Underground spliced ​​precast concrete member, construction assembly and construction method

Abstract

The invention discloses an underground spliced precast concrete member, a construction combination body and a construction method. The precast concrete member is formed by splicing a plurality of precast concrete member units in the vertical direction and in the horizontal direction; horizontal tenons and mortises are arranged on the upper end faces and the lower end faces of the member units, and every two adjacent member units in the vertical direction are connected into a whole through insertion and connection of the tenons and the mortises; connection wedge openings are formed in the left end faces and the right end faces of the member units, and every two adjacent member units in the horizontal direction are connected into a whole through the connection wedge openings; each member unit is provided with vertical post-tensioned pre-stress reinforcement holes, the post-tensioned pre-stress reinforcement holes of the member units spliced in the vertical direction are aligned in the vertical direction, and post-tensioned pre-stress reinforcements are arranged inside the post-tensioned pre-stress reinforcement holes. According to the underground spliced precast concrete member, the cost can be reduced, the construction cost can be lowered, the construction speed is high, and the quality is reliable. The precast concrete member can be used for supporting deep foundation pits and slopes and has the effect of retaining soil and stopping water.

Description

technical field [0001] The invention belongs to the field of civil construction engineering, and relates to an underground connection type prefabricated concrete component and a method. Background technique [0002] At present, in the support of deep foundation pits, only the underground diaphragm wall can achieve the integration of piles and walls. The existing underground diaphragm walls are all constructed by cast-in-place method, and concrete is poured on site. , and the quality is difficult to guarantee, and it is easy to cause additional ground settlement during construction, resulting in the settlement and cracking of nearby buildings and engineering accidents. At present, there is no splicing prefabricated underground diaphragm wall structure in the world. Contents of the invention [0003] Technical problem: The present invention provides an underground prefabricated concrete component that can save costs, reduce construction costs, fast construction speed, and r...

AI Technical Summary

Problems solved by technology

[0002] At present, in the support of deep foundation pits, only the underground diaphragm wall can achieve the integration of piles and walls. The existing underground diaphragm walls are all constructed by cast-in-place method, and concrete is poured on site. , and the quality is difficult to guarantee, and it is easy to cause additional ground settlement during construction, resulting in the settlement and cracking of nearby buildings and engineering accidents

At present, there is no jointed prefabricated underground diaphragm wall structure in the world.

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