Drilling prestressed concrete composite pile for building construction and using method of drilling prestressed concrete composite pile

Abstract

The invention relates to the technical field of foundation pile construction, in particular to a drilled prestressed concrete composite pile for building construction and a using method thereof.The drilled prestressed concrete composite pile comprises a guide mechanism, the guide mechanism comprises a mounting ring, a plurality of guide pieces and a supporting component, and the outer surface of the mounting ring is provided with external threads; the multiple guide pieces are fixedly connected to the inner surface wall of the mounting ring at equal intervals, and the supporting component is arranged on the mounting ring. During use, under the position supporting limitation of the guide blocks, the reinforcement cage can be quickly inserted into the hole, meanwhile, a certain gap is reserved between the reinforcement cage and the inner wall of the concrete pile pipe, and meanwhile, a gap is reserved between the concrete pile pipe and the interior of the hole under the supporting of the outer strips and the inserting blocks; furthermore, in the process of injecting the grout and the aggregate into the concrete pile pipe, the aggregate can quickly fill the hole through a gap between the reinforcement cage and the inner wall of the concrete pile pipe, so that the reinforcement cage is prevented from hindering filling of the aggregate, and it is ensured that the pile cannot be broken.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pile construction, in particular to a bored prestressed concrete composite pile for building construction and a use method thereof. Background Art

[0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile, or a single pile foundation connected by a column and a pile foundation, is referred to as a pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation. If the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation.

[0003] However, in the prior art, the application of precast piles is limited due to the large vibration and noise during construction, certain damage to the pile body and stress relaxation. The actual bearing capacity of dry-bored concrete cast-in-place piles is not high and is limited by geological conditions and cannot be suitable for a variety of complex geological construction conditions. The bearing capacity of water drill piles is low under the premise of the same amount of concrete due to the construction process, and the construction progress is slow, polluting the environment. The strength of the pile body concrete is limited by bored grouting piles. If there is any inappropriateness in the process of placing the aggregate, the aggregate at the bottom of the pile body is likely to fail to meet the specification requirements, reducing the reliability of the pile. At the same time, the concrete of the pile body is The limitation of concrete strength grade makes the pile bearing capacity not fully utilized. Superfluid concrete bored piles are prone to blockage and broken piles due to the construction workers' own reasons and the construction equipment during operation. This also reduces the reliability of the piles. At the same time, the placement of the steel cage is difficult and the bearing capacity is not high. Static pressure precast piles solve the concrete strength of the pile body and the vibration problems during construction. At the same time, the pile body pressed into the underground part during construction is prone to deflect in the direction of the relatively weak stratum and the quality is uncontrollable, resulting in the above-ground and underground parts cannot achieve the expected axial compression effect, which has buried certain hidden dangers for the building and resulted in poor actual manufacturing and use of existing composite piles. Summary of the invention

[0004] The purpose of the present invention is to provide a bored prestressed concrete composite pile for construction and a method of using the same which can meet different construction conditions, avoid waste of materials and environmental impact, and ensure the overall reliability of the pile body.

[0005] The technical solution adopted by the present invention is as follows: a bored prestressed concrete composite pile for construction, comprising: a guide mechanism, the guide mechanism comprising a mounting ring, a guide piece and a support component, the outer surface of the mounting ring is provided with an external thread, a plurality of guide pieces are provided, the plurality of guide pieces are fixedly connected to the inner surface wall of the mounting ring at equal distances, and the support component is provided on the mounting ring; A limiting mechanism, wherein the limiting mechanism comprises a concrete connecting pipe, a push rod, a push bar and a metal pressing pipe, wherein the concrete connecting pipe is slidably inserted between the outer surfaces of one side of a plurality of guide pieces, wherein two groups of push rods are provided, and each group of push rods is provided with three push rods, and each push rod is slidably inserted inside the mounting ring, and the outer surfaces on both sides of each push rod are respectively fitted with the outer surfaces of the corresponding two guide pieces, wherein two push bars are provided, and each push bar is respectively fixedly connected between the bottom ends of the corresponding three push rods, and the metal pressing pipe is slidably inserted between the outer surfaces of one side of the plurality of guide pieces; and The functional mechanism comprises a concrete pile pipe and a connecting component, wherein the outer surface of the concrete pile pipe is provided with six first connecting ports equidistantly near the bottom edge, the outer surface of the concrete pile pipe is provided with six second connecting ports equidistantly near the top edge, the inner surface wall of the concrete pile pipe is provided with a plurality of limiting ports equidistantly, a guide block is inserted into each limiting port, and the connecting component is arranged on the concrete pile pipe.

