同济大学学报（自然科学版）2026，Vol.54Issue(1)：65-75,11.DOI:10.11908/j.issn.0253-374x.24305
承插式连接桩基承台冲切性能试验
Experimental Study on Punching Shear Behavior of Pile Caps with Socket Connections
摘要
Abstract
To investigate the influence of socket connections on the punching shear behavior of pile caps.Experimental tests were conducted on 1 cast-in-place(CIP)pile cap and 3 socket connection(SC)pile caps with varying embedment depths and reinforcement configurations.The punching shear performance of SC pile caps was compared with that of the CIP counterpart,and the effects of embedment depth and U-shaped reinforcement on punching shear capacity were examined.Additionally,the existing code formulas for estimating the punching shear capacity of SC pile caps were evaluated and modified based on the test results.The results indicate that SC pile caps exhibit a damage development similar to that of the CIP,albeit with a 6.75％to 7.85％reduction in punching shear capacity.Increasing the embedment depth and incorporating U-shaped reinforcement have minimal impact on vertical load-displacement behavior and punching shear strength of SC pile caps.The study highlights the inadequacy of existing code formulas in capturing the variation of punching shear strength with respect to different embedment depths and reinforcement arrangements.A modified strut-and-tie model is proposed,demonstrating its ability to provide reasonable predictions of the punching shear strength for SC pile caps.关键词
桩基承台/承插式连接/承插深度/配筋形式/冲切承载力Key words
pile cap/socket connection(SC)/embedment depth/reinforcement arrangement/punching shear strength分类
交通工程引用本文复制引用
张鹏辉,端木祥永,王志强..承插式连接桩基承台冲切性能试验[J].同济大学学报（自然科学版）,2026,54(1):65-75,11.基金项目
国家自然科学基金(51978511,51778470) （51978511,51778470）
