Subway station beam plate construction disc buckle support supporting system and erecting method

Abstract

The invention discloses a metro station beam and slab construction disc buckle support supporting system and an erecting method. The metro station beam and slab construction disc buckle support supporting system comprises a main beam supporting unit; a secondary beam supporting unit; a plate supporting unit, comprising a plate supporting vertical rod erected on a foundation supporting unit, secondary beam-plate supporting vertical rods located on the two sides of a secondary beam and erected on secondary beam double-spliced channel steel respectively, main beam-plate supporting vertical rods located on the two sides of a main beam and erected on main beam double-spliced channel steel respectively, and node-plate supporting vertical rods located at the intersection node positions of the main beam and the secondary beam. The supporting seats of the node-plate supporting vertical rods are arranged on the node secondary beam double-spliced channel steel in an erected mode and staggered with the node secondary beam supporting vertical rods, and the secondary beam-plate supporting vertical rods and the main beam-plate supporting vertical rods are arranged in a staggered mode with the supporting seats at the corresponding positions of the secondary beam supporting vertical rods and the main beam supporting vertical rods. The plate buckle support supporting system can be suitable for erecting a plate buckle support under the conditions that the height difference of a primary beam and a secondary beam is larger than 0.3 m and beams and slabs are crossed, and the problems of a traditional plate buckle support system in beam and slab construction with the large supporting height and the large beam and slab height difference are well solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a buckle bracket support system and an erection method for subway station beam and slab construction. Background Art

[0002] According to the relevant requirements of the highway engineering construction specifications, in the construction of elevated subway stations, the use of fastener-type steel pipe full-height support frames and ordinary bowl-hook type steel pipe full-height support frames are generally restricted. Disc-hook type support frames are widely used in the construction of elevated subway stations.

[0003] The design of the subway station frame structure takes into account the passage of rail trains, and the cross-sectional dimensions of beams, plates, and columns are large, and the design floor height is high, which makes the design and construction of the support frame scheme very difficult. In addition, the subway station frame structure is mostly of special-shaped pitch, which is difficult to match the modulus of the buckle bracket. The existing buckle bracket support structure often has problems such as weak bearing capacity, poor stability, and high cost. Summary of the invention

[0004] The purpose of the present invention is to provide a support system and erection method for a turnbuckle bracket for subway station beam and slab construction, so as to solve the problems of weak bearing capacity, poor stability and high cost of the existing turnbuckle bracket support structure in subway station construction.

[0005] The present invention is achieved through the following technical solutions: The bracket support system for the construction of beams and slabs in subway stations is used for the construction of beams and slabs at the intersection of the main beam and the secondary beam, including: The basic support unit is a formed disc bracket structure; Set up the unit again, including: The main beam support unit comprises a plurality of main beam double-jointed channel steels sequentially arranged on the brackets of the main beam support uprights along the main beam setting direction; A secondary beam support unit, wherein the secondary beam support unit is arranged in two groups, respectively arranged on both sides of the main beam, including a plurality of secondary beam double-jointed channel steels sequentially erected on the brackets of the secondary beam support uprights along the secondary beam setting direction and a node secondary beam double-jointed channel steel erected on the brackets of the node secondary beam support uprights, wherein the node secondary beam double-jointed channel steels are arranged near the intersection of the main beam and the secondary beam, and the node secondary beam support uprights are respectively erected on the main beam double-jointed channel steels located on both sides of the secondary beam, and are staggered with the brackets at the corresponding positions of the main beam support uprights; The plate support unit includes plate support uprights erected on the foundation support unit, secondary beam-plate support uprights respectively erected on the secondary beam double-jointed channel steels on both sides of the secondary beam, main beam-plate support uprights respectively erected on the main beam double-jointed channel steels on both sides of the main beam, and node-plate support uprights located at the intersection of the main beam and the secondary beam, the node-plate support uprights are respectively erected on the node secondary beam double-jointed channel steels, and are staggered with the node secondary beam support uprights, the secondary beam-plate support uprights and the main beam-plate support uprights are respectively staggered with the brackets at the corresponding positions of the secondary beam support uprights and the main beam support uprights.

[0006] In some embodiments, the main beam-slab support uprights are staggered toward the side close to the main beam and the brackets at the corresponding positions of the main beam support uprights.

[0007] In some embodiments, the secondary beam-plate supporting uprights are staggered with the brackets of the secondary beam supporting uprights toward the side close to the secondary beam.

[0008] In some embodiments, the node secondary beam support upright pole is staggered with the support seat of the main beam support upright pole toward the side close to the main beam; The node-plate supporting uprights are staggered with the node secondary beam supporting uprights toward the side close to the secondary beam.

[0009] In some embodiments, the staggered spacing between the main beam-slab support posts, the secondary beam-slab support posts, the node secondary beam support posts and the brackets, and the staggered spacing between the node-slab support posts and the node secondary beam support posts are 0.1-0.3m.

