A waterproof structure for connecting the foundations of new and old buildings and a construction method thereof

Abstract

The present invention discloses a waterproof structure and a construction method for the connection between the foundations of new and old buildings, and mainly relates to the field of building foundation construction. It includes a waterproof layer, an embedded groove is provided on the side of the original foundation, the waterproof layer is arranged between the new foundation and the side wall of the embedded groove, a plurality of repeated grouting pipes are provided at the bottom of the embedded groove, a grouting conduit is connected to the repeated grouting pipe, a plurality of transverse steel bars are provided on the side of the embedded groove, a vertical support rod and an oblique support rod are provided on the transverse steel bars, a connecting plate is provided between adjacent vertical support rods, a plurality of fasteners are provided at the bottom of the connecting plate, a support plate is provided on the connecting plate, a fixing bolt is provided on the supporting plate, and a humidity sensor is provided on the fixing bolt. The beneficial effect of the present invention is that it can solve the technical problem of poor waterproof effect at the connection between the foundations of new and old buildings, reduce the probability of water seepage at the connection, reduce the harm caused by water seepage, and improve the waterproof effect at the connection between the foundations of new and old buildings.

Description

Technical Field

[0001] The invention relates to the field of building foundation construction, in particular to a waterproof structure used for the connection between new and old building foundations and a construction method thereof. Background Art

[0002] When a new structure is added near the foundation of an existing building, the connection between the new and old building foundations needs to be sealed and waterproofed. However, due to the large difference in construction time between the concrete structures of the new and old foundations, water seepage is more likely to occur at the connection, resulting in the waterproof structure used in traditional foundation construction being difficult to ensure the waterproof effect of the connection when applied. Once water seepage occurs, it can only be remedied by sealing the connection with grouting repairs. It is difficult to effectively clean up the groundwater that has already seeped out, which has a great impact on the subsequent construction above the foundation and the user experience of related personnel. Therefore, when constructing the foundation of a new structure, how to effectively waterproof the connection between the new and old building foundations is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a waterproof structure for the connection between the foundations of new and old buildings and a construction method thereof, which can solve the technical problem of poor waterproof effect at the connection between the foundations of new and old buildings, achieve early warning and effective remedy for water seepage at the connection, perform effective drainage operations on the location where water has already seeped, reduce the probability of water seepage at the connection, reduce the harm caused by water seepage, and improve the waterproof effect of the connection between the foundations of new and old buildings.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A waterproof structure for the connection between the foundations of new and old buildings, comprising a waterproof layer arranged between a newly built foundation and an original foundation, an embedding groove is arranged on the side of the original foundation, one end of the newly built foundation extends into the embedding groove, the waterproof layer is arranged between the newly built foundation and the side wall of the embedding groove, a plurality of repeated grouting pipes are arranged at the bottom of the embedded groove, a grouting conduit is connected to the repeated grouting pipe, the grouting conduit extends to the top of the newly built foundation, a plurality of transverse steel bars extending to the inside of the newly built foundation are arranged on the side of the embedded groove, vertical support rods and oblique support rods are arranged on the transverse steel bars, a connecting plate is arranged between adjacent vertical support rods, a plurality of fasteners are arranged at the bottom of the connecting plate, and the fasteners are sleeved on the repeated grouting pipes. The outer side of the grouting pipe is connected to the bottom of the embedded groove, and a support plate is provided on the connecting plate, and the support plate extends to the side of the embedded groove. A fixing bolt is provided on the end of the support plate that contacts the side of the embedded groove, and the fixing bolt is fixed on the side wall of the embedded groove. A humidity sensor used in conjunction with the repetitive grouting pipe is provided on the fixing bolt, and a receiving groove is provided on the oblique support rod. The grouting conduit is arranged in the receiving groove, and a water absorption groove is provided on the top of the embedded groove, and a water absorption layer is provided in the water absorption groove, and a power component for squeezing the water absorption layer is provided in the water absorption groove. A water collecting groove is provided on the top of the newly built foundation that contacts the original foundation, and a drainage pipe is provided at the bottom of the water absorption groove, and the top of the drainage pipe extends into the water collecting groove.

[0006] Furthermore, the longitudinal section of the support plate is an inverted L-shape, the vertical portion of the inverted L-shape is in contact with the side of the embedding groove, and the fixing bolt is arranged on the vertical portion of the inverted L-shape.

[0007] Furthermore, one end of the fixing bolt is in a pointed cone shape, the end of the pointed cone extends into the side wall of the embedding groove, and the other end of the fixing bolt is provided with a stopper, which contacts the vertical portion of the inverted L-shape of the support plate.

[0008] Furthermore, the block is provided with a groove, the humidity sensor is arranged in the groove, and a mesh plate for closing the groove is provided at the end of the groove.

[0009] Furthermore, a mounting opening is provided at one end of the receiving groove, and the grouting conduit enters the receiving groove after passing through the mounting opening, and a buckle plate is slidably connected to the mounting opening.

[0010] Furthermore, the water-absorbing layer is a water-absorbing sponge, the top of the water-absorbing sponge contacts the top of the embedding groove, the bottom of the water-absorbing sponge is provided with a bearing plate, the bearing plate is provided with a water leakage hole, and the power component contacts the bearing plate.

