Subway station beam-slab-column construction support system and erecting method

Abstract

The invention discloses a subway station beam-slab-column construction support system and an erecting method, and the system comprises two groups of main beam supporting units which are respectively arranged at the two sides of a column; the two sets of transfer layer supporting units are oppositely arranged on the two sides of the main beam in the arrangement direction of the secondary beams respectively and comprise transfer layer double-spliced channel steel close to the secondary beams and arranged on the two sides of the secondary beams respectively, and the two ends of the transfer layer double-spliced channel steel are erected on the brackets of the basic supporting units and the brackets of the transfer layer supporting vertical rods respectively; the transfer layer supporting vertical rods are erected on the main beam double-splicing steel channels located on the two sides of the secondary beams correspondingly and staggered from the brackets at the corresponding positions of the basic supporting units. The two groups of secondary beam supporting units are respectively arranged on the two sides of the column; the plate supports the unit. The plate buckle support supporting system can be suitable for erecting of the plate buckle support under the conditions of any beam-slab height difference and beam-slab-column intersection, and the problems existing in beam-slab construction with the large supporting height and the large beam-slab height difference of a traditional plate buckle support system are well solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a subway station beam, slab and column construction support system and an erection method. 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 subway station beam, slab and column construction support system and an erection method to solve the problems of weak bearing capacity, poor stability and high cost of the existing buckle support structure in subway station construction.

[0005] The present invention is achieved through the following technical solutions: The subway station beam, slab and column construction support system is used for the construction of beams, slabs and columns at the intersection of the main beam, secondary beam and column, including: The basic support unit is a formed disc bracket structure; Set up the unit again, including: The main beam support unit is provided in two groups, which are respectively provided on both sides of the column, including a main beam support column mounted on the basic support unit, a plurality of main beam double-jointed channel steels sequentially mounted on the brackets of the main beam support column along the main beam setting direction, a conversion double-jointed channel steel mounted on the disk of the node secondary beam support column, a conversion support column mounted on the conversion double-jointed channel steel, and a node main beam double-jointed channel steel mounted on the conversion support column; Secondary beam support units, the secondary beam support units are arranged in two groups, respectively arranged on both sides of the column, including secondary beam support uprights erected on the basic support units, node secondary beam support uprights erected on the basic support units, and secondary beam double-jointed channel steels sequentially erected on the secondary beam support uprights and the support seats of the node secondary beam support uprights along the secondary beam setting direction; The plate support unit includes plate support uprights erected on the foundation support unit, main beam-plate support uprights located on both sides of the main beam and respectively erected on the main beam double-jointed channel steels, and secondary beam-plate support uprights located on both sides of the secondary beam and respectively erected on the secondary beam double-jointed channel steels; the main beam-plate support uprights and secondary beam-plate support uprights are staggered with the support seats of the main beam support uprights, the secondary beam support uprights, and the node secondary beam support uprights, respectively.

[0006] In some embodiments, the support base of the conversion support upright is set on the conversion double-piece channel steel and is clip-fitted with the conversion double-piece channel steel. The two ends of the node main beam double-piece channel steel are respectively placed on the discs of the conversion support upright. The middle support of the node main beam double-piece channel steel is set on the support base of the main beam support upright located between the two node secondary beam support uprights.

[0007] In some embodiments, the conversion support uprights are staggered with the node secondary beam support uprights and are arranged at a position close to the main beam.

[0008] In some embodiments, the main beam-plate support uprights and the secondary beam-plate support uprights are staggered at intervals of 0.1-0.3m from the support bases of the main beam support uprights and the secondary beam support uprights, respectively.

[0009] In some embodiments, the main beam double channel steel, the secondary beam double channel steel, the conversion double channel steel, and the node main beam double channel steel include two channel steels spaced side by side.

[0010] In some embodiments, the node secondary beam support upright is arranged between the two channel steels of the conversion double-jointed channel steel, and the conversion support upright is arranged between the two channel steels of the node main beam double-jointed channel steel.

