Results 1 to 10 of about 96,542 (219)

Study on shear behavior of high-performance polypropylene fiber-reinforced lightweight aggregate concrete beams

open access: yesCase Studies in Construction Materials, 2022
The effects of high-performance polypropylene fiber (HPPF) content, shear span to depth ratio, and stirrup ratio on the shear behavior of lightweight aggregate concrete (LWAC) beams were studied according to shear tests on eleven high-performance ...
Zehui Xiang   +4 more
doaj   +1 more source

Prediction and Verification of Forming Limit Diagrams Based on a Modified Shear Failure Criterion

open access: yesChinese Journal of Mechanical Engineering, 2023
The forming limit diagram plays an important role in predicting the forming limit of sheet metals. Previous studies have shown that, the method to construct the forming limit diagram based on instability theory of the original shear failure criterion is ...
Haibo Wang   +3 more
doaj   +1 more source

Failure analysis around oriented boreholes using an analytical model in different faulting stress regimes

open access: yesJournal of Civil Engineering and Management, 2023
One of the most important instabilities that may occur in a borehole is shear instability caused by high compressive stress in the borehole wall. The initial estimation of the width and depth of the failure zone around the borehole is very important in ...
Ali Lakirouhani   +3 more
doaj   +1 more source

Analysis of influencing factors on wellbore instability for high-pressure gas well during testing and production

open access: yesFrontiers in Earth Science, 2023
Unlike normal-pressure gas wells, wellbore instability is more likely to occur during testing for high-pressure gas wells. Gas acceleration effect exists in gas flow during high-pressure gas well testing, which was ignored in previous wellbore ...
Hailong Jiang   +5 more
doaj   +1 more source

Glass fiber reinforced ultra-high strength concrete with silica fume

open access: yesGrađevinar, 2022
Conventional glass fiber-reinforced concrete (GFRC) has wide applications in high-rise buildings, bridges, and renovation works. In this study, ultra-high-strength glass fiber reinforced concrete (UHS-GFRC) mixtures were developed to minimize the size of
Sathyakumar Natarajan   +3 more
doaj   +1 more source

Experimental Study of the Shear Characteristics of Fault Filled with Different Types of Gouge in Underground Gas Storage

open access: yesEnergies, 2023
In the current international situation, energy storage is an important means for countries to stabilize their energy supply, of which underground storage of natural gas is an important part.
Guosheng Ding   +9 more
doaj   +1 more source

In-Plane Failure Mechanism and Strength Design of Plate-Tube-Connected Circular Steel Arches

open access: yesBuildings, 2023
The in-plane elastoplastic failure mechanism of plate-tube-connected steel circular arches with inverted triangular cross sections is investigated in this study by using theoretical derivation and numerical simulation.
Xigui Yuan, Bo Yuan, Minjie Shi
doaj   +1 more source

Computational modelling of failure mechanisms in reinforced concrete structures [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2010
A modelling approach for macroscopic reinforced concrete (RC) structures and structural elements under static loading conditions is presented. It uses the embedded modelling technique to separately account for concrete volumes and single longitudinal ...
Mark Peter, Bender Michél
doaj   +1 more source

Experimental study on oblique-shear performance of splicing joint for precast ultrahigh-performance concrete segmental bridges

open access: yesCase Studies in Construction Materials, 2023
This paper aims to study the effect of the normal stress on the shear performance of splicing joints for precast ultrahigh-performance concrete (UHPC) segmental bridges (PUSBs), an oblique-shear joint is designed to decompose the vertical force into a ...
Hui Zheng   +6 more
doaj   +1 more source

Shear failure modes and AE characteristics of sandstone and marble fractures

open access: yesOpen Geosciences, 2019
To study the shear failure modes of rock fractures with different morphologies, rock types and test conditions, direct shear tests were conducted with the aid of an acoustic emission test system to obtain the characteristics of acoustic emissions in the ...
Guo Baohua, Dong Hangyu
doaj   +1 more source

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