Bidirectional reinforcement mesh grouting structure and construction method for widening bent bracket columns

Abstract

The present invention discloses a bidirectional reinforcement mesh grouting structure and reinforcement construction method for widening a bent corbel column, including through longitudinal reinforcement and a straight-line through section within the corbel range, with connected vertical reinforcement holes and horizontal reinforcement holes corresponding to the steel bar positions, a horizontal grouting blind hole provided on the top of the corbel, a grouting nozzle provided on the horizontal grouting blind hole, the grouting horizontal connecting hole, the horizontal reinforcement hole and the horizontal grouting blind hole all connected with the vertical reinforcement hole to form a grouting hole network, the reinforcement consolidation material is filled into the grouting hole network from the grouting nozzle and the grouting compensation funnel, and the open ends of each hole are blocked when the reinforcement consolidation material overflows. The present invention designs a grouting hole network structure, vertically injects glue from top to bottom, increases the number of exhaust holes in the grouting, and uses the principle of imitating a communicating vessel to ensure that each hole is filled, so that the existing double grouting of bidirectional reinforcement is integrated into a single grouting of bidirectional reinforcement, thereby ensuring the quality and efficiency of reinforcement construction.

Description

Technical Field

[0001] The invention belongs to the field of building reinforcement and reconstruction, in particular to a bent corbel column widening bidirectional reinforcement mesh grouting structure and a construction method thereof. Background Art

[0002] In the renovation of old industrial plants, according to the structural design, the frame columns often have the need to increase their cross-sections for reinforcement. In the process of increasing the cross-section and strengthening the frame columns, it is inevitable to rearrange the reinforcement of the frame columns. Since many industrial plants are equipped with crane beams, there are generally reinforced concrete corbels on the frame columns that were originally designed to receive crane beams. At this time, the newly added column reinforcements inevitably need to penetrate the original frame column corbels. The newly added column reinforcements include longitudinal reinforcement bars and horizontal stirrups. The longitudinal reinforcement bars and horizontal stirrups also need to be connected. The conventional rebar embedding process is to open the rebar embedding holes first, then inject glue, and finally embed the rebar. In the process of inserting the rebar, the rebar embedding glue will adhere to the rebar, and it is difficult to re-apply the rebar embedding glue. The existing through-rebar embedding has also been improved to a method of inserting the rebar first and then injecting glue. The general construction process is as follows:

[0003] Horizontal through-rebar planting: first insert the treated steel bars into the horizontal rebar planting holes, seal both ends of the rebar planting holes with epoxy mortar, then open new holes near both ends of the rebar planting holes, open a glue injection hole at one end and an air hole at the other end. After the epoxy mortar solidifies at both ends of the rebar planting holes, perform high-pressure glue injection at the glue injection holes until glue overflows from the air hole at the other end.

[0004] Vertical through-rebar planting: Similar to horizontal rebar planting, the rebar planting hole is set vertically, the glue injection hole is opened near the bottom of the rebar planting hole, and the air outlet hole is opened near the top of the rebar planting hole. When injecting glue, inject glue from the injection hole at the bottom of the hole upward until the glue overflows from the air outlet hole at the top. Then, both the glue injection hole and the rebar planting hole need to be sealed after the glue injection is completed.

[0005] If the existing through-rebar planting method is adopted, the following problems will occur:

[0006] 1. Planting tends to avoid dense construction on the same component, and when construction is required, the planting reinforcements must be spaced a certain distance apart. Therefore, for the newly added bidirectional column reinforcement, whether it is the column longitudinal force reinforcement or the column horizontal stirrups, only one-way through planting reinforcement can be used when passing through the corbels. That is to say, in actual construction, according to the current construction method, through planting reinforcement in two directions is required to be carried out separately, and the construction processes in the two directions are completely separated and have a certain interval. However, in the design of the newly added bidirectional column reinforcement, the column longitudinal force reinforcement and the column horizontal stirrups need to be stressed as a whole. After the interval planting reinforcement, the column longitudinal force reinforcement and the column horizontal stirrups cannot be directly connected to coordinate the stress, and can only be indirectly stressed through the interval concrete, which does not comply with the column reinforcement design.

[0007] 2. When vertically penetrating rebar, the glue is injected from bottom to top, which makes the operation difficult. At the same time, the bottom needs to be sealed after the rebar is planted. However, how to ensure the construction between the two steps of stopping the injection and sealing the bottom can easily cause the rebar glue to drip from the bottom or make the sealing construction difficult.

[0008] 3. The cross-section of the corbel is large, the steel bars are densely packed, and the reinforcement nodes are complex. It is sometimes difficult to avoid the original corbel steel bars when inserting the reinforcement. When the rebar embedding glue is injected vertically from bottom to top, due to the obstruction of the original steel bars, the air outlet is only the top air outlet, which easily leads to the rebar embedding glue in the complex node position not being able to be fully filled in the bottom vertical rebar embedding hole when injected.

[0009] Therefore, how to ensure the construction quality of the reinforced concrete of the increased cross-section frame columns while ensuring the efficiency of the construction is a difficult problem in the current reinforcement project. Summary of the Invention

[0010] The purpose of the present invention is to provide a bidirectional rebar mesh grouting structure for widening a bent corbel column and a construction method thereof, in order to solve the technical problem that in the existing through-rebar method, the construction of new bidirectional rebar on the same component needs to be completely separated into two construction processes with a certain interval, which does not meet the design requirements that the bidirectional steel bars need to be directly connected and subjected to coordinated force; and to solve the problem that the existing vertical through-rebar easily causes the rebar glue to drip or the glue injection is not full, and also to solve the problem that the vertical through-rebar is blocked by the original steel bar and only has the top air outlet, resulting in the glue injection cannot be full.

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A bidirectional reinforcement mesh grouting structure for widening a bent-frame corbel column comprises an original bent-frame corbel column structure and an in-situ widened column structure. The original bent-frame corbel column structure comprises an original column and a corbel. The in-situ widened column structure comprises widened column reinforcement to be constructed. The widened column reinforcement is divided into widened longitudinal reinforcement and widened stirrup reinforcement according to the load. The widened longitudinal reinforcement is connected to the widened stirrup reinforcement. The widened column reinforcement is divided into two parts with the corbel as the boundary, namely, binding reinforcement outside the corbel range and through reinforcement within the corbel range.

[0013] The widened longitudinal reinforcement includes the tied longitudinal reinforcement outside the corbel range and a group of through longitudinal reinforcement within the corbel range. The widened stirrups include the tied stirrups outside the corbel range and a group of through stirrups within the corbel range. The through stirrups are made of open stirrups, including an external U-shaped section and a straight-through section.

[0014] The through longitudinal reinforcement and the I-shaped through section penetrate the reinforcement in the corbel. The I-shaped through section is located on the outside of the through longitudinal reinforcement and the two are connected in a mesh shape in the corbel.

