Grouting support pile
By installing detachable grouting pipes and soil-breaking protective plugs on the support piles, the cracking problem caused by insufficient grouting was solved, the grouting process was made smooth and the construction quality was improved, the risk of cracking and settlement was reduced, and the advantages of reusability were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-31
AI Technical Summary
When existing support piles are removed after construction, the grouting is not dense enough, which leads to a high risk of cracking and settlement, affecting the construction quality.
A detachable grouting pipe is installed on the support pile body and fixed by inserting reinforcing bars and clamps. The grouting pipe is driven into the pile along with the support pile and remains in the pile hole after the support pile is removed. The bottom end is sealed by the soil breaking protection plug to ensure that the grouting slurry can reach the bottom of the pile hole smoothly.
To ensure smooth grouting construction, reduce the risk of cracking and settlement, improve construction quality, and reduce costs through reusability.
Smart Images
Figure CN224063461U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to engineering construction equipment technical field especially a grouting support pile. BACKGROUND
[0002] With the continuous development of old urban rainwater and sewage reconstruction projects, underground comprehensive pipe gallery projects and deep foundation pit projects, the share of construction market is getting larger and larger, these projects are all related to the excavation of trench or foundation pit, therefore the support construction safety of trench or foundation pit is particularly important. At present, the construction protection process mainly adopts support pile, the construction process of support pile includes pile sinking, support, removal, pile pulling, grouting and other procedures, the post-construction grouting of support pile plays a crucial role in the quality of subsequent backfilling, if the grouting work is not in place, linear stretching cracking may occur along the pile driving position of support pile, the main reason for cracking is that after the support pile is pulled out, the space originally occupied by the support pile becomes loose, grouting is carried out after the support pile is removed, the grouting slurry cannot smoothly reach the deep layer of pile sinking hole, resulting in that the grouting is not dense, and cracking is prone to occur along these parts subsequently. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a grouting support pile capable of reducing cracking and settlement probability and effectively improving support construction quality.
[0004] To solve the above technical problem, the utility model adopts the following technical scheme: a grouting support pile comprises a support pile body, a grouting pipe which is arranged along the height direction of the support pile body and is detachably connected with the support pile body, the top opening of the grouting pipe is a grouting opening, and a soil breaking protection plug which is detachably arranged at the bottom opening of the grouting pipe and is in sealing cooperation with the bottom opening.
[0005] As an improvement of the above scheme, a plurality of insertion ribs are fixedly arranged on the grouting pipe and are uniformly arranged along the height direction of the grouting pipe, a clamp corresponding to each insertion rib is fixedly arranged on the support pile body, and the insertion rib is in insertion cooperation with the corresponding clamp and is locked and fixed by the clamp.
[0006] As an improvement of the above scheme, the insertion rib is vertically arranged, the insertion rib is fixedly connected with the grouting pipe through a connecting plate fixed at the bottom, and the insertion rib is in insertion cooperation with the clamp from below the clamp.
[0007] As an improvement of the above scheme, at least one limiting pin is further arranged, the top end of the insertion rib is provided with a limiting hole which penetrates the insertion rib in the radial direction, and the limiting pin is inserted into the limiting hole of the insertion rib to form limiting cooperation in the vertical direction with the clamp.
[0008] As an improvement of the above scheme, the bottom end of the soil breaking protection plug is a pointed end.
[0009] As the improvement of the above scheme: the bottom end of the soil breaking protection plug is a conical end, the conical end is in plug-in cooperation with the bottom end opening of the grouting pipe through the connecting end; the small end of the conical end is away from the connecting end, the large end of the conical end is connected with the connecting end, and the diameter of the large end of the conical end is larger than the outer diameter of the grouting pipe.
[0010] As the improvement of the above scheme: the connecting end of the soil breaking protection plug is a flexible rubber end.
[0011] As the improvement of the above scheme: the support pile body is a Larsen steel sheet pile.
[0012] The beneficial effects of the utility model are: the utility model increases the grouting pipe on the support pile body used in the foundation pit excavation support construction, the grouting pipe can be pressed into the pile hole together with the support pile body when the support pile body is sunk, the support pile body is pulled out after the support work is completed, the grouting pipe is left in the pile hole, the soil breaking protection plug at the bottom end of the grouting hole is dropped through the internal pressure of the pile hole, the grouting hole can be grouted, the grouting pipe is pulled out in the grouting process, the grouting slurry can reach the bottom of the pile hole, the internal collapse of the pile hole when the support pile body is pulled out is avoided, the grouting work is ensured, the grouting construction quality is improved, and the probability of subsequent cracking is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the side view of the utility model;
[0014] Figure 2 It is the plan view of the utility model.
