Full-recovery type pile-anchor support construction structure

Abstract

The utility model discloses a full recovery type pile anchor support construction structure which comprises an inclined pile and a recoverable anchor rod, the inclined pile comprises a plurality of steel pipe PC inclined piles which are arranged at intervals, rabbets are formed in the two sides of the steel pipe PC inclined piles, the top of the recoverable anchor rod is connected with the steel pipe PC inclined piles, and the bottom of the recoverable anchor rod is arranged far away from the steel pipe PC inclined piles. The recyclable anchor rod comprises a prefabricated anchoring pier, a metal corrugated pipe, a round steel anchor rod body, a grouting body, a gasket and a locking nut, the metal corrugated pipe is fixedly connected with the prefabricated anchoring pier, and the round steel anchor rod body is installed in the metal corrugated pipe. One end of the round steel anchor rod is in threaded connection with the prefabricated anchoring pier, the other end of the round steel anchor rod extends out of the metal corrugated pipe and is fixed to the steel pipe PC inclined pile through the gasket and the locking nut, and the prefabricated anchoring pier and the metal corrugated pipe are wrapped with the grouting body. The utility model has the advantages that the steel pipe PC inclined pile is combined with the recoverable anchor rod, so that the support material is fully recovered and can be reused, the cost and environmental influence are reduced, and the device is environment-friendly, economical, safe and efficient.

Description

Technical Field

[0001] This utility model relates to the technical field of building foundation pit support, and in particular to a fully recyclable pile-anchor support construction structure. Background Technology

[0002] Excavation pit retaining structure is an organic whole in which soil and support structure interact with each other. Due to constraints from surrounding buildings and underground pipelines, higher requirements are placed on the safety of the support structure. It must not only ensure the stability of the excavation pit and the safety and convenience of operations inside the pit, but also control the displacement of the soil at the bottom and outside the pit within a certain range to ensure the normal use of adjacent buildings and municipal facilities.

[0003] The disadvantages of traditional foundation pit support methods are:

[0004] (1) The support piles are vertical piles, which have poor resistance to lateral earth pressure;

[0005] (2) Most retaining piles cannot be recycled and reused, and their water-stopping effect is poor. They need to be specially installed with water-stopping curtains, which is costly.

[0006] (3) Deeper foundation pits require one or more internal supports, which takes a long time and costs a lot.

[0007] (4) The construction is complicated and the efficiency is low.

[0008] Therefore, a fully recoverable pile-anchor support construction structure that can solve the above problems is needed. Summary of the Invention

[0009] The purpose of this utility model is to provide a fully recyclable pile-anchor support construction structure to address the shortcomings of the existing technology. This fully recyclable pile-anchor support construction structure consists of inclined piles and recyclable anchor rods. The combination of inclined piles and recyclable anchor rods ensures the support effect while also achieving full recycling of support materials, allowing for reuse, reducing costs and environmental impact, and making it environmentally friendly, economical, safe, and efficient.

[0010] The objective of this utility model is achieved through the following technical solution:

[0011] A fully recyclable pile-anchor support construction structure includes inclined piles and recyclable anchor rods. The bottom of the inclined piles is set close to the bottom of the building, and the top is set away from the building. The inclined piles include several steel pipe PC inclined piles arranged at intervals. Both sides of the steel pipe PC inclined piles are provided with tongue and groove joints that cooperate with each other. The recyclable anchor rods are inclined, with the top connected to the steel pipe PC inclined piles and the bottom set away from the steel pipe PC inclined piles. The recyclable anchor rods include a prefabricated anchor block, a corrugated metal pipe, a round steel anchor rod, grout, a gasket, and a locking nut. The corrugated metal pipe is fixedly connected to the prefabricated anchor block. The round steel anchor rod is installed inside the corrugated metal pipe. One end of the round steel anchor rod is threaded to the prefabricated anchor block, and the other end extends to the outside of the corrugated metal pipe and is fixed to the steel pipe PC inclined pile through the gasket and the locking nut. The grout is wrapped around the prefabricated anchor block and the corrugated metal pipe.