[0010] In some embodiments, the main beam double-jointed channel steel, the secondary beam double-jointed channel steel, and the node secondary beam double-jointed channel steel include two channel steels arranged side by side and spaced apart, and the two channel steels are respectively arranged on the brackets of the main beam support pole, the secondary beam support pole, the node secondary beam support pole, and the node-plate support pole; The main beam-plate supporting uprights, the secondary beam-plate supporting uprights, the node secondary beam supporting uprights, and the node-plate supporting uprights are respectively arranged between two corresponding channel steels, and are supported on the two channel steels through the discs arranged thereon.

[0011] In some embodiments, a main beam secondary rib is provided on the main beam double-jointed channel steel; Secondary beam secondary ribs are set on the secondary beam double-jointed channel steel and the node secondary beam double-jointed channel steel; Main plate ribs are arranged on the supporting seats of the plate supporting uprights, the secondary beam-plate supporting uprights, the main beam-plate supporting uprights and the node-plate supporting uprights, and secondary plate ribs are arranged on the main plate ribs.

[0012] On the other hand, the present invention also provides a method for erecting a support system of a screw bracket for beam and slab construction of a subway station, which is re-erected on a basic support unit to form a re-erecting unit for beam and slab construction at a node position where a main beam and a secondary beam intersect, comprising the following steps: Along the setting direction of the main beam, the main beam double-jointed channel steels are respectively installed on the brackets of the main beam supporting uprights; At the intersection of the main beam and the plate, main beam-plate support vertical rods are respectively arranged on each main beam double-jointed channel steel, the main beam-plate support vertical rod is arranged between two channel steels, and is arranged on the main beam double-jointed channel steel through the disc support of the main beam-plate support vertical rod, and the main beam-plate support vertical rod is staggered between the support seat of the main beam support vertical rod toward the side close to the main beam; Along the setting direction of the secondary beam, the secondary beam double-jointed channel steels are respectively installed on the secondary beam supports; At the intersection of the secondary beam and the plate, a secondary beam-plate support vertical rod is respectively arranged on each secondary beam double-jointed channel steel, the secondary beam-plate support vertical rod is arranged between two channel steels of the secondary beam double-jointed channel steel, and is arranged on the secondary beam double-jointed channel steel through the disc support of the secondary beam-plate support vertical rod, and the secondary beam-plate support vertical rod is staggered between the support seat of the secondary beam support vertical rod toward the side close to the secondary beam; Installing the plate support uprights on the uprights of the top step frame of the base support unit; A node secondary beam support vertical bar is respectively arranged on two main beam double-joint channel steels at the intersection of the main beam and the secondary beam, the node secondary beam support vertical bar is arranged between two channel steels of the main beam double-joint channel steel, and is arranged on the main beam double-joint channel steel through a disc support of the node secondary beam support vertical bar, and the node secondary beam support vertical bar is staggered between the support seat of the main beam support vertical bar toward the side close to the main beam; A node secondary beam double-jointed channel steel is arranged on the node secondary beam supporting upright, and the node secondary beam double-jointed channel steel is respectively located on both sides of the main beam; A node-plate supporting upright is arranged on the double-jointed channel steel of the node secondary beam, and the node-plate supporting upright is staggered between the node secondary beam supporting upright toward the side close to the secondary beam.

[0013] In some embodiments, the main plate ribs are set on the plate supporting posts, the secondary beam-plate supporting posts, the main beam-plate supporting posts and the node-plate supporting posts, and the secondary plate ribs are set on the main plate ribs; the main plate ribs are arranged along the secondary beam direction, and the secondary plate ribs are arranged along the main beam direction; Lay the secondary beam ribs on the main beam double-jointed channel steel; Lay the secondary beam secondary ribs on the secondary beam double-jointed channel steel and the node secondary beam double-jointed channel steel; The plate forming formwork, main beam forming formwork and secondary beam forming formwork are laid on the plate secondary ribs, main beam secondary ribs and secondary beam secondary ribs respectively.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention adopts a structure of setting up plate support uprights again on the main cross beam of the existing frame beam body, which effectively solves the problems existing in the traditional disc-hook bracket system in the beam-slab construction with large support height and large height difference between the beam and the slab, and by adopting the method of staggered arrangement of double-jointed channel steels and support uprights, it effectively solves the problems of large beam hanging length at the junction of the beam and the slab, conflict between the position of the plate support uprights and the beam top support seat, difficulty in arranging the secondary beam support uprights at the node where the main and secondary beams intersect, and difficulty in ensuring the stability of the double-jointed channel steel structure.

