Concrete pouring device for multi-partition-plate concrete-filled steel tubular column

Abstract

The utility model discloses a concrete pouring device for a multi-partition steel pipe concrete column, which comprises a support member assembled at the top of a concrete steel pipe, and a grouting pipe extending below the pouring liquid level in the concrete steel pipe is assembled on the support member in a liftable manner; the distance measuring component is arranged on the grouting pipe and used for driving the grouting pipe to be synchronously lifted along with the pouring liquid level. The supporting component comprises a supporting frame fixed to the top of the outer wall of the concrete steel pipe, and a jacking mechanism connected with the grouting pipe is arranged on the supporting frame. And a grating plate is arranged on the grouting pipe below the pouring liquid level. According to the concrete pouring device, by optimizing a concrete pouring and vibrating method, the uniformity and compactness of concrete are improved, so that the overall performance of the structure is enhanced, and elevation control can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of concrete pouring for concrete-filled steel tubular columns, and particularly to a concrete pouring device for a multi-partition concrete-filled steel tubular column. Background Art

[0002] Concrete-filled steel tubular columns are widely used in construction projects and have advantages such as strong load-bearing capacity and good seismic performance. The construction method is as follows: continuously pour concrete through a grouting pipe at the top port of the concrete steel pipe, and use the concrete steel pipe as an external mold. After the poured concrete solidifies, a formed concrete-filled steel tubular column is obtained.

[0003] However, the current direct pouring method often leads to the problem that it is not easy to fill the concrete densely inside the steel pipe column, and it is easy to produce problems such as holes, delamination, looseness, and defects at the connection parts. The reason is that compared with the templates assembled by conventional pouring and splicing, the concrete steel pipe is usually an integral structure and has good sealing performance. Therefore, when pouring, the gas inside the concrete steel pipe cannot be effectively discharged, resulting in the above-mentioned defects caused by air bubbles remaining inside the concrete; at the same time, during the pouring process, the elevation of the concrete surface inside the steel pipe column cannot be observed in real time, affecting the overall performance of the structure. Therefore, the uniformity and density of the current concrete-filled steel tubular column pouring still need to be further improved. Summary of the Invention

[0004] In view of the above problems, this application aims to provide a concrete pouring device for a multi-partition concrete-filled steel tubular column, which optimizes the concrete pouring method, improves the uniformity and density of the concrete, thereby enhancing the overall performance of the structure, and can achieve elevation control.

[0005] To achieve the above object, the technical solution adopted in this application is as follows: A concrete pouring device for a multi-partition concrete-filled steel tubular column, characterized in that: it includes a support member assembled on the top of the concrete steel pipe, on which a grouting pipe extending below the pouring liquid level inside the concrete steel pipe is assembled in a liftable manner, and a ranging member is provided on the grouting pipe to drive it to lift synchronously with the pouring liquid level.

[0006] Preferably, the support member includes a support frame fixed on the top of the outer wall of the concrete steel pipe, and a jacking mechanism connected to the grouting pipe is provided on the support frame.

[0007] Preferably, a grid plate is provided on the grouting pipe below the pouring liquid level.

[0008] Preferably, the grid plate has partition rods distributed at intervals in the circumferential direction, and the side wall of each partition rod is set as an inclined surface structure.

[0009] The beneficial effects of this application are:

[0010] (1) Improve the uniformity of concrete pouring

[0011] The grouting pipe is inserted 1m below the concrete surface for continuous pouring, and the grouting pipe is slowly lifted during the pouring process to ensure that the bottom of the grouting pipe is always below the concrete surface. By using the gravity drop pressure during concrete pouring, the concrete can uniformly enter below the previously poured concrete and jack up the previously poured concrete to gradually rise along the steel pipe column, thus effectively avoiding the problem of uneven concrete pouring in the traditional method.

[0012] During the concrete pouring process, for the vibration of the stiffening ring plate part inside the concrete steel pipe, the vibrator is inserted through the horizontal exhaust hole for vibration, ensuring the compactness of the concrete pouring and avoiding structural defects caused by air bubbles or non-compactness.

