Opposite-pulling supporting structure based on existing supporting piles

Abstract

The utility model relates to the technical field of reinforcing structures of foundation pit edges, in particular to an opposite-pulling supporting structure based on existing supporting piles, a foundation is provided with a first foundation pit and a second foundation pit, and a plurality of supporting piles of existing buildings which are distributed in the front-back direction and are vertically oriented are embedded in the side, close to the first foundation pit, of the second foundation pit. The second foundation pit is a fat groove of the existing building; the supporting structure comprises a plurality of foundation piles and a plurality of opposite-pulling anchor rods, the foundation piles are all arranged on the side, close to the second foundation pit, of the first foundation pit, and the foundation piles are all vertically oriented and distributed front and back; the opposite-pulling anchor rods are horizontally oriented, and the two ends of the opposite-pulling anchor rods are connected with the supporting piles and the foundation piles correspondingly, so that the supporting piles tighten the foundation piles through the opposite-pulling anchor rods. The opposite-pulling anchor rod supporting structure has the advantages that the supporting piles serve as supporting points of the opposite-pulling anchor rods, an existing building structure is ingeniously utilized, the construction cost is reduced, the construction period is shortened, and resources are saved.

Description

Technical Field

[0001] This utility model relates to the technical field of reinforcement structures for the edge of foundation pits, and in particular to a tension support structure based on existing support piles. Background Technology

[0002] With the rapid urbanization in my country, urban construction is encountering an increasing number of deep foundation pit projects. As construction land becomes increasingly scarce, more and more deep foundation pits need to be constructed in densely populated urban areas, inevitably leading to the problem of supporting adjacent deep foundation pits. When the distance between adjacent foundation pits is 10-20m, it is considered a small clearance. When a site with such a small clearance is in a special situation, such as having a superstructure or being a major transportation route, making excavation impossible and requiring preservation, conventional pile-anchor support is no longer suitable due to issues such as anchor cable anchorage length, anchorage force, and the impact of anchor bolt construction on existing foundation piles. Therefore, providing a support method suitable for this scenario is an urgent problem to be solved. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a tie-support structure based on existing support piles to meet the support requirements of small-clearance plots in the prior art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] In a first aspect, this utility model provides a tie rod support structure based on existing support piles. A first foundation pit and a second foundation pit are provided on the foundation. Multiple support piles of the existing building are pre-embedded on the side of the second foundation pit near the first foundation pit, and the second foundation pit is the trench of the existing building. The support structure includes multiple foundation piles and multiple tie rods. The foundation piles are all located on the side of the first foundation pit near the second foundation pit, and the foundation piles are all vertically oriented and distributed front to back. The tie rods are horizontally oriented and their two ends are respectively connected to the support piles and the foundation piles, so that the support piles are tightened to the foundation piles through the tie rods. The tie rods pass through the gaps between adjacent support piles and adjacent foundation piles, and are configured as multiple piles distributed in the front to back direction.

[0008] (III) Beneficial Effects

[0009] The beneficial effects of this utility model are as follows: The tie rod support structure based on existing support piles of this utility model forms a collaborative support system by connecting the support piles of the existing building with the newly installed foundation piles through horizontal tie rods. This structure not only utilizes the support capacity of the existing support piles, but also enhances the stability and safety of the entire support structure through the newly added foundation piles and tie rods. When used for foundation treatment of new construction projects adjacent to existing buildings, it can effectively reduce the impact on existing buildings, while ensuring the safe construction of new projects.

[0010] Support piles, serving as fulcrums for tie rods, cleverly utilize the existing building structure, reducing project costs, shortening the construction period, and saving resources. Attached Figure Description

[0011] Figure 1 This is one of the structural schematic diagrams of the tie-support structure based on existing support piles of this utility model;

[0012] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0013] Figure 3 This utility model Figure 1 A magnified schematic diagram of the local structure at point B;

[0014] Figure 4 This is a schematic diagram of the structure of the tube body and the tie rod of this utility model;

[0015] Figure 5 This is a top view of the waist beam, support pile, foundation pile and tie rod in one embodiment of the present invention;

[0016] Figure 6 This utility model Figure 5 A magnified schematic diagram of the local structure at point D;

[0017] Figure 7 This utility model Figure 5 A magnified schematic diagram of the local structure at point E;

[0018] Figure 8 This is a top view of the waist beam, support pile, foundation pile and tie rod in another embodiment of the present invention.