[0015] A group of vertical reinforcement holes are opened in the corbel at the positions corresponding to the through longitudinal reinforcements. Each through longitudinal reinforcement corresponds to each vertical reinforcement hole and is passed through. The bottom of the vertical reinforcement hole is blocked and the top is opened to form an exhaust grouting port. A grouting compensation funnel is provided on the exhaust grouting port. Two grouting horizontal connecting holes are opened on both sides of the corbel in the vertical plane where the vertical reinforcement holes are located. The grouting horizontal connecting holes connect the vertical reinforcement holes in the horizontal plane where each hole is located in turn. Both ends of the grouting horizontal connecting holes are blocked.

[0016] A set of horizontal rebar holes are opened in the position of the I-shaped through section in the corbel. The horizontal rebar holes are located outside the vertical rebar holes and the outer half of the horizontal rebar holes are connected to the vertical rebar holes. Each I-shaped through section corresponds to each horizontal rebar hole and penetrates into it.

[0017] There is also a horizontal grouting blind hole on the top of the corbel, which connects the outside of the corbel with the outermost one of the vertical reinforcement holes close to the side wall of the corbel. A grouting nozzle is provided on the horizontal grouting blind hole.

[0018] The three holes of horizontal grouting connecting hole, horizontal rebar hole and horizontal grouting blind hole are all connected with the vertical rebar hole to form a grouting hole network. The rebar consolidation material fills the grouting hole network from the grouting nozzle and the grouting compensation funnel. The horizontal grouting blind hole and the exhaust grouting port are blocked when the rebar consolidation material overflows. Both ends of the horizontal rebar hole are blocked or one end is blocked and the other end is open. The open end is blocked when the rebar consolidation material overflows.

[0019] The vertical rebar embedding holes are circular holes, and the horizontal grouting connecting holes are also circular holes. The diameter of the horizontal grouting connecting holes is the same as that of the vertical rebar embedding holes. The size of the vertical rebar embedding holes is 3mm-4mm larger than the diameter of the through longitudinal reinforcement.

[0020] The horizontal rebar planting hole is an oblong hole, and the size of the outer half of the horizontal rebar planting hole is 3mm-4mm larger than the diameter of the I-shaped through section.

[0021] There are N vertical rebar holes in total. Within the range of the corbel, the vertical rebar holes are arranged in order from near to far according to the distance from the horizontal grouting blind hole: the first vertical hole, the second vertical hole, the third vertical hole...the Nth vertical hole. The horizontal grouting blind hole is connected to the first vertical hole. The grouting compensation funnels corresponding to the exhaust grouting ports of the vertical rebar holes are the first funnel, the second funnel, the third funnel...the Nth funnel.

[0022] There are L horizontal rebar holes in total, and within the range of the corbel, from bottom to top, they are the first horizontal hole, the second horizontal hole...the L-1 horizontal hole, and the Lth horizontal hole. There are at least two grouting horizontal connecting holes, including a lower grouting horizontal connecting hole and an upper grouting horizontal connecting hole. The lower grouting horizontal connecting hole is arranged on the corbel between the first horizontal hole and the second horizontal hole. The horizontal grouting blind hole is arranged above the upper grouting horizontal connecting hole and on the corbel between the L-1 horizontal hole and the Lth horizontal hole.

[0023] The anchoring material is polymer mortar, anchoring glue or steel glue.

[0024] A reinforcement construction method for a bent bracket column widening bidirectional reinforcement mesh grouting structure, the construction steps are as follows:

[0025] Step 1: According to the reinforcement design of the widened column reinforcement, vertical and horizontal reinforcement holes are opened on the corresponding positions of the bracket;

[0026] Step 2: Design and construct the positions of the horizontal grouting connecting holes and the horizontal grouting blind holes according to the height of the corbel and the spacing of the widened stirrups;

[0027] Step 3: Tie each tied longitudinal reinforcement in place, pass each through longitudinal reinforcement through each vertical reinforcement hole and tie it in place, tie each tied stirrup in place, then tie each external U-shaped segment in place, and each I-shaped through segment through each horizontal reinforcement hole, tie each U-shaped segment and each I-shaped through segment into one body to form each through stirrup; then seal the bottom of the vertical reinforcement hole and both ends of the grouting horizontal connecting hole;

[0028] Step 4: Insert the grouting nozzle into the horizontal grouting blind hole, and start injecting the rebar consolidation material into the first vertical hole connected to the horizontal grouting blind hole. Use pressure grouting during the injection process. The grouting is injected at a uniform speed to ensure the material penetration and flow time. Exhaust gas is discharged through the exhaust grouting port during the grouting process.

[0029] The injection process of the reinforcement consolidation material is as follows:

[0030] Step a: The reinforcement consolidation material flows along the wall of the first vertical hole and the surface of the steel bar to the bottom of the first vertical hole. After the bottom is filled, the liquid level in the first vertical hole rises to the height of the first horizontal hole;

[0031] Step b: The rebar consolidation material diffuses through the first horizontal hole to the second, third, ... Nth vertical holes connected thereto at the same height, until the liquid levels in the first, second, third, ... Nth vertical holes are at the same height;

[0032] Step c: Continuing grouting until the liquid level in the first vertical hole rises to the height of the lower horizontal grouting connecting hole, the rebar consolidation material diffuses through the lower horizontal grouting connecting hole to the second, third, ..., Nth vertical holes connected thereto at the same height, until the liquid levels in the first, second, third, ..., Nth vertical holes are at the same height;

[0033] Step d: Continuing grouting until the liquid level in the first vertical hole rises to the height of the second horizontal hole, and the rebar consolidation material diffuses through the second horizontal hole to the adjacent, connected second, third, ..., Nth vertical holes at the same height, until the liquid levels in the first, second, third, ..., Nth vertical holes are at the same height;

[0034] Step e: continue grouting until the liquid level in the first vertical hole rises to the next horizontal rebar planting hole or the next grouting horizontal connecting hole, and repeat step c or d;

[0035] Step f, continue grouting until the liquid level reaches the horizontal grouting blind hole position, and the horizontal grouting blind hole begins to overflow slurry, indicating that the liquid level has risen to this position. At this time, the L-1 horizontal hole has been filled, and then the horizontal grouting blind hole is blocked;

[0036] Step 5: Grouting the remaining height of the grouting hole network. A first funnel is set at the top of the first vertical hole. Grouting continues from the first funnel until the liquid level in the first vertical hole rises to the height of the Lth horizontal hole. The rebar consolidation material spreads through the Lth horizontal hole to the second, third, and Nth vertical holes at the same height nearby, until grout begins to overflow from the top of the first vertical hole, indicating that the first vertical hole is full. The first vertical hole is then sealed.

[0037] Step six, pause and observe whether the liquid level in the second vertical hole, the third vertical hole...the Nth vertical hole at the top hole at the same height has dropped. If it has not dropped, it means it is full, then each vertical rebar hole is blocked; if it has dropped, it means it is not full, then a second funnel, a third funnel...the Nth funnel is correspondingly set at the top of each vertical rebar hole until the vertical rebar hole is full, and then the top of each vertical rebar hole is blocked.

[0038] Furthermore, in step 1, each exhaust grouting opening of the vertical rebar planting hole is expanded to form a top grouting hole, which is respectively a first grouting hole, a second grouting hole, a third grouting hole, ... an Nth grouting hole;

[0039] Step 4: The horizontal grouting blind hole becomes an observation hole, and the grouting nozzle is directly inserted into the first expanded hole for grouting.

