CN210658017U

CN210658017U - Support arrangement for steel strand wires construction

Info

Publication number: CN210658017U
Application number: CN201920881492.8U
Authority: CN
Inventors: 雷玲香; 刘文浩; 李玉梅
Original assignee: Guangdong No 2 Hydropower Engineering Co Ltd
Current assignee: Guangdong No 2 Hydropower Engineering Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-06-02
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a strutting arrangement of steel strand wires construction, it includes support and location pulley, the location pulley includes at least one top sheave and at least one lower pulley, top sheave and lower pulley are all installed on the support through the fixed plate, form the passageway that can hold steel strand wires to pass between top sheave and the lower pulley. The utility model discloses a single strand of steel strand wires is pulled out from the one end hunch foot of bridge, and the steel strand wires is pulled to the other end hunch foot department of bridge again after passing between upper pulley and the lower pulley, and upper pulley and lower pulley support and fix a position steel strand wires jointly, and at the in-process of pulling steel strand wires, upper pulley and lower pulley rotate thereupon. The utility model discloses prevented that the steel strand wires are direct to drag and the damage that leads to on the ground, avoided the self that multi beam steel strand wires appear at the in-process that drags to twist reverse and intertwine simultaneously, the practicality is strong, the engineering of being convenient for promote.

Description

Support arrangement for steel strand wires construction

Technical Field

The utility model relates to a strutting arrangement among the bridge construction field, especially a strutting arrangement of steel strand wires construction.

Background

The arch bridge is one of the basic bridge types of modern bridge structures due to the characteristics of beautiful appearance, reasonable stress, mature construction process and the like. The arch bridge can generate larger horizontal thrust under the action of vertical loads such as dead weight, live load and the like. Arch bridges can be divided into end-bearing arch bridges and tied-arch bridges according to different measures for resisting thrust. The end-bearing arch bridge is supported by horizontal thrust through embedding large-volume concrete at two ends of the arch bridge, namely, at arch feet or supporting the arch feet to positions such as a stable mountain and the like. The tied arch bridge forms a self-balancing system with an arch bridge main body by connecting steel strand tied bars at two ends (or arch feet) of the arch bridge to balance huge horizontal thrust generated by a main arch under the bearing of permanent load and variable load. The tied arch bridge has the characteristics of simple arch springing treatment, strong bridge spanning capability, strong field adaptability, high lower foundation economy and attractive appearance, and is rapidly developed and widely applied since the 90 s of the 20 th century. In the structural system of the tied arch bridge, the tie bars bear most of the horizontal thrust of the main span and are one of the most important stressed components of the tied arch bridge, so the erection precision of the tie bars plays a decisive role in the overall safety of the arch bridge. The tied arch bridge built in 2000 years later generally adopts a replaceable tied bar structure formed by matching a steel stranded wire finished product bundle with a replaceable cable anchor, has the characteristics of reliable anchoring, convenience in replacing tied bars in the later period and the like, and meanwhile, the steel stranded wire finished product bundle is manufactured by a manufacturer in a unified way by adopting various anticorrosion measures, so that the finished tied arch bridge has better anticorrosion performance.

The length of the tie bar of the large-span tied arch bridge is consistent with the span of the bridge and exceeds 100 m. The number of the tied-rod steel stranded wires is large and generally exceeds 30. Therefore, in the process of erecting and installing the tie bars, the extra-long steel strands inevitably have the phenomena of self torsion, mutual winding, mutual lap joint and the like, and bring great troubles to bridge construction. Therefore, a positioning device which can effectively separate the bundles of steel strands and realize smooth sliding of the steel strands is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a strutting arrangement of steel strand wires construction, it can support the steel strand wires to avoid entangling each other, the overlap joint between the steel strand wires.

