RU2843880C1 - Bridge structure with support elements remote from the superstructure (versions) - Google Patents

Abstract

FIELD: construction of bridges.

SUBSTANCE: bridge structure with support elements taken away from superstructure is made hanging. Span structure is supported by means of cables attached to opposite support elements made in the form of pylons. Transverse beams of the span are taken out of the span. Cables with their other end are fixed at the ends of the transverse beams with an anchor fixture. Support elements-pylons can be arranged in pairs on opposite sides of adjacent territory, and the span structure itself is located at an angle relative to the river bed, or the support elements-pylons can be arranged in pairs, wherein one pylon of the first pair is located in the river bed, and the second pylon is on the adjacent territory.

EFFECT: possibility of bypassing under-bridge obstacles and preservation of location of utilities and structures in the construction zone.

2 cl, 5 dwg

Description

The proposed invention relates to bridge construction and can be used in bridges both with a direct crossing of an obstacle and with crossing an obstacle at an angle, for example a river.

Bridge structures are usually built across obstacles, such as rivers, roads, and other structures. Supports are usually installed under bridge structures, or erected above them, in the case of cable-stayed and suspension bridges. At the same time, in modern bridge construction, there are cases of installing supports far outside the bridge plan, since the under-bridge space is occupied by communications or other easements. Such a support device is usually ensured by using extended beams. This is how multi-tiered overpasses, bridges with supports in inconvenient places along the purchased bank, and other similar situations are designed.

Similar bridge structures include almost all ring overpasses designed in cramped urban environments or with purchased plots of land in summer cottage areas near megacities, etc.

This situation leads to an increase in the length of the support beam, and at the same time there is a need to develop a thickness reinforcement system, which affects the architecture of the structure, as well as the timing and final cost.

The closest to the proposed solution is the Russian Federation patent for utility model No. 42538 “BRIDGE”.

The utility model relates to bridge construction and can be used in bridges with an oblique crossing of an obstacle, such as a river, railway or highway, etc. The bridge includes abutments (bank supports), intermediate supports and a span structure. The bridge is equipped in the middle part with additional supports located outside the obstacle clearance, on which a transverse beam rests, which is built into the span structure of the bridge. The transverse beam has end sections resting on the adjacent territory of the obstacle, and an arched ceiling located centrally relative to the additional supports, forming a pedestrian bridge together with the end sections.

Disclosure of invention

The objective of the proposed solution is to create a bridge structure with supporting elements extended from the span structure with a support system that will ensure the ability to bypass obstacles.

The technical result of the proposed solution is: ensuring the possibility of bypassing underbridge obstacles and maintaining the location of communications and structures located in the construction zone, as well as ensuring the possibility of saving construction materials.

The technical result is achieved due to the fact that the bridge structure with supporting elements extended from the span structure is made suspended. The span structure is supported by cables attached to the opposite supporting elements made in the form of pylons. The transverse beams of the span structure are extended beyond the span structure. The cables, with their second end, are fixed to the ends of the transverse beams with an anchor fastening. The supporting elements-pylons (according to option 1) are located in pairs on opposite sides of the adjacent territory, and the span structure itself is located across the river bed. The supporting elements-pylons (according to option 2) are located in pairs on opposite sides of the adjacent territory, and the span structure itself is located at an angle relative to the river bed. The supporting elements-pylons (according to option 3) are located in pairs, with one pylon of the first pair located in the riverbed, and the second pylon in the adjacent territory, while in the second pair of pylons the arrangement is reversed.

The essence of the invention is explained by drawings, where:

Fig. 1. – Shows a cross-section of the span structure with extended support elements-pylons.

Fig. 2 – Shows the longitudinal facade of the span structure with extended supporting elements-pylons.

Fig. 3. – Shows a top view of a span structure with extended support elements-pylons, located across the riverbed (option 1).

Fig. 4. – Shows a top view of a span structure located at an angle to the riverbed, with extended support elements-pylons located on the adjacent territory (option 2).

Fig. 5. – Depicts a top view of a span structure located at an angle to the riverbed, with extended support elements-pylons located both in the adjacent territory and in the riverbed. (option 3).

To implement the proposed bridge structure 1 with supporting elements 3 extended from the span structure 2, the bridge structure 1 includes shore supports 4, a span structure 2, cross beams 5 extended beyond the span structure 2, supporting elements-pylons 3 and cables 6.

The bridge structure 1 is made cable-stayed (suspension), the span structure 2 of which is supported by cables 6, fixed to supporting elements - pylons 3 and cross beams 5.

The length of the cross beams 5 is calculated taking into account the width of the obstacle and the size of the underbridge structures that must be bypassed during construction. And taking into account the length of the cross beams 5, the location of the installation of the supporting elements-pylons 3 is calculated. The cables 6 are fixed in their upper part to the supporting elements-pylons 3, and in their lower part to the ends of the corresponding extended cross beams 5. With such an arrangement of the supporting elements-pylons 3 and the cross beams 5, it is possible to bypass any obstacles. In this case, the distances between the paired supporting elements-pylons 3 of each pair can be different, depending on the underbridge obstacles. The supporting elements-pylons 3 can also be located differently.

According to variants 1 and 2, for example, the supporting elements-pylons 3 are located in pairs on opposite sides of the adjacent territory 8.

According to variant 3, for example, the supporting elements-pylons 3 are located: one supporting element-pylon 3 of the first pair is located in the riverbed, and the second is located in the adjacent territory 8, while in the second pair of supporting elements-pylons 3 the arrangement can be reversed.

Also, the span structure 2 itself can be located, for example, across the river bed (according to option 1), or at an angle to the bed (according to options 2 and 3).

The proposed solution has undeniable advantages, namely:

- no need to allocate a land plot due to the lengthening of the cross beams and, accordingly, convenient placement of the support elements;

- the total weight of the bridge structure is reduced due to the fact that there is no need to install additional supports;

- there is no need to reorganize under-bridge traffic and move communications due to the fact that the construction or reconstruction of the bridge structure takes place in places that have no economic significance;

- there is space left for organizing, for example, sidewalk areas on extended cross beams;

- free access to the span structure from below is ensured when organizing, for example, repair work;

- architectural solutions for suspension, cable-stayed bridge structures have a positive effect on the overall architecture of the city.

Industrial applicability

All of the above indicates the completion of the task and the achievement of the technical result, as well as the industrial applicability of the proposed method.

List of positions:

1. Bridge construction

2. Span structure

3. Remote supporting elements-pylons

4. Coastal supports

5. Cross beams

6. Shrouds

7. Anchor fastening

8. Adjacent territory

Claims (6)

1. A bridge structure with supporting elements extended from the superstructure, including shore supports, a superstructure and cross beams, characterized in that the bridge structure is made as a suspension structure, where some ends of the cables are attached to opposite supporting elements made in the form of pylons, and the others are secured with anchor fastenings at the ends of the cross beams, while the ends of the cross beams are extended beyond the span structure, located at an angle relative to the river bed, and the pylons are located in pairs on opposite sides of the adjacent territory. 2. A bridge structure with supporting elements extended from the superstructure, including shore supports, a superstructure and cross beams, characterized in that the bridge structure is made as a suspension structure, where one end of the cables is attached to the opposite supporting elements made in the form of pylons, and the other ends are secured with anchor fastenings at the ends of the cross beams, while the ends of the cross beams are extended beyond the span structure, located at an angle relative to the river bed, while the pylons are located in pairs, and one of the pylons of the first and second pairs is located in the river bed, and the second - in the adjacent territory.