[0011] In some embodiments, the two channel steels of the main beam double-piece channel steel and the secondary beam double-piece channel steel are respectively arranged side by side and spaced apart on the support seats of the main beam support uprights, the secondary beam support uprights and the node secondary beam support uprights.

[0012] In some embodiments, a main beam secondary rib is provided on the main beam double-jointed channel steel and the node main beam double-jointed channel steel; A secondary beam secondary rib is set on the 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 and the main beam-plate supporting uprights, and secondary plate ribs are arranged on the main plate ribs.

[0013] On the other hand, the present invention also provides a method for erecting a support system for beam, slab and column construction of a subway station, which comprises 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; A conversion double-jointed channel steel is set on the disk of the node secondary beam support pole, and the two conversion double-jointed channel steels are respectively located on both sides of the secondary beam, and two conversion support poles are relatively set on the conversion double-jointed channel steel, and the support of the conversion support pole is set on the conversion double-jointed channel steel, and the node main beam double-jointed channel steel is set on the disk of the conversion support pole, and the node main beam double-jointed channel steel is set on the support of the main beam support pole located between the two node secondary beam support poles; Plate support poles are set on the poles of the foundation support unit, main beam-plate support poles are set on the main beam double-jointed channel steel, and secondary beam-plate support poles are set on the secondary beam double-jointed channel steel; the main beam-plate support poles and secondary beam-plate support poles are staggered with the support seats of the main beam support poles, secondary beam support poles and node secondary beam support poles respectively.

[0014] In some embodiments, the main plate ribs are set on the support bases of the plate support posts, the secondary beam-plate support posts and the main beam-plate support posts, and the secondary plate ribs are set on the main plate ribs; the main plate ribs are set along the direction of the secondary beams, and the secondary plate ribs are set along the direction of the main beams; Lay the secondary beam ribs on the main beam double-jointed channel steel and node main beam double-jointed channel steel; Lay the secondary beam secondary ribs on the 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.

[0015] 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 intersection of the beam and the slab and the beam and the column, conflict between the position of the plate support uprights and the beam top support seat, difficulty in arranging the secondary beam support structure at the intersection node of the main and secondary beams and the columns, and difficulty in ensuring the stability of the double-jointed channel steel structure.

[0016] The disc-lock bracket support system of the present invention can be applied to the erection of disc-lock brackets in any beam-slab height difference and beam-slab-column intersection situations, without the need for additional processed components, and can fully utilize the bearing capacity of the bracket and the supporting upright disc. The stability of the re-erected structure is well guaranteed by the mutual engagement of the channel steel, the supporting upright and the bracket.

[0017] The present invention adopts the method of separately constructing the main beam support system and the secondary beam support system. By adjusting the direction of the conversion support uprights located on both sides of the main beam, the support seats of the conversion support uprights are set on the conversion double-jointed channel steels. At the same time, the support seats of the main beam support uprights are used to clamp and support the conversion double-jointed channel steels. The conversion structure forms a mutual clamping connection, which makes the support system easy to construct and has high safety. It can be applied to construction conditions with arbitrary height differences between the main and secondary beams and has good application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the disc-shaped bracket structure that uses a common frame for beams and slabs.

[0020] Figure 2 It is a schematic diagram of the disc-hook bracket structure using the beam-slab independent frame method.

[0021] Figure 3 This is a schematic diagram of the disc-shaped bracket structure that is erected at the minimum spacing.

[0022] Figure 4 It is a schematic diagram of the unit structure re-erected in the support system of an embodiment of the present invention.

[0023] Figure 5 It is a structural schematic diagram from another perspective of the re-erection unit in the support system of an embodiment of the present invention.

[0024] Figure 6 This is a front view of a unit structure re-erected in the support system of an embodiment of the present invention.

[0025] Figure 7 It is a side view of a unit structure erected again in the support system according to an embodiment of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure at the junction of unit beams and slabs erected again in the support system according to an embodiment of the present invention.