[0006] Among them, the supporting component includes a connecting ring, a retaining ring and a retaining plate. The connecting ring is connected to the outer surface of the mounting ring through an external thread. The retaining ring is sleeved on the outer surface of the connecting ring. There are two retaining plates in total. The two retaining plates are fixedly connected to the top of the retaining ring. The outer surface of one side of each retaining plate is fixedly connected to the outer surface of the connecting ring.

[0007] Among them, six top openings are evenly spaced on the outer surface of the concrete connecting pipe near the bottom edge, and the top of the concrete connecting pipe and the bottoms of the two abutments are both in close contact.

[0008] Among them, the outer surfaces of the two resist bars are in contact with the outer surfaces of one side of the corresponding multiple guide plates, and the tops of the two resist bars are in contact with the bottom end of the metal pressing tube.

[0009] Among them, a pressing ring is fixedly connected to the top of the metal pressing tube, and two installation openings are opened on the inner surface wall of the metal pressing tube near the top, and a hanging block is inserted in each of the installation openings.

[0010] Wherein, the inner surface wall of the concrete pile pipe is provided with two communicating grooves, the interior of one communicating groove is communicated with the interiors of the six first connecting ports, and the interior of the other communicating groove is communicated with the interiors of the six second connecting ports.

[0011] Among them, the connecting components include inner strips, outer strips, inner rings, outer rings and plug-in blocks. There are three inner strips in total, and one end of the three inner strips passes through the corresponding first connecting port. There are three outer strips in total, and each of the outer strips is inserted into the outer surface of the corresponding inner strip. There are three plug-in blocks in total, and the three plug-in blocks are respectively inserted into the corresponding top openings. An insert strip is slidably inserted into the top of each insert strip, and the bottom end of each insert strip extends to the inside of the corresponding outer strip. The inner ring is slidably inserted into the concrete pile pipe, and the outer ring is slidably sleeved on the outer surface of the concrete pile pipe. A clamping ring is fixedly connected between the inner surface wall of the outer ring and the outer surface of the inner ring.

[0012] The top of the inner ring extends to the inside of the concrete connecting pipe, the outer ring is slidably sleeved on the outer surface of the concrete connecting pipe, the bottom of the clamping ring fits with the top of the concrete pile pipe, and the top of the clamping ring fits with the bottom of the concrete connecting pipe.

[0013] Among them, six limit frames are equidistantly and fixedly connected to the inner surface wall of the inner ring, the top end of each inner strip extends to the inside of the corresponding limit frame, and one end of each plug block extends to the inside of the corresponding limit frame.

