cecs 167：2004 拱形波纹钢屋盖结构技术规程 条文说明

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1、中国工程建设标准化协会标准拱形波纹钢屋盖结构技术规程(试用)CECS167:2004条文说明目次1总则·············。····································】······⋯⋯(35)3材料····················································，··⋯⋯(36)4基本设计规定·······································⋯⋯“⋯(37)4.1一般规定············································

2、····⋯⋯(37)4.2设计指标···············································⋯⋯(39)4.3荷载················································。。······一(39)4.4构造要求························、·、、、、、···、、、、·，、、、一(40)5结构计算·················································⋯⋯(42)6制作及安装··························

3、················，····⋯⋯(47)6.2制作·············，··········································，二(47)6.3安装··············⋯⋯，································⋯⋯(47)7工程验收及维护······························⋯⋯‘⋯””’“’(4引7.1一般规定················，·······························一(49)7.2检测项目············

4、····································⋯⋯(49)7.3合格判定················································⋯⋯(51)7.4维护·····················································⋯⋯(51)附录A彩涂板镀层和涂层的技术要求·················⋯⋯(52)附录B拱形波纹钢屋盖结构弯矩调整系数············⋯⋯(53)附录C拱形波纹钢屋盖结构临界荷载系数············⋯⋯(54)附录D拱型

5、波纹钢屋盖结构等效截面特性··，·········⋯⋯(56)1总则1.0.2拱形波纹钢屋盖结构是一种由厚0.8-1.Smm的彩涂板通过专用设备轧制成特定形状的单元板拼装而成的拱结构。受构件成型工艺和机械加工能力的限制，这种结构的截面形式单一，所用板厚也不能根据结构承载需要随意增加理论分析和工程实践均表明，对于目前国内常用的几种截面形式，在成型设备加工能力许可的板厚范围内，当跨度较大时，尤其是在半跨荷载作用下，这种结构的承载力难以满足安全度要求，因此本规程规定这种结构适宜的跨度为不大于30m。对于更大跨度的结构，若采用拱形波纹钢屋盖结构，则应采取专门的措施。由

6、于拱形波纹钢屋盖结构是一种厚度很小的薄壁钢结构，对集中荷载、动荷载、几何缺陷等均反应敏感，对使用环境等也有较严格的要求。3材料3.0.1彩涂板的力学性能取决于基板的力学性能。基板是指用于涂覆涂料的钢带，其中包含镀层。彩涂板的力学性能标准值(用于材料进场验收)应符合表1的要求。当需要进行力学性能检验时，应采用除去涂层的基板作试样表1彩涂板力学性能标准值屈服强度抗拉强度断后伸长率牌号(MPa)(MPa)(Lo=80mm,b=20mm)不小于不小于%，不小于TS2SOGD十Z250330工9TS250GD+AZTS280GD+Z28036018TS280GD+AZ1

7、8TS3000D+AZ300380TS320GD+Z32039017TS320GD十AZTS350GD+Z35042016TS350GD+AZ3.0.2对于集承重与围护两种功能于一体的拱形波纹钢屋盖结构，板厚负偏差较大会明显减小结构承载力、降低结构安全度，因此本条限制了基板厚度负偏差的范围。作为构造要求，本条还规定了这种结构的最小基板厚度。本规程在结构设计可靠度中已考虑了3%以内的板厚负偏差，对于3%以上负偏差造成板厚的不足，设计计算时应予以扣除。基板厚度正负偏差的大小可在钢带轧制过程中通过调整公差带的位置来控制。公差带上移，负偏差减小，反之增大。控制负偏差大

8、小不会增加钢带的轧制成本。对用于拱形屋