Prefabricated concrete structure horizontal internal support

Abstract

The application provides a prefabricated concrete structure horizontal inner support, which comprises a plurality of connected beam bodies, and the end portions of the two outermost beam bodies are connected through a bearing assembly and a crown beam; the bearing assembly comprises two oppositely arranged fixed slides, the two fixed slides are connected through two follow-up slides, and an adjusting assembly is detachably arranged between the two follow-up slides, and the adjusting assembly is used for adjusting the position of the follow-up slide relative to the fixed slide. The application has compact structure, can greatly improve the efficiency of foundation pit construction, ensures the safety and stability of construction, and has good economic benefits.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a horizontal internal support for a prefabricated assembled concrete structure. Background Technology

[0002] Due to the limitations of the construction site environment, deep foundation pits are often supported by braced structures. Considering the stress characteristics of braced support structures, as excavation progresses, the stress state of the supports at different locations varies under the action of earth pressure and top load. For example, the first support at the top will be under tension. Therefore, the first layer of inner support is often a cast-in-place reinforced concrete structure, which is cast in place at the same time as the capping beam to form a whole. The advantage is that it has good integrity and can withstand tensile stress. The disadvantage is that excavation can only proceed after the concrete strength reaches a certain level. After construction is completed, it often needs to be dismantled, which is often done through destructive methods, which is time-consuming and labor-intensive, and the materials cannot be reused.

[0003] Chinese patent document CN 115787661 A describes a prefabricated support device and method for foundation pits, but the support device cannot be adjusted in a timely manner according to changes in force. Chinese patent document CN 113373944 A describes a concrete support installation structure and installation and dismantling method, which also has the above problems and has defects in use, requiring improvement. Summary of the Invention

[0004] This invention provides a prefabricated assembled concrete structure horizontal internal support, which solves the problems that the support cannot be adjusted in a timely manner as needed and cannot be reused during the stress process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a prefabricated assembled concrete structure horizontal internal support, including multiple connected beams, the ends of the two outermost beams are connected to the cap beam through a bearing component, the bearing component includes two fixed slides arranged opposite each other, the two fixed slides are connected by two follower slides, and an adjustment component is detachably provided between the two follower slides, the adjustment component is used to adjust the position of the follower slides relative to the fixed slides.

[0006] In the preferred embodiment, a baffle is provided on one side of the fixed slide, and the two sides of the fixed slide are connected to the beam and the cap beam by screws and nuts respectively.

[0007] In the preferred embodiment, the fixed slide is provided with guide grooves on both sides, the follower slide is provided with protrusions on both sides, the protrusions and guide grooves are slidably connected, the baffle is also provided with a first threaded hole, the first threaded hole is provided with a screw that can be detached, the fixed slide is also provided with buffer platforms on both sides, and the follower slide is provided with a third threaded hole at the bottom.

[0008] In the preferred embodiment, the follower slide has a fourth threaded hole in the middle, the adjustment assembly includes a threaded rod and a first hexagonal sleeve, the threaded rod and the first hexagonal sleeve are threadedly connected, a connector and a partition are provided on one side of the threaded rod, a second hexagonal sleeve is provided on one side of the first hexagonal sleeve, the outer dimensions of the second hexagonal sleeve are smaller than those of the first hexagonal sleeve, and a fifth threaded hole is provided through the first hexagonal sleeve and the second hexagonal sleeve.

[0009] In the preferred embodiment, the beam body is detachably equipped with an adaptive drive assembly and a base plate on both sides. The adaptive drive assembly includes a telescopic cylinder, a ratchet assembly, and a reversing assembly. The telescopic cylinder is mounted on the beam body. The ratchet assembly includes a force transmission part. A drive part and a lever are respectively provided on both sides of the force transmission part. The ratchet assembly and the lever are hinged together. The reversing assembly and the drive part are hinged together. The lower part of the drive part is connected to the beam body through a sleeve and an adjustment assembly. The base plate is connected to the beam body on both sides through screws and fixed slides.

