CN215563394U

CN215563394U - Symmetrical multi-stay-cable intersection upper node of large-span cable-stayed structure

Info

Publication number: CN215563394U
Application number: CN202120919538.8U
Authority: CN
Inventors: 丁祝红; 张涛; 阮林旺; 闵籽涵; 丁亚茹; 赫明月
Original assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Current assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-01-18
Anticipated expiration: 2031-04-29

Abstract

The utility model relates to a symmetrical multi-stay-cable intersection upper node of a large-span cable-stayed structure, which comprises two groups of ear plates which are symmetrically arranged, wherein each group of ear plate comprises a plurality of ear plates which are arranged in parallel, one ends of the two groups of ear plates are respectively fixedly connected with a steel column, and the other ends of the two groups of ear plates are respectively movably connected with a plurality of stay cables. Compared with the prior art, the utility model can provide enough bearing capacity under the complex stress condition of multi-guy cable intersection, can control the node to have smaller volume and attractive appearance, and is convenient for construction installation and subsequent adjustment.

Description

Symmetrical multi-stay-cable intersection upper node of large-span cable-stayed structure

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a symmetrical multi-stay-cable intersection upper node of a large-span cable-stayed structure.

Background

In recent years, with the rapid development of the building design industry in China, the application of the cable-stayed structure is increasingly wide, the realization of the cable-stayed structure is very important in the design and technology of matched nodes, and the advantages and disadvantages of the node design have great influence on the overall safety of the structure, the construction cost and the building effect.

At present, most of conventional cable-stayed structures adopt cable node forms such as an anchor box type, an anchor pipe type, a pull anchor type and a single lug plate type, the node is difficult to meet the requirements of small size, good shape, large bearing capacity, convenience in maintenance in construction, installation and subsequent use and the like, and particularly under the condition of multi-cable intersection, the problems are very obvious due to complex stress conditions.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a symmetrical multi-stay-cable intersection upper node of a large-span cable-stayed structure, so that enough bearing capacity can be provided under the complex stress condition of multi-stay-cable intersection, and meanwhile, construction and installation and later-period adjustment and maintenance are facilitated.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a many guys of symmetry formula of large-span cable-stay structure upper portion node that crosses, including two sets of otic placodes that the symmetry set up, every a set of otic placode all includes a plurality of parallel arrangement's otic placode, the one end of two sets of otic placodes respectively with steel column fixed connection, the other end of two sets of otic placodes respectively with a plurality of cable swing joint.

Furthermore, the ear plate is specifically of a right-angle trapezoidal structure, the bevel edge of the right-angle trapezoidal structure is connected with the upper bottom in an arc manner, and the bevel edge of the right-angle trapezoidal structure is connected with the lower bottom in an arc manner.

Furthermore, the ear plate is movably connected with the inhaul cable through a pin shaft.

Furthermore, a plurality of pin shaft holes used for connecting the inhaul cable are formed in the ear plate.

Furthermore, two sides of the ear plate are provided with ear plate attaching plates.

Furthermore, the ear plate flitch is located the round pin shaft hole both sides.

Furthermore, horizontal inner baffles are arranged in the steel column in an up-down opposite mode, vertical longitudinal inner baffles are connected between the horizontal inner baffles, and one ends of the lug plates are inserted into the steel column and connected with the longitudinal inner baffles.

Further, an inner ring plate is arranged on the inner wall of the steel column.

Further, the inner ring plate is positioned between the two horizontal inner partition plates.

Furthermore, a pouring hole for pouring concrete is formed in the horizontal inner partition plate.

Compared with the prior art, the utility model has the advantages that two groups of mutually symmetrical lug plates are arranged, a plurality of lug plates which are arranged in parallel are arranged in each group of lug plates, one end of each group of lug plates is fixedly connected with the steel column, and the other end of each group of lug plates is movably connected with a plurality of inhaul cables, so that the bearing capacity of the junction upper node is effectively improved, and the construction, installation and later maintenance are convenient;

the lug plate is of a right-angle trapezoidal structure based on force flow design, and the connection between the inclined edge of the right-angle trapezoidal structure and the upper bottom and the lower bottom is set to be circular arc connection, so that compared with the traditional lug plate with a semicircular and rectangular combined structure, the stress uniformity of the node under the condition of multi-stay-cable intersection can be ensured, the phenomenon of stress concentration and damage can be avoided, the node size can be reduced, and the attractive appearance of the node can be improved;

the lug plate attaching plates are arranged on the two sides of the lug plate pin shaft hole, so that the bearing capacity of the node is further enhanced, and in addition, the horizontal inner partition plate and the inner ring plate are arranged in the steel column, so that the connection between the steel column and the lug plates is enhanced; set up the irrigation hole on the horizontal inner baffle in the steel column to realize concreting reinforcing node whole bending strength in the steel column, to sum up and realize the steadiness of whole node structure.

Drawings

FIG. 1 is a schematic top sectional view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1;

the notation in the figure is: 1. the cable comprises a stay cable, 2 parts of a steel column, 3 parts of an ear plate, 4 parts of an ear plate flitch, 5 parts of a pin shaft, 6 parts of an inner ring plate, 71 parts of a horizontal inner partition plate, 72 parts of a longitudinal inner partition plate, 8 parts of a pouring hole.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments.

