Fabricated steel and concrete mixed herringbone hollow folded plate latticed shell structure

Abstract

The utility model discloses a fabricated steel and concrete mixed herringbone hollow folded plate latticed shell structure, and relates to the field of buildings. The fabricated steel and concrete mixed herringbone hollow folded plate reticulated shell structure comprises a roof reticulated shell structure, a plurality of steel bar truss prefabricated plates and a cast-in-place concrete surface layer which are arranged from bottom to top, and the roof reticulated shell structure comprises a herringbone roof structure or a fold-line-shaped roof structure formed by connecting at least two hollow folded plate reticulated shells. An edge beam and a plurality of supporting columns for supporting the edge beam are arranged on the edge of the hollow folded plate reticulated shell; the open-web folded plate latticed shell is formed by splicing a plurality of open-web folded plate grid units, each open-web folded plate grid unit comprises a lower chord rib rod, an upper chord rib rod and two shear-resistant steel plates connecting the lower chord rib rod and the upper chord rib rod, and the top of the upper chord rib rod of each open-web folded plate grid unit is connected with the steel bar truss prefabricated plate. According to the fabricated steel and concrete mixed herringbone hollow folded plate latticed shell structure, the building space utilization rate and the fabricated part ratio are increased, the template consumption is low, the structural rigidity and strength are kept, and the construction cost is saved.

Description

Technical Field

[0001] The present application relates to the field of construction, and in particular to an assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure. Background Art

[0002] The commonly used structural forms of gable roofs are ordinary beam-slab structures or triangular reinforced concrete truss structures. Load-bearing walls, frame beams or triangular trusses are set under the ridge to support the ridge, which wastes the usable space of the top floor of the building, resulting in the inability to form an effective large space under the gable roof. In addition, when pouring large areas of concrete during construction, the flow of concrete is difficult to control, resulting in more cold joints, and quality problems such as the density of concrete are difficult to solve.

[0003] The patent with application number 201721810459.3 discloses an assembled large-span concrete double-slope gridshell roof structure, which effectively solves the flow problem when pouring roof concrete. Its roof adopts prefabricated composite panels to increase the net space under the roof structure. However, the prefabrication ratio of the above structure is not high, and the roof dense rib beams still need to be cast on site, which requires a large amount of templates and labor costs. The roof is a dense rib grid, and the grid size between the dense rib beams is too dense. At the same time, the size of the dense rib beams in the longitudinal direction and the span direction is consistent, resulting in a large dense rib beam component and a large self-weight, which ultimately causes a large horizontal thrust in the span direction. Various mechanical and electrical pipelines of the roof are still arranged under the dense rib beams, and it is still necessary to set up a suspended ceiling or exposed pipelines; due to the crack resistance requirements of the concrete dense rib beams, the reinforcement is large, which is only suitable for small and medium span roofs and has poor economic efficiency.

[0004] Therefore, a roof structure with high building space utilization rate, large proportion of prefabricated assembly parts, high structural strength and good economic effect is needed. Utility Model Content

[0005] The purpose of the present application is to provide an assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure, which improves the building space utilization rate and the assembled component ratio, maintains the structural rigidity and strength while saving construction costs.

[0006] This application is implemented as follows:

[0007] The present application provides an assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure, which includes a roof lattice shell structure, a plurality of steel bar truss precast panels and a cast-in-place concrete surface layer laid above each steel bar truss precast panel, the roof lattice shell structure includes a herringbone roof structure composed of two hollow folded plate lattice shells connected together or a plurality of herringbone roof structures connected in sequence, the foot of the hollow folded plate lattice shell and both ends are respectively provided with side beams and a plurality of supporting columns supporting the side beams; the hollow folded plate lattice shell is composed of a plurality of hollow folded plate grid units spliced ​​together, each hollow folded plate grid unit includes a lower chord rib bar, an upper chord rib bar arranged above the lower chord rib bar and two shear-resistant steel plates, the two shear-resistant steel plates are respectively connected to one end of the lower chord rib bar and the upper chord rib bar to form a U-shaped hollow folded plate grid unit, and the top of the upper chord rib bar of each hollow folded plate grid unit is connected to one side of a steel bar truss precast panel.

