Construction method of jack post

Abstract

The application provides a construction method of beam and column pulling, comprising the following steps: setting an unloading assembly supported on the bottom of a frame beam, setting a underpinning area on a support column to be pulled out, supporting a load guiding assembly in the underpinning area, supporting the load guiding assembly through a load assembly, applying the load of the frame beam on the support column to be pulled out on the load assembly, and then removing the unloading assembly, so as to reinforce the frame beam, and then chiseling the support column to be pulled out. When the beam and column pulling is performed by using the construction method, the unloading assembly supported on the bottom of the frame beam is removed before the frame beam is reinforced, the unloading assembly does not occupy the space under the frame beam, a larger construction space is provided for the subsequent reinforcement of the frame beam, the reinforced beam can be formed at one time, the frame beam does not need to be reinforced in sections, and the construction efficiency of the reinforcement of the frame beam is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building maintenance, in particular to a construction method for beam and column pulling. BACKGROUND

[0002] In recent years, the development of the construction industry has shifted from large-scale new construction to a period of equal emphasis on new construction and maintenance and renovation. Therefore, buildings are increasingly facing the problem of renovation and reinforcement, such as changing the use of the building or increasing the indoor space. Beam and column pulling, as a technical method, is widely used in engineering practice because it can effectively solve the problem of expanding column spacing. Beam and column pulling is a general term for beam and column pulling, beam and wall removal, and beam and column pulling. It is a special technique that removes part or all of the load-bearing columns or walls without dismantling or with minimal dismantling of the upper structure.

[0003] Traditional beam and column pulling methods require the erection of full support, and subsequent reinforcement requires a second modification. The existing beam and column pulling construction device does not solve the problem of the need for a second modification for subsequent reinforcement, and some devices are large and complex, requiring a large overall investment.

[0004] Although some existing beam and column pulling construction devices have solved the technical problems of long construction period, high cost, large construction period, and impact on the normal use of the original structure, they have not solved the problem of the need for a second modification for subsequent frame beam reinforcement.

[0005] For example, the patent document with the publication number CN217151380U discloses a beam and column pulling construction device, which includes an unloading assembly for supporting the frame beam and a bearing assembly for supporting the column to be removed. A circle of replacement area is chiseled between the column to be removed and the lower part of the frame beam. The bearing assembly is installed in the replacement area and arranged around the column to be removed. The unloading assembly is located between the lower part of the frame beam and the ground. The number of unloading assemblies is equal to the number of frame beams, and the unloading assemblies and frame beams are distributed one-to-one. Because the multiple unloading assemblies distributed one-to-one with the frame beams need to be supported at the bottom of the frame beam during the reinforcement of the frame beam, the multiple unloading assemblies will occupy the construction space during the reinforcement of the frame beam. In addition, the erection of the unloading assembly at the bottom of the frame beam will also cause the unloading assembly to be removed after the frame beam is reinforced for a period of time before the reinforcement can continue, which seriously affects the construction efficiency of the frame beam reinforcement process.

[0006] Therefore, in the existing technology, the multiple unloading assemblies supported at the bottom of the frame beam during the reinforcement of the frame beam seriously affect the construction efficiency of the frame beam reinforcement. SUMMARY

[0007] The present application aims to solve the technical problem of the existing technology, in which multiple unloading assemblies are supported at the bottom of the frame beam during the reinforcement of the frame beam, which seriously affects the construction efficiency of the frame beam reinforcement.

[0008] The application provides a construction method of beam and column pulling, comprising the following steps:

[0009] S1, building unloading components: building multiple unloading components under the frame beam on the side of the support column to be pulled out, each unloading component is built at a first preset distance from the support column to be pulled out;

[0010] S2, building load guiding components: chiseling a replacement area at a second preset distance from the frame beam on the upper side wall of the support column to be pulled out, and installing the load guiding component in the replacement area, the upper and lower ends of the load guiding component are respectively abutted on the stepped surface chiseled on the side wall of the support column to be pulled out in the replacement area, and the outer circumferential wall of the load guiding component protrudes from the outer circumferential wall of the support column to be pulled out;

[0011] S3, building load components: uniformly and intervally arranging multiple load components on the side of the support column to be pulled out, and the top end of each load component is abutted on the bottom end of the side edge of the load guiding component;

[0012] S4, removing the unloading components;

[0013] S5, reinforcing the frame beam;

[0014] S6, removing the load guiding components and the load components;

[0015] S7, removing the support column to be pulled out.

[0016] By adopting the technical scheme, the unloading components are built to support the frame beam at the bottom, the replacement area is arranged on the support column to be pulled out, the load guiding component is supported in the replacement area, the load guiding component is supported by the load components, the load applied by the frame beam on the support column to be pulled out can be applied on the load components, at this time, the unloading components can be removed, thereby reinforcing the frame beam, and then the support column to be pulled out can be chiseled out after the frame beam is reinforced.

[0017] Compared with the prior art, the unloading components need to be supported at the bottom of the frame beam during the reinforcement process of the frame beam, which affects the reinforcement construction space of the frame beam, and during the construction process, the unloading components need to be removed after the frame beam is reinforced to the position of the unloading components, then the unloading components are supported at the position after the reinforcement is completed, and the unloading components are removed after the reinforced beam is solidified, that is, the unloading components need to be removed twice during the process of pulling out the beam and column, which seriously affects the construction efficiency of the process of pulling out the beam and column. The construction method provided by the application can remove the unloading components supported at the bottom of the frame beam before reinforcing the frame beam, the unloading components do not occupy the space below the frame beam, which provides a larger construction space for subsequent reinforcement of the frame beam, and the reinforced beam can be reinforced and formed at one time without being segmented, thereby improving the construction efficiency of the reinforcement of the frame beam.

