A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flexible beam dense cable hybrid beam extradosed cable-stayed bridge
The invention discloses a flexible beam dense cable hybrid beam extradosed cable-stayed bridge which comprises a cable bent tower, stay cables, a main beam and pier columns, the main beam is connected with the middle of the cable bent tower and the top ends of the pier columns, the upper ends of the stay cables are intensively anchored to the tower top of the cable bent tower, and the lower ends of the stay cables are anchored to the main beam in the longitudinal direction without cable areas; the height of the section of the main beam is 1/300-1/100 of the span of the main span; the main beam is a mixed beam with a main span being a steel box beam and a side span being a concrete box beam. The stay cable is anchored on the tower top in a centralized mode, the inclination angle of the stay cable is increased, the use efficiency of the stay cable is improved, and structural stress and structural earthquake resistance are facilitated; by adopting the dense on-beam cable pitch and the small main beam height, the structural weight is reduced, the structural rigidity is reduced, the stress performance and the anti-seismic property are excellent, the method is suitable for a large-span bridge with the limited tower height in a high-intensity area, and the engineering cost can be remarkably reduced. The main beam is a hybrid beam, rigidity distribution is reasonable, ballasting is avoided, the scale of a main bridge is controlled, and engineering cost is saved.
本发明公开了一种柔梁密索混合梁矮塔斜拉桥，包括索塔、斜拉索、主梁和墩柱，主梁与索塔中部、墩柱顶端连接，斜拉索上端集中锚固于索塔塔顶，下端锚固于主梁上沿其纵向布置，且不设置无索区；主梁截面高度为主跨跨径1/300～1/100；主梁采用主跨为钢箱梁、边跨为混凝土箱梁的混合梁。本发明斜拉索在塔顶集中锚固，增大拉索的倾角，提高拉索使用效率，有利于结构受力和结构抗震；本发明通过采取较密的梁上索距，较小的主梁高度，减轻结构重量，降低结构刚度，具备较优的受力性能和抗震性能，适用于高烈度地区塔高受限制的大跨径桥梁，且能显著降低工程造价。本发明主梁采用混合梁，刚度分配合理,避免压重，控制主桥规模，节约工程造价。
Flexible beam dense cable hybrid beam extradosed cable-stayed bridge
The invention discloses a flexible beam dense cable hybrid beam extradosed cable-stayed bridge which comprises a cable bent tower, stay cables, a main beam and pier columns, the main beam is connected with the middle of the cable bent tower and the top ends of the pier columns, the upper ends of the stay cables are intensively anchored to the tower top of the cable bent tower, and the lower ends of the stay cables are anchored to the main beam in the longitudinal direction without cable areas; the height of the section of the main beam is 1/300-1/100 of the span of the main span; the main beam is a mixed beam with a main span being a steel box beam and a side span being a concrete box beam. The stay cable is anchored on the tower top in a centralized mode, the inclination angle of the stay cable is increased, the use efficiency of the stay cable is improved, and structural stress and structural earthquake resistance are facilitated; by adopting the dense on-beam cable pitch and the small main beam height, the structural weight is reduced, the structural rigidity is reduced, the stress performance and the anti-seismic property are excellent, the method is suitable for a large-span bridge with the limited tower height in a high-intensity area, and the engineering cost can be remarkably reduced. The main beam is a hybrid beam, rigidity distribution is reasonable, ballasting is avoided, the scale of a main bridge is controlled, and engineering cost is saved.
本发明公开了一种柔梁密索混合梁矮塔斜拉桥，包括索塔、斜拉索、主梁和墩柱，主梁与索塔中部、墩柱顶端连接，斜拉索上端集中锚固于索塔塔顶，下端锚固于主梁上沿其纵向布置，且不设置无索区；主梁截面高度为主跨跨径1/300～1/100；主梁采用主跨为钢箱梁、边跨为混凝土箱梁的混合梁。本发明斜拉索在塔顶集中锚固，增大拉索的倾角，提高拉索使用效率，有利于结构受力和结构抗震；本发明通过采取较密的梁上索距，较小的主梁高度，减轻结构重量，降低结构刚度，具备较优的受力性能和抗震性能，适用于高烈度地区塔高受限制的大跨径桥梁，且能显著降低工程造价。本发明主梁采用混合梁，刚度分配合理,避免压重，控制主桥规模，节约工程造价。
Flexible beam dense cable hybrid beam extradosed cable-stayed bridge
一种柔梁密索混合梁矮塔斜拉桥
WANG LEI (author) / LIANG LINONG (author) / YANG ZUAN (author) / LUO HUOSHENG (author) / QIU SHEN (author) / HAN JINBAO (author) / LUO XIA (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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