CN-122013696-A - Wide temperature range adaptive sound barrier steel frame and sound barrier system

CN122013696ACN 122013696 ACN122013696 ACN 122013696ACN-122013696-A

Abstract

The invention discloses a wide-temperature-range adaptive sound barrier steel frame and a sound barrier system, and relates to the technical field of sound barriers. The connecting structure is divided into a strong connecting structure, a longitudinal displacement self-adaptive connecting mechanism and a conventional connecting structure, and the strength of the strong connecting structure is larger than that of the conventional connecting structure. All arch-shaped columns positioned between adjacent bridge expansion joints form a steel frame unit, and each unit is divided into two end sections and a middle section in length. Adjacent columns in the end sections are fixed by a strong connection structure, while the middle section is connected by a conventional structure. The adjacent steel frame units are connected through a longitudinal displacement self-adaptive connecting mechanism, and the mechanism can automatically adjust the effective length to adapt to the width change of the expansion joint, allow the units to generate relative longitudinal displacement and simultaneously maintain the connection state. The design fundamentally solves the problems of stress concentration and fatigue failure.

Inventors

SUN BOYU
SU CONGCONG
YANG MAN
YANG KAIYUAN
LIU KUO

Assignees

西藏中驰集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. The wide-temperature-range adaptive sound barrier steel frame is characterized in that the connecting structure is divided into three types, namely a strong connecting structure, a longitudinal displacement adaptive connecting mechanism and a conventional connecting structure, the connecting strength of the strong connecting structure is higher than that of the conventional connecting structure, all the arch-shaped columns on a bridge section between two adjacent bridge expansion joints form a steel frame unit, the length direction of each steel frame unit comprises two end sections and a middle section positioned between the two end sections, and the adjacent arch-shaped columns positioned in the same end section are fixedly connected through the strong connecting structure; The effective connection length of the longitudinal displacement self-adaptive connection mechanism can be automatically adjusted in response to the width change of the expansion joint so as to allow the relative longitudinal displacement between the adjacent steel frame stabilizing units and maintain the connection state.
2. The wide temperature range adaptive sound barrier steel frame according to claim 1, wherein the strong connection structure comprises transverse purlines, inter-column supports and horizontal supports, the inter-column supports are cross channel steel supports arranged on the sides of the arched upright posts, the horizontal supports are cross channel steel supports arranged on the tops of the arched upright posts, the transverse purlines are arranged in the horizontal direction, and two ends of the transverse purlines are respectively connected to the two arched upright posts.
3. The wide temperature range adaptive sound barrier steel frame according to claim 2, wherein the inter-column supports are provided with a plurality of groups, the vertical dimension of which is 2m, and the horizontal supports are provided with a plurality of groups, the dimension of which along the width direction of the bridge is 1m.
4. The wide temperature range adaptive sound barrier steel frame according to claim 1, wherein the longitudinal displacement adaptive connecting mechanism comprises a transverse purline, and two ends of the transverse purline are respectively connected with arched upright posts of two adjacent steel frame units through a sliding pair; The sliding pair comprises a slotted hole arranged at the end part of the transverse purline and a bolt penetrating through the slotted hole and fastening the end part with the corresponding arch upright post, the length direction of the slotted hole is parallel to the longitudinal direction of the bridge, and when the adjacent steel frame units generate relative longitudinal displacement due to the width change of the bridge expansion joint, the bolt can slide in the slotted hole so as to realize the longitudinal displacement adaptation between the transverse purline and the arch upright post.
5. The wide temperature range adaptive sound barrier steel frame according to claim 1, wherein the conventional connection structure is a transverse purline, an oblong hole is formed in the end portion of the transverse purline, and the oblong hole and the fastening bolt are matched to connect the transverse purline to the arched upright.
6. The wide temperature range adaptive sound barrier steel frame of claim 1, wherein the arched uprights and each of the connecting structures are fabricated from weather resistant steel.
7. The wide temperature range adaptive sound barrier steel frame of claim 1, wherein the maximum length of the steel frame unit is less than or equal to 120 meters.
8. The wide temperature range adaptive sound barrier steel frame according to claim 1, wherein the surfaces of the arched upright posts and the connecting structure are subjected to corrosion prevention treatment by adopting a hot dip galvanizing process.
9. A sound barrier system comprising the sound barrier steel frame of any one of claims 1-8 and a screen mounted on the arched upright.
10. The sound barrier system of claim 9, wherein the screen is made of an anti-aging composite material.