[0018] In addition, the unloading assembly is removed before the frame beam is reinforced, and the end of the unloading assembly is not solidified with the frame beam reinforcement part, so that the unloading assembly cannot be removed. Therefore, the construction method provided by the application can also reduce the construction difficulty.

[0019] In summary, the construction method for supporting beam and column pulling provided by the application can not only improve the construction efficiency of the supporting beam and column pulling, but also reduce the construction difficulty of the supporting beam and column pulling.

[0020] According to another specific embodiment of the application, the construction method for supporting beam and column pulling disclosed by the embodiment of the application, in step S1, the unloading assembly comprises a frame beam jack and a first support member supported on the frame beam jack, the top end of the first support member abuts against the bottom surface of the frame beam; and the first preset distance is 3-7 meters.

[0021] The above technical solution is adopted, and in the implementation process, the unloading assembly is supported at the bottom of the frame beam, and the unloading assembly is arranged at a position 3-7 meters away from the support column to be pulled out, which not only ensures that the unloading assembly has sufficient supporting strength on the frame beam, but also provides more construction space for the subsequent load assembly built around the side of the support column to be pulled out.

[0022] According to another specific embodiment of the application, the construction method for supporting beam and column pulling disclosed by the embodiment of the application, in step S2, the load guide assembly comprises a load guide support part fixed at least partially to the underpinning area, and a load guide frame part fixed to the side of the load guide support part and arranged around the support column to be pulled out; and the second preset distance is greater than or equal to the distance of the space required for the reserved reinforcement work under the frame beam.

[0023] The above technical solution is adopted, and in the implementation process, the second preset distance between the underpinning area and the frame beam in step S2 is set to be greater than or equal to the distance of the space required for the reserved reinforcement work under the frame beam. During the construction of the supporting beam and column pulling, this not only minimizes the damage to the existing frame beam structure to maintain the strength of the existing frame beam structure, but also enables the frame beam to avoid the problem that when the second preset distance between the underpinning area and the frame beam is less than the distance of the space required for the reserved reinforcement work under the frame beam, the position of the underpinning area overlaps with the space required for the reserved reinforcement work, resulting in insufficient space for reinforcing the frame beam above the underpinning area when the frame beam is reinforced to the position of the underpinning area, which affects the integrated reinforcement molding of the frame beam. Therefore, the above solution also provides sufficient construction space for the reinforcement of the frame beam above the underpinning area, facilitates the integrated reinforcement molding of the frame beam, and improves the construction efficiency of the frame beam reinforcement.

[0024] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a construction method for beam-column removal, wherein the load-guiding support is a pair of I-beams fixedly disposed on opposite sides of the load-guiding area, and the load-guiding frame is composed of load-guiding steel beams connected around the load-guiding area, and the two ends of the pair of I-beams are respectively fixed to the inner periphery of the load-guiding frame; and the upper and lower ends of the portion of each I-beam located in the load-guiding area abut against the upper and lower inner steps of the load-guiding area.

[0025] By adopting the above technical solution, the load guiding support is set as a pair of I-beams located on opposite sides of the load transfer area, which not only ensures the strength of the load guiding support, but also facilitates construction and saves costs.

[0026] In addition, by having the upper and lower ends of each I-beam located within the support area abut against the upper and lower inner steps of the support area, the load of the frame beam above the support column to be removed can be normally transmitted to the support column to be removed through the I-beam located within the support area before the load assembly supporting the load guiding assembly is erected. This ensures the support force of the support column to be removed on the frame beam after the support area is removed.

[0027] Furthermore, by setting the load guide frame as a component consisting of load guide steel beams connected around the load transfer area, and fixing the two ends of a pair of I-beams to the inner periphery of the load guide frame, the load assembly can support the load guide support located in the load transfer area by supporting the load guide frame located on the periphery of the load transfer area.

[0028] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a construction method for beam-supported column removal. In step S3, each load assembly includes a frame column jack and a second support member supported on the frame column jack. Multiple load assemblies are evenly arranged at intervals along the periphery of the load guiding frame portion, and the top end of each second support member abuts against the corresponding part of the bottom end of the load guiding frame portion. Furthermore, when viewed in the vertical direction, at least the turning parts of the load guiding frame portion are provided with load assemblies.

[0029] By adopting the above technical solution, the weight of the frame beam above the support column to be removed is transferred to the load-guiding support part, and then transferred to the load assembly through the load-guiding frame part, thereby effectively transferring the vertical load of the frame beam downward.

[0030] Furthermore, by evenly distributing multiple load assemblies at intervals along the periphery of the load-guiding frame, the weight of the frame beam above the support column to be removed can be uniformly transferred to the multiple load assemblies. This means the resultant force of the multiple load assemblies on the frame beam above the support column to be removed is in the same direction as the original support force exerted by the support column on the frame beam. The segmented construction of the load assemblies below the load-guiding frame not only satisfies the required support force for the load-guiding frame but also facilitates assembly and disassembly during use.

