| 姓名 | 林登淵(Lin-Teng Yuan) | 電子郵件信箱 | a0937717190@yahoo.com.tw | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 93學年第2學期 | |
| 論文名稱(中) | 公路橋樑伸縮縫損壞調查與相關影響因素之研究 | |||
| 論文名稱(英) | Investigation of
Factors Causing the Damage of Bridge Expansion Joint | |||
| 檔案 |
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。 |
論文使用權限 | 校內外均一年後公開 | |
| 論文語文/頁數 | 中文/72 | |||
| 摘要(中) | 摘 要 國內近年來高、快速公路的建設，多數路段採高架工程，新建橋樑多採用長跨度或連續樑橋，因此伸縮縫型式及伸縮量不斷的創新與擴大，構造益形複雜，以致造成伸縮縫之損壞情形亦較為頻繁、顯著。在國道3號高速公路橋樑伸縮縫接二連三出現問題，交通部三申五令必須做好伸縮縫施工品質之際，有必要對伸縮縫損壞情形及相關影響因素加以探究。 本研究係以中部地區高、快速公路橋樑伸縮縫為範圍，進行現況調查及國內機關訪查，分析各路線伸縮縫使用型式、數量及損壞情形，計算出各型式之損壞率，同時分析其損壞形式，並分別從設計、材料、施工與管理維護等方面探討其損壞相關影響因素。經探討、分析獲得下列結果： 1.調查路段中各種型式之橋樑伸縮縫以齒型使用量最多，模組型次之；而損壞率亦以齒型為最低，模組型損壞率則約為齒型之3.7倍。 2.齒型伸縮縫之損壞現象以兩側錨碇混凝土龜裂、錨碇構件斷裂居多。損壞的原因主要為錨碇構件焊接不良或任意扳彎、預留槽尺寸不足或未確實清理，導致混凝土錨碇強度不足而破壞。 3.就現場調查結果發現，橋台背牆上方之無收縮混凝土發生龜裂現象，明顯高於橋墩處伸縮縫。 4.從各項損壞影響因素包括設計方面、材料方面、施工方面以及管理維護各項分析結果發現，以施工方面的影響因素最多，顯示有關單位對於伸縮縫之安裝施工作業管理有待加強。 | |||
| 摘要(英) | Abstract In the recent years, a majority of the newly-constructed freeways and expressways at home are built to have many elevated sections and most of the viaducts are designed as long-span or continuous ones, which means expansion joints with larger sizes are required. Along the introduction of new expansion joints that adopt complicated structures to accommodate increasing expansions come the obvious and frequent failures of the innovations. The problems, one after another, of the bridge expansion joints on national freeway No. 3 stand the case. It also urges the authorities (i.e. the Ministry of Communications) to repeatedly instruct the relevant departments to carry through the corresponding management and guarantee the construction quality. Therefore, it is necessary to look into the conditions and causes of the damages of the joints. This study aims at the bridge expansion joints of the freeways and expressways in the middle-west area of Taiwan. It is carried out by the methods of on-the-spot investigation and domestic organization interview. According to the data collected, the types, amounts and damage conditions of the expansion joints being used in each route are categorized; the damage rates and damage patterns are analyzed; the relating factors, such as design, material, construction management and maintenance that result in the damages, are discussed. The conclusions are as follows: 1.The finger joint is the most commonly adopted one, while the modular bridge joint system (MBJS) second; the damage rate of finger joint ranks the last, while that of MBJS is about 3.7 times of the finger joint. 2.The damage patterns of the finger joint are commonly seen as the cracking of concrete in the anchorage area and the fracture of the anchorage itself. The main causes of the phenomena, such as ill-welding or arbitrary bending of the anchorage, inadequate space or mal cleaning of the block-outs, lead to insufficient anchorage strength and the failure in the end. 3.By on-the-spot investigation, we find the non-shrinkage concrete above the abutment back-walls have more cracks than those in the pier joints. 4.It proves that the aspect of construction management takes the reins of all the factors causing the damage, that is to say, the construction departments still leave much to be desired in the installation of expansion joints. | |||
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