[0014] The method for using bored prestressed concrete composite piles for building construction comprises the following steps: S1. Preparatory treatment: drilling and excavating a designated construction area is performed using existing drilling equipment, and then the guide mechanism is inserted into the hole through the guide piece, ensuring that the outer surface of the guide piece fits the inner wall of the hole. At this time, the functional mechanism is inserted between the multiple guide pieces under the action of the existing pile driving equipment, and at the same time, the first connection port is ensured to be located on one side of the gap between adjacent guide pieces, until more than half of the concrete pile pipe is inserted into the hole; S2, splicing processing: according to the actual depth of the hole, by increasing or decreasing the number of functional mechanisms, one end of the adjacent concrete pile pipes can be extended and connected with the cooperation of the inner ring, the clamp ring and the outer ring, and at the same time, through the corresponding first connecting ports of the adjacent concrete pile pipes, the inner strip can be inserted into the first connecting port located below, and then the outer strip is inserted into the inner strip along the gap between the adjacent guide pieces, and the plug block is inserted into the first connecting port located above, and then the plug block and the corresponding outer strip are connected and restricted by the plug strip, so that the connecting component can stably connect the adjacent concrete pile pipes; S3. Pile processing: until the functional mechanism after splicing can fully enter the interior of the hole, the top concrete pile pipe and the concrete connecting pipe are firmly connected by the connecting parts in cooperation with the top opening. At this time, the push rod and the push bar are inserted between the guide pieces along the gap between the adjacent guide pieces, and then the push rod and the push bar are squeezed by the metal pressing tube and the pressing ring. Under the squeezing of the metal pressing tube, the push bar and the concrete connecting pipe can completely insert the functional mechanism after splicing into the hole. At this time, the guide mechanism and the metal pressing tube are pulled out of the hole by the existing lifting equipment in cooperation with the push piece and the lifting block. At the same time, the steel cage is inserted into the concrete pile pipe by the existing lifting equipment, and then the aggregate and slurry are injected into the hole by the existing grouting equipment. After the aggregate and slurry are solidified, the pile preparation is completed.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In the present invention, when in use, the existing drilling equipment is used to drill and dig a hole in the designated construction area, and then the guide mechanism is inserted into the hole through the guide piece to ensure that the outer surface of the guide piece fits the inner wall of the hole. At this time, the functional mechanism is inserted between the multiple guide pieces under the action of the existing pile driving equipment, and at the same time, it is ensured that the first connecting port is located on one side of the gap between adjacent guide pieces, until the concrete pile pipe is more than half inserted into the hole. According to the actual depth of the hole, by increasing or decreasing the number of functional mechanisms, one end of the adjacent concrete pile pipes can be extended and connected with the cooperation of the inner ring, the clamping ring and the outer ring, and at the same time, through the corresponding first connecting ports of the adjacent concrete pile pipes, the inner strip can be inserted into the first connecting port located below, and then the outer strip is inserted into the inner strip along the gap between the adjacent guide pieces, and then the plug block is inserted into the first connecting port located above, and then the plug block and the corresponding outer strip are connected by the plug strip. The connecting components can firmly connect adjacent concrete pile pipes until the functional mechanism after splicing can fully enter the interior of the hole, and then the top concrete pile pipe and the concrete connecting pipe are firmly connected through the connecting components in cooperation with the top opening. At this time, the push rod and the push bar are inserted between the guide pieces along the gap between the adjacent guide pieces, and then the push rod and the push bar are squeezed by the metal pressing pipe and the pressing ring. Under the squeezing of the metal pressing pipe, the push bar and the concrete connecting pipe can completely insert the spliced ​​functional mechanism into the interior of the hole. At this time, the guide mechanism and the metal pressing pipe are pulled out of the hole by the existing lifting equipment in cooperation with the push piece and the lifting block, and at the same time, the steel cage is inserted into the interior of the concrete pile pipe through the existing lifting equipment, and then the aggregate and slurry are injected into the hole through the existing grouting equipment. After the aggregate and slurry are solidified, the pile preparation is completed, so that different construction conditions can be met while avoiding the construction from causing a large impact on the surrounding environment, and the pile making process can be carried out quickly.

[0016] (2) In the present invention, when in use, the outer strip and the insert block will always fit the inner surface wall of the hole during the process of being inserted into the hole. At the same time, under the position limit of the gap between adjacent guide pieces, the concrete pile pipe can be inserted into the hole in a vertical state, ensuring that the pile body will not deviate during the construction process, so that the pile body can achieve the expected supporting effect. At the same time, by removing the support strips and support rods on the surface of the slurry after solidification, obvious grooves appear on the surface of the slurry after solidification, thereby facilitating the processing of the pile head, accelerating the production efficiency of the foundation, and enabling the equipment to efficiently perform its functions.

