Tool type joint structure for connecting steel pipe inclined strut and top beam of foundation pit

Abstract

The utility model relates to a tool type connector structure for connecting a foundation pit steel pipe inclined strut and a top beam, and belongs to the technical field of deep foundation pit supporting structures. The supporting side face is vertically arranged on the top beam, the embedded steel plate is embedded in the top beam and laid on the supporting inclined face, the connector base is installed on the embedded steel plate, and the inclined strut flange is installed at the top end of the steel pipe inclined strut. The rotary joint is installed on the inclined strut flange and hinged to the joint base, and the rotary pin shaft is connected with the joint base and the rotary joint in a rotary mode. And the axis of the rotating pin shaft is horizontally arranged. According to the construction method, the erecting difficulty of the crown beam formwork is reduced, and erecting of the crown beam formwork and concrete pouring forming of the crown beam are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deep foundation pit support structure, in particular to a tool type joint structure for connecting a foundation pit steel pipe inclined strut and a crown beam. BACKGROUND

[0002] With the rapid development of underground space construction projects, various types of foundation pit support structures have also been innovated and developed. The foundation pit steel pipe inclined strut support structure is a common foundation pit support structure. The foundation pit steel pipe inclined strut support structure usually includes a row pile structure arranged at the edge of the foundation pit, a crown beam arranged at the top of the row pile structure, and a steel pipe inclined strut arranged inside the foundation pit.

[0003] A joint structure is provided between the steel pipe inclined strut and the crown beam. The existing joint structure for connecting the foundation pit steel pipe inclined strut and the crown beam includes an inner inclined surface provided on the crown beam, a pre-embedded steel plate laid on the inner inclined surface and partially embedded in the crown beam, and an inclined strut flange provided on the top of the steel pipe inclined strut and connected and fixed with the pre-embedded steel plate. Among them, the top of the steel pipe inclined strut is usually provided with a preloading device (hydraulic jack) for adjusting the support force and length error value between the crown beam and the steel pipe inclined strut. Among them, since the steel pipe inclined strut is arranged obliquely, the inner inclined surface of the crown beam and the pre-embedded steel plate also need to be arranged correspondingly with the steel pipe inclined strut, that is, the inner inclined surface and the pre-embedded steel plate are both perpendicular to the axis of the steel pipe inclined strut, making it difficult to set up the crown beam formwork. CONTENT OF THE UTILITY MODEL

[0004] In order to reduce the difficulty of setting up the crown beam formwork, the present application provides a tool type joint structure for connecting a foundation pit steel pipe inclined strut and a crown beam.

[0005] The tool type joint structure for connecting a foundation pit steel pipe inclined strut and a crown beam provided by the present application adopts the following technical solution:

[0006] A tool type joint structure for connecting a foundation pit steel pipe inclined strut and a crown beam, comprising a support side surface arranged on the crown beam and arranged vertically, a pre-embedded steel plate pre-embedded in the crown beam and laid on the support inclined surface, a joint seat mounted on the pre-embedded steel plate, an inclined strut flange mounted on the top end of the steel pipe inclined strut, a rotary joint mounted on the inclined strut flange and hinged to the joint seat, and a rotary pin shaft rotatingly connecting the joint seat and the rotary joint; the axis of the rotary pin shaft is horizontally arranged.

[0007] By adopting the above technical solution, the top end of the steel pipe inclined strut is mounted on the support side surface of the crown beam through the hinged cooperation of the joint seat and the rotary joint, so that the support side surface of the crown beam can be in a vertical state. The support side surface of the crown beam is in a vertical state, thereby facilitating the construction of the crown beam formwork and the concrete pouring and molding of the crown beam.

[0008] Optionally, the joint base comprises a joint bottom plate mounted on the embedded steel plate and two joint vertical plates mounted on the joint bottom plate and arranged vertically opposite to each other; the two joint vertical plates have first pin shaft holes arranged opposite to each other and used for arranging the rotating pin shaft; the rotating joint comprises a joint flange arranged corresponding to the diagonal brace flange and a terminal tongue plate mounted on the joint flange and arranged corresponding to the joint vertical plate; the terminal tongue plate is attached to one side of the corresponding joint vertical plate; the terminal tongue plate has second pin shaft holes arranged opposite to each other and used for arranging the rotating pin shaft.

