Underground space structure passing through existing building foundation and construction method

Abstract

The application discloses a kind of underground space structures and construction methods of down through existing building foundation, it includes wall, wall both sides are equipped with multiple steel pipe piles, steel pipe pile top is equipped with horizontal steel beam, horizontal steel beam top is equipped with multiple positioning components, horizontal steel beam top is equipped with multiple longitudinal steel beams, steel pipe pile top middle is equipped with support component, longitudinal steel beam top is equipped with multiple angle steels located at the bottom of wall pipe gallery, this kind of underground space structures and construction methods of down through existing building foundation, steel pipe pile is fixed on foundation, horizontal steel beam is welded in steel pipe pile top, longitudinal steel beam is inserted along positioning component and penetrates wall side wall, longitudinal steel beam and horizontal steel beam are welded, avoid the deviation of steel beam installation, effectively improve bearing capacity, when underground pipe gallery is constructed, longitudinal steel beam and horizontal steel beam are gradually unloaded to steel pipe pile, and the protection performance to wall is better, secondly, stability is improved by support component, and positioning combination of horizontal steel beam and longitudinal steel beam is more accurate and stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground space development, in particular to an underground space structure and construction method for passing through the foundation of an existing building. BACKGROUND

[0002] The development of in-situ underground space of an existing building needs to pass through the foundation of the original building, and the reinforcement and underpinning of the original foundation are particularly prominent, which leads to extremely complex construction of foundation reinforcement, underpinning and foundation pit enclosure. Therefore, the underground space development technology for passing through the foundation of an existing building is researched to meet the construction conditions of the enclosure structure of the connecting part of the underground space, reduce the disturbance of the foundation after underpinning, and solve the safety problem of the upper retained building caused by excessive deformation of the original foundation.

[0003] The patent document with the publication number CN103912134A in the prior art provides: an in-situ underground space structure and construction method for an existing building, which includes a top beam plate, a middle floor beam plate, a bottom plate, underpinning piles and an enclosure wall. A new foundation structure formed by the top beam plate and the underpinning piles of the underground space is used to integrally underpin the original foundation structure of the existing building, i.e. to convert the load-bearing system (i.e. the foundation structure) of the original building to the new foundation structure after reinforcement and underpinning, so that all loads of the existing building are borne by the foundation system after reinforcement and underpinning. Then, the original site is excavated and the construction of underground works is carried out, and finally the development of in-situ underground space of the existing building is realized. In this way, not only the problem of insufficient space of the existing building is solved, but also the building is developed for the second time, so that the preservation of architectural culture and the synchronous improvement of structural function are realized, the original structural function and the new use space are organically integrated, the needs of people of different generations are met, and the existing building becomes a highlight of the city again.

[0004] Although the device has many beneficial effects, it still has the following problems: during use of the device, the beam plate integrally underpins the existing building, which easily causes disturbance to the old wall body, the protection performance is not good enough, and the installation of the beam plate is easy to deviate, which leads to reduction of bearing capacity; secondly, the positioning of the beam plate is not accurate and stable enough during use of the device, and the old wall body is easy to overturn and collapse, which needs to be improved. In view of this, we propose an underground space structure and construction method for passing through the foundation of an existing building. SUMMARY

[0005] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification of the present application to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0006] 1. Technical problems to be solved:

[0007] In order to solve the problems of the above-mentioned middle beam plate overall underpinning existing buildings, easy to cause disturbance to the old wall, the protection performance is not good enough, the beam plate installation is easy to deviate, leading to the reduction of bearing capacity, and the positioning of the beam plate is not accurate and stable, and the old wall is easy to collapse, the present application is provided.

[0008] Therefore, the purpose of the present application is to provide a kind of underground space structure and construction method of underpassing existing building foundation, adopt combination support old wall with horizontal steel beam and longitudinal steel beam, gradually unloading, improve protection performance, avoid the deviation of steel beam installation, improve bearing capacity, the positioning of steel beam combination is more accurate and stable, avoid old wall collapse.

