本文關(guān)鍵詞：橋梁健康監(jiān)測系統(tǒng)的設(shè)計與實現(xiàn)　出處：《太原理工大學》2014年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 橋梁健康監(jiān)測系統(tǒng) B/S結(jié)構(gòu) 光纖光柵傳感器 數(shù)據(jù)管理 安全評估

【摘要】：隨著城鎮(zhèn)化進程的加快,城市集群的建立與完善,越來越多的基礎(chǔ)設(shè)施建設(shè)加緊動工�，F(xiàn)代橋梁的作用已經(jīng)不僅僅局限于溝通一條河兩岸的發(fā)展,更多的是作為交通運輸?shù)年P(guān)鍵節(jié)點,在國民經(jīng)濟與現(xiàn)代化建設(shè)中起到重要的作用。橋梁在運營過程中,受到環(huán)境的影響、化學物質(zhì)的侵蝕以及橋梁自身材料性能的不斷退化,這些都可能導致部分構(gòu)件在沒有達到設(shè)計壽命之前就產(chǎn)生不同程度的劣化和損傷,如果不能及時發(fā)現(xiàn)并采取維修措施,不僅會影響到行車安全,嚴重的更可能導致橋梁結(jié)構(gòu)的破壞,縮短橋梁的使用壽命甚至坍塌,給人民的生命財產(chǎn)帶來損失。很長一段時間來,傳統(tǒng)的橋梁健康檢測以人工檢測為主,在實際應用中有很大的局限性：耗時、費力、效率低,甚至檢測的結(jié)果可能會因人為因素出現(xiàn)漏判和誤判。 橋梁健康監(jiān)測系統(tǒng),是一個集成了傳感器子系統(tǒng)、數(shù)據(jù)采集傳輸子系統(tǒng)以及健康監(jiān)測軟件子系統(tǒng)的統(tǒng)一化、高效率的平臺,通過準確且科學的獲取傳感器端的數(shù)據(jù),合理運用多種算法對采回數(shù)據(jù)進行分析處理,并利用曲線、圖表等直觀的形式呈現(xiàn)出來,為橋梁使用壽命的評估、管養(yǎng)、維護與統(tǒng)籌決策提供科學的依據(jù),保障橋梁長期安全的運營,對國民經(jīng)濟的發(fā)展和社會的安定起到至關(guān)重要的作用。 本文是在導師的悉心指導下,在研究與歸納當前國內(nèi)外橋梁健康監(jiān)測系統(tǒng)以及狀態(tài)評估技術(shù)的基礎(chǔ)上,根據(jù)實際橋梁的特點,確定了橋梁健康監(jiān)測系統(tǒng)的總體設(shè)計構(gòu)思并進行了相應的軟件設(shè)計開發(fā)。主要完成的工作如下： 1)通過對橋梁健康監(jiān)測系統(tǒng)發(fā)展與應用的分析與總結(jié),吸取行業(yè)內(nèi)可借鑒利用的經(jīng)驗教訓,確定了橋梁健康監(jiān)測系統(tǒng)的基本技術(shù)原理、結(jié)構(gòu)組成、現(xiàn)階段存在的問題以及對應的解決方案。 2)根據(jù)橋梁特點與用戶需求分析,提出了適合橋梁本身的設(shè)計方案,開發(fā)了基于B/S結(jié)構(gòu)的橋梁健康監(jiān)測系統(tǒng)。系統(tǒng)運用有限元原理構(gòu)造橋梁的3D有限元模型,直觀的展示了大橋的結(jié)構(gòu)以及傳感器的布設(shè)位置；在數(shù)據(jù)采集過程中,根據(jù)不同需要設(shè)計了多種數(shù)據(jù)存儲模式,方便管理人員使用；設(shè)定了多級閾值,實現(xiàn)了實時監(jiān)測的閡值報警；根據(jù)需求設(shè)計了數(shù)據(jù)庫,數(shù)據(jù)管理時可查詢歷史數(shù)據(jù)并進行分析計算并實現(xiàn)了數(shù)據(jù)的圖表顯示。 3)采用層次分析法對橋梁進行了分層評分,實現(xiàn)了三個級別的狀態(tài)分級并建立了健康檔案,方便橋梁管理人員記錄查詢所有信息并對橋梁現(xiàn)階段健康狀態(tài)有直觀的了解。 4)系統(tǒng)經(jīng)大橋?qū)嵉匕惭b調(diào)試,其功能能適用于大橋長期穩(wěn)定監(jiān)測,測試的精度與可靠性都符合管理部門的需要,表現(xiàn)出了良好的穩(wěn)定性與實用性。
[Abstract]:With the acceleration of urbanization, the establishment and improvement of urban clusters, more and more infrastructure construction has been stepped up. The role of modern bridges is not limited to the development of a river. As the key node of transportation, it plays an important role in the national economy and modernization construction. The bridge is affected by the environment in the operation process. The erosion of chemical substances and the continuous degradation of the material properties of bridges may lead to the deterioration and damage of some components before they reach the design life. If not timely detection and maintenance measures, not only will affect the safety of traffic, serious more likely to lead to the destruction of the bridge structure, shorten the service life of the bridge or even collapse. For a long time, the traditional bridge health detection focused on manual detection, which has a lot of limitations in practical application: time-consuming, laborious, low efficiency. Even the results of the test may be due to human factors and miscarriage of justice. Bridge health monitoring system is an integrated sensor subsystem, data acquisition and transmission subsystem and health monitoring software subsystem unified, high efficiency platform. Through the accurate and scientific acquisition of sensor data, reasonable use of a variety of algorithms to analyze and process the collected data, and the use of curves, charts and other intuitive forms, for the bridge life evaluation. It is very important for the development of the national economy and the stability of the society to provide scientific basis for the maintenance, maintenance and overall decision-making of the bridge and to ensure the long-term safe operation of the bridge. Under the guidance of the tutor, this paper studies and summarizes the current bridge health monitoring system and status assessment technology, according to the characteristics of the actual bridge. The overall design concept of the bridge health monitoring system is determined and the corresponding software design and development are carried out. The main work accomplished is as follows: 1) through the analysis and summary of the development and application of bridge health monitoring system, the basic technical principle and structure composition of bridge health monitoring system are determined by drawing lessons from the experience and lessons that can be used for reference in the industry. Existing problems and corresponding solutions at this stage. 2) according to the analysis of the characteristics of the bridge and the needs of the users, the design scheme suitable for the bridge itself is put forward. The bridge health monitoring system based on the B / S structure is developed. The 3D finite element model of the bridge is constructed by using the finite element principle. The bridge structure and the location of the sensor are displayed intuitively. In the process of data acquisition, a variety of data storage modes are designed according to different needs, which is convenient for managers to use. The multilevel threshold is set, and the threshold value alarm is realized in real time monitoring. The database is designed according to the requirement, and the historical data can be queried, analyzed and calculated when the data is managed, and the chart display of the data is realized. 3) the hierarchical grading of the bridge was carried out by using the analytic hierarchy process (AHP), the state grading of the three levels was realized and the health records were established. It is convenient for bridge managers to record and query all information and have an intuitive understanding of the bridge's current state of health. 4) the system is installed and debugged through the bridge field, and its function can be applied to the long-term stability monitoring of the bridge. The accuracy and reliability of the test meet the needs of the management department and show good stability and practicability.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U446

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