[0017] (3) In the present invention, when in use, under the position support and restriction of the guide block, the steel cage can be quickly inserted into the hole, and a certain gap is left between the steel cage and the inner wall of the concrete pile pipe. At the same time, under the support of the outer strip and the insert block, a gap is left between the concrete pile pipe and the inside of the hole. Then, in the process of injecting slurry and aggregate into the concrete pile pipe, the aggregate can quickly fill the hole through the gap between the steel cage and the inner wall of the concrete pile pipe, avoiding the steel cage from hindering the filling of aggregate, ensuring that the pile will not be broken. At the same time, the slurry can fill the gap between the steel cage and the concrete pile pipe in time, ensuring that the inside of the concrete pile pipe can be fully filled. At the same time, under the action of the second connecting port and the connecting groove, the slurry can fully fill the gap between the outer wall of the concrete pile pipe and the inner wall of the hole. At the same time, under the connection support of the inner strip and the outer strip, the use strength of the external slurry after solidification is ensured, so that the prepared pile body can efficiently realize its due functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the present invention when in use; Figure 2 It is a first perspective stereogram of the present invention; Figure 3 It is a second viewing angle stereogram of the present invention; Figure 4 It is a cutaway stereogram of the present invention from a first viewing angle; Figure 5 It is a three-dimensional diagram of the guide mechanism of the present invention; Figure 6 It is a sectional and expanded stereoscopic diagram of the limiting mechanism of the present invention; Figure 7 It is a three-dimensional diagram of the functional mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part A in the middle; Fig. 9 It is a cutaway and expanded stereoscopic view of the functional mechanism of the present invention; Fig.10 For the present invention Fig. 9 Enlarged view of part B; Fig.11 For the present invention Fig. 9 Enlarged view of part C in the middle; Fig.12 For the present invention Fig. 9 Enlarged view of part D in the middle.

[0019] Markings in the figure: 1, guide mechanism; 101, connecting ring; 102, abutment ring; 103, abutment sheet; 104, installation ring; 105, guide sheet; 2. Limiting mechanism; 201. Concrete connecting pipe; 202. Top opening; 203. Retaining rod; 204. Retaining strip; 205. Metal pressing pipe; 206. Pressing ring; 207. Hanging block; 3. Functional mechanism; 301. Concrete pile pipe; 302. First connection port; 303. Second connection port; 304. Guide block; 305. Inner strip; 306. Outer strip; 307. Insert block; 308. Insert strip; 309. Inner ring; 310. Limit frame; 311. Clamp ring; 312. Outer ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] For example, please refer to Figure 1-Figure 3 The bored prestressed concrete composite pile for construction is composed of a guide mechanism 1, a limit mechanism 2 and a functional mechanism 3.