[0027] Fig. 9 It is a schematic diagram of the support structure of the unit conversion support rods set up again in the support system of an embodiment of the present invention.

[0028] Fig.10 It is a schematic diagram of the installation of the conversion base in the method for erecting the support system according to an embodiment of the present invention.

[0029] Fig.11It is a schematic diagram of the installation structure of the neutral pole in the method for erecting a support system according to an embodiment of the present invention.

[0030] Fig.12 It is a schematic diagram of the standard step frame erection structure in the support system erection method according to an embodiment of the present invention.

[0031] Fig.13 It is a schematic diagram of the installation structure of the top vertical pole of the top step frame in the method for erecting a support system according to an embodiment of the present invention.

[0032] Fig.14 It is a schematic diagram of the installation structure of the top horizontal rod of the top step frame in the method for erecting a support system according to an embodiment of the present invention.

[0033] Fig.15 It is a schematic diagram of the installation structure of the diagonal rods of the top step frame in the method for erecting the support system according to an embodiment of the present invention.

[0034] Fig.16 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 support system according to an embodiment of the present invention.

[0035] Fig.17 It is a schematic diagram of the installation structure of the adjustable bracket of the top step frame in the method for erecting the support system according to an embodiment of the present invention.

[0036] Fig.18 It is a schematic diagram of the structure of the disc-shaped bracket erection system in the bracket system erection method according to an embodiment of the present invention.

[0037] Fig.19 It is a finite element model and analysis diagram of the support system of an embodiment of the present invention.

[0038] in: 101. Main beam double channel steel, 102. Secondary beam double channel steel, 103. Conversion double channel steel, 104. Node main beam double channel steel, 105. Conversion support vertical rod, 106. Plate support vertical rod, 107. Secondary beam-plate support vertical rod, 108. Main beam-plate support vertical rod; 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; 401, main beam supporting pole, 402, secondary beam supporting pole, 403, node secondary beam supporting pole; 50. Support seat. DETAILED DESCRIPTION

[0039] 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.

[0040] 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 .

[0041] 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 .

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] If a shared frame structure for beams and slabs is adopted, there is a situation where the beam line load is too large and the bearing capacity of the disc of the hook bracket is insufficient, and the bearing capacity of the bracket support system cannot meet the requirements; if an independent frame structure for beams and slabs 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 of the hook bracket cannot meet the requirements and the stability of the hook 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 hook bracket will be greatly increased.

[0047] 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.

[0048] In view of the construction structure characteristics of this project, the following difficulties were found in the re-erection structure of the disc-shaped bracket support system of this project: 1) There is a conflict between the position of the plate support upright and the beam top support seat; 2) The layout of the secondary beam support structure is difficult at the intersection of the main beam, secondary beam and column; 3) The stability of the double-jointed channel steel in the disc-shaped bracket support system is difficult to guarantee.

[0049] 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.

[0050] This structural setting can effectively solve the problem that the bearing capacity of the support beam in the existing buckle 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 buckle disc, making the buckle bracket support system simple to erect and highly safe.

[0051] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9In some embodiments of the present invention, a subway station beam, slab and column construction support system is used for the construction of beams, slabs and columns at the intersection of the main beam, the secondary beam and the column, and includes: The basic support unit is a formed disc bracket structure; Set up the unit again, including: The main beam support unit is provided in two groups, which are respectively provided on both sides of the column to be formed, including a main beam support column 401 erected on the basic support unit, a plurality of main beam double-jointed channel steels 101 sequentially erected on the brackets of the main beam support columns along the main beam setting direction, a conversion double-jointed channel steel 103 erected on the disc of the node secondary beam support column, a conversion support column erected on the conversion double-jointed channel steel, and a node main beam double-jointed channel steel erected on the conversion support column; Secondary beam support unit, the secondary beam support unit is set in two groups, respectively set on both sides of the column, including secondary beam support uprights 402 erected on the basic support unit, node secondary beam support uprights 403 erected on the basic support unit, and secondary beam double-jointed channel steels 102 sequentially erected on the secondary beam support uprights 401 and the brackets 50 of the node secondary beam support uprights 403 along the secondary beam setting direction; The plate support unit includes a plate support upright 106 erected on the foundation support unit, a main beam-plate support upright 108 located on both sides of the main beam and respectively erected on the main beam double-jointed channel steel, and a secondary beam-plate support upright 107 located on both sides of the secondary beam and respectively erected on the secondary beam double-jointed channel steel; the main beam-plate support upright 108 and the secondary beam-plate support upright 107 are staggered with the brackets 50 of the main beam support upright 401, the secondary beam support upright 402, and the node secondary beam support upright 403, respectively.

