A reusable building foundation pit support beam component and its construction method

Abstract

This invention relates to the field of foundation pit support beam technology, specifically to a foundation pit support beam component and construction method that is easy to reuse. It includes: a standard section longitudinal support beam, a standard section transverse support beam, and a support plate. The standard section longitudinal support beam has a transverse support opening in the middle of its transverse section. One end of the standard section transverse support beam passes through the transverse support opening and is fixed with bolts. Both ends of the standard section longitudinal support beam are equipped with expansion joint support beams (first type) via bolts and connecting blocks. The standard section support mechanism achieves foundation pit support functions for both longitudinal and transverse structures. Adjustment between expansion joint support beams (first and second types) solves the problem of traditional foundation pit support beams being unusable for reuse. A support detection mechanism improves the safety of the support piles. Support rods are installed on the support columns to achieve vertical stability support for the support beam structure.

Description

Technical Field

[0001] This invention relates to the field of building foundation pit support beam technology, specifically to a building foundation pit support beam component and construction method that is easy to reuse. Background Technology

[0002] Support beams are a common structure used in foundation pit engineering. As one of the most important support structures in the foundation pit support system, support beams need to withstand enormous pressure from the surrounding environment of the foundation pit in practical applications. Currently, support beams are typically cast-in-place concrete components, prefabricated concrete components, or prefabricated steel structure components.

[0003] The existing technology has the following problems:

[0004] 1. The construction of cast-in-place concrete support beam components is difficult, costly, and time-consuming. Excavation can only be allowed after the concrete strength has risen to a certain level, which affects the construction progress of the foundation pit to a certain extent. In addition, cast-in-place concrete support beam components do not have a replaceable structure and cannot be recycled.

[0005] 2. Precast concrete support beam components need to be designed according to the shape of the foundation pit. The joints are also cast-in-place, which results in a long construction time. Excavation can only be allowed after the concrete strength has risen to a certain level.

[0006] 3. The internal supports of the prefabricated steel structure need to be designed and selected according to the shape of the foundation pit. They are custom-made prefabricated components, which do not have the ability to be replaced and cannot be reused. Summary of the Invention

[0007] The purpose of this invention is to provide a building foundation pit support beam component and construction method that are easy to reuse, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a building foundation pit support beam component that is easy to reuse, comprising: a standard section longitudinal support beam, a standard section transverse support beam and a support plate, wherein the standard section longitudinal support beam has a transverse support opening in the middle of the transverse section, one end of the standard section transverse support beam passes through the transverse support opening and is fixed by bolts, and both ends of the standard section longitudinal support beam are equipped with an expansion joint support beam by bolts and connecting blocks;

[0009] One end of the expansion joint support beam is slidably connected to an expansion connecting rod, and the other end of the expansion connecting rod is slidably connected to an expansion joint support beam. Both ends of the expansion connecting rod are fixedly installed in the expansion joint support beam and the expansion joint support beam.

[0010] Both the lower ends of the standard section longitudinal support beam and the expansion joint support beam are bolted with a support plate, and the lower end of the support plate is fixedly installed with a support column.

[0011] Preferably, the interior of the standard section longitudinal support beam, the expansion joint support beam one, and the expansion joint support beam two are all provided with cavities. A reinforcing rib is fixedly installed on the inner longitudinal side wall of the standard section longitudinal support beam. Several limiting blocks are uniformly fixedly installed on the bottom side wall of the lower end of the standard section longitudinal support beam and the expansion joint support beam one.

[0012] Preferably, one end of the connecting block is inserted into the longitudinal support beam of the standard section, and the other end is inserted into the inner side of one end of the expansion joint support beam. Both ends of the connecting block are fixed to the inner sides of the longitudinal support beam of the standard section and the expansion joint support beam by bolts.

[0013] Preferably, a plurality of circular holes are evenly provided on the side wall of the telescopic connecting rod, and threaded holes are provided on the side wall of the adjacent end of the telescopic joint support beam one and the telescopic joint support beam two. One end of the bolt is threadedly connected to the threaded hole, and passes through the threaded hole and is inserted into the circular hole on the side wall of the telescopic connecting rod.