[0015] Marked as: 100-support pile body, 110-clamp, 200-grouting pipe, 210-plug-in rib, 220-connection plate, 230-limiting pin, 300-soil breaking protection plug. DETAILED DESCRIPTION
[0016] In order to facilitate understanding of the utility model, the utility model is further described below in combination with the drawings.
[0017] In the description of the utility model, it should be explained that the terms "front", "back", "left", "right", "up", "down", "inner" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the indicated device or component must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0018] The utility model Figure 1 And Figure 2As shown, the grouting support pile disclosed by the utility model comprises a support pile body 100 and a grouting pipe 200, the support pile body 100 is inserted into the construction ground by pile sinking, and the grouting pipe 200 is used for grouting the pile hole formed by pile sinking. Since the support pile body 100 needs to be pulled out of the pile hole when grouting construction is carried out, the hole wall is prone to loosening and collapsing due to the fact that the support of the support pile body 100 is no longer provided, the pile hole is partially blocked, the grouting slurry is blocked and cannot reach the deep layer of the pile hole, the grouting effect is affected, and cracking is prone to occur subsequently; the utility model inserts the grouting pipe 200 and the support pile body 100 into the pile hole and reaches the bottom of the pile hole, the grouting pipe 200 remains in the pile hole after the support pile body 100 is pulled out, and the grouting slurry can be directly and smoothly sent to the bottom layer of the pile hole by the grouting pipe 200 when grouting construction is carried out, so that the grouting is full and the quality of the grouting construction is effectively improved, and cracking is not prone to occur in the later period; in addition, the grouting support pile of the utility model can be reused to reduce construction cost. The support pile body 100 in the utility model can adopt a Larsen steel sheet pile, a cast-in-place pile, a method pile or an underground continuous wall, and the Larsen steel sheet pile with the advantages of fast construction speed and recyclability is used as the preferred scheme of the support pile body 100.
[0019] Specifically, the grouting pipe 200 is arranged in the height direction of the support pile body 100 in the utility model, the grouting pipe 200 is fixed on the support pile body 100, and the grouting pipe 200 and the support pile body 100 are detachably connected, so that the grouting pipe 200 remains in the pile hole when the support pile body 100 is pulled out after pile sinking is completed; the grouting pipe 200 is a hollow pipe structure, the top end and the bottom end of the grouting pipe 200 are provided with openings, the opening at the top end of the grouting pipe 200 is a grouting port, the opening at the bottom end of the grouting pipe 200 is a slurry outlet, and the bottom end of the grouting pipe 200 is preferably flush with the bottom end of the support pile body 100, so as to ensure that the slurry outlet at the bottom end of the grouting pipe 200 can be connected with the bottom layer of the pile hole; before grouting work is carried out, the slurry outlet at the bottom end of the grouting pipe 200 is sealed by the soil breaking protection plug 300, so as to avoid that impurities in the pile hole enter the grouting pipe 200 in the pressing process and affect the subsequent grouting work.
[0020] As shown in the drawings, Figure 1 and Figure 2As shown, the utility model discloses a fixing mode of plug-in cooperation and locking is adopted to realize the fixing of the grouting pipe 200 on the support pile body 100. A plurality of plug-in ribs 210 are fixedly arranged on the grouting pipe 200, and the plug-in ribs 210 are arranged on the grouting pipe 200 along the length direction of the grouting pipe 200 at intervals. A clamp 110 corresponding to the plug-in rib 210 is fixedly arranged on the support pile body 100, and the clamp 100 is arranged on the support pile body 100 along the height direction at intervals. The shape of the plug-in rib 210 is not limited, and both the circular rib and the rectangular rib can be adopted. However, the clamp 110 is used to lock the plug-in rib 210, and in order to improve the stability of locking, the circular rib is preferably adopted. When the grouting pipe 200 is installed, the plug-in rib 210 on the grouting pipe 200 is inserted into the corresponding clamp 110, and then the corresponding plug-in rib 210 is locked by the clamp 100, so that the fixing of the grouting pipe 200 on the support pile body 100 is completed.
[0021] Further, in order to facilitate the removal of the support pile body 100 after the pile sinking is completed, the direction of the plug-in rib 210 and the clamp 100 is limited in the utility model, the plug-in rib 210 is fixed in the grouting pipe 200 in a vertical arrangement, and correspondingly, the axial direction of the clamp 110 on the support pile body 100 is also kept vertical. The plug-in rib 210 can be fixed on the grouting pipe 200 by the connecting plate 220, and the plug-in rib 210 and the connecting plate 220 form an L-shaped structure, so that the plug-in rib 210 is kept in a vertical upward state. When the grouting pipe 200 and the support pile body 100 are assembled, the plug-in rib 210 is inserted into the corresponding clamp 110 from the lower direction of the clamp 110. Through the above structure limitation, during the pile sinking process, the grouting pipe 200 is pressed downward together with the support pile body 100, and the support pile body 100 and the grouting pipe 200 are subjected to upward force together, so that the connection between the plug-in rib 210 and the clamp 110 is stable. During the removal of the support pile body 100, the support pile body 100 is directly pulled upward, and the clamp 110 is moved upward to be separated from the corresponding plug-in rib 210, so that the removal work is convenient and fast.