[0040] A reinforcement construction method for a bent bracket column widening bidirectional reinforcement mesh grouting structure, the construction steps are as follows:

[0041] Step 1: According to the reinforcement design of the widened column reinforcement, vertical and horizontal reinforcement holes are opened on the corresponding positions of the bracket;

[0042] Step 2: Design and construct the positions of the horizontal grouting connecting holes and the horizontal grouting blind holes according to the height of the corbel and the spacing of the widened stirrups;

[0043] Step 3: Tie each tied longitudinal reinforcement in place, pass each through longitudinal reinforcement through each vertical reinforcement hole and tie it in place, tie each tied stirrup in place, then tie each external U-shaped segment in place, and each I-shaped through segment through each horizontal reinforcement hole, tie each U-shaped segment and each I-shaped through segment into one body to form each through stirrup; then seal the bottom of the vertical reinforcement hole and both ends of the grouting horizontal connecting hole;

[0044] Step 4: Insert the grouting nozzle into the horizontal grouting blind hole, and start injecting the reinforcement consolidation material into the first vertical hole connected to the horizontal grouting blind hole. Use pressure grouting during the injection process. The grouting is injected at a uniform speed to ensure the material penetration and flow time. During the grouting process, exhaust is carried out through the exhaust grouting port and the open end of the horizontal reinforcement hole;

[0045] The injection process of the reinforcement consolidation material is as follows:

[0046] Step a: The reinforcement consolidation material flows along the wall of the first vertical hole and the surface of the steel bar to the bottom of the first vertical hole. After the bottom is filled, the liquid level in the first vertical hole rises to the height of the first horizontal hole;

[0047] Step b: The rebar consolidation material diffuses through the first horizontal hole to the second, third, ..., Nth vertical holes connected thereto at the same height, and when the slurry begins to overflow from the open end of the first horizontal hole away from the first vertical hole, the opening is sealed;

[0048] Step c: Continuing grouting until the liquid level in the first vertical hole rises to the height of the lower horizontal grouting connecting hole, the rebar consolidation material diffuses through the lower horizontal grouting connecting hole to the second, third, ..., Nth vertical holes connected thereto at the same height, until the liquid levels in the first, second, third, ..., Nth vertical holes are at the same height;

[0049] Step d: Continuing grouting until the liquid level in the first vertical hole rises to the height of the second horizontal hole, the rebar consolidation material diffuses through the second horizontal hole to the second, third, ..., Nth vertical holes connected thereto at the same height. When the second horizontal hole begins to overflow from the open end of the first vertical hole, the opening is sealed.

[0050] Step e: continue grouting until the liquid level in the first vertical hole rises to the next horizontal rebar planting hole or the next grouting horizontal connecting hole, and repeat step c or d;

[0051] Step f, continue grouting until the liquid level reaches the horizontal grouting blind hole position and the horizontal grouting blind hole begins to overflow slurry, indicating that the liquid level has risen to this position, and then seal the horizontal grouting blind hole;

[0052] Step 5: Grouting the remaining height of the grouting hole network. A first funnel is set at the top of the first vertical hole. Grouting continues from the first funnel until the liquid level in the first vertical hole rises to the height of the Lth horizontal hole. The rebar consolidation material spreads through the Lth horizontal hole to the second, third, and Nth vertical holes at the same height. When the Lth horizontal hole begins to overflow from the open end away from the first vertical hole, the opening is sealed.

[0053] Step 6: Continue grouting until grout begins to overflow from the top of the first vertical hole, indicating that the first vertical hole is full, and then seal the first vertical hole;

[0054] Step seven, pause and observe whether the liquid level in the second vertical hole, the third vertical hole...the Nth vertical hole at the top hole at the same height has dropped. If it has not dropped, it means it is full, and then each vertical rebar hole is blocked; if it has dropped, it means it is not full, then a second funnel, a third funnel...the Nth funnel is correspondingly set at the top of each vertical rebar hole until the vertical rebar hole is full, and then the top of each vertical rebar hole is blocked.

[0055] Furthermore, in step 1, each exhaust grouting opening of the vertical rebar planting hole is expanded to form a top grouting hole, which is respectively a first grouting hole, a second grouting hole, a third grouting hole, ... an Nth grouting hole;

[0056] Step 4: The horizontal grouting blind hole becomes an observation hole, and the grouting nozzle is directly inserted into the first expanded hole for grouting.

[0057] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0058] First, during construction, the present invention utilizes a designed grouting hole network structure to integrate the existing two-way rebar planting double grouting construction into a single two-way rebar planting construction, eliminating the need for two-way construction on the corbel.

[0059] Secondly, during construction, the present invention can inject glue from top to bottom for vertically penetrating rebar planting, and realize the connected grouting of slurry through the grouting hole network structure. The grouting hole network structure utilizes the principle of imitating a communicating vessel to ensure that each hole is filled.

[0060] Third, the grouting hole network structure designed in the present invention can increase the number of exhaust holes in the grouting while serving as reinforcement holes, reduce the air during the grouting process, and ensure the consolidation quality after grouting and the construction quality of the reinforcement of the cross-section frame column.

[0061] Fourth, the present invention designs the grouting hole network structure, so that after the corbel is rebar-planted in two directions, the coordinated force of the horizontal and vertical reinforcements can be achieved according to the design, without the need to plant rebar in two directions at intervals on the corbel.

[0062] Fifth, the construction method of the present invention is easy and intuitive to operate. Construction can be completed by simply grouting the first vertical hole. If necessary, each horizontal open end can be sealed while grouting to ensure construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The present invention will be further described in detail below with reference to the accompanying drawings.

[0064] Figure 1 It is a schematic design diagram of the in-situ widened column structure of the present invention.

[0065] Figure 2 It is a structural schematic diagram of the actual construction process of the through longitudinal reinforcement and the I-shaped through section within the corbel range of the in-situ widened column structure of the present invention.

[0066] Figure 3 yes Figure 2 Schematic diagram of the side structure of the through reinforcement and grouting hole network within the middle corbel range.

[0067] Figure 4 yes Figure 2 Schematic diagram of the front view of the structure of the through bars and grouting holes within the range of the middle corbel, and the double-end sealing of the horizontal reinforcement holes.

[0068] Figure 5 yes Figure 4 Another embodiment of the grouting hole network structure, that is, the second embodiment of the construction method, is a front view structural schematic diagram in which one end of the horizontal rebar hole is blocked and the other end is open.

[0069] Figure 6 It is a schematic diagram of the top view of the grouting hole network of the present invention.

[0070] Figure 7 It is a side structural schematic diagram of the grouting hole network of the present invention.

[0071] Figure 8 yes Figure 7 Schematic diagram of the AA horizontal cross-section structure.

[0072] Figure 9 yes Figure 7 Schematic diagram of the horizontal cross-section structure of the middle BB.

[0073] Figure 10 yes Figure 7 Schematic diagram of the horizontal cross-section structure of the CC.