[0009] 2. Technical scheme:

[0010] In order to solve the above-mentioned technical problems, according to one aspect of the present application, the present application provides the following technical scheme:

[0011] A kind of underground space structure of underpassing existing building foundation, it includes wall, the wall both sides are equipped with multiple steel pipe piles, the top of the steel pipe pile is equipped with horizontal steel beam, the top of the horizontal steel beam is equipped with multiple positioning components, the positioning component includes two positioning frames, the inner cavity side wall top of the positioning frame is rotatably connected with lead screw, the lead screw is connected with handle at one end of the positioning frame side wall and penetrates, the outer wall of the lead screw is rotatably connected with sliding block at both ends, the bottom of the sliding block is equipped with moving plate, the side wall of the moving plate is equipped with multiple through slots, the bottom of the through slot is rotatably connected with roller, the side wall of the positioning frame is equipped with positioning plate, the top of the positioning frame is equipped with screw hole, the top of the horizontal steel beam is equipped with multiple longitudinal steel beams, the top of the steel pipe pile is equipped with support component, the top of the longitudinal steel beam is equipped with multiple angle steels located at the bottom of wall pipe gallery. Longitudinal steel beam avoids the column of wall, avoids damaging the bearing capacity of wall, prevents wall from overturning.

[0012] As a preferred scheme of the underground space structure of underpassing existing building foundation of the present application, wherein the support component includes fixed block, the side wall of the fixed block is equipped with accommodating groove, the side wall of the accommodating groove is equipped with spring, the other end of the spring is equipped with support block, the bottom of the horizontal steel beam is equipped with multiple installation grooves. Through the combination of installation groove and fixed block, the horizontal steel beam is conveniently positioned, and the installation is prevented from being skewed.

[0013] As a preferred scheme of the underground space structure of underpassing existing building foundation of the present application, wherein the inner cavity top of the positioning frame is equipped with two limit plates, the size and position of the limit plate are matched with the size and position of the sliding block. The limit plate abuts against the top of the horizontal steel beam under the action of gravity, and the contact between the lead screw and the top of the horizontal steel beam is avoided to affect the rotation.

[0014] As a preferred scheme of the underground space structure of the application, the thread direction of the two ends of the screw rod is opposite, and the rotating handle circumferential outer wall is provided with a plurality of stripe protrusions.

[0015] As a preferred scheme of the underground space structure of the application, the diameter of the roller is greater than the thickness of the moving plate, and the size of the positioning plate is greater than the size of the positioning frame.

[0016] As a preferred scheme of the underground space structure of the application, the top of the support block is inclined away from the side of the spring, and the size of the support block matches the size of the accommodating groove.

[0017] As a preferred scheme of the underground space structure of the application, the wall side wall is provided with a hole, and the longitudinal steel beam penetrates through the hole of the wall side wall.

[0018] A construction method of an underground space structure of the application, comprising the following steps:

[0019] Step 1, measure the size of the wall, prepare each component according to the requirements, and cooperate with the drilling equipment to drill the wall, the number of holes is 4-6 per ten meters on both sides of the pipe gallery.

[0020] Step 2, install the steel pipe pile in the foundation on both sides of the wall, the number of steel pipe piles is 2-4 per group, and a group of steel pipe piles is arranged on both sides of the wall at the two sides of the pipe gallery, and two horizontal steel beams are welded on the top of the steel pipe piles on both sides of the wall.

[0021] Step 3, place a plurality of positioning assemblies on the top of the horizontal steel beam, move the positioning assembly to the position corresponding to the wall hole, insert the longitudinal steel beam into the wall hole along the positioning assembly, and set a group of longitudinal steel beams at the positions where the two sides of the pipe gallery bottom contact the longitudinal steel beam and the middle position not contacted, the number of longitudinal steel beams in each group is 2-4, and the longitudinal steel beam and the horizontal steel beam are welded.

[0022] Step 4, the number of angle steels is 2-4 per group, each group of angle steels is inserted into the gap between the longitudinal steel beam and the longitudinal steel beam at the bottom of the wall pipe gallery, and the longitudinal steel beam and the angle steel are welded.

[0023] 3. Beneficial effects:

[0024] Compared with the prior art, the application has the beneficial effects that:

[0025] The underground space structure and construction method of underpassing existing building foundation, the steel pipe pile is fixed on the foundation, the horizontal steel beam is welded on the top of the steel pipe pile, the two positioning frames are placed on the top of the horizontal steel beam, the hand wheel is rotated to drive the lead screw to rotate, so that the two sliding blocks drive the two moving plates to move inward, and then the rollers abut against the side wall of the horizontal steel beam, the positioning frame is moved to the required position, the bolt is screwed into the screw hole to connect the positioning frame and the horizontal steel beam, the vertical steel beam is inserted through the side wall of the wall between the two positioning plates, the vertical steel beam and the horizontal steel beam are welded, the offset of the steel beam installation is avoided, the bearing capacity is effectively improved, and the protection performance of the wall is better when the underground pipe gallery is constructed.

