Enhancing punching shear and post-punching behavior of flat slabs using wire mesh, integrity bars and fibers [PDF]
Scientific ReportsPunching shear failure is a common issue in the connection between flat slabs and reinforced concrete columns. Once failure occurs, a supplementary load-carrying mechanism is necessary to prevent the progressive collapse of the connections.
Ali Janabi, M. Reza Esfahani
doaj +2 more sources
The mechanism of permeability enhancement of coal seams by hydraulic fracturing based on the characterization of coal physical properties [PDF]
Scientific ReportsTo further understand the mechanism of pressure relief and permeability enhancement in coal seams through hydraulic punching, this study employs microscopic testing methods such as porosity testing, spectral analysis, and image scanning, combined with ...
Xun Zhao +9 more
doaj +2 more sources
Strength of cast-in-place slabs for rectangular cross-section columns punching [PDF]
E3S Web of Conferences, 2021 Flat slabs in contemporary buildings are most commonly supported by rectangular cross-section columns. Research of slabs supported by rectangular cross-section columns for punching is rather narrow.
Istomin Andrey, Kudryavtsev Maksim
doaj +1 more source
Punching shear performance of star-shaped steel plates reinforced RC slab-column connections
Case Studies in Construction Materials, 2023 The progressive collapse of flat plate structures due to brittle punching shear failure of reinforced concrete (RC) slab-column connections is a major concern in structural engineering.
Yang Liu +4 more
doaj +1 more source
The calibration of NLFE model for the assessment of the maximum punching capacity of flat slabs [PDF]
MATEC Web of Conferences, 2023 The requirements on structural engineers to design more subtle flat slabs are still increasing and therefore they must often design a large amount of reinforcement against punching. The maximum amount of transverse reinforcement is limited by the maximum
Gregusova Natalia, Halvonik Jaroslav
doaj +1 more source
Progressive Collapse Analysis Of Flat Slab Buildings With Post-Punching Effect [PDF]
مهندسی عمران شریف, 2021 The reinforced concrete flat slab is one of the types of floor systems used to construct residential, office and parking buildings. Because of the direct transfer of floor loads to columns, flat slabs are susceptible to punching failure in slab-column ...
E. Mousapoor, V. Ghiasi, R. Madandoust
doaj +1 more source
Research on Optimization of Large Flow Hydraulic Punching Process in Zhaozhuang Mine
Geofluids, 2022 Taking hydraulic punching test of Zhaozhuang Mine as engineering background, by comparing the field application effects of different hydraulic punching processes, the relationship between coal moisture content around the borehole blockage and gas ...
Jiabao Zhang, Dingqi Li
doaj +1 more source
Evaluation of Localized Necking Models for Fracture Prediction in Punch-Loaded Steel Panels
Journal of Marine Science and Engineering, 2021 This study compared the experimental test results on punch-loaded unstiffened and stiffened panels with numerical predictions using different localized necking modeling approaches with shell elements.
Burak Can Cerik +2 more
doaj +1 more source
Case Studies in Construction Materials, 2023 The use of heavy reinforced and thick transfer-slab in multipurpose tall buildings is crucial to dealing with many issues such as high bending and punching shear stresses created from relocation of columns in floors above transfer-slab.
Mohamed A. El Zareef +2 more
doaj +1 more source
Energy Science & Engineering, 2023 Aiming at the application of hydraulic punching technology in soft, low permeability, and high gas coal seams in Changping Coal Mine, there are problems such as large workload, poor permeability enhancement effect, and the formation of “blank zones” in ...
Rui Min +4 more
doaj +1 more source