Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads
作者机构：Department of Civil and Environmental EngineeringImperial College LondonLondon SIV72AZUK
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2020年第14卷第2期
页 面：331-356页
核心收录：
学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学]
主 题：non-linear numerical modelling concrete damage plasticity RC flat slabs shear-heads punching shear
摘 要：This paper examines the structural response of reinforced concrete flat slabs,provided with flillyembedded shear-heads,through detailed three-dimensional nonlinear numerical simulations and parametric assessments using concrete damage plasticity *** of the adopted nonlinear finite element procedures are carried out against experimental results from three test *** gaining confidence in the ability of the numerical models to predict closely the full inelastic response and failure modes,numerical investigations are carried out in order to examine the influence of key material and geometric *** results of these numerical assessments enable the identification of three modes of failure as a function of the interaction between the shear-head and surrounding *** on the findings,coupled with results from previous studies,analytical models are proposed for predicting the rotational response as well as the ultimate strength of such slab *** recommendations are also provided for the design of shear-heads in RC slabs,including the embedment length and section *** analytical expressions proposed in this paper,based on a wide-ranging parametric assessment,are shown to offer a more reliable design approach in comparison with existing methods for all types of shear-heads,and are suitable for direct practical application.
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