浅覆盖层大跨距起升式贝雷栈桥设计
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摘要
桐庐县S305(23省道)梅蓉至杭新景高速凤川互通公路工程柴埠大桥为双塔中央索面预应力混凝土箱梁斜拉桥,主桥段位于富春江水域,桥位所处航道为规划内河四级航道,要求单孔双向通航。同时,受到上游富春江水电站的影响,水位涨落频繁,10a一遇最大水位差达到9.09m,现场施工难度大。结合以往工程经验,采用了合理的结构,设计了可起升式的贝雷栈桥,在满足了河道通航净高的要求下,使栈桥的稳定性得到了提高。通过理论计算及工程实例验证了该栈桥设计的合理性及使用的安全性,可为类似的工程施工提供参考和借鉴。
Chaibu bridge is a prestressed concrete Cable-stayed bridge with Central Cable-plane.The main bridge is located in the Fuchun River,which is belong to grade four waterway under planning.The channel is single-hole bidirectional navigation. The Fuchun River water level which affected by Fuchun River hydropower station in the upriver is fluctuating frequently, maximum available water level difference is 9.09 m in the past 10 years.The difficulty of the site operation is very hard. Combined with previous experience,we design the lifting bailey trestle which improve the stability of the trestle.meanwhile, the trestle meet the navigable clear height of the main channel. The lifting bailey trestle is safe and rational that has already been proved by the theoretical calculation and the project,and the bailey trestle also as a reference for the similar projects.
Chaibu bridge is a prestressed concrete Cable-stayed bridge with Central Cable-plane.The main bridge is located in the Fuchun River,which is belong to grade four waterway under planning.The channel is single-hole bidirectional navigation. The Fuchun River water level which affected by Fuchun River hydropower station in the upriver is fluctuating frequently, maximum available water level difference is 9.09 m in the past 10 years.The difficulty of the site operation is very hard. Combined with previous experience,we design the lifting bailey trestle which improve the stability of the trestle.meanwhile, the trestle meet the navigable clear height of the main channel. The lifting bailey trestle is safe and rational that has already been proved by the theoretical calculation and the project,and the bailey trestle also as a reference for the similar projects.
引文
【1】周伟明.跨越繁忙通航河道超大型门式起重机轨道支架设计[J].公路,2016(12):92-94.
【2】周力毅,黄赣萍,周鑫.采用加强型贝雷梁的桥梁支架施工工艺[J].公路,2012(5):157-160.
【3】胡亚峰.大跨度连续梁贝雷梁钢管柱式支架现浇施工技术[J].铁道建筑技术,2012(S1):29-34.
【2】周力毅,黄赣萍,周鑫.采用加强型贝雷梁的桥梁支架施工工艺[J].公路,2012(5):157-160.
【3】胡亚峰.大跨度连续梁贝雷梁钢管柱式支架现浇施工技术[J].铁道建筑技术,2012(S1):29-34.