[0015] The disc-lock bracket support system of the present invention can be applied to the erection of disc-lock brackets when the height difference between the primary and secondary beams is greater than 0.3m and when the beams and slabs intersect. No additional processed components are required and the bearing capacity of the bracket and the supporting pole disc can be fully utilized. The stability of the re-erected structure is well guaranteed by the mutual engagement of the channel steel, the supporting pole and the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention 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 creative work.

[0017] Figure 1 This is a schematic diagram of the disc-shaped bracket structure that uses a common frame for beams and slabs.

[0018] Figure 2 It is a schematic diagram of the disc-hook bracket structure using the beam-slab independent frame method.

[0019] Figure 3 This is a schematic diagram of the disc-shaped bracket structure that is erected at the minimum spacing.

[0020] Figure 4 It is a schematic diagram of the unit structure re-erected in the buckle bracket support system according to an embodiment of the present invention.

[0021] Figure 5 This is a structural schematic diagram from another perspective of the re-erecting unit in the buckle bracket support system according to an embodiment of the present invention.

[0022] Figure 6 This is a front view of a unit structure re-erected in the buckle bracket support system of an embodiment of the present invention.

[0023] Figure 7 It is a side view of a unit structure erected again in the buckle bracket support system according to an embodiment of the present invention.

[0024] Figure 8It is a schematic diagram of the structure at the intersection of the beam and slab in the unit re-erected in the buckle bracket support system according to an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of the installation of the conversion base in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0026] Fig.10 It is a schematic diagram of the installation structure of the neutral pole in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0027] Fig.11 It is a schematic diagram of the standard step frame erection structure in the method for erecting the disc-lock bracket support system according to an embodiment of the present invention.

[0028] Fig.12 It is a schematic diagram of the installation structure of the top vertical pole of the top step frame in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0029] Fig.13 It is a schematic diagram of the installation structure of the top horizontal rod of the top step frame in the method for erecting the disc-lock bracket support system according to an embodiment of the present invention.

[0030] Fig.14 It is a schematic diagram of the installation structure of the diagonal rods of the top step frame in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0031] Fig.15 It is a schematic diagram of the installation structure of the top step frame beam and the bottom upright pole in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0032] Fig.16 It is a schematic diagram of the installation structure of the adjustable bracket of the top step frame in the method for erecting the disc-lock bracket support system according to an embodiment of the present invention.

[0033] Fig.17 It is a partial schematic diagram of the re-erecting structure in the method for erecting the disc-hook bracket support system according to an embodiment of the present invention.

[0034] Fig.18 It is a schematic diagram of the structure of the disc-lock support system in the method for erecting the disc-lock support system in an embodiment of the present invention.

[0035] Fig.19 It is the finite element model and analysis diagram of the disc-lock bracket support system of the embodiment of the present invention.

[0036] in: 101. Main beam double channel steel, 102. Secondary beam double channel steel, 103. Node secondary beam support pole, 105. Node secondary beam double channel steel, 106. Plate support pole, 107. Secondary beam-plate support pole, 108. Main beam-plate support pole, 109. Node-plate support pole; 201, main beam secondary rib, 202, secondary beam secondary rib, 203, plate main rib, 204, plate secondary rib; 301, main beam forming template, 302, secondary beam forming template, 303, plate forming template; 40. Bracket; 501, main beam supporting pole, 502, secondary beam supporting pole. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0038] A certain project includes the construction of two subway stations, one of which is a two-story double-island four-line branch line connection station. The total length of the station is 95m, the total width is 35.3m, the effective standard section width is 8.5m+10m, and the right platform at the short-distance end is partially retracted by 50mm, with a design width of 9.95m. The main structure of the station adopts a bridge-building structure type in which the track beam and the main structure of the station are rigidly connected. Precast concrete components are used and arranged according to the axis. The maximum horizontal axis span is 10.85m, the maximum longitudinal axis span is 13m, and the track area uses a 500mm thick concrete slab. The maximum main frame beam size is 800×2000mm 2 .

[0039] The other subway station is the depot connection station, which is a three-story side elevated station. The first floor is the equipment room floor, the second floor is the station hall floor, and the third floor is the platform floor. The total length of the station is 95m, the total width is 19m, the effective platform width is 5.6m+5.6m, and the main structure adopts a horizontal four-column three-span frame structure. The track beam and the main structure of the station adopt a rigidly connected bridge-building structure. The main frame beam of the station adopts a cast-in-place ordinary concrete structure, arranged according to the axis, with a maximum horizontal axis span of 8.6m and a maximum longitudinal axis span of 12m; the concrete slab thickness is 500mm, and the maximum main beam size is 600×1700mm 2 .

[0040] Compared with other brackets, the disc-shaped bracket has the characteristics of high single-pole bearing capacity, fast erection and disassembly, good rod quality and good overall benefits. However, there are problems such as the frame size is limited by the modulus and the difficulty in arranging the vertical poles of the frame structure, which restricts its application in station beam and slab forming.