[0031] Further, compared with the bearing assembly arranged in the underpinning area in the prior art, the bearing assembly only transmits the weight of the frame beam above the underpinning area to the original column to be removed below the underpinning area, at this time, the underpinning area is chiseled on the original column to be removed, the structure of the original column to be removed is damaged, the bearing assembly arranged in the underpinning area cannot support the weight of the frame beam, and there is a safety hazard, therefore, the unloading assembly supporting the bottom of the frame beam around the column to be removed needs to support the frame beam at all times, cannot be removed before the frame beam is reinforced, and affects the construction space of the frame beam reinforcement. Moreover, the unloading assembly cannot be removed before the frame beam is reinforced in the construction process, and there is a problem of secondary modification of the unloading assembly in the frame beam reinforcement process, which seriously affects the efficiency of the whole construction of the underpinning beam and column removal. The above scheme can support the unloading assembly by arranging the load distribution assembly in the underpinning area and uniformly distributing the load by the bearing assembly, so that the frame beam above the underpinning area has sufficient support force, and then the unloading assembly supporting the bottom of the frame beam can be removed before the frame beam is reinforced, sufficient space is provided for subsequent frame beam reinforcement, and the construction efficiency of the frame beam reinforcement is improved.

[0032] According to another specific embodiment of the present application, the construction method for underpinning beam and column removal disclosed by the embodiment of the present application provides that, in step S5, a reinforcing beam is formed by pouring cast-in-place concrete between the frame beam and the plurality of steel bars arranged below each frame beam, and the formwork is removed after the reinforcing beam is solidified and reaches the design strength.

[0033] By using the above technical scheme, the reinforcing beam is formed by pouring cast-in-place concrete between the frame beam and the plurality of steel bars, which not only ensures the design strength of the reinforcing beam but also increases the safety of the reinforcing beam.

[0034] According to another specific embodiment of the present application, the construction method for underpinning beam and column removal disclosed by the embodiment of the present application provides that, in step S6, the load distribution assembly and the bearing assembly in steps S2 and S3 are removed after the reinforcing beam in step S5 is solidified for a preset solidification time, and the removal sequence is to remove the bearing assembly first and then remove the load distribution assembly.

[0035] According to another specific embodiment of the present application, the construction method for underpinning beam and column removal disclosed by the embodiment of the present application provides that, in step S6, an electronic displacement meter is arranged below the reinforcing beam below each frame beam, each electronic displacement meter is 0.4 m to 1 m away from the column to be removed, the load distribution assembly is removed, the electronic displacement meter continuously monitors the actual displacement value of the reinforcing beam during the removal process, and the actual displacement value is compared with the theoretical deformation value; if the actual displacement value is less than the theoretical deformation value, the load distribution assembly is continuously removed; or if the actual displacement value is greater than the theoretical deformation value, the corresponding frame beam is secondarily reinforced before the load distribution assembly is removed.

[0036] According to the technical scheme, the measurement value of the electronic displacement meter can ensure the strength of the reinforcing beam after the load guide assembly is disassembled and improve the safety of the reinforcing beam after the load guide assembly is disassembled.

[0037] According to another specific embodiment of the present application, the construction method for pulling out the support column of the joist disclosed by the embodiment of the present application sets the preset curing time of the reinforcing beam to 25 days to 32 days.

[0038] According to the technical scheme, the reinforcing beam can be fully cured, the strength of the reinforcing beam after the formwork is removed is improved, and the safety of the construction process is improved.

[0039] According to another specific embodiment of the present application, the construction method for pulling out the support column of the joist disclosed by the embodiment of the present application cuts the support column to be pulled out in the underpinning area before step S6, separates the upper and lower sections of the support column to be pulled out, and then enters step S6.

[0040] According to the technical scheme, before the load guide assembly and the load assembly are removed, the support column to be pulled out in the underpinning area is cut and separated, which facilitates the observation of the strength of the reinforcing beam during the disassembly of the load guide assembly and facilitates the subsequent pulling out of the support column to be pulled out below the underpinning area.

[0041] According to another specific embodiment of the present application, the height of the underpinning area is set as:

[0042]

[0043] wherein,

[0044] C is the height of the underpinning area;

[0045] D is the diameter of the support column to be pulled out;

[0046] a is the depth of the step surface;

[0047] H is the size of the bottom of the support column to be pulled out from the step surface;

[0048] h is the remaining height of the step in the underpinning area when the support column to be pulled out is removed.

[0049] By setting the height of the supporting area to be greater than the highest height of the support column to be removed away from the frame beam when the support column to be removed away from the frame beam is tilted and subtracting the height of the support column to be removed away from the frame beam when the support column to be removed away from the frame beam is not chiseled, the top end of the support column to be removed away from the frame beam will not collide with the bottom end of the support column to be removed close to the frame beam when the support column to be removed away from the frame beam is removed in a manner of tilting in a direction, thereby ensuring the normal removal of the support column to be removed away from the frame beam and ensuring the construction efficiency when the support column to be removed away from the frame beam is chiseled.

