## 1 Introduction
The development of new precast structures has always been a key interest for researchers in the field of structural engineering, which is the subject of extensive experimental research and theoretical analysis. The seismic behavior of floor diaphragms and pinned beam-column connections in a multi-storey precast building has been addressed experimentally. Dry mechanical connections were adopted to realize the joints between floor-to-floor, floor-to-beam, wall-to-structure, column (and wall)-to-foundation, and beam-to-column. The results demonstrated that the proposed new beam-to-column connection system was a viable solution for enhancing the response of precast reinforced-concrete (RC) frames subject to seismic load [5]. A novel prestressed precast reinforced concrete beam-to-column joint was presented. The beam ends adjacent to the column were reinforced with a steel jacket to prevent concrete from spalling. Steel strands were used to provide the joint with a self-centering capacity. Replaceable mild steel bars provided the joint with an energy dissipation capacity. The effectiveness of the proposed joint was investigated via experimental tests. The obtained results demonstrated the beneficial properties of the joint in terms of strength and deformation capacity, control of story drift, easy reparability, and prevention of beams and columns from damage [6]. Two precast and two monolithic concrete joints for exterior beam-to-column connections were tested under cyclic loading. The installation of precast specimens was prepared using the dry-type method, whereas the monolithic joints were cast in situ. The results showed that the precast joints performed a satisfactory resistance to seismic loads [7]. To enhance the earthquake resistance of emulative precast concrete (PC) panels, two potential methods were studied. First, by using the reduced rebar area, the PC panel at the wall bottom was weakened to develop a plastic hinge zone in the PC panel rather than at the panel joints. Second, a hybrid wall was considered, where cast-in-place concrete was used for the plastic hinge zone at the bottom panel. Four specimens, including an ordinary RC wall, were tested under cyclic loading. The test results revealed that gap opening and shear slip at the panel joints were prevented by using the proposed methods [8]. The lateral load behavior of two, 0.40-scale hybrid precast concrete shear wall-test specimens was evaluated to emulate monolithic cast-in-place RC shear walls. The results demonstrated the potential for the use of precast walls in seismic regions [9]. The seismic performance of the precast structure of a frame-supported multi-ribbed composite wall with a large space at the bottom was studied under cyclic loading. The results showed that the structure, as a whole, provided extraordinary seismic performance because of the unique layer-by-layer embedded design of the wall [10; 11; 12]. Experimental and analytical studies were performed to examine the structural behavior of precast foam concrete sandwich panels (PFCSP) under vertical in-plane shear loads. Six full-scale PFCSP specimens, varying in heights, were developed to study an important parameter such as the slenderness ratio (H/t). The results showed that the PFCSP wall was a potential alternative to the conventional load-bearing wall system [13]. A 1/3-scale model of a five-story self-centering precast reinforced concrete frame with shear walls was designed and tested on a shake-table under a series of bi-directional earthquake excitations of increasing intensity. The results demonstrated that seismic performance of the test specimen was satisfactory in the plane of the shear wall [14]. Experimental and numerical results was presented for full-scale Blockhaus shear walls subjected to in-plane lateral loads. It was interesting to notice that this deformation limit largely exceeds the ultimate lateral displacement of light-frame shear walls or masonry filled timber-framed walls under in-plane lateral loads [15].