scholarly journals PENINJAUAN EFEK PENGEKANGAN DINDING PADA HUBUNGAN KOLOM , BALOK DAN DINDING AKIBAT BEBAN BERULANG LATERAL SERTA IMPLEMENTASINYA PADA PEMBANGUNAN RUMAH TAHAN GEMPA DI KABUPATEN ACEH BESAR

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Cut Yusnar
Keyword(s):  
Cyclic Loading ◽  
Axial Loading ◽  
Frame Structure ◽  
It Implementation ◽  
Drift Ratio ◽  
Earthquake Resistant ◽  
Axial Cyclic Loading ◽  
Strength And Durability ◽  
Strength And Ductility

The function of wall which arranged from brick even from concrete in function as partition could increase strength and durability of frame structure, but actually the contribution of wall in increasing strength and ductility is often ignored. It is happened because of lack of acknowledge of behavior of frame and wall caused of axial loading that consist of cyclic lateral loading as the effect of wind load and earthquake.. In this case study it was aimed to observe the effect of wall confinement at column, beam and wall joint caused of lateral cyclic loading and it implementation on earthquake resistant housing building in Aceh Besar sub district. The strength and ductility increasing on the frame with wall and without wall (Husna, 2008) proofed that there were contribution of the increasing of strength and ductility of frame. Drift ratio of frame with wall without bed joint was 0.74. % and drift ratio of frame with wall and bed joint was 0.84 %.. In the other hand drift ratio of portal without wall was 44.85 %.Key words : strength, ductility, frame, full wall, partial wall, axial cyclic loading

scholarly journals Estimation of the Impact of the Forces from an External Explosion to Building Faces on the Responses of a 3D Frame Structure

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Farzad Sadeghi ◽  
Seyyed Reza Sarafrazi ◽  
Ali Ghods
Keyword(s):  
Shock Wave ◽  
Frame Structure ◽  
Terrorist Attacks ◽  
Second Step ◽  
Rc Buildings ◽  
Effect Of Pressure ◽  
Earthquake Resistant ◽  
The Impact ◽  
Step Responses

Surface explosions resulting from terrorist attacks will produce a hemispherical shock wave in the air, which, upon release, can affect five faces of the building which is in front of it. Given the fact that conventional buildings are usually exposed to such explosions, this study examined the effect of pressure to each face of a building on the responses of the structure and has compared different relevant scenarios. This study, which includes the following two steps, was conducted as a case study on earthquake resistant RC buildings, with the help of UFC guideline and using the software SAP2000. In the first step, responses of loading on each face were separately calculated so that they were compared with the responses from overall loading on all faces. The sensitivity of the responses and their ratio to the variables considered were evaluated in the second step. Accordingly, an outline was formed on the explosion hazards considered for these types of buildings.

scholarly journals A Finite Element Study on Compressive Resistance Degradation of Square and Circular Steel Braces under Axial Cyclic Loading

2021 ◽  
Vol 11 (13) ◽  
pp. 6094
Author(s):  
Hubdar Hussain ◽  
Xiangyu Gao ◽  
Anqi Shi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cyclic Loading ◽  
Slenderness Ratio ◽  
Hysteretic Behavior ◽  
Element Analysis ◽  
Section Shape ◽  
Axial Cyclic Loading ◽  
Global Buckling ◽  
Parametric Studies

In this study, detailed finite element analysis was conducted to examine the seismic performance of square and circular hollow steel braces under axial cyclic loading. Finite element models of braces were constructed using ABAQUS finite element analysis (FEA) software and validated with experimental results from previous papers to expand the specimen’s matrix. The influences of cross-section shape, slenderness ratio, and width/diameter-to-thickness ratio on hysteretic behavior and compressive-tensile strength degradation were studied. Simulation results of parametric studies show that both square and circular hollow braces have a better cyclic performance with smaller slenderness and width/diameter-to-thickness ratios, and their compressive-tensile resistances ratio significantly decreases from cycle to cycle after the occurrence of the global buckling of braces.