[0026] The underground space structure and construction method of underpassing existing building foundation, the horizontal steel beam is placed on the top of the steel pipe pile, the fixing block is inserted into the installation slot, the two supporting blocks are extruded to move inward, the supporting blocks are driven to move outward by the rebound force of the spring to abut against the side wall of the inner cavity of the horizontal steel beam, the horizontal steel beam is welded to improve the stability, and the positioning combination of the horizontal steel beam and the vertical steel beam is more accurate and stable. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the present application will be described in detail below in combination with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0028] Figure 1 It is a whole structure schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0029] Figure 2 It is a partial structure schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0030] Figure 3 It is a positioning assembly structure schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0031] Figure 4 It is a lead screw moving plate structure schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0032] Figure 5 It is a positioning frame structure section schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0033] Figure 6 It is a steel pipe pile horizontal steel beam structure split schematic diagram of the underground space structure and construction method of underpassing existing building foundation of the present application;

[0034] Figure 7 It is a support assembly structure section view schematic diagram of the underground space structure and construction method of the application which underpasses the existing building foundation;

[0035] Figure 8 It is a construction flow chart of the underground space structure and construction method of the application which underpasses the existing building foundation;

[0036] Figure 9 It is a positioning assembly installation flow chart of the underground space structure and construction method of the application which underpasses the existing building foundation.

[0037] The figure label explanation: 1, wall; 2, steel pipe pile; 3, horizontal steel beam; 4, positioning assembly; 5, vertical steel beam; 6, support assembly; 7, angle steel; 401, positioning frame; 402, lead screw; 403, handle; 404, sliding block; 405, moving plate; 406, through slot; 407, roller; 408, positioning plate; 409, screw hole; 410, limiting plate; 601, fixed block; 602, accommodating groove; 603, spring; 604, support block; 605, installation groove. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] The present application is described in detail in combination with the schematic diagram. In the detailed description of the embodiments of the present application, the sectional view of the device structure will be partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0040] The orientation or positional relationship indicated in the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The connection mode in the term should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0042] The embodiments of the present application will be further described in detail below in combination with the drawings.

[0043] The present application provides a kind of underground space structure and construction method of underpassing existing building foundation, the overall structure schematic diagram of an embodiment, comprising:

[0044] Please refer to Figures 1-9 , a kind of underground space structure and construction method of underpassing existing building foundation of the present embodiment, including wall 1, wall 1 both sides are equipped with multiple steel pipe piles 2 fixed in foundation, the top of steel pipe pile 2 is clamped with cross steel beam 3, the top of cross steel beam 3 is slidably connected with multiple positioning assemblies 4, positioning assembly 4 includes two positioning frames 401, the top of the inner cavity side wall of positioning frame 401 is rotatably connected with lead screw 402, the one end of the side wall of positioning frame 401 is fixed with handwheel 403, the outer wall of lead screw 402 is threadedly connected with sliding block 404 at both ends, the bottom of two sliding blocks 404 is fixed with moving plate 405, the side wall of moving plate 405 is provided with multiple through slots 406, the bottom of multiple through slots 406 is rotatably connected with gyro wheel 407, the side wall of positioning frame 401 is welded with positioning plate 408, the top of positioning frame 401 is provided with screw hole 409, the top of cross steel beam 3 is welded with multiple longitudinal steel beams 5, the top of steel pipe pile 2 is welded with support assembly 6, the top of longitudinal steel beam 5 is welded with multiple angle steels 7 located at the bottom of wall 1 pipe gallery, steel pipe pile 2 is fixed on foundation, cross steel beam 3 is welded on the top of steel pipe pile 2, two positioning frames 401 are placed on the top of cross steel beam 3, rotating handwheel 403 drives lead screw 402 to rotate, so that two sliding blocks 404 drive two moving plates 405 to move inward, in turn, gyro wheel 407 abuts the side wall of cross steel beam 3, positioning frame 401 is moved to the required position, the bolt is screwed into screw hole 409 to connect positioning frame 401 and cross steel beam 3, longitudinal steel beam 5 is inserted between two positioning plates 408 and penetrates the side wall of wall 1, longitudinal steel beam 5 and cross steel beam 3 are welded, to avoid the installation of steel beam to deviate, effectively improve the bearing capacity, when underground pipe gallery is constructed, longitudinal steel beam 5 and cross steel beam 3 are gradually unloaded to steel pipe pile 2, and the protection performance for wall 1 is better.

