所属单位：土木工程学院

发表刊物：Advanced Materials Researach

关键字：中文关键字：连续刚构;预应力损失;复合钢束，英文关键字：Continuous rigid frame bridge; Prestressing losses

摘要：In order to make much detail monitor and more practical evaluation on structural safety and durability for long-span continuous rigid frame bridge, the condition for prestressing reservation in service stage turns out to be a necessary key index. By means of obtained stress value on prestressing tendons, discrimination on subordinated mode and recognition on nominal coefficients of prestress losses are implemented. Furthermore, unified evaluation on effective prestress of post-tensioned PC bridges are realized at anytime of the whole service life, which include different geometric patterns of prestressed reinforcement, different types of structure and different structural formation systems. Simultaneously, recognition on two types of nominal coefficients for prestress losses is realized and regularities of practical distribution can be simulated. The practical utility of a long-span continuous rigid frame bridge show that the general principle for effective prestress can be demonstrated. Therefore, key parameters for health monitoring on existing long-span continuous rigid frame bridge are provided and the results lay the foundation for further control.

备注：郭琦

合写作者：贺拴海

第一作者：李青宁,郭琦

论文类型：期刊论文

卷号：卷：371

期号：期：

页面范围：页：1997-2000

是否译文：否

发表时间：2011-11-01