The utility model provides a solution of its technical problem is: the utility model provides a strutting arrangement of steel strand wires construction, its includes support and location pulley, the location pulley includes at least one top sheave and at least one bottom sheave, top sheave and bottom sheave are all installed on the support through the fixed plate, form the passageway that can hold steel strand wires to pass between top sheave and the bottom sheave.

As a further improvement of the technical scheme, the fixing plate comprises two clamping plates, and the positioning pulleys are arranged between the two clamping plates.

As a further improvement of the above technical solution, the number of the upper pulleys is one, the number of the lower pulleys is two, and the upper pulleys and the lower pulleys are distributed on the fixing plate in a triangular shape.

As a further improvement of the technical scheme, the upper pulley and the lower pulley are distributed in a regular triangle shape, and the two clamping plates are regular triangle-shaped plates.

As a further improvement of the technical scheme, the positioning pulleys are equal in size, the diameter of each positioning pulley is 350-450 mm, and the center distance between every two adjacent positioning pulleys is 500-700 mm.

As a further improvement of the technical scheme, the upper pulley and the lower pulley are respectively installed between the two clamping plates through detachable connecting pieces.

As a further improvement of the technical scheme, the circumferential side surfaces of the positioning pulleys are provided with circular grooves.

As a further improvement of the technical proposal, the top plate of the bracket is welded with the lower part of the fixed plate.

The utility model has the advantages that: the utility model discloses a single strand of steel strand wires is pulled out from the one end hunch foot of bridge, and the steel strand wires is pulled to the other end hunch foot department of bridge again after passing between upper pulley and the lower pulley, and upper pulley and lower pulley support and fix a position steel strand wires jointly, and at the in-process of pulling steel strand wires, upper pulley and lower pulley rotate thereupon. The utility model discloses prevented that the steel strand wires are direct to drag and the damage that leads to on the ground, avoided the self that multi beam steel strand wires appear at the in-process that drags to twist reverse and intertwine simultaneously, the practicality is strong, the engineering of being convenient for promote.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention (not shown).

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions.

Referring to fig. 1 to 2, the supporting device for steel strand construction comprises a support 4, at least one upper pulley 1 and at least one lower pulley 2, wherein the upper pulley 1 and the lower pulley 2 are both mounted on the support 4 through a fixing plate 3, and a channel capable of allowing a steel strand to pass through is formed between the upper pulley 1 and the lower pulley 2. The fixed plate 3 comprises two clamping plates 31, and the upper pulley 1 and the lower pulley 2 are both arranged between the two clamping plates 31. The single-bundle steel strand is pulled out from one end of the arch bridge, the steel strand extends between the two clamping plates 31, and the steel strand extends out of the fixing plate 3 after passing through a channel between the upper pulley 1 and the lower pulley 2 and then is pulled to a proper position. Along with the pulling of the steel strand, the upper pulley 1 and the lower pulley 2 rotate, so that the sliding friction between the steel strand and the ground is avoided, and the pulling of the steel strand is more labor-saving.

Further, as a preferred embodiment, the number of the upper pulleys 1 is one, the number of the lower pulleys 2 is two, and the upper pulleys 1 and the lower pulleys 2 are distributed on the fixing plate 3 in a triangular shape. The upper pulley 1 and the lower pulley 2 are distributed in a regular triangle shape, and the two clamping plates 31 are both regular triangle-shaped plates. The size of positioning pulley equals, positioning pulley's diameter is 350 ~ 450mm, and the centre-to-centre spacing between two adjacent positioning pulley is 500 ~ 700 mm. Preferably, the clamping plates 31 are all equilateral triangular steel plates with the side length of 2000mm, and the corner points of the clamping plates 31 are rounded by 20 mm. The diameters of the upper pulley 1 and the lower pulley 2 are both 400mm, the thickness is 20mm, and the distance between the two clamping plates 31 is more than 20mm so as to ensure that the positioning pulleys have enough rotating space. The circle center distance between adjacent positioning pulleys is 600 mm. The sizes of the three positioning pulleys and the distances among the three positioning pulleys are tested by calculation and engineering application, so that the accurate positioning of the steel strand can be realized, and the stable sliding of the steel strand when the steel strand passes through and is dragged is also realized.

