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Steel frame collapse assessment method based on dynamic increase factor

Građevinar, 2022
To study the laws of evolution of dynamic increase factors (DIFs), relationship between the DIFs and progressive collapse resisting capacity of a structure with web cleat joints under the column removal scenario, a refined finite element model is ...
Pengfei Wang, Xiaofei Wang
doaj   +2 more sources

A study on the dynamic mechanical properties of coral concrete reinforced with polypropylene and basalt fibers [PDF]

Scientific Reports
To clarify the strain-rate-dependent behavior of hybrid fiber-reinforced coral aggregate concrete, dynamic splitting tensile tests were conducted on specimens incorporating polypropylene fibers(PPF) and basalt fibers (BF) with varying lengths and volume ...
Zhongqing Li, Hao Ge, Taiping Kang, Wen Kang   +3 more
doaj   +2 more sources

Influence of moisture content on the concrete response under dynamic loading

Ain Shams Engineering Journal, 2023
Several researches have highlighted the influence of external environmental conditions (e.g. moisture and temperature) on the concrete response at different strain rates, however, limited data are available considering such factors.
Shady Salem, Elamir Eissa, Eman Zarif, Sarah Sherif, Mostafa Shazly   +4 more
doaj   +1 more source

Force Transfer Mechanism and Component-Based Model of Cast-Steel-Stiffened Circular-Tube-Column Frames for Progressive Collapse Analysis

Buildings, 2022
In this paper, the system response, stress redistribution, failure mode, and catenary effect of steel frames with circular tube columns and cast steel stiffener (CSS) joints under a sudden column removal scenario were revealed.
Xinxia Li, Lan Tao, Mingjie Liu
doaj   +1 more source

Investigating the Impact Factor of Cable Stayed Bridges under the Passage of Moving Load at Different Speeds [PDF]

پژوهش‌های زیرساخت‌های عمرانی, 2023
Due to developments in the field of fast transportation, increase in permitted speed and load capacity, moving loads can have significant effects on the dynamic forces of bridges. To consider the dynamic effect in the design of the structure, the dynamic
Hamidreza Dehghani, Ehsan Dehghani
doaj   +1 more source

Experimental investigation of rigid confinement effects of radial strain on dynamic mechanical properties and failure modes of concrete

International Journal of Mining Science and Technology, 2021
In this study, to confirm the effect of confining pressure on dynamic mechanical behavior and failure modes of concrete, a split Hopkinson pressure bar dynamic loading device was utilized to perform dynamic compressive experiments under confined and ...
Pengfei Liu, Xiaoping Zhou, Qihu Qian
doaj   +1 more source

Effect of Loading Rate on Tensile and Failure Behavior of Concrete

Sensors, 2020
Three-point bending experiments of concrete beams were conducted under the strain rate range of 10−6 s−1 and 1.5 × 10−3 s−1. A novel 3D laser scanner, Handy SCAN, was employed to detect the areas of interface, mortar and aggregate on the crack surface ...
Xiaocui Chen, Liguo Sun, Wenhu Zhao, Yuan Zheng   +3 more
doaj   +1 more source

Numerical study on dynamic properties of rubberised concrete with different rubber contents

Defence Technology, 2023
As a green environmentally-friendly material, rubberised concrete (RuC), which has the characteristics of low elastic modulus, large deformation capacity, high damping, good energy dissipation and good crack resistance, has attracted extensive attention ...
Lei Pan, Hong Hao, Jian Cui, Thong M. Pham   +3 more
doaj   +1 more source

Dynamic strength criterion for rock-like materials

Yantu gongcheng xuebao, 2020
The strength of rock-like materials has obvious strain rate effect. Based on the characteristics of uniaxial dynamic strength, a simple strength criterion is proposed, which can uniformly predict the uniaxial strength from quasi-static to dynamic.
HU Jing 1, YAO Yang-ping 2, ZHANG Xue-dong 1, WEI Ying-qi 1, ZHANG Zi-tao 1, CHEN Zu-yu 1
doaj   +1 more source

Dynamics of students' internal health picture with increasing external stress factors

Vestnik of Samara State Technical University Psychological and Pedagogical Sciences, 2023
The rapid changes in the situation in world politics, the increase in the intensity of armed conflicts, the narrowing of the time perspective are unprecedented challenges that the modern generation of young people have to face. In these conditions, the problem of the psychological health of young people and the factors of its preservation is becoming ...
Natalia N. Doronina, Lyudmila B. Kuznetsova, Vitalina A. Shvetsova   +2 more
openaire   +2 more sources