本文選題：預(yù)應(yīng)力管道 + 壓漿評(píng)價(jià)��； 參考：《石家莊鐵道大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)橋梁事業(yè)的快速發(fā)展,預(yù)應(yīng)力混凝土結(jié)構(gòu)被廣泛應(yīng)用于工程建設(shè)之中。在后張法預(yù)應(yīng)力孔道壓漿過(guò)程中,由于壓漿工藝、灌漿材料或人為疏忽等原因,孔道內(nèi)有時(shí)會(huì)出現(xiàn)灌漿不密實(shí),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(yù)應(yīng)力混凝土結(jié)構(gòu)的承載能力與耐久性。為了保證預(yù)應(yīng)力混凝土橋梁灌漿質(zhì)量,就要及時(shí)發(fā)現(xiàn)和處理灌漿缺陷。因此灌漿密實(shí)度檢測(cè)技術(shù)的研究也就變得十分重要。本文對(duì)壓漿效果的檢測(cè)技術(shù)作了理論研究,提出了沖擊回波法缺陷類型的判別標(biāo)準(zhǔn),并進(jìn)行了實(shí)踐檢測(cè),主要做了以下工作:(1)闡述了壓漿效果檢測(cè)技術(shù)的研究現(xiàn)狀,總結(jié)了現(xiàn)有的壓漿檢測(cè)方法以及存在的問(wèn)題,主要研究了無(wú)損檢測(cè)技術(shù)的方法和原理;(2)主要研究了沖擊回波法檢測(cè)孔道壓漿密實(shí)性的基本原理,并介紹了孔道壓漿的評(píng)判方法;(3)基于沖擊回波法,對(duì)空管和灌漿管道的檢測(cè)結(jié)果作了比較。結(jié)合滹沱河大橋的預(yù)制梁通過(guò)定性法和定位法對(duì)灌漿管道的密實(shí)性進(jìn)行檢測(cè),并對(duì)灌漿質(zhì)量進(jìn)行評(píng)價(jià)。
[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(xué)位授予單位】：石家莊鐵道大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U445.57

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本文編號(hào)：1823999