[0012] The top and middle sections of the inclined pile are respectively equipped with ring beams and waist beams.

[0013] The recyclable anchor rod is divided into a top recyclable anchor rod and a middle recyclable anchor rod. The top recyclable anchor rod is connected to the top of the steel pipe PC inclined pile through the ring beam, and the middle recyclable anchor rod is connected to the middle of the steel pipe PC inclined pile through the waist beam.

[0014] The round steel anchor bolt is composed of several round steel anchor bolt assemblies, which are connected by a joint structure, which consists of mating internal threaded joints and external threaded joints.

[0015] The steel pipe PC inclined piles are divided into alternating long steel pipe PC inclined piles and short steel pipe PC inclined piles, and the tongue and groove of one steel pipe PC inclined pile is connected to the tongue and groove of the adjacent steel pipe PC inclined pile.

[0016] Adjacent PC steel pipe inclined piles are connected by Larssen steel sheet inclined piles. Each Larssen steel sheet inclined pile is composed of several Larssen steel sheet inclined pile assemblies. Both sides of each Larssen steel sheet inclined pile assembly are provided with tongue and groove joints, and the tongue and groove joints on both sides of the Larssen steel sheet inclined pile assembly cooperate with each other. The tongue and groove joint of one Larssen steel sheet inclined pile assembly is connected to the tongue and groove joint of another adjacent Larssen steel sheet inclined pile assembly. The tongue and groove joint of the PC steel pipe inclined pile is connected to the tongue and groove joint of the Larssen steel sheet inclined pile assembly.

[0017] The angle between the inclined pile and the vertical plane is 10° to 30°.

[0018] The advantages of this utility model are:

[0019] (1) The inclined arrangement of steel pipe PC inclined piles effectively resists lateral earth pressure;

[0020] (2) The steel pipe PC inclined piles are connected by tongue and groove, which ensures a tight connection between the piles and improves the overall stability of the foundation pit. At the same time, the water-stopping effect is good, and there is no need to set up a water-stopping curtain for water-stopping.

[0021] (3) The tongue and groove connection method of steel pipe PC inclined piles simplifies the construction process and improves construction efficiency;

[0022] (4) The combination of long steel pipe PC inclined piles and short steel pipe PC inclined piles can effectively avoid engineering piles and reduce construction difficulty;

[0023] (5) The steel pipe PC inclined pile and Larssen steel sheet inclined pile are effectively combined to give full play to the bending and shear resistance of the steel pipe PC inclined pile and reduce the project cost;

[0024] (6) The combination of steel pipe PC inclined piles and recyclable anchor rods enables the full recycling of support materials, which can be reused, reducing costs and environmental impact, and is environmentally friendly, economical, safe and efficient.

[0025] (7) The combination of steel pipe PC inclined piles and recyclable anchor rods is suitable for various geological conditions and has good overall stability. Attached Figure Description

[0026] Figure 1 This is a layout diagram of the fully recyclable pile-anchor support construction structure of this utility model;

[0027] Figure 2 This is a plan view of the combination of the steel pipe PC inclined pile and the Larssen steel sheet inclined pile of this utility model;

[0028] Figure 3 This is an elevation view of the combination of the steel pipe PC inclined pile and the Larssen steel sheet inclined pile of this utility model;

[0029] Figure 4 This is a plan view of the combination of long steel pipe PC inclined pile and short steel pipe PC inclined pile of this utility model;

[0030] Figure 5 This is an elevation view of the combination of long steel pipe PC inclined pile and short steel pipe PC inclined pile of this utility model;

[0031] Figure 6 This is a schematic diagram of the recyclable anchor bolt of this utility model;

[0032] like Figure 1-6 As shown in the figure, each label represents:

[0033] Inclined pile 1; Steel pipe PC inclined pile 11; Larssen steel sheet inclined pile 12; Long steel pipe PC inclined pile 111; Short steel pipe PC inclined pile 112; Tongue and groove joint 113;

