CN209891234U - Precise positioning mechanism of pre-buried anchor bolts for steel tube column concrete foundation - Google Patents

Abstract

The utility model discloses a precise positioning mechanism for pre-embedded anchor bolts on a steel tube column concrete foundation, which solves the problem of difficulty in precise positioning of the pre-embedded anchor bolts on the steel tube column concrete foundation. Including steel tube columns, steel tube column concrete foundation steel bars (1) arranged in a ring, gantry constructed with steel tubes (2), pre-embedded anchor bolts (5) and steel plate positioning rings (3) to make a simulated steel tube column flange The steel plate positioning ring (3) is machined on the steel plate positioning ring (3) to make bolt holes that are exactly the same as the bolt holes on the steel pipe column flange, and the pre-embedded anchor bolts are threaded on the steel plate positioning ring (3). , The positioning ring with the embedded anchor bolts is supported and positioned through the steel pipe bracket, and it is fixedly connected with the formwork steel in the steel pipe column concrete foundation, and the foundation concrete is poured. When the poured foundation concrete solidifies, the positioning ring Ring removed. Accurate positioning and pre-embedding of pre-embedded anchor bolts are realized.

Description

Precise positioning mechanism of pre-buried anchor bolts for steel tube column concrete foundation

technical field

The invention relates to a steel tube column concrete foundation, in particular to a precise positioning mechanism and a positioning method for connecting and fixing a pre-buried anchor bolt at the bottom end flange of a steel tube column on the steel tube column concrete foundation.

Background technique

The steel pipe column foundation is generally a cast-in-place concrete foundation, and the anchor bolts need to be embedded on the base plate of the foundation. The steel pipe column is connected with the embedded anchor bolts through the connecting flange set at the bottom to complete the fixing of the steel pipe column; Whether the pre-embedding of the anchor bolts can be accurately positioned is directly related to the smooth installation of the subsequent steel pipe columns, that is, whether the bolt holes on the flanges at the bottom of the steel pipe columns can be smoothly inserted into the pre-embedded steel pipe columns when they are hoisted and dropped from a height. on the anchor bolts. The existing positioning method of pre-embedded anchor bolts before concrete pouring is: according to the position of the bolt holes on the flange plate at the bottom of the steel pipe column, on the template steel bar of the steel pipe column concrete foundation, the accurate positioning position of each anchor bolt is marked by measuring , bind and fix the anchor bolts on the marked position, and then carry out the concrete pouring of the steel pipe column foundation, and expose the tail of the embedded bolt to the outside of the top surface of the cast-in-place concrete; this positioning method has the following problems: (1 ) Measurement errors are unavoidable, (2) the marking operation is prone to errors, (3) the anchor bolts embedded in the foundation concrete pouring are prone to displacement, resulting in deviations in the positioning of the embedded bolts, making the steel pipe column hoisting and installation. At this time, the embedded bolts cannot enter the bolt holes of the steel pipe column flange. Since the embedded bolts have been fixed in the concrete, it is very difficult to adjust the position.

SUMMARY OF THE INVENTION

The invention provides a precise positioning mechanism and a positioning method for the pre-embedded anchor bolts of the steel tube column concrete foundation, and solves the technical problem of difficulty in precise positioning of the pre-embedded anchor bolts on the steel tube column concrete foundation.

The present invention solves the above technical problems through the following technical solutions:

The general idea of the present invention is to make a positioning ring that simulates the flange of a steel pipe column, process bolt holes on the positioning ring that are completely consistent with the bolt holes on the flange of the steel pipe column, and thread the pre-embedded anchor bolts on the flange. On the positioning ring, the positioning ring with the embedded anchor bolts is supported and positioned by the steel pipe bracket, and it is fixedly connected with the steel bars in the steel pipe column foundation formwork, and then the foundation concrete is poured. When the poured foundation concrete solidifies , Remove the positioning ring, and simulate the steel pipe column flange through the positioning ring to realize the accurate embedded positioning of the embedded anchor bolts.