[0052] At the intersection of the main beam, secondary beam and column, conversion double-jointed channel steel 103 and conversion support upright 105 are arranged, which effectively solves the problems of interference and excessive hanging length in the re-erection of the buckle bracket at the intersection of the main beam, secondary beam and column.

[0053] In some embodiments, the support seat 50 of the conversion support pole 105 is supported and arranged on the conversion double-piece channel steel 103 and is clamped and matched with the conversion double-piece channel steel 103. The two ends of the node main beam double-piece channel steel 104 are respectively mounted on the disc of the conversion support pole 105. The middle support of the node main beam double-piece channel steel 104 is arranged on the support seat 50 of the main beam support pole 401 located between the two node secondary beam support poles 403. Figure 7 shown.

[0054] By adjusting the direction of the conversion support uprights on both sides of the main beam, the bracket supports of the conversion support uprights are set on the conversion double-jointed channel steels. At the same time, the brackets of the main beam support uprights are used to clamp and support the conversion double-jointed channel steels. The conversion structures form mutual clamping connections, making the bracket system simple to set up and highly safe. It can be used in construction conditions with arbitrary height differences between the main and secondary beams and has great application value.

[0055] In some embodiments, the conversion support uprights 105 are staggered from the node secondary beam support uprights 403 and are arranged close to the main beam.

[0056] In some embodiments, the main beam-slab support posts 108 and the secondary beam-slab support posts 107 are staggered with the brackets of the main beam support posts and the secondary beam support posts by 0.1-0.3 m. For example, the staggered distance is set to 0.2 m, which optimizes the distribution of load while ensuring the stability of the support structure.

[0057] In some embodiments, the main beam double channel steel 101, the secondary beam double channel steel 102, the conversion double channel steel 103, and the node main beam double channel steel 104 include two channel steels arranged side by side with a spacing.

[0058] In some embodiments, the node secondary beam support upright 403 is arranged between the two channel steels of the conversion double-jointed channel steel, and the conversion support upright 105 is arranged between the two channel steels of the node main beam double-jointed channel steel 104.

[0059] In some embodiments, the two channel steels of the main beam double channel steel 101 and the secondary beam double channel steel 102 are respectively arranged side by side and spaced apart on the brackets 50 of the main beam support uprights 401, the secondary beam support uprights 402 and the node secondary beam support uprights 403.

[0060] In some embodiments, a main beam secondary rib 201 is provided on the main beam double-jointed channel steel 101 and the node main beam double-jointed channel steel 104; A secondary beam secondary rib 202 is set on the secondary beam double channel steel 102; The main plate ribs 203 are arranged on the brackets 50 of the plate supporting uprights 106 , the secondary beam-plate supporting uprights 107 and the main beam-plate supporting uprights 108 , and the secondary plate ribs 204 are arranged on the main plate ribs 203 .

[0061] The following takes the construction steps of the disc bracket system of a subway station as an example to explain in detail the structure and erection method of the beam-slab-column bracket system of the present invention. Figures 10 to 18 , 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.

[0062] 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.

[0063] 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.