[0019] [Explanation of Labels in the Attached Image]

[0020] 100. First foundation pit;

[0021] 200. Second foundation pit;

[0022] 1. Support piles;

[0023] 2. Foundation piles;

[0024] 3. Tie rods;

[0025] 4. Pipe body;

[0026] 5. Waist beam;

[0027] 6. First connecting assembly; 61. Pressure plate; 62. Nut;

[0028] 7. Second connecting component; 71. Fastener;

[0029] 8. Crown beam;

[0030] 9. Reinforce anchor bolts;

[0031] 10. Still water curtain. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the following description is provided in conjunction with the appendix. Figures 1-8 This utility model will be described in detail through specific embodiments. The terms "front" and "rear" as used herein refer to... Figure 1 The direction perpendicular to the paper, directional nouns such as "down" and "right" Figure 1 The orientation is used as a reference.

[0033] Example 1:

[0034] Reference Figures 1-8 This utility model provides a tie rod support structure based on existing support piles. A first foundation pit 100 and a second foundation pit 200 are opened on the foundation. Multiple support piles 1 of the existing building are pre-embedded on the side of the second foundation pit 200 near the first foundation pit 100, and the second foundation pit 200 is the trench of the existing building. The support structure includes multiple foundation piles 2 and multiple tie rods 3. The foundation piles 2 are all located on the side of the first foundation pit 100 near the second foundation pit 200, and the foundation piles 2 are all vertically oriented and distributed front and back. The tie rods 3 are horizontally oriented and their two ends are respectively connected to the support piles 1 and the foundation piles 2, so that the support piles 1 are tightened to the foundation piles 2 through the tie rods 3. The tie rods 3 pass through the gap between adjacent support piles 1 and adjacent foundation piles 2, and are configured to be multiple in a front and back direction.

[0035] In this embodiment, during the foundation treatment process, it is necessary to excavate a foundation pit for foundation construction. When the new construction project is adjacent to an existing building, a first foundation pit 100 and a second foundation pit 200 can be excavated on the foundation. Multiple vertically oriented and front-to-back support piles 1 of the existing building are pre-embedded on the side of the second foundation pit 200 closest to the first foundation pit 100. These support piles 1 were originally installed to support the existing building and will now be used in the support structure of the new construction project. The second foundation pit 200 is opened at the location of the existing building's trench to avoid affecting the strength of the existing building.

[0036] The foundation piles 2 are installed on the side of the first foundation pit 100 near the second foundation pit 200. They are also vertically oriented and distributed front to back. These foundation piles 2 are newly installed to enhance the stability of the foundation of the new project. The tie rods 3 are horizontally oriented, with one end connected to the existing support piles 1 and the other end connected to the newly installed foundation piles 2. In this way, the support piles 1 are tightened to the foundation piles 2 by the tie rods 3, forming a stable overall support structure. The tie rods 3 pass through the gaps between adjacent support piles 1 and adjacent foundation piles 2, and multiple rods are installed along the front to back to ensure the integrity and stability of the support structure, and also to allow the anchors to make way for the foundation piles 2 and support piles 1.

[0037] By connecting the existing support piles 1 and the newly installed foundation piles 2 with horizontal tie rods 3, a collaborative support system is formed. This structure not only utilizes the support capacity of the existing support piles 1, but also enhances the stability and safety of the entire support structure through the newly added foundation piles 2 and tie rods 3. When used for foundation treatment of new construction projects adjacent to existing buildings, it can effectively reduce the impact on existing buildings while ensuring the safe construction of new projects.

[0038] Support pile 1 serves as the support point for tie rod 3, cleverly utilizing the existing building structure, reducing project costs, shortening the construction period, and saving resources.

[0039] In summary, the embodiments of this utility model provide a highly efficient and safe tension support structure based on existing support piles 1, which is particularly suitable for new construction projects adjacent to existing buildings.

[0040] Example 2:

[0041] Reference Figure 4 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0042] The tie-support structure based on existing support piles also includes a pipe body 4 that corresponds one-to-one with the tie anchor 3 and is horizontally oriented. The pipe body 4 is located in the foundation to form a tie channel that allows the tie anchor 3 to pass through.

[0043] In this embodiment, in order to construct the support structure more efficiently and ensure that the tie rods 3 can pass smoothly and stably through the gap between the support piles 1 and the foundation piles 2, this embodiment of the invention provides pipe bodies 4 in the foundation that correspond one-to-one with the tie rods 3. These pipe bodies 4 are also horizontally oriented, providing a clear and easy-to-pass tie channel for the tie rods 3.