An accurate positioning mechanism for pre-embedded anchor bolts of a steel tube column concrete foundation, comprising a steel tube column, annularly arranged steel tube column concrete foundation bars, a gantry constructed of steel tubes, pre-embedded anchor bolts and a steel plate positioning ring. A fixed connection flange is fixed at the end, and pre-embedded bolt penetration holes are arranged at equal intervals on the fixed connection flange. The upper part of the embedded anchor bolt is provided with an upper end step, and the top of the embedded anchor bolt above the upper end step is provided with a male thread. The shape of the positioning ring is exactly the same as the shape of the fixed connection flange fixed at the bottom end of the steel pipe column. The pre-embedded bolt penetration holes arranged at equal intervals and radians are completely coincident; on the steel tube-column concrete foundation bars, annular inner positioning ribs and annular outer positioning ribs are respectively set along the same horizontal plane, and the annular inner positioning ribs and the annular The outer locating ribs are lapped with radians at equal intervals, and the gantry frame made of steel pipes is erected on the steel tube column concrete foundation steel bars arranged in a circular manner with radians at equal intervals. The steel plate positioning ring is lapped on the top beam of the gantry frame. The bottom support plate fixedly arranged at the bottom of the pre-embedded anchor bolts is placed on the frame reinforcement, and the top of the pre-embedded anchor bolts passes through the pre-embedded bolts arranged at equal intervals on the steel plate positioning ring. After the hole is connected, it is screwed together with the nut.

The bottom surface of the steel plate positioning ring is lapped on the upper step set on the upper part of the pre-embedded anchor bolt; the gantry built with steel pipes erected at equal intervals on the steel pipe column concrete foundation steel bars arranged in a ring is arranged in a ring. The central axis of the steel tube-column concrete foundation reinforcement is radially arranged in the center.

A method for precise positioning of pre-embedded anchor bolts of a steel tube column concrete foundation, comprising the following steps:

The first step is to make a steel plate positioning ring, and process the pre-embedded bolt pre-penetrating holes on the steel plate positioning ring, so that the shape of the steel plate positioning ring is exactly the same as the shape of the fixed connection flange fixed at the bottom end of the steel pipe column. The pre-embedded bolt penetration holes set at equal intervals on the steel plate positioning ring are completely coincident with the pre-embedded bolt penetration holes set at equal intervals on the fixed connection flange; the steel pipe is used to make the gantry;

The second step: According to the elevation of the installed steel pipe column and the height of the pre-buried anchor bolts, determine the binding elevation of the annular inner positioning rib and the annular outer positioning rib, and bind the annular inner positioning rib and the annular outer positioning rib to the concrete foundation of the steel pipe column. on steel

The third step is to erect gantry frames at equal intervals on the steel tube column concrete foundation steel bars arranged in a circular manner. height, so that the beams of each gantry are set in the installation elevation plane of the fixed connection flange fixed at the bottom end of the steel pipe column, the steel plate positioning ring is welded and fixed on the beam of the gantry, and the central axis of the steel plate positioning ring It is coincident with the central axis of the steel tube column concrete foundation reinforcement;

The fourth step is to pass the top of the pre-embedded anchor bolt from the bottom to the top through the pre-embedded bolt pre-penetrating holes set at equal intervals on the steel plate positioning ring, and fix the bottom end of the pre-embedded anchor bolt. The set bottom support plate is placed on the frame reinforcement, and the nut is screwed on the top of the pre-embedded anchor bolt;

The fifth step is to set up the concrete pouring formwork of the steel tube column concrete foundation, pour the concrete, and expose the steel plate positioning ring on the top surface of the concrete foundation;

Step 6. After the concrete to be poured is solidified, remove the nut, and remove the steel plate positioning ring from the positioned pre-embedded anchor bolt;

The seventh step is to hoist and install the steel pipe column.

In the present invention, before the steel pipe column foundation is poured, the steel plate positioning ring that truly simulates the flange plate of the steel pipe column is supported directly above the steel pipe column foundation steel bars, and the pre-embedded anchor bolts are screwed on the steel plate positioning ring, and the The bottom end of the buried anchor bolt is accurately supported and positioned on the steel pipe column foundation steel bar, and then the steel pipe column foundation concrete is poured, which realizes the accurate positioning and pre-embedding of the pre-buried anchor bolt, improves the installation accuracy of the anchor bolt, and makes the The installation of the sequence steel column is time-saving and smooth.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the steel pipe column foundation reinforcement of the present invention;

FIG. 3 is a diagram of the cooperation relationship between the steel pipe column foundation steel bar, the gantry 2 and the steel plate positioning ring 3 of the present invention;

4 is a schematic structural diagram of the pre-embedded anchor bolt 5 of the present invention;

FIG. 5 is a diagram showing the cooperation relationship between the steel plate positioning ring 3, the pre-embedded anchor bolt 5 and the annular positioning rib of the present invention;

Fig. 6 is the structural schematic diagram after the steel pipe column foundation is poured concrete;

FIG. 7 is a schematic structural diagram of the steel pipe column foundation of the present invention after forming.

