Results 11 to 20 of about 370 (215)

Distributed displacement estimation of pre-stressed concrete beams with random cracks using long-gauge strain sensing

open access: yesCase Studies in Construction Materials, 2022
Large pre-stressed concrete structures are usually confronted with random cracks and down-warping. Aiming to these structure diseases, a strategy for estimating distributed displacement of pre-stressed concrete beams with random cracks based on long ...
Zhiheng Ma, Wan Hong
doaj   +1 more source

Structural reliability of pre-stressed concrete containments [PDF]

open access: yesNuclear Engineering and Design, 2017
This paper presents probabilistic analysis of structural capacity of pre-stressed concrete containments subjected to internal pressure. The conventional design methods for containments are based on allowable stress codes which ensure certain factor of safety between expected load and expected structural strength.
Prinja, Nawal K   +3 more
openaire   +3 more sources

Parameter Identification for Structural Health Monitoring with Extended Kalman Filter Considering Integration and Noise Effect

open access: yesApplied Sciences, 2018
Since physical parameters are much more sensitive than modal parameters, structural parameter identification with an extended Kalman filter (EKF) has received extensive attention in structural health monitoring for civil engineering structures.
Liyu Xie   +5 more
doaj   +1 more source

Influence of the percentage of reinforcement by unstressed rebar on the deformability of pre-stressed RC beams

open access: yesProduction Engineering Archives, 2021
This article presents the materials of deformability studies of pre-stressed steel-concrete beams reinforced with a package of reinforcement with different ratio of tape and rebar in the pure bending moment zone. The aim of the research was determination
Blikharskyy Yaroslav   +4 more
doaj   +1 more source

Green approach on ternary blended pre stressed cement concrete railway sleepers

open access: yesCleaner Materials, 2022
Conventional Railway concrete sleepers are manufactured using steel pre-stressed strands upto pre-determined stress level surrounded by well compacted controlled concrete.
S. Prabhu   +4 more
doaj   +1 more source

Numerical Study of Cone Penetration Tests in Lunar Regolith for Strength Index

open access: yesApplied Sciences
The cohesive properties of lunar regolith, combined with a low-gravity environment, result in it having a distinct mechanical behavior from sandy soil on Earth.
Xueliang Zhao   +4 more
doaj   +1 more source

A new rock mass rating method based on Mamdani fuzzy inference for rock tunnels

open access: yesYantu gongcheng xuebao, 2017
The rock mass rating (RMR14) method can evaluate the mechanical properties and structural conditions of rock mass comprehensively and consider the engineering factors such as the initial ground stress fields and excavation ways.
ZHANG Qi 1,2, ZHU He-hua 3, HUANG Xian-bin 3, LI Xiao-jun 3, DAI Guo-liang 1,2
doaj   +1 more source

Calibrating of a Simulation Model to Predict the Flexural Capacity of Pre-Stressed Concrete Beams

open access: yesApplied Sciences, 2023
Simulation models based on finite elements are currently indispensable tools for predicting the structural behavior of both reinforced and pre-stressed concrete elements. This work develops a simulation model of structural linear elements of pre-stressed
Jesús Montero   +3 more
doaj   +1 more source

Member Discrete Element Method for Static and Dynamic Responses Analysis of Steel Frames with Semi-Rigid Joints

open access: yesApplied Sciences, 2017
In this paper, a simple and effective numerical approach is presented on the basis of the Member Discrete Element Method (MDEM) to investigate static and dynamic responses of steel frames with semi-rigid joints.
Jihong Ye, Lingling Xu
doaj   +1 more source

Transverse deformation effect on sensitivity of strain-sensing patch antenna

open access: yesInternational Journal of Distributed Sensor Networks, 2020
The strain sensor based on microwave patch antenna is proposed to monitor structural strain in structural health monitoring. When patch antenna experiences deformation, the resonant frequency of patch antenna will shift.
Chunfeng Wan   +6 more
doaj   +1 more source

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