joints, this paper proposes the design of three new types of joints for fabricated rectangular tunnels, including self-weight mortise and tenon joints, bolt mortise and tenon joints and steel plate mortise and tenon joints. To explore the mechanical behaviour and damage...
#1Hamed Zoghi (Sharif University of Technology)
#2Saeid Jafari (Sharif University of Technology)H-Index: 10
Last. Ali Kazemipour (Sharif University of Technology)H-Index: 2
view all 5 authors...
Abstract null null According to the copious research conducted on emergency ventilation in tunnel during fire, when plug-holing and boundary layer separation occur, the actual smoke extraction efficiency is unable to satisfy the emergency ventilation design criteria in tunnels. By and large, so necessary and precious is it that a novel method would be presented in order to improve smoke extraction efficiency of ventilation systems with vertical mid-tunnel shafts to provide visibility and possibi...
#1Leandro R. Alejano (Virginia Tech College of Natural Resources and Environment)H-Index: 1
#2Gabriel Walton (Colorado School of Mines)H-Index: 14
Last. S. Gaines (NRCan: Natural Resources Canada)
view all 3 authors...
Abstract null null When carrying out compressive tests on rock specimens, a stress plateau is typically attained following peak strength within a strain range a few times larger than the strain at peak strength. This stress level is commonly known as residual strength. A large database of these tests on granitic rock specimens has been compiled and analyzed in detail with the aim of improving understanding of the residual strength of this type of rock. It is observed that physical scale does not...
Top fields of study
Civil engineering
Geotechnical engineering
Rock mass classification
Structural engineering