Oblique grid steel pipe outer frame node hoisting construction method

Abstract

The application discloses a kind of oblique grid steel pipe outer frame node hoisting construction method, first, node model is made according to 1:1 proportion, the weight of node model is not greater than 5Kg;Again, the upper port of the steel pipe that has been installed and has not been poured concrete is butt-jointed using node model, whether the position of node model is measured within the allowable range, if the installation position of node model exceeds the allowable range, then adjust the position of steel pipe;Then, remove node model, pour concrete into steel pipe;Again, use crane to hoist outer frame node to the upper of steel pipe, manually assisted to lower outer frame node and butt-joint the upper port of steel pipe to the lower connecting end of outer frame node;After that, outer frame node is installed on the frame beam of floor, then outer frame node and steel pipe are welded and fixed;Finally, pour concrete into outer frame node.The application has the effect of improving the installation precision of outer frame node.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a diagonal grid steel pipe outer frame node hoisting construction method. BACKGROUND

[0002] The building tower adopts a double lateral force resisting system composed of a concrete core tube and a peripheral diagonal grid frame structure. The lateral stiffness of the concrete core tube is greater than that of the peripheral frame, and it bears most of the shear force generated under wind load and seismic action. The diagonal grid frame further improves the lateral force resistance of the entire building, and the seismic capacity of the high-rise building is improved through the double lateral force resisting system. The existing diagonal grid frame structure includes a steel pipe concrete column, an outer frame node and an H-shaped bending frame beam arranged at the node floor. Due to the design requirements of the structure form of the diagonal grid frame structure itself, the upper and lower two connecting ends of each outer frame node need to be connected to two lower steel pipe concrete columns and two upper steel pipe concrete columns. In actual construction, two steel pipes below the outer frame node are generally installed first, then concrete is poured into the steel pipes, and then the outer frame node is connected. However, due to the installation accuracy of the steel pipe, errors are easily caused in the pouring and forming of the steel pipe concrete column. Since the steel pipe concrete column cannot be adjusted after the error occurs, on the one hand, the position of the outer frame node after installation exceeds the original design allowable error range, causing difficulties in the installation of subsequent components. On the other hand, due to the large weight of the outer frame node, it is easy to cause difficulties or inability to install the outer frame node itself and the steel pipe support during hoisting and installation. SUMMARY

[0003] The present application solves the problems of the prior art and provides a diagonal grid steel pipe outer frame node hoisting construction method for improving the installation accuracy of the outer frame node.

[0004] To achieve the above-mentioned purpose, the present application first proposes a diagonal grid steel pipe outer frame node hoisting construction method, which includes the following specific steps:

[0005] S1, according to the designed outer frame node as a sample, a node model is made in a 1:1 ratio, and the weight of the node model is not greater than 5Kg;

[0006] S2, using the node model to connect the upper end of the steel pipe which has been installed and not poured with concrete, specifically, aligning the multiple lower connecting ends of the node model with the upper end of the corresponding multiple steel pipes of the outer frame node, then measuring whether the error between the lower connecting end of the node model and the upper end of the corresponding steel pipe is within the allowable range; if it exceeds the allowable range, adjust the position of the steel pipe until the error between the lower connecting end of the node model and the upper end of the corresponding steel pipe is within the allowable range;

[0007] S3, remove the node model, protect the inner wall and outer wall of the upper port of the steel pipe, then put the steel cage into the steel pipe and pour concrete;

[0008] S4, after the strength of the concrete in the steel pipe reaches the requirement, remove the protection at the upper port of the steel pipe.

[0009] S5, use a crane to hoist the outer frame node above the steel pipe, manually assist in lowering the outer frame node, and butt the lower connecting end of the outer frame node to the upper port of the steel pipe, the crane keeps pulling the outer frame node, then the outer frame node is fixedly connected to the frame beam of the floor, and the outer frame node and the steel pipe are welded and fixed;

[0010] S6, protect the inner wall and outer wall of the upper port of the outer frame node, and then pour concrete into the outer frame node.

