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요약정보
钢筋混凝土构件的大孔径静态破碎技术研究 / Soundless Cracking Technology of Reinforced Concrete Structure with Large Embedded Hole
Resource Type
Academic Journal
Authors
娄荣
;
陈威文
;
周方均
;
邢黎明
;
商圣波
;
倪晓静
;
LOU Rong
;
CHEN Wei-wen
;
ZHOU Fang-jun
;
XIN Li-ming
;
SHAN Shen-bo
;
NI Xiao-jin
Source
爆破 / Blasting
. 37(4):127-131
Subject
大孔径静态破碎
扩展有限元法
钢筋混凝土
防冲孔
模型试验
Language
Chinese
ISSN
1001-487X
Online Access
Find it @ DONGA
초록
对于钢筋混凝土临时构件的拆除,提出一种沿着轴线设置大直径预埋孔进行静态破碎的方法.基于扩展有限元方法,对某截面尺寸为500 mm×500 mm钢筋混凝土梁的静态破碎过程进行了数值模拟.模拟结果表明:裂缝沿着截面对角线方向扩展.应变能释放率结果显示静态破碎过程可分为弹性变形、裂缝稳定扩展与裂缝失稳扩展三个阶段,且拉应力为裂缝扩展的主导因素.针对大孔径静态破碎的冲孔问题,提出了一种可用于钢筋混凝土构件的防冲孔构造,进而采用足尺模型试验验证了大孔径静态破碎技术的可行性.
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