【摘要】：我國早期修建的高速公路大多已不能滿足現(xiàn)有的交通需求,對原有高速公路改擴建迫在眉睫。合理的交通組織是保證高速公路改擴建實施的關(guān)鍵。本文依托高速公路改擴建工程項目,對改擴建交通組織的關(guān)鍵技術(shù)進行研究。根據(jù)高速公路改擴建施工特點,分析施工區(qū)通行能力和服務(wù)水平,在二級公路服務(wù)水平的基礎(chǔ)上,制定改擴建施工區(qū)服務(wù)水平的分級表;分析了改擴建交通組織方案的設(shè)計原則和設(shè)計思路,并對交通組織模式進行分析,重點研究了改擴建施工區(qū)長度和中央分隔帶開口長度的設(shè)置原則和方法;引入?yún)^(qū)塊鏈技術(shù),保障改擴建交通組織方案的實施;結(jié)合昌樟高速公路改擴建工程項目,將研究成果運用于實際工程,研究了改擴建施工模式、施工區(qū)長度以及中央分隔帶開口長度,并設(shè)計路基路面交通組織方案,采用左右幅分區(qū)并行施工的方式,分八個階段完成改擴建工程,施工期間各階段均可實現(xiàn)雙向四車道保通;針對改擴建交通組織方案構(gòu)建評價體系,分析評價指標(biāo),將路段飽和度、車速、平均密度以及延誤時間作為評價指標(biāo),根據(jù)施工區(qū)服務(wù)水平的分級表,制定評價標(biāo)準(zhǔn);利用Vissim仿真軟件對交通組織方案進行分析,運用動態(tài)綜合評價法對仿真結(jié)果進行評價。結(jié)果表明:改擴建施工第一階段到第三階段的路段服務(wù)水平處于三級服務(wù)水平上限;第四階段至第七階段的路段服務(wù)水平處于四級服務(wù)水平上限。所以,改擴建交通組織方案中每個施工階段施工期間路段服務(wù)水平為四級以上,滿足改擴建施工區(qū)最低服務(wù)水平為四級的要求。高速公路改擴建在現(xiàn)在以及未來交通基礎(chǔ)設(shè)施建設(shè)中發(fā)揮重要作用。目前,昌樟高速改擴建工程已經(jīng)建設(shè)完成,取得了良好的效果。本文的研究工作為改擴建交通組織提供了技術(shù)支持,對改擴建交通組織具有重要的意義。
[Abstract]:Most of the highway built in the early stage of our country can not meet the existing traffic demand, so it is urgent to rebuild and expand the original highway. Reasonable traffic organization is the key to ensure the implementation of highway reconstruction and expansion. Based on the reconstruction and expansion project of expressway, this paper studies the key technology of traffic organization of reconstruction and expansion. According to the construction characteristics of expressway reconstruction and expansion, the capacity and service level of the construction area are analyzed. On the basis of the service level of the secondary highway, the classification table of the service level of the reconstruction and extension construction area is drawn up. The design principles and ideas of traffic organization scheme are analyzed, and the traffic organization mode is analyzed. The setting principles and methods of the length of reconstruction and extension construction area and the opening length of central partition belt are mainly studied. Introducing block chain technology to ensure the implementation of the traffic organization plan for reconstruction and expansion; Combined with the Changshang expressway reconstruction and expansion project, the research results are applied to the actual project. The construction mode, the length of construction area and the opening length of the central partition belt are studied, and the traffic organization scheme of roadbed and pavement is designed. The reconstruction and expansion project can be completed in eight stages by parallel construction of the left and right sides. During the construction period, the two-way four-lane transmission can be achieved in each stage. According to the evaluation system of traffic organization scheme, the evaluation index is analyzed, and the evaluation criteria are established according to the classification table of service level in construction area, taking the saturation of road section, speed, average density and delay time as evaluation indexes. Vissim simulation software is used to analyze the traffic organization scheme and dynamic comprehensive evaluation method is used to evaluate the simulation results. The results show that the service level of the section from the first stage to the third stage of the reconstruction and expansion construction is in the upper limit of the service level of the third stage, and the service level of the section from the fourth stage to the seventh stage is in the upper limit of the service level of Therefore, the service level of each construction stage in the traffic organization scheme is above level 4, which meets the requirement that the minimum service level of the reconstruction and expansion construction area is grade 4. Highway reconstruction and expansion plays an important role in the construction of transportation infrastructure now and in the future. At present, Changshang high-speed reconstruction and expansion project has been completed, and achieved good results. The research work in this paper provides technical support for the reconstruction and expansion of traffic organization, and it is of great significance to the reconstruction and expansion of traffic organization.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U418.8;U491

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