Connecting structure of column winding type enclosure wall tie bars and construction method

Abstract

The invention provides a connecting structure and a construction method of a column winding type enclosure wall tie bar, and relates to the technical field of constructional engineering.The connecting structure comprises an embedded sleeve, the tie bar, a first filling material and a second filling material, the two ends of the embedded sleeve extend to the corresponding positions of an upper tie bar layer and a lower tie bar layer of the enclosure wall correspondingly. The tie bar penetrates through the embedded sleeve, and the two ends of the tie bar are located in the upper tie bar layer and the lower tie bar layer respectively; the first filling material is filled in the embedded sleeve; the second filling material is paved in the upper-layer tie bar layer and the lower-layer tie bar layer, and the two ends of the tie bars are wrapped and fixed by the second filling material. The method has the beneficial effects that the drilling procedure of traditional post-embedded steel bars is omitted, steel bar embedding glue does not need to be used, manpower and material resources are saved, and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a connection structure and construction method for tie bars of a column-wrapped enclosure wall. Background Technology

[0002] In housing construction projects, frame structures are widely used. The columns (including structural columns) of the frame structure are usually connected to the enclosure walls with tie bars to enhance the integrity and seismic performance of the enclosure walls.

[0003] Currently, tie bars are mostly installed post-installed, that is, after the frame structure column (including structural column) is constructed and reaches the specified strength, holes are drilled at the corresponding positions of the column, and then tie bars are installed by anchoring.

[0004] The applicant has discovered that the prior art has at least the following technical problems:

[0005] On the one hand, it increases construction costs, with the additional costs mainly reflected in the labor costs of concrete drilling and the material costs of rebar adhesive; on the other hand, the drilling process generates dust pollution, which endangers the health of construction workers. At the same time, drilling operations involve electrical operations, which pose certain safety hazards, and the construction procedures are relatively complicated and the construction efficiency is low.

[0006] Therefore, there is an urgent need for a connection structure and construction method for tie bars around columns in retaining walls to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a connection structure and construction method for tie bars in a column-mounted retaining wall, addressing the problems of post-installed tie bars in existing technologies. Firstly, this increases construction costs, primarily due to labor costs for concrete drilling and material costs for anchoring adhesive. Secondly, the drilling process generates dust pollution, endangering the health of construction workers. Furthermore, drilling involves electrical operations, posing safety hazards, and the construction process is relatively cumbersome and inefficient. The preferred technical solutions provided by this invention offer numerous technical advantages, which are detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention provides a connection structure for tie bars in a column-wrapped enclosure wall, comprising an embedded sleeve, tie bars, a first filling material, and a second filling material, wherein:

[0010] The pre-embedded sleeve is pre-embedded in the frame column, and the two ends of the pre-embedded sleeve extend to the corresponding positions of the upper tie bar layer and the lower tie bar layer of the enclosure wall, respectively.

[0011] The tie bar penetrates the embedded sleeve, and the two ends of the tie bar are respectively located in the upper tie bar layer and the lower tie bar layer;

[0012] The first filling material is filled into the interior of the pre-embedded sleeve;

[0013] The second filler material is laid in the upper tie bar layer and the lower tie bar layer, and the second filler material wraps and fixes the two ends of the tie bar.

[0014] Preferably, it also includes an exhaust pipe, which is pre-installed at the lower end of the pre-embedded sleeve and communicates with the interior of the pre-embedded sleeve for discharging air from the pre-embedded sleeve during grouting.

[0015] Preferably, the exhaust pipe is a plastic hose.

[0016] Preferably, the embedded sleeve is an arc-shaped thin-walled sleeve.

[0017] Preferably, the first filler material is mortar or adhesive.

[0018] Preferably, the second filler material is mortar.

[0019] Preferably, the tie bar is a continuous steel bar, and the outer diameter of the tie bar forms a gap with the inner wall of the pre-embedded sleeve that can be filled by the first filling material.