[0064] The foundation structure adopts reinforced concrete foundation, and the base is directly set on the foundation structure without laying a pad in the middle.

[0065] Insert the short end of the conversion base into the adjustable base and install the conversion base on the adjustable base respectively.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] Adjustable brackets are installed on the top of the vertical pole and the bottom support rod of the beam respectively.

[0072] At this point, the complete foundation support unit is erected.

[0073] 5. Set up the buckle bracket again Along the main beam setting direction, main beam double-jointed channel steels 101 are respectively installed on the brackets 50 of the main beam support uprights 401; A conversion double-jointed channel steel 103 is set on the disk of the node secondary beam support pole 403, and the two conversion double-jointed channel steels 103 are respectively located on both sides of the secondary beam, and two conversion support poles 105 are relatively set on the conversion double-jointed channel steel 103, and the support seat 50 of the conversion support pole 105 is supported and set on the conversion double-jointed channel steel 103, and the node main beam double-jointed channel steel 104 is set on the disk of the conversion support pole 105, and the node main beam double-jointed channel steel 104 is set on the support seat 50 of the main beam support pole 401 located between the two node secondary beam support poles, as shown in FIG. Figure 7 As shown; A plate supporting upright 106 is set on the upright of the foundation supporting unit, a main beam-plate supporting upright 108 is set on the main beam double channel steel 101, and a secondary beam-plate supporting upright 107 is set on the secondary beam double channel steel 102; the main beam-plate supporting upright 108 and the secondary beam-plate supporting upright 107 are staggered with the brackets of the main beam supporting upright 401, the secondary beam supporting upright 402 and the node secondary beam supporting upright 403 respectively.

[0074] Complete the installation of the disc bracket and then install the unit again.

[0075] The double-jointed channel steel here is composed of two channel steels, for example, [8 channel steel can be used; the two channel steels are arranged on a bracket, and the setting spacing between the two channel steels is limited by the bracket.

[0076] 6. Wooden formwork erection The main plate ribs 203 are set on the plate supporting uprights 106, the secondary beam-plate supporting uprights 107 and the main beam-plate supporting uprights 108, and the secondary plate ribs 204 are set on the main plate ribs 203; the main plate ribs 203 are arranged along the secondary beam direction, and the secondary plate ribs 204 are arranged along the main beam direction.

[0077] Lay the main beam secondary rib 201 on the main beam double-jointed channel steel 101 and the node main beam double-jointed channel steel; Lay the secondary beam secondary rib 202 on the secondary beam double channel steel 102; 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.

[0078] 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.

[0079] 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 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 2376 nodes, 3896 beam units, and 984 plate units was established. Fig.19 .

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 152.55Mpa, which was less than the allowable value of 300Mpa; the stress value of the double-jointed channel steel beam was 69.78Mpa, which was less than the allowable value of 215Mpa; the maximum load of the bracket was 63.23kN, which was less than the allowable bearing capacity of the bracket of 140kN; the maximum shear force on the supporting vertical pole disc was 15.9kN, 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.

[0084] 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.

[0085] By adopting the disc-shaped bracket 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 subway station beam, slab and column construction support system is used for the construction of beams, slabs and columns at the intersection of the main beam, secondary beam and column. 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 is provided in two groups, which are respectively provided on both sides of the column, including a main beam support column mounted on the basic support unit, a plurality of main beam double-jointed channel steels sequentially mounted on the brackets of the main beam support column along the main beam setting direction, a conversion double-jointed channel steel mounted on the disk of the node secondary beam support column, a conversion support column mounted on the conversion double-jointed channel steel, and a node main beam double-jointed channel steel mounted on the conversion support column; Secondary beam support units, the secondary beam support units are arranged in two groups, respectively arranged on both sides of the column, including secondary beam support uprights erected on the basic support units, node secondary beam support uprights erected on the basic support units, and secondary beam double-jointed channel steels sequentially erected on the secondary beam support uprights and the support seats of the node secondary beam support uprights along the secondary beam setting direction; The plate support unit includes plate support uprights erected on the foundation support unit, main beam-plate support uprights located on both sides of the main beam and respectively erected on the main beam double-jointed channel steels, and secondary beam-plate support uprights located on both sides of the secondary beam and respectively erected on the secondary beam double-jointed channel steels; the main beam-plate support uprights and secondary beam-plate support uprights are staggered with the support seats of the main beam support uprights, the secondary beam support uprights, and the node secondary beam support uprights, respectively.