[0045] It is worth mentioning that, in order to avoid old wall body to overturn and collapse, specifically, support assembly 6 includes fixed block 601, the side wall of both sides of fixed block 601 is provided with accommodating groove 602, the side wall of both accommodating grooves 602 is fixedly provided with spring 603, the other end of two springs 603 is fixedly provided with support block 604, the bottom of cross steel beam 3 is provided with multiple mounting grooves 605, by placing cross steel beam 3 on the top of steel pipe pile 2, fixed block 601 is inserted into mounting groove 605, two support blocks 604 are extruded and move inward, support block 604 is driven to move outward by the resilience of spring 603 and abuts the inner cavity side wall of cross steel beam 3, cross steel beam 3 is welded, the stability is improved, and the positioning combination of cross steel beam 3 and longitudinal steel beam 5 is more accurate and stable.

[0046] Next, in order to avoid the screw rod 402 rotating with the screw rod 402, specifically, the inner cavity of the positioning frame 401 is provided with two limiting plates 410 at the top, the size and position of the two limiting plates 410 match the size and position of the sliding block 404, and the two limiting plates 410 matched with the size and position of the sliding block 404 are used to limit the sliding block 404 and avoid the sliding block 404 rotating with the screw rod 402.

[0047] At the same time, in order to make it more convenient for the staff to rotate the rotating handle 403, specifically, the threads on the two ends of the circumferential outer wall of the screw rod 402 are in opposite directions, and a plurality of striped protrusions are fixedly arranged on the circumferential outer wall of the rotating handle 403, through the oppositely arranged threads, the two sliding blocks 404 can be moved inward or outward at the same time when the screw rod 402 rotates, and through the striped protrusions, the friction force can be increased, which is convenient for the staff to use.

[0048] Further, in order to prevent the positioning frame 401 from being blocked, specifically, the diameter of the roller 407 is greater than the thickness of the moving plate 405, and the size of the positioning plate 408 is greater than the size of the positioning frame 401, through the roller 407 with a diameter greater than the thickness of the moving plate 405, the moving plate 405 is prevented from being in contact and friction with the longitudinal steel beam 5, thereby affecting the movement of the positioning frame 401.

[0049] It is worth noting that in order to facilitate the movement of the supporting block 604 under extrusion, specifically, the supporting block 604 is inclinedly arranged at the top away from one side of the spring 603, and the size of the supporting block 604 matches the size of the accommodating groove 602, through the supporting block 604 arranged at the top, when the fixed block 601 is inserted into the inside of the installation groove 605, the supporting block 604 can be extruded to move to the inside of the accommodating groove 602.

[0050] Finally, in order to facilitate the support of the wall body 1, specifically, the side wall of the wall body 1 is provided with a hole, and the longitudinal steel beam 5 penetrates through the hole of the side wall of the wall body 1, through the hole of the side wall of the wall body 1, the longitudinal steel beam 5 is facilitated to pass through for convenient support.

[0051] A construction method of an underground space structure underpassing an existing building foundation, comprising the following steps:

[0052] Step 1, measure the size of the wall body 1, prepare each component according to the demand, and cooperate with the drilling equipment to drill holes in the wall body, the number of holes is 4-6 holes per ten meters on both sides of the pipe gallery.

[0053] Step 2, install the steel pipe pile 2 in the foundation on both sides of the wall body 1, the number of steel pipe piles 2 is 2-4 per group, and a group of steel pipe piles 2 is arranged on both sides of the wall body 1 at the two sides of the pipe gallery, and two horizontal steel beams 3 are respectively welded on the top of the steel pipe piles 2 on both sides of the wall body 1.

[0054] Step 3: Place multiple positioning components 4 on top of the horizontal steel beam 3, move the positioning components 4 to the position corresponding to the hole drilled in the wall, insert the longitudinal steel beam 5 into the hole in the wall along the positioning components 4, and set a set of longitudinal steel beam 5 at the bottom of the pipe gallery of the wall 1 where it contacts the longitudinal steel beam 5 on both sides and at the middle where it does not contact the longitudinal steel beam 5. The number of longitudinal steel beams 5 in each set is 2 to 4. Weld the longitudinal steel beam 5 to the horizontal steel beam 3.