[0010] In the preferred embodiment, the fixed slide is provided with a second threaded hole, and two clamping plates are provided parallel to each other on one side of the base plate. The two clamping plates are connected to form a locking groove, which is inserted into the fixed slide. A through hole is provided on one side of the locking groove, and a screw passes through the through hole and the second threaded hole. The other side of the base plate is slidably connected to the beam by a screw. A second oval groove is provided in the middle of the base plate, and a second hexagonal sleeve passes through the second oval groove.

[0011] In the preferred embodiment, a horizontal plate is connected to the other side of the base plate via a vertical plate, and an installation groove is provided on one side of the beam. The installation groove is provided with a pre-embedded sleeve, and a pre-embedded plate is connected to the installation groove by screws. Two clearance grooves are provided parallel to each other on the pre-embedded plate, and a first oblong groove passes through the clearance groove. The slider is slidably disposed in the clearance groove and the first oblong groove. Screws are inserted on the horizontal plate and the slider, and the screws and the slider are threadedly connected.

[0012] In the preferred embodiment, the bottom of the telescopic cylinder is connected to the beam via a lifting cylinder. The beam is provided with multiple embedded sleeves. The lifting cylinder includes a base and a first push rod. The first push rod is inserted into the base, and the base is connected to the embedded sleeves via screws. The upper part of the first push rod supports a top plate. The telescopic cylinder includes a cylinder body and a second push rod. The bottom of the cylinder body is hinged to the top plate via screws. A transition plate passes through the lever. The end of the second push rod is provided with a bayonet. A pin passes through the bayonet and the transition plate. A support plate is also hinged to the top plate. A third oblong groove passes through the support plate. Screws pass through the third oblong groove and the force transmission part.

[0013] In a preferred embodiment, the commutation assembly includes a motor, which is fixed by an adapter plate and a force transmission part. A disc is provided at the bottom of the motor, and a commutation plate is provided on the upper part of the drive part. The disc is hinged to the commutation plate by two push plates.

[0014] In the preferred embodiment, the push plate is provided with a fourth oblong groove on the side near the reversing plate. The two sides of the push plate are respectively hinged to the disc and the reversing plate. The lever is inserted into the fourth oblong groove and the reversing plate. The push plate is also provided with a step. A camera is detachably provided on the beam, and the camera is set facing the reversing plate side. The beneficial effects of this invention are: by changing the on-site cast concrete internal support to a prefabricated structure, and at the same time adjusting the stress state of the concrete internal support as needed, it is ensured that the concrete internal support always has sufficient prestress, and the overall support is firm, safe and reliable. 1) It can simultaneously meet the requirements of overall assembly and tensile strength; 2) Reliable support structure quality: Precast reinforced concrete internal supports are precast and cured uniformly in the factory, and the quality of concrete pouring and curing is superior to that of cast-in-place concrete internal supports. 3) High construction efficiency: Firstly, existing cast-in-place support structures often require equal strength, while precast reinforced concrete internal supports have reached 100% of the design strength when they leave the factory, saving the time of equal strength; Secondly, cast-in-place concrete internal supports require processes such as tying steel bars, setting up formwork, and pouring concrete, which involve many procedures, while precast reinforced concrete internal supports can be installed directly without any post-pouring strips, which is an integral prefabricated construction. 4) Reduce the exposure time of the foundation pit: During the excavation of the foundation pit, only the location of the capping beam is excavated first, and the soil in the middle of the foundation pit is not excavated. The capping beam and embedded parts are constructed first. After the capping beam has reached a certain strength, the soil in the middle of the foundation pit can be excavated. The excavation is carried out in layers and sections, and the section is supported immediately after excavation. The foundation pit can bear load immediately after the internal support is installed, thus reducing the exposure time of the foundation pit. This process perfectly conforms to the idea of ​​small-section excavation and support as it is excavated. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall state of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a right-side view of the present invention; Figure 4 This is a front view schematic diagram of the present invention; Figure 5 This is a bottom view schematic diagram of the present invention; Figure 6 This is a schematic diagram of the entire invention, state two; Figure 7 This is the overall schematic diagram of the present invention, state three; Figure 8 This is the overall schematic diagram of the present invention, state four; Figure 9This is an exploded structural diagram of the load-bearing component of the present invention; Figure 10 yes Figure 1 Explosion structure schematic diagram, state one; Figure 11 yes Figure 1 Explosion structure schematic diagram, state two; Figure 12 This is a schematic diagram of the exploded structure of the adaptive drive component of the present invention, state one; Figure 13 This is a schematic diagram of the exploded structure of the adaptive drive component of the present invention, state two; Figure 14 yes Figure 1 Explosion structure diagram, state three; Figure 15 yes Figure 1 Explosion structure diagram, state four.