[0022] The details are as follows: See also Figure 4 The guide mechanism 1 includes a mounting ring 104, a guide piece 105 and a supporting component. The outer surface of the mounting ring 104 is provided with an external thread. A plurality of guide pieces 105 are provided. The plurality of guide pieces 105 are fixedly connected to the inner surface wall of the mounting ring 104 at equal intervals. The supporting component is provided on the mounting ring 104. The supporting component includes a connecting ring 101, a retaining ring 102 and a retaining piece 103. The connecting ring 101 is connected to the outer surface of the mounting ring 104 through an external thread. The retaining ring 102 is sleeved on the outer surface of the connecting ring 101. There are two retaining pieces 103, two The abutment piece 103 is fixedly connected to the top of the abutment ring 102. The outer surface of one side of each abutment piece 103 is fixedly connected to the outer surface of the connecting ring 101. Under the connection between the connecting ring 101 and the mounting ring 104, it is convenient to transfer and use the guide mechanism 1. The abutment ring 102 fits with the bottom surface to ensure that the guide mechanism 1 can smoothly realize its functions and ensure that the guide mechanism 1 is not easy to be completely immersed in the hole. The guide piece 105 can be installed and set through the mounting ring 104, and an effective guide gap can be formed through adjacent guide pieces 105. See also Figure 5The limiting mechanism 2 includes a concrete connecting pipe 201, a stopper 203, a stopper strip 204 and a metal pressing pipe 205. The concrete connecting pipe 201 is slidably inserted between the outer surfaces of one side of the plurality of guide pieces 105. There are two groups of stopper strips 203, each group of stopper strips 203 is provided with three. Each stopper strip 203 is slidably inserted inside the mounting ring 104, and the outer surfaces on both sides of each stopper strip 203 are respectively fitted with the outer surfaces of the corresponding two guide pieces 105. There are two stopper strips 204, each of which is fixed respectively. The metal pressing tube 205 is slidably inserted between the outer surfaces of one side of the multiple guide pieces 105, and the outer surface of the concrete connecting tube 201 is equidistantly provided with six top openings 202 near the bottom edge. The top of the concrete connecting tube 201 fits with the bottom of the two push bars 204, and the outer surfaces of the two push bars 204 fit with the outer surfaces of one side of the corresponding multiple guide pieces 105. The top of the two push bars 204 fits with the bottom of the metal pressing tube 205, and the top of the metal pressing tube 205 is fixedly connected with The pressing ring 206 and the inner surface wall of the metal pressing tube 205 are provided with two installation openings near the top, and a hanging block 207 is inserted inside each installation opening. The top concrete pile pipe 301 and the concrete connecting pipe 201 are firmly connected by the connecting component and the top opening 202. At this time, the push rod 203 and the push strip 204 are inserted between the guide pieces 105 along the gap between the adjacent guide pieces 105, and then the push rod 203 and the push strip 204 are squeezed by the metal pressing tube 205 and the pressing ring 206. Under the extrusion of the metal pressing tube 205, the push rod 203 and the push strip 204 are squeezed. The strip 204 and the concrete connecting pipe 201 can completely insert the spliced ​​functional mechanism 3 into the hole. At this time, the guide mechanism 1 and the metal pressing pipe 205 are pulled out of the hole by the existing lifting equipment in cooperation with the stopper 103 and the lifting block 207. At the same time, the steel cage is inserted into the concrete pile pipe 301 by the existing lifting equipment, and then the aggregate and slurry are injected into the hole by the existing grouting equipment. After the aggregate and slurry are solidified, the pile preparation is completed. At the same time, under the position support limit of the guide block 304, the steel cage can be quickly inserted into the hole; See also Figure 6-Figure 12The functional mechanism 3 includes a concrete pile pipe 301 and a connecting component. Six first connecting ports 302 are equidistantly provided on the outer surface of the concrete pile pipe 301 near the bottom edge. Six second connecting ports 303 are equidistantly provided on the outer surface of the concrete pile pipe 301 near the top edge. A plurality of limiting ports are equidistantly provided on the inner surface wall of the concrete pile pipe 301. A guide block 304 is inserted inside each limiting port. The connecting component is arranged on the concrete pile pipe 301. Two connecting grooves are provided on the inner surface wall of the concrete pile pipe 301. The interior of one of the connecting grooves is connected to the interiors of the six first connecting ports 302, and the interior of the other connecting groove is connected to the interiors of the six second connecting ports 303. The connecting component includes an inner strip 305, an outer strip 306, an inner ring 309, and an outer ring 312 and plug block 307, there are three inner strips 305, one end of the three inner strips 305 passes through the corresponding first connection port 302, there are three outer strips 306, each outer strip 306 is inserted into the outer surface of the corresponding inner strip 305, there are three plug blocks 307, the three plug blocks 307 are respectively inserted into the corresponding top opening 202, each plug block 307 is slidably inserted with a plug strip 308 on the top, and the bottom end of each plug strip 308 extends to the inside of the corresponding outer strip 306, the inner ring 309 is slidably inserted into the concrete pile pipe 301, the outer ring 312 is slidably sleeved on the outer surface of the concrete pile pipe 301, a clamping ring 311 is fixedly connected between the inner surface wall of the outer ring 312 and the outer surface of the inner ring 309, and the top of the inner ring 309 extends to the concrete connecting pipe 201, the outer ring 312 is slidably sleeved on the outer surface of the concrete connecting pipe 201, the bottom of the clamping ring 311 is fitted with the top of the concrete pile pipe 301, and the top of the clamping ring 311 is fitted with the bottom of the concrete connecting pipe 201. The inner surface wall of the inner ring 309 is equidistantly fixedly connected with six limit frames 310, and the top of each inner strip 305 extends to the inside of the corresponding limit frame 310, and one end of each plug block 307 extends to the inside of the corresponding limit frame 310. The ends of adjacent concrete pile pipes 301 can be extended and connected under the cooperation of the inner ring 309, the clamping ring 311 and the outer ring 312, and at the same time, through the corresponding first connecting port 302 of the adjacent concrete pile pipe 301, the inner strip 305 can be inserted into the first connecting port 302 located below, and then After the outer strip 306 is inserted into the inner strip 305 along the gap between the adjacent guide pieces 105, the plug block 307 is inserted into the first connecting port 302 located at the top, and the plug strip 308 is used to limit the connection between the plug block 307 and the corresponding outer strip 306, so that the connecting component can stably connect the adjacent concrete pile pipes 301. At the same time, the outer strip 306 and the plug block 307 will always fit the inner surface wall of the hole during the insertion process of the hole. At the same time, under the position limit of the gap between the adjacent guide pieces 105, the concrete pile pipe 301 can be inserted into the hole in a vertical state. Under the support of the outer strip 306 and the plug block 307, a gap is retained between the concrete pile pipe 301 and the inside of the hole, so that in the process of injecting slurry and aggregate into the concrete pile pipe 301,Aggregate can quickly fill the hole through the gap between the steel cage and the inner wall of the concrete pile pipe 301, avoiding the steel cage from hindering the filling of aggregate, ensuring that there will be no broken piles, and at the same time, the slurry can timely fill the gap between the steel cage and the concrete pile pipe 301, ensuring that the inside of the concrete pile pipe 301 can be fully filled, and at the same time, under the action of the second connecting port 303 and the connecting groove, the slurry can fully fill the gap between the outer wall of the concrete pile pipe 301 and the inner wall of the hole, and at the same time, under the connection and support of the inner strip 305 and the outer strip 306, the use strength of the external slurry after solidification is ensured.