[0011] Furthermore, a plurality of vertical guide columns are provided in the water absorption trough, and the guide columns penetrate the supporting plate and are slidably connected thereto. The power assembly includes a rotating shaft, and a plurality of protrusions are provided on the side of the rotating shaft. When the rotating shaft rotates, the protrusions contact the supporting plate.

[0012] Furthermore, a roller is rotatably connected to the protrusion, and when the shaft rotates, the roller rolls in contact with the bearing plate. The bottom of the water absorption trough is a cone that is wide at the top and narrow at the bottom, and the drainage pipe is connected to the bottom of the cone.

[0013] Furthermore, a plurality of expansion water stop strips are provided between the newly-built foundation and the side wall of the embedded groove.

[0014] A construction method for a waterproof structure at a connection point between a new and an old building foundation, comprising the following steps:

[0015] S1. Dig an embedding groove on the side of the original foundation, clean the side wall of the embedding groove and apply a waterproof layer;

[0016] S2. burying a plurality of transverse steel bars on the side of the embedded groove, the transverse steel bars extending to the area of ​​the newly built foundation, and then placing a plurality of repeated grouting pipes with grouting conduits at the bottom of the embedded groove;

[0017] S3. Install vertical support rods and oblique support rods on the transverse reinforcement, and place the grouting conduit into the receiving groove of the oblique support rod so that the top of the grouting conduit can accurately extend to the top of the newly built foundation;

[0018] S4, installing a connecting plate between adjacent vertical support rods, a plurality of fasteners at the bottom of the connecting plate are sleeved on the outside of the repeated grouting pipe, and then the fasteners are installed at the bottom of the embedded groove to fix the repeated grouting pipe. After the connecting plate is installed, the supporting plate on it contacts the side of the embedded groove, and then the fixing bolt with the humidity sensor is installed on the side of the embedded groove, so that the humidity sensor is installed at the connection between the new foundation and the original foundation;

[0019] S5. Install a water absorption trough on the top of the embedded trough, a water absorption layer and a power component for squeezing the water absorption layer are arranged in the water absorption trough, and a drainage pipe extending to the top of the newly built foundation is arranged at the bottom of the water absorption trough;

[0020] S6. Cast the newly built foundation so that one end of it extends into the embedded groove. A water collection tank is reserved on the newly built foundation near the top of the original foundation, and the top of the drainage pipe extends into the water collection tank.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The present invention arranges an embedded groove on the side of the original foundation, one end of the newly built foundation extends into the embedded groove, and a waterproof layer is arranged on the side wall where the newly built foundation and the embedded groove are in contact, so as to avoid water seepage in the building foundation, and a plurality of repeated grouting pipes are arranged at the bottom of the embedded groove, and a grouting conduit is arranged on the repeated grouting pipe, and the grouting conduit extends to the top of the newly built foundation. In such a structure, after the foundation construction is completed or in the case of subsequent water seepage, grouting can be performed from the grouting conduit, so that the slurry diffuses along the repeated grouting pipe to the connection between the newly built foundation and the original foundation, and the connection is blocked after the slurry solidifies, thereby avoiding possible water seepage, preventing the harm and loss caused by continuous water seepage, and ensuring the waterproof effect of the connection between the new and old building foundations;

[0023] 2. A plurality of transverse steel bars extending to the inside of the newly built foundation are arranged on the side of the embedded groove, vertical support rods and oblique support rods are arranged on the transverse steel bars, connecting plates are arranged between adjacent vertical support rods, a plurality of fasteners are arranged at the bottom of the connecting plate, the fasteners are sleeved on the outside of the repeated grouting pipe and connected to the bottom of the embedded groove, and a receiving groove is arranged on the oblique support rod, and the grouting conduit is arranged in the receiving groove. Such a structure can use the transverse steel bars as a supporting carrier, fix the repeated grouting pipe by the vertical support rods and the fasteners, and fix the grouting conduit by the oblique support rods, so that during the pouring construction of the newly built foundation, the repeated grouting pipe and the grouting conduit are effectively supported and protected, thereby ensuring that the slurry can be smoothly diffused at the connection during the subsequent grouting repair, and ensuring the effect of subsequent plugging and repair;

[0024] 3. A support plate is provided on the connection plate, and the support plate extends to the side of the embedded groove. A fixing bolt is provided on the side of the support plate in contact with the embedded groove. The fixing bolt is fixed on the side wall of the embedded groove. A humidity sensor used in conjunction with the repeated grouting pipe is provided on the fixing bolt. Such a structure can monitor the water seepage at the connection. Once the humidity data of the humidity sensor is too large, it indicates that water seepage may occur. Therefore, slurry is injected into the repeated grouting pipe through the grouting conduit in advance, and plugging and remediation are performed before water seepage occurs, thereby reducing the severity of subsequent water seepage and reducing the harm and losses that may be caused by water seepage;

[0025] 4. A water absorption trough is provided at the top of the embedded groove, and a water absorption layer and a power component for squeezing the water absorption layer are provided in the water absorption trough. A water collecting trough is provided on the top of the new foundation that contacts the original foundation. Such a structure can use the water collecting trough to collect the seepage that has been generated to prevent the seepage water from spreading everywhere. At the same time, a drainage pipe is provided at the bottom of the water absorption trough, and the top of the drainage pipe extends to the water collecting trough. After grouting repair of the seepage, the bottom of the connection between the new foundation and the original foundation is blocked, and the water in the water collecting trough is cleaned by a water pump and other structures, and then the water absorption layer is squeezed by the power component so that the water absorbed in the water absorption layer is After extrusion, it is discharged into the sump through the drain pipe, and the water remaining in the connection above the grouting repair position is continued to be absorbed by the squeezed water-absorbing layer and continuously discharged through the drain pipe. Such a structure can make the bottom of the connection sealed in time after water seepage has occurred, and the seepage water remaining above the connection is smoothly absorbed and discharged, thereby effectively sealing and draining the water seepage position, greatly reducing the harm caused by water seepage, reducing the impact on subsequent construction above the new foundation, reducing the impact on the user experience of relevant personnel on the original foundation, and ensuring the effect of waterproof remedial treatment of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0027] Attached Figure 2 It is a front view of the present invention.

