Novel rigid joint

The utility model provides a novel rigid joint which comprises a front groove section and a rear groove section, a front width steel box body is placed in the front groove section, a rear width joint is placed in the rear groove section, the depth of the front groove section is larger than that of the rear groove section, and concrete is poured on the portion, deeper than the rear groove section, of the front width steel box body after the front width steel box body is placed in the front groove section. A sealed cavity is arranged in a sealed interval in the middle of the leading width steel box body, containing intervals in butt joint with the rear width connectors are arranged on the two sides of the sealed cavity, prefabricated connector boxes are placed in the containing intervals, concrete is poured in the sealed cavity, and square bayonet steel plates are arranged on the flange end faces of the leading width steel box body. The rear row width joint is provided with a T-shaped flange steel plate inserte