[0023] The following is a detailed description of the method for using the bored prestressed concrete composite pile for construction provided by an embodiment of the present invention, and the method for using the bored prestressed concrete composite pile comprises the following steps: Step 1, preparatory treatment: drilling and excavating the designated construction area by using the existing drilling equipment, and then inserting the guide mechanism 1 into the hole through the guide piece 105, ensuring that the outer surface of the guide piece 105 and the inner wall of the hole are in contact, and then inserting the functional mechanism 3 between the multiple guide pieces 105 under the action of the existing pile driving equipment, and ensuring that the first connection port 302 is located on one side of the gap between the adjacent guide pieces 105, until the concrete pile pipe 301 is more than half inserted into the hole; Step 2: Splicing: According to the actual depth of the hole, by increasing or decreasing the number of functional mechanisms 3, one end of the adjacent concrete pile pipes 301 can be extended and connected with the cooperation of the inner ring 309, the clamp ring 311 and the outer ring 312, and at the same time, the adjacent concrete pile pipes 301 correspond to the first connecting ports 302, so that the inner strip 305 can be inserted into the first connecting port 302 located below, and then the outer strip 306 is inserted into the inner strip 305 along the gap between the adjacent guide pieces 105, and the plug block 307 is inserted into the first connecting port 302 located above. The first connecting port 302 is provided inside the square, and the inserting strip 308 is used to limit the connection between the inserting block 307 and the corresponding outer strip 306, so that the connecting component can stably connect the adjacent concrete pile pipes 301. At the same time, the outer strip 306 and the inserting block 307 will always fit the inner surface wall of the hole during the insertion process. At the same time, under the position limit of the gap between the adjacent guide pieces 105, the concrete pile pipe 301 can be inserted into the hole in a vertical state, ensuring that the pile body will not deviate during the construction process, so that the pile body can achieve the expected support effect; Step 3, pile processing: until the spliced ​​functional mechanism 3 can fully enter the interior of the hole, the top concrete pile pipe 301 and the concrete connecting pipe 201 are firmly connected by the connecting component and the top opening 202. At this time, the push rod 203 and the push strip 204 are inserted between the guide pieces 105 along the gap between the adjacent guide pieces 105, and then the push rod 203 and the push strip 204 are squeezed by the metal pressing tube 205 and the pressing ring 206. Under the squeezing of the metal pressing tube 205, the push strip 204 and the concrete connecting pipe 201 can completely insert the spliced ​​functional mechanism 3 into the hole. At this time, the guide mechanism 1 and the metal pressing tube 205 are pulled out of the hole by the existing lifting equipment in cooperation with the push piece 103 and the hanging block 207. At the same time, the steel cage is inserted into the concrete pile pipe 301 through the existing lifting equipment, and then the aggregate and slurry are injected into the hole through the existing grouting equipment. After the aggregate and slurry are solidified, the pile preparation is completed. At the same time, under the position support restriction of the guide block 304 , so that the steel cage can be quickly inserted into the hole, and at the same time, a certain gap is left between the steel cage and the inner wall of the concrete pile pipe 301. At the same time, under the support of the outer strip 306 and the plug block 307, a gap is left between the concrete pile pipe 301 and the inside of the hole, and then in the process of injecting slurry and aggregate into the concrete pile pipe 301, the aggregate can quickly fill the hole through the gap between the steel cage and the inner wall of the concrete pile pipe 301, avoiding the steel cage from hindering the filling of aggregate, ensuring that there will be no broken piles, and at the same time, the slurry can fill the gap between the steel cage and the concrete pile pipe 301 in time, ensuring that the inside of the concrete pile pipe 301 can be fully filled, and at the same time, under the action of the second connecting port 303 and the connecting groove, the slurry can fully fill the gap between the outer wall of the concrete pile pipe 301 and the inner wall of the hole, and at the same time, under the connection and support of the inner strip 305 and the outer strip 306, the use strength of the external slurry after solidification is ensured, so that the prepared pile body can efficiently realize its due functions.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bored prestressed concrete composite pile for building construction, characterized in that: include: A guide mechanism (1), the guide mechanism (1) comprising a mounting ring (104), a guide sheet (105) and a support component, the mounting ring (104) having an outer surface provided with an external thread, a plurality of guide sheets (105) being provided, the plurality of guide sheets (105) being equidistantly fixedly connected to an inner surface wall of the mounting ring (104), and the support component being provided on the mounting ring (104); A limiting mechanism (2), the limiting mechanism (2) comprising a concrete connecting pipe (201), a stopper rod (203), a stopper strip (204) and a metal pressing pipe (205), the concrete connecting pipe (201) being slidably inserted between the outer surfaces of one side of a plurality of guide plates (105), two groups of the stopper rods (203) being provided, each group of the stopper rods (203) being provided with three stopper rods (203), each of the stopper rods (203) being slidably inserted inside the mounting ring (104), and the outer surfaces on both sides of each stopper rod (203) being respectively fitted with the outer surfaces of the corresponding two guide plates (105), two stopper strips (204) being provided, each of the stopper strips (204) being respectively fixedly connected between the bottom ends of the corresponding three stopper rods (203), and the metal pressing pipe (205) being slidably inserted between the outer surfaces of one side of the plurality of guide plates (105); and A functional mechanism (3), the functional mechanism (3) comprising a concrete pile pipe (301) and a connecting component, the outer surface of the concrete pile pipe (301) being provided with six first connecting ports (302) at equal intervals near the bottom edge, the outer surface of the concrete pile pipe (301) being provided with six second connecting ports (303) at equal intervals near the top edge, the inner surface wall of the concrete pile pipe (301) being provided with a plurality of limiting ports at equal intervals, a guide block (304) being inserted into each limiting port, and the connecting component being arranged on the concrete pile pipe (301).