[0009] By adopting the above technical scheme, the specific structure of the joint base and the rotating joint is disclosed, the joint base has two joint vertical plates and the joint vertical plates have first pin shaft holes, the rotating joint has two terminal tongue plates and the terminal tongue plates have second pin shaft holes, so that the structural stability of the hinged connection between the joint base and the rotating joint is relatively ideal, and the installation and disassembly are relatively convenient.

[0010] Optionally, the terminal tongue plate is attached to the outer side surface of the joint vertical plate.

[0011] By adopting the above technical scheme, the terminal tongue plate is attached to the outer side surface of the joint vertical plate, which can limit the joint base and the rotating joint in the axial direction of the rotating pin shaft, so that the two are not easy to move in the axial direction of the rotating pin shaft, which helps to improve the connection strength and stability of the hinged connection of the joint base and the rotating joint.

[0012] Optionally, the rotating pin shaft comprises a rotating shaft part, a pin shaft cap arranged at one end of the rotating shaft part, and a pin shaft plug radially penetrating the other end of the rotating shaft part.

[0013] By adopting the above technical scheme, the rotating shaft part in the rotating pin shaft is supported on the two joint vertical plates and the two terminal tongue plates, the pin shaft cap limits one end of the rotating pin shaft, and the pin shaft plug limits the other end of the rotating pin shaft, so that the rotating pin shaft is locked on the joint base and the rotating joint, reducing the probability of the rotating pin shaft falling off from the joint base and the rotating joint, thereby further improving the connection strength of the hinged connection of the joint base and the rotating joint.

[0014] Optionally, the joint base is further provided with a joint horizontal plate connecting the two joint vertical plates, and the joint horizontal plate is arranged perpendicular to the joint bottom plate.

[0015] By adopting the above technical scheme, the joint horizontal plate is supported on the two joint vertical plates, which improves the structural strength of the joint base as a whole and reduces the probability of deformation of the joint vertical plate during use of the joint base.

[0016] Optionally, the embedded steel plate is fixedly provided with an embedded anchor bolt having one end embedded in the corbel and the other end extending to the outside of the corbel; the embedded anchor bolt is perpendicular to the support side surface; the joint base plate has a mounting through hole corresponding to the embedded anchor bolt; and the end of the embedded anchor bolt is further provided with an anchor bolt nut for locking the joint base plate to the side surface of the embedded steel plate.

[0017] By adopting the technical scheme, the joint base is mounted on the embedded steel plate. The joint base plate is locked on the embedded steel plate through cooperation of the embedded anchor bolt and the anchor bolt nut, and the structural strength is ideal, so that the joint base is not easy to fall off from the embedded steel plate, and the joint base is convenient to disassemble from the embedded steel plate.

[0018] Optionally, the rotary joint is further provided with a tongue plate rib plate at the connection between the joint flange and the end tongue plate.

[0019] By adopting the technical scheme, the tongue plate rib plate can improve the structural strength of the joint flange and the end tongue plate, and help to reduce the probability of bending and breaking of the end tongue plate.

[0020] Optionally, the connection between the diagonal bracing flange and the steel pipe diagonal bracing is circumferentially spaced with a flange rib plate.

[0021] By adopting the technical scheme, the flange rib plate can improve the structural strength between the diagonal bracing flange and the steel pipe diagonal bracing, and help to reduce the probability of bending and breaking of the outer edge of the diagonal bracing flange.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. A tool-type joint structure for connecting a foundation pit steel pipe diagonal bracing and a corbel, comprising a vertically arranged support side surface, an embedded steel plate, a joint base, a diagonal bracing flange, a rotary joint and a rotary pin shaft, achieving connection of the steel pipe diagonal bracing and the corbel, and making the support side surface of the corbel vertically arranged, which is helpful for construction of the corbel formwork and concrete pouring of the corbel, and facilitates installation and disassembly of the steel pipe diagonal bracing and the corbel;

[0024] 2. The rotary pin shaft comprises a rotary shaft part, a pin shaft cap and a pin shaft bolt, so that the rotary pin shaft is not easy to fall off from the joint base and the rotary joint, and the connection strength of the hinged cooperation of the joint base and the rotary joint is improved;

[0025] 3. The joint base comprises a joint base plate, a joint horizontal plate and two joint vertical plates, so that the structural strength of the joint base is ideal, and the two joint vertical plates are not easy to bend and break in the use process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a cooperation schematic view of the steel pipe diagonal bracing and the corbel in the embodiments of the present application.