[0014] Preferably, stress strain gauges are fixedly installed on one side wall of both the first and second expansion joint support beams. The stress strain gauges are electrically connected to a digital display controller via wires. An alarm is fixedly installed on one side wall of the digital display controller and electrically connected to the alarm.

[0015] Preferably, a sleeve is fitted on the outer wall of the end of the expansion joint support beam two away from the expansion joint support beam one. The sleeve is fixed to the outer wall of the expansion joint support beam two by bolts. An installation plate is fixedly installed on the other end of the sleeve. A hydraulic support column is fixedly installed at the center of the side wall of the installation plate. A baffle is fixedly installed on the outer side wall of the installation plate. The baffle is located outside the hydraulic support column.

[0016] Preferably, a plurality of limiting grooves are evenly provided on the upper side wall of the receiving plate, and extension plates are fixedly installed on the side walls of both the left and right ends of the receiving plate. The extension plates are fixedly installed on the lower end of the expansion joint support beam by bolts, and the plurality of limiting grooves are engaged with the outer ends of the plurality of limiting blocks.

[0017] Preferably, ear plates one are fixedly installed on both the lower left and right sides of the receiving plate, ear plates two are fixedly installed on both the upper left and right sides of the support column, and a base plate is fixedly installed on the lower end of the support column. A support rod is provided between each ear plate one and ear plate two. The upper end of the support rod is fixedly installed on ear plate one by bolts, and the top end of the support rod is in contact with the lower side wall of the expansion joint support beam one. The lower end of the support rod is fixedly installed on ear plate two by bolts, and the lower end of the support rod is in contact with the side wall of the support column.

[0018] A construction method for easily reusable building foundation pit support beams includes the following specific steps:

[0019] S1. First, connecting blocks are fixedly installed at both ends of the longitudinal support beam of the standard section by bolts, and the expansion joint support beam is fixedly installed at the other end of the connecting block by bolts.

[0020] S2. Then, according to the actual width of the foundation pit that needs to be supported, adjust the length of the two ends of the telescopic connecting rod inserted into the first and second telescopic joint support beams and fix them with bolts. Then, install the stress strain gauges on one side of the first and second telescopic joint support beams respectively, and electrically connect the stress strain gauges and the digital display controller. The digital display controller is electrically connected to the alarm.

[0021] S3. Next, install the mounting plate on the other end of the expansion joint support beam two, and install the hydraulic support column on the mounting plate.

[0022] S4. Finally, install one end of the support rod on the support column and the other end on the lower end of the receiving plate. Then, fix the receiving plate to the expansion joint support beam with bolts. Finally, erect the support column and fix it in the pit with the base plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The standard section support mechanism enables the foundation pit to be supported in both longitudinal and transverse directions.

[0025] 2. By adjusting the expansion joint support beam one and expansion joint support beam two, the problem that traditional foundation pit support beams cannot be reused is solved;

[0026] 3. Improve the safety of the support piles by using a support testing mechanism;

[0027] 4. Vertical stability of the support beam structure is achieved by installing support rods on the support columns. Attached Figure Description

[0028] Figure 1 This is a front view of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 3 This is a schematic diagram showing the partial structure of the present invention;

[0031] Figure 4 This is a bottom view of the longitudinal support beam of the standard section and the expansion joint support beam of the present invention;

[0032] Figure 5 This is a top view of the mounting plate of the present invention.

[0033] In the diagram: 1. Longitudinal support beam of standard section; 2. Transverse support opening; 3. Transverse support beam of standard section; 4. Reinforcing rib; 5. Connecting block; 6. Expansion joint support beam one; 7. Expansion joint support beam two; 8. Telescopic connecting rod; 9. Stress strain gauge; 10. Wire; 11. Digital display controller; 12. Alarm device; 13. Mounting plate; 14. Baffle; 15. Hydraulic support column; 16. Limiting block; 17. Receiving plate; 18. Extension plate; 19. Limiting groove; 20. Ear plate one; 21. Support column; 22. Ear plate two; 23. Support rod; 24. Base plate; 25. Sleeve. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0038] Please see Figures 1 to 5 This invention provides a technical solution: a reusable building foundation pit support beam component, comprising: a standard longitudinal support beam 1, a standard transverse support beam 3, and a support plate 17. The standard longitudinal support beam 1 has a transverse support opening 2 in its transverse middle section. One end of the standard transverse support beam 3 passes through the transverse support opening 2 and is fixed with bolts. The standard transverse support beam 3 serves as a support component for the transverse support structure. The standard longitudinal support beam 1, expansion joint support beam 6, and expansion joint support beam 7 all have internal cavities. Reinforcing ribs 4 are fixedly installed on the longitudinal sidewall of the inner end of the standard longitudinal support beam 1, strengthening the structure of the standard longitudinal support beam 1. Several limiting blocks 16 are uniformly fixedly installed on the bottom sidewall of the lower end of the standard longitudinal support beam 1 and expansion joint support beam 6.

