A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Durable super-large-span double-tower suspension bridge cable system fire-resistant structure
The invention relates to a durable super-large-span double-tower suspension bridge cable system fire-resistant structure which comprises a fire-resistant main cable and fire-resistant slings, a plurality of cable clamps are arranged on the fire-resistant main cable at intervals in the length direction, the fire-resistant slings are arranged between the cable clamps and a steel box girder, and sling anchorage devices are arranged at the upper end and the lower end of each fire-resistant sling respectively. The sling anchorage device at the upper end is connected with a sling clamp, and the sling anchorage device at the lower end is connected with a steel box girder; the fire-resistant main cable comprises a main cable body, the periphery of the main cable body is wound with an S-shaped steel wire, the periphery of the S-shaped steel wire is wrapped with an anti-corrosion sheath, and the periphery of the anti-corrosion sheath is provided with a main cable outer layer fire-resistant sheath; and the fire-resistant sling comprises a steel wire bundle, a polyester fiber belt is wound on the periphery of the steel wire bundle, and a high-density polyethylene layer and a sling fire-resistant sheath are sequentially arranged on the outer layer of the polyester fiber belt from inside to outside. According to the invention, the line type and the cable force of the main cable and the sling are not greatly changed in a fire, and the overall safety of a cable system is ensured.
本发明涉及一种耐久性超大跨双塔悬索桥缆索系统抗火结构，包括抗火主缆和抗火吊索，所述抗火主缆沿长度方向间隔布置若干索夹，若干所述索夹与钢箱梁之间设有抗火吊索，所述抗火吊索上下两端分别设置吊索锚具，上端所述吊索锚具与索夹连接，下端所述吊索锚具与钢箱梁连接；所述抗火主缆包括主缆本体，所述主缆本体外周缠设S型钢丝，所述S型钢丝外周包裹防腐护套，所述防腐护套外周设置主缆外层抗火护套；抗火吊索包括钢丝束，所述钢丝束外周缠设聚酯纤维带，所述聚酯纤维带外层自内向外依次设有高密度聚乙烯层和吊索抗火护套。本申请保证了主缆、吊索在火灾中线型和索力不发生较大变化，保证缆索体系的整体安全。
Durable super-large-span double-tower suspension bridge cable system fire-resistant structure
The invention relates to a durable super-large-span double-tower suspension bridge cable system fire-resistant structure which comprises a fire-resistant main cable and fire-resistant slings, a plurality of cable clamps are arranged on the fire-resistant main cable at intervals in the length direction, the fire-resistant slings are arranged between the cable clamps and a steel box girder, and sling anchorage devices are arranged at the upper end and the lower end of each fire-resistant sling respectively. The sling anchorage device at the upper end is connected with a sling clamp, and the sling anchorage device at the lower end is connected with a steel box girder; the fire-resistant main cable comprises a main cable body, the periphery of the main cable body is wound with an S-shaped steel wire, the periphery of the S-shaped steel wire is wrapped with an anti-corrosion sheath, and the periphery of the anti-corrosion sheath is provided with a main cable outer layer fire-resistant sheath; and the fire-resistant sling comprises a steel wire bundle, a polyester fiber belt is wound on the periphery of the steel wire bundle, and a high-density polyethylene layer and a sling fire-resistant sheath are sequentially arranged on the outer layer of the polyester fiber belt from inside to outside. According to the invention, the line type and the cable force of the main cable and the sling are not greatly changed in a fire, and the overall safety of a cable system is ensured.
本发明涉及一种耐久性超大跨双塔悬索桥缆索系统抗火结构，包括抗火主缆和抗火吊索，所述抗火主缆沿长度方向间隔布置若干索夹，若干所述索夹与钢箱梁之间设有抗火吊索，所述抗火吊索上下两端分别设置吊索锚具，上端所述吊索锚具与索夹连接，下端所述吊索锚具与钢箱梁连接；所述抗火主缆包括主缆本体，所述主缆本体外周缠设S型钢丝，所述S型钢丝外周包裹防腐护套，所述防腐护套外周设置主缆外层抗火护套；抗火吊索包括钢丝束，所述钢丝束外周缠设聚酯纤维带，所述聚酯纤维带外层自内向外依次设有高密度聚乙烯层和吊索抗火护套。本申请保证了主缆、吊索在火灾中线型和索力不发生较大变化，保证缆索体系的整体安全。
Durable super-large-span double-tower suspension bridge cable system fire-resistant structure
一种耐久性超大跨双塔悬索桥缆索系统抗火结构
ZHAO JUN (author) / XUE HUAJUAN (author) / QIANG QIANG (author)
2021-07-27
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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