[0027] Figure 2 This is a schematic diagram of the tool-type joint structure connecting the foundation pit steel pipe diagonal brace and the cap beam in the embodiments of this application.

[0028] Figure 3 This is a schematic diagram showing the fit between the steel pipe brace, the brace flange, and the rotary joint in the embodiments of this application.

[0029] Figure 4 This is a cross-sectional schematic diagram of the tool-type joint structure connecting the foundation pit steel pipe diagonal brace and the cap beam in the embodiments of this application.

[0030] Figure 5 This is a schematic diagram showing the fit between the connector seat, the pre-embedded anchor bolt, and the anchor bolt nut in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Steel pipe diagonal brace; 11. Reinforced section; 12. Composite section; 13. Inner core pile section; 2. Crown beam; 21. Support side; 3. Embedded steel plate; 31. Embedded anchor bolt; 32. Anchor bolt nut; 4. Joint seat; 41. Joint bottom plate; 411. Installation through hole; 42. Joint vertical plate; 43. First pin hole; 44. Joint horizontal plate; 5. Diagonal brace flange; 51. Flange rib; 6. Rotary joint; 61. Joint flange; 62. End tongue plate; 63. Second pin hole; 64. Tongue plate rib; 7. Rotary pin; 71. Rotary shaft; 72. Pin cap; 73. Pin insertion pin. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0033] Reference Figure 1 This application discloses a tool-type joint structure for connecting a steel pipe diagonal brace 1 to a capping beam 2 of a foundation pit, used to connect the steel pipe diagonal brace 1 and the capping beam 2 of the support piles. The steel pipe diagonal brace 1 is inclinedly arranged in the foundation pit. From bottom to top, the steel pipe diagonal brace 1 includes a reinforcement section 11, a composite section 12, and an inner core pile section 13. The reinforcement section 11 and the composite section 12 are both located underground, while the inner core pile end is exposed above ground and used for docking with the capping beam 2.

[0034] Reference Figure 1 and Figure 2 A tool-type joint structure for connecting a steel pipe diagonal brace in a foundation pit to a capping beam includes a support side 21 arranged vertically on the capping beam 2, an embedded steel plate 3 embedded in the capping beam 2 and laid on the support slope, a joint seat 4 installed on the embedded steel plate 3, a diagonal brace flange 5 installed on the top of the steel pipe diagonal brace 1, a rotary joint 6 installed on the diagonal brace flange 5 and hinged to the joint seat 4, and a rotary pin 7 that rotatably connects the joint seat 4 and the rotary joint 6.

[0035] ReferenceFigure 3 The brace flange 5 is fixedly installed at the top end of the steel pipe brace 1. In order to improve the structural strength of the brace flange 5 on the steel pipe brace 1, flange ribs 51 are arranged at the joint between the brace flange 5 and the steel pipe brace 1. In this embodiment, eight flange ribs 51 are arranged between the brace flange 5 and the steel pipe brace 1, and the eight flange ribs 51 are evenly spaced circumferentially. The brace flange 5 is provided with a first through hole between two adjacent flange ribs 51.

[0036] Referring to Figure 3 and Figure 4 The rotary joint 6 is installed on the brace flange 5. The rotary joint 6 includes a joint flange 61 arranged corresponding to the brace flange 5, and two end tongue plates 62 vertically installed on the joint flange 61 and oppositely arranged.

[0037] Referring to Figure 3 and Figure 4 A second through hole corresponding to the first through hole of the brace flange 5 is provided through the joint flange 61. The joint flange 61 and the brace flange 5 are fixedly connected by bolts and nuts. The bolts are inserted into the second through hole of the joint flange 61 and the first through hole of the brace flange 5 from top to bottom, and the joint flange 61 and the brace flange 5 are locked by the nuts.