[0055] Step 4: The number of angle steel 7 is divided into groups of 2 to 4. Each group of angle steel 7 is inserted into the gaps between the bottom of the pipe gallery of wall 1 and the longitudinal steel beam 5, and the longitudinal steel beam 5 and the angle steel 7 are welded together.

[0056] Example 1

[0057] An underground space structure and construction method for penetrating the foundation of an existing building includes a wall 1. Multiple steel pipe piles 2, fixed in the foundation, are installed on both sides of the wall 1. A horizontal steel beam 3 is snapped onto the top of each steel pipe pile 2. Multiple positioning components 4 are slidably connected to the top of the horizontal steel beam 3. Each positioning component 4 includes two positioning frames 401. A lead screw 402 is rotatably connected to the top of the inner side wall of each positioning frame 401. A handle 403 is fixed to one end of the lead screw 402, which passes through the side wall of the positioning frame 401. Slider blocks 404 are threaded to both ends of the outer circumference of the lead screw 402. Moving plates 405 are fixed to the bottom of each slider 404. Multiple through slots 406 are formed on the side wall of each moving plate 405. Rollers 407 are rotatably connected to the bottom of each through slot 406. A positioning plate 408 is welded to the side wall of the positioning frame 401. A screw hole 409 is formed at the top of the positioning frame 401. Multiple longitudinal steel beams 5 are welded to the top of the horizontal steel beam 3. A support component 6 is welded to the top center of the steel pipe pile 2. Multiple angle steels 7 located at the bottom of the pipe gallery in the wall 1 are welded to the top of the longitudinal steel beam 5. The steel pipe pile 2 is fixed to the foundation. The transverse steel beam 3 is welded to the top of the steel pipe pile 2. Two positioning frames 401 are placed on the top of the transverse steel beam 3. The turner 403 drives the screw 402 to rotate, thereby causing the two sliders 404 to drive the two moving plates 405 to move inward. Then, the rollers 407 abut against the side wall of the transverse steel beam 3, pushing the positioning frames 401 to the required position. The bolts are screwed into the bolt holes 409 to connect the positioning frames 401 and the transverse steel beam 3. The longitudinal steel beam 5 is inserted between the two positioning plates 408 and penetrates the side wall of the wall 1. The longitudinal steel beam 5 and the transverse steel beam 3 are welded to avoid the steel beams from shifting during installation, effectively improving the load-bearing capacity. During the construction of the underground pipe gallery, the longitudinal steel beam 5 and the transverse steel beam 3 gradually unload the force to the steel pipe pile 2, providing better protection for the wall 1.

[0058] It is worth mentioning that in order to avoid the collapse of the old wall body, specifically, the support assembly 6 comprises a fixed block 601, both sides of the fixed block 601 are provided with a containing groove 602, both sides of the containing groove 602 are fixedly provided with a spring 603, both ends of the spring 603 are fixedly provided with a support block 604, a plurality of mounting grooves 605 are formed in the bottom of the horizontal steel beam 3, the horizontal steel beam 3 is placed on the top of the steel pipe pile 2, the fixed block 601 is inserted into the mounting groove 605, the two support blocks 604 are moved inwards under pressure, the support block 604 is driven to move outward by the resilience of the spring 603 and abuts against the inner cavity side wall of the horizontal steel beam 3, the horizontal steel beam 3 is welded to improve stability, and the positioning combination of the horizontal steel beam 3 and the vertical steel beam 5 is more accurate and stable.

[0059] Then, in order to avoid the rotation of the screw rod 402 with the rotation of the screw rod 402, specifically, two limiting plates 410 are fixedly arranged at the top of the inner cavity of the positioning frame 401, the size and position of the two limiting plates 410 are matched with the size and position of the sliding block 404, the two limiting plates 410 matched with the size and position of the sliding block 404 are used to limit the sliding block 404 and avoid the rotation of the sliding block 404 with the rotation of the screw rod 402.

[0060] At the same time, in order to make it more convenient for the staff to rotate the rotating handle 403, specifically, the thread directions of the two ends of the circumferential outer wall of the screw rod 402 are opposite, a plurality of striped protrusions are fixedly arranged on the circumferential outer wall of the rotating handle 403, the opposite thread directions are used to make the two sliding blocks 404 move inward or outward at the same time when the screw rod 402 rotates, and the striped protrusions are used to increase the friction and facilitate the use of the staff.