[0028] Attached Figure 3 This invention is attached Figure 2 Cross-sectional view along the AA direction.

[0029] Attached Figure 4 This invention is attached Figure 3 Cross-sectional view along the BB direction.

[0030] Attached Figure 5 This invention is attached Figure 4 Cross-sectional view along CC direction.

[0031] Attached Figure 6 This invention is attached Figure 5 A partial enlarged view of area D in the middle.

[0032] Attached Figure 7 This invention is attached Figure 4 Cross-sectional view along the EE direction.

[0033] Attached Figure 8 This invention is attached Figure 7 A partial enlarged view of the F area in the middle.

[0034] Attached Fig. 9 This invention is attached Figure 3 Cross-sectional view along the GG direction.

[0035] Attached Fig.10 This invention is attached Fig. 9 A partial enlarged view of the middle H area.

[0036] Numbers shown in the accompanying drawings:

[0037] 1. New foundation; 2. Original foundation; 3. Waterproof layer; 4. Embedded groove; 5. Repeated grouting pipe; 6. Grouting conduit; 7. Horizontal reinforcement; 8. Vertical support rod; 9. Oblique support rod; 10. Connecting plate; 11. Fastener; 12. Support plate; 13. Fixing bolt; 14. Humidity sensor; 15. Receiving groove; 16. Water absorption groove; 17. Water absorption layer; 18. Water collecting trough; 19. Drain pipe; 20. Block; 21. Groove; 22. Mesh plate; 23. Installation port; 24. Buckle plate; 25. Load-bearing plate; 26. Leakage hole; 27. Guide column; 28. Rotating shaft; 29. ​​Bump; 30. Roller; 31. Expansion water stop strip. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0039] Reference Figure 1 and Figure 2The present invention relates to a waterproof structure for the connection between the foundations of new and old buildings. The main structure includes a waterproof layer 3 arranged between a newly built foundation 1 and an original foundation 2. The waterproof layer 3 is coated with any existing waterproof coating. An embedded groove 4 is provided on the side of the original foundation 2. The embedded groove 4 is opened according to the height of the newly built foundation 1. A certain length and height are excavated inwardly on the side of the original foundation 2, and the side wall of the excavated embedded groove 4 is cleaned to make it smoother. One end of the newly built foundation 1 extends into the embedded groove 4. Such a structure can provide targeted protection for the connection between the newly built foundation 1 and the original foundation 2, increase the contact area of ​​the connection, make the connection bend and extend, and block the possible seepage of groundwater to a certain extent. Preferably, the connection between the newly built foundation 1 and the original foundation 2 adopts the self-healing concrete material on the existing market, which reacts when it encounters water, self-repairs and seals the seepage path, and further improves the waterproof effect. The waterproof layer 3 is coated between the newly built foundation 1 and the side wall of the embedded groove 4. Such a structure can prevent groundwater from penetrating from the connection, reduce Groundwater may penetrate into the newly built foundation 1 and the original foundation 2. A plurality of repeated grouting pipes 5 are arranged at the bottom of the embedded groove 4. The repeated grouting pipe 5 adopts the grouting pipe structure that can be repeatedly grouted on the existing market. A plurality of grouting outlets are arranged on the side. A rubber strip is arranged at the grouting outlet. The rubber strip is fixed with a net bag so that when a certain pressure is formed inside the repeated grouting pipe 5, the slurry can squeeze the rubber strip to discharge the slurry, while the concrete in the foundation structure cannot enter the repeated grouting pipe 5 through the grouting outlet, so that multiple grouting can be carried out after the foundation construction is completed. The grouting is used for the second time. The repeated grouting pipe 5 is connected with a grouting conduit 6. The grouting conduit 6 is generally connected at both ends of the repeated grouting pipe 5 through a joint. The grouting conduit 6 extends to the top of the newly built foundation 1. After the construction of the newly built foundation 1 is completed, such a structure can be grouted through the leaked grouting conduit 6, so that the slurry spreads from the repeated grouting pipe 5 to the connection between the newly built foundation 1 and the original foundation 2. After the slurry solidifies, the connection is blocked to reduce the probability of water seepage, and waterproof remedial treatment after water seepage can also be achieved;

