A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge structure for underneath passing of existing road through reverse construction and construction method
The invention provides a bridge structure for underneath passing of an existing road in reverse construction and a construction method. The structure comprises a cast-in-place beam body, a body-free bridge abutment, a foundation platform, a bridge abutment pile foundation, a pile front hanging plate, a pile pier with a steel casing, a protective steel sheet pile, an abutment back reinforcing jet grouting pile, an abutment front reinforcing jet grouting pile and an abutment back butt strap. The structure is advantaged in that due to the fact that underneath flyovers are built on expressways andbusy urban roads, a deep foundation pit affects the road traffic and safety of surrounding buildings, when existing roads cannot be completely sealed or buildings around the roads are dense, influence on passing of existing roads and influence on existing buildings are required to reduce, the constructed deep foundation pit needs to be protected in quantity, problems that the construction risk isincreased and investment is increased are solved, the busy urban roads or expressways do not need to be completely closed during underneath pass bridge construction, half-width traffic is met, foundation pits are reduced, excavation protection is reduced, the protection difficulty is reduced, the construction risk is reduced, investment is saved, the safety risk of the passing roads and surrounding buildings is reduced, and underneath pass road construction safety is improved.
本发明提供一种逆向施工下穿既有道路的桥梁结构及施工方法，包括现浇梁体、无身桥台、基础承台、桥台桩基、桩前挂板、带钢护筒的桩柱桥墩、防护钢板桩、台后加固旋喷桩、台前加固旋喷桩、台后搭板，解决了在高速公路、繁忙的城市道路修建下穿立交桥，基坑较深影响道路通行和周边建筑物安全，当无法完全封闭既有道路或道路周边建筑密集时，减少对既有道路通行影响和减少对既有建筑的影响，施工的深基坑需进行大量防护，增加施工风险、加大投资的问题，让繁忙的城市道路或高速公路在施工下穿桥时不用完全封闭，满足半幅通车，减小基坑，减小开挖防护，降低防护难度，降低施工风险，节约投资，降低通行道路和周边建筑的安全风险，提高下穿道路施工安全性。
Bridge structure for underneath passing of existing road through reverse construction and construction method
The invention provides a bridge structure for underneath passing of an existing road in reverse construction and a construction method. The structure comprises a cast-in-place beam body, a body-free bridge abutment, a foundation platform, a bridge abutment pile foundation, a pile front hanging plate, a pile pier with a steel casing, a protective steel sheet pile, an abutment back reinforcing jet grouting pile, an abutment front reinforcing jet grouting pile and an abutment back butt strap. The structure is advantaged in that due to the fact that underneath flyovers are built on expressways andbusy urban roads, a deep foundation pit affects the road traffic and safety of surrounding buildings, when existing roads cannot be completely sealed or buildings around the roads are dense, influence on passing of existing roads and influence on existing buildings are required to reduce, the constructed deep foundation pit needs to be protected in quantity, problems that the construction risk isincreased and investment is increased are solved, the busy urban roads or expressways do not need to be completely closed during underneath pass bridge construction, half-width traffic is met, foundation pits are reduced, excavation protection is reduced, the protection difficulty is reduced, the construction risk is reduced, investment is saved, the safety risk of the passing roads and surrounding buildings is reduced, and underneath pass road construction safety is improved.
本发明提供一种逆向施工下穿既有道路的桥梁结构及施工方法，包括现浇梁体、无身桥台、基础承台、桥台桩基、桩前挂板、带钢护筒的桩柱桥墩、防护钢板桩、台后加固旋喷桩、台前加固旋喷桩、台后搭板，解决了在高速公路、繁忙的城市道路修建下穿立交桥，基坑较深影响道路通行和周边建筑物安全，当无法完全封闭既有道路或道路周边建筑密集时，减少对既有道路通行影响和减少对既有建筑的影响，施工的深基坑需进行大量防护，增加施工风险、加大投资的问题，让繁忙的城市道路或高速公路在施工下穿桥时不用完全封闭，满足半幅通车，减小基坑，减小开挖防护，降低防护难度，降低施工风险，节约投资，降低通行道路和周边建筑的安全风险，提高下穿道路施工安全性。
Bridge structure for underneath passing of existing road through reverse construction and construction method
逆向施工下穿既有道路的桥梁结构及施工方法
LI CHUANLIN (author) / CHE WENQING (author) / ZHANG DUNBAO (author) / YAO ZHIGUO (author) / GAO HONGHUI (author) / ZOU YI (author) / ZHAO WEI (author) / JIANG YONGLIAN (author) / LI HONGBO (author) / FAN ZEFEI (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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