[0074] Figure 11 yes Figure 8 Schematic diagram of the side view of the vertical section aa of the grouting hole network at the middle vertical reinforcement hole position.

[0075] Figure 12 yes Figure 9Schematic diagram of the side view of the vertical section of the grouting hole network bb at the middle vertical rebar planting hole position.

[0076] Figure 13 yes Figure 9 Schematic diagram of the front view of the grouting hole network at the center vertical reinforcement hole position.

[0077] Figure 14 yes Figure 10 Schematic diagram of the vertical section side view of the grouting hole network in the middle vertical rebar planting hole position (mm).

[0078] Figure 15 yes Figure 10 Schematic diagram of the front view of the grouting hole network at the center vertical reinforcement hole position.

[0079] Figure 16 1 is a schematic diagram of the construction process of step a in the first embodiment of the construction method.

[0080] Figure 17 This is a schematic diagram showing the completion of step b in the first embodiment of the construction method.

[0081] Figure 18 This is a schematic diagram showing the completion of step c in the first embodiment of the construction method.

[0082] Figure 19 This is a schematic diagram showing the completion of step f in the first embodiment of the construction method.

[0083] Figure 20 This is a schematic diagram showing the completion of step six in the first embodiment of the construction method.

[0084] Figure 21 It is a schematic diagram of grouting construction in the first embodiment of the construction method.

[0085] Figure 22 It is a schematic diagram of grouting construction in the second embodiment of the construction method.

[0086] Figure numbers: 1-original bent bracket column structure, 11-original column, 12-corbel, 2-widened column reinforcement, 21-widened longitudinal reinforcement, 211-tied longitudinal reinforcement, 212-through longitudinal reinforcement, 22-widened stirrups, 221-tied stirrups, 222-external U-shaped section, 223-I-shaped through section, 3-vertical anchor hole, 31-first vertical hole, 32-second vertical hole, 33-third vertical hole, 4-grouting compensation funnel, 41-first funnel, 42-second funnel , 42 - the third funnel, 5 - the horizontal connecting hole for grouting, 51 - the horizontal connecting hole for grouting at the lower side, 52 - the horizontal connecting hole for grouting at the upper side, 6 - the horizontal rebar hole, 61 - the first horizontal hole, 62 - the second horizontal hole, 63 - the third horizontal hole, 64 - the fourth horizontal hole, 65 - the fifth horizontal hole, 7 - the horizontal grouting blind hole, 8 - the rebar consolidation material, 9 - the grouting nozzle, 10 - the exhaust and grouting port, 101 - the first reaming hole, 102 - the second reaming hole, 103 - the third reaming hole. DETAILED DESCRIPTION

[0087] For example, see Figure 1 As shown, a bidirectional embedded reinforcement mesh grouting structure for widening a bent-frame corbel column comprises an original bent-frame corbel column structure 1 and an in-situ widened column structure. The original bent-frame corbel column structure comprises an original column 11 and a corbel 12. The in-situ widened column structure comprises widened column reinforcement bars 2 to be constructed. The widened column reinforcement bars are divided into widened longitudinal reinforcement bars 21 and widened stirrup bars 22 according to the load. The widened longitudinal reinforcement bars 21 are connected to the widened stirrup bars 22. The widened column reinforcement bars 2 are divided into two parts with the corbel as the boundary, namely, binding reinforcement outside the corbel range and through reinforcement within the corbel range.

[0088] See also Figure 1-5 As shown, the widened longitudinal reinforcement 21 includes the tied longitudinal reinforcement 211 outside the corbel range and a group of through longitudinal reinforcement 212 within the corbel range. The widened stirrups 22 include the tied stirrups 221 outside the corbel range and a group of through stirrups within the corbel range. The through stirrups are made of open stirrups, including an external U-shaped section 222 and a straight through section 223. Figure 2 As shown, there is an overlap length between the outer U-shaped section 222 and the straight-line through section 223 , and they need to be overlapped during actual construction.

[0089] The through longitudinal reinforcement 212 and the I-shaped through section 223 penetrate the embedded reinforcement in the corbel, the I-shaped through section 223 is located outside the through longitudinal reinforcement 212 and the two are connected in a mesh shape in a horizontal and vertical manner inside the corbel.

[0090] See also Figure 6-15As shown, a group of vertical rebar holes 3 are opened in the corbel 12 at the positions corresponding to the through longitudinal bars 212, and each through longitudinal bar 212 corresponds to each vertical rebar hole 3 and is inserted into the hole. The bottom of the vertical rebar hole 3 is blocked, and the top is opened to form an exhaust grouting port 10. The exhaust grouting port 10 is provided with a grouting compensation funnel 4. Two grouting horizontal connecting holes 5 that pass through both sides of the corbel 12 are also opened in the vertical plane where the vertical rebar holes 3 are located. The grouting horizontal connecting holes 5 connect the vertical rebar holes 3 in the horizontal plane where each hole is located horizontally in turn, and both ends of the grouting horizontal connecting holes 5 are blocked.

[0091] A group of horizontal rebar holes 6 are opened in the corbel 12 at the position corresponding to the I-shaped through section 223. The horizontal rebar holes 6 are located on the outside of the vertical rebar holes 3 and the outer half of the horizontal rebar holes 6 are connected to the vertical rebar holes 3. Each I-shaped through section 223 corresponds to each horizontal rebar hole 6 and penetrates into it.

[0092] A horizontal grouting blind hole 7 is also provided on the top of the corbel 12 , which connects the outside of the corbel with the outermost one of the vertical reinforcement holes 3 close to the side wall of the corbel. A grouting nozzle 9 is provided on the horizontal grouting blind hole 7 .

[0093] The grouting horizontal connecting hole 5, the horizontal rebar hole 6 and the horizontal grouting blind hole 7 are all connected with the vertical rebar hole 3 to form a grouting hole network. The rebar consolidation material 8 is filled into the grouting hole network from the grouting nozzle 9 and the grouting compensation funnel 4. The horizontal grouting blind hole 7 and the exhaust grouting port 10 are blocked when the rebar consolidation material 8 overflows. Both ends of the horizontal rebar hole 6 are blocked or one end is blocked and the other end is open. The open end is blocked when the rebar consolidation material 8 overflows.

[0094] In this embodiment, the vertical rebar hole 3 is a circular hole, and the horizontal grouting hole 5 is also a circular hole. The diameter of the horizontal grouting hole 5 is the same as that of the vertical rebar hole 3. The size of the vertical rebar hole 3 is 3mm-4mm larger than the diameter of the through-going longitudinal rebar 212. The horizontal rebar hole 6 is an oblong hole, and the size of the outer half of the horizontal rebar hole 6 is 3mm-4mm larger than the diameter of the straight-line through section 223.

[0095] There are N vertical rebar holes 3 in total, and in this embodiment, N=3. The vertical rebar holes 3 are arranged within the range of the corbel in order of distance from the horizontal grouting blind hole 7, namely, the first vertical hole 31, the second vertical hole 32, and the third vertical hole 33. The horizontal grouting blind hole 7 is connected to the first vertical hole 31. The grouting compensation funnels corresponding to the exhaust grouting port 10 of the vertical rebar hole 3 are respectively, namely, the first funnel 41, the second funnel 42, and the third funnel 43.

