A kind of inclined support device with angle adaptation

Abstract

The inclined brace inclination angle adaptation support device disclosed in the present invention comprises a base plate, an angle adjustment bracket and a support member. The base plate is connected to a corbel support, wherein the corbel support is arranged on the foundation pit wall waist beam or the foundation pit bottom; one end of the angle adjustment bracket is connected to the base plate rotating shaft and rotates relative to the base plate to adjust the opening angle between the base plate and the support member; the support member is directly in contact with the inclined brace steel pipe, and is used to constrain the position of the inclined brace steel pipe and bear the load transmitted by the steel pipe. The angle adjustment bracket structure is provided with multiple gears, and the appropriate gear can be selected according to the inclination difference of the corbel support surface, so that the top surface of the inclined brace steel pipe is completely in contact with the support surface of the support plate member, so as to achieve the purpose of giving full play to the top support function of the inclined brace, ensure the construction quality of the inclined brace support structure, and at the same time avoid the extension of the construction period caused by design changes and redoing, which has obvious invention significance for foundation pit engineering.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to the installation and erection of an oblique bracing support structure in foundation pit construction. Background Art

[0002] The foundation pit support system involves the interaction between soil and support. Foundation pit construction, especially in densely built areas, will be restricted by existing structures such as surrounding buildings (structures) and underground pipelines, and has higher requirements for the support capacity and overall rigidity of the support system. It must not only provide sufficient and stable support for the foundation pit to ensure safe and convenient construction in the pit, but also effectively control the deformation and displacement of the soil at the bottom of the pit, outside the pit and behind the wall, to ensure the normal operation of surrounding buildings (structures) and existing underground facilities.

[0003] In the foundation pit support system, in order to improve the rigidity and stability of the local position of the support structure (such as interlocking cast-in-place piles, underground continuous walls, etc.), the inclined brace structure is required. The inclined brace has obvious social and economic benefits in the foundation pit support system because of its flexible structural layout, convenient earth excavation, short construction period and relatively low cost.

[0004] The installation and erection of the diagonal brace usually starts with making reinforced concrete corbel structures at the corresponding positions of the pit wall and pit bottom of the installation location, which serve as the supports at both ends of the diagonal brace structure; then the diagonal brace main components are assembled with steel pipes, and the two ends are lifted to the corresponding supports by a crane; finally, prestress is applied from the bottom support using a jack to make the diagonal brace fit more closely to the structure and provide more adequate support.

[0005] However, in actual operation, the manufacturing quality of the concrete bracket supports at both ends is often difficult to guarantee, resulting in discrepancies in shape and size compared to the design, resulting in a certain angle between the end face of the steel main component of the diagonal brace and the support surface of the support. This will cause the diagonal brace and the support structure to change from the designed surface contact to edge contact. On the one hand, due to stress concentration at the contact position, the deformation is too large, affecting the application of prestress; on the other hand, the diagonal brace contact edge will break the concrete, causing damage to the support and making it difficult to play a supporting role.

[0006] In addition, during the construction process, the design of the angle of the diagonal brace may be changed. For the diagonal braces that are still being installed or have been installed, this will undoubtedly increase their construction costs and affect the construction progress.

[0007] Therefore, it is urgent to invent a device to solve the above-mentioned problem of the difference between the inclination angle of the inclined brace and the end face of the support caused by the actual construction quality and design changes. Summary of the invention

[0008] In order to solve the problem in the prior art that a certain angle exists between the end face of the inclined brace steel main component and the support surface of the support, which affects the construction quality of the foundation pit support system, the present invention discloses an inclined brace inclination angle adaptation support top device.

[0009] The present invention is achieved through the following technical solutions:

[0010] A device for supporting the top of an inclined brace with an angle adaptation is applied to an inclined brace structure, wherein the inclined brace structure comprises: a corbel support fixed on the bottom of a foundation pit or a waist beam of a foundation pit wall, and a brace steel pipe with two ends respectively fixed on the corbel support. The device is installed between the corbel support and the brace steel pipe, and comprises: a base plate, an angle adjustment bracket and a supporting member;

[0011] The base plate is fixed on the corbel support, the angle adjustment bracket and the support member are respectively hinged on both sides of the base plate, the support member rotates relative to the base plate, and the edge of the support member away from the base plate is fixed on the angle adjustment bracket, the angle adjustment bracket increases or decreases the inclination angle of the support member relative to the base plate, and the end face of the support steel pipe is attached to the support member.

