Grouting pipe connecting structure based on pulling-resistant and pressure-resistant cast-in-place pile layered annular post-grouting
By arranging multiple annular grouting pipes around the outer perimeter of the reinforcing cage and combining them with a longitudinal connection structure, the problem of uneven grouting was solved, achieving uniform distribution of grout in the cast-in-place pile and stability of the grouting process, thus improving the grouting effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-07
AI Technical Summary
The existing grouting pipes have uneven grouting effect, with excessive or insufficient grouting in some areas, and the grouting pressure is difficult to distribute evenly, which affects the overall grouting effect of the cast-in-place pile and may cause damage to the grouting pipes.
Multiple annular grouting pipes are arranged around the outer perimeter of the reinforcing cage and spaced apart along the axial direction of the reinforcing cage. Combined with the circumferential grouting holes of the annular grouting pipes, the longitudinal grouting pipes are connected to the annular grouting pipes to ensure uniform grout distribution. The stable connection structure also improves the controllability and uniformity of the grouting process.
It achieves uniform distribution of grout in all areas of the cast-in-place pile, improves grouting effect, ensures stability and reliability of the grouting process, optimizes the adjustment of grouting pressure and flow rate, and improves the overall grouting effect.
Smart Images
Figure CN224092507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of cast-in-place pile, concretely relates to the grouting pipe connection structure based on anti -pulling anti -pressure cast -in -place pile layered annular post -grouting. BACKGROUND
[0002] Cast-in-place pile is a kind of foundation structure widely used in construction engineering, and its construction technology has experienced the evolution process from simple to complex, from manual operation to mechanized construction.
[0003] With the development of building technology, cast-in-place pile construction gradually introduces steel reinforcement cage, concrete mixing and mechanical hole forming technology, and the traditional single bottom grouting technology gradually shows that it cannot meet the needs of the development of current building technology.
[0004] In the prior art, the grouting pipe is usually a single or multiple straight-line type grouting pipe arranged inside or outside the steel reinforcement cage, the number of grouting holes of the grouting pipe is limited, and the distribution is uneven, which leads to uneven grouting of the grouting pipe, too much or too little grouting in local areas, and affects the overall grouting effect of the cast-in-place pile.
[0005] In addition, the grouting pressure of the existing grouting pipe is difficult to be uniformly distributed, and local pressure may be too high or too low, which not only affects the grouting effect, but also may cause damage to the grouting pipe. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing the grouting pipe connection structure based on anti -pulling anti -pressure cast -in -place pile layered annular post -grouting, aims at solving the problem of limited grouting effect of grouting pipe in prior art.
[0007] The utility model is realized in this way, the grouting pipe connection structure based on anti -pulling anti -pressure cast -in -place pile layered annular post -grouting, including the multiple annular grouting pipes arranged at the outer periphery of steel reinforcement cage and with steel reinforcement cage synchronous down into the grouting hole, the annular grouting pipe has multiple circumferential grouting holes arranged away from steel reinforcement cage;
[0008] Each annular grouting pipe is connected with longitudinal grouting pipe, and the longitudinal grouting pipe is located in cage space;The bottom of the longitudinal grouting pipe has a bottom end, and the bottom end is communicated with the annular grouting pipe, and the top of the longitudinal grouting pipe has a top end extending to the outside of the grouting hole and connected with grouting equipment.
[0009] Further, the annular grouting pipe is horizontally arranged, and the longitudinal grouting pipe is longitudinally arranged and arranged along the axial extension of the steel reinforcement cage.
[0010] Further, the bottom end is connected with a tee head, the tee head has a middle head and two end heads arranged on both sides of the middle head; the middle head is arranged in the steel reinforcement cage and extends into the cage space and is connected with the longitudinal grouting pipe; the two end heads are located on the outer periphery of the steel reinforcement cage and are respectively connected with the end of the annular grouting pipe.
[0011] Further, the middle head is arranged in the steel reinforcement cage by binding.
[0012] Further, a plurality of positioning rings are arranged on the outer periphery of the annular grouting pipe, the positioning rings are arranged along the circumferential direction of the annular grouting pipe, and a steel wire is wound on the positioning rings and fixedly connected to the steel reinforcement cage.
[0013] Further, the positioning ring is provided with an annular groove, the annular groove is arranged along the circumferential direction of the positioning ring, the steel wire is embedded in the annular groove and fixedly wound along the annular groove.
[0014] Further, the longitudinal grouting pipe is fixedly abutted against the inner side of the steel reinforcement cage.
