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Warakorn Tantrapongsaton. Study on inspection and evaluation of damaged steel structure in Thailand. Master's Degree(Engineering and Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2015.
Study on inspection and evaluation of damaged steel structure in Thailand
Name: Warakorn Tantrapongsaton
keyword:
Steel
;
Damage
;
Defect
Abstract:
This research emphasized on indicating the damage that occurred on different existing steel structures, and identifying the causes of damage, by using the methods of visual inspection and evaluation. In addition, the interviews of the maintenance personnel who directly involved with the maintenance works were performed in order to acknowledge the countermeasures to handle the damage. The target steel structure consists of steel buildings, steel highway bridge, steel power plants, and steel billboards. The results indicated that the majority of damage or defect on steel structures was divided into two types ; 1) the damage during construction process, 2) the damage after construction. For the first type of damage, i.e. the damage during the construction process of the structure are the damage on the steel welding, and the defect of painting caused by poor workmanship of the steel work. From the results of visual inspection and evaluation of the target structure, it is found that types of the defects of welding are undercut and porosity, which assessed as Unacceptable accordion to the standard of Department of Public Works and Town & Country Palnning, DPT 1561-51. This might decrease the strength of the welds. Also, the painting defect mostly occurred on the inaccessible parts of the steel, and this defect might leads to severe corrosion damage. For the second type of damage, i.e. the damage after construction or that occurred during the service life of the steel structures, the damage due to corrosion occurred when the painting deteriorated. This severity of damage was controlled by two factors, which are the surrounding environmental condition, and the quality of maintenance work. The result of visual inspection and evaluation showed that the structure located in sensitive area to corrosion has more severity level of damage than the normal area, and structure that has better maintenance work tends to have less severity level of damage. The countermeasure to solve and prevent the damage proposed in this research was divided into two approaches, maintenance approach, and construction approach. For the first approach, a standard or guideline for the inspection and maintenance of the steel structure in Thailand should be drafted. For the second approach, the followings should be drafted or established ; 1) material specification to control the quality of the steel product from the different manufacturers (domestic and foreign factories), 2) construction handbook for the durable steel structure, 3) the system for accrediting structural steel fabricator
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Taweep Chaisomphob
Role:
advisor
Created:
2015
Modified:
2021-10-04
Issued:
2021-10-04
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Engineering and Technology
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.024403 วินาที
Warakorn Tantrapongsaton
| Title | Contributor | Type |
|---|---|---|
| Study on inspection and evaluation of damaged steel structure in Thailand
มหาวิทยาลัยธรรมศาสตร์ Warakorn Tantrapongsaton | Taweep Chaisomphob | วิทยานิพนธ์/Thesis |
Taweep Chaisomphob