本文選題：超限車輛 + 最優(yōu)路徑　； 參考：《湖南大學》2015年碩士論文

【摘要】：公路橋梁是道路的咽喉,如果遭到破壞坍塌,就會造成該橋梁所在的整條線路都不能允許車輛通行,嚴重限制了線路的通行能力。然而超限車輛通過橋梁時,其荷載很大,通常都會對橋梁造成相當大的損壞,因此在過橋前應該驗算超限車輛對橋梁產(chǎn)生的荷載效應以及橋梁結構的承載能力,并綜合經(jīng)濟性和風險性兩方面,依據(jù)驗算結果在超限車輛運輸前確定超限車的行駛路線。因此,建立一個安全、可靠、簡單、實用的最優(yōu)路徑選取的方法,為超限車輛快速選取通行最優(yōu)路線意義重大。本文主要從以下三個方面做了相關的研究工作:(1)運用可靠指標法從承載能力極限狀態(tài)和正常使用極限狀態(tài)兩方面分別判別廣西區(qū)某區(qū)域路網(wǎng)中橋梁超限車輛的通過權,即通過比較不同跨徑和設計荷載等級下各超限車輛的過橋可靠指標與規(guī)定的橋梁構件最低容許可靠指標的大小,判別超限車輛的通過權;(2)詳細介紹了兩種網(wǎng)絡連通可靠度的計算方法,即:串聯(lián)、并聯(lián)和混聯(lián)體系的失效概率估算法和基于事件樹的系統(tǒng)失效概率估算�；陲L險分析理論,提出了超限車輛最優(yōu)運輸路徑的確定方法;(3)以廣西某區(qū)域?qū)嶋H路網(wǎng)為實例,分別建立了廣西區(qū)五軸、六軸超限車輛總重與超限車通行網(wǎng)絡連通可靠度的線性回歸模型;運用風險理論,結合安全性與經(jīng)濟性對超限車可能通行各路徑總費用進行了計算,并確定超限車最優(yōu)路徑,大致得到了超限車從起點至終點各軸重段最優(yōu)路徑的判別準則。
[Abstract]:The highway bridge is the throat of the road. If it is destroyed and collapses, the entire line in which the bridge is located will not be allowed to allow vehicles to pass through, which seriously limits the capacity of the line. However, when the vehicle passes through the bridge, the load is very heavy, which usually causes great damage to the bridge. Therefore, the load effect caused by the over-limit vehicle on the bridge and the bearing capacity of the bridge structure should be checked before crossing the bridge. According to the results of checking calculation, the route of the overrun vehicle is determined before the transportation of the overrun vehicle. Therefore, it is of great significance to establish a safe, reliable, simple and practical optimal route selection method for overrun vehicles. This paper mainly from the following three aspects of the relevant research work: 1) using the reliability index method from the bearing capacity limit state and the normal use of the limit state of two aspects, respectively, in a regional road network in Guangxi area bridge over the passage of vehicles right. That is, by comparing the bridge reliability index of each overrun vehicle and the minimum allowable reliability index of bridge member under different span and design load grade, In this paper, two methods to calculate the reliability of network connectivity are introduced in detail, that is, the method of estimating the failure probability of series, parallel and hybrid systems and the estimation of system failure probability based on event tree. Based on the theory of risk analysis, this paper puts forward the method of determining the optimal transportation route for vehicles in excess of the limit. Taking the actual road network in a certain area of Guangxi as an example, the five-axis of Guangxi region is established separately. The linear regression model of the connectivity reliability between the total vehicle weight of six axle overrun vehicle and the traffic network of the overrun vehicle is established, and the total cost of each possible passage path of the overrun vehicle is calculated by using the risk theory, combined with the safety and economy, and the optimal route of the overrun vehicle is determined. The criteria for determining the optimal path of each axle load section from the starting point to the end of the overrun vehicle are obtained.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U447

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本文編號：1865637