Seismic Behaviour of Unskewed Two Bridge Pier under In-Plane Lateral Cyclic Loading

2015 ◽  
Keyword(s):  
Cyclic Loading ◽  
Bridge Pier ◽  
Seismic Behaviour

Resilience improvement of historical timber floors subjected to cyclic loading

2021 ◽  
Author(s):  
Shota Urushadze ◽  
Miloš Drdácký
Keyword(s):  
Cyclic Loading ◽  
Numerical Modelling ◽  
System Performance ◽  
Historic Buildings ◽  
Seismic Behaviour ◽  
Plane Shear ◽  
Floor Systems ◽  
Experimental Behaviour

<p>Horizontal diaphragms play an important role in the seismic behaviour of old buildings, and their behaviour when loaded by in-plane shear has not yet been sufficiently described in literature. The distribution of horizontal forces among bearing walls is strongly dependent on the stiffness of horizontal components and their connections to the vertical structures. The paper focuses on horizontal diaphragms of historic buildings, such as traditional floor systems and feasible intervention technologies for the improvement of their resilience. Experimental behaviour of original and strengthened wooden floors is analysed in order to obtain information on the system performance and supply parameters for use in numerical modelling.</p>

scholarly journals Modeling of steel bridge pier base to footing connections under cyclic loading.

1997 ◽  
pp. 105-123 ◽  
Author(s):  
Yoshiaki Goto ◽  
Satoshi Miyashita ◽  
Hideyuki Fujiwara ◽  
Takashi Kamijo
Keyword(s):  
Cyclic Loading ◽  
Bridge Pier ◽  
Steel Bridge

Seismic performance of a bridge pier reinforced with titanium alloy bars

2021 ◽  
Author(s):  
Mahesh Acharya ◽  
Mustafa Mashal ◽  
Jared Cantrell
Keyword(s):  
Titanium Alloy ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Large Scale ◽  
Plastic Hinge ◽  
Bridge Pier ◽  
Bridge Piers ◽  
Structural Performance ◽  
Concrete Bridge ◽  
Hinge Zone

<p>The research in this paper focuses on the use of Titanium Alloy Bars (TiABs) in concrete bridge piers located in high seismic zones. The paper discusses a new bridge pier system that incorporates both seismic resiliency and durability concepts. A large-scale bridge pier, reinforced with TiABs and spiral, is tested under quasi-static cyclic loading protocol. The results are compared against a benchmark cast-in-place pier with normal rebars and spiral under the same loading protocol. Based on the testing results, the use of TiABs in concrete piers would reduce rebar congestion up to 50%, provide adequate ductility, and would result in reduced residual displacement following an earthquake. The pier reinforced with TiABs reached higher drift ratios compared to cast-in-place pier. Furthermore, smaller flexural cracks that are likely to appear in the plastic hinge zone during moderate earthquakes are not a major concern for structural performance and durability of bridge piers reinforced with TiABs.</p>

Seismic behaviour of fibre-reinforced-polymer- and steel-strengthened timber connections

2018 ◽  
Vol 22 (2) ◽  
pp. 502-518 ◽  
Author(s):  
Jia-Qi Yang ◽  
Scott T Smith ◽  
Zhenyu Wang
Keyword(s):  
Cyclic Loading ◽  
Structural Integrity ◽  
Bending Moment ◽  
Steel Plates ◽  
Seismic Behaviour ◽  
Damping Characteristics ◽  
Reinforced Polymer ◽  
Moment Resisting ◽  
Fibre Reinforced Polymer ◽  
Timber Connections

In the event of a seismic attack, the structural integrity of moment-resisting timber frames in the joint region may become compromised and hence the joint may not be able to transfer bending moment around the frame. Often, replacement of a damaged joint is not an option and hence efficient but effective strengthening and repair schemes for such joints are necessary. This article reports the results of 15 tests on 10 metal dowel-type moment-resisting timber connections subjected to monotonic or cyclic loading. Joints are either strengthened or repaired with epoxy, fibre-reinforced polymer composites or steel plates. The ability of the test joints to resist the imposed cyclic loading is presented in the context of hysteresis responses. Recommendations for strengthening and repair interventions are made based on strength, stiffness, ductility, energy dissipation and damping characteristics of the test joints.

Seismic performance of concrete walls reinforced by high-strength bars: cyclic loading test and numerical simulation

2021 ◽  
Author(s):  
Xiangyong Ni ◽  
Shuangyin Cao ◽  
Hassan Aoude
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Numerical Study ◽  
Shear Walls ◽  
High Strength ◽  
Test Results ◽  
3D Fem ◽  
Seismic Behaviour ◽  
Loading Test

This study examines the influence of cross-section shape on the seismic behaviour of high-strength steel reinforced concrete shear walls (HSS-RC) designed with Grade HRB 600 MPa reinforcement. As part of the study, two flexure-dominant walls with rectangular and T-shaped cross-sections, are tested under reversed cyclic loading. Seismic performance is evaluated by studying the failure characteristics, hysteretic curves, energy dissipation, ductility and reinforcing bar strains in the two walls. As part of the numerical study, two-dimensional (2D) and three-dimensional (3D) finite element modelling (FEM) are used to predict the seismic response of the rectangular and T-shaped walls, respectively. The test results show that compared to the rectangular wall, the flange in the T-shaped HSS-RC wall increased strength, energy dissipation and stiffness, but decreased ductility. The analytical hysteretic curves calculated using 2D and 3D FEM analyses show good agreement with the experimental test results.

scholarly journals Experimental Research on Seismic Behaviour of Railway Bridge Pier

2019 ◽  
Vol 611 ◽  
pp. 012046
Author(s):  
Guocheng Fu ◽  
Yuntian Hu ◽  
Lei Liu ◽  
Shanzhong Liu ◽  
Xiaoxue Wang
Keyword(s):  
Experimental Research ◽  
Bridge Pier ◽  
Railway Bridge ◽  
Seismic Behaviour

scholarly journals Seismic Upgrading of RC Wide Beam–Column Joints Using Steel Jackets

Buildings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 203
Author(s):  
Giuseppe Santarsiero ◽  
Angelo Masi
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Cyclic Loading ◽  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Seismic Capacity ◽  
Seismic Behaviour ◽  
Wide Beam ◽  
Rc Frames ◽  
Load Carrying

This study is devoted to experimentally investigate the seismic behaviour of reinforced concrete (RC) wide beam–column joints equipped with a steel jacketing seismic strengthening solution. To this end, three identical full-scale specimens have been tested under cyclic loading, one in the as-built condition and two after the application of the strengthening solutions. Details of selected solutions are described in the paper along with the experimental results which confirm how the application of simple and feasible steel interventions can effectively improve the seismic capacity of wide beam–column connections in RC frames, especially in terms of lateral load carrying capacity and energy dissipation.

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