A construction method for high-rise frame columns

Abstract

This invention relates to a construction method for high-rise frame columns, comprising the following steps: providing vertical reinforcement and stirrups; binding the reinforcement structure of the frame column to be constructed with the vertical reinforcement and stirrups; determining the number and location of buffer plates according to the pouring height on the frame column to be constructed; installing buffer plates at the designated locations within the reinforcement structure; installing outer formwork around the perimeter of the reinforcement structure; inserting a pump pipe from above the reinforcement structure; inputting concrete for pouring; and using the buffer plates to absorb the force of the falling concrete for cushioning. In this construction method for high-rise frame columns, by adding buffer plates within the frame column, the falling speed of the concrete is reduced, the momentum of the concrete reaching the bottom of the frame column is decreased, the risk of concrete segregation is avoided, concrete root rot is prevented, and the construction quality of the frame column is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a construction method for high-rise frame columns. Background Technology

[0002] During the concrete pouring process of high-rise frame columns, the concrete falls freely to the bottom of the frame column. Due to the high falling height, the velocity when it reaches the bottom is relatively large, resulting in a large momentum of concrete. This makes the concrete prone to segregation, leading to the phenomenon of rotten roots in the frame column.

[0003] Because the stirrups inside the frame column are densely distributed, and the pump pipe can only penetrate the frame column to a limited depth from the top, there is still a risk of segregation caused by the free fall of concrete, resulting in poor mixing of the bottom concrete and making it prone to root rot.

[0004] Existing technology involves segmented pouring of existing frame columns, but the concrete is poured into the frame column by free fall from the top of the frame column through a pump pipe. This still has the following disadvantages: (1) The pouring height is high, and the concrete is prone to segregation due to the high velocity of free fall to the bottom. (2) The workability of the concrete at the bottom of the frame column is poor, which can easily lead to root rot at the base of the frame column. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a construction method for high-rise frame columns, which solves the problem that the concrete pouring of existing high-rise frame columns easily leads to concrete segregation and root rot at the root.

[0006] The technical solution to achieve the above objectives is: a construction method for high-rise frame columns, comprising the following steps: providing vertical reinforcement and stirrups, and binding the reinforcement structure of the frame column to be constructed with the vertical reinforcement and stirrups; determining the number and location of buffer plates according to the pouring height on the frame column to be constructed; installing buffer plates at the locations where buffer plates are set within the reinforcement structure; installing outer formwork around the perimeter of the reinforcement structure; inserting a pump pipe from above the reinforcement structure to input concrete for pouring, and using the buffer plates to unload the falling concrete and buffer it.

[0007] In the construction method of a high-rise frame column of the present invention, a buffer plate is added inside the frame column to reduce the falling speed of concrete, reduce the momentum of concrete when it reaches the bottom of the frame column, avoid the risk of concrete segregation, prevent concrete root rot, and ensure the construction quality of the frame column.

[0008] A further improvement of the construction method for high-rise frame columns of the present invention is that it further includes: dividing the construction area into sections according to the height of the frame column to be constructed, and pouring the concrete section by section from bottom to top according to the divided sections.

[0009] A further improvement of the construction method of a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the reinforcement structure includes: setting the buffer plates horizontally downward at an angle between the stirrups.

[0010] A further improvement of the construction method of a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the stiffening structure further includes: tilting the buffer plates toward the center of the frame column.

[0011] A further improvement of the construction method for a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the reinforcement structure further includes: setting a hook on the top of the buffer plate and hooking it to the stirrup through the hook.

[0012] A further improvement of the construction method of a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the stiffening structure further includes: staggering the buffer plates vertically.

[0013] A further improvement of the construction method for a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the stiffening structure further includes: setting the lower end of the upper buffer plate directly above the upper surface of the lower buffer plate.

[0014] A further improvement of the construction method for a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the reinforcement structure further includes: connecting the buffer plates to the stirrups with pins according to the U-shaped grooves set at the top and bottom of the buffer plates respectively.

[0015] A further improvement of the construction method for a high-rise frame column of the present invention is that the installation of buffer plates at the positions where buffer plates are set in the reinforcement structure further includes: setting the top of the buffer plate close to the closed stirrup, extending the bottom downward at an angle, and connecting the bottom to the lower layer of stirrup.