[0050] The present application has the following advantages:

[0051] The present application provides a construction method for supporting beam column removal, comprising the following steps: setting up an unloading assembly supported at the bottom of the frame beam, setting a supporting area on the support column to be removed, supporting a load guiding assembly in the supporting area, supporting the load guiding assembly through the load assembly, and applying the load of the frame beam on the support column to be removed to the load assembly. At this time, the unloading assembly can be removed, thereby realizing the reinforcement of the frame beam. After the frame beam is reinforced, the support column to be removed can be chiseled. When the construction method is used for supporting beam column removal, the unloading assembly supported at the bottom of the frame beam is removed before the frame beam is reinforced, and the unloading assembly does not occupy the space below the frame beam, thereby providing a larger construction space for subsequent reinforcement of the frame beam. The reinforced beam can be reinforced and formed at one time, without segmented reinforcement, thereby improving the construction efficiency of the frame beam reinforcement. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 FIG. 1 is a flowchart of a construction method for supporting beam column removal in an embodiment of the present application;

[0053] Figure 2 FIG. 2 is a structural diagram of a frame beam and a support column to be removed in an embodiment of the present application;

[0054] Figure 3 FIG. 3 is a partial structural diagram of a support column to be removed in an embodiment of the present application;

[0055] Figure 4 FIG. 4 is a cross-sectional structural diagram of a support column to be removed in an embodiment of the present application.

[0056] REFERENCE SIGNS:

[0057] 100, support column to be removed;

[0058] 110, unloading assembly;

[0059] 111, frame beam jack;

[0060] 112, first support;

[0061] 1120, frame beam steel pipe; 1121, frame beam steel plate;

[0062] 120, load guide assembly;

[0063] 121, load guide support part;

[0064] 122, load guide frame part;

[0065] 1220, turning part;

[0066] 130, load assembly;

[0067] 131, frame column jack;

[0068] 132, second support;

[0069] 1320, frame column steel pipe; 1321, frame column steel plate;

[0070] 140, frame beam;

[0071] 150, reinforced beam;

[0072] 160, underpinning area;

[0073] L, first preset distance;

[0074] M, second preset distance. DETAILED DESCRIPTION

[0075] The beam-pulling column is the general term of the beam-pulling column of the roof truss, the beam-pulling wall and the beam-pulling column, which is a special technology for implementing the removal of part (or all) bearing columns or walls without or with less removal of the upper structure. In the process of the beam-pulling column of the prior art, support members need to be arranged on the frame beam before and after reinforcement to ensure the support force of the support members on the frame beam after the column body structure of the column to be pulled out is damaged, and the support force of the support members on the frame beam when the reinforced beam is not cured.

[0076] Therefore, in the process of frame beam reinforcement of the prior art, multiple support members are supported on the bottom of the frame beam, which seriously affects the construction efficiency of the frame beam reinforcement.

[0077] To solve the problem, the application provides a construction method for beam and column pulling, comprising the following steps: setting an unloading assembly supported on the bottom of the frame beam, setting a support replacement area on the support column to be pulled out, supporting a load guiding assembly in the support replacement area, supporting the load guiding assembly through the load assembly, applying the load of the frame beam on the support column to be pulled out on the load assembly, and then removing the unloading assembly to reinforce the frame beam, and then chiseling the support column to be pulled out. When the construction method is used for beam and column pulling, the unloading assembly supported on the bottom of the frame beam is removed before the frame beam is reinforced, the unloading assembly does not occupy the space below the frame beam, and more construction space is provided for subsequent frame beam reinforcement, so that the reinforced beam can be reinforced and formed at one time without segmented reinforcement, and the construction efficiency of the frame beam reinforcement is improved.

[0078] To make the purpose, technical solutions and advantages of the application clearer, the embodiments of the application will be further described in detail below with reference to the drawings.

[0079] The application provides a construction method for beam and column pulling, as shown in Figure 1 and Figure 2 , comprising the following steps:

[0080] S1: setting an unloading assembly 110: setting a plurality of unloading assemblies 110 below the frame beam 140 around the support column 100 to be pulled out, and setting each unloading assembly 110 at a first preset distance L from the support column 100 to be pulled out.

[0081] Specifically, as shown in Figure 2 , during the setting of the unloading assembly 110, an unloading assembly 110 is set below each frame beam 140 connected to the support column 100 to be pulled out, the first support member 112 is abutted with the bottom surface of the frame beam 140 through the frame beam jack 111 of the unloading assembly 110, and each unloading assembly 110 is set at a first preset distance L from the support column 100 to be pulled out. The additional unloading assembly 110 provides sufficient support force for the frame beam 140 after the support replacement area 160 is chiseled for the support column 100 to be pulled out, and ensures construction safety.

[0082] It should be noted that the first preset distance L can be set to any value between 3 meters and 7 meters, for example, the first preset distance L can be set to 3 meters, 3.5 meters, 5 meters, 7 meters, etc.

[0083] More specifically, in the embodiment, the unloading assembly 110 comprises a frame beam jack 111 and a first support 112 supported on the frame beam jack 111, the first support 112 is a combination of a frame beam steel pipe 1120 and a frame beam steel plate 1121, the lower end of the frame beam steel pipe 1120 is fixed on the frame beam jack 111, the frame beam jack 111 is installed on the ground, the upper end of the frame beam steel pipe 1120 is fixedly connected with the frame beam steel plate 1121, and the frame beam steel plate 1121 is abutted against the frame beam 140 through the jacking of the frame beam jack 111.

[0084] It should be noted that the frame beam jack 111 can adopt a hydraulic jack with a dial, and when in use, the unloading value applied by the frame beam jack 111 to the frame beam 140 can be directly read through the dial, so that the risk of deformation of the frame beam 140 caused by excessive unloading of the frame beam jack 111 can be avoided, and the pressure change of the frame beam 140 before and after the chiseling of the support area 160 can be observed, so that the support effect of the load guiding assembly 120 and the load assembly 130 on the upper frame beam 140 of the support column 100 to be removed can be judged through the dial display value of the frame beam jack 111 after the load guiding assembly 120 and the load assembly 130 are installed.