[0008] In some optional embodiments, both the lower chord ribs and the upper chord ribs include a rib steel plate with a U-shaped cross section, a steel cage disposed in the rib steel plate, and a concrete layer filled in the rib steel plate.

[0009] In some optional embodiments, both ends of the rib steel plate located in the middle of the hollow folded plate lattice shell are respectively processed into isosceles right triangle connecting parts, and every four adjacent hollow folded plate grid units located in the middle of the hollow folded plate lattice shell are arranged in a cross shape and connected by two cross steel pads, and the two cross steel pads are respectively connected to the connecting parts of the lower chord ribs and the upper chord ribs in the four adjacent hollow folded plate grid units by bolts.

[0010] In some optional embodiments, the lower chord rib bars and the upper chord rib bars in the hollow folded plate grid units located at the edge of the hollow folded plate lattice shell are respectively connected to the embedded angle steels in the edge beams or support columns by bolts.

[0011] In some optional implementation schemes, vertically arranged reinforcing steel plates are respectively welded to the tops of both ends of the rib steel plates of the upper chord ribs.

[0012] In some optional embodiments, a plurality of prefabricated plate steel bars are embedded in the steel truss prefabricated plate, and the steel cage of each upper chord rib includes a plurality of open stirrups, and the tops of the open stirrups are connected to the face steel bars of the corresponding upper chord rib.

[0013] In some optional embodiments, a plurality of steel bar supports and a plurality of truss connecting bars are provided on the top of the steel bar truss prefabricated panel, the bottom of the steel bar support is buried in the steel bar truss prefabricated panel and connected to at least one prefabricated panel steel bar, and each truss connecting bar is connected to the top of the plurality of steel bar supports.

[0014] In some optional embodiments, at least one truss reinforcing rib is connected between two adjacent truss connecting ribs.

[0015] The beneficial effects of the present application are as follows: the assembled steel and concrete hybrid herringbone hollow folded plate grid shell structure provided by the present application includes a roof grid shell structure, a plurality of steel truss precast panels and a cast-in-place concrete surface layer laid above each steel truss precast panel, the roof grid shell structure includes a herringbone roof structure composed of two hollow folded plate grid shells connected together or a plurality of herringbone roof structures connected in sequence, the slope foot and both ends of the hollow folded plate grid shell are respectively provided with side beams and a plurality of supporting columns supporting the side beams; the hollow folded plate grid shell is composed of a plurality of hollow folded plate grid units spliced ​​together, each hollow folded plate grid unit includes a lower chord rib bar, an upper chord rib bar arranged above the lower chord rib bar and two shear-resistant steel plates, the two shear-resistant steel plates are respectively connected to one end of the lower chord rib bar and the upper chord rib bar to form a U-shaped hollow folded plate grid unit, and the top of the upper chord rib bar of each hollow folded plate grid unit is connected to one side of a steel truss precast panel. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in the present application effectively improves the utilization rate of the building space at the bottom of the roof beam, and adopts two prefabricated components and increases the ratio of assembled components to 98%, while maintaining the structural rigidity and strength, effectively improving the construction efficiency, reducing the construction period and saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic structural diagram of the first perspective of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application when the steel truss prefabricated plate and the cast-in-place concrete surface layer are omitted;

[0018] Figure 2 A schematic structural diagram of a second perspective of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application when the steel truss prefabricated plate and the cast-in-place concrete surface layer are omitted;

[0019] Figure 3 A sectional view of a cross section of a prefabricated steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application;

[0020] Figure 4 It is a structural schematic diagram of the third perspective when the prefabricated steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application is omitted from the steel truss prefabricated plate and the cast-in-place concrete surface layer;

[0021] Figure 5A schematic diagram of a local structure in which four cross-shaped hollow folded plate grid units in the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application are connected to each other and to four corresponding steel truss prefabricated panels and cast-in-place concrete surface layers;

[0022] Figure 6 A schematic diagram of the exploded structure of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application, in which four cross-shaped hollow folded plate grid units are connected to each other and to four corresponding steel truss prefabricated panels and cast-in-place concrete surface layers;

