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hinged arch foot

An arch frame and hinged technology, which is applied in the construction field of reinforced concrete arch bridges, can solve problems such as easy damage to the foundation and tension on the rods, and achieve the effects of shortening the construction period, reducing requirements, and wide applicability

Inactive Publication Date: 2011-12-21
DALIAN UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a hinged arch foot of the arch frame to solve the problem that the rods of the arch foot section will have tension and the foundation will be easily damaged; The position of the arch ring, so that the arch can be reused

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Embodiment Construction

[0021] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0022] Design parameters: span 150m, rise-span ratio 1:5, arch axis coefficient 1.756, single-box double-chamber section, section height 2.2m, arch ring width 7.2m, four-span bridge, load class I highway.

[0023] A steel pipe filled with concrete is prefabricated in the factory, and then the number of arch frames determined according to the width of the arch bridge and the corresponding positions are welded with triangular steel plates; the steel pipe is transported to the construction site, and after the abutment is poured, a piece of curved steel plate is installed , apply a layer of oil, and then send the steel pipe into the arc steel plate; then hoist the subsequent arch segment to the span with a cable crane and other lifting equipment to complete the connection between the perforated steel plate and its upper ...

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Abstract

The invention discloses a hinged arch springing of an arch center, belonging to the technical field of reinforced concrete arch bridge construction and relating to the design of a concrete arch bridge construction arch center, in particular to the arch springing design of the arch center. The hinged arch springing design of the arch center is characterized by comprising the steps of: setting the whole arch center to a structure of two hinged arches, welding steel tubes filled with concrete and a triangle steel plate, horizontally putting in an arc-shaped steel plate coated with lubrication oil so as to form an arch springing section and ensure that members and the base of the arch springing section is always in a pressurized state; and in the case of a plurality of bridges, transversely pulling the arch center whole to a next arch ring position by utilizing a lifting jack after the construction of one arch bridge is completed so as to complete the construction of the next arch bridge.The invention has the beneficial effects that: the base is always in the pressurized state to ensure that the requirement for the base is reduced, the applicability is wide and the arch center is safer; in the meantime, in the case of a plurality of bridges, the arch center can be pulled to the next bridge to ensure that the recycling of the arch center is realized, the construction cost is savedand the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of reinforced concrete arch bridge construction, and relates to the design of the construction arch frame of the concrete arch bridge, in particular to the design of the arch foot of the arch frame. Background technique [0002] The construction of reinforced concrete arch bridges with long spans spanning deep valleys and rivers mostly uses arch construction. The arch frame mainly includes: June 4th military beams spliced ​​into arc-shaped construction arch frame; Bailey beams cantilevered into a circular-arc-shaped broken line arch, and then steel pipe supports are erected to adapt to the line shape of the main arch ring; the length of the upper chord The adjustable truss standard sections are spliced ​​into a catenary arch or a parabolic arch; the length-adjustable special lower chord and the military beam standard tripod are combined and spliced ​​into a catenary arch or a parabolic arch. [0003] At pre...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D4/00
Inventor 黄才良张胜林张哲王会利涂莹莹邱文亮檀永刚潘盛山
Owner DALIAN UNIV OF TECH
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