scholarly journals Seismic actions induced by cladding panels on precast concrete frame structures

2017 ◽  
Author(s):  
Bruno Del Lago ◽  
Francesco Foti
Keyword(s):  
Precast Concrete ◽  
Frame Structures ◽  
Concrete Frame ◽  
Cladding Panels

Dynamic load test on progressive collapse resistance of fully assembled precast concrete frame structures

2020 ◽  
Vol 214 ◽  
pp. 110675 ◽  
Author(s):  
Yun Zhou ◽  
Xiang Hu ◽  
Yilin Pei ◽  
Hyeon-Jong Hwang ◽  
Taiping Chen ◽  
...  
Keyword(s):  
Dynamic Load ◽  
Progressive Collapse ◽  
Precast Concrete ◽  
Load Test ◽  
Frame Structures ◽  
Concrete Frame ◽  
Collapse Resistance ◽  
Dynamic Load Test

Literature Review of Precast Concrete Frame Structures in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 3-6
Author(s):  
Ke Wei Ding ◽  
Xiang Zhang
Keyword(s):  
Literature Review ◽  
Seismic Behavior ◽  
Civil Engineering ◽  
Precast Concrete ◽  
Engineering Application ◽  
Frame Structure ◽  
Frame Structures ◽  
Structure System ◽  
Concrete Frame ◽  
Performance Research

As construction industrialization is springing up in our country, precast concrete frame structure,as a result,has been developing rapidly. Based on a host of articles about precast concrete frame structure system at home and abroad,it,in this paper,summarized and prospected the latest stress performance research of precast concrete frame structure and up-to-date engineering application. Further more, total assembled node and seismic behavior of precast concrete frame structure is also pointed out as what is needed to study in the future.

scholarly journals Seismic actions induced by cladding panels on precast concrete frame structures

2018 ◽  
Vol 6 (3) ◽  
pp. 1-6
Author(s):  
Bruno Dal Lago ◽  
Francesco Foti ◽  
Luca Martinelli
Keyword(s):  
Precast Concrete ◽  
Rigid Bodies ◽  
Frame Structure ◽  
Eurocode 8 ◽  
Seismic Action ◽  
Concrete Frame ◽  
Out Of Plane ◽  
Connection System ◽  
Cladding Panels ◽  
Mechanical Devices

The strong earthquakes occurred in Southern Europe in the last decade pointed out a poor seismic performance of the connection system of the cladding of precast industrial structures. The cladding of these buildings usually consists of sandwich concrete panels of remarkable mass, connected to the frame structure with mechanical devices. The estimation of the out-of-plane seismic action on these connections is a key step for their correct proportioning. However, the formulation currently provided in the Eurocode 8 for the estimation of the seismic action on non-structural elements was calibrated with different objectives. Furthermore, given there is no in-plane structure-panel interaction, a quote of the panel mass is lumped in correspondence of their connection for a correct proportioning of the frame structure. The designers need to make assumptions on both aspects that often bring to remarkably different solutions. The paper presents a consistent dynamic formulation of the problem of the vibration of rigid bodies connected with cantilever columns. The solution brings to closed-form equations to evaluate the exact out-of-plane action on the connections and the correct amount of panel mass to be lumped.

Robustness-oriented conceptual design of precast concrete frame structures

2021 ◽  
Author(s):  
Simone Ravasini ◽  
Beatrice Belletti ◽  
Emanuele Brunesi ◽  
Roberto Nascimbene ◽  
Fulvio Parisi
Keyword(s):  
Conceptual Design ◽  
Precast Concrete ◽  
Frame Structures ◽  
Concrete Frame

Study on seismic behavior reduction of typical joints for monolithic precast concrete frame structures with ages

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Qidi Zhong ◽  
Jianguo Ding ◽  
Xiangxiang Zhang ◽  
Yin Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Constitutive Model ◽  
Service Time ◽  
Precast Concrete ◽  
Time Dependent ◽  
Frame Structures ◽  
Content Type ◽  
Concrete Frame ◽  
Nonlinear Springs

PurposeMonolithic precast concrete frame structures have been promoted and developed in recent years. Owing to material deterioration and a weaker structural integrity, monolithic precast concrete frame structures may suffer from insufficient seismic capacity as service time increases. A typical joint of monolithic precast concrete frame structure is studied in this paper. The purpose of this paper is to perform numerical modeling of the typical joint subjected to low cyclic load at different ages and analyze the hysteretic behavior reduction with ages under common atmosphere environment.Design/methodology/approachExisting un-carbonated concrete, carbonated concrete and corroded rebar are all considered as deterioration factors for the typical joint, whose constitutive models are introduced into the finite element model to study. Moreover, time-dependent constitutive model of existing un-carbonated concrete and mechanical model of bond between precast and cast-in-place concrete are established on the basis of existing experimental data. Then, finite element method is used to investigate the seismic property reduction of the typical joint, where nonlinear springs are set to simulate bonding between precast and cast-in-place concrete.FindingsAnalyzing the results, the reduction of reaction force from skeleton curves of the joint is significant in the first 30 years of service time, and slows down after 30 years. Besides, the ductility, secant stiffness and equivalent viscous damping coefficient of the typical joint remain almost unchanged in the first decade, but decrease obviously after 10 years.Originality/valueThe originality of the paper consists in the following. The time-dependent constitutive model of existing un-carbonated concrete is established and used in finite element method. Besides, bonding between precast and cast-in-place concrete is considered using nonlinear springs. There is a reference value for the seismic performance assessment of existing monolithic precast concrete frame structures.

Effects of grout sleeve defects and their repair on the seismic performance of precast concrete frame structures

2021 ◽  
Vol 242 ◽  
pp. 112619
Author(s):  
Xiangmin Li ◽  
Shun Xiao ◽  
Rundong Gao ◽  
Kent A. Harries ◽  
Zhuolin Wang ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Precast Concrete ◽  
Frame Structures ◽  
Concrete Frame

scholarly journals Performance of a Ductile Hybrid Post-Tensioned Beam-to-Column Connection for Precast Concrete Frames under Seismic Loads: A Review

2021 ◽  
Vol 11 (16) ◽  
pp. 7497
Author(s):  
Khaleel Mohammed ◽  
M Jameel ◽  
Zainah Ibrahim ◽  
Chee Tan
Keyword(s):  
Precast Concrete ◽  
Nonlinear Behavior ◽  
Initial Position ◽  
Frame Structures ◽  
Seismic Loads ◽  
Restoring Force ◽  
Concrete Frame ◽  
Tension And Compression ◽  
Post Tensioning ◽  
Post Tensioned

The performance of precast concrete frame structures against seismic loads mainly depends on the beam-to-column connection. A ductile hybrid connection consists of unbonded post-tensioning steel and bonded reinforcement bars, both of which provide overall moment resistance to the frame. Post-tensioning steel acts as a restoring force which brings the structure back to its initial position upon unloading. Mild steel acts as an energy dissipator which yields in tension and compression. To evaluate the performance of precast frame structures, the structural engineer requires extensive knowledge of the complex nonlinear behavior of the connection. Standardization to mass produce is one of the benefits of precast construction, but with standardization in design there is severe risk. All previous earthquakes have clearly shown that continuous repetition of accepted practice without proper engineering review can lead to disaster. It is important to understand how different parameters of the connection influence the behavior and performance of the frame against seismic loads. The present study helps structural engineers and researchers with a detailed review of hybrid post-tensioned connections. This review is focused mainly on precast beam-to-column connections, studies on the development of hybrid connections, performance evaluations of hybrid connections, and the performance evaluation of precast frames with hybrid connections.

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