[0022] Further, as shown in the drawings, Figure 1As shown, in order to further strengthen the stability of the connection between the support pile body 100 and the grouting pipe 200, the utility model also sets up a limiting pin 230, and at the same time, a limiting hole penetrating the radial insertion rib 210 is set up at the top end of the insertion rib 210, after the insertion rib 210 and the clamp 110 are inserted and matched, the limiting pin 230 can be inserted into the limiting hole of the insertion rib 210, the clamp 110 is limited, so as to prevent the relative displacement of the clamp 110 and the insertion rib 210 in the vertical direction after being connected, and the insertion rib 210 is prevented from being separated from the clamp 110. The number of limiting pins 230 can be selected according to actual needs, in order to facilitate the disassembly of the limiting pin 230 when the support pile body 100 is pulled out, the limiting pin 230 can be only installed on the insertion rib 210 at the top end.
[0023] In the utility model, the bottom end opening of the grouting pipe 200 is sealed by the soil breaking protection plug 300, and in addition, the soil breaking effect can be achieved to assist pile sinking, such as Figure 1 As shown, the bottom end of the soil breaking protection plug 300 is provided as a pointed end, including but not limited to a conical pointed end, a square conical pointed end, and in the utility model, the conical end is preferred. The conical end is inserted and matched with the bottom end opening of the grouting pipe 200 through the connecting end, in order to improve the connection effect between the connecting end and the grouting pipe 200, the connecting end of the soil breaking protection plug 300 can adopt a flexible rubber end. In addition, in the utility model, the small end of the conical end is away from the connecting end, the large end of the conical end is connected with the connecting end, and the diameter of the large end of the conical end is greater than the outer diameter of the grouting pipe 200; the force received by the soil breaking protection plug 300 during the pressing process can be weakened, and during the subsequent grouting construction, the soil breaking protection plug 300 can be separated from the grouting pipe 200 by means of the soil pressure in the pile hole when the grouting pipe 200 is pulled out upward, so that the grouting work can be carried out smoothly.
Claims
1. A grouting support pile comprising a support pile body (100), characterized by: The grouting pipe (200) is provided along the height direction of the support pile body (100) and is detachably connected with the support pile body (100), the top end opening of the grouting pipe (200) is a grouting opening, and the bottom end opening of the grouting pipe (200) is detachably provided with a soil breaking protection plug (300) in sealing cooperation with the bottom end opening.
2. The jacked pile according to claim 1, wherein: A plurality of insertion ribs (210) are fixedly arranged on the grouting pipe (200) and are uniformly arranged along the height direction of the grouting pipe (200); a clamping hoop (110) corresponding to the insertion rib (210) is fixedly arranged on the support pile body (100), the insertion rib (210) is inserted into the corresponding clamping hoop (110) and is locked and fixed by the clamping hoop (110).
3. The jacked pile according to claim 2, wherein: The insertion rib (210) is vertically arranged, the insertion rib (210) is fixedly connected with the grouting pipe (200) through the connecting plate (220) fixed at the bottom end, and the insertion rib (210) is inserted into the clamping hoop (110) from the lower side of the clamping hoop (110).
4. The jacked pile according to claim 3, wherein: At least one limiting pin (230) is further included, the top end of the insertion rib (210) is provided with a limiting hole penetrating the insertion rib (210) in the radial direction, and the limiting pin (230) is inserted into the limiting hole of the insertion rib (210) to form a limiting cooperation in the vertical direction with the clamping hoop (110).
5. The jacked pile according to claim 1, wherein: The bottom end of the soil breaking protection plug (300) is a pointed end.
6. The jacked pile according to claim 5, wherein: The bottom end of the soil breaking protection plug (300) is a conical end, the conical end is inserted into the bottom end opening of the grouting pipe (200) through a connecting end, the small end of the conical end is away from the connecting end, the large end of the conical end is connected with the connecting end, and the diameter of the large end of the conical end is greater than the outer diameter of the grouting pipe (200).
7. The jacked pile according to claim 6, wherein: The connecting end of the soil breaking protection plug (300) is a flexible rubber end.
8. The jacked pile according to claim 1, wherein: The support pile body (100) is a Larsen steel sheet pile.