Results 61 to 70 of about 728 (177)

Suitability analysis of prefabricated underground utility tunnels crossing active ground fissures

Alexandria Engineering Journal
The city of Xi’an, Shaanxi, China, is the transportation hub in western China, which has planned to establish an underground utility tunnel system. However, this city has faced a series of fissure disasters with a wide area of 250 km2, which is hazardous
Qiang Xu, Lei Qiu, Jianbing Peng, Chaoyu Bai, Shuguang Chang, Quanzhong Lu, Wenyang Li, Junyan Zhao, Haoran Chen, Feifan Chen   +9 more
doaj   +1 more source

A New Multiconstraint Method for Determining the Optimal Cable Stresses in Cable-Stayed Bridges

The Scientific World Journal, 2014
Cable-stayed bridges are one of the most popular types of long-span bridges. The structural behaviour of cable-stayed bridges is sensitive to the load distribution between the girder, pylons, and cables.
B. Asgari, S. A. Osman, A. Adnan
doaj   +1 more source

Study on Roof‐Control Technology for Gob‐Side Entry Retaining Under Composite Roofs

Energy Science &Engineering, EarlyView.
This study develops a roof‐control technology system for gob‐side entry retaining under composite roofs. By integrating field measurements, theoretical analysis, and numerical simulation, it reveals the spatiotemporal evolution of the plastic zone and proposes a targeted support method, providing theoretical and practical guidance for safe and ...
Dong Li, Yujiang Zhang, Yunlou Du, Haodong Zheng, Baoji Yang   +4 more
wiley   +1 more source

Studies on the Pre-Hinged Pretensioning Method [PDF]

, 1974
departmental bulletin ...
Watanabe, Akira, Karmacharya, M.R.
core   +2 more sources

Knee joint line obliquity alters lateral meniscal root tension, tibiofemoral subluxation and compartment‐specific contact pressures

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose The objective was to measure effects of joint line obliquity (JLO) on meniscus posterior root tension, tibiofemoral subluxation and contact pressures. It was hypothesised that a medial JLO would increase medial meniscal (MM) root tension, medial tibiofemoral subluxation and medial compartment contact pressure, and vice versa for ...
Shuntaro Nejima, Petra Bonacic‐Bartolin, Simon Ball, Andy Williams, Richard van Arkel, Andrew Amis   +5 more
wiley   +1 more source

The importance of pre-tensioning cable bolts used to reinforce of arch yielding support

E3S Web of Conferences, 2018
Widespread in Polish hard coal mining, cable bolts are used to reinforce the arch yielding support of roadways. This article attempts to prove that change in approach to long bolting technology can bring significant benefits in terms of improving the ...
Rak Zbigniew, Cieślik Jerzy, Stasica Jerzy, Dvořák Pavel   +3 more
doaj   +1 more source

Calculation of Reasonable Tension Value for Longitudinal Connecting Reinforcement of CRTSII Slab Ballastless Track

Applied Sciences, 2018
There is confusion in the original design concept for the tensioning of longitudinally connected reinforcement of the CRTSII (China Railway Track System) slab ballastless track.
Long Chen, Jinjie Chen, Jianxi Wang
doaj   +1 more source

Influence of Hybrid Co‐wrapped Yarn Structure on the Energy Absorption and Crack Propagation Resistance of Fiber‐Reinforced Composites

Polymer Composites, EarlyView.
Helical wrapping of polyamide around E‐glass fibres deflects and bridges impact‐driven cracks, arresting damage that would otherwise propagate catastrophically in conventional side‐by‐side hybrid yarns. ABSTRACT Hybrid cowrapped (CW) yarns were engineered to enhance the impact resistance and damage tolerance of fiber‐reinforced composites.
Nereida G. Ortiz‐Leyva, Abdul Jabbar, Prasad Potluri, Muhammad Tausif   +3 more
wiley   +1 more source

Damage detection of carbon fibers in filament winding machines using an electrical resistance method

, 2017
The aim of this research project is to detect the presence of fiber damage which occurs during the pretensioning of carbon fibers during the Filament Winding (FW) manufacturing process.
TOPTAŞ, ERSİN, Nihat Akkuş, Ersin Toptaş, AKKUŞ, NİHAT   +3 more
core   +1 more source

STRESS-STRAIN STATE OF SLIP-CRITICAL CONNECTIONS IN METAL STRUCTURES, WITH REGARD TO THE SPECIFICS OF BOLT TENSION CONTROL

International Journal for Computational Civil and Structural Engineering
The load-bearing capacity of a slip-critical connection depends on two factors: the bolt tension force and the friction coefficient between the coupled surfaces.
Andrey Vasilkin, Georgiy Zubkov
doaj   +1 more source