[0013] (2) Improve construction efficiency and quality

[0014] The device has a simple structure and is easy to operate. During the construction process, no complex equipment and cumbersome steps are required, greatly improving the construction efficiency. At the same time, due to the optimization of the concrete pouring and vibration processes, the overall construction quality has been significantly improved, reducing the cost of repair and reinforcement due to concrete quality problems in the later stage.

[0015] (3) Enhancement of structural performance

[0016] Through this pouring device, the overall structural performance of the concrete has been significantly improved. The uniformity and density of the concrete have been increased, enhancing the bearing capacity and seismic performance of the concrete-filled steel pipe column, ensuring the safety and durability of the building structure.

[0017] (4) Stable power

[0018] Since the distance from the bottom of the grouting pipe to the concrete surface remains unchanged, it ensures the stability of the pressure during the concrete pumping process while reducing the pumping pressure. The pumping power during the concrete pouring process remains stable, reducing the load fluctuation of the pumping equipment, avoiding the pouring quality problems caused by unstable pumping power, and improving the construction continuity and efficiency.

[0019] (5) Elevation control

[0020] The elevation of the concrete surface can be controlled in real time, saving material loss. Description of the drawings

[0021] Figure 1 It is the overall structure diagram of the pouring device of this application.

[0022] Figure 2 It is the diagram showing the flow direction of the concrete poured inside the grouting pipe extending below the pouring liquid surface of this application.

[0023] Figure 3 This is a diagram showing the position of the grid plate for this application.

[0024] Figure 4 This is a plan structure diagram of the grid plate for this application.

[0025] Figure 5 This is a diagram showing the passage of the concrete slurry of this application through the grid plate.

[0026] In the figure: 5 - Laser rangefinder; 6 - Partition board. Detailed implementation manner

[0027] In order to enable ordinary technicians in the field to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Refer to the Figures 1 to 5 A concrete pouring device for a multi-partition steel tube concrete column as shown, specifically as Figure 1 shown, including a support member assembled on the top of the concrete steel tube 1, and a grouting pipe 2 that is liftably assembled on this support member and extends into the concrete steel tube 1 below the pouring liquid level. When pouring the concrete steel tube 1, the support member is assembled on the outer top of the concrete steel tube 1, and then the grouting pipe 2 is assembled on this support member, and the grouting pipe 2 can extend into the concrete steel tube 1 below the pouring liquid level (preferably the depth extending below the liquid level is not less than 1 m). Its function is: the concrete poured into the grouting pipe 2 uses the gravity drop pressure during pouring, enters the previously poured concrete (below the liquid level) through the grouting pipe 2, and jacks up the previously poured concrete to gradually rise along the inside of the concrete steel tube 1 (as shown by the arrow in Figure 2 ), which can well discharge the concrete slurry and the air in the concrete steel tube 1, thereby improving the uniformity and density of the concrete. And the grouting pipe 2 extending 1 m below the liquid level can ensure the stable rise of the concrete liquid level.

[0029] During the pouring process, the concrete liquid level gradually rises. If the grouting pipe 2 is stationary, the depth of the concrete poured into the pouring liquid level will increase synchronously, resulting in the concrete in the grouting pipe being unable to effectively drive the previously poured concrete to achieve the function of tumbling and discharging air. Therefore, this support member can also drive the grouting pipe 2 to lift synchronously with the pouring liquid level to perform continuous gas discharge operations on the continuously poured concrete. In order to accurately detect the elevation of the pouring liquid level, a ranging member for driving it to lift synchronously with the pouring liquid level is provided on the grouting pipe 2. This ranging mechanism is preferably a laser rangefinder 5, and according to its real-time measurement of the pouring liquid level, it guides the grouting pipe 2 to lift synchronously with the pouring liquid level.

[0030] Specifically, as Figure 1As shown, the support member includes a support frame 3 fixed to the top of the outer wall of the concrete-filled steel pipe 1, which is preferably a semi-circular clamping plate structure. The symmetrical semi-circular clamping plates are sleeved on the top of the outer wall of the concrete-filled steel pipe 1 and are preferably connected by fastening bolts. To lift the grouting pipe 2, as Figure 1 shown, a jacking mechanism connected to the grouting pipe 2 is provided on the support frame 3. The jacking mechanism can preferably be lifted by a hydraulic cylinder or a lead screw guide rod, which is not shown in detail in the figure. According to the elevation of the liquid level measured by the laser rangefinder in real time and fed back to the jacking device, the synchronous lifting of the grouting pipe 2 is realized, so that the depth of the grouting pipe 2 extending below the pouring liquid level is the same, avoiding being too deep or too shallow and affecting the bubble discharge effect in the concrete.