[0044] The installation of the pipe body 4 not only simplifies the installation process of the tie rods 3, but also improves the overall stability and safety of the support structure. Because the pipe body 4 provides a fixed path for the tie rods 3, the anchor holes are less likely to collapse after drilling, thus keeping the tie rod channel unobstructed and improving the convenience of installing the tie rods 3.

[0045] By pre-installing the pipe body 4 within the foundation, construction workers can install the tie rods 3 more accurately and quickly, thereby improving the construction convenience and efficiency of the entire support structure. Furthermore, the installation of the pipe body 4 can reduce rework and repair costs caused by improper installation of the tie rods 3.

[0046] The construction efficiency of the support structure has been significantly improved. Because the pipe body 4 provides a clear installation path for the tie rods 3, construction workers can complete the construction of the support structure more quickly, thereby reducing construction costs and time costs.

[0047] In summary, the tie-bar support structure based on existing support piles proposed in this embodiment of the utility model further improves the stability and construction efficiency of the support structure by introducing a horizontally oriented pipe body 4 that corresponds one-to-one with the tie-bar anchor 3, providing an efficient and safe solution for complex foundation treatment scenarios.

[0048] Example 3:

[0049] Reference Figures 1-3 , Figures 5-8 In addition to possessing all the technical solutions of any of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0050] The tie-support structure based on the existing support piles also includes two sets of front-to-back oriented waist beams 5. The two sets of waist beams 5 are located on opposite sides of the foundation pile 2 and the existing support pile 1, respectively. The two ends of the tie-anchor rod 3 are connected to the two sets of waist beams 5, so that the two sets of waist beams 5 press against the corresponding foundation pile 2 and the existing support pile 1, thereby allowing the support pile 1 to tighten the foundation pile 2 through the tie-anchor rod 3.

[0051] In this embodiment, the two ends of the tie rod 3 are respectively connected to two sets of waist beams 5. When the tie rod 3 is subjected to tension, it will transfer the tension to the foundation pile 2 and the existing support pile 1 through the waist beams 5, so that they are subjected to uniform pressure. This connection method not only improves the overall stability of the support structure, but also avoids structural damage caused by excessive local stress.

[0052] The tie rods 3 transmit tensile force through the connecting beams 5, making the support structure more uniform and stable under stress. This avoids structural damage caused by excessive local stress and improves the overall durability of the support structure.

[0053] Example 4:

[0054] Reference Figures 1-3 , Figures 5-8 In addition to possessing all the technical solutions of Embodiment 3 described above, the embodiments of this utility model further possess the following technical solutions:

[0055] The tie rod support structure also includes a first connecting component 6. One end of the tie rod 3 near the pile 2 is connected to the corresponding waist beam 5 through the first connecting component 6. The first connecting component 6 includes a pressure plate 61 and a nut 62. The tie rod 3 includes a rod body. A first threaded section is formed on one axial side of the rod body. The first threaded section passes through the pressure plate 61. The pressure plate 61 and the nut 62 are both located on the side of the waist beam 5 away from the pile 2. The nut 62 is threaded onto the corresponding first threaded section to press the pressure plate 61 against the corresponding waist beam 5. The first connecting component 6 also includes a washer disposed between the pressure plate 61 and the nut 62.

[0056] The tie rod support structure also includes a second connecting component 7. One end of the tie rod 3 near the support pile 1 is connected to the corresponding waist beam 5 via the first connecting component 6. The second connecting component 7 includes a fixing member 71, which is connected to the corresponding waist beam 5 to tighten the corresponding waist beam 5.

[0057] In this embodiment, one end of the rod can be threaded to the nut 62, thereby achieving the fastening effect on the pressure plate 61 and the waist beam 5.

[0058] One end of the rod is connected to a side beam 5 via a first connecting component 6, and the other end of the rod is fixed to another side beam 5 via a second connecting component 7. As the nut 62 is tightened, the pressure plate 61 is gradually pressed against the corresponding beam 5. This connection method not only ensures a tight connection between the tie rod 3 and the beam 5, but also provides sufficient fastening force to resist external loads and deformation.

[0059] A washer is placed between the pressure plate 61 and the nut 62. The washer can distribute the pressure of the nut 62 on the pressure plate 61 and prevent the pressure plate 61 from being damaged due to excessive local stress. At the same time, the washer can also play a role in preventing loosening and ensure that the first connecting assembly 6 remains stable during long-term use.