[0040] The side of the embedded groove 4 is provided with a plurality of transverse steel bars 7 extending into the interior of the newly built foundation 1. The transverse steel bars 7 are buried in the original foundation 2 before the pouring construction of the newly built foundation 1. After the pouring construction of the newly built foundation 1 is completed, the transverse steel bars 7 are used to connect the newly built foundation 1 and the original foundation 2 to achieve effective support for the connection and reduce the possibility of cracks at the connection. Vertical support rods 8 and oblique support rods 9 are welded or fixed on the transverse steel bars 7 by wire binding. Both are generally made of metal to ensure the support effect and service life. Connecting plates 10 are welded and fixed between adjacent vertical support rods 8. The bottom of the connecting plate 10 is welded Or it is integrally formed and fixed with multiple fasteners 11. After the repeated grouting pipe 5 is placed at the bottom of the embedded groove 4, the vertical support rod 8 and the connecting plate 10 are welded to the transverse steel bar 7. The fastener 11 is sleeved on the outside of the repeated grouting pipe 5 and connected to the bottom of the embedded groove 4. The fastener 11 is generally fixed to the bottom of the embedded groove 4 with bolts. The repeated grouting pipe 5 is fixed with multiple fasteners 11, so that the structure of the repeated grouting pipe 5 is more solid, and the stability of the repeated grouting pipe 5 can be guaranteed when the new foundation 1 is poured and constructed, and the smoothness of the subsequent grouting of the repeated grouting pipe 5 for repair is guaranteed. , a support plate 12 is welded or bolted on the connecting plate 10, and the support plate 12 extends to the side of the embedded groove 4. In this structure, the support plate 12 is indirectly fixed to the transverse steel bar 7 through the connecting plate 10, and the support plate 12 is in contact with the side of the embedded groove 4. The end of the support plate 12 in contact with the side of the embedded groove 4 is provided with a fixing bolt 13, and the fixing bolt 13 is fixed to the side wall of the embedded groove 4. The fixing bolt 13 passes through the support plate 12 and is fixed to the side wall of the embedded groove 4. Such a structure enables the support plate 12 to be firmly fixed to the transverse steel bar 7 and the side wall of the embedded groove 4. The fixing bolt 13 is provided with a matching repeating bolt. The humidity sensor 14 used in the repetitive grouting pipe 5 enables the fixing bolt 13 with the humidity sensor 14 to be firmly arranged at the connection between the newly built foundation 1 and the original foundation 2. The position of the humidity sensor 14 will not be offset during the subsequent concrete pouring, so that the water seepage at the connection can be accurately monitored. Once water seepage occurs, the humidity sensor 14 can transmit the signal to the monitoring computer in time, which is convenient for real-time monitoring of possible water seepage. After water seepage occurs, grouting can be quickly injected into the repetitive grouting pipe 5 to seal the water seepage in advance, reduce the harm and loss that may be caused by water seepage, and improve the timeliness of waterproof remediation;

[0041] The oblique support rod 9 is provided with a receiving groove 15, and the grouting conduit 6 is arranged in the receiving groove 15. Such a structure uses the oblique support rod 9 to position and protect the grouting conduit 6, thereby ensuring the stability of the position of the grouting conduit 6 during the subsequent concrete pouring process, preparing for the subsequent grouting repair, and ensuring the smoothness of the subsequent grouting repair. The top of the embedded groove 4 is provided with a water absorption groove 16, which is made of a plate with a waterproof structure, with an open top, and is fixed to the top of the embedded groove 4 as a whole by anchor bolts. A water absorption layer 17 is provided in the water absorption groove 16. The water absorption layer 17 is a water absorption material that can be deformed, such as a water absorption sponge, which can absorb water and can also use squeezing to discharge the absorbed water. A power component for squeezing the water absorption layer 17 is provided in the water absorption groove 16. The power component is powered by pre-buried wires or buried power batteries to realize remote start control of the power component. The top of the newly built foundation 1 in contact with the original foundation 2 A water collecting trough 18 is provided, and the water collecting trough 18 is located at the top of the connection between the newly built foundation 1 and the original foundation 2. Such a structure can make the groundwater seeping from the connection gather in the water collecting trough 18 to avoid the seepage water from overflowing everywhere, and the seepage groundwater can be quickly extracted by using a water pump or the like. A drainage pipe 19 is provided at the bottom of the water absorption trough 16, and the top of the drainage pipe 19 extends into the water collecting trough 18. After the bottom of the connection is blocked by the repeated grouting pipe 5, the groundwater remaining above the connection can be absorbed by the water absorption layer 17, and the seepage water is squeezed out to the bottom of the water absorption trough 16 by the power component, and the seepage water is discharged in time through the drainage pipe 19 by the water pump. After the water absorption layer 17 is squeezed dry, it absorbs the residual seepage water at the connection again. After repeated times, the seepage water remaining at the connection can be quickly drained, thereby reducing the harm and influence that the seepage water may continue to cause, greatly improving the effect of seepage remediation, and reducing the harm and loss caused by the seepage water.

[0042] Preferably, the longitudinal section of the support plate 12 is an inverted L-shape, and the vertical portion of the inverted L-shape contacts the side of the embedding groove 4. Such a structure increases the contact area between the support plate 12 and the side wall of the embedding groove 4, making the structure of the support plate 12 relative to the side wall of the embedding groove 4 more stable and less prone to tilting or shaking. The fixing bolt 13 is arranged on the vertical portion of the inverted L-shape, and the vertical portion is fixed to the side wall of the embedding groove 4 by using the fixing bolt 13, thereby further improving the structural firmness of the support plate 12.

