| DC 欄位 |
值 |
語言 |
| DC.contributor | 土木工程學系在職專班 | zh_TW |
| DC.creator | 張淑平 | zh_TW |
| DC.creator | Shu-Ping Chang | en_US |
| dc.date.accessioned | 2013-1-18T07:39:07Z | |
| dc.date.available | 2013-1-18T07:39:07Z | |
| dc.date.issued | 2013 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=100352028 | |
| dc.contributor.department | 土木工程學系在職專班 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 鋼筋混凝土結構物現況安全評估所須的分析參數，主要是根據鋼筋混
凝土的劣化狀況，以及竣工資料，若無法取得這些參數，就必須另以非破
壞檢測方式推估，來提昇評估精度。
結構物承載能力的評估，和拉力區鋼筋強度有直接關係，而與混凝土
的中性化、氯離子含量並無太直接關連。甚至混凝土的抗壓強度與整體結
構物之抗彎、抗剪、握持能力、彈性模數等亦只有平方根的關聯。因此混
凝土材質檢驗，或許只能提供劣化潛勢研判，某些可以不必要的檢測項目，
目前卻一直廣被使用於安全評估，應有再探討空間。
鋼筋強度是為RC 結構，在安全評估中的最重要關鍵參數，而目前能取
得上述參數的非破壞檢測方法並不多見，甚至也有一些困難。因此，本文
應用金相組織試驗理論於實驗室中建立鋼筋抗拉強度及里氏硬度之相應關
係曲線，此法特色為，可直接於檢測現場以鋼筋硬度試驗換算成鋼筋強度，
解決目前結構物評估時無法取得鋼筋降伏強度的窘境。 | zh_TW |
| dc.description.abstract | The evaluation on the safety of Reinforced Concrete structures requires
analysis parameters. Predominately, this is in accordance with the deterioration
state of the Reinforced Concrete. If parameters are not available upon
construction, then non-destructive testing (NDT) must be used.
It is thought that the loading capacity of the Reinforced concrete
structural has a direct relationship with the strength of tension steels. However
the neutralization of the concrete and the chloride ion content bare no direct
relationships. In addition there is only a square root relationship between the
entire structure and the bending, shearing, carrying capacity and the elasticity
parameter of the structure. As such, inspections on the concrete quality may
only yield the degradation potential with some inspection items unnecessary.
Currently however this has been widely used in safety evaluations. This should
be reevaluated in the analysis.
The most important parameters for evaluating reinforced concrete
structure safety are the steel strength. Currently, NDT methods in obtaining
these parameters are rare. Therefore, this paper has applied the metallographic
theory and used laboratory testing in determining the corresponding
relationship between the steel pulling strength and the Leeb hardness. The
characteristic of this method is that the steel hardness value can be
mathematically converted to steel strength. This can be performed on-site and
solves the dilemma of the inability to obtain the steel strength when
undertaking a structural evaluation. | en_US |
| DC.subject | 鋼筋混凝土 | zh_TW |
| DC.subject | 分析參數 | zh_TW |
| DC.subject | NDT | zh_TW |
| DC.subject | 鋼筋強度 | zh_TW |
| DC.subject | 鋼筋硬度 | zh_TW |
| DC.subject | 金相組織 | zh_TW |
| DC.subject | 試驗理論 | zh_TW |
| DC.subject | Reinforced Concrete | en_US |
| DC.subject | Analysis Parameters | en_US |
| DC.subject | NDT | en_US |
| DC.subject | Steel Strength | en_US |
| DC.subject | Reinforced Hardness | en_US |
| DC.subject | metallographic theory | en_US |
| DC.title | 舊有結構物安全評估之鋼筋參數檢測探討 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Safety analysis of existing structures and steel testing parameters | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |