Study on Seismic Performance and Damage Analysis of Steel Plate Shear Wall with Partially Encased Composite (PEC) Columns

Abstract

A steel plate shear wall often uses partially encased composite (PEC) columns instead of edge frame columns. Such a steel plate shear wall not only bears the gravity load of the structure and resists the bending moment caused by lateral force by taking advantage of the high bearing capacity and bending stiffness of PEC columns, but also effectively anchors with the frame column to counteract the tension field generated by the steel plate. Therefore, the performance of the steel plate shear wall after buckling can be fully exerted and the seismic performance of the structure can be improved. In order to investigate the seismic performance of the structure, a 1/3-scale specimen test of steel plate shear wall with PEC columns is designed and fabricated, and a finite element model is established with the same size of test. It is found that the test and simulation results are in good agreement, which confirms the reliability of the simulation. Subsequently, 20 models with different parameters of steel plate shear wall with PEC columns are analyzed using ABAQUS. Finally, the failure mode, hysteretic behavior, skeleton curve, and bearing capacity of steel plate shear wall with PEC columns are obtained. The results show that PEC columns have a good anchoring effect on the diagonal tension field and can fully exert the plasticity of the infill steel plate, so that steel plate shear wall with PEC columns has superior seismic performance. Experiments also reveal that the crack type of damages appear in a steel plate shear wall with PEC columns, and, as a future work, the authors will explore the use of structural health monitoring methods, such as piezoceramic transducer-based method, to monitor such cracks.

Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames

“…For load case 2, in order to clarify whether the proposed formulas in Section 5 are suitable for the beam ends at the middle joints, Tables 4 and 5 compare the R F and R I by the proposed formulas and the calculated values R F and R I by FE models of middle joints with different URSP connector lengths. Since almost all the results are similar to the theoretical results based on the formulas proposed in this study, Equations (8) and (9) for the side joints can also be suitable for the structural design of middle joints. Notes: R F , and R F are calculated by the proposed Formula (8) and FE models of middle joints in Figure 21b.…”

“…Since almost all the results are similar to the theoretical results based on the formulas proposed in this study, Equations (8) and (9) for the side joints can also be suitable for the structural design of middle joints. Notes: R F , and R F are calculated by the proposed Formula (8) and FE models of middle joints in Figure 21b. Notes: R I , and R I are calculated by the proposed formula (9) and FE models of middle joints in Figure 21b.…”

“…In Section 5, the simplified design formulas for calculating the amplification factor of the cracking load R F and the ratio of the stiffness amplification coefficient of the composite frame R I for the side joint are proposed, as expressed in Equations (8) and (9). As for the middle joints, the beam end at one side is subjected to the ultimate sagging moment, and the other side is subjected to the ultimate hogging moment, as shown in Figure 21a.…”

“…In recent decades, steel-concrete composite structures, such as concrete-filled steel tubes (CFST) [1][2][3], steel-plate concrete beams [4][5][6], partially encased composite (PEC) columns [7][8][9][10], and steel-concrete composite frames [11,12], have received much attention [13][14][15]. Among them, the steel-concrete composite frame is currently a widespread structural system in multistory and high-rise buildings since it combines the advantages of both steel and concrete frames, thus leading to, in many cases, a reduction of costs and optimization of the structural performance [16,17].…”

Structural Damage Detection and Health Monitoring

“…Some examples of research directed towards better understanding of structural behavior in this special issue include the modeling of various structural responses to normal and disaster level loads. Researchers have worked on modeling the behavior of structural components such as columns and shear walls [16,17], as well as different types of transportation infrastructure such as roads, railways, tunnels, and bridges [18][19][20][21][22]. In areas prone to typhoons, researchers modeled the behavior of high-rises to strong winds [23,24].…”