连续刚构

连续刚构桥Continuous Rigid Frame Bridges

1 番禺洛溪桥Luoxi Bridge

2 沅陵沅水桥Yuanling Bridge over Yuanshui

3 尤溪丘墩桥Qiudun Bridge

4 东明黄河大桥Dongming Bridge over Yellow River

5 台北忠孝桥Zhongxiao Bridge

6 黄石长江大桥Huangshi Bridge over Yangtze River

7 丰城赣江桥Fengcheng Bridge over Gangjiang

8 雉山漓江桥Zhishan Bridge over Lijiang

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番禺洛溪桥Luoxi Bridge

洛溪桥位于广东省广州市南郊，跨珠江。是目前国内最大的预应力混凝土连续-刚构桥。桥总长1916.04m，宽15.5m 。要求通航净高34m，净宽10m，合主跨的1/18，跨中梁高3m，合主跨的1/60。桥宽15m 。主梁采用单箱单室，并采用大吨位的VSL 群锚锚固系统，张拉力4275kN，为目前国内之最大者；预应力钢丝束最大长度逾190m；采用三向预应力配筋，悬臂浇筑施工。主孔桥墩采用双壁式薄壁空心墩，壁厚50cm，具有较小的抗推刚度。墩外设国内首创的人工岛以防船舶撞击，岛呈喇叭形，顶部直径28m，全高20m。该桥引桥甚长，总长度有1376.24m，按经济跨度分孔，有16m、32m两种，因此全桥单位面积造价很低。于1988年8月建成通车。

广东省公路勘察设计院、交通部公路规划设计院设计，广东省公路工程处施工。

Location: Guangzhou, Guangdong Prov.

Main span: 180m

· Largest P.C. continuous rigid frame bridge in Asia at present

· Bridge spans: 65+125+180+110(m)

· Superstructure: single box cross section. VSL prestressing system with largest

post-tension force (4275kN) and longest prestressing tendon (over 190m)in China

· Erected by cantilever castingCompleted in Aug. 1988

Designed by Hughway Survey and Design Institute of Guangdong Prov.

Constructed by Highway Engineering Dept. Of Guangdong Prov.

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沅陵沅水桥Yuanling Bridge over Yuanshui

沅陵沅水桥位于湖南省沅陵县跨越沅水，桥址处于五强溪水电站库容区内。桥全长767.3m，桥宽16m，主桥采用85+140+85+42(m)4跨不对称预应力混凝土连续-刚构桥。最高桥墩达52.4m，为双肢薄壁柔性墩，双肢中距6.8m，引桥为9孔42m预应力混凝土连续梁。该桥主要特点：库区桥梁，桥高水深，为解决现浇施工边跨搭设支

湖南省交通规划勘察设计院设计，湖南省路桥公司施工。

Location: Yuanling, Hunan Prov.

Main span: 140m

·85+140+85+42(m) P.C. continuous rigid frame bridge in the reservoir district of a water

架的困难，选用不对称分孔，并用顶推法施工边段；主桥预应力采用3000kNXM式锚具及无粘结预应力筋设计；用小吨位千斤顶张拉大吨位钢索；引桥及边段多点顶推选用特置新型盆式橡胶支座，施工时的滑道与永久支座合一；顶推施工中改进水平千斤顶装置，并用微机控制顶推全过程；双柱式墩采用无帽梁结构，在柱顶下0.5m处设一系梁，节省材料，方便施工；基础采用Φ3.5m大直径嵌岩钻孔桩。于1991年建成。electric station

·Erected by cantilever casting combined with incremental launching method

Completed in 1991

Designed by Communication Planning Survey and Design Institute of Hunan Prov.

Constructed by Road and Bridge Co. of Hunan Prov.

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尤溪丘墩桥Qiudun Bridge

丘墩桥位于福建省尤溪县尤溪口镇，是目前中国顶推法施工中最大跨度的预应力混凝土梁桥，桥总长250m，宽2x1.0+7(m)。主桥在顶推施工阶段为60+76+60(m)撑架式预应力混凝土连续箱梁，运营阶段体系转换为撑架式预应力混凝土连续-刚构桥。主桥墩由撑架、上墩、中墩和基础组成，兼有施工和运营不同阶段的受力性能。边墩采用双柱式墩和挖孔桩基础。于1992年3月建成。

交通部公路科学研究所、福建省交通规划设计院设计，省第二公路工程公司施工。

Location: Yiuxi, Fujian Prov.

Main span: 76m

·China's largest P.C. continuous box girder frame bridge using in-cremental launching method in erection at present ·Superstructure: P.C. continuous box girder in erection, continuous rigid frame in service Completed in March 1992

Designed by Highway Research Institute, Ministry of Communication; Communication Planning and Design Institute of Fujian Prov. Constructed by the 2nd Highway Engineering Co. of Fujian Prov.