[0016] In the figure: Beam 1; Embedded sleeve 101; Embedded plate 102; Clearance groove 103; First oval groove 104; Slider 105; Mounting groove 106; Bearing assembly 2; Fixed slide 201; Follower slide 202; First threaded hole 203; Second threaded hole 204; Guide groove 205; Protrusion 206; Baffle 207; Buffer platform 208; Third threaded hole 209; Fourth threaded hole 210; Adjustment assembly 3; Threaded rod 301; First hexagonal sleeve 302; Second hexagonal sleeve 303; Connector 304; Partition 305; Fifth threaded hole 306; Adaptive drive assembly 4; Base plate 5; Clamping plate 501; Locking groove 502; The 503; 504; 505; 506; 506; 6; 7; 8; 9; 901; 902; 903; 904; 905; 906; 10; 1001; 1002; 1003; 1004; 11; 11; 1102; 1103; 1104; 1105; 1106; 12 ... Detailed Implementation

[0017] like Figure 1-5In this paper, a precast concrete structure with horizontal internal support includes multiple connected beams 1. The ends of the two outermost beams 1 are connected to a cap beam via a load-bearing component 2. The load-bearing component 2 includes two fixed slides 201 arranged opposite each other, which are connected by two moving slides 202. An adjustment component 3 is detachably provided between the two moving slides 202 to adjust the position of the moving slides 202 relative to the fixed slides 201. This structure facilitates easy assembly and disassembly. It can be prefabricated in the factory, transported to the construction site, and then quickly constructed. During construction, the structure is stable, avoiding the defects of equal strength and exposure required in on-site casting. It can better cope with changes in environment and weather, ensuring the overall structural safety and reliability.

[0018] like Figure 9 In the preferred embodiment, a baffle 207 is provided on one side of the fixed slide 201, and the two sides of the fixed slide 201 are connected to the beam 1 and the capping beam respectively by screws 7 and nuts 8. This structure makes construction efficient and effective. When constructing the capping beam, the embedded parts are first installed on the side wall of the capping beam, and then the beam 1 and the capping beam are locked to the load-bearing component 2 by screws 7 and nuts 8, which is convenient to operate.

[0019] In the preferred embodiment, the fixed slide 201 has guide grooves 205 on both sides, and the follower slide 202 has protrusions 206 on both sides. The protrusions 206 and guide grooves 205 are slidably connected. The baffle 207 also has a first threaded hole 203, and a screw 7 is detachably installed in the first threaded hole 203. The fixed slide 201 also has buffer platforms 208 on both sides, and the follower slide 202 has a third threaded hole 209 at the bottom. This structure ensures good engagement between the fixed slide 201 and the follower slide 202. To ensure convenient operation, the adjustment component 3 can preferably be kept in a horizontal position, reducing the involvement of construction personnel and avoiding the risk of slippage during the installation of the follower slide 202.

[0020] In the preferred embodiment, the follower slide 202 has a fourth threaded hole 210 in the middle. The adjusting assembly 3 includes a threaded rod 301 and a first hexagonal sleeve 302, which are threadedly connected. A connector 304 and a partition 305 are provided on one side of the threaded rod 301, and a second hexagonal sleeve 303 is provided on one side of the first hexagonal sleeve 302. The second hexagonal sleeve 303 has a smaller outer dimension than the first hexagonal sleeve 302. A fifth threaded hole 306 passes through both the first and second hexagonal sleeves 302. This structure allows torque to be quickly provided to the threaded rod 301 through the connector 304, thereby adjusting the position of the threaded rod 301. This changes the distance between the two fixed slides 201, thus changing the distance between the follower slides 202, and consequently, the relative distance between the beam 1 and the foundation pit 1, meeting the construction design requirements and ensuring the load-bearing capacity is within the design range.

