The manufacturer of the bridge bearing supplier will introduce some knowledge about bridge expansion joints to you

The manufacturer of the bridge bearing supplier will introduce some knowledge about bridge expansion joints to you

The types of bridge expansion joints are divided into:

Modular expansion joints, filled expansion joints, comb expansion joints, rubber expansion joints and non-woven expansion joints. There are two kinds of expansion joint materials, one is Q235 profiled steel expansion joint, the other is 16Mn profiled steel expansion joint; Modular expansion joint is a new type of lightweight expansion joint product, which is widely used in highway construction. This kind of expansion joint is made of integrally formed special-shaped steel and consists of side beam, center beam, cross beam, displacement control system, sealing rubber belt and other components. The comb-shaped expansion joint surface plate is a comb-shaped anti-slip groove steel plate, which is a supporting structure that meshes with each other from the left and right sides of the bridge deck gap. The structural rigidity is large, and it can withstand large horizontal displacement, and the expansion amount can reach 420mm. Seamless expansion joints are applicable to all periods of the year. Generally, the bridge deck will not become brittle at minus 40 ℃ and will not flow when the high temperature reaches 80 ℃ in summer. It can be used not only in the south where the temperature difference is small, but also in the northwest and northeast where the temperature difference is large.

Introduction to expansion joints

The building expansion joint, namely the expansion joint, refers to a construction joint set at an appropriate position along the direction of the construction joint of the building or structure in order to prevent the structure from cracking or damage due to the climate and temperature changes (thermal expansion and cold contraction). The expansion joint is to divide the building components above the foundation, such as wall, floor, roof (except wooden roof), into two independent parts, so that the building or structure can be horizontally expanded along the long direction.

The types of expansion joints are bridge expansion joints GQF-C, GQF-Z, GQF-E, GQF-F and GQF-MZL, all of which are bridge expansion joint products designed with hot-rolled integrally formed profiled steel. Among them, GQF-C, GQF-Z, GQF-L and GQF-F bridge expansion devices are applicable to bridges with expansion capacity of less than 80mm. GQF-MZL bridge expansion device is a modular bridge expansion joint device composed of side beam, center beam, cross beam and linkage mechanism, which is applicable to large and medium-sized span bridges with expansion capacity of 80mm-1200mm.

The above is the main knowledge about bridge expansion joints summarized by the manufacturer of bridge bearing supplier. If you want to know more about bridge expansion joints, please call the company hotline at any time for consultation.