[0015] Further, a plurality of fixing rings are arranged on the longitudinal grouting pipe, the fixing rings are arranged along the axial direction of the longitudinal grouting pipe, and a hook is arranged on the fixing ring and downwardly bent, the hook is hung on the steel reinforcement cage from top to bottom, so that the longitudinal grouting pipe is fixedly abutted against the inner side of the steel reinforcement cage.
[0016] Further, the top of the fixing ring is provided with a top ring edge, the top ring edge is arranged on the outer periphery of the longitudinal grouting pipe, a top elastic ring is connected to the top ring edge, the top elastic ring is elastically arranged on the outer periphery of the longitudinal grouting pipe and is in elastic tension deformation.
[0017] Further, the bottom of the fixing ring is provided with a bottom ring edge, the bottom ring edge is arranged on the outer periphery of the longitudinal grouting pipe, a bottom elastic ring is connected to the bottom ring edge, the bottom elastic ring is elastically arranged on the outer periphery of the longitudinal grouting pipe and is in elastic tension deformation.
[0018] Compared with the prior art ， The grouting pipe connecting structure based on the layered annular post-grouting of the uplift and pressure resisting cast-in-place pile can realize layered annular grouting, so that the grout can be uniformly distributed in each region of the cast-in-place pile, the grouting of the grouting pipe is more uniform, and the overall grouting effect is improved.
[0019] Furthermore, by using a longitudinal grouting pipe located within the cage space enclosed by the reinforcing cage, with its bottom end connected to the annular grouting pipe and its top end extending to the outside of the grouting hole and connected to the grouting equipment, the grouting process becomes more stable and controllable. This allows for better adjustment of grouting pressure and flow rate, further optimizing the grouting effect and making the grouting effect more reliable. Attached Figure Description
[0020] Figure 1 This is a front view schematic diagram of the grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles provided by this utility model;
[0021] Figure 2 This is a three-dimensional structural diagram of the annular grouting pipe provided by this utility model;
[0022] Figure 3 This is a cross-sectional schematic diagram of the positioning ring provided by this utility model;
[0023] Figure 4 This is a cross-sectional view of the hook provided by this utility model;
[0024] Figure 5 This is a cross-sectional schematic diagram of the fixing ring provided by this utility model;
[0025] In the figure: 100 steel cage, 101 cage space, 102 annular grouting pipe, 103 circumferential grouting hole, 104 middle head, 105 end head, 106 positioning ring, 107 steel wire, 108 annular groove.
[0026] Longitudinal grouting pipe 200, bottom end 201, top end 202, fixing ring 203, hook 204, top ring edge 205, top elastic ring 206, bottom ring edge 207, bottom elastic ring 208. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0028] The implementation of this utility model will be described in detail below with reference to specific embodiments.
[0029] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0030] Reference Figures 1-5 The image shown is a preferred embodiment of the present invention.
[0031] The grouting pipe connection structure based on the layered annular post-grouting of the pull-out and compression-resistant cast-in-place pile includes multiple annular grouting pipes 102 arranged around the outer periphery of the reinforcing cage 100 and simultaneously lowered into the grouting hole along with the reinforcing cage 100. The annular grouting pipes 102 have multiple circumferential grouting holes 103 arranged away from the reinforcing cage 100. The multiple annular grouting pipes 102 are arranged at intervals along the axial direction of the reinforcing cage 100, and the reinforcing cage 100 encloses to form a cage space 101.
[0032] Each annular grouting pipe 102 is connected to a longitudinal grouting pipe 200, which is located in the cage space 101. The bottom of the longitudinal grouting pipe 200 has a bottom end 201, which is connected to the annular grouting pipe 102. The top of the longitudinal grouting pipe 200 has a top end 202 that extends to the outside of the grouting hole and is connected to the grouting equipment.
[0033] The grouting pipe connection structure based on layered annular post-grouting of pull-out and compression-resistant cast-in-place piles provided above achieves layered annular grouting by arranging multiple annular grouting pipes 102 around the outer periphery of the reinforcing cage 100 and spacing them along the axial direction of the reinforcing cage 100. With multiple circumferential grouting holes 103 on the annular grouting pipes 102 facing away from the reinforcing cage 100, layered annular grouting can be achieved. This ensures that the grout is evenly distributed in all areas of the cast-in-place pile, effectively achieving more uniform grouting through the grouting pipes, thereby improving the overall grouting effect.
[0034] In addition, the longitudinal grouting pipe 200 is located within the cage space 101 enclosed by the steel cage 100. Its bottom end 201 is connected to the annular grouting pipe 102, and its top end 202 extends to the outside of the grouting hole and is connected to the grouting equipment. This makes the grouting process more stable and controllable, and allows for better adjustment of grouting pressure and flow rate, further optimizing the grouting effect and making the grouting effect more reliable.
