scholarly journals STRUCTURAL DESIGN METHOD WITH WALL-LENGTH RATIO EVALUATION FOR PRECAST REINFORCED CONCRETE WALL PANEL HOUSES BASED ON CRLS

Author(s):  
Junji OSAKI ◽  
Hiroshi KURAMOTO ◽  
Takanori KAWAMOTO
2015 ◽  
Vol 5 (1) ◽  
pp. 15-22 ◽  
Author(s):  
M. Fofiu ◽  
A. Bindean ◽  
V. Stoian

Abstract The Precast Reinforced Concrete Wall Panel (PRCWP) presented in this paper is part of an experimental study regarding the seismic performance of precast reinforced concrete wall panels, strengthening strategies and investigation on the weakening induced by modifying the opening in these elements due to architectural demands, change of function of buildings or other reasons. The element presented is 1:1.2 scale typical Reinforced Concrete Wall Panel with a window opening used in Romania, in which the opening was changed to a door opening due to comfort considerations. The specimen was subjected to cyclic loading with the lateral loads being applied in displacement control of 0.1% drift ratio. This simulates the shear behaviour of the element. After testing the unstrengthen element we proceed to retrofit it using Carbon Fibre Strips anchored with Carbon Fibre Mash. The purpose of the paper is to present the strengthening strategy and restore the initial load bearing capacity of the element or even increase it. The experimental results of strengthen and unstrengthen specimens will be presented.


2015 ◽  
Vol 660 ◽  
pp. 208-212 ◽  
Author(s):  
Mihai Fofiu ◽  
Andrei Bindean ◽  
Valeriu Stoian

This paper presents the retrofitting procedure used on a precast reinforced concrete wall panel (PRCWP) in order to restore its initial load bearing capacity. The specimen used in this experimental test is one from the residential multistoried buildings constructed in Romania from the 1970 onwards. All of the characteristics of the element are from the specific era, only scaled down with a factor of 1:1,2. The element was subjected to in-plane reversed cyclic loading to simulate its seismic behavior and obtain its maximum load bearing capacity. After the test we retrofitted the element using Carbon Fiber Strips Externally Bonded (EBR) and anchored with Carbon Fiber Reinforced Polymers (CFRP) mesh. The porpoise of the paper is to compare the maximum loading bearing capacity of the unstrengthen and strengthen elements in order to compare them and examine the efficiency of this retrofitting procedure.


2021 ◽  
Vol 109 ◽  
pp. 27-33
Author(s):  
Jiří Gerö

The facade of the old school is registered in the list of cultural monuments and located in the conservation zone of the urban monument reservation. Due to the construction of a new building, it was necessary to reinforce and structurally support (by means of an anchored reinforced concrete wall) the south wing of the old section of the school. No fissures were allowed to develop because they could damage the valuable art nouveau facades. Therefore, great emphasis was given to the technological and structural design of the reinforced concrete gunite wall. Precise geodetic measurements confirmed that the decline of the south wing of the school of the gunite wall was minimum, specifically 1,5 mm, after the completion. No cracks appeared. The building won first place in the “Building of the South Moravian Region” competition in 2018 in the category of public utilities in the Czech Republic – see www.gero.cz.


2011 ◽  
Vol 94-96 ◽  
pp. 1216-1221
Author(s):  
Li Jun Dou ◽  
Min Zhang ◽  
Jiu Yang Li

This paper analysised the mechanical characteristics of precast reinforced concrete wall,introducing a fitting that can sliding along two directions and rotate round the last direction.It realized the flexible connection between the precast reinforced concrete composited wall and the structure beam,and make the hypothesis of wall not exposed to structural force come true。The paper analysised the mechanical characteristics of node fitting,sponsored design method,and explained the designation by an example.


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