[0041] In actual engineering construction, only 600mm cross bars can be rented on the market. Therefore, in actual functional construction, only cross bars with a minimum spacing of 600mm can be used. This also causes great difficulties in the erection of support poles at the junction of beams and slabs in the subway station's buckle support system.

[0042] There are three main structural forms of the commonly used disc bracket support system: 1) beam and slab shared frame, such as Figure 1 2) beam-slab independent frame, such as Figure 2 3) Erect according to the minimum spacing, such as Figure 3 As shown; the advantages and disadvantages of the above three structural forms are shown in Table 1.

[0043] Table 1 Comparison of the advantages and disadvantages of different structural support systems During the design of the project construction, it was found that the above two stations used cast-in-place frame beams, the support erection height reached 6m, the maximum beam size reached 0.8m×1.975m, and the line load reached 76.616kN / m.

[0044] If a shared beam-slab frame structure is adopted, there is a situation where the beam line load is too large and the bearing capacity of the disc of the buckle bracket is insufficient, and the bearing capacity of the bracket support system cannot meet the requirements; if an independent beam-slab frame structure is adopted, due to the high height of the bracket erection, there is a situation where the width-to-height ratio of the support frame is greater than 3, and the width-to-height ratio between the buckles cannot meet the requirements, and the stability of the buckle bracket cannot be guaranteed; if the structure is erected at the minimum spacing, the amount of steel used in the support system of the two stations will be greatly increased to 2,621t, and the erection cost of the buckle bracket will be greatly increased.

[0045] The present invention adopts a method of re-erecting a plate support upright on the main cross beam of the existing frame beam body, which can well solve the problems existing in the traditional disc buckle bracket support system and can well ensure the stability of the re-erecting.

[0046] In view of the construction structure characteristics of this project, the following difficulties were found in the re-erection structure of the disc-type bracket support system of this project: 1) There is a conflict between the position of the plate support uprights and the beam top support seats; 2) At the intersection of the main beam and the secondary beam, it is difficult to arrange the node secondary beam support uprights; 3) The stability of the double-jointed channel steel in the disc-type bracket support system is difficult to guarantee.

[0047] In some embodiments, in the re-erection of the disc bracket for the beam-slab node, a Z-shaped disc bracket structure and double-splice channel steel are used. Based on the double-splice channel steel crossbeam, the setting position of the plate support uprights on the double-splice channel steel crossbeam is moved a certain distance in the direction of the main beam, so that the plate support uprights and the main beam top supports are staggered.

[0048] This structural setting can effectively solve the problem that the bearing capacity of the support beam in the existing disc-hook bracket is weak and an additional anti-falling device needs to be installed; it can also effectively solve the problem that the hanging length of the main rib of the slab is too long at the junction of the beam and slab, and fully utilizes the shear resistance of the supporting vertical rod disc, making the disc-hook bracket support system simple to erect and highly safe.

[0049] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of the present invention, a support system for the construction of beams and slabs of subway stations is used for the construction of beams and slabs at the intersection of the main beam and the secondary beam, and includes: The basic support unit is a formed disc bracket structure; Set up the unit again, including: The main beam support unit includes a plurality of main beam double-jointed channel steels 101 sequentially mounted on the brackets 40 of the main beam support uprights 501 along the main beam setting direction; Secondary beam support unit, the secondary beam support unit is set in two groups, which are respectively set on both sides of the main beam to be formed, including a plurality of secondary beam double-jointed channel steels 102 sequentially erected on the brackets 40 of the secondary beam support uprights 502 along the secondary beam setting direction and a node secondary beam double-jointed channel steel 105 erected on the brackets 40 of the node secondary beam support uprights 103, the node secondary beam double-jointed channel steel 105 is set near the intersection of the main beam and the secondary beam, the node secondary beam support uprights 103 are respectively erected on the main beam double-jointed channel steels 101 located on both sides of the secondary beam, and the node secondary beam support uprights 103 are staggered with the brackets 40 at the corresponding positions of the main beam support uprights 501; The plate support unit includes a plate support vertical rod 106 erected on the foundation support unit, a secondary beam-plate support vertical rod 107 respectively erected on the secondary beam double-jointed channel steel 102 on both sides of the secondary beam, a main beam-plate support vertical rod 108 respectively erected on the main beam double-jointed channel steel on both sides of the main beam, and a node-plate support vertical rod 109 located at the intersection of the main beam and the secondary beam, refer to Figure 8 The node-plate supporting uprights 109 are respectively erected on the node secondary beam double-jointed channel steel 105, and are staggered with the node secondary beam supporting uprights 103. The secondary beam-plate supporting uprights 107 and the main beam-plate supporting uprights 108 are respectively staggered with the brackets 40 at the corresponding positions of the secondary beam supporting uprights 502 and the main beam supporting uprights 501.