[0011] By using the node model made according to the ratio of 1:1, the worker can test whether the outer frame node can be correctly butted and installed by holding the node model before the steel pipe is poured with concrete. Since the steel pipe has not been poured with concrete at this time, the position of the steel pipe can be adjusted under the action of external force. Therefore, if the installation position of the node model exceeds the allowable range, the position of the steel pipe is adjusted, and then the concrete is poured into the steel pipe. The strength of the steel pipe can be improved after the concrete is set, so that the position of the steel pipe is stable. Therefore, the outer frame node can be smoothly connected to the steel pipe at the correct position, and the installation precision of the outer frame node is improved.

[0012] In the embodiment, after the position of the steel pipe is adjusted in step S2, the position corresponding to the node model at this time is marked on the frame beam of the floor. In step S5, the outer frame node is positioned by the mark on the corresponding frame beam when the outer frame node is lowered. In this way, the accurate installation position is found in step S2 by using the node model, and the position is marked on the frame beam. The position accuracy is ensured during the subsequent installation of the outer frame node, and the installation precision of the outer frame node is improved.

[0013] In the embodiment, the isolation film is used to protect the inner wall and outer wall of the upper port of the steel pipe and the inner wall and outer wall of the upper port of the outer frame node. The isolation film protects the upper port of the steel pipe and the outer frame node, so that the concrete does not interfere with the welding of the steel pipe and the outer frame node.

[0014] In the embodiment, in step S3, the method for pouring concrete into the steel pipe is as follows: first, pouring concrete into the steel pipe to a position 20-30 cm away from the upper end of the steel pipe, then hoisting the reinforcement cage into the steel pipe, the diameter of the reinforcement cage being half of the inner diameter of the steel pipe, one end of the reinforcement cage extending 10-20 cm out of the steel pipe, and then continuing to pour concrete into the steel pipe until the position 20-30 cm away from the upper end of the steel pipe. With the above technical solution, the pouring of concrete into the steel pipe is stopped at the position 20-30 cm away from the upper end of the steel pipe, so that the joint of the concrete is staggered with the welding seam, and the strength of the outer frame is improved, and the concrete is away from the upper end by a certain distance, so that the adhesion of the concrete to the upper end is reduced, and the interference of the concrete with the steel pipe and the outer frame node is reduced.

[0015] In the embodiment, the upper end of the steel pipe is connected with the reinforcement cage by the support rod and the cushion block, so that the position of the reinforcement cage in the steel pipe is stable.

[0016] In the embodiment, in step S5, during the lowering of the outer frame node, the reinforcement cage extending out of the steel pipe is sleeved in the outer frame node. Since there is a welding seam at the connection between the outer frame node and the steel pipe, cracks may occur when the outer frame node is subjected to external force. The extension of the reinforcement cage into the outer frame node can improve the strength of the concrete at the connection between the outer frame node and the steel pipe, so as to improve the strength of the connection between the outer frame node and the steel pipe and reduce the probability of cracking of the welding seam.

[0017] In the embodiment, in step S6, when pouring concrete into the outer frame node, the concrete is poured from one of the upper ends of the outer frame node, and the poured concrete flows to the other side of the outer frame node through the middle channel of the outer frame node, and the air in the middle channel of the outer frame node is discharged. With the above technical solution, the concrete is poured from one of the upper ends of the outer frame node, and the concrete automatically overflows to the other side of the outer frame node through the middle channel, so that the air in the middle channel of the outer frame node is discharged, and the generation of bubbles in the concrete in the outer frame node is reduced.

[0018] In the embodiment, the poured concrete is 10-20 cm away from the upper end of the outer frame node.

[0019] In the embodiment, the position of the steel pipe is adjusted by the adjusting device in step S2, the adjusting device comprises a first connecting sleeve, a second connecting sleeve and a screw rod, the middle part of the screw rod is fixed with a hexagon nut, the screw rod is provided with threads in opposite directions on both sides of the hexagon nut, the first connecting sleeve and the second connecting sleeve are both composed of a first half ring, a second half ring and a sleeve, one end of the first half ring and the second half ring is hinged, and the other end is connected by a bolt, the sleeve is fixed on the first half ring or the second half ring in the radial direction, the first connecting sleeve and the second connecting sleeve are respectively connected on the two threads of the screw rod through the sleeve threads, the inner diameter of the first half ring and the second half ring enclosed by the first half ring and the second half ring matches the outer diameter of the steel pipe, and the inner side of the first half ring and the second half ring is provided with a buffer layer. In use, the first connecting sleeve and the second connecting sleeve are connected with two steel pipes respectively, the first connecting sleeve and the second connecting sleeve are pushed or pulled to move by rotating the screw rod, so that the position of the steel pipe is adjusted; when the position of the steel pipe is adjusted by the adjusting device, first, the position of one of the steel pipes is adjusted to the correct position aligned with the lower connecting end of the corresponding node model, then the node model is removed, and the steel pipe with the correct position is poured with concrete; after the strength of the concrete meets the requirements, the node model is installed to the original correct position, and then the position of the other steel pipe is adjusted to the correct position by the adjusting device.

