A large concrete steel-clad column construction method and auxiliary collection mechanism

Abstract

The invention discloses a large-scale concrete steel-clad column construction method in the field of building engineering technology, which specifically comprises the following steps: S1: prefabricate whole dowels, lower dowels, upper dowels and guide cones; S2: pre-embed anchor bolts, whole dowels and lower dowels, and carry out base construction; S3: perform roughening treatment on the base, set a shim group, and then install the guide cone on the top of the anchor bolt straight rod; S4: hoist the steel structure, so that the steel structure enters the base from one side of the lower dowel, and recycles the guide cone; S5: after inspecting the installed steel structure, construct the grouting layer; S6: use a connector to install the upper dowel on the lower dowel, and install stirrups; S7: support a concrete steel-clad column template, pour concrete into the template, wait for it to solidify, remove the template, and clean it; in the invention, the bottom plate of the steel structure column enters the base from the side of the dowel reserved in the concrete steel-clad column, which solves the problem that the clearance size in the hook of the embedded dowel of the large concrete steel-clad column is small and the steel structure cannot be directly installed.

Claims

1. A large concrete steel-clad column construction method, characterized in that: The specific steps include: S1: prefabricated integral dowel bars (211), lower dowel bars (212), upper dowel bars (213) and an introduction cone (44); S2: pre-embed the anchor bolts (4), the whole dowel bars (211) and the lower dowel bars (212), and then inject concrete to complete the construction of the base (1); S3: After the surface of the base (1) is subjected to a pitting treatment and a washer group is provided, a guide cone (44) is installed on the top of the straight rod (41) of the anchor bolt; S4: hoisting the steel structure (3) so that the steel structure (3) enters the base (1) from one side of the lower dowel (212) and then moves the steel structure (3) downward so that the anchor bolts (4) pass through the bolt holes on the bottom plate (31). The auxiliary collection mechanism is then used to recover the guide cone (44) and then the bottom plate (31) is fixed. S5: After inspecting the installed steel structure (3), the grouting layer (5) is constructed; S6: Using a connector (214), the upper dowel bar (213) is installed on the lower dowel bar (212), and stirrups (22) are installed; S7: Supporting the formwork of the concrete-encased steel column (2) on the outer side of the whole dowel (211) and the lower dowel (212), and pouring concrete into the formwork, and after the concrete solidifies, removing the formwork and cleaning; The auxiliary collection mechanism comprises: a support rod (6), a mounting frame (8) which moves along the length direction of the support rod (6) and an elastic element connected to the mounting frame (8) are slidably provided on the support rod (6), a winding mechanism (10) is provided at one end of the support rod (6) away from the mounting frame (8), a pull rope (9) is provided between the mounting frame (8) and the winding mechanism (10), an electromagnet (16) is provided on the mounting frame (8), and a collection box (7) for collecting the introduction cone (44) is provided on the support rod (6); A mounting member (15) is rotatably arranged inside the mounting frame (8), and the electromagnets (16) are provided in a plurality of groups. The plurality of groups of electromagnets (16) are evenly distributed on the outside of the mounting member (15). A driving member is connected to the mounting member (15) to drive the mounting member (15) to rotate.

2. A large concrete steel-clad column construction method according to claim 1, characterized in that: The upper part of the introduction cone (44) is conical, and the lower part is a sleeve, and the inner diameter of the sleeve is equal to the outer diameter of the thread of the anchor bolt straight rod (41).

3. A large concrete steel-clad column construction method according to claim 1, characterized in that: The concrete-coated steel column (2) has at least one surface with lower inserted reinforcement (212).

4. A large concrete steel-clad column construction method according to claim 1, characterized in that: The support rod (6) is provided with a first touch switch (14) located on the moving path of the mounting frame (8), and the first touch switch (14) is electrically connected to the electromagnet (16) to control the electromagnet (16) to cut off power.

5. A large concrete steel-clad column construction method according to claim 4, characterized in that: The support rod (6) is provided with a slot (12), a reel (13) and a torsion spring connected to the reel (13) are rotatably provided in the slot (12), a pipe (11) connected to the mounting frame (8) is wound around the reel (13), and a connecting cable between the electromagnet (16) and the first touch switch (14) is located in the pipe (11).

6. A large concrete steel-clad column construction method according to claim 1, characterized in that: A mounting groove (17) is provided at the connection portion between the mounting member (15) and the electromagnet (16), the electromagnet (16) is slidably inserted into the mounting groove (17), an elastic member (18) is provided between the electromagnet (16) and the mounting groove (17), a second touch switch (20) electrically connected to the driving member is provided in the mounting groove (17), and the electromagnet (16) is provided with a pressing block (19) located inside the second touch switch (20).

7. A large concrete steel-clad column construction method according to claim 1, characterized in that: The collecting box (7) is detachably mounted on the support rod (6), and an elastic spacer is arranged inside the collecting box (7).

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