2010年9月 施工技术 第39卷第9期 CONSTRUCTION TECHNOLOGY 111 射线衍射法在既有钢结构应力检测中的应用 李大林，陈鲁2，张其林 (1.同清大学土木工程学院，上海200092：2.上海同清建设工程质董检测站，上海200092) [描要]省多品材料中存在应力时，其内邮品面陶距就会发生盘化，导致刺线衍射港线产生位移.通过分析衍刺 峰位的变化，就可以测量材料中内应力大小及方向.以辽守菜体育馆旅支顶结构为背景，引入射线衍新法测 试了12根径偷杆的应力，并设计结果进行比转，检侧结果表明，传构张拉施工满足计要求，构件实际应力设 计应力较为接近，构处于安全状态.本方法对既有钢结构建筑的护和安全性祥体提供了量化缘据. [关键词]既有铜结构：X射线衍射：应力检测 [中分类导]TU391 [文献标识移]A [文章编号]1002-8498(2010)09-0111-03 Application of X-ray Diffraction Method in Stress Measurement of Existing Steel Structures Li Dalin' Chen Lu2 Zhang Qilin' (1.Ciril Engineering School Tongji University Shanghai 200092 China: 2.Shanghai Tongji Construction Quality Inspection Station Shanghai 200092 China) Abstract:When internal stress exists in polycrystalline materials the interplanar crystal spacing will consequently change and the X-ray diffraction spectrum will vary as well.The internal stress of materials can be figured out by analyzing the displacement change of the diffraction peak.The X-ray diffraction method is adopted to test the stress of 12 radial members of a stadium suspended-dome in Liaoning province.The parison results between the testing data and the designing data show that real stress of the members matches the design stress well and the construction quality meets the design requirement. Totally the structure is in safety.The Xray method gives a quantitative basis for maitaining and safety evaluating of existing steel structures. Key words:existing steel structure:X-ray diffraction:stress measuremen...
X射线衍射法在既有钢结构应力检测中的应用.pdf