[0060] The first connecting component 6, through the synergistic action of the pressure plate 61, nut 62 and washer, ensures a firm connection between the tie rod 3 and the waist beam 5, thereby improving the overall rigidity and load-bearing capacity of the support structure.

[0061] The design of the first connecting component 6 makes the installation and removal of the tie rod 3 more convenient and quick. Construction workers can easily connect or disconnect the tie rod 3 from the joist 5 by simply tightening or loosening the nut 62, thereby improving construction efficiency.

[0062] The fastener 71 can be set to be embedded in the corresponding waist beam 5 to bear the tensile force. This setting method, in which the rod is loaded on one side by the nut 62 and the rod is pulled by the fastener 71 on the other side, can simplify the structure of the connecting components and improve construction efficiency.

[0063] Each waist beam 5 has a waist hole extending in the front-to-back direction, through which the rod passes; a connecting groove is provided on the waist beam 5 near the support pile 1, and the fixing member 71 is connected in the connecting groove, and the fixing member 71 can move back and forth in the connecting groove.

[0064] In this embodiment, the main function of the waist hole is to allow the tie rod 3 to pass through, thereby achieving the connection between the tie rod 3 and the waist beam 5. The design of the waist hole allows the tie rod 3 to be flexibly adjusted back and forth on the waist beam 5 to adapt to different construction needs and foundation conditions. Construction personnel can adjust the back and forth position of the tie rod 3 in the waist hole as needed to adapt to the position requirements of the anchor rod and improve the adaptability of the waist beam 5 to the back and forth position of the anchor rod.

[0065] Example 5:

[0066] Reference Figure 8 In addition to possessing all the technical solutions of Embodiment 4 described above, the embodiments of this utility model further possess the following technical solutions:

[0067] The wainscoting 5 is configured as multiple wainscoting distributed along the front-to-back direction, with each pair of adjacent support piles 1 and each pair of adjacent foundation piles 2 corresponding to another set of wainscoting 5.

[0068] In this embodiment, on the side opposite to the support pile 1 or the foundation pile 2, the waist beam 5 is set as multiple beams that are oriented front and back and distributed sequentially. Each pair of adjacent foundation piles 2 corresponds to one waist beam 5, and each pair of adjacent support piles 1 corresponds to one waist beam 5. In this way, the two opposing waist beams 5, together with the tie rods 3, realize the tie between the two opposing foundation piles 2 and the support pile 1, making the construction more flexible.

[0069] Meanwhile, when the support piles 1 and the foundation piles 2 are not neatly arranged and are staggered, since the two support piles 1 and the foundation piles 2 correspond to a set of waist beams 5, after the tie rods 3 are tightened, and since the waist beams 5 and the tie rods 3 cooperate through the waist holes, the waist beams 5 can automatically fit into the two adjacent support piles 1 or foundation piles 2, thereby improving the reliability of the tie support structure.

[0070] Example 6:

[0071] Reference Figure 5 In addition to possessing all the technical solutions of Embodiment 4 described above, the embodiments of this utility model further possess the following technical solutions:

[0072] The lumbar beam 5 is set as an integrated structure with front and rear orientation. All the support piles 1 correspond to one set of lumbar beams 5, and all the foundation piles 2 correspond to another set of lumbar beams 5.

[0073] In this embodiment, the wainscoting 5 is designed as a front-to-back oriented integral structure, meaning that the wainscoting 5 extends along its length, covering all the support piles 1 or foundation piles 2. This arrangement simplifies the construction of the support structure, reduces the number of wainscoting 5, and lowers construction costs. Simultaneously, because the wainscoting 5 is a front-to-back oriented integral structure, it can effectively connect the support piles 1 and foundation piles 2 together, forming a unified support system. This helps improve the overall stiffness and stability of the support structure, enabling it to better resist external loads and deformations.

[0074] Since each of the support piles 1 and the foundation piles 2 corresponds to only one set of lintel beams 5, the construction of the support structure is greatly simplified. At the same time, the number of lintel beams 5 is reduced, thus lowering construction costs and time costs.

[0075] The integrated structure of the wainscoting 5 and the convenient connection method of the tie rods 3 make the construction of the support structure simpler and more efficient. Construction workers can quickly pass the tie rods 3 through the wainscoting holes and fix them to the wainscoting 5 using the first connecting component 6, thereby improving construction efficiency.

