多地域公路橋梁常規(guī)車輛及特重車荷載研究
發(fā)布時間：2018-09-01 18:03
【摘要】：近幾十年內我國的交通行業(yè)發(fā)展迅速，公路橋梁交通荷載信息和特征也隨之發(fā)生變化，需要通過系統(tǒng)的調查研究進行及時的更新，從而進一步掌握交通荷載對基礎設施的影響。本研究對典型地區(qū)的公路交通荷載進行長期的實時監(jiān)測，通過對實時監(jiān)測數(shù)據(jù)資料進行細致科學的整理分析，對典型地區(qū)的交通荷載特征開展了深入系統(tǒng)的研究，研究結果可以有效地幫助建立反映實際交通特征的荷載模型，并且對于確定汽車荷載設計標準和進行橋梁安全可靠性評估具有重要的意義。 基于動態(tài)稱重（WIM，weigh-in-motion）設備以及基于線陣CCD成像的交通信息采集系統(tǒng)，本文對國內幾個典型地區(qū)的交通荷載進行實測，并從以下兩個方面對實時監(jiān)測的數(shù)據(jù)進行分析。一方面對交通荷載特征參數(shù)的隨機特性及統(tǒng)計規(guī)律進行分析，，并推導出相應的疲勞荷載譜，另一方面提取河北、上海和浙江地區(qū)的特重車荷載數(shù)據(jù)，對三個地區(qū)的特重車荷載特點進行全面地研究。具體研究內容包括： 1、本文提出一種精確可靠且能夠全面采集交通荷載的調查方法。該方法利用WIM系統(tǒng)和基于線陣CCD成像的交通信息采集系統(tǒng)的優(yōu)點，并同現(xiàn)場人工觀測結合，精確地對車輛的類型、軸載質量、車速、行駛車道等參數(shù)進行識別。 2、利用概率和數(shù)理統(tǒng)計分析方法，基于河北和浙江地區(qū)的實測數(shù)據(jù)對公路車輛荷載進行全面系統(tǒng)的研究和對比分析，對典型車輛的車速、車時距、軸距、軸載質量等重要參數(shù)的概率分布進行K-S檢驗，提取符合其特征的概率分布函數(shù)。 3、同已有公路橋梁交通荷載研究相比，本研究的一個重要特征是首次針對特重車荷載進行系統(tǒng)深入的分析。根據(jù)河北、上海和浙江地區(qū)的統(tǒng)計樣本數(shù)據(jù)，對特重車荷載主要參數(shù)的分布規(guī)律和統(tǒng)計特征進行研究，并對這三個地區(qū)的特重車荷載特點進行對比分析，為進一步對在役橋梁進行安全可靠性評估提供重要依據(jù)。 4、基于實測交通荷載數(shù)據(jù)對中小跨徑公路橋梁的疲勞荷載譜進行研究。根據(jù)等效疲勞損傷原則，通過計算分析得到等效疲勞車輛模型，進而推導出適用于河北和浙江地區(qū)的疲勞荷載譜。同時建立疲勞驗算模型，基于S-N曲線和Miner準則，對各疲勞車輛引起橋梁結構的疲勞損傷值進行研究。
[Abstract]:With the rapid development of transportation industry in China in recent decades, the traffic load information and characteristics of highway and bridge have changed, which need to be updated in time through systematic investigation and research, so as to further understand the impact of traffic load on infrastructure. This research carries on the long-term real-time monitoring to the highway traffic load in the typical area, through carries on the careful and scientific analysis to the real-time monitoring data, has carried on the thorough and systematic research to the typical area traffic load characteristic. The results of the study can effectively help to establish a load model that reflects the actual traffic characteristics, and it is of great significance to determine the design criteria of vehicle loads and to evaluate the safety and reliability of bridges. Based on the dynamic weighing (WIM,weigh-in-motion) equipment and the traffic information acquisition system based on linear CCD imaging, the traffic loads in several typical areas in China are measured in this paper, and the real-time monitoring data are analyzed from the following two aspects. On the one hand, the random characteristics and statistical rules of traffic load characteristic parameters are analyzed, and the corresponding fatigue load spectrum is deduced. On the other hand, the load data of heavy-duty vehicles in Hebei, Shanghai and Zhejiang are extracted. The load characteristics of extra heavy vehicles in three areas are studied comprehensively. The main contents are as follows: 1. This paper presents an accurate and reliable method for collecting traffic loads. This method makes use of the advantages of WIM system and traffic information acquisition system based on linear CCD imaging, and combines with manual observation on the spot to accurately determine the type of vehicle, axle load mass, speed, etc. 2. Based on the measured data of Hebei and Zhejiang, the paper makes a comprehensive and systematic study and comparative analysis on the load of highway vehicles by using the method of probability and mathematical statistics, and makes a comparison and analysis of the speed of typical vehicles. The probability distribution of important parameters, such as vehicle time distance, axle load mass and so on, is tested by K-S test, and the probability distribution function according to its characteristics is extracted. 3, compared with the existing highway and bridge traffic load research, An important feature of this study is the systematic and in-depth analysis of the load of heavy vehicles for the first time. According to the statistical sample data of Hebei, Shanghai and Zhejiang, the distribution law and statistical characteristics of the main parameters of the heavy truck load are studied, and the characteristics of the extra heavy vehicle load in these three regions are compared and analyzed. In order to provide an important basis for the safety and reliability assessment of existing bridges. 4. Based on the measured traffic load data, the fatigue load spectrum of medium and small span highway bridges is studied. According to the principle of equivalent fatigue damage, the equivalent fatigue vehicle model is obtained by calculation and analysis, and the fatigue load spectrum suitable for Hebei and Zhejiang regions is deduced. Based on S-N curve and Miner criterion, fatigue damage value of bridge structure caused by fatigue vehicle is studied.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U441.2;U448.14
