Nonlinear Behavior of Precast Concrete Coupling Beams under Lateral Loads

2007 ◽  
Vol 133 (11) ◽  
pp. 1571-1581 ◽  
Author(s):  
Brad D. Weldon ◽  
Yahya C. Kurama
Keyword(s):  
Precast Concrete ◽  
Nonlinear Behavior ◽  
Lateral Loads ◽  
Coupling Beams

Nonlinear Finite Element Analysis of Diagonally Reinforced Coupling Beams with Head Bar Reinforcements

2013 ◽  
Vol 831 ◽  
pp. 137-140
Author(s):  
Kang Min Lee ◽  
Liu Yi Chen ◽  
Rui Li ◽  
Keun Yeong Oh ◽  
Young Soo Chun
Keyword(s):  
Finite Element ◽  
Construction Projects ◽  
Nonlinear Behavior ◽  
Lateral Loads ◽  
Coupling Beams ◽  
Element Analysis ◽  
Coupled Wall ◽  
Finite Element Software ◽  
Small Depth ◽  
Coupled Wall Systems

Coupling beams resist lateral loads efficiently is well known in coupled wall systems. In many cases, geometric limits result in coupling beams that are deep in relation to their clear span. Coupling beams with small depth-to-span ratio shall be reinforced with two intersecting groups of diagonally placed bars symmetrical along the mid-span. It's always hard to optimize construction projects. This paper used the finite element software (Abaqus) to analysis and simulate the nonlinear behavior of a new reinforcement called head bar and compared the results to the current standards.

In-plane response of unreinforced masonry walls confined by reinforced concrete tie-columns and tie-beams

2017 ◽  
Vol 20 (11) ◽  
pp. 1632-1643 ◽  
Author(s):  
Masoud Amouzadeh Tabrizi ◽  
Masoud Soltani
Keyword(s):  
Numerical Study ◽  
Nonlinear Behavior ◽  
Numerical Approach ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Lateral Loads ◽  
Confined Masonry ◽  
Smeared Crack ◽  
Modeling Strategy ◽  
Reversed Cyclic

This article focuses on the experimental and analytical investigations of masonry walls surrounded by tie-elements under in-plane loads. The experimental results of an unconfined and a confined masonry wall, tested under reversed cyclic lateral loads, are presented. For numerical study, a micro-modeling strategy, using smeared-crack-based approach, is adopted. In order to validate the numerical approach, experimental test results and data obtained from the literature are used, and through a systematic parametric study, the influence of adjoining walls and number of tie-columns on the seismic behavior of confined masonry panels is numerically assessed and a simple but rational method for predicting the nonlinear behavior of these structures is proposed.

Experimental Study on Behavior of Shear Walls Built with Precast Two-way Hollow Slabs for Different Axial-Load Ratios

2013 ◽  
Vol 351-352 ◽  
pp. 833-837
Author(s):  
Ji Liang Liu ◽  
Hui Chen Cui ◽  
Ming Jin Chu ◽  
Jian Qun Hou
Keyword(s):  
Shear Failure ◽  
Precast Concrete ◽  
Failure Process ◽  
Compressive Load ◽  
Shear Walls ◽  
Shear Wall ◽  
Shear Capacity ◽  
Lateral Loads ◽  
Compression Load ◽  
New Type

The shear wall built with precast two-way hollow slab is an innovated precast concrete shear wall suitable for housing industrialization. Two shear walls built with precast two-way hollow slabs were tested pseudo-statically under low cyclic lateral loads to acquire their failure process and modes. The effect of the axial compression load was investigated. The study proved that vertical cracks along the vertical holes of the new type shear wall have been appeared to avoid brittle shear failure, and the shear wall developed integral section wall to walls-columns combination. As the results, the shear walls have the adequate deformability. The test results showed that with the increase of axial compressive ratio, crack development has been limited and the energy dissipation capacity has been improved. It also can be found that with the increase of the axial compressive load, shear capacity of the new type shear walls have been improved.

