Investigation and Preliminary Analysis of Rural and Town Building Damages of Yunnan Ludian Ms6.5 Earthquake

Abstract:

The "8.03" Ms6.5 Ludian earthquake in Yunnan province is the largest earthquake of the area in recorded history. The PGA of epicenter (Longtoushan town) reaches 948gal and the intensity of meizoseismal area arrives to IX degree. The earthquake has caused severe casualties and huge property losses. Based on the earthquake damage investigation, it is found that structure types of affected towns mainly include mud-wood, brick-wood, masonry, frame, bottom frame and composite structures. In the IX degree area, most of the mud-wood, brick-wood, unfortified masonry and composite structures turn into severely damaged or destroyed. Most bottom frame structures obtain inclined shear cracks on bottom walls. Part of the masonry structures built after 2008, which are set with ring beams, construction columns, cast-in-place floors and roofs, show well earthquake performances and suffer slight damage. What’s more, most filler walls and other non-structural components of frame structures in the meizoseismal area are severely damaged, part of their column ends or beam-column joints fall into failure, which doesn’t achieve "strong column-weak beam" yielding mechanism of the seismic design code expectation. The ending of this paper summarizes a number of recommendations for post-earthquake recovery and reconstruction work according to local conditions.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 1464-1468
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.1464
• Online since: December 2014
• Authors: Yong Kun Lu, Hong Fu Chen*, Hao Yu Zhang, Xu Chuan Lin, Hao Chen
• Keywords: Earthquake Damage, Reconstruction, Restoration, Rural Building, Seismic Fortification, Town Building, Yunnan Ludian Ms6.5 Earthquake

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DOI: 10.4028/www.scientific.net/kem.452-453.105

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