2. The bored prestressed concrete composite pile for construction as claimed in claim 1, characterized in that: The supporting component comprises a connecting ring (101), a butt ring (102) and a butt piece (103); the connecting ring (101) is connected to the outer surface of the mounting ring (104) via an external thread; the butt ring (102) is sleeved on the outer surface of the connecting ring (101); two butt pieces (103) are provided; the two butt pieces (103) are fixedly connected to the top of the butt ring (102); and the outer surface of one side of each butt piece (103) is fixedly connected to the outer surface of the connecting ring (101).

3. The bored prestressed concrete composite pile for construction as claimed in claim 2, characterized in that: Six top openings (202) are equidistantly formed on the outer surface of the concrete connecting pipe (201) near the bottom edge, and the top of the concrete connecting pipe (201) and the bottoms of the two stop strips (204) are in close contact with each other.

4. The bored prestressed concrete composite pile for construction as claimed in claim 3, characterized in that: The outer surfaces of the two resisting strips (204) are in contact with the outer surfaces of one side of the corresponding plurality of guide plates (105), and the tops of the two resisting strips (204) are in contact with the bottom of the metal pressing tube (205).

5. The bored prestressed concrete composite pile for construction as claimed in claim 4, characterized in that: A pressing ring (206) is fixedly connected to the top of the metal pressing tube (205), and two installation openings are provided on the inner surface wall of the metal pressing tube (205) near the top, and a hanging block (207) is inserted into each of the installation openings.

6. The bored prestressed concrete composite pile for construction as claimed in claim 5, characterized in that: The inner surface wall of the concrete pile pipe (301) is provided with two communicating grooves, wherein the interior of one of the communicating grooves is communicated with the interiors of the six first connecting ports (302), and the interior of the other communicating groove is communicated with the interiors of the six second connecting ports (303).