[0096] There are L horizontal rebar holes 6 in total, and in this embodiment, L=5. From bottom to top within the corbel range, there are the first horizontal hole 61, the second horizontal hole 62, the third horizontal hole 63, the 6L-1 horizontal hole is the fourth horizontal hole 64, and the 6L horizontal hole is the fifth horizontal hole 65. There are at least two grouting horizontal connecting holes 5, including a lower grouting horizontal connecting hole 51 and an upper grouting horizontal connecting hole 52. The lower grouting horizontal connecting hole 51 is arranged on the corbel between the first horizontal hole 61 and the second horizontal hole 62. The horizontal grouting blind hole 7 is arranged on the corbel above the upper grouting horizontal connecting hole 52 and between the fourth horizontal hole 64 and the fifth horizontal hole 65.

[0097] In this embodiment, the anchoring material 8 is polymer mortar, anchoring glue or steel injection glue.

[0098] See also Figure 4 As shown, the first embodiment of the reinforcement construction method of the bent bracket column widening bidirectional reinforcement mesh grouting structure has the following construction steps:

[0099] Preparation work before rebar planting: Grind the upper and lower surfaces of the corbel column to expose the new concrete surface, and then apply a layer of interface agent; use a steel bar detector or manual chiseling to find out the arrangement position of the steel bars in the original bent corbel column structure 1, including the original column 11 and corbel 12;

[0100] Step 1: According to the steel bar design of the widened column steel bar 2, vertical reinforcement holes 3 and horizontal reinforcement holes 6 are opened on the corresponding positions of the corbels 12;

[0101] Step 2: Design the positions of the horizontal connecting holes 5 and the horizontal blind holes 7 for grouting according to the height of the corbel 12 and the arrangement spacing of the widened stirrups 22 and construct them; the vertical rebar holes 3, the horizontal rebar holes 6, the horizontal connecting holes 5 for grouting and the horizontal blind holes 7 form a grouting hole network, and the horizontal rebar holes 6 connected to the vertical rebar holes 3 and the horizontal connecting holes 5 for grouting added in the horizontal direction can connect the vertical rebar holes 3 to increase the channel for grouting operation;

[0102] Step three, tie each binding longitudinal reinforcement 211 in place, pass each through longitudinal reinforcement 212 through each vertical reinforcement hole 3 and tie it in place, each widened longitudinal reinforcement can be fixedly connected to the next layer of longitudinal reinforcement, tie each binding stirrup 221 in place, then tie each external U-shaped segment 222 in place, and each I-shaped through segment 223 passes through each horizontal reinforcement hole 6, each external U-shaped segment 222 and each I-shaped through segment 223 are tied as a whole to form each through stirrup; then seal the bottom of the vertical reinforcement hole 3 and the two ends of the grouting horizontal connecting hole 5;

[0103] Step 4: Insert the grouting nozzle 9 into the horizontal grouting blind hole 7, and start injecting the rebar consolidation material 8 into the first vertical hole 31 connected to the horizontal grouting blind hole 7. During the injection process, pressure grouting is adopted. The grouting is injected at a uniform speed to ensure the material penetration and flow time. During the grouting process, exhaust is carried out through the exhaust grouting port 10;

[0104] The injection process of the reinforcement consolidation material is as follows:

[0105] Step a: The reinforcement consolidation material 8 flows along the wall of the first vertical hole 31 and the surface of the steel bar to the bottom of the first vertical hole 31. After the bottom is filled, the liquid level in the first vertical hole 31 rises to the height of the first horizontal hole 61. Figure 16 As shown;

[0106] Step b, the reinforcing material 8 is connected to the second vertical hole 32 and the third vertical hole 33 at the same height through the first horizontal hole 61 until the liquid levels in the first vertical hole 31, the second vertical hole 32 and the third vertical hole 33 are at the same height, see Figure 17 As shown;

[0107] Step c: Continue grouting until the liquid level in the first vertical hole 31 rises to the height of the lower grouting horizontal connecting hole 51. The rebar consolidation material 8 diffuses through the lower grouting horizontal connecting hole 51 to the second vertical hole 32 and the third vertical hole 33 at the same height, until the liquid levels in the first vertical hole 31, the second vertical hole 32, and the third vertical hole 33 are at the same height. Figure 18 As shown;

[0108] Step d: Continue grouting until the liquid level in the first vertical hole 31 rises to the height of the second horizontal hole 62, and the rebar consolidation material 8 diffuses through the second horizontal hole 62 to the adjacent second vertical hole 32 and the third vertical hole 33 at the same height, until the liquid levels in the first vertical hole 31, the second vertical hole 32, and the third vertical hole 33 are at the same height.

[0109] Step e: Continue grouting until the liquid level in the first vertical hole 31 rises to the next horizontal rebar hole 6 or the next grouting horizontal connecting hole 5, and repeat step c or d;

[0110] Step f, continue grouting until the liquid level reaches the position of the horizontal grouting blind hole 7, and the horizontal grouting blind hole 7 begins to overflow slurry, indicating that the liquid level has risen to this position. At this time, the fourth horizontal hole 64 has been filled, and then the horizontal grouting blind hole 7 is blocked. Figure 19 As shown;

[0111] Step 5: Grouting is performed for the remaining height of the grouting hole network. The grouting compensation funnel is higher than the top of the corbel. The first funnel 41 is set at the top of the first vertical hole 31. Grouting is continued from the first funnel 41 until the liquid level in the first vertical hole 31 rises to the height of the fifth horizontal hole 65. The rebar consolidation material 8 spreads through the fifth horizontal hole to the second vertical hole 32 and the third vertical hole 33 at the same height. The grouting begins to overflow from the top of the first vertical hole 31, indicating that the first vertical hole 31 is full. The first vertical hole 31 is then sealed.

[0112] Step 6: Pause and observe whether the liquid level in the second vertical hole 32 and the third vertical hole 33 drops at the top hole at the same height. If it does not drop, it means it is full, and then each vertical rebar hole 3 is blocked; if it drops, it means it is not full, then a second funnel 42 and a third funnel 43 are correspondingly set at the top of each vertical rebar hole 3 until the vertical rebar hole 3 is filled, and then the top of each vertical rebar hole 3 is blocked, see Figure 20 shown.

[0113] See also Figure 21 As shown, the second embodiment of the reinforcement construction method of the bent bracket column widened bidirectional reinforcement mesh grouting structure is different from the first embodiment in that:

[0114] In step 1, each exhaust grouting port 10 of the vertical rebar planting hole 3 is expanded to form a top grouting hole, namely a first reaming hole 101, a second reaming hole 102, and a third reaming hole 103;

[0115] Step 4: The horizontal grouting blind hole 7 becomes an observation hole, and the grouting nozzle 9 is directly inserted into the first expanded hole 101 for grouting.