[0021] like Figure 6-8 In the preferred embodiment, the beam body 1 is detachably provided with an adaptive drive assembly 4 and a base plate 5 on both sides. The adaptive drive assembly 4 includes a telescopic cylinder 10, a ratchet assembly 11, and a reversing assembly 12. The telescopic cylinder 10 is mounted on the beam body 1. The ratchet assembly 11 includes a force transmission part 1101. The force transmission part 1101 is provided with a drive part 1102 and a lever 1105 on both sides. The ratchet assembly 11 and the lever 1105 are hinged together. The reversing assembly 12 and the drive part 1102 are hinged together. The lower part of the drive part 1102 is connected to the adjusting assembly 3 through a sleeve 1104. The base plate 5 is connected to the beam body 1 on both sides through screws 7 and a fixed slide 201. A strain gauge pressure sensor is installed in the guide groove 205 of the fixed slide 201, which can sensitively detect the pressure change between the follower slide 202 and the beam 1. The extension and retraction of the telescopic cylinder 10 drives the ratchet assembly 11 to rotate, thereby changing the position of the threaded rod 301 and the distance between the two fixed slides 201. This keeps the pressure between the follower slide 202 and the fixed slide 201 within a suitable range, ensuring overall safety and efficiency. Furthermore, the overall internal load-bearing capacity is balanced, allowing for repeated use and ensuring a longer service life.

[0022] In the preferred embodiment, the fixed slide 201 is provided with a second threaded hole 204, and two clamping plates 501 are provided parallel to each other on one side of the base plate 5. The two clamping plates 501 are connected to form a locking groove 502, which is inserted into the fixed slide 201. A through hole 506 is provided on one side of the locking groove 502, and a screw 7 is inserted into the through hole 506 and the second threaded hole 204. The other side of the base plate 5 is slidably connected to the beam 1 by the screw 7. A second oblong groove 503 is provided in the middle of the base plate 5, and a second hexagonal sleeve 303 is inserted into the second oblong groove 503. The second oblong groove 503 and the second hexagonal sleeve 303 are matched in shape, and the two sides of the second hexagonal sleeve 303 are attached to the side wall of the second oblong groove 503. The second oblong groove 503 suppresses the rotation tendency of the second hexagonal sleeve 303, so that when the threaded rod 301 rotates, the second hexagonal sleeve 303 only moves in the axial direction without changing the angle, making the overall use safe and efficient.

[0023] In the preferred embodiment, a horizontal plate 505 is connected to the other side of the base plate 5 via a vertical plate 504. A mounting groove 106 is provided on one side of the beam 1, and a pre-embedded sleeve 101 is provided in the mounting groove 106. A pre-embedded plate 102 is connected to the mounting groove 106 via screws 7. Two parallel clearance grooves 103 are provided on the pre-embedded plate 102, and a first oblong groove 104 passes through the clearance groove 103. A slider 105 is slidably disposed within the clearance groove 103 and the first oblong groove 104. Screws 7 pass through the horizontal plate 505 and the slider 105, and the screws 7 and the slider 105 are threadedly connected. This structure ensures that when the position of the follower slide 202 relative to the fixed slide 201 is changed, the position of the beam 1 changes. At this time, because the fixed slide 201 on one side of the base plate 5 and the foundation pit side are interlocked, the position of the fixed slide 201 on the beam 1 changes. Thus, the base plate 5 remains in a position to move only laterally relative to the beam 1, while the longitudinal load-bearing capacity remains unchanged, resulting in high movement accuracy.