[0050] At the junction of the main beam and the secondary beam, the method of setting up node secondary beam support uprights on the double-jointed channel steel of the main beam and setting up node-plate support uprights on the double-jointed channel steel of the node secondary beam is adopted. This effectively solves the problems of interference caused by the re-erection of the disc-hook bracket and excessive hanging length at the junction of the main and secondary beams.

[0051] In some embodiments, the main beam-slab support uprights 108 are staggered toward one side of the main beam and are arranged to be closer to the brackets 40 at positions corresponding to the main beam support uprights.

[0052] In some embodiments, the secondary beam-plate support uprights 107 are staggered toward the side close to the secondary beam and the brackets 40 at the corresponding positions of the secondary beam support uprights.

[0053] In some embodiments, the node secondary beam support upright 103 is staggered with the bracket 40 at the corresponding position of the main beam support upright toward the side close to the main beam; the node-plate support upright 109 is staggered with the node secondary beam support upright toward the side close to the secondary beam.

[0054] In some embodiments, the staggered spacing between the main beam-plate support uprights 108, the secondary beam-plate support uprights 107, the node secondary beam support uprights 103 and the brackets 40, and the staggered spacing between the node-plate support uprights and the node secondary beam support uprights is 0.1-0.3m. For example, the staggered distance is set to 0.2m, which optimizes the load distribution while ensuring the stability of the supporting structure.

[0055] In some embodiments, the main beam double channel steel 101, the secondary beam double channel steel 102, and the node secondary beam double channel steel 105 each include two channel steels arranged side by side and spaced apart, and the two channel steels are respectively arranged on the brackets of the main beam support pole, the secondary beam support pole, the node secondary beam support pole, and the node-plate support pole; The main beam-plate supporting uprights 108, the secondary beam-plate supporting uprights 107, the node secondary beam supporting uprights 103, and the node-plate supporting uprights 109 are respectively arranged between two corresponding channel steels, and are supported on the two channel steels through the discs arranged thereon.

[0056] In some embodiments, a main beam secondary rib 201 is provided on the main beam double channel steel 101; A secondary beam secondary rib 202 is mounted on the secondary beam double channel steel 102 and the node secondary beam double channel steel 105; The main plate ribs 203 are arranged on the brackets 40 of the plate supporting uprights 106 , the secondary beam-plate supporting uprights 107 , the main beam-plate supporting uprights 108 and the node-plate supporting uprights 109 , and the secondary plate ribs 204 are arranged on the main plate ribs 203 .

[0057] The following takes the construction steps of the disc bracket support system of a subway station as an example to explain in detail the structure of the disc bracket support system of the present invention and the method for erecting the support system. The specific construction steps are as follows: 1. Elastic line positioning Before erection, mark the position lines of the supports on the base according to the support system plan.

[0058] 2. First step: erection of the frame According to the order of the intersection points of the layout, the installation bases are arranged on the intersection points of the layout, and the bases are adjustable bases.

[0059] The maximum distance between the base and the center rod of the sweeping rod is 550mm, the exposed screw rod of the base shall not exceed 300mm, and the length of the screw rod of the base inserted into the column shall not be less than 150mm.

[0060] The foundation structure adopts reinforced concrete foundation, and the base is directly set on the foundation structure without laying a pad in the middle.

[0061] Insert the short end of the conversion base into the adjustable base and install the conversion base on the adjustable base respectively.

[0062] Vertical poles are inserted at the other end of the conversion base. There is a certain height difference between adjacent vertical poles to form a high and low staggered arrangement. The height difference between the vertical poles should not be less than 500mm.

[0063] Horizontal bars are set up between the vertical poles for connection. Both ends of the horizontal bars are fixedly connected to the vertical pole discs by pins. The standard pitch of the horizontal bars is 1500mm, and the pitch of the horizontal bars on the top layer does not exceed 1000mm.

[0064] 3. Standard step frame erection Vertical poles and horizontal poles are set up in sequence on the first step frame to form a standard step frame.

[0065] 4. Top step frame erection Vertical poles, horizontal poles and diagonal poles are set up on the standard step frame to form a top step frame.

[0066] A bottom beam support rod is respectively set up near the four corners of the top step frame. The bottom beam support rod is located between two adjacent vertical rods, and the height of the bottom beam support rod is lower than the height of the two adjacent vertical rods.

[0067] Adjustable brackets are installed on the top of the vertical pole and the bottom support rod of the beam respectively.

[0068] At this point, the erection of the foundation support unit is completed.

[0069] 5. Set up the buckle bracket again 5.1) Re-erecting of the beam-slab node bracket Along the setting direction of the secondary beam, the secondary beam double-jointed channel steels 102 are respectively installed on the brackets of the secondary beam supporting uprights 502, and the secondary beam double-jointed channel steels 102 are arranged at intervals along the setting direction of the secondary beam.

