Subway station haunch angle shaping and supporting device

Abstract

The utility model relates to the field of subway construction equipment, in particular to a subway station haunch angle shaping and supporting device which comprises a haunch angle inserting piece arranged between a side wall and a bottom plate longitudinal beam haunch angle and an inclined strut assembly connected with the side wall and the haunch angle inserting piece. The haunch inserting piece comprises a sleeve and a haunch inserting plate, the sleeve is connected with a steel bar embedded in the side wall in a sleeved mode, one end of the haunch inserting plate is connected to the side wall of the sleeve, and the other end of the haunch inserting plate abuts against the bottom plate longitudinal beam. The inclined strut assembly comprises a connecting rod and a supporting rod, one end of the connecting rod is connected with a foundation bolt pre-buried at the haunch of the side wall and the longitudinal beam of the bottom plate through a connecting nut arranged in the haunch inserting plate, and the other end of the connecting rod is connected with the supporting rod through a dish-shaped nut. The technical effect of shaping and supporting the subway haunch angle is achieved through the haunch angle inserting plate, and the haunch angle inserting plate is further reinforced, supported and fixed through the connecting rod and the supporting rod by adjusting the butterfly nut. The device can solve the technical problem that the subway haunch sinks, can be used in a turnover mode, and saves cost.

Description

Technical Field

[0001] The utility model relates to the field of subway construction equipment, in particular to a subway station axil angle shaping support device. Background Art

[0002] Subway stations are hubs of urban rail transit and distribution points for ground passenger flow. They connect ground and underground passenger transport functions, so their safety and stability are of utmost importance. At present, open-cut subway station design schemes with obvious advantages are generally adopted at home and abroad. The main structure of the station generally adopts cast-in-place reinforced concrete box-type frame structure. In order to increase the overall structural stability of the box-type frame, it is generally necessary to set armpits at the junction of slabs and walls, the junction of beams and slabs, and corners, and install angle braces at the armpits to improve the stability of the structure. However, during construction, due to the large volume and weight of the angle braces, the positioning and connection of the armpit angle braces are difficult, and it is necessary to pre-embed lifting rings at the construction site to install the angle braces, which increases the workload and prolongs the construction period.

[0003] Among them, the open excavation method is more widely used. After the construction of the bottom plate and side walls of the subway station is completed, it is necessary to erect formwork to carry out concrete construction on the top plate and the corners at the top plate. However, since the corners are inclined relative to the top plate, the corner formwork is difficult to be reliably fixed, resulting in the corner formwork easily sinking during the pouring of the corner concrete, which has an adverse effect on the quality of subway construction.

[0004] After searching, the Chinese patent with application number 201920965443.2 discloses a large formwork device for movable side walls of subway stations with high armpit angles, comprising: a base plate; a plurality of anchor bolts, a plurality of the anchor bolts are linearly pre-embedded in the base plate; and the anchor bolts form an angle of 45° with the base plate; a first I-beam, the first I-beam is arranged on the top of the base plate; a second I-beam, the second I-beam is vertically welded to the top of the first I-beam; a mobile platform, the mobile platform is arranged on the top of the second I-beam; a bracket, the bracket is installed on the top of the mobile platform; a steel panel, the steel panel is fixedly installed on the bracket; a winch, the winch is arranged on the base plate.

[0005] However, the large movable side wall formwork at the armpit corner is an assembled integral device, which needs to be moved by a winch for mobile and turnover use. Its structure is complex and difficult to move, thus reducing the efficiency of concrete construction at the armpit corner of the subway station. Utility Model Content

[0006] In the prior art, the large movable side wall formwork at the armpit corner is an integral device with a complex structure, which is difficult to move and circulate during the concrete pouring construction at the armpit corner of the subway station, thereby reducing the construction efficiency.

[0007] Technical idea: This application provides a new type of subway station armpit corner shaping device. Starting from the problems of the existing technology, on the one hand, the shaping support of the subway armpit corner is achieved through a triangular diagonal brace stabilizing structure, and on the other hand, the turnover use of the device is achieved through a detachable connection relationship.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A subway station armpit shaping support device comprises an armpit plug-in arranged between a side wall and an armpit corner of a bottom plate longitudinal beam, and a diagonal brace assembly connecting the side wall and the armpit plug-in.

