本文選題：斜拉橋 + 健康監(jiān)測(cè)　； 參考：《長(zhǎng)安大學(xué)》2014年碩士論文

【摘要】：橋梁建成后期的服役狀態(tài)日益受到關(guān)注，尤其是規(guī)模較大的斜拉橋的健康狀態(tài)直接關(guān)系人民的生命財(cái)產(chǎn)安全，因此需要及時(shí)獲得橋梁的運(yùn)營(yíng)狀態(tài)信息，從而第一時(shí)間做出維修加固決策，通過健康監(jiān)測(cè)系統(tǒng)對(duì)橋梁的狀態(tài)實(shí)時(shí)監(jiān)測(cè)，對(duì)橋梁各部位的重要參數(shù)進(jìn)行分析，運(yùn)用基于變權(quán)綜合原理的層次分析法對(duì)橋梁的狀態(tài)給出科學(xué)的評(píng)價(jià)，為管理者提供可靠的決策依據(jù)。 本文以勉縣漢江大橋?yàn)楣こ瘫尘埃饕芯恳韵聝?nèi)容： ①對(duì)基于變權(quán)綜合原理的層次分析法基本原理進(jìn)行研究。結(jié)合勉縣漢江大橋的結(jié)構(gòu)特點(diǎn)，，建立遞階層次結(jié)構(gòu)模型，運(yùn)用專家調(diào)查方法將定性的因素定量化，確定指標(biāo)的權(quán)重值，運(yùn)用適度量化指標(biāo)模型對(duì)底層評(píng)估指標(biāo)無量綱化處理，再運(yùn)用變權(quán)綜合原理對(duì)指標(biāo)權(quán)重進(jìn)行合理分配，從而形成一套科學(xué)完整的評(píng)估系統(tǒng)。 ②建立勉縣漢江大橋的健康監(jiān)測(cè)系統(tǒng)。包括傳感器布置方案、信息采集與遠(yuǎn)程收發(fā)模塊、數(shù)據(jù)遠(yuǎn)程監(jiān)測(cè)軟件等，建立完善的監(jiān)測(cè)系統(tǒng)，為斜拉橋的服役狀態(tài)評(píng)估奠定了數(shù)據(jù)基礎(chǔ)。 ③基礎(chǔ)數(shù)據(jù)預(yù)處理。運(yùn)用數(shù)據(jù)跳躍法對(duì)索力數(shù)據(jù)進(jìn)行粗差剔除，用噪聲平滑法對(duì)數(shù)據(jù)曲線進(jìn)行平滑處理：對(duì)應(yīng)力數(shù)據(jù)進(jìn)行溫度修正，剔除由于溫度產(chǎn)生的應(yīng)力。并確立索力、應(yīng)力的安全閥值，為實(shí)時(shí)預(yù)警提供依據(jù)。經(jīng)過數(shù)據(jù)預(yù)處理，為評(píng)估工作提供可靠的基礎(chǔ)數(shù)據(jù)。 ④勉縣漢江大橋狀態(tài)評(píng)估。以勉縣漢江大橋?yàn)楸尘埃?yàn)證層次分析法對(duì)矮塔斜拉橋狀態(tài)評(píng)估的實(shí)用性，對(duì)下部結(jié)構(gòu)、主梁、索塔、索力、附屬設(shè)施進(jìn)行評(píng)價(jià)，得出橋梁各部位的服役狀態(tài)，為管理著提供決策依據(jù)。 本文的研究成果可為勉縣漢江大橋后期運(yùn)營(yíng)的服役狀態(tài)評(píng)估系統(tǒng)提供一套實(shí)用可靠、有效的解決方案，為健康監(jiān)測(cè)評(píng)估系統(tǒng)的應(yīng)用和發(fā)展提供了一個(gè)實(shí)例。
[Abstract]:More and more attention is paid to the service state of the bridge in the later stage of the bridge construction, especially the health state of the large cable-stayed bridge is directly related to the safety of people's life and property, so it is necessary to obtain the information of the bridge's operation state in time. Therefore, the first time to make the maintenance and reinforcement decision, through the health monitoring system to monitor the status of the bridge in real time, to analyze the important parameters of each part of the bridge, The analytic hierarchy process (AHP) based on the principle of variable weight synthesis is used to give a scientific evaluation of the state of the bridge, which provides a reliable decision basis for the manager. Taking the Hanjiang Bridge in Mian County as the engineering background, this paper mainly studies the following contents: 1. The basic principle of Analytic hierarchy process (AHP) based on the principle of variable weight synthesis is studied. Combined with the structural characteristics of Hanjiang Bridge in Mian County, the hierarchical structure model is established, the qualitative factors are quantified by expert investigation method, the weight of the index is determined, and the dimensionality of the bottom evaluation index is treated by using the moderate quantitative index model. Then we use the principle of variable weight synthesis to distribute the index weight reasonably and form a scientific and complete evaluation system. Establish the health monitoring system of Hanjiang Bridge in Mian County. It includes sensor layout, information collection and remote transceiver module, data remote monitoring software and so on. A perfect monitoring system is established, which lays a data foundation for the evaluation of cable-stayed bridge service status. 3 basic data preprocessing. The gross error of cable force data is eliminated by data jump method, the data curve is smoothed by noise smoothing method, the stress data is corrected by temperature, and the stress caused by temperature is eliminated. The safety threshold of cable force and stress is established to provide the basis for real-time warning. After data preprocessing, the evaluation work provides reliable basic data. Evaluation of the condition of Hanjiang Bridge in Mian County. Taking the Hanjiang Bridge in Mian County as the background, this paper verifies the practicability of AHP in evaluating the state of the cable-stayed bridge with low tower, evaluates the substructure, main beam, cable tower, cable force and auxiliary facilities, and obtains the service status of each part of the bridge. Provide basis for decision making for management. The research results in this paper can provide a set of practical and effective solutions for the service state evaluation system of Hanjiang Bridge in Mian County, and provide an example for the application and development of the health monitoring and evaluation system.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U448.27;U446

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本文編號(hào)：1935142