Detailed ways

The present invention is described in detail below in conjunction with the accompanying drawings:

An accurate positioning mechanism for pre-embedded anchor bolts of a steel tube column concrete foundation, comprising a steel tube column, a steel tube column concrete foundation steel bar 1 arranged in a ring, a gantry frame 2 constructed of steel tubes, a pre-embedded anchor bolt 5 and a steel plate positioning ring 3, the gantry The frame 2 has sufficient rigidity, strength and stability. A fixed connection flange is fixed at the bottom end of the steel pipe column, and embedded bolt penetration holes are arranged on the fixed connection flange at equal intervals. The bottom end of the embedded anchor bolt 5 is fixedly provided with a bottom support plate 8, the upper part of the embedded anchor bolt 5 is provided with an upper end step 9, and the top of the embedded anchor bolt 5 above the upper end step 9 is provided. The male thread 10 is provided with pre-embedded bolt pre-penetrating holes 11 on the steel plate positioning ring 3 at equal intervals. The shape of the steel plate positioning ring 3 is exactly the same as the shape of the fixed connection flange fixed at the bottom end of the steel pipe column. , the pre-embedded bolt penetration holes 11 arranged at equal intervals on the steel plate positioning ring 3 and the pre-embedded bolt penetration holes arranged at equal intervals on the fixed connection flange are completely coincident; The concrete foundation steel bar 1 is respectively clasped and provided with annular inner positioning rib 6 and annular outer positioning rib 7 along the same horizontal plane, and frame strength ribs 12 are overlapped between the annular inner positioning rib 6 and the annular outer positioning rib 7 at equal intervals. , a gantry frame 2 constructed of steel pipes is erected on the steel pipe column concrete foundation steel bar 1 arranged in a ring at equal intervals, and the steel plate positioning ring 3 is overlapped on the top beam of the gantry frame 2, and the pre-embedded anchor bolts 5 The bottom bracket 8 fixedly arranged at the bottom end is placed on the frame rib 12, and the top end of the pre-embedded anchor bolt 5 passes through the pre-embedded bolts arranged at equal intervals on the steel plate positioning ring 3 in advance through the connection hole 11 and then connects with the nut. 4 screwed together.

The lower bottom surface of the steel plate positioning ring 3 is lapped on the upper step 9 provided on the upper part of the pre-embedded anchor bolt 5; the gantry 2 constructed of steel pipes erected at equal intervals on the annularly arranged steel pipe column concrete foundation steel bar 1 It is arranged radially with the central axis of the steel tube column concrete foundation steel bar 1 arranged in a ring as the center.

A method for precise positioning of pre-embedded anchor bolts of a steel tube column concrete foundation, comprising the following steps:

The first step is to make a steel plate positioning ring 3, and process the pre-embedded bolt pre-penetrating holes 11 on the steel plate positioning ring 3, so that the shape of the steel plate positioning ring 3 is the same as that of the fixed connection flange fixed at the bottom end of the steel pipe column. It is exactly the same. The pre-embedded bolt penetration holes 11 arranged at equal intervals on the steel plate positioning ring 3 are completely coincident with the pre-embedded bolt penetration holes arranged at equal intervals in the fixed connection flange, and the steel plate positioning ring The thickness of 3 is 10 mm, and the diameter of the penetration hole of the embedded bolt is 1 mm larger than the outer diameter of the male thread 10 set at the top of the embedded anchor bolt 5; the gantry frame 2 is made of steel pipe;

The second step is to determine the binding elevation of the annular inner positioning rib 6 and the annular outer positioning rib 7 according to the elevation of the installed steel pipe column and the height of the pre-buried anchor bolt 5, and bind the annular inner positioning rib 6 and the annular outer positioning rib 7 On the steel tube column concrete foundation steel bar 1;

The third step is to erect a gantry 2 on the circularly arranged steel tube column concrete foundation steel bar 1 at equal intervals and radians, and the gantry frame 2 is radially arranged with the center axis of the annularly arranged steel tube column concrete foundation steel bar 1 as the center; adjust The height of each gantry frame 2 is such that the beams of each gantry frame 2 are set in the installation elevation plane of the fixed connection flange fixed at the bottom end of the steel pipe column, and the steel plate positioning ring 3 is welded and fixed on the beam of the gantry frame 2. Make the central axis of the steel plate positioning ring 3 coincide with the central axis of the steel tube column concrete foundation steel bar 1;