[0038] Referring to Figure 3 and Figure 4 The width of the end tongue plate 62 gradually decreases in the direction away from the joint flange 61, so that the whole end tongue plate 62 presents a conical head shape. The end tongue plate 62 is provided with a second pin shaft hole 63 for arranging a rotary pin shaft 7. In order to improve the connection strength between the end tongue plate 62 and the joint flange 61, the rotary joint 6 is provided with a tongue plate rib 64 at the joint between the joint flange 61 and the end tongue plate 62. The tongue plate rib 64 is arranged on the outer side of the end tongue plate 62. In this embodiment, each end tongue plate 62 is provided with three tongue plate ribs 64, and the three tongue plate ribs 64 are arranged in the width direction of the end tongue plate 62.

[0039] Referring to Figure 2 and Figure 4 The crown beam 2 is in the shape of a rectangular parallelepiped. The support side 21 of the crown beam 2 is located on the side close to the steel pipe brace 1. Because the crown beam 2 is in the shape of a rectangular parallelepiped, the formwork construction of the crown beam 2 is more convenient, thereby facilitating the pouring construction of the crown beam 2. The embedded steel plate 3 is embedded in the crown beam 2, and the outer side of the embedded steel plate 3 is flush with the support side 21. The embedded steel plate 3 is fixedly installed with an embedded anchor bolt 31 embedded in the crown beam 2 and extending to the outside of the crown beam 2. The embedded anchor bolt 31 is arranged perpendicular to the outer side of the embedded steel plate 3. The embedded steel plate 3 is also provided with a through hole for the embedded anchor bolt 31 to pass through, and the embedded anchor bolt 31 is welded and fixed to the embedded steel plate 3.

[0040] Referring to Figure 4 and Figure 5 In this embodiment, the embedded steel plate 3 is provided with a row of embedded anchors 31 on both sides, and two embedded anchors 31 are also arranged in the middle region of the two rows of embedded anchors 31.

[0041] Referring to Figure 2 and Figure 4 The joint base 4 is installed on the outer side of the embedded steel plate 3. The joint base 4 includes a joint bottom plate 41 installed on the embedded steel plate 3 and two joint vertical plates 42 installed on the joint bottom plate 41 and vertically opposite to each other. The joint bottom plate 41 is provided with a mounting through hole 411 for the embedded anchor 31 to pass through, and the end of the embedded anchor 31 is also provided with an anchor nut 32 for locking the joint bottom plate 41 to the outer side of the embedded steel plate 3. The joint bottom plate 41 and the embedded steel plate 3 are fixedly connected through the embedded anchor 31 and the anchor nut 32, which facilitates the subsequent disassembly of the joint bottom plate 41 and the embedded steel plate 3.

[0042] Referring to Figure 2 and Figure 4 The two joint vertical plates 42 have a first pin shaft hole 43 opposite to each other and used for arranging the rotating pin shaft 7. The joint vertical plate 42 corresponds to the end tongue plate 62 one by one and is attached to the inner side of the corresponding end tongue plate 62, that is, the end tongue plate 62 is attached to the outer side of the corresponding joint vertical plate 42. In order to improve the structural strength of the joint vertical plate 42, the joint base 4 is further provided with a joint horizontal plate 44 connecting the two joint vertical plates 42 on the joint horizontal plate 44, and the joint horizontal plate 44 is arranged perpendicular to the joint bottom plate 41.

[0043] Referring to Figure 4 When the joint base 4 and the rotating joint 6 are hinged, the first pin shaft hole 43 of the joint vertical plate 42 and the second pin shaft hole 63 of the end tongue plate 62 are opposite to each other. The axis of the rotating pin shaft 7 is horizontally arranged, and the rotating pin shaft 7 includes a rotating shaft part 71, a pin shaft cap 72 arranged at one end of the rotating shaft part 71, and a pin shaft plug 73 radially penetrating the other end part of the rotating shaft part 71. Among them, the rotating shaft part 71 of the rotating pin shaft 7 is arranged on the first pin shaft hole 43 and the second pin shaft hole 63, and the pin shaft cap 72 abuts against the outer side of one of the end tongue plates 62, and the pin shaft plug 73 abuts against the outer side of the other end tongue plate 62, so as to realize the connection of the rotating pin shaft 7 at the joint base 4 and the rotating joint 6.

