The invention discloses an
assembly type
utility tunnel for building envelop bearing strength and a construction method thereof. The structure is formed by two parts of a building envelop and a prefabricated
utility tunnel by
casting in place and connecting, the building envelop comprises a triaxial soil-
cement stirring
pile and a
drill hole cast-in-place
pile, the top of the
drill hole cast-in-place
pile is reserved with longitudinal reinforcements, the inner side, near the bottom of a foundation pit, of the
drill hole cast-in-place pile is reserved with pre-embedded reinforcements; the top of the prefabricated
utility tunnel is provided with a set of structural beams at intervals, the top of each structural beam is provided with a lap plate, the two ends of each lap plate are reserved with lap plate reserved reinforcements extending outward, the two sides of the bottom of the prefabricated utility tunnel are reserved with bottom plate reserved reinforcements extending outward, pile top reserved reinforcements are connected with the lap plate reserved reinforcements, and the pre-embedded reinforcements are connected with the bottom plate reserved reinforcements. According to the
assembly type utility tunnel for building envelop bearing strength and the construction method thereof, nodes of the prefabricated utility tunnel are all in cast-in-place connection with the reinforcements of the
drill hole cast-in-place pile, the damage of uneven settlement caused by foundation
subsidence is prevented, the construction period is shortened, and the
assembly type utility tunnel is economic and environmental.