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A platform for research: civil engineering, architecture and urbanism
Ramp bridge prefabricated section and cast-in-place section transition structure and synchronous construction method
The invention relates to the technical field of bridge construction, in particular to a ramp bridge prefabricated section and cast-in-place section transition structure and a synchronous construction method.The ramp bridge prefabricated section and cast-in-place section transition structure comprises the following steps that S1, the distribution position of a bridge body is calculated, and an abutment foundation pit is excavated in the area corresponding to the end of a narrow steel box girder; s2, abutment piers are constructed in the abutment foundation pit, and the abutment piers are supported through pier columns and suspended in the abutment foundation pit; s3, the narrow steel box girder is hoisted, the end of the narrow steel box girder is in lap joint with the top of the abutment pier, meanwhile, primary concrete pouring is conducted in the abutment foundation pit, and an abutment base is formed; and S4, a prefabricated section is hoisted from the end of the narrow steel box girder and fixedly connected to the narrow steel box girder, meanwhile, secondary concrete pouring is conducted on the platform base, and a cast-in-place section is manufactured. By means of the method, multi-section synchronous construction can be carried out, the prefabrication and cast-in-place construction mode guarantees the quality of the prefabricated sections by finely manufacturing the prefabricated sections in a factory, then the prefabricated sections are connected by pouring the cast-in-place sections on site, and therefore site construction is simplified, the construction speed is increased, and the engineering quality is guaranteed.
本发明涉及桥梁建设技术领域，具体涉及一种匝道桥预制段与现浇段过度结构及同步施工方法，步骤如下：S1、计算桥体分布位置，并在对应窄幅钢箱梁端部区域开挖台基坑；S2、在台基坑内构建台墩，台墩通过墩柱支撑，并悬于台基坑内；S3、吊装窄幅钢箱梁，并使窄幅钢箱梁端部搭接于台墩顶部，同时对台基坑内进行一次浇注混凝土，形成台基座；S4、从窄幅钢箱梁端部吊装预制段，并固定连接在窄幅钢箱梁上，同时在台基座上进行二次浇注混凝土，制作现浇段。利用本发明可进行多区段同步施工，其预制加现浇的施工方式通过工厂精细制作预制段保证了预制段的质量，再通过现场浇注现浇段连接各预制段，从而简化了现场施工、加快施工速度，保证工程质量。
Ramp bridge prefabricated section and cast-in-place section transition structure and synchronous construction method
The invention relates to the technical field of bridge construction, in particular to a ramp bridge prefabricated section and cast-in-place section transition structure and a synchronous construction method.The ramp bridge prefabricated section and cast-in-place section transition structure comprises the following steps that S1, the distribution position of a bridge body is calculated, and an abutment foundation pit is excavated in the area corresponding to the end of a narrow steel box girder; s2, abutment piers are constructed in the abutment foundation pit, and the abutment piers are supported through pier columns and suspended in the abutment foundation pit; s3, the narrow steel box girder is hoisted, the end of the narrow steel box girder is in lap joint with the top of the abutment pier, meanwhile, primary concrete pouring is conducted in the abutment foundation pit, and an abutment base is formed; and S4, a prefabricated section is hoisted from the end of the narrow steel box girder and fixedly connected to the narrow steel box girder, meanwhile, secondary concrete pouring is conducted on the platform base, and a cast-in-place section is manufactured. By means of the method, multi-section synchronous construction can be carried out, the prefabrication and cast-in-place construction mode guarantees the quality of the prefabricated sections by finely manufacturing the prefabricated sections in a factory, then the prefabricated sections are connected by pouring the cast-in-place sections on site, and therefore site construction is simplified, the construction speed is increased, and the engineering quality is guaranteed.
本发明涉及桥梁建设技术领域，具体涉及一种匝道桥预制段与现浇段过度结构及同步施工方法，步骤如下：S1、计算桥体分布位置，并在对应窄幅钢箱梁端部区域开挖台基坑；S2、在台基坑内构建台墩，台墩通过墩柱支撑，并悬于台基坑内；S3、吊装窄幅钢箱梁，并使窄幅钢箱梁端部搭接于台墩顶部，同时对台基坑内进行一次浇注混凝土，形成台基座；S4、从窄幅钢箱梁端部吊装预制段，并固定连接在窄幅钢箱梁上，同时在台基座上进行二次浇注混凝土，制作现浇段。利用本发明可进行多区段同步施工，其预制加现浇的施工方式通过工厂精细制作预制段保证了预制段的质量，再通过现场浇注现浇段连接各预制段，从而简化了现场施工、加快施工速度，保证工程质量。
Ramp bridge prefabricated section and cast-in-place section transition structure and synchronous construction method
匝道桥预制段与现浇段过度结构及同步施工方法
ZHANG QINGMING (author)
2023-11-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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