[0031] To further improve the bubble discharge effect in the concrete, as Figures 3 - 4 shown, a grid plate 4 is provided on the grouting pipe 2 below the pouring liquid level. After the concrete poured into the grouting pipe 2 is mixed into the previously poured concrete, the pressure difference is used to drive the concrete to churn upward. During the churning process, it passes upward through the grid plate 4, and the grid plate 4 "divides" the concrete, thereby discharging the contained gas, further improving the gas discharge effect in the concrete, and thus improving the concrete pouring quality.

[0032] To further improve the "division" effect of the grid plate 4 on the concrete, as Figures 4 - 5 shown, the grid plate 4 has partition rods 41 arranged at circumferential intervals, and the side wall of each partition rod 41 is set as an inclined surface structure. In this structure, the concrete flow cavity between adjacent partition rods 41 is a tapered cavity with a larger bottom and a smaller top, which will increase the flow pressure of the concrete passing through the grid plate 4, and thus force the bubbles contained in the concrete to be "squeezed out", further improving the bubble discharge effect in the poured concrete, and thus improving the pouring quality of the concrete-filled steel pipe column.

[0033] The principle of this application is: when pouring the concrete-filled steel pipe, first assemble the support frame 3 on the top of the outer wall of the concrete-filled steel pipe 1, then connect the grouting pipe 2 to the jacking mechanism, install a laser rangefinder on the grouting pipe 3, and set a grid plate 4 at the lower part of the grouting pipe 2. The bottom end of the grouting pipe 2 is driven by the jacking mechanism to extend below the injection slurry liquid level by 1 m (after pouring 1.5 m high of concrete in the concrete-filled steel pipe, then assemble the grouting pipe 2), and then a hopper is connected to the top of the grouting pipe 2 for concrete pouring.

[0034] During pouring, after the concrete poured into the grouting pipe 2 is mixed with the previously poured concrete, it uses the pressure difference to support the previously poured concrete to gradually rise and churn along the inside of the concrete steel pipe 1. It can effectively discharge the concrete slurry and the air in the concrete steel pipe 1. During the churning process, it passes upward through the grid plate 4, and the grid plate 4 "divides" the concrete, thereby discharging the contained gas, further improving the gas discharge effect in the concrete, and thus improving the quality of concrete pouring.

[0035] The laser rangefinder installed on the grouting pipe 2 detects the height of the pouring liquid surface in real time and drives the grouting pipe 2 to lift synchronously through the jacking mechanism, ensuring the consistency of the depth of the grouting pipe 2 inserted into the slurry. After pouring is completed, a vibrating rod can be inserted through the horizontal exhaust hole for vibration at the stiffening ring plate part inside the concrete steel pipe (the exhaust hole is blocked during the pouring process) to ensure the compaction of the concrete pouring.

[0036] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed.

Claims

1. A concrete pouring device for a multi-diaphragm concrete-filled steel tube column, characterized in that: It includes a support member assembled on the top of a concrete steel pipe (1), on which a grouting pipe (2) extending below the pouring liquid level into the concrete steel pipe (1) is assembled in a liftable manner, and a ranging member is provided on the grouting pipe (2) to drive it to lift synchronously with the pouring liquid level.

2. The concrete pouring device according to claim 1, characterized in that: The support member includes a support frame (3) fixed to the top of the outer wall of the concrete steel pipe (1), and a jacking mechanism connected to the grouting pipe (2) is provided on the support frame (3).

3. The concrete pouring device according to claim 2, characterized in that: A grid plate (4) is provided on the grouting pipe (2) below the pouring liquid level.

4. The concrete pouring device according to claim 3, characterized in that: The grid plate (4) has partition rods (41) distributed at circumferential intervals, and the side wall of each partition rod (41) is set as an inclined surface structure.

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