[0020] In summary, the node model is made in a ratio of 1:1, before the steel pipe is poured with concrete, the worker can hold the node model to test whether the outer frame node can be correctly docked and installed, since the steel pipe has not been poured with concrete at this time, the position of the steel pipe can be adjusted under external force, therefore, if the installation position of the node model exceeds the allowed range, the position of the steel pipe is adjusted, then the steel pipe is poured with concrete, and the strength of the steel pipe can be improved after the concrete is solidified, so that the position of the steel pipe is stable, and the outer frame node can not be docked with the steel pipe or the installation position is deviated during subsequent hoisting of the outer frame node, the installation precision and efficiency of the outer frame node are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the diagonal grid steel pipe outer frame of the application.

[0022] Figure 2 is a construction schematic diagram of the node model of the application.

[0023] Figure 3 is a structural schematic diagram of the adjusting device of the application.

[0024] In the drawings, 1, outer frame node; 2, steel pipe; 3, node model; 41, screw rod; 42, first connecting sleeve; 43, second connecting sleeve; 44, hexagon nut; 421, first half ring; 422, second half ring; 423, sleeve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0026] In addition, the technical solutions among the various embodiments of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize the combination. When the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0027] With reference to Figure 1 and Figure 2 A diagonal grid steel pipe outer frame node hoisting construction method, specifically comprising the following steps:

[0028] S1, according to the designed outer frame node 1 as a sample, make node model 3 according to 1:1 scale, node model 3 is made of light material, such as: hard plastic, the weight of node model 3 is not more than 5Kg, preferably the weight of node model 3 is 2Kg, convenient to take and put down. The number of node models 3 is determined according to the actual construction condition, which ensures to meet the construction efficiency requirement and ensures that each node model 3 in use has a replacement node model 3.

[0029] S2, using node model 3 to butt joint the upper end of the steel pipe 2 which has been installed and not poured concrete, specifically, aligning the two lower connecting ends of node model 3 with the upper end of the two steel pipes 2 of outer frame node 1 respectively, then measuring whether the error between the lower connecting end of node model 3 and the upper end of the corresponding steel pipe 2 is within the allowable range;

[0030] If it is beyond the allowable range, adjust the position of the steel pipe 2 until the error between the lower connecting end of node model 3 and the upper end of the corresponding steel pipe 2 is within the allowable range, and then mark the position corresponding to node model 3 on the frame beam of the floor at this time.

[0031] S3, remove node model 3, wrap the inner wall and outer wall of the upper end of steel pipe 2 with isolation film, which can prevent concrete from adhering to the upper end of steel pipe 2 and interfering with the welding of steel pipe 2 and outer frame node 1, then put steel reinforcement cage into steel pipe 2 and pour concrete.

[0032] The method for pouring concrete into the steel pipe 2 is to first pour concrete to a position 40-50 cm away from the upper port 40 of the steel pipe 2, and then hoist the reinforcement cage into the steel pipe 2, the diameter of the reinforcement cage is half of the inner diameter of the steel pipe 2, and one end of the reinforcement cage extends to 10-20 cm outside the steel pipe 2, so that the reinforcement cages extending out of the two steel pipes 2 can be conveniently sleeved into the two lower connecting ends of the outer frame node 1 during subsequent installation of the outer frame node 1.

[0033] The reinforcement cage is connected to the upper port of the steel pipe 2 by using a support rod and a cushion block, so that the position of the reinforcement cage in the steel pipe 2 is stable, and then the pouring of concrete is continued to a position 20-30 cm away from the upper port of the steel pipe 2, and the pouring of concrete is stopped, and the poured concrete wraps the reinforcement cage.

