Results 81 to 90 of about 107,600 (262)

Ground movements due to excavation in clay: physical and analytical models [PDF]

, 2010
In view of the recent catastrophes associated with deep excavations, there is an urgent need to provide vital guidelines on the design of the construction process.

core   +2 more sources

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

Centrifuge technology

, 2002
Geotechnical centrifuge modelling is used for a wide range of investigations, which cover almost the whole field of geotechnical engineering problems. Independently of the question to be answered, the basis of the centrifuge modelling technique is the ...
Laue, Jan,
core  

Intelligent inversion analysis of dilatancy angle of surrounding rock based on the force of negative Poisson's ratio anchor cable

Deep Underground Science and Engineering, EarlyView.
An intelligent inversion framework estimates the dilatancy angle of the surrounding rock from negative Poisson's ratio (NPR) anchor cable force histories. Numerical tunnel‐excavation simulations generate force data across a controlled dilatancy‐angle range, which are mapped to the target parameter using a sequential convolutional neural network (CNN ...
Li Cui, Zhihao Sun, Lei Wang, Zhenmin Qi, Jianjun Ma, Xiaoming Sun   +5 more
wiley   +1 more source

An Intensity Measure‐Based Methodology for Ground Motion Orientation in Seismic Structural Assessment

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT In current dynamic time history assessment protocols, ground motion recordings are mostly oriented along fixed sensor directions. Consequently, the orientation of the principal resultant of rupture energy, which may control the maximum structural demand, remains undefined, precluding consistent correlation with physically detrimental ...
Santiago Londono‐Lopez, Raffaele Cucuzza, Fabrizio Mollaioli, Giuseppe Carlo Marano, Marco Domaneschi   +4 more
wiley   +1 more source

Influence of erosion voids and traffic loads on buried large-diameter reinforced concrete pipes

Underground Space
Geotechnical centrifuge tests were conducted to examine the influence of invert voids and surface traffic loads on 1400 mm diameter reinforced concrete pipes buried with a shallow soil cover depth of 700 mm.
Ming Xu, Dawei Shen
doaj   +1 more source

Influence of fabric anisotropy on seismic responses of foundations

Journal of Rock Mechanics and Geotechnical Engineering, 2015
Earthquakes, as one of the well-known natural disasters, are highly destructive and unpredictable. Foundation failure due to liquefaction induced by earthquakes can cause casualties as well as significant damage to the building itself.
Jin Qin, Xiangwu Zeng, Haiyan Ming
doaj   +1 more source

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Development and performance testing of centrifugal model test equipment for frozen soil

Yantu gongcheng xuebao
The centrifugal model test is an effective method to solve the problem of frozen soil engineering in a long time span. But the refrigeration end of the existing centrifugal model test devices can only control the temperature boundary, and can not form a ...
ZHOU Jie 1, 2, GUO Zhongqiu 1, SHI Zhenming 1, 2, LIU Chengjun 1, ZHOU Huade 1, BAN Chao 1
doaj   +1 more source