STUDY ON SAFETY APPRAISEMENT AND STRENGTHENING TECHNOLOGY OF MASONRY STRUCTURE BUILDINGS DAMAGED IN WENCHUAN EARTHQUAKE Ying Ma , Yongsheng Yi,Shuchun Zhou ,Yuexing Zhu , and Qigang Jiang 1) Graduate Student ,School of Architecture & Civil Engineering ,CUMT ,China 2) General Manager , Xuzhou Architecture design & research institute CO ,LTD ,China 3) Associate Professor ,School of Architecture & Civil Engineering ,CUMT , China 4) Director ,Xuzhou Construction Engineering testing Center, China 5) Chief Engineer ,Xuzhou Construction Engineering Testing Center, China ********************,***************.cn,***************,************** Abstract: Referring to the appraisement of masonry structure buildings in Mianzhu City, this paper studied the safety inspection methods, seismic capability appraisement process based on summarizing and analyzing of its earthquake damages; also, the strengthening technology was discussed. Most earthquake damages of masonry structure building were cracks on walls: the most common damages were X-shaped cracks on walls under or between windows(outer longitudinal) and incline cracks along corners of opening for doors and windows, then X-shaped, incline cracks on load bearing cross and inner longitudinal walls, also few horizontal and vertical cracks can be found. Considering the demand of seismic capability and reliability appraisement ,inspections were primarily carried out on structural measures of the mass structure. Compound seismic capability and reliability of building was appraised according to the results of first level appraisement, its performance in earthquake and values of strengthening .Strengthening of buildings damaged in earthquake must separate members to be repaired or strengthened accordi...