[0020] A construction method for tie bars around a column-type retaining wall, based on the aforementioned connection structure of tie bars around a column-type retaining wall, includes the following steps:

[0021] S1: During the formwork erection of the frame column, the pre-embedded sleeve is pre-embedded according to the design position, so that its two ends correspond to the positions of the upper tie bar layer and the lower tie bar layer of the retaining wall; first, the lower end of the pre-embedded sleeve is sealed with a plastic cover, the pre-embedded sleeve is filled with sand, and then the upper end of the pre-embedded sleeve is sealed with a plastic cover.

[0022] S2: After the concrete of the frame column is poured and reaches the demolding strength, remove the formwork, remove the plastic covers at both ends of the embedded sleeve, and clean and unclog the inside of the embedded sleeve.

[0023] S3: When constructing the brick wall, insert the tie bar from the lower end of the pre-embedded sleeve until the upper end of the tie bar extends to the corresponding position of the upper tie bar layer, and the lower end of the tie bar is located in the lower tie bar layer of the retaining wall; install an exhaust pipe communicating with the interior of the pre-embedded sleeve at the lower end of the sleeve.

[0024] S4: At the brick wall construction location corresponding to the lower tie bar layer, lay the second filling material and wrap and fix the lower end of the tie bar;

[0025] S5: Inject the first filling material into the pre-embedded sleeve, maintain the grouting pressure, and discharge the air in the sleeve through the vent pipe at the lower end. After filling is completed, remove the vent pipe and continue to lay brick wall upwards.

[0026] S6: When the brick wall is laid to the corresponding position of the upper tie bar layer, lay the second filling material and wrap and fix the upper end of the tie bar.

[0027] Preferably, in step S1, during the formwork erection of the frame column, the pre-embedded sleeve is fixed to the inside of the frame column formwork.

[0028] Preferably, in step S5, the first filling material is mortar or adhesive, and the pressure is kept stable during grouting until the filling material overflows from the vent pipe.

[0029] The connection structure for tie bars in a column-wrapped retaining wall provided by this invention involves pre-embedding sleeves within the frame columns. The two ends of the pre-embedded sleeves extend to corresponding positions in the upper and lower tie bar layers of the retaining wall, respectively. The tie bars penetrate the pre-embedded sleeves, with both ends located within the upper and lower tie bar layers. On one hand, this eliminates the drilling process required for traditional post-installed rebar installation and eliminates the need for rebar adhesive, saving manpower and resources, reducing construction costs, and ensuring the safety of construction personnel. On the other hand, the upper and lower tie bar layers can achieve self-locking through mutual force application, forming a continuous force transmission path. Compared to the single-point connection of traditional rebar installation, this significantly improves the overall connection between the retaining wall and the frame column, enhancing earthquake and crack resistance. The first filling material is used to fill the gap between the tie bar and the inner wall of the pre-embedded sleeve, forming a sealed isolation layer to block air and moisture from contacting the tie bar; the second filling material wraps both ends of the tie bar, providing double protection to prevent the tie bar from rusting. This solves the problem of water entering the gap after drilling holes in traditional rebar installation, which leads to rusting of the tie bar. The overall structure is simple and easy to use, and it can extend the service life of the connection structure between the enclosure wall and the frame column.

[0030] The construction method for reinforcing bars around columns provided by this invention eliminates the need for concrete drilling throughout the entire process, completely removing dust pollution from drilling and preventing construction workers from inhaling dust that could harm their occupational health. It also eliminates the need for drilling equipment such as electric hammers, thus avoiding electrical safety hazards. During construction, pre-embedded sleeves are sealed with sand to prevent sleeve blockage and reduce rework and cleaning time. The method is simple and yields excellent results. Compared to traditional rebar installation processes involving drilling, cleaning, grouting, rebar installation, and curing, this significantly shortens the construction cycle and improves construction efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a connection structure of the tie bar of the column-type retaining wall according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0034] Figure 3 The construction process of the tie bars for the column-type retaining wall. Figure 1 ;

[0035] Figure 4 The construction process of the tie bars for the column-type retaining wall. Figure 2

[0036] Figure 5 The construction process of the tie bars for the column-type retaining wall. Figure 3

[0037] Figure 6 The construction process of the tie bars for the column-type retaining wall. Figure 4

[0038] Figure 7 The construction process of the tie bars for the column-type retaining wall. Figure 5

[0039] Figure 8 The construction process of the tie bars for the column-type retaining wall. Figure 6 .

