【摘要】：池州長(zhǎng)江公路大橋主橋?yàn)橹骺?28m的雙塔雙索面單側(cè)混合梁斜拉橋。橋塔上塔柱設(shè)置6道鋼結(jié)構(gòu)上橫梁,上橫梁均采用箱形斷面,豎向中心距均為13.5m。單個(gè)鋼橫梁長(zhǎng)7m、寬5.5m、高7m,劃分為4個(gè)塊段,各塊段間采用M30高強(qiáng)度螺栓進(jìn)行拼接。斜拉索分組錨固于各道鋼橫梁橫隔板之間的錨固構(gòu)造內(nèi),形成索塔體外錨固體系。鋼橫梁端部與橋塔上塔柱接觸位置設(shè)置預(yù)埋鋼板,通過(guò)高強(qiáng)度螺桿及剪力釘將鋼橫梁與混凝土上塔柱牢固連接。每道鋼橫梁外部設(shè)置封閉鋼珠結(jié)構(gòu)。采用有限元軟件對(duì)橋塔上橫梁錨固結(jié)構(gòu)進(jìn)行受力分析,結(jié)果表明結(jié)構(gòu)受力均滿足規(guī)范要求。
[Abstract]:The main bridge of Chizhou Changjiang River Highway Bridge is a cable-stayed bridge with two towers and two cable-plane single side mixed beams with main span of 828 m. There are 6 steel structure upper crossbeams on the tower, all of them adopt box section, and the vertical center distance is 13.5m. The single steel beam is 7 m long, 5.5 m wide and 7 m high. It is divided into 4 blocks, and M30 high strength bolts are used in each segment. The cable-stayed cable group is anchored in the Anchorage structure between the steel beams and the transverse divisions to form the external Anchorage system of the cable tower. A steel plate is set at the end of the steel beam and the tower column of the bridge tower. The steel crossbeam is firmly connected with the tower column of concrete by high strength screw and shear nail. Each steel beam is provided with a closed steel ball structure outside. The finite element software is used to analyze the stress of the Anchorage structure on the bridge tower, and the results show that the stress of the structure meets the requirements of the code.
【作者單位】： 中鐵大橋勘測(cè)設(shè)計(jì)院集團(tuán)有限公司;
【分類號(hào)】：U448.27

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