Nonlinear Finite Element Analysis of U Shaped Steel Plate Reinforced Concrete Coupling Beams

2013 ◽  
Vol 831 ◽  
pp. 141-144
Author(s):  
Kang Min Lee ◽  
Liu Yi Chen ◽  
Rui Li ◽  
Keun Yeong Oh ◽  
Young Soo Chun
Keyword(s):  
Finite Element ◽  
Construction Projects ◽  
Nonlinear Behavior ◽  
Coupling Beams ◽  
Element Analysis ◽  
High Rise ◽  
Finite Element Software ◽  
Small Depth ◽  
Steel Composite ◽  
Current Standards

Coupling beams have been used in high-rise shear wall buildings widely, which take great advantages of high stiffness, small lateral deformation and easy to satisfy with bearing capacity. Coupling beams exhibit different performance with deep beams, which always have small depth-to-span ratio. According to current standards coupling beams shall be reinforced with two intersecting groups of diagonally placed bars symmetrical along the midspan. It's always hard to optimize construction projects. This paper used the finite element software (Abaqus) to analysis and simulate the nonlinear behavior of steel composite reinforcement and compared the results to the current standards.

Application of Steel Plates on the Retrofitting of Current Reinforced Concrete Coupling Beams

2013 ◽  
Vol 721 ◽  
pp. 714-719
Author(s):  
Cheng Bei ◽  
Shi Wei Li ◽  
Ray K.L. Su
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Steel Plates ◽  
Structural Elements ◽  
Lateral Loads ◽  
Coupling Beams ◽  
Coupled Shear Wall

Coupling beams are essential structural elements of reinforced concrete coupled shear wall to resist earthquakes and other lateral loads. But many current reinforced concrete coupling beams are insufficient in resisting lateral loads due to their bad ductility. So a test of retrofitting methods of deep coupling beams with steel plates since their good performance in the ductility and deformation was made to find ways of improving the ductility of the beams, and the results of this retrofitting method prove good because of the incensement of the ductility, deformation and strength of the beams.

scholarly journals A numerical technique for modeling the behavior of single piles in unsaturated soils

2021 ◽  
Vol 337 ◽  
pp. 03012
Author(s):  
Xinting Cheng ◽  
Sai K. Vanapalli
Keyword(s):  
Unsaturated Soils ◽  
Numerical Technique ◽  
Soil Mechanics ◽  
Nonlinear Behavior ◽  
Pile Foundations ◽  
Engineering Practice ◽  
Lateral Loads ◽  
Element Analysis ◽  
Promising Tool ◽  
Single Piles

Pile foundations are widely used in both saturated and unsaturated soils. In certain scenarios, these foundations are subjected to combined vertical and lateral loads. Conventionally, saturated soil mechanics principles are routinely used for the design of pile foundations in unsaturated soils. Such approaches contribute to unreliable estimates of the behavior of piles due to ignoring the influence of matric suction. In this paper, a comprehensive numerical technique is proposed for simulating the behavior of single piles subjected to combined vertical and lateral loads in unsaturated soils by taking account of the nonlinear behavior of shear strength and the elastic modulus of unsaturated soils. This is achieved through a subroutine that was developed for use in the ABAQUS software. The proposed numerical method provided reliable prediction of the vertical load-displacement behavior of a published model pile tested in saturated and unsaturated sands. In addition, 3D finite element analysis was extended to simulate the influence of variations in ground water table (GWT) on the vertical bearing capacity and the influence of vertical loads on lateral response of piles. The proposed numerical technique is a promising tool for implementing the state-of-the-art understanding of the mechanics of unsaturated soils into conventional engineering practice.

Behavior and Design of Reinforced Concrete, Steel, and Steel-Concrete Coupling Beams

2000 ◽  
Vol 16 (4) ◽  
pp. 775-799 ◽  
Author(s):  
Kent A. Harries ◽  
Bingnian Gong ◽  
Bahram M. Shahrooz
Keyword(s):  
Reinforced Concrete ◽  
State Of The Art ◽  
Lateral Loads ◽  
Coupling Beams ◽  
Coupled Wall ◽  
Current State ◽  
Energy Absorbing ◽  
Coupled Wall Systems ◽  
Wall System ◽  
Critical Aspects

The efficiency of coupled wall systems to resist lateral loads is well known. In order for the desired behavior of the coupled wall system to be attained, the coupling beams must be sufficiently strong and stiff. The coupling beams, however, must also yield before the wall piers, behave in a ductile manner, and exhibit significant energy-absorbing characteristics. This paper reviews the current state of the art for the design of conventional reinforced concrete, diagonally reinforced concrete, steel, and composite steel-concrete coupling beams. Although not exhaustive, critical aspects of the design of these systems are presented.

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