[0085] In addition, during construction, the unloading assembly 110 is supported at the bottom of the frame beam 140, and the unloading assembly 110 is arranged at a position 3-7 meters away from the support column 100 to be removed, so that the support strength of the unloading assembly 110 on the frame beam 140 is ensured, and a larger construction space is provided for the subsequent construction of the load assembly 130 around the support column 100 to be removed.

[0086] S2: building the load guiding assembly 120: chiseling the support area 160 at the upper part of the support column 100 to be removed and a second preset distance M away from the frame beam 140 downward, and installing the load guiding assembly 120 in the support area 160, the upper and lower ends of the load guiding assembly 120 are respectively abutted on the stepped surface chiseled on the sidewall of the support column 100 to be removed in the support area 160, and the outer periphery of the load guiding assembly 120 protrudes from the outer sidewall of the support column 100 to be removed.

[0087] Specifically, as shown in Figure 3 When the load guiding assembly 120 is built, the load guiding assembly 120 comprises a load guiding support part 121 and a load guiding frame part 122, the load guiding support part 121 is a pair of I-shaped steel beams fixedly arranged on the two opposite sides of the support area 160, the load guiding frame part 122 is composed of load guiding steel beams surrounding the support area 160, and the two ends of the pair of I-shaped steel beams are respectively fixedly connected with the abutting inner periphery of the load guiding frame part 122.

[0088] More specifically, in the embodiment, the second preset distance M between the underpinning area 160 and the frame beam 140 is set to be greater than the distance of the space reserved for the reinforcement work below the frame beam 140, so as to not only reduce the damage to the existing frame beam 140 structure as much as possible to maintain the strength of the existing frame beam 140 structure, but also to provide sufficient construction space for the reinforcement beam 150 construction, facilitating the one-time reinforcement forming of the reinforcement beam 150. It should be noted that the second preset distance M between the underpinning area 160 and the frame beam 140 can be set to be equal to the distance of the space reserved for the reinforcement work below the frame beam 140, for example, the distance of the space reserved for the reinforcement work below the frame beam 140 is set to 0.5m, the total length of the support column 100 to be removed is 5m, the height of the underpinning area 160 is set to 0.5m, and the height of the support member is 0.5m, in order to reserve the construction space of the underpinning area 160 and the support member. At this time, the second preset distance M can be set to any value between 0.5m and 4m, for example, the second preset distance M can be set to 0.5m, 1m, 2m, 4m, etc.

[0089] More specifically, in the embodiment, the support column 100 to be removed is a square column, and in the process of chiseling the underpinning area 160, first, the cross section of the area of the support column 100 to be chiseled is divided into nine equal parts, then three areas on one side of the support column 100 to be chiseled are chiseled and placed in the I-beam, secondly, three areas on the other side of the support column 100 to be chiseled are chiseled and placed in the I-beam, and finally, the remaining part of the support column 100 is chiseled, and the middle part of the support column 100 in the underpinning area 160 is reserved. It should be noted that the cross section of the area of the support column 100 to be chiseled can also be divided into three equal parts, and by chiseling the parts on both sides of the support column 100 to be chiseled, the load guide assembly 120 can be arranged in the underpinning area 160.

[0090] Further, when the I-beam is arranged in the underpinning area 160, the back-embedded plate is arranged on the step surface of the underpinning area 160 opposite to the frame beam 140 and away from the frame beam 140, the back-embedded plate is connected to the step surface of the underpinning area 160 opposite to the frame beam 140 and away from the frame beam 140 by expansion bolts, the I-beam is arranged on the step surface of the underpinning area 160 opposite to the frame beam 140, the top surface of the I-beam is tightly arranged against the step surface of the underpinning area 160 opposite to the frame beam 140 and close to the frame beam 140, and the bottom surface of the I-beam is welded to the surface of the back-embedded plate.

[0091] It should be noted that by arranging the load guide support part 121 as a pair of I-beams arranged on the opposite sides of the underpinning area 160, the strength of the load guide support part 121 can be ensured, and the construction is facilitated and the cost is saved.

[0092] In addition, by abutting the upper and lower ends of the portion of each I-beam located within the underpinning area 160 against the upper and lower inner step surfaces of the underpinning area 160, the load of the frame beam 140 above the support column 100 to be removed can be normally conducted to the support column 100 to be removed through the I-beam located within the underpinning area 160 before the load assembly 130 is erected to support the load assembly 120, thereby ensuring the support force of the support column 100 to be removed on the frame beam 140 after the underpinning area 160 is removed.

[0093] S3: erecting the load assembly 130; a plurality of load assemblies 130 are uniformly and spacedly arranged on the circumferential side of the support column 100 to be removed, and the top end of each load assembly 130 of the plurality of load assemblies 130 abuts against the bottom end of the circumferential edge of the load guide assembly 120.

[0094] Specifically, in the embodiment, as shown in Figure 3 the load assembly 130 includes a frame column jack 131 and a second support 132 supported on the frame column jack 131, the second support 132 is arranged as a combination of a frame column steel pipe 1320 and a frame column steel plate 1321, the lower end of the frame column steel pipe 1320 is fixed on the frame column jack 131, the frame column jack 131 is installed on the ground, the upper end of the frame column steel pipe 1320 is fixedly connected with the frame column steel plate 1321, and the frame column steel plate 1321 abuts against the corresponding part of the bottom end of the load guide frame part 122 through the jacking of the frame column jack 131. It should be noted that the plurality of load assemblies 130 are uniformly and spacedly arranged along the circumferential side of the load guide frame part 122, and during the erection process, the dial display value of the frame beam jack 111 is observed when adjusting the jacking height of the frame column jack 131, and when the dial display value of the frame beam jack 111 is equal to the dial display value of the frame beam jack 111 before the underpinning area 160 is removed, the adjustment of the jacking height of the frame column jack 131 is stopped.