[0043] Preferably, one end of the fixing bolt 13 is a pointed cone, and the end of the pointed cone extends into the side wall of the embedding groove 4. When fixing the support plate 12, such a structure can use the pointed cone end to quickly penetrate the support plate 12 and the side wall of the embedding groove 4, so that the fixing operation of the fixing bolt 13 on the support plate 12 is smoother and firmer. The other end of the fixing bolt 13 is welded or integrally formed with a stopper 20, and the stopper 20 is in contact with the inverted L-shaped vertical part of the support plate 12. The setting of the stopper 20 can limit the maximum distance that the fixing bolt 13 extends into the side wall of the embedding groove 4, so that the stopper 20 can remain on the side wall of the embedding groove 4, so that after the pouring construction of the new foundation 1, the stopper 20 can be located at the connection between the new foundation 1 and the original foundation 2, and the humidity sensor 14 is arranged at the stopper 20, so as to facilitate accurate monitoring of water seepage at the connection.

[0044] Preferably, refer to Figure 7 and Figure 8 The block 20 is provided with a groove 21, which runs through one end of the block 20. The humidity sensor 14 is arranged in the groove 21. The end of the groove 21 is provided with a mesh plate 22 that closes the groove 21. The mesh holes of the mesh plate 22 only allow water to pass through, so that the concrete casting material is not easy to enter the groove 21. Such a structure enables the block 20 with the humidity sensor 14 to be accurately located at the connection between the newly built foundation 1 and the original foundation 2 after the fixing bolt 13 is installed, and the concrete is not easy to squeeze or damage the humidity sensor 14 during the concrete pouring construction process, and the seeping groundwater can successfully pass through the mesh plate 22 and contact the humidity sensor 14, thereby realizing more accurate monitoring of the groundwater seepage.

[0045] Preferably, refer to Figure 3 , Fig. 9 , Fig.10 One end of the receiving groove 15 is provided with an installation opening 23, and the grouting conduit 6 enters the receiving groove 15 after passing through the installation opening 23. A buckle plate 24 is slidably connected to the installation opening 23. Specifically, a guide rail is provided at the installation opening 23, and a guide groove that is in sliding contact with the guide rail is provided on the buckle plate 24. After the buckle plate 24 is slidably installed at the installation opening 23, the receiving groove 15 is closed. Components such as sealing strips are provided at the installation position, so that concrete is not easy to enter the interior of the receiving groove 15 during subsequent concrete pouring. The oblique support rod 9 is used to effectively support and protect the grouting conduit 6 to prevent the concrete from crushing the grouting conduit 6, thereby ensuring the smooth progress of subsequent grouting.

[0046] Preferably, the water-absorbing layer 17 is a water-absorbing sponge. After absorbing water, the water-absorbing sponge can be squeezed out by squeezing, and after squeezing, it can quickly recover and absorb water again. The top of the water-absorbing sponge contacts the top of the embedded groove 4. Preferably, the water-absorbing sponge can be arranged on the upper and lower sides of the power component to improve the water absorption effect. Such a structure can make the seepage water generated at the connection between the side wall of the embedded groove 4 and the newly built foundation 1 contact with the water-absorbing layer 17 and be quickly absorbed. The bottom of the water-absorbing sponge is provided with a bearing plate 25, and the bearing plate 25 is bonded to the water-absorbing sponge or connected as a whole by a buckle. The bearing plate 25 is provided with a leakage hole 26. The groundwater squeezed out of the water-absorbing sponge passes through the leakage hole 26 and falls on the bottom of the water-absorbing groove 16. The power component contacts the bearing plate 25. Such a structure uses the power component to contact and squeeze the bearing plate 25, so that the whole water-absorbing sponge can be squeezed, so that the water inside the water-absorbing sponge can be quickly squeezed out, thereby improving the discharge efficiency of the groundwater that has seeped out.

[0047] Preferably, refer to Figure 4 , a plurality of vertical guide columns 27 are welded or bolted in the water absorption groove 16, and the guide columns 27 penetrate the bearing plate 25 and are slidably connected thereto. Such a structure enables the power component to drive the bearing plate 25 to slide along the guide columns 27 when squeezing the bearing plate 25, thereby realizing comprehensive squeezing treatment of the water-absorbing sponge. The power component includes a rotating shaft 28, and the rotating shaft 28 is driven to rotate by a motor. A plurality of protrusions 29 are welded or integrally formed and fixed on the side of the rotating shaft 28. When the rotating shaft 28 rotates, the protrusions 29 contact the bearing plate 25. With such a structure, when the rotating shaft 28 rotates, the protrusions 29 intermittently contact the bearing plate 25 and drive it to slide, thereby realizing intermittent squeezing of the water-absorbing sponge. After the protrusions 29 are separated from the bearing plate 25, the water-absorbing sponge is reset to absorb water, making the absorption and drainage treatment of the seeped water smoother and more efficient.

[0048] Preferably, refer to Figure 5 and Figure 6 The protrusion 29 is rotatably connected with a roller 30 through a bearing. When the rotating shaft 28 rotates, the roller 30 rolls in contact with the bearing plate 25. Such a structure allows the protrusion 29 to roll in contact with the bearing plate 25 by utilizing the roller 30 when the protrusion 29 rotates, so that the vertical and lateral displacements of the protrusion 29 relative to the bearing plate 25 are smoother, and the contact and separation with the bearing plate 25 are smoother, and it is not easy to get stuck. The bottom of the water absorption trough 16 is a cone that is wide at the top and narrow at the bottom, so that the squeezed groundwater can be more concentrated at the bottom of the water absorption trough 16. The drain pipe 19 is connected to the bottom of the cone. Such a structure allows the drain pipe 19 to extract the groundwater gathered at the bottom of the water absorption trough 16 more cleanly and thoroughly, thereby improving the thoroughness of the discharge of the seeping groundwater.