Examples

As shown in fig. 1 and fig. 2, where fig. 1 is a B-B section structure diagram of fig. 2, a symmetric multi-cable intersection upper node of a large-span cable-stayed structure includes two sets of ear plates symmetrically arranged in left and right directions, each set of ear plate includes a plurality of ear plates 3 arranged in parallel, in this embodiment, each set of ear plate is provided with three ear plates, one end of each set of ear plate is respectively fixedly connected with a steel column 2 (for example, fixedly connected by welding), and the other end of each set of ear plate is respectively movably connected with a plurality of cables 1.

Wherein, otic placode 3 specifically is the right trapezoid structure, is the circular arc between the hypotenuse of right trapezoid structure and the upper base to be connected, is the circular arc between the hypotenuse of right trapezoid structure and the lower base to be connected. The otic placode 3 is through selling 5 and cable 1 swing joint of axle, has seted up a plurality of round pin shaft holes that are used for connecting cable 1 on the otic placode 3, and the both sides in every round pin shaft hole all are provided with otic placode flitch 4.

In addition, horizontal inner baffles 71 which are arranged oppositely up and down are arranged in the steel column 2, pouring holes 8 for pouring concrete are formed in the horizontal inner baffles 71, vertical longitudinal inner baffles 72 are connected between the horizontal inner baffles 71, and one ends of the ear plates 3 are inserted into the steel column 2 and connected with the longitudinal inner baffles 72;

an inner ring plate 6 is arranged on the inner wall of the steel column 2, and the inner ring plate 6 is positioned between the two horizontal inner partition plates 71.

In the embodiment, the technical scheme of the utility model is applied to realize a symmetrical multi-stay-cable intersection upper node which comprises two groups (three groups) of ear plates, ear plate attaching plates, inner partition plates, inner ring plates, pin shafts and a steel column, wherein the three ear plates in each group of ear plates are all placed in parallel, one ends of the ear plates are provided with a plurality of pin shaft holes, the pin shafts are installed in the pin shaft holes, so that a stay cable is connected with the ear plates through the pin shafts, the ear plate attaching plates are positioned on two sides of the pin shaft holes, the other ends of the ear plates are inserted into the steel column and are symmetrically connected with the longitudinal inner partition plates, the steel column is also internally provided with the horizontal inner partition plates and the inner ring plates to strengthen the connection between the steel column and the ear plates, and the horizontal inner partition plates are provided with pouring holes, so that concrete can be poured in the steel column to enhance the integral bending strength of the node.

According to the technical scheme, the bearing capacity of the node is enhanced through the combined action of the multiple lug plates and the lug plate flitch on the symmetrical multi-stay-cable intersection upper node of the large-span cable-stayed structure, the node volume is controlled, the right-angle trapezoidal structure lug plate is designed through the fine design based on force flow, the inclined edge of the right-angle trapezoidal structure is connected with the upper bottom and the lower bottom through circular arcs, the node stress is guaranteed to be even, the node can be symmetrical, the appearance is attractive, and the cable anchoring mode of the lug plate pin shaft combination is convenient to construct, install and maintain.

Claims

1. The utility model provides a many guys of symmetry formula of large-span cable-stay structure upper portion node that crosses, its characterized in that, including two sets of otic placodes (3) that the symmetry set up, every otic placode (3) of a set of all include a plurality of parallel arrangement's otic placode (3), the one end of two sets of otic placodes (3) respectively with steel column (2) fixed connection, the other end of two sets of otic placodes (3) respectively with a plurality of guys (1) swing joint.

2. The symmetrical multi-stay-cable intersection upper node of the large-span cable-stayed structure according to claim 1, wherein the ear plate (3) is a right-angle trapezoid structure, the inclined side of the right-angle trapezoid structure is connected with the upper bottom through an arc, and the inclined side of the right-angle trapezoid structure is connected with the lower bottom through an arc.

3. The symmetrical multi-cable intersection upper node of the large-span cable-stayed structure according to claim 1, characterized in that the ear plate (3) is movably connected with the cable (1) through a pin shaft (5).

4. The symmetrical multi-cable intersection upper node of the large-span cable-stayed structure according to claim 3, wherein a plurality of pin shaft holes for connecting the cables (1) are formed in the ear plates (3).

5. The symmetrical multi-stay-cable intersection upper node of the large-span cable-stayed structure according to claim 4, characterized in that two sides of the ear plates (3) are provided with ear plate attachment plates (4).

6. The symmetrical multi-stay-cable-crossing upper node of a large-span cable-stayed structure according to claim 5, wherein the lug plate attachment plates (4) are positioned at both sides of the pin shaft hole.

7. The symmetrical multi-stay-cable intersection upper node of the large-span cable-stayed structure according to claim 1, characterized in that horizontal inner baffles (71) are arranged in the steel column (2) in an up-down opposite manner, vertical longitudinal inner baffles (72) are connected between the horizontal inner baffles (71), and one end of the ear plate (3) is inserted into the steel column (2) and connected with the longitudinal inner baffles (72).

8. The symmetrical multi-stay-cable intersection upper node of the large-span cable-stayed structure according to claim 7, characterized in that an inner ring plate (6) is arranged on the inner wall of the steel column (2).

9. The symmetrical multi-stay cable junction upper node of a large-span cable-stayed structure according to claim 8, characterized in that the inner ring plate (6) is positioned between two horizontal inner partition plates (71).

10. The symmetrical multi-stay-cable junction upper node of the large-span cable-stayed structure according to claim 7, wherein a pouring hole (8) for pouring concrete is formed in the horizontal inner partition plate (71).