[0016] A further improvement of the construction method for a high-rise frame column of the present invention is that the steps of installing an outer formwork on the outer periphery of the reinforcing structure, inserting a pump pipe from above the reinforcing structure, inputting concrete for pouring, and using the buffer plate to unload the falling concrete for buffering include: pre-pouring a buffer layer at the bottom of the frame column before pouring the concrete. Attached Figure Description

[0017] Figure 1 This is a schematic flowchart of a construction method for a high-rise frame column according to the present invention.

[0018] Figure 2This is another schematic diagram of the construction method for a high-rise frame column according to the present invention.

[0019] Figure 3 This is a flowchart illustrating step S130 of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection of the buffer plate of the present invention.

[0021] Figure 5 This is another flowchart illustrating step S130 of the present invention.

[0022] Figure 6 This is another flowchart illustrating step S130 of the present invention.

[0023] Figure 7 This is a cross-sectional view of the buffer plate of the present invention.

[0024] Figure 8 This is another flowchart illustrating step S130 of the present invention.

[0025] Figure 9 This is a top view illustrating the connection of the buffer plate of the present invention.

[0026] Figure 10 This is another flowchart illustrating step S130 of the present invention.

[0027] Figure 11 This is another flowchart illustrating step S130 of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the buffer plate of the present invention.

[0029] Figure 13 This is another flowchart illustrating step S130 of the present invention.

[0030] Figure 14 This is a flowchart illustrating step S140 of the present invention.

[0031] In the diagram: 10. Vertical reinforcement; 11. Stirrup; 111. Closed stirrup; 12. Buffer plate; 121. U-shaped groove; 13. Pin; 14. Right-angle hanging plate. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] See Figure 1 , Figure 1 A flowchart illustrating a construction method for high-rise frame columns according to the present invention is shown. The present invention provides a construction method for high-rise frame columns, comprising the following steps: Step S110: Provide vertical bars 10 and stirrups 11, and use vertical bars 10 and stirrups 11 to tie the reinforcement structure of the frame column to be constructed.

[0034] In this process, the bottom of the vertical reinforcement 10 is connected to the pre-embedded reinforcement in the ground. The vertical reinforcement 10 is arranged around the reserved area of ​​the frame column and is set vertically at intervals. The stirrups 11 are set horizontally and connected between the vertical reinforcement 10. The outermost periphery of the vertical reinforcement 10 is fitted with closed stirrups 111 to form an integral reinforcement structure. The size and number of stirrups 11 are set according to the number and spacing of the vertical reinforcement 10, and no specific restrictions are imposed here. Then, step S120 is executed.

[0035] Step S120: Based on the pouring height on the frame column to be constructed, set the number and location of the buffer plates 12.

[0036] In this embodiment, the first frame column is set to a pouring height of 6.2m, and the concrete pouring pump pipe can penetrate 0.5m into the frame column. Since the free fall height of the concrete pouring does not exceed 2m, two buffer plates 12 are set at positions 2m and 4m away from the bottom of the frame column, respectively. Then, step S130 is executed.

[0037] Execution step S130: Install buffer plates 12 at the designated positions of the buffer plates within the rib structure.

[0038] The buffer plate 12 is made of 5mm thick steel plate. The size of the buffer plate 12 is set according to the size of the frame column, and no specific restrictions are made here. Next, step S140 is executed.

[0039] Step S140: Install the outer formwork around the periphery of the reinforced structure, insert the pump pipe from above the reinforced structure, pour concrete, and buffer the falling concrete by using the buffer plate 12 to de-stress it.

[0040] The buffer plate 12 is designed to catch the concrete and relieve the force on the falling concrete, thereby reducing the speed of the falling concrete. This reduces the momentum of the concrete when it reaches the bottom of the frame column, prevents concrete segregation, and effectively prevents the concrete from rotting at the base.

[0041] See Figure 2 The diagram shows a flowchart of step S110 of the present invention. The present invention provides a construction method for high-rise frame columns, further comprising: Step S101: Divide the construction area into sections according to the height of the frame columns to be constructed, and pour the concrete section by section from bottom to top according to the divided sections.