[0012] Furthermore, the base plate comprises: a base steel plate and embedded steel bars;

[0013] The base steel plate is installed against a surface of the corbel support facing the support steel pipe, and the implanted steel bars pass through the base steel plate and are embedded in the corbel support.

[0014] Furthermore, the angle adjustment bracket includes: a rotating shaft, a screw rod, a nut and a bracket bar;

[0015] The rotating shaft is arranged in the base plate and exposed at two sides of the base plate;

[0016] The screw rod is arranged in the supporting member and is located at an edge of one side of the supporting member away from the base plate, and two ends of the screw rod are exposed at two sides of the supporting member;

[0017] The support bar is installed on both sides of the base plate through the rotating shaft, and the supporting member is fixed on the support bar through the screw rod; the nut is fixed on the screw rod to relatively fix the support bar and the supporting member.

[0018] Furthermore, the support bar is provided with a plurality of grooves, and the screw rod is fixed in the grooves; the grooves are provided along the edge of the support bar, and the grooves are inclined toward one end of the rotating shaft.

[0019] Further, the support member comprises: a support plate and a wedge-shaped steel support arranged on the support plate;

[0020] The wedge-shaped steel support is perpendicular to the support plate and is fixed to a side of the support plate facing away from the base plate. The castor steel pipe is fixed relative to the support plate through the wedge-shaped steel support.

[0021] Furthermore, the wedge-shaped steel support includes a vertical portion and an inclined portion, a plurality of end reinforcing ribs are provided on the caster steel pipe, and the inclined portion is attached to the surface of the caster steel pipe and inserted between adjacent end reinforcing ribs.

[0022] Furthermore, a hinge shaft is arranged on a side plate edge of the support plate close to the base plate, and a hinge hole is arranged on the base plate; the hinge shaft is inserted into the hinge hole to enable the support plate to rotate relative to the base plate.

[0023] Furthermore, the support plate is provided with lugs, and both ends of the hinge shaft are fixed on the lugs.

[0024] Furthermore, a plurality of fixing holes are provided on a side of the support plate facing the castor steel pipe, and the fixing holes are provided between the wedge-shaped steel support and the hinge shaft. Bolts are fixed in the fixing holes and abut against the castor steel pipe, so that the castor steel pipe is fixed between the bolts and the wedge-shaped steel support.

[0025] Furthermore, the device also includes a fixing assembly, and the fixing assembly includes an annular locking member and a fixing shaft member;

[0026] The annular locking member includes a semicircular annular portion and extension portions arranged at both ends of the annular portion, the fixed shaft member includes a fixing plate and shaft ends located at both ends of the fixing plate, the shaft ends are fixed on the angle adjustment bracket, the annular portion is against the supporting steel pipe, and the extension portion is inserted into the fixing plate and fixed on the fixing plate.

[0027] The beneficial effects of the present invention are:

[0028] The present invention sets a plurality of gears in the angle adjustment clamping structure of the inclined brace inclination adapter supporting device, selects a suitable gear according to the inclination difference of the corbel support surface, so that the top surface of the inclined brace steel pipe is completely in contact with the supporting surface of the supporting plate component, so as to achieve the purpose of giving full play to the supporting function of the inclined brace, ensure the construction quality of the inclined brace supporting structure, and avoid the extension of the construction period caused by design changes and redoing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the installation of the inclined brace structure and the inclined brace inclination angle adaptation support device of the present invention in the foundation pit;

[0030] Figure 2 It is a schematic diagram of the assembly of the inclined support angle adaptation support device of the present invention;

[0031] Figure 3 for Figure 2 Schematic diagram of the decomposition structure;

[0032] Figure 4 It is the fixed position of the fixing assembly described in the present invention between the supporting steel pipe and the supporting bar.