[0116] See also Figure 5 As shown, the third embodiment of the reinforcement construction method of the widened bidirectional reinforcement mesh grouting structure of the bent corbel column is different from the first embodiment in that one end of the horizontal reinforcement hole is blocked and the other end is open. The construction steps are as follows:

[0117] Step 1: According to the steel bar design of the widened column steel bar 2, vertical reinforcement holes 3 and horizontal reinforcement holes 6 are opened on the corresponding positions of the corbels 12;

[0118] Step 2: Design and construct the positions of the horizontal grouting connecting holes 5 and the horizontal grouting blind holes 7 according to the height of the corbel 12 and the spacing of the widened stirrups 22;

[0119] Step three, tie each binding longitudinal reinforcement 211 in place, pass each through longitudinal reinforcement 212 through each vertical reinforcement hole 3 and tie it in place, each widened longitudinal reinforcement can be fixedly connected to the next layer of longitudinal reinforcement, tie each binding stirrup 221 in place, then tie each external U-shaped segment 222 in place, and each I-shaped through segment 223 passes through each horizontal reinforcement hole 6, each external U-shaped segment 222 and each I-shaped through segment 223 are tied as a whole to form each through stirrup; then seal the bottom of the vertical reinforcement hole 3 and the two ends of the grouting horizontal connecting hole 5;

[0120] Step 4: Insert the grouting nozzle into the horizontal grouting blind hole 7, and start injecting the rebar consolidation material 8 into the first vertical hole 31 connected to the horizontal grouting blind hole 7. During the injection process, pressure grouting is adopted. The grouting is injected at a uniform speed to ensure the material penetration and flow time. During the grouting process, exhaust is carried out through the exhaust grouting port 10 and the open end of the horizontal rebar hole 6;

[0121] The injection process of the reinforcement consolidation material is as follows:

[0122] Step a: The reinforcing bar consolidation material 8 flows along the hole wall and the surface of the steel bar of the first vertical hole to the bottom of the first vertical hole. After the bottom is filled, the liquid level in the first vertical hole rises to the height of the first horizontal hole 61;

[0123] Step b: The reinforcing material 8 diffuses through the first horizontal hole 61 to the second vertical hole 32 and the third vertical hole 33 at the same height. When the slurry begins to overflow from the open end of the first horizontal hole 61 away from the first vertical hole 31, the opening is blocked;

[0124] Step c: Continue grouting until the liquid level in the first vertical hole 31 rises to the height of the lower grouting horizontal connecting hole 51, and the rebar consolidation material 8 diffuses through the lower grouting horizontal connecting hole 51 to the second vertical hole 32 and the third vertical hole 33 at the same height, until the liquid levels in the first vertical hole 31, the second vertical hole 32, and the third vertical hole 3 are at the same height.

[0125] Step d: Continue grouting until the liquid level in the first vertical hole 31 rises to the height of the second horizontal hole 62. The rebar consolidation material 8 diffuses through the second horizontal hole 62 to the adjacent second vertical hole 32 and third vertical hole 33 at the same height. When the second horizontal hole 62 begins to overflow from the open end of the first vertical hole 31, the opening is sealed.

[0126] Step e: Continue grouting until the liquid level in the first vertical hole 31 rises to the next horizontal rebar hole 6 or the next grouting horizontal connecting hole 5, and repeat step c or d;

[0127] Step f, continue grouting until the liquid level reaches the position of the horizontal grouting blind hole 7, and the horizontal grouting blind hole 7 begins to overflow slurry, indicating that the liquid level has risen to this position, and then the horizontal grouting blind hole 7 is blocked;

[0128] Step 5: Grouting is performed for the remaining height of the grouting hole network. A first funnel 41 is set at the top of the first vertical hole 31. Grouting is continued from the first funnel 41 until the liquid level in the first vertical hole 31 rises to the height of the fifth horizontal hole 65. The rebar consolidation material 8 spreads through the fifth horizontal hole 65 to the second vertical hole 32 and the third vertical hole 33 at the same height. When the grout begins to overflow from the open end of the fifth horizontal hole 65 away from the first vertical hole 31, the opening is sealed.

[0129] Step 6: Continue grouting until grout begins to overflow from the top of the first vertical hole 31, indicating that the first vertical hole 31 is full, and then seal the first vertical hole 31;

[0130] Step seven, pause and observe whether the liquid level in the second vertical hole 32 and the third vertical hole 33 at the top hole liquid level at the same height drops. If it does not drop, it means it is full, and then each vertical rebar hole 3 is blocked; if it drops, it means it is not full, then a second funnel 42 and a third funnel 43 are correspondingly set at the top of each vertical rebar hole 3 until the vertical rebar hole 3 is filled, and then the top of each vertical rebar hole 3 is blocked.

[0131] See also Figure 22 As shown, the fourth embodiment of the reinforcement construction method of the bent bracket column widened bidirectional reinforcement mesh grouting structure is different from the third embodiment in that:

[0132] In step 1, each exhaust grouting port 10 of the vertical rebar planting hole 3 is expanded to form a top grouting hole, namely a first reaming hole 101, a second reaming hole 102, and a third reaming hole 103;

[0133] Step 4: The horizontal grouting blind hole 7 becomes an observation hole, and the grouting nozzle 9 is directly inserted into the first expanded hole 101 for grouting.

[0134] During all construction, all holes must be drilled with an electric drill. After drilling, clean the hole with a brush. Then, use clean, oil-free compressed air or a hand-operated blower (like a "pick-up" or "push-up"). Repeat this process at least three times until all dust and debris are gone. If necessary, clean the hole walls with clean cotton yarn or a brush dipped in a small amount of industrial acetone to ensure good adhesion between the hole wall and the rebar consolidation material 8. The grouting compensating funnel must be securely tied to the through-longitudinal reinforcement 212.

[0135] After the reinforcement consolidation material 8 is injected, it generally needs to be still for more than 12 hours to ensure that the sealing material solidifies. If there is leakage at the bottom of the vertical reinforcement hole or the horizontal reinforcement hole, the horizontal grouting connecting hole or the end of the horizontal grouting blind hole, it can be sealed with fast-hardening cement.

[0136] After the bidirectional reinforcement is installed at the corbel, i.e., after grouting is completed, the grout should be cured as required. Subsequent construction work can be carried out after the design strength is reached. During the grouting process and the curing period after grouting, a dedicated person should be assigned to conduct inspections and implement emergency measures in a timely manner if any leakage is found.

