Full description of the implanted bridge deck continuous device

The implantable bridge deck continuous device is a product for bridge structure, also called bridge deck rubber waterstop, which is a kind of waterstop belt, which is applied to the beam bridge and includes rubber made of elastic material. A drainage groove is provided on the back surface of the plate or the middle portion of the rubber plate or near the middle portion, and a water outlet opening communicating with the drainage groove is formed on the rubber plate. The utility model comprises an arch structure, and two sides of the arch structure are provided with mounting faces for connecting with the bridge beam body, and the ribs of the I-beam shape are arranged at a certain distance above the arch structure at a certain distance in the width direction.

The bridge deck continuous device is usually called implanted bridge deck continuous device, ecs device, ECS expansion joint, bridge deck special waterstop, bridge deck rubber waterstop, which is a combination of special performance high elastic material and steel bar. The middle of the molding is a rubber body with steel bars embedded on both sides and a drainage groove on the back. The main components are steel bars, elastic materials/permeable materials, drainage holes, and drain pipes. It is a kind of scorpion that looks like a multi-legged shovel. It is mainly used in the continuous bridge deck of the simply supported bridge. It can be drained and strengthened to extend the service life of the bridge. The common size is 1030*66mm.

The position of the continuous crack in the bridge deck

First, longitudinal reinforcement bars are usually placed at the beam joints during the construction process. Lateral cracks often appear on the asphalt concrete surface at the end of the reinforcing steel bars. The main reason is that the concrete joints on both sides of the section are suddenly interrupted at this position. The strength of the pavement layer is abruptly changed, resulting in stress concentration and prone to cracks.

Secondly, when the beam body is subjected to longitudinal load, the entire beam body and the pavement layer on the outer side of the section participate in the force, while only the concrete pavement layer on the inner side of the section participates in the force, and the effective force area on both sides is abrupt, which is easy to produce. crack.

Third, the width of the beam is too large. Because the construction unit is worried that the beam is too long to make the frame beam difficult during the construction process of the bridge, the design value of the prefabricated beam is designed to be a few centimeters shorter or even more. As a result, the beam joint is too large, and the construction unit has not taken effective reinforcement measures. Only the reinforcing steel bars are arranged at the position of the joints according to the original design, so that the continuous structure of the bridge deck which is originally a weak link is more severely weakened. The design unit is provided with an induced joint on the upper surface of the reinforced concrete pavement above the beam joint, and the crack usually appears directly above the induced joint. During the operation of the bridge, the city's overweight and over-limit vehicles have been repeatedly banned, which has further damaged the continuous seam damage.

The term "planted bridge deck continuous device" is only used for the bridge deck as a simple support structure, that is, the pier top beam plate of the two-span simply supported structure has installation joints, and generally no expansion joint is provided, and the bridge deck pavement is The layer must consider the problem of continuous bridge deck. It is common practice to reinforce the continuous steel reinforcement (6 m long) at a distance of 3 m from the end of the installation beam.

Hengshui Yifeng Technology Co., Ltd. specializes in the production of rubber waterstops, two-component polysulfide sealants, GB flexible fillers, etc. It has rich production experience and technical strength, and has certain influence in the rubber production industry. The rubber products have been applied in many projects in China, and have been fully affirmed by users and many praises!