Results 1 to 10 of about 1,309 (214)

Theoretical Study of the Reinforcement of Pre-stressed Concrete Cylinder Pipes with External Pre-stressed Strands

open access: yesLecture Notes in Civil Engineering, 2023
AbstractReinforcement of the pre-stressed concrete cylinder pipes with external pre-stressed strands is an effective way to enhance a prestressed concrete cylinder pipe’s ability to bear the design hydraulic pressure. A theoretical derivation is studied, and this formula derivation could be used to determine the cross-sectional area per unit length ...
Tiesheng Dou
exaly   +2 more sources

Pre-Stress Losses in FRP Pre-Stressed Reinforced Concrete – Subject Overview

open access: yesArchives of Civil Engineering, 2018
Fiber reinforced polymers (FRPs) due to their specific high-strength properties become more and more popular and replace traditional structural materials like conventional steel in prestressed concrete structures. FRP reinforced structures are relatively
Przygocka M., Kotynia R.
doaj   +2 more sources

Research on Experimental and Numerical Methods for Mechanical Properties of Lightweight Hollow Precast Utility Tunnels

open access: yesBuildings, 2022
In this paper, the mechanical properties of hollow precast utility tunnels are studied by experimental and numerical methods. Through full-scale experiments, the failure modes of ordinary and hollow utility tunnels are studied, and the failure stages of ...
Yutao Feng, Weibin Li, Nan Lu
doaj   +1 more source

Distributed Compressive Sensing for Wireless Signal Transmission in Structural Health Monitoring: An Adaptive Hierarchical Bayesian Model-Based Approach

open access: yesSensors, 2023
Signal transmission plays an important role in the daily operation of structural health monitoring (SHM) systems. In wireless sensor networks, transmission loss often occurs and threatens reliable data delivery. The massive amount of data monitoring also
Zhiwen Wang   +4 more
doaj   +1 more source

Calculation of Pre-Stressed Structures using High-strength reinforcement without concrete-to-steel bond [PDF]

open access: yesE3S Web of Conferences, 2023
The article deals with the method of calculation of a pre-stressed beam for the first group of limit states without adhesion of wire-rope reinforcement with concrete (monostrand) in the curved position.
Topilin A.N.   +2 more
doaj   +1 more source

Representation of In-Service Performance for Cable-Stayed Railway–Highway Combined Bridges Based on Train-Induced Response’s Sensing Data and Knowledge

open access: yesSensors, 2022
Real-time representation of the current performance of structures is an important task for perceiving potential danger in in-service bridges. Methods driven by the multisource sensing data of structural health monitoring systems are an effective way to ...
Han-Wei Zhao, You-Liang Ding, Ai-Qun Li
doaj   +1 more source

Shear Test of Variable Depth RC Beams with Inflection Point [PDF]

open access: yesMATEC Web of Conferences, 2019
Variable depth continuous box girder bridges are widely used recently. However, the influence mechanism of the inflection point and variable depth on the shear behaviour of this type bridge has not been fully understood.
Zheng Kaiqi, Kuwornu Michael, Liu Zhao
doaj   +1 more source

A 4D-Printed Self-Folding Spatial Mechanism with Pre-Stressed Response Properties

open access: yesMachines, 2023
Exploring the transformation of spatial mechanisms from their unfolded to controlled folding states to meet the requirements of various application scenarios has long been a hot topic in mechanical structure research.
Wencai Zhang, Duanling Li
doaj   +1 more source

Review of Basalt Fiber-Reinforced Concrete in China: Alkali Resistance of Fibers and Static Mechanical Properties of Composites

open access: yesAdvances in Materials Science and Engineering, 2018
Research on three-dimensional, randomly distributed BFRC in China is analyzed and summarized in relative depth in this study. The results indicate that the effect of the fiber component and alkali corrosion temperature on the alkali resistance of BF is ...
Zhensheng Guo   +3 more
doaj   +1 more source

Numerical calculation of a 20MN heavy duty hydraulic press for analyzing the double frame pre-stressed steel wire winding

open access: yesFrontiers in Mechanical Engineering, 2023
The expected preloading effect of a hydraulic press frame parts (upper/lower semi-circular beams and columns) with pre-stressed by means of Winding Steel Wires which is directly related to the reliability and normal safe operation of the hydraulic press.
Yumin Zhang   +4 more
doaj   +1 more source

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