[0095] More specifically, in the embodiment, the load guide frame part 122 is composed of load guide steel beams surrounding the underpinning area 160 and connected end to end, and forms a square when viewed in the vertical direction, and the load guide support part 121 is a pair of I-beams fixedly arranged on the two opposite sides of the underpinning area 160, the end portions of the pair of I-beams are fixedly connected with the inner circumferences of the four sides of the load guide steel beams, at this time, the turning part 1220 of the load guide frame part 122 is the joint position of the adjacent two load guide steel beams, and the load assembly 130 is erected below the turning part 1220.

[0096] More specifically, in one embodiment, the load guiding frame portion 122 is composed of four arc-shaped load guiding steel beams with a central angle of 90° around the underpinning area 160, and the four arc-shaped load guiding steel beams are identical in shape, so that the load guiding frame portion 122 is circular when viewed in the vertical direction, and the load guiding support portion 121 is a pair of I-shaped steel beams fixedly arranged on the opposite sides of the underpinning area 160, and the ends of the pair of I-shaped steel beams are fixedly connected to the inner periphery of the four sides of the arc-shaped load guiding steel beams, at this time, the turning position 1220 of the load guiding frame portion 122 is the joint position of the adjacent two arc-shaped load guiding steel beams, and the load assembly 130 is built below the turning position 1220.

[0097] More specifically, in another embodiment, the load guiding frame portion 122 is composed of four load guiding steel beams with different lengths around the underpinning area 160, and is formed into an irregular quadrilateral when viewed in the vertical direction, and the load guiding support portion 121 is a pair of I-shaped steel beams fixedly arranged on the opposite sides of the underpinning area 160, and the ends of the pair of I-shaped steel beams are fixedly connected to the inner periphery of the four sides of the load guiding steel beams, at this time, the turning position 1220 of the load guiding frame portion 122 is the joint position of the adjacent two load guiding steel beams, and the load assembly 130 is built below the turning position 1220.

[0098] It should be noted that by arranging the load assembly 130 below the plurality of turning positions 1220 of the load guiding frame portion 122, the weight of the frame beam 140 above the support column 100 to be removed is conducted to the load guiding support portion 121, and then conducted to the load assembly 130 through the load guiding frame portion 122, thereby effectively transferring the vertical load of the frame beam 140 above the support column 100 to be removed downward.

[0099] In addition, by uniformly arranging the plurality of load assemblies 130 along the circumferential side of the load guiding frame portion 122 with intervals, the weight of the frame beam 140 above the support column 100 to be removed can be uniformly transferred to the plurality of load assemblies 130, that is, the resultant force direction of the support force of the plurality of load assemblies 130 on the frame beam 140 above the support column 100 to be removed is equivalent to the support force direction of the original support column 100 to be removed on the frame beam 140. Among them, the load assembly 130 is built in sections below the load guiding frame portion 122, which not only meets the support force of the load guiding frame portion 122, but also makes the load assembly 130 easy to assemble and disassemble during use.

[0100] It should be understood that multiple load assemblies 130 are disposed below multiple turning points 1220. Therefore, the number of multiple turning points 1220 is equal to the number of multiple load assemblies 130, and the number of multiple turning points 1220 is determined by the number of guide beams connected end-to-end around the support area 160. When it is necessary to set the guide beams end-to-end around the support area 160, at least two guide beams are required. Therefore, the number of multiple turning points 1220 and the number of multiple load assemblies 130 can be set to any number of two or more, such as two, three, four, six, etc.

[0101] S4: Remove unloading assembly 110.

[0102] Specifically, such as Figure 1 As shown, in this embodiment, after ensuring that the load guiding assembly 120 and the load assembly 130 are installed and have sufficient supporting force for the frame beam 140 above the support column 100 to be removed, the unloading assembly 110 is dismantled.

[0103] Furthermore, before reinforcing the frame beam 140, the unloading assembly 110 supporting the frame beam 140 around the support column 100 to be removed is removed. The unloading assembly 110 will not occupy the space under the frame beam 140, providing more construction space for the subsequent reinforcement of the frame beam 140. The reinforcement beam 150 can be reinforced in one go without segmented reinforcement, avoiding the problem that the frame beam 140 reinforcement does not have enough working space due to the arrangement of the unloading assembly 110 and requires secondary dismantling and modification.

[0104] S5: Reinforced frame beam 140.

[0105] Specifically, in this embodiment, reinforcing bars are installed within the reserved working space below each frame beam 140. Reinforcing beams 150 are then cast in place between the frame beams 140 and several reinforcing bars using cast-in-place concrete. After the reinforcing beams 150 have cured and reached their design strength, the formwork used during casting is removed. It should be noted that the preset curing time for the reinforcing beams 150 is 25 to 32 days. Construction personnel can extend or shorten the curing time within the specified timeframe based on the degree of curing of the reinforcing beams 150.

[0106] By installing reinforcing bars inside the reinforcing beam 150 and allowing sufficient time for curing, the strength of the reinforcing beam 150 is guaranteed, and its safety in use is improved.

[0107] S6: Remove the load guide assembly 120 and the load assembly 130.