Claims

1. A bidirectional reinforcement mesh grouting structure for widening bent corbel columns, characterized by: The invention comprises an original bent-frame corbel column structure (1) and an in-situ widened column structure. The original bent-frame corbel column structure comprises an original column (11) and a corbel (12). The in-situ widened column structure comprises widened column reinforcement (2) to be constructed. The widened column reinforcement is divided into widened longitudinal reinforcement (21) and widened stirrup reinforcement (22) according to the load. The widened longitudinal reinforcement (21) is connected to the widened stirrup reinforcement (22). The widened column reinforcement (2) is divided into two parts with the corbel as the boundary, namely, a binding reinforcement outside the corbel range and a through reinforcement within the corbel range. The widened longitudinal reinforcement (21) includes the tied longitudinal reinforcement (211) outside the corbel range and a group of through longitudinal reinforcement (212) within the corbel range. The widened stirrups (22) include the tied stirrups (221) outside the corbel range and a group of through stirrups within the corbel range. The through stirrups are made of open stirrups, including an external U-shaped section (222) and a straight through section (223). The through longitudinal reinforcement (212) and the straight through section (223) penetrate the reinforcement in the corbel, the straight through section (223) is located outside the through longitudinal reinforcement (212) and the two are connected in a mesh-like manner in the corbel. A group of vertical reinforcement holes (3) are opened in the corbel (12) at positions corresponding to the through longitudinal reinforcements (212). Each through longitudinal reinforcement (212) corresponds to each vertical reinforcement hole (3) and is passed through. The bottom of the vertical reinforcement hole (3) is blocked, and the top is opened to form an exhaust grouting port (10). A grouting compensation funnel (4) is provided on the exhaust grouting port (10). Two grouting horizontal connecting holes (5) are opened on both sides of the corbel (12) in the vertical plane where the vertical reinforcement holes (3) are located. The grouting horizontal connecting holes (5) connect the vertical reinforcement holes (3) in the horizontal plane where each hole is located in turn. Both ends of the grouting horizontal connecting holes (5) are blocked. A group of horizontal reinforcement holes (6) are opened in the position of the corbel (12) corresponding to the I-shaped through section (223). The horizontal reinforcement holes (6) are located outside the vertical reinforcement holes (3) and the outer half of the horizontal reinforcement holes (6) is connected to the vertical reinforcement holes (3). Each I-shaped through section (223) corresponds to each horizontal reinforcement hole (6) and penetrates. A horizontal grouting blind hole (7) is also provided on the top of the corbel (12), and the horizontal grouting blind hole (7) connects the outside of the corbel with the outermost one of the vertical reinforcement holes (3) close to the side wall of the corbel, and a grouting nozzle (9) is provided on the horizontal grouting blind hole (7). The three holes, namely, the horizontal grouting connecting hole (5), the horizontal rebar planting hole (6) and the horizontal grouting blind hole (7), are all connected with the vertical rebar planting hole (3) to form a grouting hole network. The rebar planting consolidation material (8) is filled into the grouting hole network from the grouting nozzle (9) and the grouting compensation funnel (4). The horizontal grouting blind hole (7) and the exhaust grouting port (10) are blocked when the rebar planting consolidation material (8) overflows. Both ends of the horizontal rebar planting hole (6) are blocked or one end is blocked and the other end is open. The open end is blocked when the rebar planting consolidation material (8) overflows.

2. The bidirectional reinforcement mesh grouting structure for widening the bent corbel column according to claim 1 is characterized in that: The vertical reinforcement hole (3) is a circular hole, and the grouting horizontal connecting hole (5) is also a circular hole. The diameter of the grouting horizontal connecting hole (5) is the same as the diameter of the vertical reinforcement hole (3). The size of the vertical reinforcement hole (3) is larger than the diameter of the through longitudinal reinforcement (212) by 3mm-4mm.

3. The bidirectional reinforcement mesh grouting structure for widening the bent corbel column according to claim 1 or 2 is characterized in that: The horizontal reinforcement hole (6) is an oblong hole, and the size of the outer half of the horizontal reinforcement hole (6) is larger than the diameter of the straight-line through section (223) by 3 mm to 4 mm.

4. The bidirectional reinforcement mesh grouting structure for widening the bent corbel column according to claim 3 is characterized by: There are N vertical rebar holes (3) in total. The vertical rebar holes (3) are arranged within the range of the corbel in order from near to far according to the distance from the horizontal grouting blind hole (7), namely the first vertical hole (31), the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole. The horizontal grouting blind hole (7) is connected to the first vertical hole (31). The grouting compensation funnels corresponding to the exhaust grouting ports (10) of the vertical rebar holes (3) are arranged in order, namely the first funnel (41), the second funnel (42), the third funnel (43) ... the Nth funnel.

5. The bidirectional reinforcement mesh grouting structure for widening the bent corbel column according to claim 4 is characterized in that: There are L horizontal rebar holes (6) in total, and the range of the corbel is arranged from bottom to top in the order of the first horizontal hole (61), the second horizontal hole (62), ... the L-1st horizontal hole, and the Lth horizontal hole. There are at least two grouting horizontal connecting holes (5), including a lower grouting horizontal connecting hole (51) and an upper grouting horizontal connecting hole (52). The lower grouting horizontal connecting hole (51) is arranged on the corbel between the first horizontal hole (61) and the second horizontal hole (62). The horizontal grouting blind hole (7) is arranged above the upper grouting horizontal connecting hole (52) and on the corbel between the L-1st horizontal hole and the Lth horizontal hole.

6. The bidirectional reinforcement mesh grouting structure for widening the bent corbel column according to claim 1 is characterized in that: The anchoring consolidation material (8) is polymer mortar, anchoring glue or steel glue.

7. A method for rebar planting construction using the bidirectional rebar planting mesh grouting structure for widening the bent corbel column according to claim 5, characterized in that: The construction steps are as follows: Step 1: according to the steel bar design of the widened column steel bar (2), vertical steel bar planting holes (3) and horizontal steel bar planting holes (6) are opened on the corbels (12) at corresponding positions; Step 2: Design the positions of the horizontal grouting connecting holes (5) and the horizontal grouting blind holes (7) and construct them according to the height of the corbel (12) and the arrangement spacing of the widened stirrups (22); Step 3: tie each tied longitudinal reinforcement (211) in place, pass each through longitudinal reinforcement (212) through each vertical reinforcement hole (3) and tie it in place, tie each tied stirrup (221) in place, then tie each external U-shaped segment (222) in place, and pass each I-shaped through segment (223) through each horizontal reinforcement hole (6), then tie each external U-shaped segment (222) and each I-shaped through segment (223) into one body to form each through stirrup; then seal the bottom of the vertical reinforcement hole (3) and both ends of the grouting horizontal connecting hole (5); Step 4: insert the grouting nozzle (9) into the horizontal grouting blind hole (7), and start injecting the rebar consolidation material (8) into the first vertical hole (31) connected to the horizontal grouting blind hole (7). During the injection process, pressure grouting is used. The grouting is injected at a uniform speed to ensure the material penetration and flow time. During the grouting process, exhaust is carried out through the exhaust grouting port (10); The injection process of the reinforcement consolidation material is as follows: Step a, the reinforcement consolidation material (8) flows along the hole wall of the first vertical hole (31) and the surface of the reinforcement to the bottom of the first vertical hole (31). After the bottom is filled, the liquid level in the first vertical hole (31) rises to the height position of the first horizontal hole (61); Step b, the rebar-embedded consolidation material (8) diffuses through the first horizontal hole (61) to the second vertical hole (32), the third vertical hole (33), ... the Nth vertical hole at the same height, until the liquid levels in the first vertical hole (31), the second vertical hole (32), the third vertical hole (33), ... the Nth vertical hole are at the same height; Step c, continuing grouting until the liquid level in the first vertical hole (31) rises to the height of the lower grouting horizontal connecting hole (51), and the rebar-embedded consolidation material (8) diffuses through the lower grouting horizontal connecting hole (51) to the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the same height, until the liquid levels in the first vertical hole (31), the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole are at the same height; Step d, continuing grouting until the liquid level in the first vertical hole (31) rises to the height of the second horizontal hole (62), and the rebar consolidation material (8) diffuses through the second horizontal hole (62) to the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the same height that are connected nearby, until the liquid levels in the first vertical hole (31), the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole are at the same height; Step e, continue grouting until the liquid level in the first vertical hole (31) rises to the next horizontal rebar hole (6) or the next grouting horizontal connecting hole (5), and repeat step c or d; Step f, continue grouting until the liquid level reaches the position of the horizontal grouting blind hole (7), and the horizontal grouting blind hole (7) begins to overflow slurry, indicating that the liquid level has risen to this position. At this time, the L-1 horizontal hole has been filled, and then the horizontal grouting blind hole (7) is blocked; Step 5, grouting the remaining height of the grouting hole network, setting a first funnel (41) at the top of the first vertical hole (31), continuing grouting from the first funnel (41), so that the liquid level in the first vertical hole (31) rises to the height position of the Lth horizontal hole, and the anchoring material (8) spreads through the Lth horizontal hole to the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the same height position connected nearby, until the grout begins to overflow from the top of the first vertical hole (31), indicating that the first vertical hole (31) has been filled, and then the first vertical hole (31) is blocked; Step six, pause and observe whether the liquid level in the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the top hole liquid level at the same height drops. If it does not drop, it means it is full, and then each vertical rebar planting hole (3) is blocked; if it drops, it means it is not full, then a second funnel (42), a third funnel (43) ... the Nth funnel is correspondingly set at the top of each vertical rebar planting hole (3) until the vertical rebar planting hole (3) is filled, and then the top of each vertical rebar planting hole (3) is blocked.