[0076] Example 7:

[0077] Reference Figure 1 and Figure 2 In addition to possessing all the technical solutions of any of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0078] The tension support structure also includes front and rear oriented capping beams 8, which are fixedly connected to the top of all the foundation piles 2; the capping beams 8 are welded to the foundation piles 2.

[0079] In this embodiment, the capping beam 8 and the foundation piles 2 are connected by welding. Through welding, the capping beam 8 can effectively connect the foundation piles 2 into a whole, forming a more stable support structure.

[0080] The capping beam 8 not only enhances the stability of the support structure at the top, but also works in conjunction with other components in the tie-support structure, such as the wainscoting beam 5 and the tie anchors 3, to jointly resist external loads and deformations. When the support structure is subjected to loads, the capping beam 8 can disperse and transfer the loads, reducing the stress on the foundation piles 2 and the support piles 1, thereby improving the bearing capacity and stability of the entire support structure.

[0081] The addition of cap beam 8 provides extra support and reinforcement to the top of the support structure, enhancing its overall stability and integrity. This helps prevent structural damage caused by foundation deformation or external loads.

[0082] The robust connection between the capping beam 8 and the foundation piles 2 enables the support structure to better withstand external loads. When the support structure is subjected to loads, the capping beam 8 can distribute and transfer the loads, reducing the stress on the foundation piles 2 and the support piles 1, thereby improving the overall bearing capacity of the support structure.

[0083] The capping beam 8 is connected to the foundation pile 2 by welding. This connection method is simple and quick, and can significantly shorten the construction period. At the same time, the setting of capping beam 8 also reduces the need for additional support structures, further simplifying the construction process and improving construction efficiency.

[0084] Example 8:

[0085] Reference Figure 1 In addition to possessing all the technical solutions of any of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0086] The tension support structure also includes a reinforcing anchor 9, one end of which is connected to the foundation pile 2, and the other end extends and is anchored in the foundation. The reinforcing anchor 9 gives way to the position of the support pile 1 and the existing building.

[0087] In this embodiment, the reinforcing anchor 9 is an anchor that penetrates deep into the foundation. One end of the anchor is connected to the pile 2, and the other end extends and is anchored inside the foundation. It not only enhances the connection between the support structure and the foundation, but also helps to effectively transfer the load of the support structure to the foundation, thereby improving the overall stability.

[0088] When installing the reinforcing anchors 9, special care should be taken to avoid the locations of the support piles 1 and existing buildings. This is to ensure that the installation of the reinforcing anchors 9 will not cause any damage to the existing support piles 1 and existing buildings, while ensuring the integrity and safety of the support structure.

[0089] The reinforcing anchor 9 works in conjunction with other components in the tension support structure to form a stable support system. When the support structure is subjected to external loads, the reinforcing anchor 9 can effectively transfer the load to the foundation, reducing the stress on the support piles 1 and the foundation piles 2, thereby improving the bearing capacity and stability of the entire support structure.

[0090] Example 9:

[0091] Reference Figure 1 In addition to possessing all the technical solutions of any of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0092] The tie-support structure also includes a water-stop curtain 10 located between the first foundation pit 100 and the second foundation pit 200. The water-stop curtain 10 is vertically oriented and extends back and forth, and the tie-support channel passes through the water-stop curtain 10.

[0093] In this embodiment, the water-stop curtain 10 is designed as a vertically oriented structure extending forward and backward, located between the first foundation pit 100 and the second foundation pit 200. Its main function is to prevent groundwater from seeping into the foundation pit from the outside, thereby maintaining a dry environment inside the foundation pit, which is conducive to the normal progress of construction and the stability of the support structure.

[0094] To meet the connection requirements between the support pile 1 and the foundation pile 2 in the tie-support structure, the tie-support channel is designed to pass through the water-stop curtain 10. This requires the water-stop curtain 10 to have a certain degree of flexibility and sealing in the location of the tie-support channel to ensure that groundwater does not seep into the foundation pit through the channel.

[0095] The water-stop curtain 10 works in conjunction with other components in the tie-support structure, such as the support piles 1, foundation piles 2, lintel beams 5, tie-anchors 3, and reinforcing anchors 9, to form a stable support system. The presence of the water-stop curtain 10 effectively blocks the influence of groundwater, enabling the support structure to better resist external loads and deformations, thus improving overall stability.

[0096] It can be understood that, except for conflicting parts, the above embodiments 1-9 can be freely combined to form other embodiments of this utility model.

