Disquisition Of Short-bed Method Prefabrication PC Girder Technology

The prestressed concrete girder bridges (PC girder bridges) were assembled with P.C section girder cantilever or the whole aperture, the core of this kind of construction technology lies in prefabricating the concrete section girder. Now, there are two methods to adopt at home and abroad: One is Long-bed Method and the other is Short-bed Method. "Long-bed Method" has been adopted more than 10 years at home, and "Short-bed Method" has been adopted extensively in the developed area such as America and Sweden. Our company , The Third Engineering CO, .LTD Of China ZhongTie Major Bridge Engineering Group (MBEC3),finished the Precasting Concrete Segmental Girders of Shum Wan Sea-Crossing Bridge in Hong Kong with Short-bed Method. It was the first time that Short-bed Method had been adopted in our country, author launched a targeted short-term sets of prefabricated box girder PC technology research.Those the resent research situation in domestic and overseas, technique level, and construction theory in Short-bed Method prefabrication technology are introduced in this text, and disposal of girder scene, design mould and trolley of systemic, the technology of the manufacture installment and use, technique flow, the linear survey and control technology, management in local construction are researched beside. Domestic foreground of Short-bed Method prefabrication technology is analyzed. This article proposes the construction technology of the section girders factorization and the assembly line matching prefabrication unit set when the PC girder bridge adopt the method of the precast concrete stage bracket assembles. What's more, this technology has been successfully used in the project of the Precasting Concrete Segmental Girders of Shum Wan Sea-Crossing Bridge, Hong Kong with good effect.The mature application of the Short-bed Method prefabrication PC girder technology will certainly play an active role in promoting construction profession at home and lead construction of bridge domestic a more environmental way.