The utility model relates to a steel pipe damping rubber is roof beam even, moreover, the steam generator is simple in structure, and convenient for operation, the inside packing of outside sheathed tube has high damping rubber layer, high damping rubber layer both ends are provided with concrete shutoff layer, the portion is provided with vertical enhancement device at high damping rubber in situ, be provided with horizontal enhancement device at concrete shutoff in situ, this product, adopt the steel pipe to make the outsourcing component, the concrete is filled at the inside both ends of steel pipe, mid portion fills high damping rubber, it is strong that the company's of making roof beam becomes a both ends rigidity, the weak power consumption type component of middle rigidity, then under seismic action, the shear deformation at lian liang both ends very easily makes the interlude get into the power consumption state, increase the structural damping, promote the major structure security performance. Fill the concrete in the steel pipe at product both ends to buried the reinforcing bar, so that carry on reliable cast -in -place the connection with corresponding end shear wall limb, face down bonding stiffening rib board in the mid portion steel pipe, and fill high damping rubber material in order to improve its local stability inside the steel pipe.