本文選題：中小橋梁 + 健康監(jiān)測(cè)��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：本文以一座安裝長(zhǎng)期監(jiān)測(cè)系統(tǒng)的簡(jiǎn)支梁橋?yàn)橐劳泄こ?基于該橋的定期檢測(cè)數(shù)據(jù)和長(zhǎng)期監(jiān)測(cè)數(shù)據(jù),針對(duì)中小橋梁結(jié)構(gòu)特點(diǎn),提出了一種融合定期檢測(cè)數(shù)據(jù)和長(zhǎng)期監(jiān)測(cè)數(shù)據(jù)的中小跨徑梁式橋技術(shù)狀況評(píng)估方法。本文主要研究成果如下:①將應(yīng)變、跨中撓度、基礎(chǔ)沉降及裂縫寬度監(jiān)測(cè)項(xiàng)目分別作為一種病害融合在現(xiàn)有的橋梁技術(shù)狀況評(píng)定標(biāo)準(zhǔn)之中,將人工表觀檢測(cè)結(jié)果和監(jiān)測(cè)數(shù)據(jù)納入統(tǒng)一評(píng)估體系中,解決了長(zhǎng)期監(jiān)測(cè)數(shù)據(jù)和人工檢測(cè)數(shù)據(jù)互不相容的問(wèn)題。②將使用度指標(biāo)和K線圖引入到中小橋梁的技術(shù)狀況評(píng)定之中,利用使用度指標(biāo)和變化趨勢(shì)給出各監(jiān)測(cè)項(xiàng)目的評(píng)定等級(jí)及評(píng)定標(biāo)準(zhǔn)。③對(duì)依托工程應(yīng)變監(jiān)測(cè)數(shù)據(jù)、跨中撓度監(jiān)測(cè)數(shù)據(jù)和裂縫監(jiān)測(cè)數(shù)據(jù)進(jìn)行處理分析,繪制應(yīng)變、跨中撓度和裂縫監(jiān)測(cè)值以日和以周為周期的使用度曲線和動(dòng)向指標(biāo)曲線,并結(jié)合評(píng)定標(biāo)準(zhǔn)及人工檢查報(bào)告對(duì)全橋技術(shù)狀況進(jìn)行評(píng)估,證明評(píng)估方法的合理性和實(shí)用性。④繪制新村中橋監(jiān)測(cè)時(shí)間內(nèi)溫度曲線并和橋梁應(yīng)變、撓度及裂縫監(jiān)測(cè)值使用度曲線及動(dòng)向指標(biāo)曲線進(jìn)行對(duì)比分析,得出簡(jiǎn)支梁橋應(yīng)變監(jiān)測(cè)值變化主要是由汽車荷載產(chǎn)生的,而裂縫監(jiān)測(cè)值變化主要是溫度變化產(chǎn)生的,撓度監(jiān)測(cè)值則幾乎不受溫度影響。⑤采用誤差最小準(zhǔn)則和遺傳算法對(duì)新村中橋傳感器配置進(jìn)行優(yōu)化計(jì)算,得出簡(jiǎn)支梁橋長(zhǎng)期監(jiān)測(cè)傳感器除在跨中截面布置外,其余傳感器采用均勻?qū)ΨQ布置。⑥提出中小橋梁融合監(jiān)測(cè)數(shù)據(jù)使用度和動(dòng)向指標(biāo)的單項(xiàng)預(yù)警機(jī)制,給出各監(jiān)測(cè)項(xiàng)目報(bào)警級(jí)別及報(bào)警指標(biāo),經(jīng)過(guò)依托工程的實(shí)際應(yīng)用,證明該方法的有效性和直觀性。
[Abstract]:In this paper, a simple supported beam bridge with long term monitoring system is used as a support project. Based on the periodic detection data and long-term monitoring data of the bridge, a method for evaluating the technical condition of small and medium span beam bridge is proposed, which is based on the characteristics of small and medium bridge structures. The strain, the mid span deflection, the foundation settlement and the crack width monitoring project are respectively used as a kind of disease fusion in the existing evaluation criteria of the existing bridge technology. The artificial apparent detection results and monitoring data are incorporated into the unified evaluation system, and the problem of the incompatibility between the long-term monitoring data and the artificial detection data is solved. The standard and K-line map are introduced to the technical status assessment of small and medium bridges, and the evaluation grades and criteria of each monitoring project are given by using the index and trend of change. Thirdly, the strain monitoring data and fracture monitoring data are processed and analyzed based on the strain monitoring data of the engineering, the strain, the mid span deflection and the fracture monitoring value are drawn. The use degree curve and the trend index curve of the daily and weekly cycle, and evaluate the technical status of the whole bridge with the evaluation standard and the manual inspection report, and prove the rationality and practicability of the evaluation method. (4) to draw the curve of the temperature curve in the monitoring time of the new village bridge and the curve of the use degree of the monitoring value of the bridge and the deflection and the cracks. The contrast analysis of the standard curve shows that the change of the strain monitoring value of the simple supported beam bridge is mainly produced by the vehicle load, and the change of the monitoring value of the crack is mainly caused by the temperature change, and the deflection monitoring value is almost not affected by the temperature. 5. The minimum error criterion and the genetic algorithm are used to optimize the configuration of the new village bridge sensor. In addition to the middle cross section arrangement, the long-term monitoring sensors of the bridge are evenly arranged. 6. A single warning mechanism is proposed for the use degree and the trend index of the small and medium bridge fusion monitoring data. The alarm level and the alarm index of the monitoring items are given. The effectiveness and direct of the method are proved through the practical application of the work process. View nature.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U446

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 張海笑,徐小明;數(shù)據(jù)挖掘中分類方法的研究[J];山西電子技術(shù);2005年02期

2 韓鋒;張永水;;連通液位計(jì)在橋梁豎向撓度測(cè)量上的應(yīng)用[J];西部交通科技;2010年05期

相關(guān)博士學(xué)位論文 前2條

1 陳世民;橋梁監(jiān)測(cè)系統(tǒng)中海量數(shù)據(jù)分析理論與應(yīng)用[D];重慶大學(xué);2011年

2 荊龍江;預(yù)應(yīng)力混凝土斜拉橋損傷識(shí)別理論及應(yīng)用研究[D];浙江大學(xué);2007年

相關(guān)碩士學(xué)位論文 前3條

1 沈培文;鋼管混凝土拱橋安全性評(píng)估理論與方法研究[D];重慶交通大學(xué);2011年

2 邱麟;鋼管混凝土拱橋服役狀態(tài)評(píng)估技術(shù)研究[D];重慶交通大學(xué);2008年

3 朱清;大型橋梁結(jié)構(gòu)健康監(jiān)測(cè)技術(shù)[D];天津大學(xué);2012年

，

本文編號(hào)：1996013