[0040] In the diagram: 1. Embedded sleeve; 2. Tie bar; 3. First filling material; 4. Second filling material; 5. Exhaust pipe; 6. Frame column; 7. Enclosure wall; 71. Upper tie bar layer; 72. Lower tie bar layer; 8. Plastic cover; 9. Sand; 10. Foundation; 11. Foundation beam. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] Figure 1 This is a structural schematic diagram of this embodiment. Figure 2 yes Figure 1 An enlarged structural diagram at point A in the middle, as shown below. Figure 1 and Figure 2 As shown, the present invention provides a connection structure for tie bars of a column-type enclosure wall, including a pre-embedded sleeve 1, tie bars 2, a first filling material 3 and a second filling material 4.

[0043] The embedded sleeve 1 is embedded in the frame column 6, and both ends of the embedded sleeve 1 extend to the corresponding positions of the upper tie bar layer 71 and the lower tie bar layer 72 of the retaining wall 7, respectively. The tie bar 2 penetrates the embedded sleeve 1, and both ends of the tie bar 2 are located in the upper tie bar layer 71 and the lower tie bar layer 72, respectively. On the one hand, it eliminates the drilling process of traditional post-installed rebar and does not require the use of rebar adhesive, saving manpower and resources, reducing construction costs, and ensuring the safety of construction personnel. On the other hand, the upper and lower tie bar layers can achieve self-locking through the mutual force exerted by the tie bar 2, forming a continuous force transmission path. Compared with the single-point connection of traditional rebar installation, it greatly improves the overall connection between the retaining wall 7 and the frame column 6, and enhances the seismic and crack resistance.

[0044] The first filling material 3 is filled inside the pre-embedded sleeve 1 to effectively protect the tie bar 2; the second filling material 4 is laid in the upper tie bar layer 71 and the lower tie bar layer 72, and the second filling material 4 wraps and fixes the two ends of the tie bar 2 to strengthen the fixing effect between the tie bar and the retaining wall and prevent it from loosening when under stress.

[0045] This connection structure for the tie bars of the surrounding retaining wall is achieved by pre-embedding sleeves 1 inside the frame columns 6. The two ends of the pre-embedding sleeves 1 extend to the corresponding positions of the upper tie bar layer 71 and the lower tie bar layer 72 of the retaining wall 7. The tie bars 2 penetrate the pre-embedding sleeves 1, and the two ends of the tie bars 2 are located in the upper tie bar layer 71 and the lower tie bar layer 72, respectively. On the one hand, this eliminates the drilling process of traditional post-installed rebar and eliminates the need for rebar adhesive, saving manpower and resources, reducing construction costs, and ensuring the safety of construction personnel. On the other hand, the upper and lower tie bar layers can achieve self-locking through the mutual force exerted by the tie bars 2, forming a continuous force transmission path. Compared with the single-point connection of traditional rebar installation, this significantly improves the overall connection between the retaining wall 7 and the frame columns 6, and enhances the earthquake resistance and crack resistance. The first filling material 3 is used to fill the gap between the tie bar 2 and the inner wall of the pre-embedded sleeve 1, forming a sealed isolation layer to block air and moisture from contacting the tie bar 2; the second filling material 4 wraps both ends of the tie bar, providing double protection to prevent the tie bar 2 from rusting, solving the problem that water can easily enter the gap after drilling the traditional rebar and cause the tie bar 2 to rust. The overall structure is simple and easy to use, and it can extend the service life of the connection structure between the enclosure wall 7 and the frame column 6.

