Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bidirectional prefabricated segment splicing construction method for large-sized underpass
The invention discloses a bidirectional prefabricated segment splicing construction method for a large-sized underpass and belongs to the technical field of traffic engineering. A closed frame structure of the underpass is formed through splicing by adopting the prefabricated segment splicing construction method. Shear keys are arranged on longitudinal splicing surfaces and vertical splicing surfaces respectively. Splicing seams are bonded through structural adhesives. Pressure is formed for vertical splicing by means of self-weight. The vertical splicing seams are provided with connecting steel plates. The connecting steel plates are welded to pre-embedded steel plates of upper segments and lower segments after bonding is completed. Temporary pre-stressing force is set for longitudinal splicing. Large-segment post-tensioning permanent pre-stressing force is longitudinally formed, so that the integrality of each large segment is guaranteed for a long time. Factory-like prefabrication of the prefabricated segments is adopted and carried out in synchronization with excavation of a foundation pit. Thus, certain-scale urban road reconstruction bringing traffic interference seriously influencing production and life in the construction period is carried out smoothly, the construction duration is greatly shortened, the on-site construction progress is promoted, the number of construction procedures of on-site formwork erection, reinforcing steel bar cutting, binding and welding, concrete pouring and the like is substantially reduced, and dust and noise pollution to perimeter zones is reduced.
Bidirectional prefabricated segment splicing construction method for large-sized underpass
The invention discloses a bidirectional prefabricated segment splicing construction method for a large-sized underpass and belongs to the technical field of traffic engineering. A closed frame structure of the underpass is formed through splicing by adopting the prefabricated segment splicing construction method. Shear keys are arranged on longitudinal splicing surfaces and vertical splicing surfaces respectively. Splicing seams are bonded through structural adhesives. Pressure is formed for vertical splicing by means of self-weight. The vertical splicing seams are provided with connecting steel plates. The connecting steel plates are welded to pre-embedded steel plates of upper segments and lower segments after bonding is completed. Temporary pre-stressing force is set for longitudinal splicing. Large-segment post-tensioning permanent pre-stressing force is longitudinally formed, so that the integrality of each large segment is guaranteed for a long time. Factory-like prefabrication of the prefabricated segments is adopted and carried out in synchronization with excavation of a foundation pit. Thus, certain-scale urban road reconstruction bringing traffic interference seriously influencing production and life in the construction period is carried out smoothly, the construction duration is greatly shortened, the on-site construction progress is promoted, the number of construction procedures of on-site formwork erection, reinforcing steel bar cutting, binding and welding, concrete pouring and the like is substantially reduced, and dust and noise pollution to perimeter zones is reduced.
Bidirectional prefabricated segment splicing construction method for large-sized underpass
FU ZHONGLONG (Autor:in) / GAO QINGFENG (Autor:in) / WU JUNJIE (Autor:in) / HUANG GUOSU (Autor:in) / HE XI (Autor:in)
28.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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