[0034] 2. Recyclable anchor bolt; 21. Precast anchor block; 22. Corrugated metal pipe; 23. Round steel anchor bolt; 24. Joint structure; 25. Grouting body; 26. Gasket; 27. Locking nut;

[0035] 3. Ring beam; 4. Waist beam; 5. Building; 6. Engineering pile. Detailed Implementation

[0036] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0037] Example 1: As Figure 1-3 as well as Figure 6 As shown, this embodiment specifically relates to a fully recoverable pile-anchor support construction structure. This structure mainly includes inclined piles 1, recoverable anchor rods 2, ring beams 3, and waist beams 4. The bottom of the inclined piles 1 is set near the bottom of the building 5, and the top is set away from the building 5. The angle between the inclined piles 1 and the vertical plane is 10° to 30°, with the specific angle determined based on geological conditions, ground load, construction conditions, and the surrounding environment. The inclined piles 1 include several spaced steel pipe PC (prestressed concrete) inclined piles 11. Each steel pipe PC inclined pile 11 consists of a steel pipe and prestressed concrete piles inside the steel pipe. Both sides of the steel pipe PC inclined pile 11 have tongue-and-groove joints 113 that fit together. In this embodiment, all steel pipe PC inclined piles 11 are the same size and length. Adjacent steel pipe PC inclined piles 11 are connected by Larssen steel plate inclined piles 12. The sheet pile 12 is composed of two Larssen steel sheet pile assemblies with opposite opening directions. Both sides of the Larssen steel sheet pile assembly are provided with tongue and groove joints 113, and the tongue and groove joints 113 on both sides of the Larssen steel sheet pile assembly cooperate with each other. The tongue and groove joint 113 of one Larssen steel sheet pile assembly is connected with the tongue and groove joint 113 of the adjacent Larssen steel sheet pile assembly. The tongue and groove joint 113 of the steel pipe PC pile 11 is connected with the tongue and groove joint 113 of the Larssen steel sheet pile assembly.

[0038] like Figure 1 as well as Figure 6As shown, the recyclable anchor 2 is inclined, with its top connected to the steel pipe PC inclined pile 11 and its bottom located away from the steel pipe PC inclined pile 11. The recyclable anchor 2 includes a prefabricated anchor block 21, a metal corrugated pipe 22, a round steel anchor 23, a grouting body 24, a gasket 26, and a locking nut 27. The prefabricated anchor block 21 has a platform-like structure. The metal corrugated pipe 22 is fixedly connected to the prefabricated anchor block 21. The round steel anchor 23 is installed inside the metal corrugated pipe 22. The inner diameter of the metal corrugated pipe 22 is slightly larger than the outer diameter of the round steel anchor 23. One end of the round steel anchor 23 is threadedly connected to the prefabricated anchor block 21, and the other end extends to the outside of the metal corrugated pipe 22 and is fixed to the steel pipe PC inclined pile 11 through the gasket 26 and the locking nut 27. The prefabricated anchor block 21 is provided with an internal threaded joint. The grouting body 24 is wrapped around the prefabricated anchor block 21 and the metal corrugated pipe 22. The round steel anchor 23 is composed of several round steel anchor components, which are connected by a joint structure 24 to extend the round steel anchor 23. The joint structure 24 consists of mating internal threaded joints and external threaded joints. In other words, the two ends of the round steel anchor component are respectively provided with internal threaded joints and external threaded joints. The top and middle parts of the inclined pile 1 are respectively provided with a ring beam 3 and a waist beam 4. The recyclable anchor 2 is divided into a top recyclable anchor and a middle recyclable anchor. The top recyclable anchor is connected to the top of the steel pipe PC inclined pile 11 through the ring beam 3. That is, the round steel anchor 23 of the top recyclable anchor passes through the ring beam 3 and is fixed to the ring beam 3 by a washer 26 and a locking nut 27. The middle recyclable anchor is connected to the middle part of the steel pipe PC inclined pile 11 through the waist beam 4. That is, the round steel anchor 23 of the middle recyclable anchor passes through the steel pipe PC inclined pile 11 and the waist beam 4 and is fixed to the waist beam 4 by a washer 26 and a locking nut 27.

