拱形波纹钢屋盖增强方法
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摘要
拱形波纹钢屋盖是一种典型的冷弯薄壁空间钢结构,应用范围广泛,具有诸多优点。但其承载力不高,刚度较低,适用的跨度范围有限。提出了一种结构增强方法,介绍了增强措施及特点,采用ABAQUS软件包建立了增强结构的有限元模型,针对不同跨度、矢高及荷载工况,分析了增强前后结构的极限承载力和变形,并进行了比较。结果表明:增强方法显著提高了拱形波纹钢屋盖的极限承载力和刚度,具有一定的适用价值。
Arched Corrugated Steel Roof(ACSR) is a typical cold-formed thin-wall space steel structure,which has many advantages and widespread applying ranges.But its bearing capacity is not high and the rigidity is small,resulting in the limited span scopes.An ACSR strengthening method is suggested.The strengthening steps as well as corresponding characteristics are introduced.Finite element models with different spans,rises and load cases of the strengthened structures were built by means of the ABAQUS software.The ultimate bearing capacities and deformation of the strengthened ACSR were analyzed and compared with the ordinary ACSR.The analysis results indicate that the ultimate bearing capacities and rigidities of the strengthened ACSR are enhanced remarkably.The strengthening method for ACSR has some certain application value.
Arched Corrugated Steel Roof(ACSR) is a typical cold-formed thin-wall space steel structure,which has many advantages and widespread applying ranges.But its bearing capacity is not high and the rigidity is small,resulting in the limited span scopes.An ACSR strengthening method is suggested.The strengthening steps as well as corresponding characteristics are introduced.Finite element models with different spans,rises and load cases of the strengthened structures were built by means of the ABAQUS software.The ultimate bearing capacities and deformation of the strengthened ACSR were analyzed and compared with the ordinary ACSR.The analysis results indicate that the ultimate bearing capacities and rigidities of the strengthened ACSR are enhanced remarkably.The strengthening method for ACSR has some certain application value.
引文
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[13]庄茁.ABAQU S有限元软件6.4版入门指南[M].北京:清华大学出版社,1998.
[2]CECS167:2004,拱形波纹钢屋盖结构技术规程[S].
[3]郭彦林,郑浩然.彩板波形拱壳屋面结构折曲屈曲试验研究[J].工业建筑,1997,(11):31-34.
[4]李少甫.冷弯折皱薄壁拱壳轻钢房屋[J].建筑结构,1998,(1):24-26.
[5]王小平.大跨度金属拱型波纹屋顶试验研究与有限元分析[D].武汉:武汉工业大学,1999.
[6]张勇.金属拱型波纹屋盖结构分析、设计理论和试验研究[D].天津:天津大学,2000.
[7]杨维国,徐国彬.冷弯折皱薄壁拱壳轻型钢结构在风荷载下的动力响应[J].空间结构,2000,(2):44-49.
[8]谭成冬,王元清,石永久,等.拱型波纹钢屋盖动力特性分析[J].四川建筑科学研究,2004,(2):4-6.
[9]王小平,蒋沧如,胡春宗,等.拱形波纹钢屋盖动力特性测试及分析[J].地震工程与工程振动,2005,(5):114-118.
[10]杨安蓉.拱形波纹钢屋盖计算模型及动力特性研究[D].武汉:武汉理工大学土木工程与建筑学院,2002.
[11]郭彦林,郑永会.斜拉式彩板波形拱壳结构承载力研究[J].土木工程学报,1999,(5):35-40.
[12]李远瑛.金属拱型波纹屋盖结构动力特性及动力响应研究[D].武汉:武汉理工大学土木工程与建筑学院,2001.
[13]庄茁.ABAQU S有限元软件6.4版入门指南[M].北京:清华大学出版社,1998.
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