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[1]程旭东,朱兴吉,胡晶晶,等.LNG 储罐预应力混凝土外罐应力分布与裂缝形态[J].油气储运,2011,30(10):746-749.[doi:10.6047/j.issn.1000-8241.2011.10.008]
　Cheng Xudong,Zhu Xingji,Hu Jingjing,et al.Stress distribution and crack form of the prestressed concrete outer tank of LNG tank[J].Oil & Gas Storage and Transportation,2011,30(10):746-749.[doi:10.6047/j.issn.1000-8241.2011.10.008]
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LNG 储罐预应力混凝土外罐应力分布与裂缝形态

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 30 期数: 2011年10期 页码: 746-749 栏目: 出版日期: 2011-10-25
Title:
Stress distribution and crack form of the prestressed concrete outer tank of LNG tank
文章编号:
1000-8241（2011）10-0746-04
作者:
程旭东; 朱兴吉; 胡晶晶; 于晓玮
中国石油大学（华东）储运与建筑工程学院，山东青岛 266555
Author(s):
Cheng Xudong; Zhu Xingji; Hu Jingjing; et al
Cheng Xudong：College of Pipeline and Civil Engineering，China University of Petroleum，Qingdao，Shandong，266555.
关键词:
LNG 储罐; 混凝土; 非线性; 裂缝; 破坏形态
Keywords:
LNG storage tank; nonlinear of concrete; concrete crack; failure modes of LNG tank
分类号:
TE85
DOI:
10.6047/j.issn.1000-8241.2011.10.008
文献标志码:
A
摘要:
LNG 储罐的外罐主要是由预应力混凝土建造而成，混凝土作为一种复杂的非线性材料，其受力特点为抗压不抗拉。应用ADINA 有限元软件，建立钢筋混凝土分离式模型，通过应力云图及裂缝开展图，研究LNG 储罐在正常使用状态及内罐完全泄漏状态下预应力混凝土的应力分布、裂缝开展情况及破坏形态。结果表明：在正常使用状态下，外罐上下两固定端第一主应力最大；在内罐泄漏状态下，底部约1/4 高度第一主应力最大，此三处为外罐最易产生裂缝的部位，破坏形态均为混凝土受拉破坏。研究结果为国内LNG 储罐的自主设计与建造提供了理论依据。
Abstract:
The outer tank of LNG storage tank is mainly composed of the prestressed concrete，and as a kind of complex nonlinear
material，the concrete’s load feature is compressive and no-tensile.LNG tanks is a typical kind of pressure vessel，especially the
large-scale LNG tanks.The research on stress distribution and crack development of concrete outer tank is of significance.With
the finite element software ADINA，the separated model of reinforced concrete is established.With the stress cloud picture and
crack development figure，under the conditions of LNG storage tank in the normal running and total leakage state，the research
on the stress distribution of the prestressed concrete，crack development situation and its failure pattern is carried out.The result
shows that the first principal stress at the two fixed ends is the largest in normal running condition，the first principal stress at a
quarter height distance from the bottom is the largest in total leakage state of inner tank，and the three locations are the most
vulnerable to crack，and their failure pattern is concrete tensile failure.The result provides a theoretical basis for independent
design and construction of domestic LNG tank.

参考文献/References:

[1]王伟玲. 大型LNG 预应力储罐静力荷载下受力性能研究[D].大庆：大庆石油学院，2009.
[2]佟洪江. 钢筋混凝土构件的非线性分析[D]. 大连：大连理工大学，2009.
[3]黄晶. 钢纤维高强混凝土预应力扁梁框架结构的拟静力抗震性能研究[D]. 福州：福州大学，2003．

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备注/Memo

程旭东，副教授，1971 年生，1994 年博士毕业于中国石油大学（华东）工业与民用建筑专业，现主要从事土木工程和油田地
面工程结构方面的教学与科研工作。电话：0532-86981137；Email：chengxd@upc.edu.cn（收稿日期：2010-12-15）

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