scholarly journals Study of a prefabricated structure perforated paving inlaid brick grid mat

2020 ◽  
Vol 782 ◽  
pp. 022086
Author(s):  
Yulong Li ◽  
Fan Yang ◽  
Huijie Guo
Keyword(s):  
Prefabricated Structure

The Application of Building Information Model in the Design of Precast Concrete Structures

2014 ◽  
Vol 716-717 ◽  
pp. 299-302 ◽  
Author(s):  
Er Wei Guo ◽  
Ying Xin Qian ◽  
Chen Guang Li
Keyword(s):  
Precast Concrete ◽  
Concrete Structures ◽  
Advanced Technology ◽  
Wall Structure ◽  
Building Information Model ◽  
Building Information ◽  
Reducing Costs ◽  
Prefabricated Structure ◽  
Precast Structures ◽  
Complete Process

Advantages of precast concrete structures were very obvious, these were the sign of industrialized construction, while also reducing costs, energy conservation, and improve quality. In recent years, the demand of precast concrete buildings was also increasing. BIM technology was advanced technology, the design of precast structures, such as the frame shear wall structure, was given by using BIM technology in the complete process; Design process and value of the application of the BIM technology in the prefabricated structure were analyzed, Prospects of the BIM technology using in prefabricated structures were discussed.

Reinforcement of Prefabricate Concrete Beams with Basalt-Epoxy Bars

2014 ◽  
Vol 1020 ◽  
pp. 275-279
Author(s):  
Marlena Rajczyk ◽  
Bartłomiej Stachecki
Keyword(s):  
Numerical Modeling ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Physical Parameters ◽  
Modern Engineering ◽  
New Construction ◽  
Prefabricated Structure ◽  
Reinforcement Conditioning ◽  
Made In ◽  
Composite Reinforcement

The article presents a way of reinforcing concrete beams with innovative composite materials in the form of basaltic-epoxy bars. Considering the carrying the element out in the technology of the prefabrication, the main assumptions and aims of the method and economic conditioning were described. Examples of domestic, modern engineering objects made in the prefabricated structure were expressed. The particular attention was devoted to the issue of the cover of the composite reinforcement conditioning the permanence of the ready element. In the part of the article devoted to the numerical analysis of the new construction, is characterized the most important mechanical and physical parameters of used composite bars and presented the assumptions of the method of the numerical modeling of beams subjected to clean bending. For the optimum evaluation of the element a research set was prepared in the form of the reinforced beam by composite bars, and another one by steel rods and concrete beam without the reinforcement - enabling evaluation of the correctness of the method. The analysis is opening the doors for the more accurately research on the usefulness of the composite reinforcement of the concrete prefabrication to the modern construction.

scholarly journals The concept of a prefabricated structure for protection of critical infrastructure facilities

2018 ◽  
Vol 67 (2) ◽  
pp. 133-144
Author(s):  
Kamil Sobczyk ◽  
Ryszard Chmielewski ◽  
Krzysztof Duda
Keyword(s):  
Reinforced Concrete ◽  
Computational Analysis ◽  
Critical Infrastructure ◽  
High Mobility ◽  
Dynamic Loads ◽  
Protective Structure ◽  
Internal Forces ◽  
Prefabricated Structure ◽  
Building Engineering

The paper presents the concept of a protective structure in the form of a prefabricated reinforced concrete protective dome intended for protection of a single critical infrastructure facility [1]. Unlike non-movable cast-in-place reinforced concrete structures, the protective structure can be assembled and disassembled repeatedly with the use of dedicated joining sockets. To provide the concept with a high mobility, the dimensions of single modules of the prefabricated reinforced concrete protective dome meet the transport limits dictated by the horizontal and vertical clearance of roads. A numerical computational analysis facilitated a determination of the distribution of internal forces in the protective stricture and dimensioning of the required reinforcement system [3]. The computations included standardized cases of steady and dynamic loads, and combinations thereof, complete with parameters of dynamic loads from an explosion impulse. Keywords: building engineering, protective structure, prefabricated dome

scholarly journals Slotted Beam-Column Energy Dissipating Connections: Applicability and Seismic Behavior

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Xin Zhao ◽  
Ai Qi
Keyword(s):  
Energy Dissipation ◽  
Seismic Response ◽  
Cross Sections ◽  
Material Model ◽  
Reduction Ratio ◽  
Frame Structure ◽  
Variable Cross ◽  
Good Energy ◽  
Prefabricated Structure ◽  
Controlled Structure

Energy dissipating joint can effectively strengthen the connection of prefabricated buildings. In the present study, a new slotted mild steel damper was installed at the beam end of the prefabricated structure to form as the energy-dissipating joint of the beam-column. By using ABAQUS software, a finite element (FE) analysis was conducted for the single-story-and-span of the single-frame structure with a slotted damper as energy-dissipating joint. The result shows that the damper was the first to yield in the structure and performed well in energy dissipation, indicating its reasonable design of structure and connection. The energy dissipation mainly occurred at the flange of the variable cross sections, between which beam-ribbed webs ensured the required bearing capacity and stiffness and provided a reliable connection. The hysteretic curves were obtained by analyzing the mechanical properties of the slotted damper under pure bending and pure shearing. In the OpenSees platform, the Steel02 Material model and the twoNodeLink element were used to fit the hysteretic curves; this method was employed for the parametric simulation of the slotted energy dissipation. The dynamic characteristics and seismic response of the controlled structure with slotted energy dissipating joint were also analyzed and compared with those of the uncontrolled structure in the OpenSees platform. The results show that the period of the controlled structure was prolonged and the top story acceleration decreased, indicating its effect in reducing seismic response. The shear-dependent seismic reduction ratio was about 35%, while the drift-dependent seismic reduction ratio was about 10%. The seismic performance of bottom story was better than that of the top story, and the damper has good energy dissipation performance in the bending direction. Some detailed design criteria are put forward and consequences for design on the basis of the performed simulations are shown.