[0035] In this embodiment, the annular grouting pipe 102 is arranged horizontally, and the longitudinal grouting pipe 200 is arranged longitudinally, extending along the axial direction of the reinforcing cage 100.
[0036] This allows the grouting pipe to better adapt to the structural characteristics of the cast-in-place pile, ensuring that the grout can be evenly distributed along the axial direction of the reinforcing cage 100, thereby improving the grouting effect and enhancing the overall performance of the cast-in-place pile.
[0037] In this embodiment, a tee head is connected to the bottom end 201. The tee head has a middle head 104 and two end heads 105 arranged on both sides of the middle head 104. The middle head 104 passes through the reinforcing cage 100, extends into the cage space 101, and is connected to the longitudinal grouting pipe 200. The two end heads 105 are located on the outer periphery of the reinforcing cage 100 and are respectively connected to the ends of the annular grouting pipe 102.
[0038] By arranging the three-way connector, the longitudinal grouting pipe 200 and the annular grouting pipe 102 are effectively connected, allowing the grout to flow smoothly from the longitudinal grouting pipe 200 into the annular grouting pipe 102, and then be evenly injected into the grouting hole through the circumferential grouting hole 103 of the annular grouting pipe 102, further improving the uniformity of grouting and enhancing the grouting effect of the grouting pipe.
[0039] In this embodiment, the middle head 104 is fixedly inserted into the steel cage 100 by binding.
[0040] By using binding, a simple and secure method, the stability of the middle section 104 can be ensured during construction, thereby guaranteeing the reliability of the grouting pipe connection and ensuring the smooth progress of the grouting process.
[0041] In this embodiment, a plurality of positioning rings 106 are fixedly sleeved on the outer periphery of the annular grouting pipe 102. The plurality of positioning rings 106 are arranged around the annular grouting pipe 102 at intervals in the circumference. Steel wires 107 are wound on the positioning rings 106 and the steel wires 107 are fixedly connected to the reinforcing cage 100.
[0042] By setting the positioning ring 106 and the steel wire 107, the annular grouting pipe 102 can be firmly fixed on the reinforcing cage 100, preventing the annular grouting pipe 102 from shifting or shaking during construction, ensuring the accurate position of the grouting hole, and thus improving the accuracy and stability of grouting.
[0043] In this embodiment, the positioning ring 106 is provided with an annular groove 108, which extends around the positioning ring 106 in a circumferential arrangement. The steel wire 107 is embedded in the annular groove 108 and is wound and fixed along the annular groove 108.
[0044] In this way, the annular groove 108 provides a fixed winding position for the steel wire 107, allowing the steel wire 107 to be more tightly fixed on the positioning ring 106, thereby enhancing the connection stability between the annular grouting pipe 102 and the reinforcing cage 100 and improving the construction reliability of the grouting pipe.
[0045] In this embodiment, the longitudinal grouting pipe 200 is fixedly abutted against the inner side of the reinforcing cage 100.
[0046] This ensures that the longitudinal grouting pipe 200 remains stable within the reinforcing cage 100, preventing it from shifting or shaking during the grouting process. This ensures that the grout can be smoothly delivered through the longitudinal grouting pipe 200 to the annular grouting pipe 102, improving the continuity and stability of the grouting process.
[0047] In this embodiment, a plurality of fixing rings 203 are fitted on the longitudinal grouting pipe 200, and the plurality of fixing rings 203 are arranged at intervals along the axial direction of the longitudinal grouting pipe 200; the fixing rings 203 are provided with hooks 204 arranged downwardly, and the hooks 204 are hung on the reinforcing cage 100 from top to bottom, so that the longitudinal grouting pipe 200 is fixedly abutted against the inner side of the reinforcing cage 100.
[0048] By setting the fixing ring 203 and hook 204, additional fixed support is provided for the longitudinal grouting pipe 200, which can be more firmly abutted against the inner side of the steel cage 100, further enhancing the stability of the longitudinal grouting pipe 200 and ensuring the smooth progress of the grouting process.
[0049] In this embodiment, the top of the fixing ring 203 has a top ring edge 205, which surrounds the outer periphery of the longitudinal grouting pipe 200. A top elastic ring 206 is connected to the top ring edge 205. The top elastic ring 206 is elastically sleeved on the outer periphery of the longitudinal grouting pipe 200 and is in elastic tension deformation.