[0061] Further, in order to prevent the positioning frame 401 from being blocked, specifically, the diameter of the roller 407 is greater than the thickness of the moving plate 405, and the size of the positioning plate 408 is greater than the size of the positioning frame 401, the roller 407 with the diameter greater than the thickness of the moving plate 405 is used to avoid the contact and friction between the moving plate 405 and the vertical steel beam 5, and affect the movement of the positioning frame 401.

[0062] It is worth noting that in order to facilitate the movement of the support block 604 under pressure, specifically, the top of the support block 604 away from the spring 603 is inclined, and the size of the support block 604 is matched with the size of the containing groove 602, the support block 604 arranged at the top is inclined, which is convenient for the support block 604 to move into the containing groove 602 under pressure when the fixed block 601 is inserted into the mounting groove 605.

[0063] Finally, in order to facilitate the support of the wall body 1, specifically, the side wall of the wall body 1 is provided with a hole, and the vertical steel beam 5 penetrates through the hole of the side wall of the wall body 1, the hole of the side wall of the wall body 1 is used to facilitate the penetration of the vertical steel beam 5 for convenient support.

[0064] A construction method of an underground space structure underpassing an existing building foundation, comprising the following steps:

[0065] Step 1, measure the size of the wall 1, prepare each component according to the requirements, and cooperate with the drilling equipment to drill the wall, the number of holes is 4 per 10 meters on both sides of the pipe gallery.

[0066] Step 2, install the steel pipe pile 2 in the foundation on both sides of the wall 1, the number of steel pipe piles 2 is 2 per group, and one group of steel pipe piles 2 is arranged on both sides of the wall 1 at the two sides of the pipe gallery, and two horizontal steel beams 3 are respectively welded on the top of the steel pipe piles 2 on both sides of the wall 1.

[0067] Step 3, place a plurality of positioning assemblies 4 on the top of the horizontal steel beam 3, move the positioning assembly 4 to the position corresponding to the wall drilling hole, insert the vertical steel beam 5 into the wall hole along the positioning assembly 4, and set a group of vertical steel beams 5 at the position where the two sides of the pipe gallery bottom of the wall 1 contact the vertical steel beam 5 and the middle position not contacted, and the number of vertical steel beams 5 in each group is 3, and the vertical steel beam 5 and the horizontal steel beam 3 are welded.

[0068] Step 4, the number of angle steels 7 is 2 per group, each group of angle steels 7 is inserted into the gap between the vertical steel beam 5 and the pipe gallery bottom of the wall 1, and the vertical steel beam 5 and the angle steel 7 are welded.

[0069] In combination Figures 1-9 , the underground space structure underpassing an existing building foundation and the construction method of the embodiment are used as follows during the specific use process:

[0070] 1: When the device is needed to underpass the underground space structure of the existing building foundation and the construction method is used, the steel pipe pile 2 is fixed on the foundation, the horizontal steel beam 3 is welded on the top of the steel pipe pile 2, the two positioning frames 401 are placed on the top of the horizontal steel beam 3, the hand wheel 403 is rotated to drive the two sliding blocks 404 to move inward, so that the two moving plates 405 move inward to drive the rollers 407 to abut against the side wall of the horizontal steel beam 3, the positioning frame 401 is moved to the required position, the bolt is screwed into the screw hole 409 to connect the positioning frame 401 and the horizontal steel beam 3, the vertical steel beam 5 is inserted between the two positioning plates 408 to penetrate the side wall of the wall 1, and the vertical steel beam 5 and the horizontal steel beam 3 are welded, and the angle steel 7 is inserted into the bottom of the pipe gallery of the wall 1 and welded with the top of the vertical steel beam 5;

[0071] 2: Place the horizontal steel beam 3 on the top of the steel pipe pile 2, insert the fixing block 601 into the installation slot 605, extrude the two supporting blocks 604 to move inward, the elastic force of the spring 603 drives the supporting block 604 to move outward to abut against the side wall of the inner cavity of the horizontal steel beam 3, and the horizontal steel beam 3 and the steel pipe pile 2 are welded.

[0072] Although the present application has been described with reference to the embodiments above, various changes and modifications can be suggested to one skilled in the art, and it is intended that the present application encompass such changes and modifications as fall within the scope of the appended claims. Particularly, each feature disclosed in the description and / or the claims can be used in the combination with each of the features disclosed in the description and / or the claims, unless specifically stated otherwise. Therefore, the present application is not intended to be limited to the particular embodiments disclosed in the description and / or the claims.