[0023] Figure 7 A schematic diagram of the structure of a prefabricated steel truss plate in an assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application;

[0024] Figure 8 A schematic structural diagram of a hollow folded plate grid unit in the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application;

[0025] Fig. 9 A schematic diagram of the local structure of a hollow folded plate grid unit in the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application;

[0026] Fig.10 A schematic cross-sectional structure diagram of the connection between the hollow folded plate grid unit and the edge beam or support column in the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 1 of the present application;

[0027] Fig.11 For along Fig.10 Section view of the AA section line;

[0028] Fig.12 A schematic diagram of the structure of a prefabricated steel truss plate in an assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in another embodiment of the present application;

[0029] Fig.13 A schematic structural diagram of the first perspective of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 2 of the present application when the steel truss precast plate and the cast-in-place concrete surface layer are omitted;

[0030] Fig.14 A sectional view of a cross section of a prefabricated steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 2 of the present application;

[0031] Fig.15This is a structural schematic diagram from a second perspective of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in Example 2 of the present application when the steel truss precast panels and the cast-in-place concrete surface layer are omitted.

[0032] In the figure: 100, hollow folded plate lattice shell; 110, side beam; 111, frame beam; 120, support column; 130, hollow folded plate grid unit; 131, lower chord rib; 132, upper chord rib; 133, shear steel plate; 134, rib steel plate; 135, steel cage; 136, concrete layer; 137, connection; 138, open stirrups; 139, lower stirrups; 140, cross steel pad; 150, embedded angle steel; 160, reinforcement steel plate; 170, lower chord angle steel; 180, upper chord angle steel; 190, additional steel bar; 200, steel truss precast plate; 210, precast plate steel bar; 220, steel support; 230, truss connecting bar; 240, truss reinforcement bar; 300, cast-in-place concrete surface layer. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, 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.

[0038] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] The characteristics and performance of the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure of the present application are further described in detail below in conjunction with the embodiments.

[0041] Example 1

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, the embodiment of the present application provides an assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure, which includes a roof lattice shell structure, a steel truss prefabricated plate 200 arranged at intervals, and a cast-in-place concrete surface layer 300 laid on each steel truss prefabricated plate 200. The roof lattice shell structure includes a herringbone roof structure composed of two hollow folded plate lattice shells 100 connected to each other on one side. The connecting side of the two hollow folded plate lattice shells 100 is a ridge line. Each hollow folded plate lattice shell 100 is composed of hollow folded plate grid units 130 assembled together. The hollow folded plate grid shell 100 is composed of a hollow folded plate grid unit 130, the top of the upper chord rib rod 132 is connected to one side of a steel truss prefabricated plate 200; the hollow folded plate grid shell 100 is provided with side beams 110 at the foot of the slope and both ends of the gable, and the side beams 110 at the foot of the hollow folded plate grid shell 100 are connected to six support columns 120 arranged at intervals, and the side beams 110 at both ends of the gable of the hollow folded plate grid shell 100 are connected to three support columns 120, and the three support columns 120 at both ends of the gable of the hollow folded plate grid shell 100 are connected with a frame beam 111;