[0097] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0098] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0099] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0100] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0101] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A tension support structure based on existing retaining piles, characterized in that, The foundation has a first foundation pit (100) and a second foundation pit (200). On the side of the second foundation pit (200) close to the first foundation pit (100), there are multiple support piles (1) of the existing building that are distributed in the front-back direction and vertically oriented. The second foundation pit (200) is the trench of the existing building. The support structure includes multiple foundation piles (2) and multiple tie rods (3). The foundation piles (2) are all located on the side of the first foundation pit (100) near the second foundation pit (200). The foundation piles (2) are all vertically oriented and distributed front and back. The tie rod (3) is horizontally oriented and its two ends are respectively connected to the support pile (1) and the foundation pile (2) so that the support pile (1) is tightened to the foundation pile (2) by the tie rod (3); the tie rod (3) passes through the gap between the adjacent support pile (1) and the adjacent foundation pile (2) and is configured to be multiple in a front-back direction.

2. The tension support structure based on existing retaining piles as described in claim 1, characterized in that: It also includes a pipe (4) that corresponds one-to-one with the tie rod (3) and is horizontally oriented. The pipe (4) is located in the foundation to form a tie channel that allows the tie rod (3) to pass through.

3. The tension support structure based on existing retaining piles as described in claim 2, characterized in that: It also includes two sets of front-to-back oriented waist beams (5), the two sets of waist beams (5) are respectively located on the opposite side of the foundation pile (2) and the existing support pile (1), and the two ends of the tie rod (3) are connected to the two sets of waist beams (5) respectively, so that the two sets of waist beams (5) press against the corresponding foundation pile (2) and the existing support pile (1), thereby making the support pile (1) tighten the foundation pile (2) through the tie rod (3).

4. The tension support structure based on existing retaining piles as described in claim 3, characterized in that: It also includes a first connecting component (6), wherein one end of the tie rod (3) near the foundation pile (2) is connected to the corresponding waist beam (5) through the first connecting component (6); The first connecting assembly (6) includes a pressure plate (61) and a nut (62). The tie rod (3) includes a rod body, and a first threaded section is formed on one axial side of the rod body. The first threaded section passes through the pressure plate (61). The pressure plate (61) and the nut (62) are both located on the side of the waist beam (5) away from the foundation pile (2). The nut (62) is threaded onto the corresponding first threaded section to press the pressure plate (61) against the corresponding waist beam (5). The first connecting assembly (6) also includes a washer disposed between the pressure plate (61) and the nut (62). It also includes a second connecting component (7), wherein one end of the tie rod (3) near the support pile (1) is connected to the corresponding waist beam (5) through the first connecting component (6); The second connecting component (7) includes a fastener (71) connected to the corresponding waist beam (5) to tighten the corresponding waist beam (5) by means of the fastener (71).

5. The tension support structure based on existing retaining piles as described in claim 4, characterized in that: The waist beam (5) is provided with waist holes extending in the front-to-back direction, and the rod passes through the waist holes; A connecting groove is provided on the waist beam (5) near the support pile (1), and the fixing member (71) is connected in the connecting groove, and the fixing member (71) can move back and forth in the connecting groove.

6. The tension support structure based on existing retaining piles as described in claim 4, characterized in that: The waist beams (5) are arranged in multiple ways along the front-back direction, and each pair of adjacent support piles (1) and each pair of adjacent foundation piles (2) corresponds to another set of waist beams (5).

7. The tension support structure based on existing retaining piles as described in claim 4, characterized in that: The waist beam (5) is set as an integrated structure with front and rear orientation. All the support piles (1) correspond to one set of waist beams (5), and all the foundation piles (2) correspond to another set of waist beams (5).

8. The tie-support structure based on existing retaining piles as described in any one of claims 1-7, characterized in that: It also includes a front-to-back oriented crown beam (8), which is fixedly connected to the top of all the foundation piles (2); the crown beam (8) is welded to the foundation piles (2).

9. The tie-support structure based on existing retaining piles as described in any one of claims 1-7, characterized in that: It also includes a reinforcing anchor (9), one end of which is connected to the foundation pile (2), and the other end extends and is anchored in the foundation. The reinforcing anchor (9) gives way to the position of the support pile (1) and the existing building.

10. The tension support structure based on existing retaining piles as described in any one of claims 2-7, characterized in that: It also includes a water-stop curtain (10) located between the first foundation pit (100) and the second foundation pit (200), the water-stop curtain (10) being vertically oriented and extending back and forth, and the tie-down channel passing through the water-stop curtain (10).

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