Description

Wide temperature range adaptive sound barrier steel frame and sound barrier system Technical Field The invention relates to the technical field of sound barriers, in particular to a wide-temperature-range adaptive sound barrier steel frame and a sound barrier system. Background With the rapid development of traffic infrastructure, the totally enclosed sound barrier is widely applied to traffic trunks such as bridges and the like and is used for reducing the influence of traffic noise on the surrounding environment. The sound barrier is usually fixed on the upper part of the bridge through a steel frame structure, and the stability and the safety of the sound barrier are directly influenced by the deformation of the bridge structure. The bridge can take place expend with heat and contract with cold under temperature variation, in order to avoid leading to structural damage because of temperature stress, can set up the expansion joint in certain length interval usually during the bridge design. The traditional sound barrier steel frame mostly adopts a continuous arrangement mode and spans the bridge expansion joint. When the bridge is deformed in a telescopic way due to temperature change, the continuous steel frame can be subjected to larger tension and compression or shearing stress at the expansion joint, so that the steel frame connecting node is easy to fatigue, deform and even destroy, and the overall stability and the service life of the sound barrier are influenced. At present, the technical scheme disclosed in the prior art is not disclosed, and the adaptive structural design is specially carried out on the sound barrier steel frame at the bridge expansion joint so as to systematically solve the problems of steel frame stress concentration and structural safety caused by bridge temperature deformation. Therefore, a sound barrier steel frame structure with a deformation compensation capability, which can adapt to wide temperature range changes, is needed to ensure that the whole stability and safety of the sound barrier steel frame structure can be maintained when the bridge stretches and deforms. Disclosure of Invention The invention aims to provide a wide-temperature-range adaptive sound barrier steel frame and a sound barrier system, which are used for overcoming the defects that the sound barrier steel frame in the prior art cannot adapt to bridge expansion and contraction deformation due to rigid connection with a bridge structure, stress concentration is generated at an expansion joint, fatigue damage is easy to occur to a connecting joint, and the overall safety and the service life are influenced. In order to achieve the above object, the present invention provides the following solutions: The invention provides a wide-temperature-range adaptive sound barrier steel frame, which comprises a plurality of arched upright posts longitudinally arranged along a bridge, wherein any two adjacent arched upright posts are connected with each other through a connecting structure, the connecting structure is divided into three types, namely a strong connecting structure, a longitudinal displacement adaptive connecting mechanism and a conventional connecting structure, the connecting strength of the strong connecting structure is higher than that of the conventional connecting structure, all arched upright posts on a bridge section between two adjacent bridge expansion joints form a steel frame unit, the length direction of each steel frame unit comprises two end sections and a middle section positioned between the two end sections, the adjacent arched upright posts positioned in the same end section are fixedly connected through the strong connecting structure, and the adjacent arched upright posts positioned in the middle section are connected through the conventional connecting structure; The effective connection length of the longitudinal displacement self-adaptive connection mechanism can be automatically adjusted in response to the width change of the expansion joint so as to allow the relative longitudinal displacement between the adjacent steel frame stabilizing units and maintain the connection state. The strong connection structure comprises transverse purlines, inter-column supports and horizontal supports, wherein the inter-column supports are cross channel steel supports arranged on the side parts of the arched upright posts, the horizontal supports are cross channel steel supports arranged on the tops of the arched upright posts, the transverse purlines are arranged along the horizontal direction, and two ends of the transverse purlines are respectively connected to the two arched upright posts. Preferably, the inter-column supports are provided with a plurality of groups, the vertical dimension of the inter-column supports is 2m, and the horizontal supports are provided with a plurality of groups, and the dimension of the inter-column supports along the width direction of the bridge is 1m. Pr