[0049] Preferably, a plurality of expansion water stop strips 31 are provided between the newly-built foundation 1 and the side wall of the embedded groove 4. The expansion water stop strips 31 may adopt any existing structure that can expand after contacting water, so that when water seepage occurs, the expansion water stop strips 31 can block the seeping groundwater to a certain extent, thereby reducing the speed of water seepage and the possible harm and losses caused.

[0050] A construction method for a waterproof structure at a connection point between a new and an old building foundation, comprising the following steps:

[0051] S1. Dig an embedded groove 4 on the side of the original foundation 2, use a digging tool to dig a groove on the side wall of the original foundation 2, and apply a waterproof layer 3 after cleaning the side wall of the embedded groove 4. Clean the side wall of the embedded groove 4 after digging, make it flat and tidy, so that the paint can be better applied to the side wall of the embedded groove 4, and improve the firmness and waterproof effect of the waterproof layer 3;

[0052] S2. A plurality of transverse steel bars 7 are buried on the side of the embedded groove 4. Specifically, a hole is opened on the side wall of the embedded groove 4. The transverse steel bars 7 are inserted into the hole and fixed with glue. The transverse steel bars 7 extend into the area of ​​the newly built foundation 1. After the subsequent concrete pouring, the transverse steel bars 7 are used to connect the newly built foundation 1 and the original foundation 2. Then, a plurality of repeated grouting pipes 5 with grouting conduits 6 are placed at the bottom of the embedded groove 4. The repeated grouting pipes 5 are kept in contact with the bottom of the embedded groove 4, so that the repeated grouting pipes 5 will not be damaged due to the suspension of the repeated grouting pipes 5 during the later concrete pouring, making the later grouting smoother.

[0053] S3, install the vertical support rod 8 and the oblique support rod 9 on the transverse steel bar 7, specifically, they can be fixed by welding or wire binding, put the grouting conduit 6 into the receiving groove 15 of the oblique support rod 9, and seal the connection between the receiving groove 15 and the grouting conduit 6 by using a sealing strip, etc., to prevent concrete from entering the receiving groove 15, so that the top of the grouting conduit 6 can accurately extend to the top of the newly built foundation 1, so that during the later concrete pouring, the grouting conduit 6 is not easily squeezed and damaged by the concrete, and the smoothness of the grouting conduit 6 is maintained, and it will not bend, ensuring the smoothness of the subsequent grouting repair;

[0054] S4. Install the connecting plate 10 between the adjacent vertical support rods 8. Specifically, the connection can be fixed by welding or bolting. The multiple fasteners 11 at the bottom of the connecting plate 10 are sleeved on the outside of the repeated grouting pipe 5. The position where the fasteners 11 contact the repeated grouting pipe 5 is arc-shaped, so as to achieve better limit fixation of the repeated grouting pipe 5. Then, the fasteners 11 are installed at the bottom of the embedded groove 4 to fix the repeated grouting pipe 5. Generally, through holes are opened on both sides of the fasteners 11. The fasteners 11 are fixed to the bottom of the embedded groove 4 after the anchor bolts pass through the through holes. The connecting plate 10 is installed. The supporting plate 12 thereon contacts the side of the embedding groove 4, and the contact between the supporting plate 12 and the embedding groove 4 is used to realize indirect limit fixation of the position of the connecting plate 10, thereby improving the firmness of the overall structure of the connecting plate 10, and then the fixing bolt 13 with the humidity sensor 14 is installed to the side of the embedding groove 4, and specifically, bolt holes are opened on the side walls at the corresponding positions of the supporting plate 12 and the embedding groove 4, and the fixing bolt 13 is hammered into the bolt hole to realize the installation and fixation of the supporting plate 12 and the side wall of the embedding groove 4, so that the humidity sensor 14 is installed at the connection between the newly built foundation 1 and the original foundation 2;

[0055] S5. Install a water absorption trough 16 on the top of the embedded groove 4. The water absorption trough 16 is composed of a plate structure with waterproof material and is fixed to the top of the embedded groove 4 by anchor bolts. A water absorption layer 17 and a power component for squeezing the water absorption layer 17 are arranged in the water absorption trough 16. A drainage pipe 19 extending to the top of the newly built foundation 1 is arranged at the bottom of the water absorption trough 16. The water absorption layer 17 and the power component are both arranged in the water absorption trough 16 in advance. After the water absorption trough 16 is installed, the open part of the top of the water absorption trough 16 contacts the top of the embedded groove 4, so as to fix the water absorption trough 16 as a whole and realize the overall sealing treatment of the water absorption trough 16 to prevent the seeping groundwater from overflowing from the water absorption trough 16.

[0056] S6. Cast the newly constructed foundation 1 so that one end of it extends into the embedded groove 4. A water collection trough 18 is reserved on the newly constructed foundation 1 near the top of the original foundation 2. The top of the drainage pipe 19 extends into the water collection trough 18. The water collection trough 18 is used to collect the seeping groundwater, and the groundwater remaining at the connection is extracted, so that the remediation after the seepage occurs is faster and more efficient.