[0010] In the above technical solution, a triangular diagonal bracing stabilizing structure is formed between the armpit corner plug-in, the side wall, the bottom plate longitudinal beam and the diagonal bracing assembly.

[0011] Furthermore, the armpit corner plug-in includes a sleeve and an armpit corner plug-in plate, the sleeve is sleeved with the steel bar embedded in the side wall, one end of the armpit corner plug-in plate is connected to the side wall of the sleeve, and the other end is abutted against the bottom plate longitudinal beam.

[0012] It should be noted that the sleeve is detachably connected to the steel bar and can be disassembled after the construction is completed for turnover use.

[0013] In detail, the armpit corner insert plate is a special-shaped component composed of a vertical plate, an inclined plate and a horizontal plate.

[0014] Furthermore, the diagonal brace assembly includes a connecting rod and a supporting rod, one end of the connecting rod is connected to the anchor bolts embedded in the axillary corners of the side wall and the bottom plate longitudinal beam through a connecting nut arranged in the axillary corner plug plate, and the other end is connected to the supporting rod through a disc nut.

[0015] Specifically, one end of the anchor bolt is a hook-shaped structure, and the other end is provided with an external thread matching the internal thread of the connecting nut.

[0016] According to a further solution, stirrups and stress-bearing bars are provided at the bottom end of the axilla corner insert plate to support lateral displacement.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model achieves the technical effect of shaping and supporting the armpit corners between the side wall and the bottom plate longitudinal beam by providing a sleeve that is sleeved with the steel bars pre-buried in the side wall and an armpit corner plug plate connecting the sleeve.

[0019] 2. The utility model provides a support rod for auxiliary support of the armpit corner plug plate, and one end is connected to the anchor bolt embedded in the armpit corner of the side wall and the bottom plate longitudinal beam through a connecting nut provided in the armpit corner plug plate, and the other end is connected to the connecting rod with the support rod through a butterfly nut. By rotating the connecting nut, the locking force between the anchor bolt and the armpit corner plug plate can be adjusted, thereby achieving the technical effect of improving the supporting force of the armpit corner plug plate.

[0020] 3. The utility model forms a triangular diagonal bracing structure by arranging the armpit insert plates, side walls, bottom plate longitudinal beams and support rods, thereby improving the supporting stability of the armpit corners of the subway station.

[0021] 4. The utility model improves the stability of the axillary corner insert plate by arranging stirrups and stress-bearing bars at the bottom end of the axillary corner insert plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the armpit corner plug-in of the utility model;

[0024] Figure 2 It is a schematic longitudinal section diagram of the overall structure of the utility model;

[0025] Figure 3 For this utility model Figure 3 The enlarged structure diagram of the middle A part;

[0026] Figure 4 This is a schematic diagram of the connection relationship between the stirrups and the force-bearing bars of the utility model;

[0027] In the figure: 1. side wall; 2. bottom plate longitudinal beam; 3. armpit plug; 4. diagonal brace assembly; 5. sleeve; 6. armpit plug; 7. steel bar; 8. connecting rod; 9. support rod; 10. connecting nut; 11. anchor bolt; 12. butterfly nut; 13. stirrup; 14. tension bar. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The inventors have discovered that when an open-cut method is used for the construction of a subway station, after the construction of the bottom slab and side walls is completed, it is necessary to erect formwork to carry out concrete construction on the top slab and the corners at the top slab. However, since the corners are inclined relative to the top slab, the corner formwork is difficult to be reliably fixed, resulting in the corner formwork easily sinking during the pouring of the corner concrete.

[0032] Based on the above findings, the present application provides a subway station armpit corner shaping support device, including an armpit corner plug-in 3 arranged between the side wall 1 and the armpit corner of the bottom plate longitudinal beam 2, and a diagonal brace assembly 4 connecting the side wall 1 and the armpit corner plug-in 3.

[0033] Example

[0034] Reference Figure 1-4 The present application provides a subway station armpit corner shaping support device, comprising an armpit corner plug-in 3 arranged between the side wall 1 and the bottom plate longitudinal beam 2, and a diagonal brace assembly 4 connecting the side wall 1 and the armpit corner plug-in 3. The armpit corner of the side wall 1 and the bottom plate longitudinal beam 2 is shaped and supported by the armpit corner plug-in 3, and the diagonal brace assembly 4 is further used to auxiliary support and fix the armpit corner plug-in 3.