[0034] S4, after the strength of the concrete in the steel pipe 2 reaches the requirement, the isolation film, the support rod and the cushion block at the upper port of the steel pipe 2 are removed.

[0035] S5, then use a crane to hoist the outer frame node 1 to the upper side of the steel pipe 2, and then manually assist in lowering the outer frame node 1, and abutting the lower connecting end of the outer frame node 1 to the upper port of the steel pipe 2, the reinforcement extending out of the steel pipe 2 needs to be sleeved during the lowering of the outer frame node 1, and the outer frame node 1 is positioned by the marks on the corresponding frame beams during the lowering of the outer frame node 1,

[0036] The crane keeps pulling the outer frame node 1, and the worker holds the outer frame node 1 to keep the outer frame node 1 stable, and then the outer frame node 1 is fixedly connected to the frame beam of the floor, so that the outer frame node 1 is stable and no longer shakes, and then the outer frame node 1 and the steel pipe 2 are welded and fixed.

[0037] S6, use an isolation film to wrap the inner wall and the outer wall of the upper port of the outer frame node 1, the isolation film can block the concrete from adhering to the upper port of the outer frame node 1 to interfere with the welding of the steel pipe 2 and the outer frame node 1, and then pour concrete into the outer frame node 1. When pouring concrete into the outer frame node 1, concrete is poured from one of the upper ports of the outer frame node 1, and pouring concrete from both upper ports of the outer frame node 1 is prohibited, the poured concrete flows to the other side of the outer frame node 1 through the middle channel of the outer frame node 1, the air in the middle channel of the outer frame node 1 is discharged, and the situation of bubbles generated in the concrete in the outer frame node 1 is reduced.

[0038] The method for pouring concrete into the outer frame node 1 is as follows: first, pour the concrete to a position 30 cm away from the upper port of the outer frame node 1, then hoist the reinforcement cage into the outer frame node 1, the lower end of the reinforcement cage extends 10-20 cm into the outer frame node 1, the reinforcement cage is connected to the upper port of the outer frame node 1 by using the support rod and the cushion block to stabilize the position of the reinforcement cage, then continue to pour the concrete to a position 10-20 cm away from the upper port of the outer frame node 1 to stop pouring, the poured concrete fills the upper end of the steel pipe 2 and wraps the upper end of the reinforcement cage extending into the steel pipe 2, and also wraps the lower end of the reinforcement cage extending out of the upper port of the outer frame node 1.

[0039] The method for adjusting the position of the steel pipe 2 is as follows: the node model 3 is fixedly installed on the designed installation position of the frame beam of the floor by using the bolt or the steel wire rope, then the position of the steel pipe 2 is adjusted by using the adjusting device, so that the upper port of the steel pipe 2 is aligned with the lower connecting end of the corresponding node model 3. Referring to Figure 3 , the adjusting device includes a first connecting sleeve 42, a second connecting sleeve 43 and a screw rod 41, the two ends of the screw rod 41 have opposite threads, the two ends of the screw rod 41 are threadedly connected with the first connecting sleeve 42 and the second connecting sleeve 43 respectively, the middle part of the screw rod 41 is provided with a hexagonal nut 44, and the wrench sleeve is put into the hexagonal nut 44, so that the screw rod 41 can be rotated by using the wrench. The first connecting sleeve 42 and the second connecting sleeve 43 each include a first half ring 421, a second half ring 422 and a sleeve 423, one end of the first half ring 421 is hingedly connected with one end of the second half ring 422, the other end of the first half ring 421 and the other end of the second half ring 422 are fixedly connected by using the bolt and the nut, one end of the sleeve 423 is hingedly connected with the first half ring 421, and the other end of the sleeve 423 is threadedly connected with the screw rod 41. The inner walls of the first half ring 421 and the second half ring 422 are each provided with a buffer layer to avoid scratching the steel pipe 2. During installation, the first half ring 421 and the second half ring 422 are sleeved on the steel pipe 2, and then the first half ring 421 and the second half ring 422 are fixedly connected by using the bolt and the nut, so that the steel pipe 2 can be sleeved, the first connecting sleeve 42 and the second connecting sleeve 43 are connected with two steel pipes 2 respectively, and then the length of the screw rod 41 is adjusted by rotating the screw rod 41, so that the spacing and the position of the two steel pipes 2 can be adjusted, and if one of the steel pipes 2 remains stationary after pouring the concrete, the position of the other steel pipe 2 can be adjusted. Since the position of the steel pipe 2 is measured by using the measuring instrument during installation, the position deviation of the steel pipe 2 will be small, and the position deviation of the steel pipe 2 that needs to be adjusted will be small, therefore, the position adjustment of the steel pipe 2 can be realized by using the adjusting device. The above device is mainly used for adjusting the deviation of less than 1 cm, and if the position deviation of the steel pipe 2 is greater than 1 cm, a driving device such as a winch needs to be used to adjust the position of the steel pipe 2.

