The dynamic testing on an existing steel structure footbridge is introduced, and the dynamic characteristics are analyzed.
介绍了对一座钢结构人行桥进行的全桥动力测试，并对结构的动力特性进行了分析。
The existing problems in calculation approach for multi-story and high-rise steel frame structure are summarized.
总结了目前多高层钢框架结构计算方法存在的问题。
GQ98 Series pourable refractory has been successfully developed in order to improve the complex lining of steel rolling heating furnace and to renew the materials and structure of the existing lining.
为进一步提高轧钢加热炉复合炉衬的良好效益，更新现有炉衬的材料和结构，成功地开发了GQ 98系列浇注料。
However, concrete construct measure and attention matters about such conversion are not referred in the existing design and construction regulation of the concrete-filled steel tubular structure.
但关于此类转换的方法和措施，现行的钢管混凝土结构设计和施工规程尚未涉及。
The test results show that: the above two steel bracing-retrofitting methods can improve the lateral stiffness and energy-dissipating capacity of the existing frame structure effectively;
试验表明，两种支撑加固方法都能显著提高结构的抗侧刚度，有效改善结构的耗能能力；
The test results show that: the above two steel bracing-retrofitting methods can improve the lateral stiffness and energy-dissipating capacity of the existing frame structure effectively;
试验表明，两种支撑加固方法都能显著提高结构的抗侧刚度，有效改善结构的耗能能力；
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