[0035] In the above technical solution, a triangular diagonal bracing stabilizing structure is formed between the armpit corner plug-in 3, the side wall 1, the bottom plate longitudinal beam 2 and the diagonal bracing assembly 4, so that the support at the armpit corner of the subway station is more stable.

[0036] Furthermore, the armpit corner plug-in 3 includes a sleeve 5 and an armpit corner plug-in plate 6. The sleeve 5 is sleeved with the steel bar 7 embedded in the side wall 1. One end of the armpit corner plug-in plate 6 is connected to the side wall of the sleeve 5, and the other end is abutted against the bottom plate longitudinal beam 2.

[0037] As an example, one end of the armpit corner plug plate 6 is slidably connected to the steel bar 7 embedded in the side wall 1 through the sleeve 5, but it is not limited to this connection. For example, it can also be a hinge connection.

[0038] In the present application, in order to better shape and support the station's armpit corners, on the one hand, the structure of the armpit corner plug plate 6 is set to be three parts, which are special-shaped components composed of vertical plates, inclined plates and horizontal plates. The setting of this structure makes the armpit corner plug plate 6 match the station's armpit corners. On the other hand, the armpit corner plug plate 6 is made of steel and is an integrated structure.

[0039] As an example, the special-shaped component is a trapezoidal structure, specifically an isosceles trapezoidal structure, and the length of the horizontal plate is shorter than that of the vertical plate.

[0040] Furthermore, the diagonal brace assembly 4 includes a connecting rod 8 and a support rod 9, one end of the connecting rod 8 is connected to an anchor bolt 11 embedded in the axillary corner of the side wall 1 and the bottom plate longitudinal beam 2 through a connecting nut 10 arranged in the axillary corner plug plate 6, and the other end is abutted against the support rod 9 through a fixing member.

[0041] Specifically, the fixing piece is a butterfly nut 12 .

[0042] In actual application, during construction and pouring, the anchor bolts 11 are pre-buried in the axillar corners of the side wall 1 and the bottom plate longitudinal beam 2, and the butterfly nut 12 is screwed to adjust the locking force between the anchor bolts 11 and the axillar corner plug plate 6 and the support rod 9.

[0043] Preferably, stirrups 13 and stress-bearing bars 14 are provided at the bottom end of the axilla corner insert plate 6 to support lateral displacement, so that the overall structural support is more stable.

[0044] Specific application cases:

[0045] Taking the main structure construction of Shilipu West Street Station in the sixth work area of ​​the first phase of Shijiazhuang Urban Rail Transit Line 4 as an example, the application of this application in the construction process is described in detail.

[0046] Shilipu West Street Station is located in Shijiazhuang City, Hebei Province, on the north side of Mianhe Road at the intersection of Mianhe Road and Jinyi Street. It is a two-story underground station with a total length of 247m, a standard section width of 19.7m, an effective platform width of 11m, a center mileage track surface buried depth of 15.242m, and the main foundation pit retaining structure adopts bored cast-in-place piles and steel supports. The main foundation pit is about 246.699 to 248.51m long, the standard section is about 16.78 to 17.8m deep, and about 19.9 to 20.5m wide. The shield shaft at the small mileage end is 18.22m deep and 23.8m wide; the shield shaft section at the large mileage end is 19.4m deep and 24.82m wide. The open-cut method is used for construction, with a total of 3 entrances and exits and 2 sets of wind shelters.

[0047] The longitudinal slope of the station from west to east is 0.2% at k22+835.377~k23+055.544, and the longitudinal slope from west to east is 2.4% at k23+055.544~k23+083.891.

[0048] 1) Station net width: standard section net width is 19.7m and 20.3m, and the net width at the end well is 23.6m;

[0049] 2) Station clearance: standard section height 13.581m, clearance of the second underground floor 6.431m, clearance of the first underground floor 5.05m;

[0050] 3) Side wall thickness: 700mm;

[0051] 4) Bottom plate and bottom longitudinal beam: bottom plate thickness 900mm, bottom longitudinal beam (b×h) 1200×1800mm;

[0052] 5) Middle plate and middle longitudinal beam: The thickness of the middle plate is 400mm, and the middle longitudinal beam (b×h) is 900×1000mm;

[0053] 6) Top plate and top longitudinal beam: top plate thickness 800mm, top longitudinal beam (b×h) 1200×1600mm;

[0054] 7) Cross-sectional dimensions of frame columns and concealed columns (mm)

[0055] Frame column: 700×1000, 800×1200, 600×1400, 700×1100;

[0056] Pilaster: 1000×1200;

[0057] Dark column: 600×700, 700×2650, 700×2550, 700×900, 700×1200.