[0108] Specifically, in the embodiment, after the to-be-reinforced beam 150 is completely cured, the remaining support column 100 to be removed is cut in the range of the underpinning area 160, the upper and lower sections of the support column 100 to be removed are separated, and then the load assembly 130 and the load guide assembly 120 are removed in sequence, i.e., the load assembly 130 is removed first, and then the load guide assembly 120 is removed.

[0109] More specifically, before the load guide assembly 120 is removed, an electronic displacement meter is placed under the to-be-reinforced beam 150 of each frame beam 140, and each electronic displacement meter is 0.6 m away from the support column 100 to be removed. Then, the load guide assembly 120 is removed, and during the removal process, the electronic displacement meter continuously monitors the actual displacement value of the to-be-reinforced beam 150 and compares the actual displacement value with the theoretical deformation value.

[0110] If the actual displacement value is less than the theoretical deformation value, the load guide assembly 120 continues to be removed.

[0111] If the actual displacement value is greater than the theoretical deformation value, the corresponding frame beam 140 is reinforced again before the load guide assembly 120 is removed.

[0112] For example, in the construction process, taking the reinforced beam 150 as an example, which is a concrete structure with steel bars embedded therein, the theoretical deformation value is 0.5 mm. If the actual displacement value of the reinforced beam 150 detected during the removal of the load guide assembly 120 does not exceed 0.5 mm, the load guide assembly 120 can be completely removed.

[0113] If the actual displacement value of the reinforced beam 150 detected during the removal of the load guide assembly 120 exceeds 0.5 mm, the removal of the load guide assembly 120 is stopped, the frame beam 140 is reinforced again, and then it is observed whether the actual displacement value of the reinforced beam 150 exceeds 0.5 mm during the removal of the load guide assembly 120. If the actual displacement value does not exceed the theoretical deformation value of 0.5 mm, the load guide assembly 120 is completely removed. If the actual displacement value exceeds the theoretical deformation value of 0.5 mm, the frame beam 140 is continuously reinforced until the actual displacement value is within the range of the theoretical deformation value of 0.5 mm, and then the load guide assembly 120 is completely removed.

[0114] It should be noted that a person skilled in the art can select the model of the electronic displacement meter according to the actual use, and the embodiment is not limited.

[0115] Through real-time monitoring of the comparison between the actual displacement value and the theoretical deformation value of the frame beam 140, it can be detected whether the reinforcement strength of the frame beam 140 before and after the removal of the load guide assembly 120 meets the standard.

[0116] It should be noted that the distance of the electronic displacement meter from the support column 100 to be removed can be set to any value between 0.4m and 1m, such as 0.4m, 0.5m, 0.7m, 1m, etc.

[0117] S7: removing the support column 100 to be removed.

[0118] Specifically, the support column 100 to be removed located below the reinforced beam 150 is chiseled to complete the column removal process.

[0119] The construction method for removing the support column provided by the application, as shown in Figure 4 The calculation method of the height C of the underpinning area 160 before construction is also included.

[0120]

[0121] In the above formula, C is the height of the underpinning area 160;

[0122] D is the diameter of the support column 100 to be removed;

[0123] a is the depth of the stepped surface;

[0124] H is the size of the bottom of the support column 100 to be removed from the stepped surface;

[0125] h is the remaining height of the stepped surface in the underpinning area 160 when the support column 100 to be removed is removed.

[0126] Regarding the above formula, the maximum height of the inclination when the support column 100 to be removed is removed is calculated, and then the height of the underpinning area 160 is calculated by subtracting the length of the bottom of the support column 100 to be removed from the stepped surface from the maximum height of the inclination when the support column 100 to be removed is removed.

[0127] It should be noted that by setting the height of the underpinning area 160 to be greater than the maximum height of the support column 100 to be removed away from the frame beam 140 when it is tilted minus the height of the support column 100 to be removed away from the frame beam 140 when it is not chiseled, it can be ensured that when the support column 100 to be removed away from the frame beam 140 is removed, even if the support column 100 to be removed away from the frame beam 140 is removed in the form of tilting towards one direction, the top end of the support column 100 to be removed away from the frame beam 140 will not collide with the bottom end of the support column 100 to be removed close to the frame beam 140. Therefore, this scheme can ensure the normal removal of the support column 100 to be removed away from the frame beam 140 and improve the construction efficiency when the support column 100 to be removed away from the frame beam 140 is chiseled.

[0128] Compared with the prior art, since the original support column to be removed is damaged in the process of chiseling out the underpinning area, the support column to be removed is insufficient in supporting force on the frame beam above the support column to be removed, only the bearing assembly is arranged in the underpinning area to conduct the load of the frame beam above the support column to be removed to the support column to be removed below the underpinning area, which is far from enough to ensure the load of the frame beam above the support column to be removed, and therefore, the unloading assembly needs to be arranged at the bottom of the frame beam around the support column to be removed before and after the frame beam is reinforced to ensure the support force on the frame beam, and therefore, the unloading assembly needs to be removed before the frame beam at the position of the unloading assembly is reinforced, the unloading assembly is supported at the position after the reinforcement is completed, and the unloading assembly is removed after the reinforced beam is solidified, so it can be known that the unloading assembly needs to be removed twice in the process of underpinning and support column removal in the prior art, which seriously affects the construction efficiency of underpinning and support column removal.

