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A platform for research: civil engineering, architecture and urbanism
UHPC continuous box girder bridge with pier top UHPC-NC composite structure and construction method of UHPC continuous box girder bridge
The invention provides a pier top UHPC-NC composite structure UHPC continuous box girder bridge which comprises a UHPC-NC composite box girder section, a UHPC box girder section and a prestress system adopting whole external prestress or partial external prestress in the longitudinal direction, and the UHPC-NC composite box girder section comprises a UHPC bottom plate of a prefabricated structure and a cast-in-place structure NC box girder supported on the UHPC bottom plate. The UHPC-NC combined box girder section is located in the pier top area of the support, the length of the UHPC-NC combined box girder section ranges from 4 m to 12 m, and the UHPC box girder section is located in the area except the UHPC-NC combined box girder section. According to the UHPC continuous box girder bridge of the pier top UHPC-NC composite structure, the UHPC-NC composite structure is adopted at the pier top, the UHPC box girder structure is adopted in other areas, the structure is simple, the self weight is light, the economical efficiency is good, main span downwarping and girder body cracking can be effectively restrained, meanwhile, prefabricated construction is facilitated, and the spanning capacity of the concrete girder bridge is improved.
本发明提供一种墩顶UHPC‑NC组合结构UHPC连续箱梁桥，包括UHPC‑NC组合箱梁节段、UHPC箱梁节段、以及在纵向采用全体外预应力或部分体外预应力的预应力体系，所述UHPC‑NC组合箱梁节段包括预制结构的UHPC底板和支撑于所述UHPC底板的现浇结构NC箱梁，所述UHPC‑NC组合箱梁节段位于支座墩顶区域，其长度为4～12米，所述UHPC箱梁节段位于除UHPC‑NC组合箱梁节段以外的区域。本发明提供的墩顶UHPC‑NC组合结构UHPC连续箱梁桥，在墩顶采用UHPC‑NC组合结构，其余区域采用UHPC箱梁结构，结构简单、自重较轻、经济性好，能有效遏制主跨下挠和梁体开裂，同时又便于装配化施工和增加混凝土梁桥的跨越能力。
UHPC continuous box girder bridge with pier top UHPC-NC composite structure and construction method of UHPC continuous box girder bridge
The invention provides a pier top UHPC-NC composite structure UHPC continuous box girder bridge which comprises a UHPC-NC composite box girder section, a UHPC box girder section and a prestress system adopting whole external prestress or partial external prestress in the longitudinal direction, and the UHPC-NC composite box girder section comprises a UHPC bottom plate of a prefabricated structure and a cast-in-place structure NC box girder supported on the UHPC bottom plate. The UHPC-NC combined box girder section is located in the pier top area of the support, the length of the UHPC-NC combined box girder section ranges from 4 m to 12 m, and the UHPC box girder section is located in the area except the UHPC-NC combined box girder section. According to the UHPC continuous box girder bridge of the pier top UHPC-NC composite structure, the UHPC-NC composite structure is adopted at the pier top, the UHPC box girder structure is adopted in other areas, the structure is simple, the self weight is light, the economical efficiency is good, main span downwarping and girder body cracking can be effectively restrained, meanwhile, prefabricated construction is facilitated, and the spanning capacity of the concrete girder bridge is improved.
本发明提供一种墩顶UHPC‑NC组合结构UHPC连续箱梁桥，包括UHPC‑NC组合箱梁节段、UHPC箱梁节段、以及在纵向采用全体外预应力或部分体外预应力的预应力体系，所述UHPC‑NC组合箱梁节段包括预制结构的UHPC底板和支撑于所述UHPC底板的现浇结构NC箱梁，所述UHPC‑NC组合箱梁节段位于支座墩顶区域，其长度为4～12米，所述UHPC箱梁节段位于除UHPC‑NC组合箱梁节段以外的区域。本发明提供的墩顶UHPC‑NC组合结构UHPC连续箱梁桥，在墩顶采用UHPC‑NC组合结构，其余区域采用UHPC箱梁结构，结构简单、自重较轻、经济性好，能有效遏制主跨下挠和梁体开裂，同时又便于装配化施工和增加混凝土梁桥的跨越能力。
UHPC continuous box girder bridge with pier top UHPC-NC composite structure and construction method of UHPC continuous box girder bridge
一种墩顶UHPC-NC组合结构UHPC连续箱梁桥及其施工方法
ZHAO HUA (author) / LUO SUI (author) / TAN CHENGJUN (author) / SUN TAO (author) / LUO ZIHAO (author) / TU LEI (author) / SHAO XUDONG (author)
2022-11-04
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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