[0040] The adjusting device adjusts the two steel pipes 2 in the following specific method: before the node model 3 is fixed, it is judged whether one of the two lower connecting ends of the node model 3 can be connected with one of the steel pipes 2; if one of the two lower connecting ends of the node model 3 can be connected with one of the steel pipes 2, the node model 3 is first removed, then the steel pipe 2 connected with the lower connecting end of the node model 3 is poured with concrete, after the strength of the concrete meets the requirement, the node model 3 is fixed to the installation position and one of the lower connecting ends of the node model 3 is connected with the upper end of the steel pipe 2 poured with the concrete, then the adjusting device is used to adjust the two steel pipes 2, the position of the other steel pipe 2 is adjusted by changing the length of the adjusting device so that the upper end of the other steel pipe 2 is connected with the other lower connecting end of the node model 3, finally the node model 3 is removed and the other steel pipe 2 is also poured with the concrete.

[0041] If both of the lower connecting ends of the node model 3 cannot be connected with the two steel pipes 2, the adjusting device is used to adjust the two steel pipes 2, the position of one of the steel pipes 2 is adjusted to the correct position of the lower connecting end of the corresponding node model 3 by changing the length of the adjusting device, then the node model 3 is removed and the steel pipe 2 in the correct position is poured with the concrete; after the strength of the concrete meets the requirement, the node model 3 is installed to the original installation position, then the position of the other steel pipe 2 is adjusted to the position of the lower connecting end of the corresponding node model 3 by changing the length of the adjusting device, and the other steel pipe 2 is also poured with the concrete. Since the steel pipe 2 poured with the concrete is difficult to deform, when the other steel pipe 2 is adjusted by using the steel pipe 2 poured with the concrete as the support, the steel pipe 2 poured with the concrete can be kept in the correct position of the lower connecting end of the node model 3. After the outer frame node 1 and the steel pipes 2 are welded, the adjusting device can be removed.

[0042] In the embodiment, the outer frame node 1 is a saddle type (here, the saddle type refers to a left-right symmetrical structure in which two symmetrical arc pipes are connected by a straight pipe in the middle, and the openings of the arc pipes are arranged in opposite directions), the outer frame node 1 is provided with two upper connecting ends and two lower connecting ends for connecting with the steel pipes, the inner part of the outer frame node 1 is provided with a cavity, the upper connecting ends and the lower connecting ends are communicated with each other, when installed, the two lower connecting ends of the outer frame node 1 are connected with two lower steel pipes 2, then the upper steel pipes are installed and the two upper steel pipes are connected with the two upper connecting ends of the outer frame node 1.

[0043] The implementation principle of the present application is that a node model 3 is made in a ratio of 1:1, before the steel pipe 2 is poured with concrete, workers can hold the node model 3 to test whether the outer frame node 1 can be correctly docked and installed, through the docking of the node model 3 and the steel pipe 2, the installation position of the node model 3 is determined and marked by line, and the subsequent hoisting of the outer frame node 1 can be positioned by the line marking, which is convenient and high in precision. And because the steel pipe 2 can adjust the position under the action of external force before being poured with concrete, if the installation position of the node model 3 exceeds the allowed range, the position of the steel pipe 2 can be adjusted, and then the concrete is poured into the steel pipe 2, the strength of the steel pipe 2 can be improved after the concrete is solidified, so that the position of the steel pipe 2 is stable, and the subsequent hoisting of the outer frame node 1 will not cause the docking of the steel pipe 2 or the installation position deviation, thereby improving the installation precision and efficiency of the outer frame node 1.

