New Precast Wall Connection Subjected to Rotational Loading

Taheri, Hafez; Hejazi, Farzad; Vaghei, Ramin; Jaafar, Mohd Saleh; Ali, Abang Abdullah Aabang

doi:10.3311/ppci.8545

Cited by 15 publications

(14 citation statements)

References 19 publications

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“…In the current decade, few types of wall to wall horizontal connections have been introduced to the construction industry such loop connection, wire loop and U-shape steel channel. The structural behaviors of loop connection have been investigated by [2,11,13,17] in terms of anchorage length, bonding and tensile. The section is to shed the light on types of precast wall to wall horizontal connections and their structural behaviours.…”

Section: Types Of Wall To Wall Horizontal Connectionmentioning

confidence: 99%

“…In loop connection, the overlapping area of the U-bar loops, the spacing of the loops, the strength of the joint material and, finally, the transverse reinforcement in the overlapping area influence the tensile capacity [13]. Therefore, the preferred mode of failure for the loop connection is yielding of reinforcement rather that crushing of mortar.…”

Section: A Loop Connectionmentioning

confidence: 99%

“…Therefore, the preferred mode of failure for the loop connection is yielding of reinforcement rather that crushing of mortar. Thus, to obtain a strong connection, the overlapping loop area is reinforced and the joint area is grouted on-site with a concrete or a mortar and the connection is preferably designed for reinforcement yielding and not concrete failure [13]. Furthermore, the ductility and redundancy of precast concrete wall should be considered in the design process to decrease costs and ensure serviceability of precast concrete structures in seismic regions as horizontal joints at the floor level are considered as weak links in a structural system, [15].…”

Section: A Loop Connectionmentioning

confidence: 99%

See 2 more Smart Citations

Wall to Wall Horizontal Connection for Precast Concrete Structures

2019

IJRTE

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Precast concrete wall is one of the prefabricated components of high demands in the construction industry especially in residential buildings as it combines the benefit of rapid speed of construction, good quality control and minimum labour intensity at the construction site. Precast wall is produced in forms of wall panels and connected in the construction site to form an integrated structural element called precast concrete wall. However, the connection of wall panels is a key factor as it provides the structure integrity and robustness of the overall structural system. Therefore, this paper aims to describe and summarize types of precast wall-to-wall horizontal connection in terms structural behaviours such as embedded length, bonding stress, seismic behaviours and modes of failure. A total number of ten (10) out of eighteen (18) papers will be reviewed and discussed. The findings show that loop connection is suitable for seismically stabile zones as it is not capable to withstand lateral load action effectively whereas wire rope connection has insufficient ductility as the load -carrying capacity is governed by yielding of the lock bar and crushing of the joint mortar. Furthermore, U-shaped steel channel connection, the connection was developed for seismic zones. Providing U-shaped rubber in between the U-shape steel channel has made the connection more flexible with energy dissipater system. Keywords: Precast concrete wall-to-wall connection; structural behaviours of precast wall-to-wall horizontal connections; mode of failure of precast wall-to-wall horizontal connections.

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Section: Types Of Wall To Wall Horizontal Connectionmentioning

confidence: 99%

Section: A Loop Connectionmentioning

confidence: 99%

Section: A Loop Connectionmentioning

confidence: 99%

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Wall to Wall Horizontal Connection for Precast Concrete Structures

2019

IJRTE

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“…Wei proposed a vertical connection joint with a flange section steel for shear walls. From an economic point of view, the flange plate should not be arranged over the full length of the wall . A new connection method to improve the rotational loading capacity of shear wall is proposed, and specialists established a numerical model of assembled walls by considering all of the details of the different components .…”

Section: Introductionmentioning

confidence: 99%

“…From an economic point of view, the flange plate should not be arranged over the full length of the wall. [27] A new connection method to improve the rotational loading capacity of shear wall is proposed, and specialists established a numerical model of assembled walls by considering all of the details of the different components. [28] A ductile connection of U-shaped steel plate has been applied in the United States.…”

mentioning

confidence: 99%

Experimental and shear bearing capacity studies of the assembled composite wall with bolted connections

Huang

Miao

et al. 2020

Structural Design Tall Build

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Summary To realize the dry connection of an assembled composite wall structure, a bolted connection based on the horizontal joint of an assembled composite wall is proposed. Five specimens were designed under monotonic loading. The failure modes, the seismic performance of the specimens, and the strains and slip of the connectors were studied. The plate thickness and the high‐strength bolts diameter are the key points of research. Moreover, the finite element model for experiment is also established, and the parameters are analyzed based on the numerical models. The results of the experiments and the simulations show that the bolted connection is feasible and the specimens have good deformation capacity. Increasing the plate thickness can improve the bearing capacity of the specimens. Finally, the formula for the shear bearing capacity of the specimen is obtained.

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Seismic Behaviour of Prestressed and Normal Reinforcement of Communication Tower with Ultra-High Performance Concrete, High Strength Concrete and Normal Concrete Materials

et al. 2018

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Nowadays, advances in telecommunications and broadcasting have led to the implementation of communication towers for installing network equipment. These towers are designed to go as high as possible in order to cover large area and avoid obstructions. However, there exist many challenges faced by engineers in relation to design of the tall and slender structures such as the complexity configuration of the structure. The nonlinear dynamic analysis is the only method that describes the actual behaviour of a structure during earthquake. Therefore, this study aims to investigate the behaviour of ultra-high performance concrete (UHPFC), high-strength concrete (HSC) and normal concrete communication tower with 30 m height located in Malaysia under seismic excitation. Also, to provide strength, stiffness and stability for the slender structures due to their sensitivity to dynamic load such as earthquake and vibration forces. For this propose, the finite element model of the tower is developed and time history analysis of communication tower under seismic load was conducted. In addition, the effect of using prestress instead of conventional reinforcement was investigated. The result indicated that prestressing of tower had lesser effect on the lateral displacement of tower under earthquake excitation. Although, the tower with UHPFC and HSC material shows lower lateral peak displacement against earthquake load compared to the normal concrete, which led to the increase in the use of these materials in lateral stiffness of the tower structure.

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New Precast Wall Connection Subjected to Rotational Loading

Abstract: Abstract

Cited by 15 publications

References 19 publications

Wall to Wall Horizontal Connection for Precast Concrete Structures

Wall to Wall Horizontal Connection for Precast Concrete Structures

Experimental and shear bearing capacity studies of the assembled composite wall with bolted connections

Seismic Behaviour of Prestressed and Normal Reinforcement of Communication Tower with Ultra-High Performance Concrete, High Strength Concrete and Normal Concrete Materials

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