[0042] The high-rise frame columns are constructed in sections, and the reinforcing bars at the joints between the sections must not be broken and must remain continuous. When pouring the upper section of the frame column, the vibrator should penetrate 10-15cm below the construction joint of the lower section of the frame column to ensure that the concrete of the upper and lower sections of the frame column is tightly bonded. Moreover, the pouring interval between the upper and lower sections of the frame column should be after the initial setting and before the final setting of the concrete (usually 4-12 hours) to avoid the formation of "cold joints". If it exceeds 24 hours, it should be treated as a cold joint.

[0043] See Figure 3 and Figure 4 , Figure 3 A flowchart illustrating step S130 of the present invention is shown. The present invention provides a construction method for high-rise frame columns, wherein step S130 includes: Step S131: The buffer plate 12 is horizontally tilted downwards and placed between the stirrups 11.

[0044] Among them, the buffer plate 12 is set to tilt downward at about 30°.

[0045] See Figure 5 This diagram illustrates another flow chart of step S130 of the present invention. The present invention provides a construction method for high-rise frame columns, wherein step S130 further includes: Execute step S132: tilt the buffer plate 12 toward the center of the frame column.

[0046] The upper and lower buffer plates 12 are arranged opposite each other, and both buffer plates 12 are inclined toward the center of the frame column. When pouring concrete for the frame column, the material is poured from the outer perimeter to the inner side to ensure the uniformity of the material. The buffer plates 12 are inclined toward the center of the frame column to reduce the falling speed of the concrete and avoid creating hollows that may affect construction.

[0047] See Figure 6 and Figure 7 , Figure 6 Another flowchart of step S130 of the present invention is shown. Figure 7 A cross-sectional view of the buffer plate of the present invention is shown. The present invention provides a construction method for a high-rise frame column, wherein step S130 further includes: Step S133: Install a hanger on the top of the buffer plate 12 and connect it to the stirrup 11 through the hanger.

[0048] Among them, a right-angle hanging plate 14 is set on the top of the buffer plate 12 for hanging on the position of the frame column stirrup 11.

[0049] See Figure 4 , Figure 8 and Figure 9 , Figure 4 A connection diagram of the buffer plate of the present invention is shown. Figure 8Another flowchart of step S130 of the present invention is shown. Figure 9 A top view illustrating the connection of the buffer plate of the present invention is shown. The present invention provides a construction method for a high-rise frame column, wherein step S130 further includes: Execute step S134: Set the buffer plates 12 alternately vertically.

[0050] The buffer plates 12 are staggered on the same facade within the reinforced structure, so that the concrete is unloaded layer by layer from top to bottom by the buffer plates 12, thereby reducing the falling speed of the concrete, reducing the momentum of the concrete when it reaches the bottom of the frame column, and avoiding the risk of concrete segregation.

[0051] See Figure 4 , Figure 9 and Figure 10 , Figure 4 A connection diagram of the buffer plate of the present invention is shown. Figure 9 A top view showing the connection schematic of the buffer plate of the present invention is shown. Figure 10 Another flowchart of step S130 of the present invention is shown. The present invention provides a construction method for high-rise frame columns, wherein step S130 further includes: Step S135: Position the lower end of the upper buffer plate 12 near the center of the upper surface of the lower buffer plate 12.

[0052] By placing the lower end of the upper buffer plate 12 near the center of the upper surface of the lower buffer plate 12, it is possible to ensure that the concrete falls from the lower end of the upper buffer plate 12 and is received by the upper surface of the lower buffer plate 12. This can gradually reduce the force, decrease the falling speed of the concrete, reduce the momentum of the concrete when it reaches the bottom of the frame column, and avoid the risk of concrete segregation.

[0053] See Figure 11 and Figure 12 , Figure 11 Another flowchart of step S130 of the present invention is shown. Figure 12 A schematic diagram of the buffer plate of the present invention is shown. The present invention provides a construction method for a high-rise frame column, wherein step S130 further includes: Step S136: Connect the buffer plate 12 and the stirrup 11 with pins 13 according to the U-shaped grooves 121 set at the top and bottom of the buffer plate 12 respectively.

[0054] The pin 13 is connected to the U-shaped groove 121, and the pin 13 is used to connect the buffer plate 12 and the stirrup 11 to prevent the concrete baffle from falling off during the pouring process because it cannot withstand the impact of the concrete.