[0024] like Figure 10-15In the preferred embodiment, the bottom of the telescopic cylinder 10 is connected to the beam 1 via a lifting cylinder 9. The beam 1 has multiple embedded sleeves 101. The lifting cylinder 9 includes a base 901 and a first push rod 903, which is inserted into the base 901. The base 901 is connected to the embedded sleeves 101 via screws 7. A top plate 902 is supported on the upper part of the first push rod 903. The telescopic cylinder 10 includes a cylinder body 1001 and a second push rod 1002. The bottom of the cylinder body 1001 is hinged to the top plate 902 by screws 7. A transition plate 1106 passes through the lever 1105. The end of the second push rod 1002 is provided with a bayonet 1003. The pin 1004 passes through the bayonet 1003 and the transition plate 1106. A support plate 904 is also hinged to the top plate 902. A third oblong groove 905 passes through the support plate 904. Screws 7 pass through the third oblong groove 905 and the force transmission part 1101. When the movement of the threaded rod 301 is restricted, the height of the ratchet assembly 11 can be adjusted according to the lifting cylinder 9, thereby ensuring that there is still room for adjustment. It is easy to use. Only the extension and retraction of the second push rod 1002 of the telescopic cylinder 10 is needed to provide stable torque to the ratchet assembly 11.

[0025] In a preferred embodiment, the commutation assembly 12 includes a motor 1201, which is fixed via an adapter plate 1106 and a force transmission part 1101. A disc 1202 is located at the bottom of the motor 1201, and a commutation plate 1103 is located on the upper part of the drive part 1102. The disc 1202 is hinged to the commutation plate 1103 via two push plates 1203. This structure allows for adjustment of the position of the commutation plate 1103 as needed, ensuring convenient rotation of the threaded rod 301. The motor 1201 is connected to a reduction gear structure, ensuring smooth and stable movement of the commutation plate 1103 to both sides. After rotation to the desired position, the push plates 1203 lock the commutation plate 1103 in position and angle, resulting in safe and efficient overall operation.

[0026] In the preferred embodiment, the push plate 1203 has a fourth oblong groove 1204 on the side near the reversing plate 1103. The two sides of the push plate 1203 are hinged to the disc 1202 and the reversing plate 1103 respectively. A lever 1105 is inserted into the fourth oblong groove 1204 and the reversing plate 1103. A step 1205 is also provided on the push plate 1203. A camera 6 is detachably mounted on the beam 1, facing the reversing plate 1103. This structure facilitates overall use. The camera 6 monitors the working status of the reversing plate 1103, ensuring safe operation. The step 1205 on the push plate 1203 ensures high space utilization and good performance.

