Simplified Analytical Methods for Prefabricated Concrete Wall Panel Building System with Alveolar-Type Joints

Abstract

This paper presents a type of prefabricated concrete wall panel building system with novel flexible alveolar-type joints, which has the advantages of fast assembly and controllable quality. Seven alveolar-type joint specimens were designed and fabricated to investigate the influence of the axial compression ratio, the size of the joint (in the interface contact area), and the strength of the mortar on the joints’ performance. The shear–slip constitutive model of the alveolar-type joints was established on this basis. The accuracy of the constitutive model was verified by comparing two full-scale loading tests with the exact finite element analysis model of ABAQUS. A finite element model of a multi-story apartment building was established by using the aforementioned shear–slip constitutive model; thus, the simplified analysis method for the prefabricated concrete wall panel building structure with alveolar-type joints was proposed. It was concluded that increasing the axial compression ratio, mortar strength, and size of the joints could increase the shear-bearing capacity by different degrees and that the 50 mm depth joint could increase the capacity by 18.6%. The proposed shear–slip constitutive model simulated the interface mechanism well by comparing the test results. Furthermore, the simplified analytical methods of the integral structure were in good agreement with the FEA results.

A Comparative Review of Recent Research Progress in Prefabricated Buildings in China and Other Countries

“…This introduction sets the stage for a detailed exploration of prefabrication, focusing on scholarly pursuits that delve into the intricacies of prefabricated concrete wall panel building systems, mortise-and-tenon joints, and other innovative methodologies. Xiao's [49] study takes center stage, offering a comprehensive investigation into a prefabricated concrete wall panel construction system featuring alveolar-type connections. The research places particular emphasis on aspects such as fast assembly and controllable quality, and its findings, encompassing the design and fabrication of joint specimens, establishment of a shear-slip constitutive model, and proposal of a simplified analytical method, contribute significantly to the growing body of knowledge in this field.…”

Experimental and Numerical Investigation of the Shear Performance of an Innovative Keyway Joint for Prefabricated Concrete Wall Panels

“…Alternatively, reinforcement measures or detection methods from other civil engineering fields can be applied to horizontal joints [30][31][32][33]. Xiao et al [34] introduced a novel alveolar-type joint for prefabricated concrete wall panels and examined various parameters, like the axial compression ratio, joint size, and interface mortar strength, to evaluate their impacts on the performance of the horizontal joints. Cheng et al [35] proposed a novel bolted C-shaped steel plate for the horizontal joints of precast shear walls and investigated the mechanical performance of precast shear wall structures under reversed cyclic loading.…”