[0055] See Figure 4 , Figure 9 and Figure 13 , Figure 4A connection diagram of the buffer plate of the present invention is shown. Figure 9 A top view showing the connection schematic of the buffer plate of the present invention is shown. Figure 13 Another flowchart of step S130 of the present invention is shown. The present invention provides a construction method for high-rise frame columns, wherein step S130 further includes: Step S137: Set the top of the buffer plate 12 close to the closed stirrup 111, extend the bottom downwards at an angle, and connect the bottom to the lower stirrup 11.

[0056] The buffer plate 12 spans four stirrups 11 laterally and is positioned in the middle of the frame column. The top of the buffer plate 12 is close to the closed stirrup 111 and is spaced one stirrup away from the closed stirrup 111. The buffer plate 12 spans two rows of stirrups 11 longitudinally and is connected to the lower stirrup 11 at the bottom.

[0057] See Figure 14 The diagram shows a flow chart of step S140 of the present invention. The present invention provides a construction method for high-rise frame columns, wherein step S140 includes: Perform step S141: Before pouring concrete, pre-pour a buffer layer at the bottom of the frame column.

[0058] Before pouring concrete, a thick layer of cement mortar is pre-poured at the bottom of the frame column using a pump pipe to form a buffer layer, which buffers the concrete poured in above. The thick cement mortar buffer layer reduces the risk of segregation and ensures good adhesion between the buffer layer and the concrete, effectively preventing root rot in the frame column.

[0059] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A construction method for high-rise frame columns, characterized in that, Includes the following steps: Provide vertical bars and stirrups, and use the vertical bars and stirrups to tie the reinforcement structure of the frame column to be constructed; The number and location of the buffer plates are determined based on the pouring height on the frame columns to be constructed. Buffer plates are installed at the designated locations within the rib structure. An outer formwork is installed around the periphery of the reinforcing structure, a pump pipe is inserted from above the reinforcing structure, concrete is poured in, and the falling concrete is buffered by the buffer plate.

2. The construction method for a high-rise frame column according to claim 1, characterized in that, Also includes: The construction area is divided according to the height of the frame columns to be constructed, and the concrete is poured section by section from bottom to top according to the divided sections.

3. The construction method for a high-rise frame column according to claim 1, characterized in that, Installing buffer plates at the locations where buffer plates are set within the rib structure includes: The buffer plate is horizontally tilted downwards and positioned between the stirrups.

4. The construction method for a high-rise frame column according to claim 3, characterized in that, The method of installing buffer plates at the positions where buffer plates are set within the rib structure further includes: The buffer plate is tilted toward the center of the frame column.

5. A construction method for a high-rise frame column according to claim 3, characterized in that, The method of installing buffer plates at the positions where buffer plates are set within the rib structure further includes: The buffer plate is tilted toward the center of the frame column.

6. The construction method for a high-rise frame column according to claim 1, characterized in that, The method of installing buffer plates at the positions where buffer plates are set within the rib structure further includes: The buffer plates are arranged alternately, one above the other.

7. A construction method for a high-rise frame column according to claim 6, characterized in that, The method of installing buffer plates at the positions where buffer plates are set within the rib structure further includes: The lower end of the upper buffer plate is positioned near the center of the upper surface of the lower buffer plate.

8. A construction method for a high-rise frame column according to claim 1, characterized in that, The installation of buffer plates at the positions where buffer plates are set on the frame columns further includes: The buffer plate is connected to the stirrup with pins according to the U-shaped grooves provided at the top and bottom of the buffer plate.

9. A construction method for a high-rise frame column according to claim 8, characterized in that, The installation of buffer plates at the positions where buffer plates are set on the frame columns further includes: The top of the buffer plate is positioned close to the closed stirrup, the bottom extends downward at an angle, and the bottom is connected to the lower stirrup.

10. A construction method for a high-rise frame column according to claim 1, characterized in that, The steps of installing an outer formwork around the periphery of the reinforcing structure, inserting a pump pipe from above the reinforcing structure, inputting concrete for pouring, and using the buffer plate to cushion the falling concrete include: Before pouring concrete, a buffer layer is pre-poured at the bottom of the frame column.

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