scholarly journals Cyclic Behaviour of Expanded Polystyrene (EPS) Sandwich Reinforced Concrete Walls

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Ari Wibowo ◽  
Indradi Wijatmiko ◽  
Christin R. Nainggolan
Keyword(s):  
Reinforced Concrete ◽  
Peak Load ◽  
Lateral Load ◽  
Expanded Polystyrene ◽  
Wire Mesh ◽  
Collapse Mechanism ◽  
Strong Wind ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
The Impact

Precast concrete walls become increasingly utilized due to the rapid needs of inexpensive fabricated house especially as traditional construction cost continues to climb, and also, particularly at damaged area due to natural disasters when the requirement of a lot of fast-constructed and cost-efficient houses are paramount. However, the performance of precast walls under lateral load such as earthquake or strong wind is still not comprehensively understood due to various types of reinforcements and connections. Additionally, the massive and solid wall elements also enlarge the building total weight and hence increase the impact of earthquake significantly. Therefore, the precast polystyrene-reinforced concrete walls which offer light weight and easy installment became the focus of this investigation. The laboratory test on two reinforced concrete wall specimens using EPS (expanded polystyrene) panel and wire mesh reinforcement has been conducted. Quasi-static load in the form of displacement controlled cyclic tests were undertaken until reaching peak load. At each discrete loading step, lateral load-deflection behaviour, crack propagation, and collapse mechanism were measured which then were compared with theoretical analysis. The findings showed that precast polystyrene-reinforced concrete walls gave considerable seismic performance for the low-to-moderate seismic region reaching up to 1% drift at 20% drop of peak load. However, it might not be sufficient for high seismic regions, at which double-panel wall type can be more suitable.

Impact of Aircraft Engines Into Reinforced Concrete Walls

2002 ◽  
Author(s):  
Darrell Lawver ◽  
Darren Tennant ◽  
John Mould ◽  
Howard Levine
Keyword(s):  
Reinforced Concrete ◽  
Constitutive Model ◽  
Power Plants ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
Rate Dependent ◽  
Hexahedral Elements ◽  
Failure Models ◽  
Engine Components ◽  
The Impact

Major components of storage facilities and nuclear power plants are designed using reinforced concrete walls. Accidental or intentional impact of these structures by aircraft is a concern. The potential for penetration of these facilities by the aircraft or its components and the subsequent damage to the contents and release of toxic substances is a major concern. This paper focuses on analyzing the impact of jet engines into heavily reinforced concrete walls. These engines are among the stiffest and most massive components of an aircraft and the most likely to seriously damage and penetrate the reinforced concrete. We model both the engine and the reinforced concrete deformations using failure models for reinforced concrete and metals. Unlike many projectile impact problems, the impacting engine cannot be considered to be rigid. A large amount of energy is consumed in the plastic deformation and fracture of the engine components. The reinforced concrete is modeled using hexahedral elements for the concrete and beam elements for the rebar reinforcement. An advanced three invariant viscoplastic softening cap constitutive model describes the ductile and brittle rate-dependent characteristics of concrete. The rebar is modeled using a rate dependent, strain hardening von Mises formulation with failure controlled by fracture energy dissipation. A similar constitutive model is employed for the shell elements used to represent the engine components. These failure models are included in the FLEX large deformation finite element code which uses an explicit, central difference solution procedure with subcycling to solve the equations of motion. Element erosion using different criteria for concrete and metals is used to remove severely distorted and failed elements. Procedures used to mitigate the deleterious and unrealistic effects of hourglass control and viscoplasticity in the softening and failure regimes are discussed. The results from the computations are compared with experimental data generated by impacting a TF-30 engine into a two foot thick concrete wall.

Analysis of Multistoried RCC Building with Shear Wall and Outrigger using ETABS Software

2021 ◽  
Vol 9 (VI) ◽  
pp. 2808-2811
Author(s):  
Prof. Subodh Dhoke
Keyword(s):  
Reinforced Concrete ◽  
Load Capacity ◽  
Tall Buildings ◽  
Well Being ◽  
Shear Wall ◽  
Engineering Practice ◽  
Structural Element ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
The Impact

During earthquakes, a large number of buildings are destroyed due to the cause of lateral forces and increased load capacity in the structural element, and this is caused by winds, earthquakes and uneven settlement of cargo. The least damage and well-being a healthy level of construction is a necessary requirement for tall buildings. To reduce the impact of damage on all high structures, it may consist of basic insulation techniques and sliding walls, and so on. Buildings are used to increase design performance and limit damage to landslide walls. On tall buildings to prevent earthquake loads, reinforced concrete walls are used as supporting elements. Reinforced concrete structures are mainly implemented in engineering practice in different situations and different applications. Many researchers turn to the effectiveness of sliding walls with boundary conditions based on different types of reinforcement alignment. This document consists of modeling different models for the shear wall housing and the hood system.

Cyclic lateral load behavior of squat reinforced concrete walls

2018 ◽  
Vol 160 ◽  
pp. 147-160 ◽  
Author(s):  
Tevfik Terzioglu ◽  
Kutay Orakcal ◽  
Leonardo M. Massone
Keyword(s):  
Reinforced Concrete ◽  
Lateral Load ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
Cyclic Lateral Load ◽  
Load Behavior

Effectiveness of repairing old reinforced-concrete walls of the No. 8 lock of the Moscow Canal by prestressed anchors

1996 ◽  
Vol 30 (11) ◽  
pp. 654-663 ◽  
Author(s):  
V. N. Zhukov ◽  
S. V. Ternavskii ◽  
Yu. O. Zal'tsman ◽  
A. A. Lyubomirov
Keyword(s):  
Reinforced Concrete ◽  
Concrete Walls ◽  
Reinforced Concrete Walls
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