既有网架结构的安全诊治关键技术及应用

随着城市发展进入存量建筑时代,如何准确评估既有网架结构的整体安全性能成为关键.以深圳市某个使用超过25年的网架结构为例,通过对该结构进行有针对性的现场检测,包括平面布局和尺寸检测、杆件焊缝超声检测、螺栓球射线检测、外观破损检测等内容,获得结构检测数据;再以现场检测数据为主,结合原有设计图纸,进行建模计算,得到该网架结构...

Key Technology and Application of Safety Diagnosis and Treatment of Existing Grid Structure

As urbanization develops into the era of existing buildings,how to accurately evaluate the overall safety performance of existing grid structures becomes the key.Take a grid structure that has been used for more than 25 years in Shenzhen as an example,through targeted on-site inspection of the structure,including plane layout and size detection,bar weld ultrasonic testing,bolt ball radiographic testing,appearance damage detection and other contents,the structure detection data are obtained.Based on the field test data,combined with the original design drawings,the safety performance evaluation results of the grid structure are obtained.In view of the members that do not meet the safety requirements,the reinforcement scheme is proposed and verified by calculation,so as to complete the safety diagnosis and treatment of the existing grid structure,and verify the effective value and reliable prospect of the above diagnosis and treatment key technologies.