2. The subway station beam, slab and column construction support system according to claim 1 is characterized in that: The support seat of the conversion support upright is set on the conversion double-jointed channel steel and is clipped with the conversion double-jointed channel steel. The two ends of the node main beam double-jointed channel steel are respectively placed on the disks of the conversion support upright. The middle support of the node main beam double-jointed channel steel is set on the support seat of the main beam support upright located between the two node secondary beam support uprights.

3. The subway station beam, slab and column construction support system according to claim 1 is characterized in that: The conversion support uprights are staggered with the node secondary beam support uprights and are arranged at positions close to the main beam.

4. The subway station beam, slab and column construction support system according to claim 1 is characterized in that: The main beam-slab support uprights and the secondary beam-slab support uprights are staggered with the support bases of the main beam support uprights and the secondary beam support uprights at intervals of 0.1-0.3m.

5. The subway station beam, slab and column construction support system according to claim 1 is characterized in that: The main beam double-jointed channel steel, the secondary beam double-jointed channel steel, the conversion double-jointed channel steel, and the node main beam double-jointed channel steel include two channel steels arranged side by side with an interval.

6. The subway station beam, slab and column construction support system according to claim 5, characterized in that: The node secondary beam support upright is arranged between the two channel steels of the conversion double-jointed channel steel, and the conversion support upright is arranged between the two channel steels of the node main beam double-jointed channel steel.

7. The subway station beam, slab and column construction support system according to claim 5, characterized in that: The two channel steels of the main beam double-jointed channel steel and the secondary beam double-jointed channel steel are respectively arranged side by side and spaced apart on the supporting seats of the main beam supporting uprights, the secondary beam supporting uprights and the node secondary beam supporting uprights.

8. The subway station beam, slab and column construction support system according to claim 1, characterized in that: The secondary ribs of the main beam are arranged on the double-jointed channel steels of the main beam and the double-jointed channel steels of the node main beams; A secondary beam secondary rib is set on the 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 and the main beam-plate supporting uprights, and secondary plate ribs are arranged on the main plate ribs.

9. A method for erecting a support system for beam, slab and column construction of a subway station, characterized in that: Re-erecting on the foundation support unit to form a re-erecting unit for the construction of beams, slabs and columns at the intersection nodes of the main beams, secondary beams and columns, includes 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; A conversion double-jointed channel steel is set on the disk of the node secondary beam support pole, and the two conversion double-jointed channel steels are respectively located on both sides of the secondary beam, and two conversion support poles are relatively set on the conversion double-jointed channel steel, and the support of the conversion support pole is set on the conversion double-jointed channel steel, and the node main beam double-jointed channel steel is set on the disk of the conversion support pole, and the node main beam double-jointed channel steel is set on the support of the main beam support pole located between the two node secondary beam support poles; Plate support poles are set on the poles of the foundation support unit, main beam-plate support poles are set on the main beam double-jointed channel steel, and secondary beam-plate support poles are set on the secondary beam double-jointed channel steel; the main beam-plate support poles and secondary beam-plate support poles are staggered with the support seats of the main beam support poles, secondary beam support poles and node secondary beam support poles respectively.

10. The method for erecting a subway station beam, slab and column construction support system according to claim 9, characterized in that: The main slab ribs are set up on the support bases of the slab support posts, the secondary beam-slab support posts and the main beam-slab support posts, and the 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 and node main beam double-jointed channel steel; Lay the secondary beam secondary ribs on the 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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