【摘要】：近年來,可靠度方法成為結(jié)構(gòu)設(shè)計發(fā)展的一個重要方向之一。采用可靠度方法進(jìn)行碼頭結(jié)構(gòu)設(shè)計,能否真正反映實(shí)際情況,與可靠度計算中變量統(tǒng)計參數(shù)的準(zhǔn)確與否有關(guān)。目前已對碼頭堆貨荷載進(jìn)行過統(tǒng)計分析,對集裝箱碼頭后方堆場的集裝箱荷載統(tǒng)計不多。本文對國內(nèi)南方和北方兩個代表性地區(qū)集裝箱碼頭堆場的荷載進(jìn)行了統(tǒng)計分析,建立了集裝箱碼頭堆場荷載的概率模型。一方面可了解當(dāng)前集裝箱碼頭堆場荷載的情況,另一方面為未來集裝箱碼頭堆場的可靠度設(shè)計提供支持。本文研究內(nèi)容的主要結(jié)論如下： (1)介紹了概率論、數(shù)理統(tǒng)計、隨機(jī)過程和隨機(jī)場的基本概念,以及工程荷載分析中常用的隨機(jī)變量、隨機(jī)過程模型和模型中參數(shù)的估計方法。 (2)對大連港集裝箱碼頭堆場進(jìn)行了集裝箱荷載調(diào)查和統(tǒng)計分析；采用不平穩(wěn)隨機(jī)場模型,建立了集裝箱堆場的局部荷載模型和整體荷載模型,確定了集裝箱荷載的統(tǒng)計參數(shù)。研究表明,大連港集裝箱碼頭堆場50年設(shè)計基準(zhǔn)期的局部荷載最大值服從極值Ⅰ型分布,平均值為89146.56kg,標(biāo)準(zhǔn)差為24664.42kg,變異系數(shù)為0.2767；50年設(shè)計基準(zhǔn)期的整體荷載最大值也服從極值Ⅰ型分布,平均值為1820.31kg/m2,變異系數(shù)為0.1190。 (3)對廣州南沙港集裝箱碼頭一期工程堆場進(jìn)行了集裝箱荷載調(diào)查和統(tǒng)計分析；采用不平穩(wěn)隨機(jī)場模型,建立了集裝箱堆場的局部荷載模型和整體荷載模型,確定了集裝箱荷載的統(tǒng)計參數(shù)。研究表明,廣州南沙港集裝箱碼頭一期工程堆場50年設(shè)計基準(zhǔn)期的局部荷載最大值服從極值Ⅰ型分布,平均值為72963.48kg,標(biāo)準(zhǔn)差為10687.92kg,變異系數(shù)為0.1465；50年設(shè)計基準(zhǔn)期的整體荷載最大值也服從極值Ⅰ型分布,平均值為1772.83kg/m2,變異系數(shù)為0.1435。 (4)對廣州南沙港集裝箱碼頭二期工程堆場進(jìn)行了集裝箱荷載調(diào)查和統(tǒng)計分析；采用不平穩(wěn)隨機(jī)場模型,建立了集裝箱堆場的局部荷載模型和整體荷載模型,確定了集裝箱荷載的統(tǒng)計參數(shù)。研究表明,廣州南沙港集裝箱碼頭二期工程堆場50年設(shè)計基準(zhǔn)期的局部荷載最大值服從極值Ⅰ型分布,平均值為61237.58kg,標(biāo)準(zhǔn)差為9161.07kg,變異系數(shù)為0.1496；50年設(shè)計基準(zhǔn)期的整體荷載最大值也服從極值Ⅰ型分布,平均值為1906.49kg/m2,變異系數(shù)為0.2149。
[Abstract]:In recent years, reliability method has become one of the important directions of structural design. Whether the reliability method can really reflect the actual situation of wharf structure design is related to the accuracy of variable statistical parameters in reliability calculation. At present, the stowage load of the dock has been statistically analyzed, and the statistics of the container load at the rear yard of the container terminal is not much. In this paper, the load of container terminal yard in the south and north of China is analyzed and the probabilistic model of the loading is established. On the one hand, it can understand the current loading of container terminal yard, on the other hand, it can support the reliability design of container terminal yard in the future. The main conclusions of this paper are as follows: (1) the basic concepts of probability theory, mathematical statistics, stochastic processes and random fields, and the random variables commonly used in engineering load analysis are introduced. Methods for estimating the parameters of stochastic process models and models. (2) carrying on the container load investigation and statistical analysis to the container terminal yard of Dalian Port; Using the unsteady random field model, the local load model and the integral load model of the container yard are established, and the statistical parameters of the container load are determined. The results show that the maximum value of local load in the 50 years design datum period of container terminal of Dalian Port is distributed according to type I of extreme value, the average value is 89146.56 kg, the standard deviation is 24664.42 kg, and the coefficient of variation is 0.2767; The maximum value of the whole load in the design base period of 50 years is also distributed from the extreme value type I, the average value is 1820.31 kg / m ~ 2, and the coefficient of variation is 0.1190. (3) the container load investigation and statistical analysis are carried out on the first stage container yard of Guangzhou Nansha Port Container Terminal; Using the unsteady random field model, the local load model and the integral load model of the container yard are established, and the statistical parameters of the container load are determined. The results show that the maximum value of local load in 50 years design datum period of container terminal of Nansha Port in Guangzhou is distributed from extreme value type 鈪，

本文編號：2369508