Summary of Research on Seismic Behavior of Precast Column System With the Same Effect as the Cast-In-Place Column

2018 ◽  
Author(s):  
Mi Zhou ◽  
Hang Zeng
Keyword(s):  
Seismic Behavior ◽  
Column System ◽  
Precast Column

Numerical Analysis of Seismic Behavior of Masonry Walls Confined by Precast Tie-Columns

2012 ◽  
Vol 166-169 ◽  
pp. 2429-2435
Author(s):  
Wen Wen Luo ◽  
Ying Min Li ◽  
Ni Na Zheng ◽  
Na Chen
Keyword(s):  
Numerical Analysis ◽  
Uniaxial Compression ◽  
Constitutive Relation ◽  
Seismic Behavior ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Column System ◽  
The Difference ◽  
The Cost ◽  
Better Than

In order to improve the seismic behavior of the rural masonry buildings and reduce the cost and be convenient for construction, a precast tie-column system was put forward, which was suitable for masonry buildings, constructed by fired common bricks or porous bricks. The uniaxial compression constitutive relation of brick masonry was used for simulating the precast tie-column. And this paper analyzed the difference of the seismic behavior of masonry walls which bearing different vertical compressive stress, and confined by cast-in-place tie-columns or precast tie-columns, and whether contain windows or not. The results show that the uniaxial compression constitutive relation used for simulating precast tie-column is reasonable and the seismic behavior of masonry walls confined by precast tie-columns is better than the wall without tie-colums, and equal to those confined by cast-in-place tie-columns.

A COLUMN SYSTEM WITH ARTICULATED JOINTS AND ELASTICALLY EMBEDDED DIAPHRAGMS

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Jiri Witzany ◽  
Daniel Makovicka ◽  
Radek Zigler ◽  
Tomas Cejka ◽  
Stanislav Pospisil ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Characteristics ◽  
Dynamic Testing ◽  
Seismic Effects ◽  
Load Bearing ◽  
Column System ◽  
Precast Column ◽  
Thin Walled ◽  
Natural Seismicity ◽  
Stiffness Adjustment

The spatial stability and controlled dynamic characteristics of an articulated precast column system are secured by thin-walled reinforced concrete diaphragms elastically embedded in some bays by means of special damping bearings. The intensity and the range of the load-bearing system’s response to dynamic (e.g. seismic) effects and vibrations are achieved by the stiffness adjustment of damping bearings. The stiffness of damping bearings may also be adjusted during exploitation. The designed structure with an elastically embedded diaphragm has been exposed to dynamic testing whose results are presented in the article. Another significant characteristic of the precast structure is its dry assembly and potential disassembly and relocation to another site. The experimental and theoretic analyses performed have confirmed the assumptions for the system’s application in areas with the occurrence of natural seismicity.

Experimental Verification of Demountable Precast Column System

2016 ◽  
Vol 827 ◽  
pp. 259-262 ◽  
Author(s):  
Aleš Polák
Keyword(s):  
Reinforced Concrete ◽  
Experimental Verification ◽  
Negative Impact ◽  
Point Of View ◽  
Column System ◽  
Precast Column ◽  
Repeated Use ◽  
Precast Structures ◽  
Precast Elements ◽  
Steel Joints

Relocation of existing concrete structures requires full or partial demolition, which consumes a lot of energy and thus has a negative impact on the environment. From environmental point of view, demountable precast structures are sustainable. They allow “recycling” to the level of precast elements and so they save significant amounts of energy and materials. Another advantage of these structures is quick assembly without wet processes. A characteristic component of precast reinforced concrete construction system for multi-storey buildings are demountable joints of load-bearing precast reinforced concrete elements. This paper is focused on experimental verification of demountable precast column structure and its demountable steel joints. The experimental research was carried out within TA02010837 “Multipurpose dismantleable prefabricated reinforced concrete building system with controlled joint properties and possibility of repeated use”.

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

SEISMIC BEHAVIOR OF SUPER LONG MULTI-SPAN SUSPENSION BRIDGE WITH CENTER SPAN LENGTH OF 3000M

2018 ◽  
Vol 74 (4) ◽  
pp. I_803-I_817
Author(s):  
Shingo IWASHITA ◽  
Hitoshi NAKAMURA ◽  
Kuniei NOGAMI ◽  
Yusuke KISHI ◽  
Kazuya MAGOSHI ◽  
...  
Keyword(s):  
Seismic Behavior ◽  
Suspension Bridge ◽  
Span Length
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