[0070] The secondary beam double-jointed channel steel is composed of two channel steels, for example, [8 channel steel can be used; the two channel steels are arranged on the bracket of the secondary beam supporting column, and the setting distance between the two channel steels is limited by the bracket.

[0071] Install the plate support uprights 106 on the uprights of the top step frame; At the intersection of the secondary beam and the plate, a secondary beam-plate supporting upright 107 is respectively arranged on each secondary beam double channel steel 102. The secondary beam-plate supporting upright 107 is arranged between the two channel steels of the secondary beam double channel steel 102, and is arranged on the secondary beam double channel steel 102 through the disc support of the secondary beam-plate supporting upright 107.

[0072] The secondary beam-plate supporting uprights 107 are staggered a certain distance from the support seat of the top step frame toward the side close to the secondary beam, for example, staggered 0.2m toward the side close to the secondary beam.

[0073] Along the setting direction of the main beam, the main beam double-jointed channel steels 101 are respectively installed on the brackets of the main beam support uprights 501, and the main beam double-jointed channel steels 101 are arranged at intervals along the setting direction of the main beam.

[0074] The main beam double-jointed channel steel is composed of two channel steels, and the two channel steels are arranged on the supporting base of the main beam double-jointed channel steel. The setting distance between the two channel steels is limited by the supporting base of the main beam double-jointed channel steel.

[0075] At the intersection of the main beam and the plate, a main beam-plate supporting upright 108 is respectively arranged on each main beam double channel steel. The main beam-plate supporting upright 108 is arranged between the two channel steels of the main beam double channel steel, and is arranged on the main beam double channel steel through the disc support of the main beam-plate supporting upright.

[0076] The main beam-slab supporting uprights 108 are staggered a certain distance from the support seat of the top step frame toward the side close to the main beam, for example, staggered 0.2m toward the side close to the secondary beam.

[0077] 5.2) Re-erect the brackets at the intersection of the main beam and the secondary beam Node secondary beam support uprights 103 are respectively arranged on the two main beam double-jointed channel steels 101 at the intersection of the main beam and the secondary beam. The node secondary beam support uprights 103 are arranged between the two channel steels of the main beam double-jointed channel steel, and are arranged on the main beam double-jointed channel steel through the disc support of the node secondary beam support uprights.

[0078] The node secondary beam supporting upright 103 is staggered a certain distance from the supporting seat of the main beam supporting upright 501 toward the main beam, for example, staggered 0.2m toward one side of the main beam.

[0079] A node secondary beam double-jointed channel steel 105 is arranged on a bracket of the node secondary beam supporting upright 103, and the node secondary beam double-jointed channel steel 105 is respectively located on both sides of the main beam.

[0080] A node-plate support upright 109 is arranged on the node secondary beam double-jointed channel steel 105. The node-plate support upright 109 is arranged at a certain distance from the node secondary beam support upright toward the side close to the secondary beam, for example, 0.2m toward the side of the secondary beam. Similarly, the node-plate support upright is arranged between the two channel steels of the node secondary beam double-jointed channel steel, and is arranged on the node secondary beam double-jointed channel steel through the disc support of the node secondary beam support upright.

[0081] Complete the re-erection of the disc buckle bracket.

[0082] 6. Wooden formwork erection The main plate ribs 203 are set on the supports of the plate supporting uprights 106, the secondary beam-plate supporting uprights 107, the main beam-plate supporting uprights 108 and the node-plate supporting uprights 109, and the secondary plate ribs 204 are set on the main plate ribs 203; the main plate ribs 203 are arranged along the direction of the secondary beam, and the secondary plate ribs 204 are arranged along the direction of the main beam.

[0083] Lay the main beam secondary rib 201 on the main beam double channel steel 101; Lay the secondary beam secondary ribs 202 on the secondary beam double-jointed channel steel 102 and the node secondary beam double-jointed channel steel 105; The plate forming template 303, the main beam forming template 301 and the secondary beam forming template 302 are laid on the plate secondary rib 204, the main beam secondary rib 201 and the secondary beam secondary rib 202 respectively.

[0084] The secondary ribs of the main beam, the secondary ribs of the secondary beam, the main ribs of the board, and the secondary ribs of the board can be made of 10×10cm square timber; the board forming formwork, the main beam forming formwork, and the secondary beam forming formwork can be made of 1.5cm thick formwork.

[0085] The force analysis of the buckle bracket system of the present invention was carried out, and the buckle bracket and finite element model were established. The components were simulated by bar system units, and the overlap was simulated by elastic connection. The horizontal bars and diagonal bars of the buckle bracket were all rotationally constrained by 20kN*m / [rad]. The boundary conditions were set at the bottom of the vertical pole to constrain the translational freedom in three directions. Through the above parameter settings, a finite element model of the optimal solution for the buckle bracket re-erection structure with 2430 nodes, 3008 beam units, and 1000 plate units was established, as shown in the figure. Fig.19 .

