發(fā)布時(shí)間：2019-02-21 17:54

【摘要】：波形鋼腹板預(yù)應(yīng)力混凝土部分斜拉橋兼具梁式橋剛度大、斜拉橋重量輕的優(yōu)點(diǎn),比預(yù)應(yīng)力混凝土部分斜拉橋的主梁自重更輕、材料利用效率更高,是一種綜合性能優(yōu)異的新型橋梁。但各地設(shè)計(jì)波形鋼腹板預(yù)應(yīng)力混凝土橋的標(biāo)準(zhǔn)與方法不統(tǒng)一,整體仍處在積累經(jīng)驗(yàn)的階段。鄭州朝陽溝水庫大橋建成通車于2015年,其188m主跨是目前波形鋼腹板預(yù)應(yīng)力混凝土部分斜拉橋的世界最大跨度。本文以鄭州朝陽溝水庫大橋?yàn)槔?系統(tǒng)研究了波形鋼腹板預(yù)應(yīng)力混凝土部分斜拉橋的設(shè)計(jì)方法、標(biāo)準(zhǔn)體系,并借助通用有限元分析程序,分析了鄭州朝陽溝水庫大橋的靜力學(xué)性能、動(dòng)力學(xué)性能,主要形成以下研究結(jié)論:1.設(shè)計(jì)波形鋼腹板預(yù)應(yīng)力混凝土箱梁橋應(yīng)在《工程結(jié)構(gòu)可靠性設(shè)計(jì)統(tǒng)一標(biāo)準(zhǔn)》的框架內(nèi),采用各地方專業(yè)標(biāo)準(zhǔn)中較全面的技術(shù)要求與驗(yàn)算內(nèi)容。2.朝陽溝水庫大橋靜力分析表明,大橋的承載能力極限狀態(tài)、正常使用極限狀態(tài)、短暫狀況構(gòu)件應(yīng)力、持久狀況構(gòu)件應(yīng)力符合我國部頒標(biāo)準(zhǔn)要求,符合波形鋼腹板預(yù)應(yīng)力混凝土橋梁各地方標(biāo)準(zhǔn)要求;大橋的風(fēng)險(xiǎn)分析表明,施工期及運(yùn)營期的結(jié)構(gòu)主要安全風(fēng)險(xiǎn)可控。3.朝陽溝水庫大橋模態(tài)分析表明,其動(dòng)力學(xué)特性與預(yù)應(yīng)力混凝土部分斜拉橋相似,主梁扭轉(zhuǎn)不會(huì)在前六階模態(tài)出現(xiàn)。
[Abstract]:The corrugated steel web prestressed concrete partial cable-stayed bridge has the advantages of large stiffness and light weight of the cable-stayed bridge, which is lighter than that of the prestressed concrete partial cable-stayed bridge, and the material utilization efficiency is higher than that of the prestressed concrete partially cable-stayed bridge. It is a new type of bridge with excellent comprehensive performance. However, the design standards and methods of corrugated steel web prestressed concrete bridges are not uniform, and the whole is still in the stage of accumulated experience. Zhengzhou Chaoyang Gou Reservoir Bridge was built and opened to traffic in 2015. Its 188m main span is the world's largest span of the corrugated steel web prestressed concrete partial cable-stayed bridge. Taking Zhengzhou Chaoyang Gou Reservoir Bridge as an example, the design method, standard system and general finite element analysis program of prestressed concrete partial cable-stayed bridge with corrugated steel webs are studied systematically in this paper. The static and dynamic properties of Zhengzhou Chaoyang Reservoir Bridge are analyzed. The main conclusions are as follows: 1. The design of corrugated steel web prestressed concrete box girder bridge should be based on the framework of the Unified Standard for Reliability Design of Engineering structures and adopt the more comprehensive technical requirements and checking calculation contents of the local professional standards. 2. The static analysis of Chaoyang Reservoir Bridge shows that the ultimate state of the bridge's bearing capacity, the limit state of normal use, the stress of transient members and the stress of long-lasting members meet the requirements of the national standard issued by the Ministry of Foreign Affairs. Meet the requirements of local standards for prestressed concrete bridges with corrugated steel webs; The risk analysis of the bridge shows that the main safety risk of the structure during construction and operation period is controllable. 3. 3. Modal analysis of Chaoyang Reservoir Bridge shows that the dynamic characteristics of the bridge are similar to those of partially prestressed concrete cable-stayed bridges and the torsion of the main beam will not appear in the first six modes.
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U441;U448.27

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