8. The reinforcing bar planting construction method of the widened two-way reinforcing bar planting mesh grouting structure of the bent corbel column according to claim 7 is characterized by: In step 1, each exhaust grouting port (10) of the vertical rebar planting hole (3) is enlarged to form a top grouting hole, which is a first enlarged hole (101), a second enlarged hole (102), a third enlarged hole (103) ... an Nth enlarged hole; Step 4: The horizontal grouting blind hole (7) becomes an observation hole, and the grouting nozzle (9) is directly inserted into the first expansion hole (101) for grouting.

9. A method for rebar planting construction using the bidirectional rebar planting mesh grouting structure for widening the bent corbel column according to claim 5, characterized in that: The construction steps are as follows: Step 1: according to the steel bar design of the widened column steel bar (2), vertical steel bar planting holes (3) and horizontal steel bar planting holes (6) are opened on the corbels (12) at corresponding positions; Step 2: Design the positions of the horizontal grouting connecting holes (5) and the horizontal grouting blind holes (7) and construct them according to the height of the corbel (12) and the arrangement spacing of the widened stirrups (22); Step 3: tie each tied longitudinal reinforcement (211) in place, pass each through longitudinal reinforcement (212) through each vertical reinforcement hole (3) and tie it in place, tie each tied stirrup (221) in place, then tie each external U-shaped segment (222) in place, and pass each I-shaped through segment (223) through each horizontal reinforcement hole (6), then tie each external U-shaped segment (222) and each I-shaped through segment (223) into one body to form each through stirrup; then seal the bottom of the vertical reinforcement hole (3) and both ends of the grouting horizontal connecting hole (5); Step 4: insert the grouting nozzle into the horizontal grouting blind hole (7), and start injecting the anchor bolt consolidation material (8) into the first vertical hole (31) connected to the horizontal grouting blind hole (7). During the injection process, pressure grouting is used. The grouting is injected at a uniform speed to ensure the material penetration and flow time. During the grouting process, exhaust is carried out through the exhaust grouting port (10) and the open end of the horizontal anchor bolt hole (6); The injection process of the reinforcement consolidation material is as follows: Step a, the reinforcement consolidation material (8) flows along the hole wall of the first vertical hole and the surface of the reinforcement to the bottom of the first vertical hole. After the bottom is filled, the liquid level in the first vertical hole rises to the height position of the first horizontal hole (61); Step b, the rebar consolidation material (8) diffuses through the first horizontal hole (61) to the second vertical hole (32), the third vertical hole (33), ... the Nth vertical hole at the same height, and when the first horizontal hole (61) starts to overflow the open end away from the first vertical hole (31), the opening is blocked; Step c, continuing grouting until the liquid level in the first vertical hole (31) rises to the height of the lower grouting horizontal connecting hole, and the rebar-embedded consolidation material (8) diffuses through the lower grouting horizontal connecting hole (51) to the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the same height, until the liquid levels in the first vertical hole (31), the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole are at the same height; Step d, continue grouting until the liquid level in the first vertical hole (31) rises to the height of the second horizontal hole (62), and the rebar consolidation material (8) diffuses through the second horizontal hole (62) to the second vertical hole (32), the third vertical hole (33), ... the Nth vertical hole at the same height that are connected nearby, and when the second horizontal hole (62) starts to overflow the grout away from the open end of the first vertical hole (31), the opening is blocked; Step e, continue grouting until the liquid level in the first vertical hole (31) rises to the next horizontal rebar hole (6) or the next grouting horizontal connecting hole (5), and repeat step c or d; Step f, continue grouting until the liquid level reaches the position of the horizontal grouting blind hole (7), and the horizontal grouting blind hole (7) begins to overflow slurry, indicating that the liquid level has risen to this position, and then seal the horizontal grouting blind hole (7); Step 5: Grouting the remaining height of the grouting hole network, setting a first funnel (41) at the top of the first vertical hole (31), continuing grouting from the first funnel (41), so that the liquid level in the first vertical hole (31) rises to the height position of the Lth horizontal hole, and the anchoring material (8) spreads through the Lth horizontal hole to the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the same height position connected nearby, and when the Lth horizontal hole starts to overflow the grout away from the open end of the first vertical hole (31), the opening is blocked; Step six, continue grouting until the top of the first vertical hole (31) begins to overflow with slurry, indicating that the first vertical hole (31) has been filled, and then seal the first vertical hole (31); Step seven, pause and observe whether the liquid level in the second vertical hole (32), the third vertical hole (33) ... the Nth vertical hole at the top hole liquid level at the same height drops, if it does not drop, it means it is full, then each vertical rebar hole (3) is blocked; if it drops, it means it is not full, then a second funnel (42), a third funnel (43) ... the Nth funnel is correspondingly set at the top of each vertical rebar hole (3) until the vertical rebar hole (3) is filled, and then the top of each vertical rebar hole (3) is blocked.

10. The method for rebar planting construction of a bidirectional rebar planting mesh grouting structure for widening bent corbel columns according to claim 9, characterized in that: In step 1, each exhaust grouting port (10) of the vertical rebar planting hole (3) is enlarged to form a top grouting hole, which is a first enlarged hole (101), a second enlarged hole (102), a third enlarged hole (103) ... an Nth enlarged hole; Step 4: The horizontal grouting blind hole (7) becomes an observation hole, and the grouting nozzle (9) is directly inserted into the first expansion hole (101) for grouting.

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