This article investigates the seismic behavior of masonry infilled RC frames with/without openings. Four full-scale, single-story, and single-bay specimens were tested under constant vertical loads quasi-static cyclic lateral loads. The experimental results showed that infill wall was more influential in stiffness than load-resisting capacity. opening increased ductility ratio structure due to uniform distribution slow propagation cracks. Finally, simplified micro finite element models are...

Evaluation of the seismic performance masonry-infilled reinforced concrete (RC) frames is challenging because a number damage patterns can be induced by interaction between infill and frame. In this paper, extended finite-element method (XFEM) adopted to model cracking behavior compressive failure in frame members as well masonry units panels, discrete interface element employed simulate mortar joints at frame-to-infill interface. With XFEM, crack propagate an arbitrary manner during...

This study presents a finite element (FE) model, the accuracy of which is verified by comparison between numerical and test results. The calibrated model used to investigate influence vertical arrangement masonry material infill walls on seismic performance reinforced concrete (RC) frames through pushover analysis time–history analysis. lateral capacity, interstorey drift ratio, plastic hinge distribution structures discussed. It was found that damage with irregular more serious than bare...

This study presents a finite element model to investigate the bidirectional seismic behavior of masonry infill walls. The test data are utilized verify numerical model. comparison between analytical and experimental results indicates that can successfully predict failure mode, stiffness, strength wall. Based on model, effects aspect ratio (height length), slenderness thickness), out‐of‐plane (OOP) response wall with in‐plane (IP) damage explored. Considering ratio, wall, OOP without IP is...

Masonry infill walls should have sufficient out-of-plane stability to ensure the safety of people and performance safety-relevant components. The behaviour masonry under loading, which is caused by earthquakes due mass inertia wall, crucial overall buildings. A simplified micro non-linear three-dimensional finite-element method for simulating infills loading presented in this paper. Appropriate experimental data from literature are utilised examine capability model. parametric study using...

This paper investigates the optimum fiber reinforcement for prestressed concrete containment vessels (PCCVs) under internal pressure. To achieve this aim, steel fiber, which is most widely used type in current engineering applications, adopted to constitute fiber-reinforced (SFRC) substitute conventional PCCV. The effects of characteristic parameters, λsf, affecting significantly mechanical behavior are first taken into account. Partial or complete regions PCCV also considered be replaced by...

Masonry infilled RC frames are one of the most common structural forms, damage which, in earthquake events, usually cause serious losses. The determination seismic performance target is key foundation performance-based evaluation and design for masonry frames. In this paper, an extensive database experimental tests on loaded in-plane direction collated. According to crack propagation elastic-plastic characteristics frames, process divided into four stages, then criteria states (DS) proposed....

Pile groups are designed to sustain complex loads in various engineering. During the design of a pile group, obvious group effect should be considered for closely spaced groups. However, by different scholars varies, which makes it hard engineers consider group. In this study, finite element (FE) method is proposed advance our understanding variations effects developed researchers, based on concept soil–pile relative stiffness. The relationship between stiffness and normalized lateral...

The effects of masonry infill walls on the behaviour reinforced concrete frames are often ignored in seismic engineering. A three-dimensional non-linear finite-element model is introduced this paper to simulate in-plane and out-of-plane infilled frames. It employs a surface-based cohesive contact capture crack slide failure mode wall mortar joints. Comparison with experimental data shows that proposed numerical provides good estimates strength, deformation modes both directions. Several...

A high-pass cut-off frequency in filtering is critical to processing strong-motion records. The various procedures available nowadays are based on their own needs and not universal. Regardless of the methods, a visual inspection filtered acceleration integration displacement required determine if selected filter passband appropriate. better method use traversal search combined with frequency, which traditional method. However, this inefficient unsuitable for massive In study, convolutional...

The damage pattern of masonry-infilled reinforced concrete (RC) frame structures in earthquake events is complicated, and understanding the detailed failure behavior these modeling it accurately has been a challenging task. In this paper, extended finite element method (XFEM) introduced to reproduce arbitrary cracks initiating propagating masonry units, combined with interface elements model various behaviors RC frames. Within analysis program FEAP, user subroutine adopted for incorporation...

The in-plane seismic performance of framed masonry wall has been studied by many researchers all over the world, whereas structures subject not only load but also outof-plane simultaneously in actual events. This paper utilizes three dimensional nonlinear finite element analysis techniques to investigate eect out-of-plane on inplane behavior reinforced concrete (RC) wall. analytical results indicate that pre-applied loads alter failure mode and reduce strength infilled RC frame. When is...

The over-strength coefficient is one of the key factors for seismic safety a structure. For RC frames, infill wall may improve lateral bearing capacity, while demand increases as well, which leads to unexpected performance an infilled frame in past earthquakes. Therefore, it necessary systematically study effect frames from point capacity and demand. In this paper, 36 structures with/without walls are designed, corresponding finite element modelings, considering in-plane out-of-plane...

Abstract Based on structural experiments and a micro finite-element analysis in ABAQUS, the interaction between an infill wall RC frame under lateral loads was investigated. According to load transmission mechanism stiffness strength contribution of walls, macro-model with multiple blocks around opening (represented as double diagonal struts) proposed. The macromodel established OpenSees simulate discontinuities force paths stress states openings walls. In comparison experimental data,...

In structural response array observation, the vibration of a structure during an earthquake or from natural environment is recorded and stored using high-sensitivity strong motion seismographs, dynamic characteristics are analyzed determined random signal data processing technology. Due to use field test for analysis, this may be most accurate effective way obtain actual structure, which can further used verify accuracy theoretical experimental results, numerical simulations. Therefore,...