CN203834339U - Simple arch bridge - Google Patents

Abstract

The utility model relates to a simple arc bridge. Because the arch crown of a three-hinged arch is provided with hinges, the three-hinged arch has turning points when deforming and is disadvantageous to high-speed running; besides, because the structure of the crown hinges is complex, maintenance is inconvenient. Thus, the three-hinged arch is only suitable for steel arch bridges with a small span. The simple arc bridge comprises a supporting arch frame (1). A main support (2) is connected to the highest point of the supporting arch frame, and two auxiliary supports (3) support the supporting arch frame and are symmetrically arranged on the two sides of the main support. The top of the supporting arch frame is connected with an arched bridge floor (4), a guardrail (5) is arranged on the bridge floor, and the auxiliary supports are connected with the arched bridge floor. The simple arc bridge is used for road traffic.

Description

simple arch bridge

Technical field:

The utility model relates to a simple arch bridge.

Background technique:

Most of the arch bridges adopt the form of double-hinge arches of the upper-supported or middle-supported type. The hingeless arch must have a solid foundation, so its application range is limited. The three-hinge arch has hinges on the top of the arch, and there is a turning point when it deforms, which is not good for high-speed driving, and the structure of the top hinge is complicated and inconvenient to maintain, so it is only used for steel arch bridges with small spans. The arch ribs of steel arch bridges can generally be made in the shape of truss, box or plate girder, which are called truss arch, box arch and plate arch respectively. Arch bridges are divided into: arc arch bridge: an arch bridge in which the axis of the arch circle is set according to a partial arc line. The advantage is that the structure is simple, the stone specifications are the least, and the material preparation, lofting, and construction are very simple; the disadvantage is that the pressure line in the arch deviates from the axis of the arch when it is loaded, and the force is uneven. It is generally applicable to stone arch bridges with a span of less than 20m. Parabolic arch bridge: an arch bridge with the axis of the arch circle set along a parabola, which is a special case of catenary arch bridge. The advantage is that the bending moment is small, the material is saved, and the spanning capacity is large; the disadvantage is that the structure is more complicated. If it is a stone arch bridge, the specifications of the stone are more, and the construction is more inconvenient. Catenary arch bridge: an arch bridge in which the axis of the arch circle is set according to the catenary line. The advantage is that the force is uniform, the bending moment is not large, and the material is saved. It is mostly suitable for solid-web arch bridges, and this linear arrangement is often used in long-span hollow arch bridges.

Utility model content:

The purpose of the utility model is to provide a simple arch bridge.

The purpose of this utility model is achieved in that:

A simple arch bridge, which consists of: a supporting arch, connected to the highest point of the supporting arch with a main support, supporting the supporting arch with two auxiliary supports, and the two auxiliary supports Seats are symmetrically arranged on both sides of the main support, the top of the supporting arch is connected to the arch bridge deck, the bridge deck is provided with guardrails, and the auxiliary support is connected to the arch bridge deck. face connection.

In the simple arch bridge, in the main support and the auxiliary support, two parallel support beams are connected by a set of horizontal frames, and the horizontal frames are reinforced by fixing devices.

In the simple arch bridge, the supporting arch, the main support, and the auxiliary support are steel structures.

Beneficial effect:

1. It can fully obtain local materials, which can save a lot of steel and cement compared with beam bridges.

Good durability, less maintenance and repair costs, and beautiful appearance.

The structure is relatively simple, especially for masonry arch bridges, and the technology is easy to master, which is conducive to widespread adoption.

Description of drawings:

Accompanying drawing 1 is a structural representation of the utility model.

Accompanying drawing 2 is the structural representation of the support frame of the present utility model.

Accompanying drawing 3 is the structural representation of the main support of the utility model.

Accompanying drawing 4 is the structural representation of the sub-support of the utility model.

Detailed ways:

Example 1:

A kind of simple arch bridge, its composition comprises: supporting arch 1, connects at the highest point of described supporting arch with main support 2, supports described supporting arch with two auxiliary supports 3, two described supporting arches The sub-supports are symmetrically arranged on both sides of the main support, the top of the supporting arch is connected with the arched bridge deck 4, the bridge deck is provided with guardrails 5, and the sub-supports are connected with the arched bridge deck 4. The arched bridge deck connection described above.

Example 2:

According to the simple arch bridge described in Embodiment 1, in the main support and the auxiliary support, two parallel support beams 8 are connected by a set of horizontal frames 6, and there is a fixing device between the horizontal frames. 7 reinforcement.

Example 3:

According to the simple arch bridge described in Embodiment 1, the supporting arch, the main support, and the auxiliary support are steel structures.

Claims (1)

1. a kind of simple and easy arch bridge, its composition comprises: scaffold, it is characterized in that: the peak that is connected to described scaffold with main bearing, with the scaffold described in two secondary seat supports, secondary bearing described in two is symmetricly set on described main bearing both sides, the top of described scaffold is connected with arch bridge floor, described bridge floor is provided with guardrail, described secondary bearing is connected with described arch bridge floor, in described main bearing and described secondary bearing, two parallel brace summers connect by one group of dry crossbearer, between described crossbearer, there is fastening devices to reinforce, described scaffold and described main bearing, described secondary bearing is steel design.