Precast reinforced concrete shear walls: State of the art review

Abstract

Expeditious urbanization and population rise around the globe has fostered the need of speedy and efficient construction, thus generating immense pressure on the construction industry to introduce an efficacious construction technique. The issue can be addressed by precast technology, which is advantageous over conventional monolithic construction in regards to speed, safety, and quality control along with reduced construction cost on mass scale production. However, precast reinforced concrete (RC) buildings have experienced severe damage during the past earthquakes, attributed to seismic behavior of connections between components. Thus, it is of utmost importance to improve the joint connection details and deploy seismic resisting features in precast buildings, such as provision of precast shear walls. Researchers across the world have performed extensive experimental studies to evaluate the response of precast RC walls under lateral loading. This paper reviews on general concepts, codal provisions, precast RC wall connections, review of experimental findings, and effect of post‐tensioning on precast RC walls.

Wall to Wall Horizontal Connection for Precast Concrete Structures

“…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.…”

“…Furthermore, the joint consists of loop-shaped rebar anchorages into wall panel during casting of precast wall panels and cast in situ concrete to form an integrated wall. As loop shaped bars are protruding out from the connected part of precast wall by lap splicing in the intermediate joint, the connection is activated once the joint is grouted by cast in situ concrete or mortar [11]. The purpose of loop-shaped anchorage is to decrease the length of lapping rebar [2].…”

“…Therefore, the assembly process mainly depends on the connection between the precast components to ensure the load transfer between the connected parts and secure the structural integrity of the complete structure. On the other hand, the main function of precast connection is to transfer the forces between the connected parts of precast components to obtain structural interaction of structural elements once the structural system is loaded [11]. Thus, the connection is regarded an essential part of the structural system as the stability of the structure mainly relies on the performance of the connection.…”

Seismic performance assessment of two‐storey precast reinforced concrete building

“…Despite the increasing growth of precast construction, it is often looked upon with skepticism due to lack of knowledge about its seismic behavior. 1 Failure of connections, insufficient diaphragm action by precast slabs and roof system, insufficient ductility of columns are often the major causes of failure of precast buildings during earthquake. [2][3][4] Generally, precast beams and columns are connected with dry moment-resisting connections, castin-place and welded connections.…”

Experimental investigation on the hysteretic behavior of precast concrete walls with energy‐dissipated dry connections

“…Because of the relatively large in‐plane depth of the wall members, a considerable lateral stiffness, strength and deformation capacity are provided. Recent investigations have revealed that precast structural systems can effectively reduce carbon emissions, waste generation, onsite frameworks and labor, and construction time cycles and improve quality control to a certain extent 1–3 . PC members are manufactured in standardized factories, installed in construction sites, and assembled via liable connections.…”