本文選題：預應力管道 + 壓漿評價��； 參考：《石家莊鐵道大學》2015年碩士論文

【摘要】：隨著我國橋梁事業(yè)的快速發(fā)展,預應力混凝土結構被廣泛應用于工程建設之中。在后張法預應力孔道壓漿過程中,由于壓漿工藝、灌漿材料或人為疏忽等原因,孔道內有時會出現(xiàn)灌漿不密實,甚至出現(xiàn)不飽滿和孔洞等現(xiàn)象,這將在很大程度上降低預應力混凝土結構的承載能力與耐久性。為了保證預應力混凝土橋梁灌漿質量,就要及時發(fā)現(xiàn)和處理灌漿缺陷。因此灌漿密實度檢測技術的研究也就變得十分重要。本文對壓漿效果的檢測技術作了理論研究,提出了沖擊回波法缺陷類型的判別標準,并進行了實踐檢測,主要做了以下工作:(1)闡述了壓漿效果檢測技術的研究現(xiàn)狀,總結了現(xiàn)有的壓漿檢測方法以及存在的問題,主要研究了無損檢測技術的方法和原理;(2)主要研究了沖擊回波法檢測孔道壓漿密實性的基本原理,并介紹了孔道壓漿的評判方法;(3)基于沖擊回波法,對空管和灌漿管道的檢測結果作了比較。結合滹沱河大橋的預制梁通過定性法和定位法對灌漿管道的密實性進行檢測,并對灌漿質量進行評價。
[Abstract]:With the rapid development of bridges in China, prestressed concrete structures are widely used in engineering construction. In the post- pre-stressed channel grouting process, due to grouting technology, grouting materials or human negligence, the grouting sometimes occurs in the channel not dense, or even the phenomenon of lack of fullness and hole, etc. This will greatly reduce the bearing capacity and durability of prestressed concrete structures. In order to ensure the grouting quality of prestressed concrete bridge, it is necessary to find and deal with grouting defects in time. Therefore, the research of grouting density detection technology becomes very important. This paper makes a theoretical study on the testing technology of the grouting effect, puts forward the criterion of judging the defect type of the impact echo method, and carries out the practical inspection. The main work is as follows: (1) the present situation of the research on the grouting effect detection technology is expounded. This paper summarizes the existing grouting testing methods and the existing problems, mainly studies the methods and principles of nondestructive testing technology, mainly studies the basic principle of the impact echo method for detecting the compactness of hole grouting. Based on the impact echo method, the test results of empty pipe and grouting pipeline are compared. Combined with the precast beam of Hutuo River Bridge, the compactness of grouting pipeline was tested by qualitative method and positioning method, and the grouting quality was evaluated.
【學位授予單位】：石家莊鐵道大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.57

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本文編號：1823999