Construction method of raft foundation embedded steel column in complex environment

Abstract

The invention discloses a construction method of a raft foundation embedded steel column in a complex environment, which relates to the technical field of embedded steel column construction, and comprises the following steps: crushing a concrete pile head, constructing a concrete cushion layer, placing stirrups on the concrete cushion layer, and installing angle supports in the stirrups. Pre-embedded cross-shaped steel columns are erected on the tops of the stirrups, the pre-embedded cross-shaped steel columns are welded to the stirrups, steel column longitudinal bars, raft foundation steel bars and steel column stirrups are bound, the raft foundation steel bars are welded to the pre-embedded cross-shaped steel columns and the stirrups, and the raft foundation is formed through casting. According to the method, the raft foundation and the embedded steel column can be integrally formed under the construction environment that the steel bar type embedded part and the cup type foundation are not preset, and compared with the construction mode that the steel bar type embedded part is embedded in advance and the cup type foundation is reserved, the construction workload is greatly reduced, the construction period is effectively shortened, and the construction cost is effectively controlled; and the stirrups effectively fix the pre-embedded cross-shaped steel column to form a stable and firm structure, and the construction precision is high.

Description

technical field [0001] The invention relates to the technical field of pre-embedded steel column construction, in particular to a method for integrated construction of a raft foundation pre-embedded steel column and a concrete cap in a complex environment. Background technique [0002] A steel structure building refers to a building that transfers a large number of on-site operations in the traditional construction method to the factory, processes and manufactures building components and accessories in the factory, transports them to the construction site, and assembles and installs them on site through reliable connection methods. . Steel structure building has become a common modern building system. It replaces the traditional reinforced concrete or brick-concrete load-bearing system with steel components. It has the characteristics of saving resources, protecting the environment, and reducing pollution. It provides people with healthy, applicable, efficient, and environme...

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Problems solved by technology

[0010] However, the cup-shaped foundation of the prior art arranges the pouring formwork according to the size of the reserved cup opening and the foundation before pouring concrete. Because the number of steel bars bound in the foundation is large, the layout of the formwork is difficult and time-consuming; At the same time, the formwork also needs to control the axis and elevation when it is put into the foundation, which further increases the difficulty of construction. Once the reserved cup mouth is seriously misaligned, it cannot be corrected, and the entire foundation needs to be scrapped and re-constructed, which consumes a lot of rework; the existing The installation of technical steel columns still needs to wait for the concrete load to meet the design requirements, and the design period is inevitably longer; in addition, the pre-embedded steel columns in the cup-shaped foundation construction need to take measures to fix the pre-embedded steel columns in the cup. The construction is labor-intensive, time-consuming and difficult to correct, which further prolongs the overall construction period of the pre-embedded steel columns in the cup-shaped foundation construction

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