[0039] Both ends of the longitudinal support beam 1 of the standard section are equipped with expansion joint support beam 6 by bolts and connecting blocks 5. One end of the connecting block 5 is inserted into the longitudinal support beam 1 of the standard section, and the other end is inserted into the inner side of one end of the expansion joint support beam 6. Both ends of the connecting block 5 are fixed to the inner side of the longitudinal support beam 1 and the expansion joint support beam 6 by bolts, and the expansion joint support beam 6 is fixedly installed on the side wall of one end of the longitudinal support beam 1 of the standard section.

[0040] One end of the expansion joint support beam 6 is slidably connected to the expansion connecting rod 8, and the other end of the expansion connecting rod 8 is slidably connected to the expansion joint support beam 7. Both ends of the expansion connecting rod 8 are fixedly installed in the expansion joint support beam 6 and the expansion joint support beam 7 by bolts. Several round holes (not marked in the figure) are evenly opened on the side wall of the expansion connecting rod 8. Threaded holes (not marked in the figure) are opened on the side wall of the expansion joint support beam 6 and the expansion joint support beam 7 at their adjacent ends. One end of the bolt is threadedly connected to the threaded hole, passes through the threaded hole, and is inserted into the round hole on the side wall of the expansion connecting rod 8. By allowing the bolt to be inserted into different round holes, the length of the expansion connecting rod 8 inserted into the expansion joint support beam 6 or the expansion joint support beam 7 can be adjusted, thereby adjusting the length of the support beam.

[0041] Both the lower ends of the standard section longitudinal support beam 1 and the expansion joint support beam 6 are bolted with a support plate 17, and a support column 21 is fixedly installed at the lower end of the support plate 17.

[0042] Stress strain gauges 9 are fixedly installed on one side wall of both expansion joint support beam 6 and expansion joint support beam 7. The stress strain gauges 9 are electrically connected to a digital display controller 11 via wires 10. An alarm 12 is fixedly installed on one side wall of the digital display controller 11 and is electrically connected to the alarm 12. Each longitudinal support beam is distributed with 4 sets of stress strain gauges 9, which are used to monitor physical quantities such as pressure, torque, displacement, and temperature of the standard longitudinal support beam 1, expansion joint support beam 6, and expansion joint support beam 7. The wires 10 transmit the stress strain signals to the digital display controller 11, which is used to display the stress strain of the standard support beam and the expansion joint support beam. The alarm 12, as a monitoring instrument, detects and compares the measured values ​​and alarms when the values ​​exceed a predetermined value.

[0043] A sleeve 25 is fitted onto the outer wall of the end of the expansion joint support beam 7 furthest from the expansion joint support beam 6. The sleeve 25 is fixed to the outer wall of the expansion joint support beam 7 by bolts. An installation plate 13 is fixedly installed at the other end of the sleeve 25. A hydraulic support column 15 is fixedly installed at the center of the side wall of the installation plate 13. A side steel plate is fixedly installed on the outer side wall of the hydraulic support column 15. The side steel plate serves as a separation component between the edge of the foundation pit and the hydraulic support column 15. It is welded to the hydraulic support column 15 and pressed tightly against the edge of the foundation pit. A baffle 14 is fixedly installed on the outer side wall of the installation plate 13. The baffle 14 is located on the outside of the hydraulic support column 15. The baffle 14 serves as a protective mechanism for the hydraulic support column 15, preventing it from being hit by external stones, tools, etc., and improving the overall safety of the support structure. The hydraulic support column 15 acts as a pressure-applying component, applying pressure to the support beam in advance. By tightening the longitudinal support beam with the hydraulic support column 15, the support beam can be used on site. By using the hydraulic support column 15 at the second end of the expansion joint support beam, a certain hydraulic pre-support force can be applied to the support beam and both sides of the foundation pit in advance, improving the stability of the assembled components.

