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Modular steel form-concrete composite arch bridge and its suspension cable suspension construction method

A construction method and concrete technology, applied in the field of bridge construction, to achieve the effect of low production cost, precise geometric dimensions, and convenient suspension hoisting

Inactive Publication Date: 2016-08-31
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies and defects existing in the existing bridge construction technology in mountainous areas and deep valleys, and proposes a modular steel form-concrete composite arch bridge and its suspension cable suspension construction method. The modular steel formwork unit can be modularized in the factory. Inexpensive to make and easy to transport

Method used

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  • Modular steel form-concrete composite arch bridge and its suspension cable suspension construction method
  • Modular steel form-concrete composite arch bridge and its suspension cable suspension construction method
  • Modular steel form-concrete composite arch bridge and its suspension cable suspension construction method

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Embodiment 1

[0061] The application environment of this embodiment is a small pedestrian bridge in a mountainous area, with a clear span of 30m and a vertical height of 5m. The design load is a pedestrian load of 3.5kPa. The composite arch bridge of this embodiment includes: a modular composite arch ring 1 with cast-in-situ concrete 14 and vertical columns 3 , bridge deck girders and bridge decks 2 arranged thereon.

[0062] The modular composite arch ring 1 is specifically composed of five assembled steel arches 7, and each assembled steel arch 7 includes seven modular steel mold units 5 fixedly connected in the arc length direction.

[0063] The steel mold unit 5 is formed by mechanical stamping, bending and welding (riveting), and includes: a bottom plate 10, side plates 8 on both sides of the bottom plate and multiple vertical transverse partitions 9 perpendicular to the axis of the arch.

[0064] The section along the length direction of the bottom plate 10 is an arc surface, and the...

Embodiment 2

[0086] The application environment of this embodiment is a medium-sized arch bridge on a mountain road, with a clear span of 50m and a rise-span ratio of 1 / 6. The design load is road-II class. Using a method similar to that of Example 1, the full width of the bridge deck after construction in this example is 12m. The main arch ring is a catenary arch without hinges of equal cross-section, and the thickness of the arch ring is 0.8m. There are 8 main arch rings, each 15m wide, and each arch ring is composed of 15 steel mold units.

Embodiment 3

[0088]The application environment of this embodiment is a large arch bridge on a highway in a mountainous area, with a clear span of 112m and a rise-span ratio of 1 / 5.3. The design load is road-II class. Using a method similar to that of Example 1, the full width of the bridge deck after construction in this example is 20m, the main arch ring is a variable-section catenary without hinge arch, the section thickness of the vault top is 0.8m, and the section thickness of the arch foot is 1.5m. It adopts the form of steel mold-concrete composite arch. There are 10 main arch rings, each 2m wide, and each arch ring is composed of 30 steel mold units.

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Abstract

The invention provides a modularized steel die and concrete combined arch bridge and a suspending construction method of a suspension cable thereof in the technical field of bridge building. The modularized steel die and concrete combined arch bridge comprises a combined arch ring with cast-in-place concrete, and vertical stand columns, a bridge deck beam and a bridge deck plate which are arranged on the combined arch ring, wherein the modularized combined arch ring is formed from one or multiple split mounting type steel arches, and each split mounting type steel arch comprises a plurality of modularized steel die units which are fixedly connected in the arc length direction. Modularized production of the steel die units can be carried out in a factory, and the manufacturing cost is low and the transport is convenient. The modularized steel die and concrete combined arch bridge is excellent in integral performance; due to the adoption of the steel die units, a large quantity of templates used when a traditional concrete pouring construction method is adopted are no longer needed, and manpower waste caused by disassembly after the completion of the arc bridge is also avoided; requirements for the combined arch ring with a larger span and a higher construction rigidity can be met, and the requirements for different spans and rigidities as well as construction stability can be met.

Description

technical field [0001] The invention relates to a method in the technical field of bridge construction, in particular to a modular steel formwork-concrete composite arch bridge and a suspension cable suspension construction method thereof. Background technique [0002] Some remote areas in the southwest and northwest of China are surrounded by mountains and steep valleys, and the transportation is extremely inconvenient, which seriously restricts the development of the local economy. Due to limited conditions, the only way to solve travel problems in such remote areas is to hang steel ziplines above the turbulence in deep valleys and fix them between the mountains as a means of transportation. For example, on April 11, 2012, the article "The Villa Blocked by the Canyon" reported by China Central Television's "Focus on Sannong" program introduced the Xuandongzi Grand Canyon, which is hundreds of meters deep in Yingpan Township, Shuicheng County, Guizhou Province. The two mou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D4/00E01D21/00
CPCE01D4/00E01D21/00E01D2101/268
Inventor 王增春
Owner SHANGHAI JIAO TONG UNIV
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