[0039] like Figure 1-3 as well as Figure 6 As shown, this embodiment also includes the following construction methods:

[0040] 1. Based on the design drawings, use surveying instruments to lay out the pile positions, determine the position and angle of each inclined pile 1, and mark the pile position and inclination angle on the ground to ensure construction accuracy.

[0041] 2. Move the pile driver to the predetermined position, adjust the angle of the pile driver to match the design angle of the inclined pile 1, use the pile hoisting equipment to hoist the steel pipe PC inclined pile 11 onto the pile driver, drive the steel pipe PC inclined pile 11 into the ground, control the pile driving speed and force, and ensure that the inclination and depth of the pile meet the design requirements.

[0042] 3. The Larssen steel sheet inclined piles 12 are driven into the ground by a pile driver. During this process, the tongue and groove joints 113 between the Larssen steel sheet inclined piles 12 and the steel pipe PC inclined piles 11, as well as between the Larssen steel sheet inclined piles 12 and the Larssen steel sheet inclined piles 12, are engaged.

[0043] 4. Based on the design drawings, determine the positions of ring beam 3 and recyclable anchor rod 2, and excavate the earthwork to the bottom surface of ring beam 3.

[0044] 5. Install the bottom formwork of the ring beam, tie the reinforcing bars to ensure that the spacing and quantity of the reinforcing bars meet the design requirements, install the side formwork of the ring beam, pour concrete, and properly cure it to ensure that the concrete strength meets the design requirements.

[0045] 6. Using an anchor drilling rig, drill holes at the designed locations and assemble the prefabricated anchor block 21, corrugated metal pipe 22, and round steel anchor 23 of the recyclable anchor 2 (top recyclable anchor 2). Place the recyclable anchor 2 into the hole and temporarily fix it to prevent displacement. Inject grout into the hole through the grouting pipe, ensuring the voids are filled, and control the grouting pressure to prevent it from being too high or too low. After the grout has cured to the designed strength, use a jack to tension the recyclable anchor 2 to the designed load, and lock the recyclable anchor 2 with the locking nut 27 to maintain the tension.

[0046] 7. Construct the wainscoting 4 and the recyclable anchor rod in the middle according to steps 4-6.

[0047] 8. Use appropriate testing methods to test the integrity, bearing capacity and tilt angle of inclined pile 1 to ensure that it meets the design requirements; conduct a pull-out test on the recyclable anchor rod 2 to test its bearing capacity and anchoring effect.

[0048] 9. Construct the underground structure according to the design drawings.

[0049] 10. After the underground structure support measures are completed, unlock the recyclable anchor rods 2 at the corresponding locations, and use a recycling device to remove the round steel anchor rods 23 from the boreholes. Specifically, unscrew the locking nut 27 and remove the washer 26, then unscrew the round steel anchor rod 23 to separate it from the precast anchor pier 21. Clean and maintain the recycled round steel anchor rods 23 to ensure they can be reused. As the underground structure is continuously constructed, the round steel anchor rods 23 are recycled layer by layer. After the project is completed, pull out the steel pipes of the steel pipe PC inclined piles 11, clean and maintain the recycled steel pipes, and store them properly to ensure their subsequent normal use.

[0050] The beneficial technical effects of this embodiment are as follows:

[0051] (1) The inclined arrangement of steel pipe PC inclined piles effectively resists lateral earth pressure;

[0052] (2) The steel pipe PC inclined piles are connected by tongue and groove, which ensures a tight connection between the piles and improves the overall stability of the foundation pit. At the same time, the water-stopping effect is good, and there is no need to set up a water-stopping curtain for water-stopping.

[0053] (3) The tongue and groove connection method of steel pipe PC inclined piles simplifies the construction process and improves construction efficiency;

[0054] (4) The steel pipe PC inclined pile and Larssen steel sheet inclined pile are effectively combined to give full play to the bending and shear resistance of the steel pipe PC inclined pile and reduce the project cost;

[0055] (5) The combination of steel pipe PC inclined piles and recyclable anchor rods enables the full recycling of support materials, which can be reused, reducing costs and environmental impact, and is environmentally friendly, economical, safe and efficient.