[0057] Working principle: The present invention sets an embedded groove 4 on the side of the original foundation 2, one end of the newly built foundation 1 extends into the embedded groove 4, and a waterproof layer 3 is set on the side wall where the newly built foundation 1 and the embedded groove 4 are in contact, so as to avoid water seepage in the building foundation, and a plurality of repeated grouting pipes 5 are set at the bottom of the embedded groove 4, and a grouting conduit 6 is connected to the repeated grouting pipe 5, and the grouting conduit 6 extends to the top of the newly built foundation 1. After the foundation construction is completed or in the case of subsequent water seepage, such a structure can be grouted from the grouting conduit 6, so that the slurry diffuses along the repeated grouting pipe 5 to the new foundation 1. The connection between the new foundation 1 and the original foundation 2 is sealed after the slurry solidifies, so as to avoid possible water seepage, prevent the harm and loss caused by continuous water seepage, and ensure the waterproof effect of the connection between the new and old building foundations; a plurality of transverse steel bars 7 extending to the inside of the new foundation 1 are arranged on the side of the embedded groove 4, and vertical support rods 8 and oblique support rods 9 are arranged on the transverse steel bars 7. A connecting plate 10 is arranged between adjacent vertical support rods 8, and a plurality of fasteners 11 are arranged at the bottom of the connecting plate 10. The fasteners 11 are sleeved on the outer side of the repeated grouting pipe 5 and connected to the bottom of the embedded groove 4, and the oblique support rods 9 are arranged on the side of the embedded groove 4. A receiving groove 15 is arranged on the top, and the grouting conduit 6 is arranged in the receiving groove 15. Such a structure can use the transverse steel bar 7 as a supporting carrier, fix the repeated grouting pipe 5 through the vertical support rod 8 and the fastener 11, and fix the grouting conduit 6 through the oblique support rod 9, so that during the pouring construction of the newly built foundation 1, the repeated grouting pipe 5 and the grouting conduit 6 are effectively supported and protected, thereby ensuring that the slurry can be smoothly diffused at the connection during the subsequent grouting repair, and ensuring the effect of subsequent plugging and repair; a support plate 12 is arranged on the connecting plate 10, and the support plate 12 extends to On the side of the embedded groove 4, a fixing bolt 13 is arranged on the side of the support plate 12 that contacts the embedded groove 4. The fixing bolt 13 is fixed on the side wall of the embedded groove 4. A humidity sensor 14 used in conjunction with the repeated grouting pipe 5 is arranged on the fixing bolt 13. Such a structure can monitor the water seepage at the connection. Once the humidity data of the humidity sensor 14 is too large, it indicates that water seepage may occur soon. Therefore, slurry is injected into the repeated grouting pipe 5 through the grouting conduit 6 in advance, and plugging and remediation are performed before water seepage occurs, thereby reducing the severity of subsequent water seepage and reducing the harm and loss that may be caused by water seepage;A water absorption groove 16 is provided at the top of the embedded groove 4, and a water absorption layer 17 and a power component for squeezing the water absorption layer 17 are provided in the water absorption groove 16. A water collecting groove 18 is provided at the top of the newly built foundation 1 in contact with the original foundation 2. Such a structure can use the water collecting groove 18 to collect the seepage water that has been generated to avoid the diffusion of the seepage water. At the same time, a drainage pipe 19 is provided at the bottom of the water absorption groove 16, and the top of the drainage pipe 19 extends to the water collecting groove 18. After the water seepage is repaired by grouting, the bottom of the connection between the newly built foundation 1 and the original foundation 2 is blocked, and the water in the water collecting groove 18 is cleaned by a water pump and other structures, and then the water absorption layer 17 is squeezed by the power component to make the water absorption The water absorbed in the layer 17 is squeezed out and discharged into the sump 18 through the drain pipe 19, while the water remaining in the connection above the grouting repair position is continuously absorbed by the squeezed water-absorbing layer 17 and continuously discharged through the drain pipe 19. Such a structure can timely block the bottom of the connection after water seepage has occurred, and the seepage water remaining above the connection is smoothly absorbed and discharged, thereby effectively blocking and draining the water seepage position, greatly reducing the harm caused by water seepage, reducing the impact on the subsequent construction above the newly built foundation 1, reducing the impact on the user experience of relevant personnel on the original foundation 2, and ensuring the effect of waterproof remediation treatment of the connection. ;