[0050] The top elastic ring 206 provides a certain elastic support for the longitudinal grouting pipe 200, enabling it to remain stable when subjected to external forces. At the same time, the elastic tension deformation characteristics can also adapt to the slight deformation of the longitudinal grouting pipe 200 during the grouting process, thereby improving the stability and reliability of the longitudinal grouting pipe 200.
[0051] In this embodiment, the bottom of the fixing ring 203 has a bottom ring edge 207, which surrounds the outer periphery of the longitudinal grouting pipe 200. A bottom elastic ring 208 is connected to the bottom ring edge 207, which is elastically sleeved on the outer periphery of the longitudinal grouting pipe 200 and is under elastic tension deformation.
[0052] In this way, the bottom elastic ring 208 also provides elastic support for the longitudinal grouting pipe 200. Together with the top elastic ring 206, it can better adapt to the stress situation of the longitudinal grouting pipe 200 during the grouting process, ensuring its stability during construction, thereby improving the stability and reliability of grouting.
[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A grouting pipe connection structure based on layered annular post-grouting of tensile and compressive cast-in-place piles, characterized in that, It includes multiple annular grouting pipes arranged around the outer periphery of the reinforcing cage and simultaneously lowered into the grouting holes along with the reinforcing cage. Each annular grouting pipe has multiple circumferential grouting holes arranged away from the reinforcing cage. The multiple annular grouting pipes are arranged at intervals along the axial direction of the reinforcing cage, and the reinforcing cage encloses the cage space. Each of the annular grouting pipes is connected to a longitudinal grouting pipe, which is located in the cage space; the bottom of the longitudinal grouting pipe has a bottom end, which communicates with the annular grouting pipe, and the top of the longitudinal grouting pipe has a top end that extends to the outside of the grouting hole and is connected to the grouting equipment.
2. The grouting pipe connection structure based on layered annular post-grouting of pull-out and compression-resistant cast-in-place piles as described in claim 1, characterized in that, The annular grouting pipe is arranged horizontally, and the longitudinal grouting pipe is arranged longitudinally, extending along the axial direction of the reinforcing cage.
3. The grouting pipe connection structure based on layered annular post-grouting of pull-out and compression-resistant cast-in-place piles as described in claim 1, characterized in that, The bottom end is connected to a tee head, which has a middle head and two end heads arranged on both sides of the middle head; the middle head passes through the reinforcing cage, extends into the cage space, and is connected to the longitudinal grouting pipe; the two end heads are located on the outer periphery of the reinforcing cage and are respectively connected to the ends of the annular grouting pipe.
4. The grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles as described in claim 3, characterized in that, The middle section is fixed and threaded through the steel cage by binding.
5. The grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles as described in any one of claims 1-3, characterized in that, Multiple positioning rings are fixedly fitted around the outer periphery of the annular grouting pipe. The multiple positioning rings are arranged at intervals around the circumference of the annular grouting pipe. Steel wires are wound around the positioning rings and the steel wires are fixedly connected to the reinforcing cage.
6. The grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles as described in claim 5, characterized in that, The positioning ring is provided with an annular groove, which extends around the circumference of the positioning ring. The steel wire is embedded in the annular groove and is wound and fixed along the annular groove.
7. The grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles as described in any one of claims 1-3, characterized in that, The longitudinal grouting pipe is fixedly attached to the inner side of the reinforcing cage.
8. The grouting pipe connection structure based on layered annular post-grouting of anti-pull-out and anti-compression cast-in-place piles as described in any one of claims 1-3, characterized in that, Multiple fixing rings are fitted onto the longitudinal grouting pipe, and the multiple fixing rings are arranged at intervals along the axial direction of the longitudinal grouting pipe; the fixing rings are provided with hooks that are bent downwards, and the hooks are hung on the reinforcing cage from top to bottom, so that the longitudinal grouting pipe is fixedly abutted against the inner side of the reinforcing cage.
9. The grouting pipe connection structure based on layered annular post-grouting of pull-out and compression-resistant cast-in-place piles as described in claim 8, characterized in that, The top of the fixing ring has a top ring edge, which surrounds the outer periphery of the longitudinal grouting pipe. A top elastic ring is connected to the top ring edge, which is elastically fitted around the outer periphery of the longitudinal grouting pipe and is under elastic tension deformation.
10. The grouting pipe connection structure based on layered annular post-grouting of pull-out and compression-resistant cast-in-place piles as described in claim 9, characterized in that, The bottom of the fixing ring has a bottom ring edge, which surrounds the outer periphery of the longitudinal grouting pipe. A bottom elastic ring is connected to the bottom ring edge, which is elastically fitted around the outer periphery of the longitudinal grouting pipe and is under elastic tension deformation.