[0056] (6) The combination of steel pipe PC inclined piles and recyclable anchor rods is suitable for various geological conditions and has good overall stability.

[0057] Example 2: As Figure 1 as well as Figure 4-6 As shown, this embodiment relates to a fully recoverable pile-anchor support construction structure. Except for the connection method between the steel pipe PC inclined piles 11, which differs from the connection method between the steel pipe PC inclined piles 11 in Embodiment 1, the other structures are the same and will not be described again here. In this embodiment, the steel pipe PC inclined piles 11 are divided into alternating long steel pipe PC inclined piles and short steel pipe PC inclined piles. The long and short steel pipe PC inclined piles are the same size but different in length. The tongue and groove joint 113 of one steel pipe PC inclined pile 11 is connected to the tongue and groove joint 113 of the adjacent steel pipe PC inclined pile 11.

[0058] like Figure 1 as well as Figure 4-6 As shown, this embodiment also includes the following construction methods:

[0059] 1. Based on the design drawings, use surveying instruments to lay out the pile positions, determine the position and angle of each inclined pile 1, and mark the pile position and inclination angle on the ground to ensure construction accuracy.

[0060] 2. Move the pile driver to the predetermined position, adjust the angle of the pile driver to match the design angle of the inclined pile 1, use the pile hoisting equipment to hoist the long steel pipe PC inclined pile 111 onto the pile driver, drive the long steel pipe PC inclined pile 111 into the ground, control the pile driving speed and force, and ensure that the inclination and depth of the pile meet the design requirements.

[0061] 3. The short steel pipe PC inclined pile 112 is driven into the ground by a pile driver. During this process, the tongue and groove joint 113 between the short steel pipe PC inclined pile 112 and the long steel pipe PC inclined pile 111 is engaged.

[0062] 4. Based on the design drawings, determine the positions of ring beam 3 and recyclable anchor rod 2, and excavate the earthwork to the bottom surface of ring beam 3.

[0063] 5. Install the bottom formwork of the ring beam, tie the reinforcing bars to ensure that the spacing and quantity of the reinforcing bars meet the design requirements, install the side formwork of the ring beam, pour concrete, and properly cure it to ensure that the concrete strength meets the design requirements.

[0064] 6. Using an anchor drilling rig, drill holes at the designed locations and assemble the prefabricated anchor block 21, corrugated metal pipe 22, and round steel anchor 23 of the recyclable anchor 2 (top recyclable anchor 2). Place the recyclable anchor 2 into the hole and temporarily fix it to prevent displacement. Inject grout into the hole through the grouting pipe, ensuring the voids are filled, and control the grouting pressure to prevent it from being too high or too low. After the grout has cured to the designed strength, use a jack to tension the recyclable anchor 2 to the designed load, and lock the recyclable anchor 2 with the locking nut 27 to maintain the tension.

[0065] 7. Construct the wainscoting 4 and the recyclable anchor rod in the middle according to steps 4-6.

[0066] 8. Use appropriate testing methods to test the integrity, bearing capacity and tilt angle of inclined pile 1 to ensure that it meets the design requirements; conduct a pull-out test on the recyclable anchor rod 2 to test its bearing capacity and anchoring effect.

[0067] 9. Construct the underground structure according to the design drawings.

[0068] 10. After the underground structure support measures are completed, unlock the recyclable anchor rods 2 at the corresponding locations, and use a recycling device to remove the round steel anchor rods 23 from the boreholes. Specifically, unscrew the locking nut 27 and remove the washer 26, then unscrew the round steel anchor rod 23 to separate it from the precast anchor pier 21. Clean and maintain the recycled round steel anchor rods 23 to ensure they can be reused. As the underground structure is continuously constructed, the round steel anchor rods 23 are recycled layer by layer. After the project is completed, pull out the steel pipes of the steel pipe PC inclined piles 11, clean and maintain the recycled steel pipes, and store them properly to ensure their subsequent normal use.