Claims

1. A waterproof structure for the connection between new and old building foundations, comprising a waterproof layer (3) arranged between a new foundation (1) and an old foundation (2), characterized in that: The side of the original foundation (2) is provided with an embedding groove (4), one end of the newly built foundation (1) extends into the embedding groove (4), the waterproof layer (3) is arranged between the newly built foundation (1) and the side wall of the embedding groove (4), a plurality of repeated grouting pipes (5) are arranged at the bottom of the embedded groove (4), a grouting conduit (6) is arranged on the repeated grouting pipe (5), and the grouting conduit (6) extends to the top of the newly built foundation (1), a plurality of transverse steel bars (7) are arranged on the side of the embedded groove (4) and extend into the interior of the newly built foundation (1), a vertical support rod (8) and an oblique support rod (9) are arranged on the transverse steel bars (7), a connecting plate (10) is arranged between adjacent vertical support rods (8), a plurality of fasteners (11) are arranged at the bottom of the connecting plate (10), the fasteners (11) are sleeved on the outside of the repeated grouting pipe (5) and connected to the bottom of the embedded groove (4), and a support plate is arranged on the connecting plate (10). (12), the support plate (12) extends to the side of the embedding groove (4), the end of the support plate (12) in contact with the side of the embedding groove (4) is provided with a fixing bolt (13), the fixing bolt (13) is fixed to the side wall of the embedding groove (4), the fixing bolt (13) is provided with a humidity sensor (14) used in conjunction with the repetitive grouting pipe (5), the oblique support rod (9) is provided with a receiving groove (15), the grouting conduit (6) is arranged in the receiving groove ( 15), a water absorption groove (16) is provided at the top of the embedded groove (4), a water absorption layer (17) is provided in the water absorption groove (16), a power component for squeezing the water absorption layer (17) is provided in the water absorption groove (16), a water collecting groove (18) is provided at the top of the newly built foundation (1) in contact with the original foundation (2), a drainage pipe (19) is provided at the bottom of the water absorption groove (16), and the top of the drainage pipe (19) extends into the water collecting groove (18); The water absorbing layer (17) is a water absorbing sponge. The top of the water absorbing sponge contacts the top of the embedding groove (4). The bottom of the water absorbing sponge is provided with a bearing plate (25). The bearing plate (25) is provided with a water leakage hole (26). The power assembly contacts the bearing plate (25). A plurality of vertical guide columns (27) are provided in the water absorbing groove (16). The guide columns (27) penetrate the bearing plate (25) and are slidably connected thereto. The power assembly comprises a rotating shaft (28). A plurality of protrusions (29) are provided on the side of the rotating shaft (28). When the rotating shaft (28) rotates, the protrusions (29) contact the bearing plate (25). A roller (30) is rotatably connected to the protrusion (29). When the rotating shaft (28) rotates, the roller (30) rolls and contacts the bearing plate (25). The bottom of the water absorbing groove (16) is a cone that is wide at the top and narrow at the bottom. The drainage pipe (19) is connected to the bottom of the cone.

2. A waterproof structure for the connection between new and old building foundations according to claim 1, characterized in that: The longitudinal section of the support plate (12) is an inverted L-shape, the vertical portion of the inverted L-shape is in contact with the side surface of the embedding groove (4), and the fixing bolt (13) is arranged on the vertical portion of the inverted L-shape.

3. A waterproof structure for the connection between new and old building foundations according to claim 2, characterized in that: One end of the fixing bolt (13) is in a pointed cone shape, the end of the pointed cone extends into the side wall of the embedding groove (4), and the other end of the fixing bolt (13) is provided with a stopper (20), the stopper (20) being in contact with the inverted L-shaped vertical portion of the support plate (12).

4. A waterproof structure for the connection between new and old building foundations according to claim 3, characterized in that: The stopper (20) is provided with a groove (21), the humidity sensor (14) is arranged in the groove (21), and a mesh plate (22) is provided at the end of the groove (21) for closing the groove (21).

5. A waterproof structure for the connection between new and old building foundations according to claim 1, characterized in that: One end of the receiving groove (15) is provided with a mounting opening (23), and the grouting conduit (6) enters the receiving groove (15) after passing through the mounting opening (23), and a buckle plate (24) is slidably connected to the mounting opening (23).

6. A waterproof structure for the connection between new and old building foundations according to claim 1, characterized in that: A plurality of expansion water stop strips (31) are also provided between the newly built foundation (1) and the side wall of the embedding groove (4).

7. A construction method for a waterproof structure at the connection between new and old building foundations according to claim 1, characterized in that: The steps include: S1, excavating an embedding groove (4) on the side of the original foundation (2), cleaning the side wall of the embedding groove (4), and applying a waterproof layer (3); S2, burying a plurality of transverse steel bars (7) on the side of the embedded groove (4), the transverse steel bars (7) extending to the area of ​​the newly built foundation (1), and then placing a plurality of repeated grouting pipes (5) with grouting conduits (6) at the bottom of the embedded groove (4); S3, installing a vertical support rod (8) and an oblique support rod (9) on the transverse reinforcement (7), placing the grouting conduit (6) into the receiving groove (15) of the oblique support rod (9), so that the top of the grouting conduit (6) can accurately extend to the top of the newly built foundation (1); S4, installing a connecting plate (10) between adjacent vertical support rods (8), wherein a plurality of fasteners (11) at the bottom of the connecting plate (10) are sleeved on the outside of the repetitive grouting pipe (5), and then the fasteners (11) are installed at the bottom of the embedding groove (4) to fix the repetitive grouting pipe (5), and after the connecting plate (10) is installed, the supporting plate (12) thereon contacts the side of the embedding groove (4), and then the fixing bolt (13) with the humidity sensor (14) is installed on the side of the embedding groove (4), so that the humidity sensor (14) is installed at the connection between the newly built foundation (1) and the original foundation (2); S5. A water absorption trough (16) is installed on the top of the embedded trough (4), a water absorption layer (17) and a power component for squeezing the water absorption layer (17) are arranged in the water absorption trough (16), and a drainage pipe (19) extending to the top of the newly built foundation (1) is arranged at the bottom of the water absorption trough (16); S6. Casting construction is performed on the newly constructed foundation (1) so that one end thereof extends into the embedded groove (4). A water collecting groove (18) is reserved on the newly constructed foundation (1) near the top of the original foundation (2), and the top of the drainage pipe (19) extends into the water collecting groove (18).

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