Analysis on the Seismic Behavior of Extended End-Plate Connections of Steel Frame Structure

2012 ◽  
Vol 193-194 ◽  
pp. 1405-1413 ◽  
Author(s):  
Zhu Ling Yan ◽  
Bao Long Cui ◽  
Ke Zhang
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Frame Structure ◽  
End Plate ◽  
Rigid Connection ◽  
Extended End Plate ◽  
Plate Connections ◽  
Steel Frame Structure

This paper conducts analysis on beam-column extended end-plate semi-rigid connection joint concerning monotonic loading and cyclic loading of finite element through ANSYS program, mainly discussed the influence of parameters such as the form of end plate stiffening rib on anti-seismic performance of joint.

Fatigue Failure Model for Composite Laminates under Multi-Axial Cyclic Loading

2000 ◽  
Vol 183-187 ◽  
pp. 945-950 ◽  
Author(s):  
Chong Soo Lee ◽  
W. Hwang ◽  
Hyun Chul Park ◽  
Kyung Seop Han
Keyword(s):  
Cyclic Loading ◽  
Fatigue Failure ◽  
Composite Laminates ◽  
Failure Model ◽  
Axial Cyclic Loading

scholarly journals Verification of Brittle Fracture Criteria for Bimaterial Structures

2014 ◽  
Vol 8 (1) ◽  
pp. 44-48
Author(s):  
Grzegorz Mieczkowski ◽  
Krzysztof Molski
Keyword(s):  
Experimental Data ◽  
Composite Materials ◽  
Cyclic Loading ◽  
Brittle Fracture ◽  
Axial Loading ◽  
Loading Conditions ◽  
Fracture Criteria ◽  
Interfacial Cracks ◽  
Theoretical Results ◽  
Brittle Fracture Criteria

Abstract The increasing application of composite materials in the construction of machines causes strong need for modelling and evaluating their strength. There are many well known hypotheses used for homogeneous materials subjected to monotone and cyclic loading conditions, which have been verified experimentally by various authors. These hypotheses should be verified also for composite materials. This paper provides experimental and theoretical results of such verifications for bimaterial structures with interfacial cracks. Three well known fracture hypotheses of: Griffith, McClintock and Novozhilov were chosen. The theoretical critical load values arising from each hypotheses were compared with the experimental data including uni and multi-axial loading conditions. All tests were carried out with using specially prepared specimens of steel and PMMA.

A Proximally-Adjustable Variable Length Intramedullary Nail: Ex Vivo Quasi-Static and Cyclic Loading Evaluation

2017 ◽  
Vol 11 (4) ◽  
Author(s):  
Mark J. Hedgeland ◽  
Alexander Martin Clark ◽  
Mario J. Ciani ◽  
Arthur J. Michalek ◽  
Laurel Kuxhaus
Keyword(s):  
Cyclic Loading ◽  
Mechanical Performance ◽  
Ex Vivo ◽  
Healing Process ◽  
Axial Loading ◽  
Torsional Stiffness ◽  
Axial Stiffness ◽  
Four Point Bending ◽  
Point Bend ◽  
Static And Cyclic Loading

An adjustable-length intramedullary (IM) nail may reduce both complications secondary to fracture fixation and manufacturing costs. We hypothesized that our novel nail would have suitable mechanical performance. To test this hypothesis, we manufactured three prototypes and evaluated them in quasi-static axial compression and torsion and quasi-static four-point bending. Prototypes were dynamically evaluated in both cyclic axial loading and four-point bending and torsion-to-failure. The prototypes exceeded expectations; they were comparable in both quasi-static axial stiffness (1.41 ± 0.37 N/m in cervine tibiae and 2.30 ± 0.63 in cadaver tibiae) and torsional stiffness (1.05 ± 0.26 N·m/deg in cervine tibiae) to currently used nails. The quasi-static four-point bending stiffness was 80.11 ± 09.360, greater than reported for currently used nails. A length-variance analysis indicates that moderate changes in length do not unacceptably alter bone-implant axial stiffness. After 103,000 cycles of axial loading, the prototype failed at the locking screws, comparable to locking screw failures seen clinically. The prototypes survived 1,000,000 cycles of four-point bend cyclic loading, as indicated by a consistent phase angle throughout cyclic loading. The torsion-to-failure test suggests that the prototype has adequate resistance to applied torques that might occur during the healing process. Together, these results suggest that our novel IM nail performs sufficiently well to merit further development. If brought to market, this adjustable-length IM nail could reduce both patient complications and healthcare costs.