[0058] Since the project adopts the open-cut construction method, after the construction of the base plate and side walls of the subway station is completed, it is necessary to erect formwork to carry out concrete construction on the top plate and the corners at the top plate. However, since the corners are inclined relative to the top plate, the corner formwork is difficult to be reliably fixed, resulting in the corner formwork easily sinking during the pouring of the corner concrete, which has an adverse effect on the quality of the subway construction.

[0059] Based on the above reasons, the present application proposes a subway station corner shaping support device, which is used to solve the technical problem of the corner formwork sinking. During the specific operation, before the corner shaping casting is carried out, the steel bars 7 are pre-embedded on the side wall 1, and the anchor bolts 11 are pre-embedded at the corners of the side wall 1 and the bottom plate longitudinal beam 2. Then, the sleeve 5 is used to be sleeved on the pre-embedded steel bars 7, so that the corner plug plate 6 is supported between the side wall 1 and the bottom plate longitudinal beam 2.

[0060] The connecting rod 8 is further threadedly connected to the pre-buried anchor bolt 11 through a connecting nut 10 arranged in the axillary corner insert plate 6. Furthermore, the support rod 9 is clamped above the axillary corner insert plate 6 through a butterfly nut 12 on the connecting rod 8.

[0061] In order to further support the axilla corner insert plate 6, stirrups 13 and force bars 14 are provided at the bottom end of the axilla corner insert plate 6 for supporting lateral displacement.

[0062] After the overall installation is completed, the locking force between the anchor bolt 11 and the axillar plug plate 6 and the support rod 9 is adjusted by screwing the butterfly nut 12. After the overall support force is adjusted, pouring can be carried out. After pouring is completed, when the concrete is solidified, the connecting nut 10 is screwed off the anchor bolt 11 and the connecting rod 8. At this time, the locking state between the axillar plug plate 6 and the support rod 9 and the side wall 1 is released, and the axillar plug plate 6 can be removed from the side wall 1. After the removal is completed, the anchor bolt 11 will remain in the concrete, and the other removed parts can be transferred to the next flow section cycle for use.

[0063] In summary, although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A subway station armpit angle shaping support device, characterized in that: It comprises an axilla corner plug-in (3) arranged between the side wall (1) and the axilla corner of the bottom plate longitudinal beam (2), and a diagonal brace assembly (4) connecting the side wall (1) and the axilla corner plug-in (3); The axillar corner plug-in unit (3) comprises a sleeve (5) and an axillar corner plug-in unit (6); the sleeve (5) is sleeved with a steel bar (7) pre-buried in the side wall (1); one end of the axillar corner plug-in unit (6) is connected to the side wall of the sleeve (5), and the other end is abutted against the bottom plate longitudinal beam (2); The diagonal brace assembly (4) comprises a connecting rod (8) and a supporting rod (9); one end of the connecting rod (8) is connected to an anchor bolt (11) pre-buried at the axillar corner of the side wall (1) and the bottom plate longitudinal beam (2) via a connecting nut (10) arranged in the axillar corner plug plate (6); and the other end of the connecting rod (8) is abutted against the supporting rod (9) via a fixing member.

2. A subway station armpit angle shaping support device according to claim 1, characterized in that: A triangular diagonal bracing stabilizing structure is formed between the axillar plug-in (3), the side wall (1), the bottom plate longitudinal beam (2) and the diagonal bracing assembly (4).

3. A subway station armpit angle shaping support device according to claim 2, characterized in that: The axillar insert plate (6) is a special-shaped component consisting of a vertical plate, an inclined plate and a horizontal plate.

4. The subway station armpit angle shaping support device according to claim 3, characterized in that: Stirrups (13) and stress-bearing bars (14) are provided at the bottom end of the axillary corner plug plate (6) for supporting lateral displacement.

5. The subway station armpit angle shaping support device according to claim 4, characterized in that: The fixing piece is a butterfly nut (12).

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