[0044] In combination Figures 1 to 5The implementation principle of the tool type joint structure for connecting the foundation pit steel pipe inclined support and the crown beam is as follows: the inclined support flange 5 is arranged at the top of the steel pipe inclined support 1, the rotary joint 6 is installed on the inclined support flange 5, the outer side of the crown beam 2 is arranged as the vertically arranged support side 21, the embedded steel plate 3 is laid at the support side 21, and the joint seat 4 is installed on the embedded steel plate 3, wherein the joint seat 4 and the rotary joint 6 are hingedly matched through the rotary pin shaft 7, so that the connection of the steel pipe inclined support 1 and the crown beam 2 is realized, the inner inclined surface does not need to be arranged on the outer side of the crown beam 2, the erection difficulty of the crown beam 2 formwork is reduced, and the erection of the crown beam 2 formwork and the pouring and forming of the crown beam 2 are facilitated.

[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tool joint structure for connecting a steel pipe strutting of a foundation pit and a corbel, characterized by, The support side (21) is arranged vertically on the crown beam (2), the embedded steel plate (3) is embedded in the crown beam (2) and laid on the support side (21), the joint base (4) is arranged on the embedded steel plate (3), the bracing flange (5) is arranged on the top end of the steel pipe bracing (1), the rotary joint (6) is arranged on the bracing flange (5) and is hinged to the joint base (4), and the rotary pin shaft (7) is arranged to connect the joint base (4) and the rotary joint (6).

2. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 1, characterized in that, The joint base (4) comprises a joint bottom plate (41) arranged on the embedded steel plate (3) and two joint vertical plates (42) arranged vertically opposite to each other on the joint bottom plate (41), the two joint vertical plates (42) are provided with first pin shaft holes (43) arranged opposite to each other and used for arranging the rotary pin shaft (7), the rotary joint (6) comprises a joint flange (61) arranged corresponding to the bracing flange (5) and an end tongue plate (62) arranged on the joint flange (61) and corresponding to the joint vertical plate (42), the end tongue plate (62) is arranged on one side of the corresponding joint vertical plate (42), and the end tongue plate (62) is provided with second pin shaft holes (63) arranged opposite to each other and used for arranging the rotary pin shaft (7).

3. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 2, characterized in that, The end tongue plate (62) is arranged on the outer side of the joint vertical plate (42).

4. The tool joint structure of a foundation steel pipe batter with a corbel connection according to claim 2, characterized in that, The rotary pin shaft (7) comprises a rotary shaft part (71), a pin shaft cap (72) arranged on one end of the rotary shaft part (71) and a pin shaft plug (73) radially penetrating the other end of the rotary shaft part (71).

5. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 2, characterized in that, The joint base (4) is further provided with a joint horizontal plate (44) connecting the two joint vertical plates (42), and the joint horizontal plate (44) is arranged perpendicularly to the joint bottom plate (41).

6. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 2, characterized in that, The embedded anchor bolt (31) is arranged on one end of the embedded steel plate (3) and extends to the outside of the crown beam (2), the embedded anchor bolt (31) is arranged perpendicularly to the support side (21), the joint bottom plate (41) is provided with an installation through hole (411) corresponding to the embedded anchor bolt (31), and the end of the embedded anchor bolt (31) is further provided with an anchor bolt nut (32) for locking the joint bottom plate (41) to the side of the embedded steel plate (3).

7. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 2, characterized in that, The rotary joint (6) is further provided with a tongue plate rib plate (64) at the joint between the joint flange (61) and the end tongue plate (62).

8. A tool joint structure of a connection between a bracing strut and a corbel of a foundation steel pipe according to claim 1, characterized in that, The bracing flange (5) and the steel pipe bracing (1) are circumferentially and spacedly provided with flange rib plates (51).

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