The fourth step is to pass the top end of the pre-embedded anchor bolt 5 from the bottom to the top through the pre-embedded bolt pre-penetrating hole 11 arranged at equal intervals on the steel plate positioning ring 3, and insert the pre-embedded anchor bolt 5. The bottom support plate 8 fixedly arranged at the bottom end is placed on the frame rib 12, the nut 4 is screwed on the top of the pre-embedded anchor bolt 5, and the height of the top of the anchor bolt 5 is adjusted by tightening the nut 5, using The level gauge shall measure and control the top elevation of the anchor bolts 5 to be consistent; under the condition that the bottom of the pre-embedded anchor bolts 5 is not offset and does not sink, fix the frame rib 12 and the bottom end of the pre-embedded anchor bolts 5. The bottom support plate 8 is welded together, and then the frame force rib 12 is welded together with the annular inner positioning rib 6 and the annular outer positioning rib 7 respectively;

The fifth step is to set up the concrete pouring formwork of the steel tube column concrete foundation, pour the concrete, and expose the steel plate positioning ring 3 on the top surface of the concrete foundation; After applying solid butter, wrap it with plastic cloth, and tie it with iron wire to protect the thread; in pouring concrete, especially when pumping concrete is used, it is necessary to avoid the extrusion of the concrete on the pre-buried anchor bolts 5, which will cause the anchor The bolts go in position; the concrete pump pipe should not be poured directly against the pre-embedded anchor bolt 5, and the concrete material should be poured manually within 300 mm around the pre-embedded anchor bolt 5; when using the vibrating rod, cut the Do not vibrate excessively within 300 mm around the pre-embedded anchor bolt 5; when pouring concrete, the construction personnel must strengthen the monitoring of the position of the pre-embedded anchor bolt 5, and use a level and theodolite to pre-embed each group at any time. Check the position of the anchor bolt 5, and correct it immediately if any deviation is found;

The sixth step, after the concrete to be poured is solidified, remove the nut 4, and remove the steel plate positioning ring 3 from the positioned pre-embedded anchor bolt 5;

The seventh step is to hoist and install the steel pipe column.

Claims (2)

1. An accurate positioning mechanism for pre-embedded anchor bolts of a steel tube column concrete foundation, comprising steel tube columns, annularly arranged steel tube column concrete foundation bars (1), a gantry constructed of steel tubes (2), and pre-embedded anchor bolts (5). ) and the steel plate positioning ring (3), a fixed connection flange is fixed at the bottom end of the steel pipe column, and pre-embedded bolt penetration holes are arranged on the fixed connection flange at equal intervals. The bottom end of the bolt (5) is fixedly provided with a bottom support plate (8), an upper step (9) is arranged on the upper part of the pre-embedded anchor bolt (5), and the pre-embedded anchor above the upper step (9) The top end of the bolt (5) is provided with a male thread (10), which is characterized in that the steel plate positioning ring (3) is provided with pre-embedded bolt pre-penetrating holes (11) at equal intervals and the steel plate positioning ring (3) The shape of the fixed connection flange is exactly the same as that of the fixed connection flange fixed at the bottom end of the steel pipe column. The pre-embedded bolt penetration holes arranged at equal intervals and radians on the flange are completely coincident; on the steel tube column concrete foundation reinforcement (1) along the same horizontal plane, annular inner positioning ribs (6) and annular outer outer The positioning rib (7) is lapped between the annular inner locating rib (6) and the annular outer locating rib (7) at equal intervals and radians are overlapped with frame reinforcement bars (12), and the steel tube column concrete foundation reinforcement (1) arranged in the annular A gantry frame (2) constructed of steel pipes is erected on the radians at equal intervals, the steel plate positioning ring (3) is overlapped on the top beam of the gantry frame (2), and the bottom end of the pre-embedded anchor bolts (5) is fixed The set bottom support plate (8) is placed on the frame rib (12), and the top end of the pre-embedded anchor bolt (5) passes through the pre-embedded bolts arranged at equal intervals on the steel plate positioning ring (3) and is pre-connected. The hole (11) is then screwed together with the nut (4). 2. The precise positioning mechanism for pre-embedded anchor bolts of a concrete-filled steel tube column according to claim 1, characterized in that the lower bottom surface of the steel plate positioning ring (3) is lapped on the pre-embedded anchor bolts (5) On the upper step (9) set on the upper part; the gantry (2) constructed of steel pipes erected at equal intervals on the circularly arranged steel pipe column concrete foundation steel bars (1) is based on the circularly arranged steel pipe column concrete foundation steel bars (1). ) are arranged radially from the center axis.

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