種別 | paper |
主題 | FAILURE CRITERIA AND OF CONCRETE SLABS NONLINEAR DYNAMIC ANALYSIS UNDER IMPULSIVE LOADS |
副題 | |
筆頭著者 | Michael William King(Kobe University) |
連名者1 | Ayaho MIYAMATO(Kobe University) |
連名者2 | Hiroki MASUI(Kobe University) |
連名者3 | |
連名者4 | |
連名者5 | |
キーワード | |
巻 | 12 |
号 | 2 |
先頭ページ | 859 |
末尾ページ | 864 |
年度 | 1990 |
要旨 | INTRODUCTION Understanding the ultimate behaviors of concrete structures under impulsive loads can be considered as a first step forward towards designing impact resistible structures. In this study, an analytical method based on the layered finite element procedure with provision for material nonlinearity, elasto-plasticity, cracking in concrete elements and the loading and unloading phenomena is proposed for studying the ultimate behaviors and failures mechanisms of concrete slabs under impulsive loads. A triaxial failure criterion is also applied in the analysis to consider the various failure modes associated with impulsive loadings. Verification of the analytical procedure is carried out through comparisons with experimental results. CONCLUSIONS The main conclusions from this study can be summed up as: (1) The layered finite element method together with the Ottosen failure model and the Drucker-Prager plastic potential is capable of giving very good predictions of the ultimate behaviors for RC slabs under impulsive loads. The failure mechanisms predicted agree very well with the experimental results. (2) The failure modes for RC slabs under soft impulsive loads, i.e., bending failure and punching shear failure, can be predicted based on the following analytical results: deflections in the transverse and longitudinal directions, and the impulsive load-deflection curves from zero to ultimate impulsive load. |
PDFファイル名 | 012-01-2145.pdf |