Results 21 to 30 of about 210,949 (259)

Roof control effect of in situ strip interval paste backfill in goaf [PDF]

open access: yesScientific Reports
Faced with the dual challenges of coal mining under buildings, railways, and water bodies, as well as the shortage of backfill materials, and guided by the basic principles of more mining, less backfilling, and effective roof control, a technical concept
Kang Yang   +13 more
doaj   +2 more sources

Novel formula for the elastic critical moment of beams with corrugated web

open access: yesce/papers, 2023
AbstractThis paper presents a novel analytical expression to determine the elastic lateraltorsional buckling resistance of I‐beams with corrugated web. The corrugated web beams have higher torsional stiffness than the flat web beams; therefore, the self‐weight of the beam can be reduced. The appropriate hand calculation methods to determine the elastic
Gábor Hajdú, Ferenc Papp
openaire   +1 more source

Buckling in columns. Solution of the indeterminations of Euler's theory and derivation of an equation for inelastic buckling

open access: yesResults in Engineering, 2023
Buckling in columns under central load has always been a complex problem and until now remains unclear. This work consists of two parts. In the first, a theory is presented to solve the indeterminations of Euler's theory, such as: Moment, slope ...
Manuel Antonio Ramírez Márquez
doaj   +1 more source

Analytical and numerical study of influence of the shape of the section on lateral buckling of doubly symmetrical sections [PDF]

open access: yesE3S Web of Conferences, 2021
This paper presents an analytical and numerical study of the lateral buckling of beams with double symmetrical I and H cross sections having substantially the same plastic modulus of resistance around the strong axis subjected by a uniformly distributed ...
Egereva Elvira, Bonga Hugues
doaj   +1 more source

Overall Stability Behavior and Design Method of Q460 High Strength Steel Welded I-section Two-span Continuous Beam

open access: yesTaiyuan Ligong Daxue xuebao, 2021
In order to investigate the overall stability behavior of Q460 high strength steel welded I-section two-span continuous beam and develop the design method of such beams in codes, a finite element model considering residual stress was established by using
Jinyou ZHAO   +3 more
doaj   +1 more source

Stochastic analysis for bending capacity of precast prestressed concrete bridge piers using Monte-Carlo simulation and gradient boosted regression trees algorithm

open access: yesAdvances in Bridge Engineering, 2023
The use of precast prestressed concrete bridge piers is rapidly evolving and widely applied. Nevertheless, the probabilistic behavior of the bending performance of precast prestressed concrete bridge piers has often been overlooked.
Xiaopan Lai   +3 more
doaj   +1 more source

Mathematical Investigation of 1D Discontinuity Waves in Dilute Granular Gases

open access: yesMathematics, 2023
The propagation of acceleration waves in dilute granular gases was investigated. Acceleration waves propagating in elastic gases, mixtures, and other materials are widely studied in the literature, but not in granular gases.
Elvira Barbera, Annamaria Pollino
doaj   +1 more source

Study on bending strength of sandwich U-shaped beam with lattice core

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In this paper, the bending collapse behavior of sandwich U-shaped beam with lattice core has been investigated by using finite element analysis. In particular, the effects of geometric properties of lattice core and faceplate on the maximum bending ...
Kota ASAUMI, Kuniharu USHIJIMA
doaj   +1 more source

Analysis of Dynamic Response and Ultimate Strength for Box Girder under Bending Moment

open access: yesJournal of Marine Science and Engineering, 2023
The box girder can be seen as a kind of simplified ship structure that can withstand a vertical bending moment. Dynamic loads play an important role in structural safety analysis, such as ship bow slamming during harsh sea conditions.
Gui-Jie Shi   +3 more
doaj   +1 more source

Closed-form critical response of elastic-plastic shear building with viscous damper under pseudo-double impulse for simulating resonant response under near-fault fling-step motion

open access: yesFrontiers in Built Environment, 2022
A set of approximate closed-form solutions of the maximum interstory drifts under the critical pseudo-double impulse (PDI) is derived for non-proportionally damped multi-story shear building models with bilinear hysteresis.
Hiroki Akehashi, Izuru Takewaki
doaj   +1 more source

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