[0027] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A precast assembled concrete structure horizontal internal bracing, characterized in that: The structure includes multiple connected beams (1), with the ends of the two outermost beams (1) connected to the cap beam via a bearing assembly (2). The bearing assembly (2) includes two fixed slides (201) arranged opposite to each other. The two fixed slides (201) are connected by two follower slides (202). An adjustment assembly (3) is detachably provided between the two follower slides (202). The adjustment assembly (3) is used to adjust the position of the follower slides (202) relative to the fixed slides (201). The fixed slide (201) is provided with guide grooves (205) on both sides, and the follower slide (202) is provided with protrusions (206) on both sides. The protrusions (206) and the guide grooves (205) are slidably connected. The baffle (207) is also provided with a first threaded hole (203). The first threaded hole (203) is detachably provided with a screw (7). The fixed slide (201) is also provided with buffer platforms (208) on both sides. The follower slide (202) is provided with a third threaded hole (209) at the bottom. The follower slide (202) has a fourth threaded hole (210) in the middle. The adjustment component (3) includes a threaded rod (301) and a first hexagonal sleeve (302). The threaded rod (301) and the first hexagonal sleeve (302) are threaded together. A connector (304) and a partition (305) are provided on one side of the threaded rod (301). A second hexagonal sleeve (303) is provided on one side of the first hexagonal sleeve (302). The outer dimensions of the second hexagonal sleeve (303) are smaller than those of the first hexagonal sleeve (302). A fifth threaded hole (306) is provided through the first hexagonal sleeve (302) and the second hexagonal sleeve (303). The beam (1) is detachably provided with an adaptive drive assembly (4) and a base plate (5) on both sides. The adaptive drive assembly (4) includes a telescopic cylinder (10), a ratchet assembly (11) and a reversing assembly (12). The telescopic cylinder (10) is set on the beam (1). The ratchet assembly (11) includes a force transmission part (1101). The force transmission part (1101) is provided with a drive part (1102) and a lever (1105) on both sides respectively. The ratchet assembly (11) and the lever (1105) are hinged together. The reversing assembly (12) and the drive part (1102) are hinged together. The lower part of the drive part (1102) is connected to the adjustment assembly (3) through a sleeve (1104). The base plate (5) is connected to the beam (1) on both sides through screws (7) and a fixed slide (201) respectively. The bottom of the telescopic cylinder (10) is connected to the beam (1) via a lifting cylinder (9). The beam (1) is provided with multiple embedded sleeves (101). The lifting cylinder (9) includes a base (901) and a first push rod (903). The first push rod (903) is inserted into the base (901). The base (901) is connected to the embedded sleeves (101) via screws (7). The top plate (902) is supported on the upper part of the first push rod (903). The telescopic cylinder (10) includes a cylinder body (1001) and a second push rod (1002). The cylinder body (1001) is connected to the beam (1002) via a lifting cylinder (901). 001) The bottom is hinged to the top plate (902) by screws (7), and the lever (1105) has a connecting plate (1106) through it. The end of the second push rod (1002) is provided with a bayonet (1003). The pin (1004) passes through the bayonet (1003) and the connecting plate (1106). The top plate (902) is also hinged to a support plate (904). The support plate (904) has a third oblong groove (905) through it. The screw (7) passes through the third oblong groove (905) and the force transmission part (1101). The commutation assembly (12) includes a motor (1201), which is fixed by a transition plate (1106) and a force transmission part (1101). A disc (1202) is provided at the bottom of the motor (1201), and a commutation plate (1103) is provided on the upper part of the drive part (1102). The disc (1202) is hinged to the commutation plate (1103) by two push plates (1203). The push plate (1203) has a fourth oblong groove (1204) on the side near the reversing plate (1103). The two sides of the push plate (1203) are respectively hinged to the disc (1202) and the reversing plate (1103). The lever (1105) is inserted into the fourth oblong groove (1204) and the reversing plate (1103). The push plate (1203) also has a step (1205).

2. The horizontal internal support for a precast assembled concrete structure according to claim 1, characterized in that: A baffle (207) is provided on one side of the fixed slide (201), and the two sides of the fixed slide (201) are connected to the beam (1) and the cap beam by screws (7) and nuts (8) respectively.

3. The horizontal internal bracing of a precast assembled concrete structure according to claim 1, characterized in that: The fixed slide (201) is provided with a second threaded hole (204). Two clamping plates (501) are provided parallel to one side of the base plate (5). The two clamping plates (501) are connected to form a locking groove (502). The locking groove (502) and the fixed slide (201) are inserted into each other. A through hole (506) is provided on one side of the locking groove (502). A screw (7) is inserted into the through hole (506) and the second threaded hole (204). The other side of the base plate (5) is slidably connected to the beam (1) by the screw (7). A second oval groove (503) is provided in the middle of the base plate (5). A second hexagonal sleeve (303) is inserted into the second oval groove (503).

4. The horizontal internal support for a precast assembled concrete structure according to claim 3, characterized in that: On the other side of the base plate (5), a horizontal plate (505) is connected by a vertical plate (504). A mounting groove (106) is provided on one side of the beam (1). An embedded sleeve (101) is provided in the mounting groove (106). An embedded plate (102) is connected to the mounting groove (106) by a screw (7). Two clearance grooves (103) are provided in parallel on the embedded plate (102). A first oval groove (104) passes through the clearance groove (103). A slider (105) is slidably disposed in the clearance groove (103) and the first oval groove (104). A screw (7) passes through the horizontal plate (505) and the slider (105). The screw (7) and the slider (105) are threadedly connected.

5. The horizontal internal support for a precast assembled concrete structure according to claim 1, characterized in that: A camera (6) is detachably mounted on the beam (1), and the camera (6) is positioned facing the reversing plate (1103).

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