[0033] [Description of Reference Numerals]

[0034] 1. Pit wall waist beam; 2. Corbel support; 3. Inclined brace inclination adapter support device; 31. Base plate; 311. Base steel plate; 312. Implanted steel bars; 313. Hinge hole; 32. Support member; 321. Wedge-shaped steel support; 322. Support plate; 321a. Vertical portion; 321b. Inclined portion; 323. Hinge shaft; 324. Lug; 33. Angle adjustment bracket; 331. Bracing bar; 331a. Groove; 332. Nut; 333. Rotating shaft; 334. Screw; 4. Bracing steel pipe; 41. End reinforcement rib; 5. Fixing assembly; 511. Ring portion; 512. Extension portion; 521. Fixing plate; 522. Shaft end. DETAILED DESCRIPTION

[0035] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figures 1 to 3 The inclined brace inclination angle adaptation support device disclosed in the present invention is applied to an inclined brace structure, which includes a corbel support 2 fixed on the bottom of the foundation pit or the waist beam 1 of the foundation pit wall, and a brace steel pipe 4 with both ends respectively fixed on the corbel support 2. The inclined brace inclination angle adaptation support device 3 disclosed in the present invention is installed between the corbel support 2 and the brace steel pipe 4.

[0038] The oblique brace inclination angle adaptation support device 3 comprises: a base plate 31 , an angle adjustment bracket 33 and a support member 32 .

[0039] The base plate 31 is fixed on the corbel support 2, the angle adjustment bracket 33 and the support member 32 are respectively hinged on both sides of the base plate 31, the support member 32 rotates relative to the base plate 31, and the side edge of the support member 32 away from the base plate 31 is fixed on the angle adjustment bracket 33, the angle adjustment bracket 33 increases or decreases the inclination angle of the support member 32 relative to the base plate 31, and the end face of the support steel pipe 4 is attached to the support member 32.

[0040] In the above-mentioned embodiment, the angle adjustment bracket 33, the base plate 31 and the supporting member 32 form a triangle located between the corbel support 2 and the castor steel pipe 4, the base plate 31 is attached to the corbel support 2, and the supporting member 32 is attached to the end face of the castor steel pipe 4. The inclined brace inclination angle adapter support top device described in the present invention is used to fit the corbel support 2 and the brace steel pipe 4 respectively, so as to avoid the surface contact between the brace steel pipe 4 and the corbel support 2 changing to edge contact due to installation error. The support member 32 can effectively ensure that the contact with the brace steel pipe 4 is end face contact. The operator can adjust the angle between the base plate 31 and the support member 32 according to the inclination angle error between the end face of the brace steel pipe 4 and the corbel support 2 during the actual installation process. After the adjustment, the angle adjustment bracket 33 is fixed between the base plate 31 and the support member 32, so as to achieve surface contact between the brace steel pipe 4 and the corbel support 2, eliminate the inclination angle error, avoid the brace steel pipe 4 being installed between the corbel supports 2 in a state of edge contact, and ensure the structural stability of the inclined brace structure.

[0041] In the above embodiment, the base plate 31 of the present invention comprises: a base steel plate 312 and an implanted steel bar 311. The base steel plate 312 is installed close to the side of the corbel support 2 facing the castor steel pipe 4, and the implanted steel bar 311 passes through the base steel plate 312 and is embedded in the corbel support 2.

[0042] In the present invention, the corbel support 2 is formed by pouring concrete. When manufacturing the corbel support 2, the embedded steel bars 311 are inserted into the concrete. When the concrete solidifies to form the corbel support 2, the base steel plate 312 is fixed on the corbel support 2 through the gripping force of the concrete on the embedded steel bars 311.

[0043] The angle adjustment bracket 33 includes: a rotating shaft 333, a screw rod 334, a nut 332 and a bracket bar 331. The rotating shaft 333 is arranged in the base plate 31 and exposed at both sides of the base plate 31, and the bracket bar 331 is installed on both sides of the base plate 31 through the rotating shaft 333. The bracket bar 331 can rotate relative to the base plate 31. The screw rod 334 is arranged in the support member 32 and is located at a side edge of the support member 32 away from the base plate 31, and both ends of the screw rod 334 are exposed at both sides of the support member 32.

