本文關(guān)鍵詞： 斜拉橋 組合梁 鋼箱梁 斜拉索 橋塔 基礎(chǔ) 經(jīng)濟性能 平均索法 軸力 材料單價系數(shù)　出處：《世界橋梁》2017年05期 　論文類型：期刊論文

【摘要】：為推動組合梁斜拉橋向更大跨徑發(fā)展,以常規(guī)兩塔斜拉橋為例,開展大跨徑組合梁斜拉橋經(jīng)濟性能研究。將斜拉橋分為斜拉索、橋塔、主梁、基礎(chǔ)等部分,利用"平均索法"計算各部件軸力,根據(jù)軸力大小分別推導(dǎo)得到其材料用量的計算公式,引入材料單價系數(shù),得到單位橋面面積造價,進而計算組合梁斜拉橋各部件的造價與跨徑的關(guān)系,并與同等跨徑的鋼箱梁斜拉橋的經(jīng)濟性能進行對比分析。結(jié)果表明:與鋼箱梁相比,組合梁斜拉橋充分利用混凝土材料抗壓性能性價比高的特點,減小了斜拉橋體系中造價占比較大的主梁費用;組合梁斜拉橋主梁自重較大,斜拉索、橋塔、基礎(chǔ)等造價相對較高;在一般地質(zhì)(樁長約50m)、較小場地風(fēng)速條件下,組合梁斜拉橋的經(jīng)濟跨徑界限可達900m。
[Abstract]:In order to promote the development of cable-stayed bridge to larger span, a conventional two tower cable-stayed bridge as an example, to carry out research on economic performance of large span span cable-stayed bridge. The cable-stayed bridge is divided into cable, tower, girder, part of the foundation, the average axial stress calculation method of each component, using "cable" according to the axial force are derived the calculating formula of material dosage, introducing price coefficient, unit cost and deck area, calculate the relationship between cost and the span of the cable-stayed bridge components, and with the same span cable-stayed bridge with steel box girder of the economic performance were analyzed. The results showed that: compared with steel box beam in combination, make full use of compressive properties of concrete material with high performance girder cable-stayed bridge, reduces the cost of cable-stayed girder cost relatively large bridge system; cable-stayed bridge girder weight larger cable, tower foundation, the cost is relatively high; In general geology (pile length is about 50m), under the condition of small field wind speed, the economic span limit of the composite beam cable-stayed bridge can reach 900m.

【作者單位】： 同濟大學(xué)橋梁工程系;上海市政工程設(shè)計研究總院(集團)有限公司;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)項目(2013CB03603)
【分類號】：U448.27
【正文快照】： 1引言據(jù)統(tǒng)計,目前跨度超過650 m的大跨徑橋梁,加勁梁普遍采用正交異性鋼橋面板結(jié)構(gòu)[1]。近年來這類橋梁的鋼橋面疲勞開裂、鋪裝層損壞等問題嚴重[2-3]。從經(jīng)濟性和耐久性考慮,采用組合橋面是解決上述問題的選擇之一[4-5]。組合鋼板梁斜拉橋能適應(yīng)650m左右跨徑。組合梁斜拉橋如，

本文編號：1473211