Combined construction frame for civil engineering

The utility model belongs to the technical field of construction frames, and particularly relates to a combined construction frame for civil engineering, which comprises a mounting plate, support rodsare movably connected to four corners of the top of the mounting plate, mounting blocks are fixedly connected to the bottoms of two sides of each support rod, and fixing bolts are in threaded connection to the tops of the mounting blocks. According to the combined construction frame for civil engineering, the supporting rods are correspondingly installed on the top of the installation plate through the fixing bolts, then the limiting rods are correspondingly installed between the second fixing blocks and the first fixing blocks and fixed through the pin rods, and therefore the supporting rodsare further limited through the limiting rods and prevented from inclining in the using process; and then the frame plate is placed at the top of the bearing block, the protruding block is inserted into the groove, the frame