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Horizontal pulling type pedestrian suspension bridge of hyperbolic paraboloid space cross cable net

A hyperbolic paraboloid, flat-pull technology, used in suspension bridges, bridges, bridge construction, etc., can solve the problem of large left-right sway, poor lateral stiffness and torsional stiffness, and poor structural space integrity of flat-pull pedestrian suspension bridges. and other problems, to achieve the effect of improving the wind resistance stability, improving the rigidity of the structure space, and avoiding swaying.

Active Publication Date: 2021-11-09
JIANGSU SINOROAD ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional flat-stayed suspension bridge usually adopts a parallel steel wire cable structure system. Therefore, the integrity of its structural space is not strong, and its lateral stiffness and torsional stiffness are poor. Its wind stability is insufficient

Method used

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  • Horizontal pulling type pedestrian suspension bridge of hyperbolic paraboloid space cross cable net
  • Horizontal pulling type pedestrian suspension bridge of hyperbolic paraboloid space cross cable net
  • Horizontal pulling type pedestrian suspension bridge of hyperbolic paraboloid space cross cable net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 9 The flat-stayed pedestrian suspension bridge with hyperbolic parabolic space intersecting cable nets shown includes double limb column bridge tower 1, hyperbolic parabolic space intersecting cable net system 2, back stay cables 3, anchorage 4 and bridge deck structure system 5, Its features are: the double-leg column bridge tower 1 is composed of a double-leg column frame 11 and a parabolic concave cover beam 12, and the parabolic concave cover beam 12 rests on the double-limb column frame 11; the hyperbolic paraboloid space cross cable network system 2 is composed of Several steel wire cables intersect in space, and its spatial configuration is a notch upward cable net formed by the hyperbolic parabolic space intersecting cable net. On the beam 12; one end of the backstay cable 3 is divided into left and right strands and anchored in the anchorage 4, and the other end of the backstay cable 3 is scattered and anchored on the parabolic conca...

Embodiment 2

[0046] A kind of construction method of the horizontal pull type pedestrian suspension bridge of hyperbolic paraboloid space intersecting cable net of the present invention, comprises the following steps:

[0047] Step 1: According to the geological topography and landform conditions, select the bridge site of the flat-drawn pedestrian suspension bridge in the canyon scenic area, build the approach bridge, construct the bridge tower foundation and anchorage 4, install and construct the double-leg column frame 11 and the parabolic concave cover beam 12 on site , forming the double-leg column bridge tower 1, and carrying out the installation and construction of the backstay cable 3;

[0048] Step 2: According to the hyperbolic paraboloid mathematical equation, the hyperbolic paraboloid space cable net is arranged crosswise to form a hyperbolic paraboloid space intersecting cable network system 2;

[0049] Step 3: at a certain distance, lay out parabolic curved steel structure be...

Embodiment 3

[0054] A pedestrian landscape suspension bridge in a canyon scenic area has a main span of 120m, a bridge deck width of 6m, and a bridge deck elevation of 20m. Technical scheme of flat-stayed pedestrian suspension bridge.

[0055] The double limb column bridge tower 1 is composed of the double limb column frame 11 and the parabolic concave cover beam 12. The parabolic concave cover beam 12 rests on the double limb column frame 11. Circular concrete-filled steel pipe column, the wall thickness of the steel pipe is 14mm, and C60 concrete is poured into the pipe. Two beams are set for the double-leg column. The beam is a circular steel pipe concrete beam with a diameter of 500mm. 12m, with a height of 3m, a rectangular concrete-filled steel pipe beam with a height of 1.0m and a width of 0.7 is used. The wall thickness of the steel pipe is 14mm, and C60 concrete is poured into the pipe.

[0056] The hyperbolic paraboloid space intersecting cable net system 2 is composed of severa...

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Abstract

A horizontal pulling type pedestrian suspension bridge of a hyperbolic paraboloid space crossed cable net is characterized in that a hyperbolic paraboloid space crossed cable net system is formed by spatially crossing a plurality of steel wire cables, and the spatial configuration of the hyperbolic paraboloid space crossed cable net is a cable net with an upward notch formed by drooping of the hyperbolic paraboloid space crossed cable net; the double-limb column bridge tower is composed of a double-limb column frame and a parabola concave cover beam, the hyperbolic paraboloid space cross cable net system is hung on the parabola concave cover beam of the double-limb column bridge tower, and the back inhaul cable is divided into a left strand and a right strand to be anchored in the anchorage. The bridge deck structure system in the form of a pipe truss structure is placed in a groove of the hyperbolic paraboloid space crossed cable net system. The hyperbolic paraboloid space cross cable net is arranged in an inclined cross mode, the inclined cross cables can provide horizontal component force, lateral stiffness and torsional stiffness are improved, the horizontal pulling type suspension bridge is prevented from swinging and shaking by a large margin left and right, wind resistance stability is improved, and the hyperbolic paraboloid space cross cable net has the advantages of being simple and light in structure, thin and smooth in shape and fresh and elegant in aesthetic feeling.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a construction technology of a flat-stayed pedestrian suspension bridge, in particular to a flat-stayed pedestrian suspension bridge with hyperbolic paraboloid space intersecting cable nets. Background technique [0002] With the development of the times, there are more and more pedestrian suspension bridges in the canyon scenic area, and the tourist traffic in the canyon scenic area is more convenient. The structure of the flat-stayed pedestrian suspension bridge does not need slings, and its deck structure is directly laid on the main cable suspension. The vertical-span ratio of the flat-stayed suspension bridge is usually 1 / 40 to 1 / 25. [0003] The flat-stayed suspension bridge has the advantages of fast construction speed, low investment, and reusable assembly of components. It is widely used in military combat readiness, water conservancy, transportation, municipal and mining ...

Claims

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Application Information

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IPC IPC(8): E01D11/02E01D19/14E01D21/00
CPCE01D11/02E01D19/14E01D21/00
Inventor 邵慧君吴建伟徐辉张志祥
Owner JIANGSU SINOROAD ENG TECH RES INST CO LTD
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