Steel structure modular construction method

The invention discloses a steel structure modular construction method. The construction method comprises the following steps that 1, a foundation is processed, foundation bolts are buried and positioned on the foundation, measurement is carried out for the first time, concrete pouring is carried out after installation requirements are met, measurement is carried out for the second time after pouring is firm, and sizing blocks are installed on the foundation bolts after the installation requirements are met; 2, a base plate is installed on the foundation bolts through the sizing blocks; 3, a module center line serves as a component positioning reference line, and components are spliced into a modular installation unit; 4, a temporary supporting structure is arranged on a hoisting tool, thehoisting tool is adopted for hoisting and installing the modular installation unit on the base plate, and after the perpendicularity and the levelness are aligned and adjusted, fixed installation is carried out; 5, the modula