Claims

1. An underground space structure that passes under the foundation of an existing building, characterized in that, The wall (1) includes a wall structure (1), on both sides of which are provided multiple steel pipe piles (2). A horizontal steel beam (3) is provided on the top of the steel pipe piles (2). A multiple positioning assembly (4) is provided on the top of the horizontal steel beam (3). The positioning assembly (4) includes two positioning frames (401). A lead screw (402) is rotatably connected to the top of the inner cavity side wall of the positioning frame (401). A handle (403) is provided at one end of the lead screw (402) that passes through the side wall of the positioning frame (401). Slider blocks (404) are threaded to both ends of the outer circumference of the lead screw (402). The two sliders (404) are connected to each other. 04) Each bottom is provided with a movable plate (405), the side wall of the movable plate (405) is provided with multiple through slots (406), the bottom of each through slot (406) is rotatably connected with a roller (407), the side wall of the positioning frame (401) is provided with a positioning plate (408), the top of the positioning frame (401) is provided with a screw hole (409), the top of the horizontal steel beam (3) is provided with multiple longitudinal steel beams (5), the top of the steel pipe pile (2) is provided with a support component (6), the top of the longitudinal steel beam (5) is provided with multiple angle steels (7) located at the bottom of the pipe gallery of the wall (1).

2. The underground space structure passing under the foundation of an existing building as described in claim 1, characterized in that, The support component (6) includes a fixing block (601), and the fixing block (601) has a receiving groove (602) on both sides of its sidewalls. The two receiving grooves (602) are provided with springs (603) on their sidewalls. The two springs (603) are provided with a support block (604) at their other ends. The bottom of the horizontal steel beam (3) has multiple mounting grooves (605).

3. The underground space structure passing under the foundation of an existing building as described in claim 2, characterized in that, The top of the inner cavity of the positioning frame (401) is provided with two limiting plates (410), and the size and position of the two limiting plates (410) match the size and position of the slider (404).

4. The underground space structure passing under the foundation of an existing building as described in claim 3, characterized in that, The threads at both ends of the outer circumference of the lead screw (402) are in opposite directions, and the outer circumference of the rotary handle (403) is provided with multiple striped protrusions.

5. The underground space structure passing under the foundation of an existing building according to claim 4, characterized in that, The diameter of the roller (407) is greater than the thickness of the moving plate (405), and the size of the positioning plate (408) is greater than the size of the positioning frame (401).

6. The underground space structure passing under the foundation of an existing building according to claim 5, characterized in that, The support block (604) is inclined on the side away from the spring (603) at the top, and the size of the support block (604) matches the size of the receiving groove (602).

7. The underground space structure passing under the foundation of an existing building as described in claim 6, characterized in that, The wall (1) has a hole in its side wall, and the longitudinal steel beam (5) passes through the hole in the side wall of the wall (1).

8. A construction method for an underground space structure that passes under the foundation of an existing building, characterized in that, Installing the underground space structure passing under the foundation of an existing building as described in any one of claims 1 to 7 includes the following steps: Step 1: Measure the dimensions of the wall (1), prepare each component according to the requirements, and drill holes in the wall with drilling equipment. The number of holes is 4 to 6 per 10 meters on both sides of the pipe gallery. Step 2: Install steel pipe piles (2) in the foundation on both sides of the wall (1). The number of steel pipe piles (2) is 2 to 4 per group. Set up a group of steel pipe piles (2) on each side of the pipe gallery on both sides of the wall (1). Weld two horizontal steel beams (3) to the top of the steel pipe piles (2) on both sides of the wall (1). Step 3: Place multiple positioning components (4) on top of the horizontal steel beam (3), move the positioning components (4) to the position corresponding to the wall drilling hole, insert the longitudinal steel beam (5) along the positioning components (4) into the wall hole, set a set of longitudinal steel beams (5) at the bottom of the wall (1) where they contact the longitudinal steel beams (5) on both sides and at the middle where they do not contact, each set of longitudinal steel beams (5) has 2 to 4 beams, and weld the longitudinal steel beams (5) to the horizontal steel beam (3); Step 4: The number of angle steel (7) is 2 to 4 in a group. Each group of angle steel (7) is inserted into the gap between the bottom of the wall (1) pipe gallery and the longitudinal steel beam (5). The longitudinal steel beam (5) and the angle steel (7) are then welded together.

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