·Hengshui Kaixiang Rubber Products Co., Ltd. produces and sells bridge expansion joints 1

&Bridge expansion joints: refers to the expansion joints usually set between the two beam ends, between the beam ends and the abutment, or at the hinged position of the bridge in order to meet the requirements of bridge deck deformation. It is required that the expansion joints can be freely expanded and contracted in both directions parallel and perpendicular to the axis of the bridge, and are strong and reliable. When vehicles drive, they should be smooth, without sudden jumps and noises. They should be able to prevent rainwater, garbage and soil from infiltrating and blocking installation, inspection, maintenance and elimination. Dirt should be kept simple and convenient. Where expansion joints are set, the railings and bridge deck pavement must be disconnected. The function of bridge expansion joints is to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. Once the telescopic device of a skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents.
Classification of bridge expansion joints: Bridge expansion joints generally include butt type, steel support type, combined shear type (plate type) modulus support type and elastic device.
Butt type: Butt type expansion joint devices can be divided into two types: filling butt type and embedded butt type according to their different structural forms and stress characteristics. The filling butt-type telescopic device uses materials such as asphalt, wood boards, hemp, rubber, etc. to fill the gaps. The telescopic body is under pressure under any circumstances. This type of telescopic device is generally used in conventional bridge projects with the following telescopic amounts, but is no longer common. The embedded butt joint expansion joint device uses steel members of different shapes to embed and fix rubber strips (belts) of different shapes, and uses the tension and compression deformation of the rubber strips (belts) to absorb the deformation of the beam body. pressure state. It can also be in tension.
Modular support: When the telescopic deformation of the bridge exceeds, steel telescopic devices are often used. When a vehicle passes by, the telescopic device often produces a flapping effect due to the rotation or deflection deformation of the beam end, making a lot of noise and easily damaging the structure. Therefore, a device equipped with bolt springs needs to be used to fix the sliding steel plate to reduce slap and noise. The structure of the expansion joint is relatively complex.
Shearing type: This device is a telescopic device that uses rubber belts of various cross-sectional shapes as filling materials. Because rubber is elastic and easy to stick, it can meet deformation requirements and is waterproof. It has been widely used in bridge projects at home and abroad.
Steel supports: Telescopic devices such as plate-type rubber products are difficult to meet the requirements of large displacements. Steel-type telescopic devices are difficult to seal and watertight, and can easily cause impact on the vehicle and affect the vehicle. travelability. Therefore, various types of modular bearings (modular bearings) that can withstand vehicle loads under large displacement conditions have emerged, using rubber materials with good shock-absorbing and buffering properties and easy sealing, combined with special-shaped steel materials with good strength and high performance. ) Bridge telescopic device series.
Elastomer: The elastomer expansion device is divided into zinc-iron expansion joints and gravel elastic expansion joints. The elastomer expansion device is a simple expansion joint device. For bridges with small and medium spans, when the expansion amount is within A gravel elastic expansion joint device can be used, which heats and melts a special elastic-plastic material and then pours it into the cleaned and heated gravel to form a gravel elastic expansion joint. The gravel is used to support the vehicle load. The elastic-plastic material It can meet the requirements of expansion and contraction under the condition of 1℃~℃.
Bridge expansion joint models: Expansion joints can be divided into: C type, type, type, type according to performance and installation method.
Among them, the number mode bridge expansion joint device is a bridge expansion joint device designed using hot-rolled integrally formed special-shaped steel. C-type, C-type, C-type, and C-type expansion joint devices are suitable for bridge joints below the expansion amount. The C-type expansion joint device is a modular bridge expansion joint device composed of side beams, center beams, cross beams and linkage mechanisms. It is suitable for Large and medium-span bridges with limited expansion capacity.
Highway bridge telescopic devices are divided into: modular bridge telescopic devices and telescopic devices and elastic-plastic telescopic devices
Modular bridge telescopic devices are divided into: C-type bridge telescopic devices, type bridge telescopic devices< br/>
Hengshui Kaixiang Rubber Products Co., Ltd.
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Contact person: Manager Hou< br/> Email: @
Address: Beitian Village, Pengdu Township, Binhu New District, Hengshui, Hebei Province