[0044] When fixing the base plate 31 and the support member 32, rotate the support member 32 to the target angle, and then fix it to the support bar 331 through the screws 334 on both sides of the support member 32. After fixing, tighten the nut 332 on the screw 334 to stably fix the support bar 331 and the support member 32.

[0045] Specifically, the support bar 331 is provided with a plurality of grooves 331 a, and the screw rod 334 is fixed in the grooves 331 a. The grooves 331 a are provided along the edge of the support bar 331 , and the grooves 331 a are inclined toward one end of the rotating shaft 333 .

[0046] In the present invention, the two ends of the castor steel pipe 4 are respectively against the corbel support 2 or the supporting member 32, and the direction of force on the supporting member 32 is toward the corbel support 2 and the base plate 31. The groove 331a on the support bar 331 in the present invention is inclined toward the rotating shaft 333, that is, one end of the base plate 31, which can effectively prevent the supporting member 32 from detaching from the groove 331a. The castor steel pipe 4 pushes the supporting member 32, so that the screw 334 is stably fixed in the groove 331a.

[0047] The support member 32 includes: a support plate 322 and a wedge-shaped steel bracket 321 disposed on the support plate 322. The wedge-shaped steel bracket 321 is perpendicular to the support plate 322 and fixed to a side of the support plate 322 away from the base plate 31, and the caster steel pipe 4 is fixed relative to the support plate 322 through the wedge-shaped steel bracket 321.

[0048] In this embodiment, the wedge-shaped steel supports 321 are used to position the supporting steel pipe 4 on the support plate 322 , and the supporting steel pipe 4 is abutted against the two wedge-shaped steel supports 321 and fixed on the support plate 322 .

[0049] The wedge-shaped steel support 321 includes a vertical portion 321a and an inclined portion 321b. A plurality of end reinforcing ribs 41 are provided on the bracing steel pipe 4. The inclined portion 321b is close to the surface of the bracing steel pipe 4 and inserted between adjacent end reinforcing ribs 41. The close contact of the inclined portion 321b with the bracing steel pipe 4 indicates that the end surface of the bracing steel pipe 4 is in contact with the surface of the support plate 322. The insertion of the inclined portion 321b between adjacent end reinforcing ribs 41 can effectively prevent the bracing steel pipe 4 from rotating relative to the support plate 322, thereby ensuring the fixed stability of the bracing steel pipe 4.

[0050] A hinge shaft 323 is disposed on a side plate edge of the support plate 322 close to the base plate 31 , and a hinge hole 313 is disposed on the base plate 31 ; the hinge shaft 323 is inserted into the hinge hole 313 to enable the support plate 322 to rotate relative to the base plate 31 .

[0051] In an achievable embodiment of the present invention, the support plate 322 is provided with lugs 324, and both ends of the hinge shaft 323 are fixed on the lugs 324. When the support plate 322 is mounted on the base plate 31, the lugs 324 are located on both sides of the hinge hole 313.

[0052] In a preferred embodiment of the present invention, a plurality of fixing holes are provided on one side of the support plate 322 facing the caster support steel pipe 4, and the fixing holes are provided between the wedge-shaped steel bracket 321 and the hinge shaft 323. Bolts are fixed in the fixing holes and abut against the caster support steel pipe 4, so that the caster support steel pipe 4 is fixed between the bolts and the wedge-shaped steel bracket 321. The fixing holes are screw holes, and the present invention can fix the caster support steel pipe 4 by combining bolts and the wedge-shaped steel bracket 321.

[0053] Please refer to Figure 4 In a preferred embodiment of the present invention, the inclined strut inclination adaptation support device 3 also includes a fixing assembly 5, and the fixing assembly 5 includes an annular locking member and a fixed shaft member; the annular locking member includes a semicircular annular portion 511 and an extension portion 512 arranged at both ends of the annular portion 511, and the fixed shaft member includes a fixing plate 521 and shaft ends 522 located at both ends of the fixing plate 521, and the shaft ends 522 are fixed on the angle adjustment bracket 33, the annular portion 511 is against the strut steel pipe 4, and the extension portion 512 is inserted into the fixing plate 521 and fixed on the fixing plate 521.

