STUDY ON FLEXURAL BEHAVIOR OF FIRE-EXPOSED RC BEAMS STRENGTHENED WITH SMPM
Rehabilitation with SMPM (high-strength steel wire mesh and polymer mortar) is a new technique of structural strengthening. As a new technique of strengthening, it has a series of obvious advantages. Experiments were conducted to investigate the flexural behavior of 3 RC beams. BF-1 is a comparative beam which is not on fire, BFF-1 is a comparative one fire-exposed, and BFF-2 is a strengthened specimen after fire. The Experimental results showed that the flexural load-carrying capacity and stiffness of the fire-exposed RC beam were reduced. In the fire-exposed course, temperatures of steel and concrete were not measured. The temperature distribution of the beam is calculated by thermal analysis with ANSYS procedure. The flexural load-carrying capacity and stiffness of the strengthened beam were increased effectively. The effect of this rehabilitation can reach the level of RC beams before fire on load-carrying capacity. Based on the tests and analyses results, the design formulae of the flexural load-carrying capacity and stiffness were supposed. The calculated results are in good agreement with the experimental ones.
SMPM Fire-exposed RC Beam Flexural Strengthening ANSYS Thermal analysis
Z.H. Yao S.M. Huang Q.L. Yao B. Song
M.S. Candidate, University of Science and Technology Beijing, Beijing, China Professor, China Academy of Building Research, Beijing, China Senior Engineer, China Academy of Building Research, Beijing, China Professor, University of Science and Technology Beijing, Beijing, China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）