scholarly journals Effective stress regime around a jacked steel pile during installation ageing and load testing in chalk

2018 ◽  
Vol 55 (11) ◽  
pp. 1577-1591 ◽  
Author(s):  
R.M. Buckley ◽  
R.J. Jardine ◽  
S. Kontoe ◽  
B.M. Lehane
Keyword(s):  
Cyclic Loading ◽  
Effective Stress ◽  
Test Site ◽  
Static Tension ◽  
Load Testing ◽  
Stress Regime ◽  
Effective Stresses ◽  
Axial Cyclic Loading ◽  
Tension Testing ◽  
Static And Cyclic Loading

This paper reports experiments with 102 mm diameter closed-ended instrumented Imperial College piles (ICPs) jacked into low- to medium-density chalk at a well-characterized UK test site. The “ICP” instruments allowed the effective stress regime surrounding the pile shaft to be tracked during pile installation, equalization periods of up to 2.5 months, and load testing under static tension and one-way axial cyclic loading. Installation resistances are shown to be dominated by the pile tip loads. Low installation shaft stresses and radial effective stresses were measured that correlated with local cone penetration test (CPT) tip resistances. Marked shaft total stress reductions and steep stress gradients are demonstrated in the vicinity of the pile tip. The local interface shaft effective stress paths developed during static and cyclic loading displayed trends that resemble those seen in comparable tests in sands. Shaft failure followed the Coulomb law and constrained interface dilation was apparent as the pile experienced drained loading to failure, although with a lesser degree of radial expansion than with sands. Radial effective stresses were also found to fall with time after installation, leading to reductions in shaft capacity as proven by subsequent static tension testing. The jacked, closed-ended, piles’ ageing trends contrast sharply with those found with open piles driven at the same site, indicating that ageing is affected by pile tip geometry and (or) installation method.

scholarly journals Evaluation of the performance of high-rise building structures with plan ‘H’ shaped for earthquake with height increase (Case study: Apartment Urban Sky-Bekasi)

2021 ◽  
Vol 878 (1) ◽  
pp. 012053
Author(s):  
E Nehe ◽  
P Simanjuntak ◽  
S P Tampubolon
Keyword(s):  
Building Structures ◽  
Output Data ◽  
High Rise ◽  
Earthquake Force ◽  
Earthquake Resistant ◽  
Height Increase ◽  
Design Earthquake ◽  
Story Building ◽  
Industrial Center

Abstract Currently, Bekasi City is developing into a residence for an urban, industrial center, and built apartments. One of them is the Urban Sky-Bekasi Apartment. This researched raises by an apartment as a case study to evaluate the performance of multi-story building structures as earthquake-resistant buildings. This researched conduct by add the original building height to 8 m (a basic height equals 102 m and a new height equals 110 m) to analyze whether the planning data made could still bear the same load with different heights and could still be categorized as earthquake-resistant buildings. From the results of the SAP-2000 output. The value of the basic static and dynamic shear forces in a 110 m building is always greater than a 102 m building in both the X and Y directions, this indicates that the taller a building is, the higher the design earthquake force used will be. The displacement in a 110 m building is always bigger than a 102 m building in both the X and Y directions. The weakest strength of the structure in a 110 m building is on the 29th floor in the X directions and Y directions, while the 102 m building is on the 26th floor in the X directions and 24 directions. It shows that with the addition of high SAP-2000 output data such as displacement, drift ratio, and other data after analysis shows that a 110 m building is categorized as an earthquake-resistant building according to SNI 1726-2012.

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