[0044] Several limiting grooves 19 are evenly provided on the upper side wall of the receiving plate 17. Extension plates 18 are fixedly installed on the side walls of both the left and right ends of the receiving plate 17. The extension plates 18 are fixedly installed on the lower end of the expansion joint support beam 6 by bolts. Several limiting grooves 19 engage with the outer ends of several limiting blocks 16, so that the receiving plate 17 is firmly installed on the lower side walls of the standard section longitudinal support beam 1 and the expansion joint support beam 6. Ear plates 20 are fixedly installed on both the left and right sides of the lower end of the receiving plate 17. Ear plates 20 are fixedly installed on both the left and right sides of the upper end of the support column 21. The support column 21 is equipped with a second ear plate 22 and a base plate 24 is fixedly installed at the lower end. A support rod 23 is provided between each first ear plate 20 and the second ear plate 22. The upper end of the support rod 23 is fixedly installed on the first ear plate 20 by bolts, and the top end of the support rod 23 is in contact with the lower side wall of the expansion joint support beam 6. The lower end of the support rod 23 is fixedly installed on the second ear plate 22 by bolts, and the lower end of the support rod 23 is in contact with the side wall of the support column 21. The support rod 23 further enhances the stability of the installation between the support column 21 and the receiving plate 17.

[0045] When this device is in operation, connecting blocks 5 are fixedly installed at both ends of the longitudinal support beam 1 of the standard section with bolts. Expansion joint support beam 6 is fixedly installed at the other end of the connecting blocks 5 with bolts. Then, according to the width of the foundation pit to be supported, the length of the two ends of the telescopic connecting rod 8 inserted into the expansion joint support beam 6 and expansion joint support beam 7 is adjusted and fixed with bolts. Strain gauges 9 are then installed on one side of the expansion joint support beam 6 and expansion joint support beam 7 respectively, and the strain gauges 9 are electrically connected to the digital display controller 11, which is electrically connected to the alarm 12. An mounting plate 13 is installed at the other end of the expansion joint support beam 7, and a hydraulic support column 15 is installed on the mounting plate 13. One end of the support rod 23 is installed on the support column 21, and the other end is installed at the lower end of the receiving plate 17. The receiving plate 17 is then fixed to the expansion joint support beam 6 with bolts. Finally, the support column 21 is erected and fixed in the foundation pit by the base plate 24. The longitudinal support beam is then tightened by the hydraulic support column 15, enabling the on-site use of the support beam.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for easily reusable building foundation pit support beams. The supporting beams include: The standard section longitudinal support beam (1), the standard section transverse support beam (3) and the receiving plate (17) are connected by a connecting block (5). One end of the connecting block (5) is inserted into the standard section longitudinal support beam (1), and the other end is inserted into the inner side of one end of the expansion joint support beam (6). Both ends of the connecting block (5) are fixed to the inner side of the standard section longitudinal support beam (1) and the expansion joint support beam (6) by bolts. Stress strain gauges (9) are fixedly installed on one side wall of expansion joint support beam 1 (6) and expansion joint support beam 2 (7). The stress strain gauges (9) are electrically connected to a digital display controller (11) via wires (10). An alarm device (12) is fixedly installed on one side wall of the digital display controller (11) and electrically connected to the alarm device (12). The feature is that: the standard section longitudinal support beam (1) has a transverse support opening (2) in the middle of the transverse direction, one end of the standard section transverse support beam (3) passes through the transverse support opening (2) and is fixed by bolts, and both ends of the standard section longitudinal support beam (1) are equipped with a telescopic joint support beam (6) by bolts and connecting blocks (5). One end of the expansion joint support beam 1 (6) is slidably connected to the expansion joint connecting rod (8), and the other end of the expansion joint connecting rod (8) is slidably connected to the expansion joint support beam 2 (7). Both ends of the expansion joint connecting rod (8) are fixedly installed in the expansion joint support beam 1 (6) and the expansion joint support beam 2 (7) by bolts. The lower ends of the standard section longitudinal support beam (1) and the expansion joint support beam (6) are both bolted with a support plate (17), and the lower end of the support plate (17) is fixedly installed with a support column (21). The specific steps of the construction method are as follows: S1. First, the connecting blocks (5) are fixedly installed at both ends of the longitudinal support beam (1) of the standard section by bolts, and the expansion joint support beam (6) is fixedly installed at the other end of the connecting block (5) by bolts. S2. Then, according to the actual width of the foundation pit that needs to be supported, adjust the length of the two ends of the telescopic connecting rod (8) inserted into the first telescopic joint support beam (6) and the second telescopic joint support beam (7) and fix them with bolts. Then, install the stress strain gauge (9) on one side of the first telescopic joint support beam (6) and the second telescopic joint support beam (7) respectively, and connect the stress strain gauge (9) and the digital display controller (11) electrically. Connect the digital display controller (11) to the alarm (12). S3. Next, install the mounting plate (13) on the other end of the expansion joint support beam (7), and install the hydraulic support column (15) on the mounting plate (13). S4. Finally, install one end of the support rod (23) on the support column (21) and the other end on the lower end of the receiving plate (17). Then, fix the receiving plate (17) on the expansion joint support beam (6) with bolts. Finally, erect the support column (21) and fix it in the pit through the base plate (24).

