Abstract
Precast buildings have been widely used owing to its outstanding features. As these buildings consist of a combination of various components, the mechanical properties of the connections play a critical role in the overall performance of the structure, particularly the vertical connections in shear wall members. A new connection called ring joint is proposed for precast buildings, and test pieces were designed to analyze the anchor performance. The damage phenomena and test data were observed and recorded. The displacement, force, and strain were analyzed, and the results indicated that the anchor length was a key factor and the connection was safe and reliable under reasonable design. Numerical analysis was conducted to explore the mechanical mechanism, and a bearing capacity model was proposed combining the bond and dowel effects simultaneously. Anchor length was determined based on reliability analysis under various conditions, and other suggestions were proposed. All these could guarantee the mechanical properties of the connection, as well as safety and reliability, and promote the popularization and application.
Highlights
The industrialisation of buildings is the future direction for the development of the construction industry, and this transformation will allow for sustainable development of the construction industry.Prefabricated shear wall structure systems are widely used in high-rise buildings, which can reduce resource consumption and facilitate environmental protection
The concrete grade should be based on the structural thethe grade in the area should one level thanhigher the components structural design, design,and and grade inconnection the connection area be should be higher one level than the components to ensure the stiffness requirements are met. All of these recommendations ensure the mechanical properties of the connection are optimal and promote the application of the ring joint
Experimental and numerical analysis were carried out to analyze the bearing to ensure the stiffness requirements are met
Summary
The industrialisation of buildings is the future direction for the development of the construction industry, and this transformation will allow for sustainable development of the construction industry.Prefabricated shear wall structure systems are widely used in high-rise buildings, which can reduce resource consumption and facilitate environmental protection. The connections are critical for the mechanical performance of the structure in meizoseismal areas [1], the vertical connection of the components, the quality and reliability of the connection are crucial to the architecture. Various precast building connection methods have been proposed by scholars, and their tensile properties have been evaluated, including grouted sleeve connections, etc. Research has shown that the bearing capacity is affected by the grouted sleeve strength, grout strength, rebar diameter, and bond strength [11]. The bond strength of the grout and rebar plays a key role in determining the bearing capacity, and has attracted the attention of researchers. A plug-in filling hole for lap-joint steel bars, was tested considering the rebar diameter, anchor length, and concrete strength, and the results indicated that the connection was reliable [14]
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