Modulus formula telescoping device and bridge that can multidirectionally shift

The utility model provides a modulus formula telescoping device and bridge that can multidirectionally shift, the telescoping device is including two boundary beams that are located the expansion joint both sides, two boundary beams set up relatively, still including set gradually between two boundary beams and edgewise in at least one of roof beam syntropy setting the roof beam and span the expansion joint and be arranged in the roof beam below the joist, the roof beam all supports and installs on the joist in each boundary beam and each, the both sides at expansion joint are fixed in at the both ends of joist adoption activity pressure -bearing support and fixed steel ball support respectively, a serial communication port, the utility model discloses an in the telescoping device, since a joist end bearing in slip pressure -bearing support, an end bearing in fixed steel ball support, consequently, the one end of joist is similar to hinge structure, and the other end is the expansion end for the joist can be