Prefabricated assembly type reinforced-frame template for post-cast belt of raft plate foundation and construction method thereof

Abstract

The invention discloses a prefabricated assembly type reinforced-frame template for a post-cast belt of a raft plate foundation and a construction method thereof. The prefabricated assembly type reinforced-frame template comprises a plurality of cuboid reinforced frame template units with fixed connection of heads and tails, wherein each reinforced frame template unit comprises an upper frame, a lower frame and water-stopping steel plates arranged between the upper frame and the lower frame; the two water-stopping steel plates are respectively welded between the long-edge side surfaces of theupper frames and the long-edge side surfaces of the lower frames; the two long-edge side surfaces of the upper frames and the long-edge side surfaces of the lower frames are respectively provided witha net-shaped template surface layer; comb dies are respectively fixed on the top parts of the two long-edge side surfaces of the upper frames. The prefabricated assembly type reinforced-frame template for the post-cast belt of the raft plate foundation and the construction method disclosed by the invention have the beneficial effects that the construction process of the template of the post-castbelt for carrying out site welding, binding, installation and blocking after reinforcing bars at the position of the post-cast belt of raft plates are completely bound is changed, so that the startingtime of the following produces is advanced, the construction progress is accelerated, and the construction period is shortened; simultaneously, the narrow construction space among the reinforcing bars of the raft plates is changed, the construction condition is improved and the construction quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a prefabricated assembled steel frame raft foundation post-cast strip formwork and a construction method thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, there are more and more high-rise and super high-rise buildings, and the proportion of large and ultra-thick raft foundations is gradually increasing. In order to prevent the cast-in-place concrete structure from shrinking unevenly, eliminate or reduce the concrete Due to the adverse effects of temperature, humidity deformation, and structural settlement deformation on the building, post-pouring belts should be installed at appropriate positions on the foundation raft and the main body of the structure, and the construction quality of the raft post-casting belt becomes the key to the construction of the raft foundation . [0003] The production a...

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Problems solved by technology

[0003] The production and installation of the traditional post-cast strip formwork and water-stop steel plate requires on-site installation and welding after the reinforcement binding at the post-cast strip position of the raft slab is completed, which restricts the start time of the follow-up process and delays the progress of the foundation construction. Working on the raft steel reinforcement, it is difficult to guarantee the welding quality, and the fixation is not firm, which will easily lead to quality problems such as mold runout and grout leakage. In the junction area of ​​rafts with different thicknesses, the installation quality is more difficult to control and the construction efficiency is lower.

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