[0044] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent transformation made by the present application specification and drawings, or direct / indirect application in other related technical fields within the concept of the present application are included in the patent protection scope of the present application.

Claims

1. A method for hoisting and constructing the nodes of an external frame made of obliquely intersecting steel pipes, characterized in that, The specific steps include the following: S1. Based on the designed outer frame nodes as samples, make node models at a 1:1 scale. The weight of the node models should not exceed 5Kg. S2. Use the node model to connect the upper ends of the installed but unconcrete-poured steel pipes. Specifically, align the multiple lower connection ends of the node model with the upper ends of the corresponding multiple steel pipes of the outer frame node, and then measure whether the error between the lower connection ends of the node model and the corresponding upper ends of the steel pipes is within the allowable range. If it exceeds the allowable range, adjust the position of the steel pipes until the error between the lower connection ends of the node model and the corresponding upper ends of the steel pipes is within the allowable range. S3. Remove the node model, protect the inner and outer walls of the upper end of the steel pipe, then put the steel cage into the steel pipe and pour concrete. S4. After the concrete inside the steel pipe reaches the required strength, remove the protection at the upper end of the steel pipe. S5. Use a crane to lift the outer frame node above the steel pipe, manually lower the outer frame node, and connect the lower connection end of the outer frame node to the upper end of the steel pipe. The crane maintains the tension of the outer frame node, and then fixes the outer frame node to the frame beam of the floor. Finally, weld the outer frame node and the steel pipe to fix it. S6. Protect the inner and outer walls of the upper port of the outer frame node, and then pour concrete into the outer frame node.

2. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 1, characterized in that: In step S2, after adjusting the position of the steel pipe, mark the position on the frame beam of the floor corresponding to the node model at this time.

3. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 2, characterized in that: In step S5, when the outer frame node is lowered, the outer frame node is positioned by means of the markings on the corresponding frame beam.

4. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 1, characterized in that: An isolation membrane is used to protect the inner and outer walls of the upper port of the steel pipe and the inner and outer walls of the upper port of the outer frame node.

5. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 1, characterized in that: In step S3, the method for pouring concrete into the steel pipe is as follows: first, pour concrete to a distance of not less than 20-30cm from the upper end of the steel pipe, and then lower the reinforcing cage. The diameter of the reinforcing cage is half the inner diameter of the steel pipe, and one end of the reinforcing cage extends 10-20cm outside the steel pipe. Then, continue pouring concrete to a position 20-30cm from the upper end of the steel pipe and then stop pouring.

6. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 5, characterized in that: The steel reinforcement cage is connected to the upper end of the steel pipe using struts and pads, which makes the position of the steel reinforcement cage stable in the steel pipe.

7. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 5, characterized in that: In step S5, during the lowering of the outer frame node, the outer frame node will be fitted inside the steel reinforcement cage extending from the steel pipe.

8. The method for hoisting and constructing the external frame node of the oblique grid steel pipe according to claim 1, characterized in that: In step S6, when pouring concrete into the outer frame node, the concrete is poured from one of the upper ports of the outer frame node. The poured concrete flows through the middle channel of the outer frame node to the other side of the outer frame node, thus expelling the air from the middle channel of the outer frame node.

9. The method for hoisting and constructing the external frame node of the oblique mesh steel pipe according to claim 8, characterized in that: The concrete poured from the upper port of the outer frame node into the outer frame node is 10-20cm away from the upper port of the outer frame node.

10. A method for hoisting and constructing an external frame node of a diagonal grid steel pipe according to any one of claims 1 to 9, characterized in that: In step S2, an adjusting device is used to adjust the position of the steel pipe. The adjusting device includes a first connecting sleeve, a second connecting sleeve, and a screw. A hexagonal nut is fixed in the middle of the screw. The screw has threads in opposite directions on both sides of the hexagonal nut. The first and second connecting sleeves are each composed of a first half-ring, a second half-ring, and a sleeve. One end of the first and second half-rings is hinged, and the other end is connected by bolts. The sleeve is fixed radially on the first or second half-ring. The first and second connecting sleeves are respectively connected to the two sections of the screw thread through the sleeve thread. The inner diameter of the first and second half-rings matches the outer diameter of the steel pipe. A buffer layer is provided on the inner side of the first and second half-rings.

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