[0046] As an optional implementation, an exhaust pipe 5 is also included. The exhaust pipe 5 is pre-installed at the lower end of the pre-embedded sleeve 1 and is connected to the interior of the pre-embedded sleeve 1 for discharging air from the pre-embedded sleeve 1 during grouting.

[0047] Preferably, in this embodiment, the exhaust pipe 5 is made of a lightweight plastic hose that can be quickly connected and fixed to the pre-embedded sleeve 1, and is inexpensive, easy to disassemble and assemble, and has good stability and flexibility.

[0048] By setting the exhaust pipe 5 to be connected to the inside of the pre-embedded sleeve 1, the air in the pre-embedded sleeve 1 can be actively discharged through the exhaust pipe 5 during grouting, avoiding the formation of voids due to air retention, ensuring that the first filling material 3 completely fills the gap between the tie bar 2 and the inner wall of the pre-embedded sleeve 1, eliminating weak points in the connection, and improving the connection strength between the tie bar 2 and the pre-embedded sleeve 1.

[0049] When in use, there is no need to rely on the experience of construction personnel to judge whether the filling is in place. The grouting progress can be intuitively grasped by the venting status of the vent pipe 5, avoiding quality problems such as loosening of the structure and rusting of tie bars due to incomplete filling, and reducing the rework rate.

[0050] As an optional implementation, the embedded sleeve 1 adopts an arc-shaped thin-walled sleeve. The inner wall of the arc-shaped sleeve has a smooth transition and no sharp corners, resulting in low resistance when the tie bar 2 is inserted. This avoids surface damage to the tie bar 2 caused by the sharp inner wall of the embedded sleeve 1, ensuring that the mechanical properties of the tie bar 2 are not affected, and further improving the load-bearing capacity of the connection structure. The thin-walled structure significantly reduces the amount of sleeve material used while ensuring the supporting strength and wear resistance of the embedded sleeve 1, thereby reducing production and transportation costs. At the same time, the embedded sleeve 1 is lightweight, making it easy to fix inside the template during pre-embedding, preventing template deformation or sleeve displacement due to excessive weight, and improving the pre-embedding positioning accuracy.

[0051] As an optional implementation, the tie bar 2 is a continuous steel bar, and the outer diameter of the tie bar 2 and the inner wall of the pre-embedded sleeve 1 form a gap that can be filled by the first filling material 3.

[0052] By using continuous steel bars for tie bars 2, without joints, the overall strength and toughness are high, which can effectively transfer the force of the tie bars in the upper and lower layers, realize the self-locking function, avoid the risk of fracture caused by stress concentration at the joints of traditional segmented tie bars, and improve the seismic bearing capacity of the connection structure.

[0053] The gap between the tie bar 2 and the inner wall of the pre-embedded sleeve 1 is adapted to the fluidity of the first filling material 3, ensuring that the first filling material 3 can flow smoothly and fill all gaps without dead corners or voids. This ensures a firm connection between the tie bar 2 and the pre-embedded sleeve 1, and completely blocks air and moisture from contacting the tie bar, maximizing the rust prevention effect.

[0054] In this embodiment, the first filling material 3 is mortar or adhesive. Mortar has good fluidity, is readily available, has a high cost-performance ratio, and can fully fill tiny gaps. After curing, it has stable strength and can effectively fix the tie bar and isolate air. Adhesive has strong permeability and can penetrate deep into the tiny gaps between the tie bar and the inner wall of the sleeve. After curing, it forms a high-strength adhesive layer, which can ensure the long-term stability of the connection structure.

[0055] The second filling material 4 is mortar. The mortar is made of the same material as the brick wall, and its coefficient of thermal expansion and contraction and shrinkage rate are similar. During long-term use, the difference in materials will not cause cracks between the wrapping layer and the brick wall or tie bars, ensuring the wrapping and fixing effect and preventing the tie bars from loosening.