[0129] The construction method for underpinning and support column removal provided by the application uses the sufficient support force of the load assembly 130 and the load guide assembly 120 on the frame beam 140 above the support column 100 to be removed, so that the unloading assembly 110 supported on the frame beam 140 around the support column 100 to be removed can be removed before the reinforced beam 150 is reinforced, which provides a larger construction space for subsequent reinforcement of the frame beam 140, and the reinforced beam 150 can be reinforced and formed at one time without segmented reinforcement, thereby improving the construction efficiency of the reinforcement of the frame beam 140.

[0130] It should be noted that in addition to the specific embodiments described above, other advantages and effects of the application can be easily understood by those skilled in the art from the disclosure. Although the description of the application is introduced in combination with the preferred embodiments, this does not mean that the features of the application are limited to the embodiments. On the contrary, the purpose of introducing the application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the application. In order to provide a deep understanding of the application, many specific details are included in the above description, and the application can also be implemented without using these details. In addition, in order to avoid confusion or ambiguity of the application, some specific details will be omitted in the description. It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict.

[0131] It should be noted that in this specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0132] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0133] The terms "first", "second", and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0134] In the description of the present embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0135] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is a further detailed description of the present application in connection with specific embodiments, and cannot be considered as a limitation on the specific implementation of the present application. Those skilled in the art can make various changes in form and details, including making a number of simple deductions or substitutions, without departing from the spirit and scope of the present application.

Claims

1. A construction method for supporting beams and removing columns, characterized in that, Includes the following steps: S1. Construct unloading components: Construct multiple unloading components under the frame beam around the support column to be removed, with each unloading component constructed at a first preset distance from the support column to be removed. The unloading assembly includes a frame beam jack and a first support member supported on the frame beam jack, the top of the first support member abutting against the bottom surface of the frame beam; and the first preset distance is 3 meters to 7 meters. S2. Constructing a load guiding assembly: A replacement area is chiseled out at a second preset distance downward from the frame beam on the upper side wall of the support column to be removed, and the load guiding assembly is installed in the replacement area. The upper and lower ends of the load guiding assembly respectively abut against the stepped surface chiseled out on the side wall of the support column to be removed within the replacement area, and the outer periphery of the load guiding assembly protrudes from the outer periphery side wall of the support column to be removed. The load guiding assembly includes a load guiding support portion at least partially fixed to the replacement area, and a load guiding frame portion fixed to the periphery of the load guiding support portion and arranged around the support column to be removed; and The second preset distance is greater than or equal to the space required for reinforcement work below the frame beam; The load-guiding support is a pair of I-beams fixedly installed on opposite sides of the load-guiding area, and the load-guiding frame is formed by connecting the load-guiding steel beams surrounding the load-guiding area, with both ends of the pair of I-beams fixed to the inner periphery of the four sides of the load-guiding frame; and The upper and lower ends of the portion of each I-beam located within the support area abut against the upper and lower inner step surfaces of the support area; S3. Constructing load components: Multiple load components are evenly spaced around the periphery of the support column to be removed, with the top of each load component abutting the bottom of the periphery edge of the load guiding component. S4. Remove the unloading assembly; S5. Reinforce the frame beam; S6. Remove the load guiding assembly and the load assembly; S7. Remove the support column to be removed.

2. The construction method for beam-supported column removal as described in claim 1, characterized in that, In step S3: Each load assembly includes a frame column jack and a second support member supported on the frame column jack. Multiple load assemblies are evenly spaced along the periphery of the load guide frame, and the top end of each second support member abuts against a corresponding portion of the bottom end of the load guide frame. When viewed vertically, at least the turning points of the load-guiding frame are provided with the load components.

3. The construction method for beam-column removal as described in claim 2, characterized in that, In step S5: Reinforcing bars are installed in the reserved working space under each frame beam. Reinforcing beams are formed by casting concrete between the frame beams and several reinforcing bars. After the reinforcing beams have cured and reached the design strength, the formwork used during casting is removed.

4. The construction method for beam-supported column removal as described in claim 3, characterized in that, In step S6: After the reinforced beam in step S5 has cured for a preset time, the load guiding component and the load component in steps S2 and S3 are removed respectively, and the removal order is to remove the load component first and then remove the load guiding component.

5. The construction method for beam-column removal as described in claim 4, characterized in that, In step S6: An electronic displacement meter is placed under the reinforcing beam below each of the frame beams, with each electronic displacement meter being 0.4m to 1m away from the support column to be removed; The load-conducting assembly is disassembled, and during the disassembly process, the electronic displacement gauge continuously monitors the actual displacement value of the reinforced beam and compares the actual displacement value with the theoretical deformation value; and If the actual displacement value is less than the theoretical deformation value, then the load guiding assembly shall continue to be disassembled. or If the actual displacement value is greater than the theoretical deformation value, the corresponding frame beam will be reinforced a second time before the load guiding component is disassembled.

6. The construction method for beam-column removal as described in claim 4, characterized in that, The preset curing time for the reinforced beam is 25 to 32 days.

7. The construction method for beam-column removal as described in claim 6, characterized in that, Before step S6, the method further includes: Within the replacement area, the support column to be removed is cut off to separate the upper and lower sections of the support column to be removed, and then proceed to step S6.

8. The construction method for removing the column from the support beam as described in any one of claims 1 to 7, characterized in that, The height of the swapping area is set as follows: ； in, The height of the swapping area; The diameter of the support column to be removed; The depth of the step surface; The distance from the bottom of the support column to be removed to the step surface; The remaining height of the steps in the replacement area when the support column to be removed is dismantled.

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