同时，进一步深入研究了目前的“对既有建筑结构的可靠性定技术”、“保持原

At the same time, it has further studied the current supporting technologies such as "reliability determination technology for existing building structures", "protection and reinforcement technology to maintain the bearing capacity of the original structure", and "anti-corrosion and anti-aging to enhance the durability of materials". It is basically satisfied to ensure that existing buildings have the same safety and reliability as within the design service life during the extended service period.

At the same time, further in-depth study of the current "reliability of existing building structure sizing technology", "maintaining the original structure carrying capacity of the protection and reinforcement technology" and "enhance the durability of materials anti-corrosion and anti-aging" and other supporting technologies can basically meet the basic satisfaction to ensure that existing buildings in the extended life period with the design of the same safety and reliability.

At the same time, we further studied the current "supporting technology for the reliability of existing building structures", "protection and reinforcement technology to maintain the original structure's carrying capacity", and "supporting materials' durability, such as anti-aging and anti-aging", which can basically meet the same safety and reliability of the existing buildings during the extended service life.<br>