2. The construction method for a reusable building foundation pit support beam according to claim 1, characterized in that: The standard section longitudinal support beam (1), the expansion joint support beam one (6) and the expansion joint support beam two (7) are all provided with cavities. The inner longitudinal side wall of the standard section longitudinal support beam (1) is fixedly installed with reinforcing ribs (4). Several limiting blocks (16) are evenly fixedly installed on the bottom side wall of the lower end of the standard section longitudinal support beam (1) and the expansion joint support beam one (6).

3. The construction method for a reusable building foundation pit support beam according to claim 1, characterized in that: The telescopic connecting rod (8) has several round holes evenly distributed on its side wall. The side walls of the telescopic joint support beam 1 (6) and the telescopic joint support beam 2 (7) are both provided with threaded holes. One end of the bolt is threadedly connected to the threaded hole and passes through the threaded hole and is inserted into the round hole on the side wall of the telescopic connecting rod (8).

4. The construction method for a reusable building foundation pit support beam according to claim 3, characterized in that: A sleeve (25) is fitted on the outer wall of the second (7) expansion joint support beam away from the first (6) expansion joint support beam. The sleeve (25) is fixed to the outer wall of the second (7) expansion joint support beam by bolts. An installation plate (13) is fixedly installed on the other end of the sleeve (25). A hydraulic support column (15) is fixedly installed at the center of the side wall of the installation plate (13). A baffle (14) is fixedly installed on the outer side wall of the installation plate (13). The baffle (14) is located outside the hydraulic support column (15).

5. The construction method for a reusable building foundation pit support beam according to claim 4, characterized in that: The upper sidewall of the receiving plate (17) is evenly provided with several limiting grooves (19). Extension plates (18) are fixedly installed on the sidewalls of both the left and right ends of the receiving plate (17). The extension plates (18) are fixedly installed at the lower end of the expansion joint support beam (6) by bolts. Several limiting grooves (19) are engaged with the outer ends of several limiting blocks (16).

6. The construction method for a reusable building foundation pit support beam according to claim 5, characterized in that: The lower end of the receiving plate (17) is fixedly installed with ear plate one (20) on both the left and right sides. The upper end of the support column (21) is fixedly installed with ear plate two (22) on both the left and right sides. The lower end of the support column (21) is fixedly installed with base plate (24). Each ear plate one (20) and ear plate two (22) is provided with a support rod (23). The upper end of the support rod (23) is fixedly installed on ear plate one (20) by bolts. The top end of the support rod (23) is in contact with the lower side wall of the expansion joint support beam one (6). The lower end of the support rod (23) is fixedly installed on ear plate two (22) by bolts. The lower end of the support rod (23) is in contact with the side wall of the support column (21).

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