[0054] The fixing assembly 5 is used to fix the supporting steel pipe 4 and the angle adjustment bracket 33. Since the supporting steel pipe 4 is against the wedge-shaped steel support 321 of the support plate 322, the supporting steel pipe 4 and the angle adjustment slot are fixed by the fixing assembly 5 to assist in fixing the supporting steel pipe 4.

[0055] The present invention sets a plurality of gears in the angle adjustment bracket 33 structure of the inclined brace inclination adapter support top device, and selects a suitable gear according to the inclination difference of the two surfaces of the corbel support, so that the top surface of the inclined brace steel pipe 4 is completely in contact with the support surface of the support plate 322 component, so as to achieve the purpose of giving full play to the top support function of the inclined brace, ensure the construction quality of the inclined brace support structure, and avoid the extension of the construction period caused by design changes and redoing.

[0056] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for supporting the top of an inclined brace with an inclination angle adaptation, applied to an inclined brace structure, the inclined brace structure comprising: A corbel support fixed on the bottom of the foundation pit or the waist beam of the foundation pit wall, and a bracing steel pipe with both ends respectively fixed on the corbel support, characterized in that the device is installed between the corbel support and the bracing steel pipe, and comprises: a base plate, an angle adjustment bracket and a supporting member; The base plate is fixed on the corbel support, the angle adjustment bracket and the support member are respectively hinged on both sides of the base plate, the support member rotates relative to the base plate, and the edge of the support member away from the base plate is fixed on the angle adjustment bracket, the angle adjustment bracket increases or decreases the inclination angle of the support member relative to the base plate, and the end face of the caster steel pipe is attached to the support member; The angle adjustment bracket comprises: a rotating shaft, a screw rod, a nut and a bracket bar; the rotating shaft is arranged in the base plate and exposed at both sides of the base plate; the screw rod is arranged in the support member and is located at a side edge of the support member away from the base plate, and both ends of the screw rod are exposed at both sides of the support member; the bracket bar is installed on both sides of the base plate through the rotating shaft, and the support member is fixed to the bracket bar through the screw rod; the nut is fixed to the screw rod to relatively fix the bracket bar and the support member; The support bar is provided with a plurality of grooves, and the screw rod is fixed in the grooves; the grooves are arranged along the edge of the support bar, and the grooves are inclined toward one end of the rotating shaft; The support member comprises a support plate, a hinge shaft is arranged on a side plate edge of the support plate close to the base plate, and a hinge hole is arranged on the base plate; the hinge shaft is inserted into the hinge hole to make the support plate rotate relative to the base plate; The device also includes a fixing assembly, which includes an annular locking member and a fixed shaft member; the annular locking member includes a semicircular annular portion and extensions arranged at both ends of the annular portion, the fixed shaft member includes a fixing plate and shaft ends at both ends of the fixing plate, the shaft ends are fixed to the angle adjustment bracket, the annular portion is against the caster steel pipe, and the extension is inserted into the fixing plate and fixed to the fixing plate; The supporting member comprises a wedge-shaped steel support arranged on the supporting plate; the wedge-shaped steel support is perpendicular to the supporting plate and fixed on a side of the supporting plate away from the base plate, and the caster steel pipe is fixed relative to the supporting plate through the wedge-shaped steel support; The support plate is provided with lugs, and both ends of the hinge shaft are fixed on the lugs; The support plate is provided with a plurality of fixing holes on one side facing the caster support steel pipe, and the fixing holes are arranged between the wedge-shaped steel support and the hinge shaft. Bolts are fixed in the fixing holes and abut against the caster support steel pipe, so that the caster support steel pipe is fixed between the bolts and the wedge-shaped steel support.

2. The inclined support angle adaptation support device according to claim 1, characterized in that: The base plate comprises: a base steel plate and embedded steel bars; The base steel plate is installed against a surface of the corbel support facing the support steel pipe, and the implanted steel bars pass through the base steel plate and are embedded in the corbel support.

3. The inclined support angle adaptation support device according to claim 1, characterized in that: The wedge-shaped steel support includes a vertical portion and an inclined portion. A plurality of end reinforcing ribs are arranged on the caster steel pipe. The inclined portion is close to the surface of the caster steel pipe and inserted between adjacent end reinforcing ribs.

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