本文編號：2217943
[Abstract]:With the rapid development of transportation industry in China in recent decades, the traffic load information and characteristics of highway and bridge have changed, which need to be updated in time through systematic investigation and research, so as to further understand the impact of traffic load on infrastructure. This research carries on the long-term real-time monitoring to the highway traffic load in the typical area, through carries on the careful and scientific analysis to the real-time monitoring data, has carried on the thorough and systematic research to the typical area traffic load characteristic. The results of the study can effectively help to establish a load model that reflects the actual traffic characteristics, and it is of great significance to determine the design criteria of vehicle loads and to evaluate the safety and reliability of bridges. Based on the dynamic weighing (WIM,weigh-in-motion) equipment and the traffic information acquisition system based on linear CCD imaging, the traffic loads in several typical areas in China are measured in this paper, and the real-time monitoring data are analyzed from the following two aspects. On the one hand, the random characteristics and statistical rules of traffic load characteristic parameters are analyzed, and the corresponding fatigue load spectrum is deduced. On the other hand, the load data of heavy-duty vehicles in Hebei, Shanghai and Zhejiang are extracted. The load characteristics of extra heavy vehicles in three areas are studied comprehensively. The main contents are as follows: 1. This paper presents an accurate and reliable method for collecting traffic loads. This method makes use of the advantages of WIM system and traffic information acquisition system based on linear CCD imaging, and combines with manual observation on the spot to accurately determine the type of vehicle, axle load mass, speed, etc. 2. Based on the measured data of Hebei and Zhejiang, the paper makes a comprehensive and systematic study and comparative analysis on the load of highway vehicles by using the method of probability and mathematical statistics, and makes a comparison and analysis of the speed of typical vehicles. The probability distribution of important parameters, such as vehicle time distance, axle load mass and so on, is tested by K-S test, and the probability distribution function according to its characteristics is extracted. 3, compared with the existing highway and bridge traffic load research, An important feature of this study is the systematic and in-depth analysis of the load of heavy vehicles for the first time. According to the statistical sample data of Hebei, Shanghai and Zhejiang, the distribution law and statistical characteristics of the main parameters of the heavy truck load are studied, and the characteristics of the extra heavy vehicle load in these three regions are compared and analyzed. In order to provide an important basis for the safety and reliability assessment of existing bridges. 4. Based on the measured traffic load data, the fatigue load spectrum of medium and small span highway bridges is studied. According to the principle of equivalent fatigue damage, the equivalent fatigue vehicle model is obtained by calculation and analysis, and the fatigue load spectrum suitable for Hebei and Zhejiang regions is deduced. Based on S-N curve and Miner criterion, fatigue damage value of bridge structure caused by fatigue vehicle is studied.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U441.2;U448.14
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