Further as a preferred embodiment, the upper pulley 1 and the lower pulley 2 are respectively mounted between the two clamping plates 31 through detachable connectors. Preferably, all be equipped with the diameter and be 20 mm's round hole on the centre of a circle of positioning pulley and splint 31, fix positioning pulley between two splint 31 through detachable bolt or rivet, simultaneously for guaranteeing that positioning pulley can free rotation and be convenient for the dismouting, the effective diameter of connecting piece is 16 ~ 18 mm. Lubricating oil is coated in the round hole of the positioning pulley.

Further as a preferred embodiment, the circumferential side faces of the positioning pulleys are provided with circular grooves. The diameter of the circular groove is 20mm, and lubricating oil is coated on the circular groove.

Further preferably, a top plate of the bracket 4 is welded to a lower portion of the fixing plate 3. Before construction, a support 4 is built in the middle part below the bridge through section steel according to the position and the height of the tie bar; or one bracket 4 is built at a position which is about one third of the length of the bridge from the arch springing at one end under the bridge, and correspondingly, another bracket 4 is built at a position which is about one third of the length of the bridge from the arch springing at the other end, namely two brackets 4. The fixing plate 3 is vertically welded on the bracket 4.

The utility model discloses a use method:

A. two brackets 4 are erected under the bridge according to the positions and heights of the tie bars, and the fixing plates 3 are welded to the brackets 4, respectively.

B. And respectively installing positioning pulleys on the fixed plate 3 and coating lubricating oil on corresponding positions.

C. And (3) passing a bundle of tie rod steel stranded wires through the upper pulley 1 and the lower pulley 2 in one supporting device, and continuously drawing the steel stranded wires to the next supporting device until reaching the arch springing at the other end of the bridge.

D. All the upper pulleys 1 are removed, the steel strands are detached from the supporting means and the bundle is tensioned until it is approximately horizontal.

E. And the upper pulley 1 is reinstalled so as to facilitate the traction and the support of the next bundle of steel strands.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a strutting arrangement of steel strand wires construction which characterized in that: including support (4) and positioning pulley, positioning pulley includes at least one top sheave (1) and at least one bottom sheave (2), top sheave (1) and bottom sheave (2) are all installed on support (4) through fixed plate (3), form the passageway that can hold the steel strand wires to pass between top sheave (1) and bottom sheave (2).

2. The support device for steel strand construction according to claim 1, wherein: the fixed plate (3) comprises two clamping plates (31), and the positioning pulleys are installed between the two clamping plates (31).

3. The support device for steel strand construction according to claim 2, wherein: the number of the upper pulleys (1) is one, the number of the lower pulleys (2) is two, and the upper pulleys (1) and the lower pulleys (2) are distributed on the fixing plate (3) in a triangular shape.

4. The support device for steel strand construction according to claim 3, wherein: the upper pulley (1) and the lower pulley (2) are distributed in a regular triangle shape, and the two clamping plates (31) are regular triangle-shaped plates.

5. The support device for steel strand construction according to claim 4, wherein: the size of positioning pulley equals, positioning pulley's diameter is 350 ~ 450mm, and the centre-to-centre spacing between two adjacent positioning pulley is 500 ~ 700 mm.

6. The support device for steel strand construction according to claim 2, wherein: the upper pulley (1) and the lower pulley (2) are respectively installed between the two clamping plates (31) through detachable connecting pieces.

7. The support device for steel strand construction according to claim 1, wherein: and circular grooves are formed in the circumferential side surfaces of the positioning pulleys.

8. The support device for steel strand construction according to claim 1, wherein: the top plate of the bracket (4) is welded with the lower part of the fixing plate (3).