本文選題：避險(xiǎn)車道 + 失控車輛��； 參考：《廣西大學(xué)》2017年碩士論文

【摘要】：避險(xiǎn)車道指為使主線車流中的制動(dòng)失效車輛能夠減慢行駛速度并且最終停止下來,在主線道路旁所設(shè)置的一種輔助車道,供制動(dòng)失效車輛緊急避險(xiǎn)使用。我國由于避險(xiǎn)車道設(shè)計(jì)缺陷而引發(fā)的制動(dòng)失效車輛沖出避險(xiǎn)車道末端和側(cè)翻等事故率遠(yuǎn)遠(yuǎn)高于發(fā)達(dá)國家。因此,需對(duì)避險(xiǎn)車道設(shè)計(jì)提出針對(duì)性的處置措施。本文通過對(duì)避險(xiǎn)車道技術(shù)參數(shù)和配套交通安全設(shè)施進(jìn)行闡述,總結(jié)了避險(xiǎn)車道常見事故類型。并針對(duì)常見事故類型中占有絕對(duì)比例的車輛沖出避險(xiǎn)車道以及在制動(dòng)床內(nèi)側(cè)翻事故,結(jié)合汽車?yán)碚?分析其事故機(jī)理。為了在減少實(shí)車足尺實(shí)驗(yàn)的情況下,研究制動(dòng)失效車輛在集料作用下的車輛宏觀力學(xué)響應(yīng),本文結(jié)合離散元顆粒流仿真工具PFC2D建立了輪胎與制動(dòng)床集料之間的制動(dòng)仿真模型,采用靜力三軸實(shí)驗(yàn)對(duì)模型參數(shù)進(jìn)行標(biāo)定,通過與實(shí)車足尺實(shí)驗(yàn)對(duì)比,驗(yàn)證了模型的可行性,從而對(duì)不同集料材料、礫石粒徑下制動(dòng)失效車輛的宏觀力學(xué)響應(yīng)分析,得出了礫石制動(dòng)效果明顯優(yōu)于碎石,且粒徑為8.3-15.7mm的礫石集料的制動(dòng)效果最優(yōu)的結(jié)論。同時(shí),結(jié)合避險(xiǎn)車道設(shè)計(jì)技術(shù)參數(shù)推薦值,采用車輛動(dòng)力學(xué)仿真軟件TruckSim建立了避險(xiǎn)車道道路線形模型,分析制動(dòng)失效車輛在主線為直線、右轉(zhuǎn)曲線和左轉(zhuǎn)曲線的情況下駛?cè)虢菫?°、10°和15°的避險(xiǎn)車道的車輛操縱性,得出不同主線線形下避險(xiǎn)車道駛?cè)虢堑脑O(shè)置建議值。最后結(jié)合本文的研究成果,針對(duì)廣西百羅高速公路3#避險(xiǎn)車道的設(shè)置,提出合理整改措施,本研究對(duì)豐富和完善我國避險(xiǎn)車道設(shè)計(jì)規(guī)范或指南及提升避險(xiǎn)車道安全水平具有重要理論意義和工程應(yīng)用價(jià)值。
[Abstract]:Safe havens refers to a kind of auxiliary lane set up beside the main line road to make the brake failure vehicle in the main line flow slow down and finally stop to be used for emergency avoidance of the brake failure vehicle. The accident rate of brake failure caused by design defects of safe havens in China is much higher than that in developed countries. Therefore, it is necessary to put forward targeted measures to avoid risk lane design. In this paper, the technical parameters and traffic safety facilities of safe havens are expounded, and the common accident types of safe havens are summarized. In the light of the absolute proportion of the common accident types of vehicles rushing out of the safe lane and overturning in the brake bed, the mechanism of the accident is analyzed in combination with the automobile theory. In order to study the macro mechanical response of brake failure vehicle under the action of aggregate, the braking simulation model between tire and brake bed aggregate is established with the discrete element particle flow simulation tool PFC2D. The model parameters are calibrated by static three-axis test. The feasibility of the model is verified by comparing the model with full-scale experiments, and the macroscopic mechanical response of brake failure vehicle under different aggregate materials and gravel particle size is analyzed. It is concluded that the braking effect of gravel is better than that of gravel, and the braking effect of gravel aggregate with 8.3-15.7mm particle size is the best. At the same time, combined with the recommended value of the technical parameters of the design of the safe havens, the vehicle dynamics simulation software TruckSim is used to establish the road alignment model of the safe havens, and it is analyzed that the brake failure vehicles are straight line in the main line. In the case of right turn curve and left turn curve, the vehicle maneuverability of the safe lane with 5 擄10 擄and 15 擄angle is obtained. Finally, based on the research results of this paper, the reasonable rectification measures are put forward in view of the setting of the safe havens of Guangxi Bailuo Expressway. This study has important theoretical significance and engineering application value to enrich and perfect the design criterion or guide of safe lane in our country and to improve the safety level of safe lane.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U491.223;U461

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本文編號(hào)：1937241