[0056] This embodiment also provides a construction method for tie bars around a column-type retaining wall, based on the above-mentioned connection structure of tie bars around a column-type retaining wall, including the following steps:

[0057] S1: As Figure 3 As shown, during the formwork erection of the frame column 6, the pre-embedded sleeve 1 is pre-embedded according to the design position, so that its two ends correspond to the positions of the upper tie bar layer 71 and the lower tie bar layer 72 of the retaining wall 7; first, the lower end of the pre-embedded sleeve 1 is sealed with a plastic cover 8, and sand 9 is poured into the pre-embedded sleeve 1; then, the upper end of the pre-embedded sleeve 1 is sealed with a plastic cover 8.

[0058] Specifically, in this embodiment, during the formwork erection of the frame column 6, the pre-embedded sleeve 1 is fixed to the inside of the frame column formwork. During construction, the lower end of the pre-embedded sleeve 1 is sealed with a plastic cover 8. After the pre-embedded sleeve 1 is filled with sand 9, the upper end of the pre-embedded sleeve 1 is sealed with a plastic cover 8 to prevent pipe blockage during concrete pouring.

[0059] S2: As Figure 4 As shown, after the concrete of the frame column 6 is poured and reaches the demolding strength, the formwork is removed, the plastic covers 8 at both ends of the embedded sleeve 1 are removed, and the inside of the embedded sleeve 1 is cleaned and dredged.

[0060] S3: As Figure 5 As shown, during the brick wall construction, the tie bar 2 is inserted from the lower end of the pre-embedded sleeve 1 until the upper end of the tie bar 2 extends to the corresponding position of the upper tie bar layer 71, and the lower end of the tie bar 2 is located in the lower tie bar layer 72 of the retaining wall 7; an exhaust pipe 5 communicating with the interior is installed at the lower end of the pre-embedded sleeve 1.

[0061] During construction, the tie bar 2 extends from the lower end through the embedded sleeve 1 to the corresponding position of the upper tie bar layer 71, and the lower tie bar layer 72 is set according to the length of the tie bar. An exhaust pipe 5 communicating with the interior of the embedded sleeve 1 is installed at the lower end of the embedded sleeve 1 to discharge the air inside the embedded sleeve 1 during grouting.

[0062] S4: As Figure 6 As shown, at the brick wall construction position corresponding to the lower tie bar layer 72, the second filling material 4 is laid and the lower end of the tie bar 2 is wrapped and fixed; in this embodiment, the second filling material 4 is mortar.

[0063] S5: As Figure 7 As shown, the first filling material 3 is injected into the pre-embedded sleeve 1, and the grouting pressure is kept stable. The air in the sleeve is discharged through the vent pipe 5 at the lower end. After the filling is completed, the vent pipe 5 is removed. Continue to lay brick wall upwards. In this embodiment, the first filling material 3 can be mortar or adhesive. The pressure is kept stable during grouting until the first filling material 3 overflows from the vent pipe 5.

[0064] S6: As Figure 8 As shown, when the brick wall is laid to the corresponding position of the upper tie bar layer 71, the second filling material 4 is laid and the upper end of the tie bar 2 is wrapped and fixed.

[0065] This method of using reinforcing bars around columns for retaining walls eliminates the need for concrete drilling throughout the entire process, completely preventing dust pollution and protecting workers' occupational health from dust inhalation. It also eliminates the need for drilling equipment such as electric hammers, thus avoiding electrical safety hazards. During construction, pre-embedded sleeves are sealed with sand to prevent clogging and reduce rework and cleaning time. The method is simple and yields excellent results. Compared to traditional rebar installation methods involving drilling, cleaning, grouting, rebar installation, and curing, it significantly shortens the construction cycle and improves efficiency.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A connection structure for tie bars around a column-type enclosure wall, characterized in that, The utility model relates to a kind of embedded sleeve (1), tie (2), first filling material (3) and second filling material (4), wherein: The embedded sleeve (1) is embedded in frame column (6), and the both ends of the embedded sleeve (1) respectively extend to the upper tie layer (71) of enclosure wall (7), the lower tie layer (72) corresponding position; The tie (2) penetrates the embedded sleeve (1), and the both ends of the tie (2) are located in the upper tie layer (71), the lower tie layer (72) respectively; The first filling material (3) is filled in the inside of the embedded sleeve (1); The second filling material (4) is paved in the upper tie layer (71), the lower tie layer (72), and the second filling material (4) wraps and fixes the both ends of the tie (2).

