Unlock instant, AI-driven research and patent intelligence for your innovation.

A double-tower self-anchored cable-stayed-suspension system bridge

A self-anchored, stay-cable technology, applied in construction and other directions, can solve the problems of restricted operation, heavy bridge towers, and small internal space, and achieve the effect of optimizing structural force, avoiding stress concentration, and improving stability.

Inactive Publication Date: 2017-11-24
CHANGAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this system avoids the problems of traditional self-anchored suspension bridge anchors, it has the following disadvantages: ① It does not have the ability to actively adjust: the main span of the bridge tower is anchored by sub-cables, its back is anchored by stay cables, and the cables on both sides are anchored The devices are back to back, and the internal space is very narrow, which makes the internal adjustment space limited; when there is an error in the cable installation, the operation space in the tower will limit the operation, affecting the construction progress and the alignment of the bridge
②Multiple cables are anchored on both sides of the bridge tower, and the local force is complicated, which is not conducive to design and calculation, and the more complicated design will cause the bridge tower to be bulky and affect the overall beauty of the bridge; ③The bridge is fixed due to loose cable points and cables For the fixation of the anchor point, the adjustment of the cable can only be limited to the degree of multiple tensioning of the cable. A single adjustment method is also a disadvantage of construction safety; The matching also directly affects the force of the whole bridge, and if there is a large construction deviation, it will affect the performance of the bridge

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A double-tower self-anchored cable-stayed-suspension system bridge
  • A double-tower self-anchored cable-stayed-suspension system bridge
  • A double-tower self-anchored cable-stayed-suspension system bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Comply with the above technical solutions, such as Figure 1 to Figure 4 As shown, the present embodiment provides a double-tower self-anchored cable-stayed-suspension system bridge, including a pair of bridge towers 1, a main span girder 2 between a pair of bridge towers 1, a pair of bridge towers 1 two Both sides are the side-span main girder 3, the main-span main girder 2 is hoisted on the main-span main cable 5 by the main-span sling 4, and the side-span main girder 3 is suspended and hoisted by the side-span stay cable 6;

[0057] Described main span main cable 5 and side span stay cable 6 are a whole cable, and bridge tower 1 top is equipped with integral main cable saddle 7, and main span main cable 5 passes through integral main cable saddle 7 and turns cable and The scatter cable is a multi-strand side-span stay cable 6;

[0058] The integral main cable saddle 7 includes a saddle 7-1, and three cable grooves are processed side by side on the back of the saddle...

Embodiment 2

[0066] Comply with the above technical solutions, such as Figure 1 to Figure 4 As shown, this embodiment provides a double-tower self-anchored cable-stayed-suspension system bridge, the main structure is the same as that of Embodiment 1, the only difference is that in this embodiment:

[0067] The relationship between the arc radius of the middle section cable groove 7-3 and the arc radius of the far section cable groove 7-2 is:

[0068]

[0069] The relationship between the arc radius of the near section cable groove 7-4 and the arc radius of the far section cable groove 7-2 is:

[0070]

[0071] In the formula:

[0072] R 1 is the arc radius of the bottom shape line of the cable groove at the far section, R 2 is the arc radius of the bottom shape line of the cable groove in the middle section, R 3 is the arc radius of the bottom shape line of the cable groove in the near section;

[0073] θ 1 is the angle between the bottom cable and the horizontal plane when th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a double-tower self-anchored cable-stayed-suspension system bridge. Each integral main cable saddle comprises a saddle base, wherein three cable grooves are machined in the back of the saddle base side by side, the far-segment cable groove is in the middle, and the middle-segment cable groove and the near-segment cable groove are in the two sides of the far-segment cable groove; the bottom of the far-segment cable groove, the bottom of the middle-segment cable groove and the bottom of the near-segment cable groove are in circular arc shapes, the three circle centers of the three circular arcs are located on the same straight line, and the straight line where the three circle centers are located is an intersection line of the end surface of the cable inlet end of the saddle base and the vertical plane; the projections of the end points, located on the end surface of the cable inlet end, of the three circular arcs inside the vertical plane are overlapped; the circular arc radius of the far-segment cable groove is larger than that of the middle-segment cable groove; and the circular arc radius of the middle-segment cable groove is larger than that of the near-segment cable groove. The integral asymmetric design is adopted; the cable rotating function and the cable scattering function are combined; all the paths are not overlapped and arranged spatially and are circular arc lines; and the tangent slope of the curves and the pulling cable slope are consistent when cables come out of the main cable saddles.

Description

technical field [0001] The invention belongs to the field of bridges, and relates to a main cable saddle structure, in particular to a double-tower self-anchored cable-stayed-suspension system bridge. Background technique [0002] Traditional self-anchored suspension bridges anchor the main cables to anchors at the ends of the girders. On the one hand, because the main cables are scattered at the beam end area behind the scatter saddle, limited by the main girder, the spreading space is limited, and the degree of dispersion of anchorage positions is much smaller than that of ground-anchored suspension bridges, resulting in a large local force on the anchorage, and the anchorage Down stress is quite complex. On the other hand, since the main cable needs a lot of space to scatter, the volume of the anchor at the beam end needs to be increased a lot, which has a great impact on the appearance. [0003] In recent years, there has been a suspension bridge system in which the ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E01D11/00
CPCE01D11/00
Inventor 王晓明雷晓鸣段瑞芳杨辉东孙天张郁烽蔡羽蔡京洋
Owner CHANGAN UNIV