Results 41 to 50 of about 381 (175)

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +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

Low‐Cost Friction‐Based Force‐Limiting Connection With Reduced Sensitivity to Machining Tolerances and Accelerated Repairability

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper presents a novel yet practical friction‐based structural component design for low‐damage earthquake‐resistant structures. The proposed connection design is based on a conventional slotted‐bolted configuration with the novelty being the use of loose steel washer plates to establish the friction‐sliding interface.
Kaixin Chen, Georgios Tsampras, Chung‐Che Chou, Huang‐Zuo Lin, Chi‐Jeng Wu, Alvaro Córdova, Chia‐Ming Uang, Shih‐Ho Chao   +7 more
wiley   +1 more source

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

Position Transmission Control in Tendon–Sheath Mechanisms: A Critical Review and a Promising Solution

SmartBot, EarlyView.
Tendon‐sheath mechanisms are widely used in various robotic systems for remote position transmission, including aerospace vehicles, flexible rescue robots, dexterous robotic hands, exoskeleton robots, soft wearable devices, industrial robots, and flexible surgical robots.
Jiaqi Li, Qian Gao
wiley   +1 more source

Estimated assessment of the static position of the hull with a change in the pre-tensioning force of the tracks [PDF]

E3S Web of Conferences
The article proposes a method for calculating the static position of the machine body. The mathematical model of the running gear is given. The dependence of the position of the center of mass in height relative to the ground on the pre-tension forces ...
Bazhukov Artem, Rolle Vladimir, Stepina Polina, Akhmetshin Stanislav, Yakushev Adel, Orekhovskaya Alexandra   +5 more
doaj   +1 more source

Modeling the response of UHPC shear‐critical beams: Integrating nonlinear finite element analysis and artificial neural network

Structural Concrete, EarlyView.
Abstract An analytical framework suited for the analysis of shear‐critical ultra‐high performance concrete (UHPC) members is presented. The numerical methodology utilizes a nonlinear finite element analysis formulation integrated with an artificial neural network (ANN) that characterizes the UHPC tension response based on its mix design. In addition, a
Amjad Diab, Anca Ferche
wiley   +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

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source