[0069] The beneficial technical effects of this embodiment are as follows:

[0070] (1) The inclined arrangement of steel pipe PC inclined piles effectively resists lateral earth pressure;

[0071] (2) The steel pipe PC inclined piles are connected by tongue and groove, which ensures a tight connection between the piles and improves the overall stability of the foundation pit. At the same time, the water-stopping effect is good, and there is no need to set up a water-stopping curtain for water-stopping.

[0072] (3) The tongue and groove connection method of steel pipe PC inclined piles simplifies the construction process and improves construction efficiency;

[0073] (4) The combination of long steel pipe PC inclined piles and short steel pipe PC inclined piles can effectively avoid engineering piles and reduce construction difficulty;

[0074] (5) The combination of steel pipe PC inclined piles and recyclable anchor rods enables the full recycling of support materials, which can be reused, reducing costs and environmental impact, and is environmentally friendly, economical, safe and efficient.

[0075] (6) The combination of steel pipe PC inclined piles and recyclable anchor rods is suitable for various geological conditions and has good overall stability.

[0076] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A fully-recycled pile-anchor support construction structure, characterized by: The system includes inclined piles and recyclable anchors. The inclined piles are positioned with their bottoms close to the bottom of the building and their tops away from the building. Each inclined pile consists of several spaced-apart steel pipe PC inclined piles. Both sides of each steel pipe PC inclined pile have tongue and groove joints that fit together. The recyclable anchors are inclined, with their tops connected to the steel pipe PC inclined piles and their bottoms away from them. Each recyclable anchor includes a prefabricated anchor block, a corrugated metal pipe, a round steel anchor, grout, a gasket, and a locking nut. The corrugated metal pipe is fixedly connected to the prefabricated anchor block. The round steel anchor is installed inside the corrugated metal pipe, with one end threaded to the prefabricated anchor block and the other end extending outside the corrugated metal pipe and fixed to the steel pipe PC inclined pile via the gasket and the locking nut. The grout is wrapped around the prefabricated anchor block and the corrugated metal pipe.

2. A fully-recycled pile-anchor support construction structure according to claim 1, characterized in that: The top and middle sections of the inclined pile are respectively equipped with ring beams and waist beams.

3. A fully-recycled pile-anchor support construction structure according to claim 2, characterized in that: The recyclable anchor rod is divided into a top recyclable anchor rod and a middle recyclable anchor rod. The top recyclable anchor rod is connected to the top of the steel pipe PC inclined pile through the ring beam, and the middle recyclable anchor rod is connected to the middle of the steel pipe PC inclined pile through the waist beam.

4. A fully recyclable pile anchor support construction structure as claimed in claim 1, wherein: The round steel anchor bolt is composed of several round steel anchor bolt assemblies, which are connected by a joint structure, which consists of mating internal threaded joints and external threaded joints.

5. A fully recyclable pile anchor retaining structure as claimed in claim 1, wherein: The steel pipe PC inclined piles are divided into alternating long steel pipe PC inclined piles and short steel pipe PC inclined piles, and the tongue and groove of one steel pipe PC inclined pile is connected to the tongue and groove of the adjacent steel pipe PC inclined pile.

6. A fully recyclable pile anchor retaining structure as claimed in claim 1, wherein: Adjacent PC steel pipe inclined piles are connected by Larssen steel sheet inclined piles. Each Larssen steel sheet inclined pile is composed of several Larssen steel sheet inclined pile assemblies. Both sides of each Larssen steel sheet inclined pile assembly are provided with tongue and groove joints, and the tongue and groove joints on both sides of the Larssen steel sheet inclined pile assembly cooperate with each other. The tongue and groove joint of one Larssen steel sheet inclined pile assembly is connected to the tongue and groove joint of another adjacent Larssen steel sheet inclined pile assembly. The tongue and groove joint of the PC steel pipe inclined pile is connected to the tongue and groove joint of the Larssen steel sheet inclined pile assembly.

7. A fully recyclable pile anchor retaining structure as claimed in claim 1, wherein: The angle between the inclined pile and the vertical plane is 10° to 30°.

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