| dc.description.abstract | Abstract
An earth-shattering earthquake, measuring 7.3 on the Richter scale, with its epicenter located near Nantou County’s Chi-Chi Township in central Taiwan, erupted at 1:47am on September 21th, 1999. Disaster statistics compiled by the Ministry of Transportation and Communications’ Central Weather Bureau up to October 11th, 1999 put housings that were totally wiped out at 26,835 buildings, or a total of 40,845 households, and that of semi-collapsed at 24,495 buildings, or a total of 41,393 households, which were affected by the violent jolts.
The September 21st quake, the worst earthquake ever recorded in Taiwan in the past one hundred years, had arisen from the movements of two tectonic plates – the raising of the Damaoupu-Shuangtung fault, which in turn triggered the movement of the Cherlungpu fault paralleled to its west. In light of this, the thesis aims to examine certain damages to public buildings arisen from this quake that require structural repair and reinforcement.
For the lack of a comprehensive guideline regulating the design of structural reinforcement in Taiwan, what has been specified in the “Concise Technical Guide on Concrete-reinforced Building Repair and Reinforcement” published by the Ministry of Interiors’ Building Research Institute, and that in the “Technical Manual for Post-Sept. 21 Quake Steel-Concrete Building Emergency Repair and Reinforcement” published by the Bureau of Reconstruction, has been focused largely on structural material reinforcement alone, but little is made to address hte “Overall structural safety,” let alone the general illustrations have also fallen short of describing the characteristics of dynamics on each individual brace.
Having participated in the post-quake repair, restoration and reinforcement work of a public building that fell victim to the September 21 quake, ranging from the assessment, design, to the implementation and supervision, the thesis not only truthfully chronicles but categorically sorts the design for repairing and reinforcing the existing steel-concrete buildings, and is noted for the following practicalities,
1.To address a variety of structural damage repairing materials by type, restoring design and implementation procedure;
2.To establish a stringent and effective design procedure for structural reinforcement;
hA shockproof endurance assessment model that helps to ensure the shockproof of an entire building.
hThe adaptation of the ETABS theory to ensure a proper strength reserved for each of the braces.
hAn ETABS structural analysis and shockproof endurance assessment are to follow before and after each reinforcement work.
3.To compare the pros and cons of the three implementation methods, namely via the steel-plate reinforcement, the carbon-fiber reinforced plastics (CFRP), or the glass-fiber reinforced plastics (GFRP),
hAn optimal solution in structural reinforcement needs to take into account related factors such as its workability, pricing and construction period.
The thesis, upon scrutinizing examination, aims to offer design and implementation methods for repair and restoration work, design processes for structural reinforcement, and a comparison on three most commonly seen reinforcement approaches, presented in an effort to bring forth certain factual contribution towards the local construction engineering sector. | en_US |