2. A connecting structure of a tie-back of a column-encircling enclosure wall according to claim 1, characterized in that: It further includes exhaust pipe (5), the exhaust pipe (5) is preset in the lower end of the embedded sleeve (1), and the exhaust pipe (5) is communicated with the inside of the embedded sleeve (1), for discharging the air in the embedded sleeve (1) when grouting.

3. A tieback connection structure for a post and panel fence according to claim 2, wherein: The exhaust pipe (5) adopts plastic hose.

4. A tie-back connection for a post and panel fence according to any one of claims 1 to 3, wherein: The embedded sleeve (1) adopts arc thin-walled sleeve.

5. A tie-back connection for a post and panel fence according to any one of claims 1 to 3, wherein: The first filling material (3) is mortar or adhesive glue.

6. A tieback connection structure for a post and panel fence according to any one of claims 1 to 3, wherein: The second filling material (4) is mortar.

7. A tieback connection for a post and panel fence according to any one of claims 1 to 3, wherein: The tie (2) is through length reinforcing bar, and the outer diameter of the tie (2) and the inner wall of the embedded sleeve (1) form the gap that can be filled by the first filling material (3).

8. A construction method of a tieback around a columnar enclosure, the connecting structure of the tieback around the columnar enclosure according to any one of claims 1 to 7, characterized by: It includes the following steps: S1: in the process of frame column (6) formwork, embedded sleeve (1) is embedded according to design position, so that both ends correspond to the upper tie layer (71) of enclosure wall (7), the lower tie layer (72) position;First, plastic cover sheet (8) is used to close the lower end of embedded sleeve (1), fills sand (9) in embedded sleeve (1), then plastic cover sheet (8) is used to close the upper end of embedded sleeve (1); S2: after frame column (6) concrete pouring is completed and reaches the form removal strength, remove formwork, remove the plastic cover sheet (8) of both ends of embedded sleeve (1), clear hole in the inside of embedded sleeve (1); S3: when carrying out brick wall masonry construction, tie (2) is inserted from the lower end of the embedded sleeve (1), until the upper end of tie (2) extends to the upper tie layer (71) corresponding position, and the lower end of tie (2) is located in the lower tie layer (72) of enclosure wall (7);Install exhaust pipe (5) that is communicated with the inside of embedded sleeve (1) in the lower end of embedded sleeve (1); S4: in the lower tie layer (72) corresponding brick wall masonry position, pave second filling material (4) and wrap and fix the lower end of tie (2); S5: fill first filling material (3) in embedded sleeve (1), keep grouting pressure stable, exhaust pipe (5) in lower end is used to exhaust air in sleeve, remove exhaust pipe (5) after filling is completed;Continue to pave brick wall upwards; S6: when brick wall is paved to the upper tie layer (71) corresponding position, pave second filling material (4) and wrap and fix the upper end of tie (2).

9. A method of constructing a tieback for a post and panel fence according to claim 8 wherein: In step S1, the pre-embedded sleeve (1) is fixed to the inside of the frame column formwork during the formwork erection of the frame column (6).

10. The method of claim 8, wherein the method further comprises: providing a plurality of tieback anchors; and attaching the plurality of tieback anchors to the plurality of tieback anchors. In step S5, the first filling material (3) is mortar or adhesive glue, and the pressure is kept stable during grouting until the exhaust pipe (5) has filling material (3) overflowing.

Images