[0086] The stress conditions are as follows: The concrete pouring speed is relatively slow during the construction of the buckle bracket, and it can be analyzed according to the static load condition. The load is transferred from the 1.5cm thick formwork to the 10×10cm square wood, double-jointed channel steel, support pole disc, support pole, buckle base and finally to the concrete foundation.

[0087] The self-weight of each component is automatically calculated in the analysis software. The manually added loads include concrete load, steel load, and construction load. The standard value of concrete load is 24kN / m 2 The standard value of plate reinforcement load is 1.1kN / m 2 The standard value of the main and secondary beam reinforcement load is 1.5kN / m 2 The construction load is 3kN / m 2 To obtain the value, apply the above load as a surface load on a 1.5 cm thick formwork, and perform verification according to the following two working conditions: (1) Safety verification of the disc support system under the ultimate load-bearing capacity state; (2) Verification of the deformation of the disc bracket under the limit state of normal use.

[0088] The results of finite element analysis are as follows: Through finite element analysis and calculation, the stress, load and deformation results of the buckle bracket under two working conditions can be obtained, as shown in Table 2.

[0089] Table 2 Finite element analysis results It can be seen from Table 2 that during the casting process of the disc buckle bracket, the stress values ​​of each component and node did not exceed the allowable stress value of the material. The maximum stress of the disc buckle bracket supporting the vertical pole was 148.82Mpa, which was less than the allowable value of 300Mpa; the stress value of the double-jointed channel steel beam was 70.59Mpa, which was less than the allowable value of 215Mpa; the maximum load of the bracket was 64.92kN, which was less than the allowable bearing capacity of the bracket of 140kN; the maximum shear force on the supporting vertical pole disc was 17.8kN, which was less than the allowable value of 40kN; the deformation of each component was within the allowable range of the specification, and the disc buckle bracket was re-erected. The structural strength, stiffness and stability all met the requirements of the specification.

[0090] The spacing between the vertical poles of the disc bracket support system of the present invention can be optimized from 0.6m×0.6m to 0.6m×0.9m, 0.9m×0.9m, and 1.2m×0.9m; under the condition that the volume of the bracket remains unchanged, the steel consumption per cubic meter is reduced from 47.6kg / m 3 Reduced to 23.54kg / m after optimization 3 ; and the labor cost per cubic meter required for erection is also reduced accordingly.

[0091] By adopting the disc-shaped bracket support system and erection method of the present invention, the construction efficiency is improved while ensuring construction safety. The cost of erecting the support system is reduced from 3.666 million yuan to 2.26 million yuan, the cost of erecting the disc-shaped bracket is reduced by about 30%, and the amount of steel used is reduced by about 50% compared with before optimization.

[0092] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship commonly placed when the product of the invention is used. 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0093] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0094] In the description of the present invention, it is also necessary to explain 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0095] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. The buckle bracket support system for the construction of beams and slabs in subway stations is used for the construction of beams and slabs at the intersection of the main beam and the secondary beam. It is characterized by: include: The basic support unit is a formed disc bracket structure; Set up the unit again, including: The main beam support unit comprises a plurality of main beam double-jointed channel steels sequentially arranged on the brackets of the main beam support uprights along the main beam setting direction; A secondary beam support unit, wherein the secondary beam support unit is arranged in two groups, respectively arranged on both sides of the main beam, including a plurality of secondary beam double-jointed channel steels sequentially erected on the brackets of the secondary beam support uprights along the secondary beam setting direction and a node secondary beam double-jointed channel steel erected on the brackets of the node secondary beam support uprights, wherein the node secondary beam double-jointed channel steels are arranged near the intersection of the main beam and the secondary beam, and the node secondary beam support uprights are respectively erected on the main beam double-jointed channel steels located on both sides of the secondary beam, and are staggered with the brackets at the corresponding positions of the main beam support uprights; The plate support unit includes plate support uprights erected on the foundation support unit, secondary beam-plate support uprights respectively erected on the secondary beam double-jointed channel steels on both sides of the secondary beam, main beam-plate support uprights respectively erected on the main beam double-jointed channel steels on both sides of the main beam, and node-plate support uprights located at the intersection of the main beam and the secondary beam, the node-plate support uprights are respectively erected on the node secondary beam double-jointed channel steels, and are staggered with the node secondary beam support uprights, the secondary beam-plate support uprights and the main beam-plate support uprights are respectively staggered with the brackets at the corresponding positions of the secondary beam support uprights and the main beam support uprights.

2. The support system for the subway station beam and slab construction according to claim 1 is characterized in that: The main beam-slab support uprights are staggeredly arranged toward one side close to the main beam and the support seats at the corresponding positions of the main beam support uprights.

3. The support system for the subway station beam and slab construction according to claim 1 is characterized in that: The secondary beam-plate supporting upright is staggered with the supporting seat of the secondary beam supporting upright towards the side close to the secondary beam.