Study on GFRP Reinforced Beams under Flexure

2018 ◽  
Vol 6 (7) ◽  
pp. 156
Author(s):  
R. Lathamaheswari ◽  
R. BalaKeerthana ◽  
K. Nandhini ◽  
B. Parkavi ◽  
A. Nivedha
Keyword(s):  
Raw Materials ◽  
Fine Aggregate ◽  
Atmospheric Conditions ◽  
Cement Concrete ◽  
Reinforced Polymer ◽  
Reinforced Beams ◽  
Glass Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Glass Fibre Reinforced ◽  
Prefabricated Structure

Acute shortage of raw materials and deterioration of reinforced concrete structural elements lead to implementation of new substitute materials and innovative technologies. Reinforced Cement Concrete structures are usually reinforced with steel bars which are subjected to corrosion at critical temperature and atmospheric conditions. The structures can also be reinforced with other materials like Fibre Reinforced Polymers (FRP). In this line Fibre Reinforced Polymer based reinforcement replacing conventional steel rod for a precast element of a prefabricated structure is considered. The precast member cast out of M25 grade concrete reinforced exclusively with locally produced Glass Fibre Reinforced Polymer (GFRP) bars including GFRP stirrups is designed, cast. Flexural behaviour of rectangular concrete beams reinforced with FRP bars and stirrups is examined with two specimens one with conventional sand as fine aggregate and another with quarry dust as fine aggregate. The load at cracking and ultimate, type of failure and crack patterns are observed and compared with those of conventional cement concrete.

Finite Element Analysis about Temporary Bracing of Prefabricated Column of Prefabricated Structure

2013 ◽  
Vol 275-277 ◽  
pp. 1180-1183
Author(s):  
Wan Yun Yin ◽  
Dong Chen ◽  
Xiao Yang ◽  
Ke Wei Ding ◽  
Ren Cai Jin ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lodging Resistance ◽  
Element Analysis ◽  
Finite Element Software ◽  
Support Frame ◽  
Precast Column ◽  
New Type ◽  
Prefabricated Structure

Based on the features of lifting construction of prefabricated structure, propose a new type of temporary bracing of prefabricated column, and analyze the two different structural forms of the traditional prefabricated column bracing frame and the new prefabricated column bracing frame by finite element software ANSYS. The results show that the new precast column support frame have a better stability and stronger lodging resistance

scholarly journals Survey on the Application of Prefabricated Structure in Underground Engineering

2020 ◽  
Vol 741 ◽  
pp. 012075
Author(s):  
Zhaoyang Chen ◽  
Xinqiang Gao ◽  
Xiaoyong Zhao ◽  
Fei Wang ◽  
Chao Kong
Keyword(s):  
Underground Engineering ◽  
Prefabricated Structure

Research Review on the Temporary Bracing System of Prefabricated Structure

2012 ◽  
Vol 193-194 ◽  
pp. 1261-1264
Author(s):  
Ke Wei Ding ◽  
Xiao Yang
Keyword(s):  
Research Review ◽  
Research Status ◽  
The Future ◽  
Prefabricated Structure ◽  
Bracing System

This article reviews the concept and advantages of prefabricated structure, the research status of the temporary bracing of cast-in-situ structure and the temporary bracing of prefabricated structure. Finally, the future of the temporary bracing of the prefabricated structure is also predicted.

Manufacture and prefabrication practice on a test model of a novel six-bar tetrahedral cylindrical lattice shell

2018 ◽  
Vol 22 (2) ◽  
pp. 287-296 ◽  
Author(s):  
Feng Miao ◽  
Shi-Lin Dong ◽  
Hao-Qing Liang ◽  
Xin-Tao Wang ◽  
Xie-Lian Zhu ◽  
...  
Keyword(s):  
Fine Tuning ◽  
Test Model ◽  
Projection Plane ◽  
Green Architecture ◽  
System A ◽  
Tetrahedral Unit ◽  
Structural Assembly ◽  
Prefabricated Structure ◽  
Lattice Shell ◽  
Application Requirements

A six-bar tetrahedral unit of a rhombic projection plane is a basic geometric invariable body with a simple configuration. A six-bar tetrahedral cylindrical lattice shell can be assembled by rhombic projection plane six-bar tetrahedral units with identical geometry sizes, which is conducive to standardized design, industrial production, and prefabricated construction. The popularization and application requirements of green architecture industry can also be met using such a shell. A model test of a six-bar tetrahedral cylindrical lattice shell was developed to simulate the practical application of the prefabricated structural system. A new type of joint for the prefabricated structure was proposed that is easy to assemble and is lightweight. A tridimensional fine-tuning bed jig was developed to ensure the manufacturing precision of the pre-made six-bar tetrahedral units. Stacking and transport of the units were practiced. The assembly process from units to the integral shell was conducted in an experimental hall; the result testified the advantages of easy stack, convenient transport, and highly efficient fabrication. The structural assembly errors of the shell were measured, and the measurement results verified the installation accuracy of the test model. This practical study lays the foundation for further engineering applications of six-bar tetrahedral cylindrical lattice shells.

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