7. The bored prestressed concrete composite pile for construction as claimed in claim 6, characterized in that: The connecting component comprises an inner strip (305), an outer strip (306), an inner ring (309), an outer ring (312) and an insert block (307). A total of three inner strips (305) are provided, and one end of each of the three inner strips (305) passes through the corresponding first connecting port (302). A total of three outer strips (306) are provided, and each of the outer strips (306) is inserted into the outer surface of the corresponding inner strip (305). A total of three insert blocks (307) are provided, and the three insert blocks (307) are respectively The outer ring (312) is inserted into the corresponding top opening (202), and each of the insert blocks (307) is slidably inserted with an insert strip (308). The bottom end of each of the insert strips (308) extends to the inside of the corresponding outer strip (306). The inner ring (309) is slidably inserted into the concrete pile tube (301), and the outer ring (312) is slidably sleeved on the outer surface of the concrete pile tube (301). A clamping ring (311) is fixedly connected between the inner surface wall of the outer ring (312) and the outer surface of the inner ring (309).

8. The bored prestressed concrete composite pile for construction as claimed in claim 7, characterized in that: The top end of the inner ring (309) extends into the interior of the concrete connecting pipe (201), the outer ring (312) is slidably sleeved on the outer surface of the concrete connecting pipe (201), the bottom of the clamping ring (311) fits with the top of the concrete pile pipe (301), and the top of the clamping ring (311) fits with the bottom of the concrete connecting pipe (201).

9. The bored prestressed concrete composite pile for construction as claimed in claim 8, characterized in that: The inner surface wall of the inner ring (309) is equidistantly and fixedly connected with six limit frames (310), the top end of each inner strip (305) extends into the inside of the corresponding limit frame (310), and one end of each plug block (307) extends into the inside of the corresponding limit frame (310).

10. A method for using a bored prestressed concrete composite pile for construction, characterized in that: The method is applied to the bored prestressed concrete composite pile for construction as claimed in claim 9, comprising the following steps: S1, preparatory treatment: drilling and excavating a designated construction area by using existing drilling equipment, then inserting the guide mechanism (1) into the hole through the guide piece (105), ensuring that the outer surface of the guide piece (105) fits the inner wall of the hole, and then inserting the functional mechanism (3) between the plurality of guide pieces (105) under the action of the existing pile driving equipment, while ensuring that the first connection port (302) is located on one side of the gap between adjacent guide pieces (105), until more than half of the concrete pile pipe (301) is inserted into the hole; S2, splicing processing: according to the actual depth of the hole, by increasing or decreasing the number of functional mechanisms (3), one end of adjacent concrete pile pipes (301) can be extended and connected with each other under the cooperation of the inner ring (309), the clamping ring (311) and the outer ring (312), and at the same time, through the corresponding first connecting openings (302) of the adjacent concrete pile pipes (301), the inner strip (305) can be inserted into the first connecting opening (302) located below, and then the outer strip (306) is inserted into the inner strip (305) along the gap between the adjacent guide pieces (105), and then the plug block (307) is inserted into the first connecting opening (302) located above, and then the plug block (307) and the corresponding outer strip (306) are connected and restricted by the plug strip (308), so that the connecting component can stably connect the adjacent concrete pile pipes (301); S3, pile forming process: until the functional mechanism (3) after splicing can fully enter the hole, the top concrete pile pipe (301) and the concrete connecting pipe (201) are firmly connected by the connecting component and the top opening (202), at this time, the push rod (203) and the push strip (204) are inserted between the guide pieces (105) along the gap between the adjacent guide pieces (105), and then the push rod (203) and the push strip (204) are squeezed by the metal pressing tube (205) and the pressing ring (206). Under the extrusion of the pressing tube (205), the stopper (204) and the concrete connecting tube (201) can completely insert the spliced ​​functional mechanism (3) into the hole. At this time, the guide mechanism (1) and the metal pressing tube (205) are pulled out of the hole by the existing lifting equipment in cooperation with the stopper (103) and the lifting block (207). At the same time, the steel cage is inserted into the concrete pile tube (301) by the existing lifting equipment. Aggregates and slurry are then injected into the hole by the existing grouting equipment. After the aggregates and slurry are solidified, the pile preparation is completed.

Images