4. The disc bracket support system for subway station beam and slab construction according to claim 1 is characterized in that: The node secondary beam support upright is staggered with the support seat of the main beam support upright towards the side close to the main beam; The node-plate supporting uprights are staggered with the node secondary beam supporting uprights toward the side close to the secondary beam.

5. The disc bracket support system for subway station beam and slab construction according to claim 1 is characterized in that: The staggered spacing between the main beam-slab support uprights, the secondary beam-slab support uprights, the node secondary beam support uprights and the brackets, and the staggered spacing between the node-slab support uprights and the node secondary beam support uprights are 0.1-0.3m.

6. The disc bracket support system for subway station beam and slab construction according to claim 1 is characterized in that: The main beam double-jointed channel steel, the secondary beam double-jointed channel steel, and the node secondary beam double-jointed channel steel include two channel steels arranged side by side and spaced apart, and the two channel steels are respectively arranged on the brackets of the main beam support pole, the secondary beam support pole, the node secondary beam support pole, and the node-plate support pole; The main beam-plate supporting uprights, the secondary beam-plate supporting uprights, the node secondary beam supporting uprights, and the node-plate supporting uprights are respectively arranged between two corresponding channel steels, and are supported on the two channel steels through the discs arranged thereon.

7. The disc bracket support system for subway station beam and slab construction according to claim 1 is characterized in that: The secondary ribs of the main beam are set on the double-jointed channel steel of the main beam; Secondary beam secondary ribs are set on the secondary beam double-jointed channel steel and the node secondary beam double-jointed channel steel; Main plate ribs are arranged on the supporting seats of the plate supporting uprights, the secondary beam-plate supporting uprights, the main beam-plate supporting uprights and the node-plate supporting uprights, and secondary plate ribs are arranged on the main plate ribs.

8. A method for erecting a support system of a buckle bracket for beam and slab construction of a subway station, characterized in that: Re-erecting on the foundation support unit to form a re-erecting unit for beam and slab construction at the intersection node of the main beam and the secondary beam, including the following steps: Along the setting direction of the main beam, the main beam double-jointed channel steels are respectively installed on the brackets of the main beam supporting uprights; At the intersection of the main beam and the plate, main beam-plate support vertical rods are respectively arranged on each main beam double-jointed channel steel, the main beam-plate support vertical rod is arranged between two channel steels, and is arranged on the main beam double-jointed channel steel through the disc support of the main beam-plate support vertical rod, and the main beam-plate support vertical rod is staggered between the support seat of the main beam support vertical rod toward the side close to the main beam; Along the setting direction of the secondary beam, the secondary beam double-jointed channel steels are respectively installed on the secondary beam supports; At the intersection of the secondary beam and the plate, a secondary beam-plate support vertical rod is respectively arranged on each secondary beam double-jointed channel steel, the secondary beam-plate support vertical rod is arranged between two channel steels of the secondary beam double-jointed channel steel, and is arranged on the secondary beam double-jointed channel steel through the disc support of the secondary beam-plate support vertical rod, and the secondary beam-plate support vertical rod is staggered between the support seat of the secondary beam support vertical rod toward the side close to the secondary beam; Installing the plate support uprights on the uprights of the top step frame of the base support unit; A node secondary beam support vertical bar is respectively arranged on two main beam double-joint channel steels at the intersection of the main beam and the secondary beam, the node secondary beam support vertical bar is arranged between two channel steels of the main beam double-joint channel steel, and is arranged on the main beam double-joint channel steel through a disc support of the node secondary beam support vertical bar, and the node secondary beam support vertical bar is staggered between the support seat of the main beam support vertical bar toward the side close to the main beam; A node secondary beam double-jointed channel steel is arranged on the node secondary beam supporting upright, and the node secondary beam double-jointed channel steel is respectively located on both sides of the main beam; A node-plate supporting upright is arranged on the double-jointed channel steel of the node secondary beam, and the node-plate supporting upright is staggered between the node secondary beam supporting upright toward the side close to the secondary beam.

9. The method for erecting a support system of a screw bracket for beam and slab construction of a subway station according to claim 8, characterized in that: Main slab ribs are set up on slab support posts, secondary beam-slab support posts, main beam-slab support posts and node-slab support posts, and secondary slab ribs are set up on the main slab ribs; The main ribs of the plate are arranged along the direction of the secondary beam, and the secondary ribs of the plate are arranged along the direction of the main beam; Lay the secondary beam ribs on the main beam double-jointed channel steel; Lay the secondary beam secondary ribs on the secondary beam double-jointed channel steel and the node secondary beam double-jointed channel steel; The plate forming formwork, main beam forming formwork and secondary beam forming formwork are laid on the plate secondary ribs, main beam secondary ribs and secondary beam secondary ribs respectively.

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