[0043] Among them, each hollow folded plate grid unit 130 includes a lower chord rib rod 131, an upper chord rib rod 132 arranged above the lower chord rib rod 131 and two shear steel plates 133. The two shear steel plates 133 are respectively connected to one end of the lower chord rib rod 131 and the upper chord rib rod 132 to form a U-shaped hollow folded plate grid unit 130. The top of the upper chord rib rod 132 of each hollow folded plate grid unit 130 is connected to one side of two adjacent steel truss precast panels 200. The steel truss precast panels 200 are embedded with precast panel steel bars 210 arranged at intervals. The precast panel steel bars 210 embedded in each steel truss precast panel 200 pass through the top of the corresponding upper chord rib rod 132 and are tied and connected with the precast panel steel bars 210 embedded in the adjacent steel truss precast panels 200. The lower chord ribs 131 and the upper chord ribs 132 each include a rib steel plate 134 with a U-shaped cross section, a steel cage 135 disposed in the rib steel plate 134, and a concrete layer 136 filled in the rib steel plate 134. Vertically arranged shear steel plates 133 are respectively welded to the top of both ends of the rib steel plate 134 of the lower chord rib 131; the steel cage 135 of the lower chord rib 131 includes seven lower chord stress-bearing steel bars and lower stirrups 139 which are arranged at intervals and wrap around each lower chord stress-bearing steel bar. The top of the two ends of the rib steel plate 134 of the upper chord rib 132 are respectively welded with a vertically arranged reinforcing steel plate 160, and the bottom of the two ends of the rib steel plate 134 of the upper chord rib 132 is welded with the vertically arranged shear steel plate 133 to finally form a U-shaped hollow folded plate grid unit 130; the steel cage 135 of the upper chord rib 132 includes four upper chord stress steel bars and open stirrups 138 arranged at intervals and wrapping each upper chord stress steel bar, and the top of the open stirrup 138 is connected to the face steel bar and stirrup cap of the corresponding upper chord rib 132; the two ends of the rib steel plate 134 of the upper chord rib 132 and the lower chord rib 131 located in the middle of the hollow folded plate grid shell 100 are respectively connected A connecting portion 137 of a horizontally arranged isosceles right triangle is connected, and every four adjacent hollow folded plate grid units 130 located in the middle of the hollow folded plate grid shell 100 are arranged in a cross shape and connected by two cross steel pads 140. The two cross steel pads 140 are respectively connected to the four connecting portions 137 of the lower chord rib rods 131 and the four connecting portions 137 of the upper chord rib rods 132 in the four adjacent hollow folded plate grid units 130 by bolts, the lower chord rib rods 131 of two adjacent hollow folded plate grid units 130 are connected by a lower chord angle steel 170, and the upper chord rib rods 132 of two adjacent hollow folded plate grid units 130 are connected by an upper chord angle steel 180. The lower chord ribs 131 and the upper chord ribs 132 in the hollow folded plate grid unit 130 located at the edge of the hollow folded plate lattice shell 100 are respectively connected to the corresponding embedded angle steels 150 in the side beams 110 or support columns 120 by bolts, and additional steel bars 190 are also arranged at intervals at the embedded angle steels 150 in the side beams 110 or support columns 120.

[0044] Three rows of steel bar supports 220 and three truss connecting bars 230 are provided on the top of the steel bar truss prefabricated panel 200, each row includes nineteen steel bar supports 220 arranged at intervals, the bottom of each steel bar support 220 is buried in the steel bar truss prefabricated panel 200 and connected to a prefabricated panel steel bar 210, and each truss connecting bar 230 is connected to the top of a row of steel bar supports 220.

[0045] In this embodiment, the assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure has a floor height of 10m, a structural projection plane of 24.5m×42.5m, and a building area of ​​1041.25m 2 , the total building height is 15m. The hollow folded plate lattice shell 100 has a lattice rise of 5m, a thickness of 1.0m, a height-to-span ratio of 1 / 4.8, and a support column 120 with a spacing of 8.4m is set in the longitudinal direction of the hollow folded plate lattice shell 100. A support column 120 is set at the midpoint of one side of the gable, and the height of the support column 120 is 10m. The cross section of the side beam 110 is a rectangle of 500mm×1200mm;

[0046] The width a of the hollow folded plate grid unit 130 is 2600 mm, the length b is 2800 mm, and the height h is 1000 mm, wherein the width of the lower chord rib 131 is 400 mm, the height is 250 mm, and the rib steel plate of the lower chord rib 131 is 8 mm thick; the width of the upper chord rib 132 is 400 mm, the height of the prefabricated U-shaped plate is 120 mm, and the rib steel plate of the upper chord rib 132 is 6 mm thick; the height of the steel truss prefabricated plate 200 is 60 mm, and the thickness of the cast-in-place concrete surface layer 300 is 70 mm; the distance between the cast-in-place concrete surface layer 300 and the splicing cross node is 250 mm, the cross steel pad 140 is 10 mm thick, the thickness of the lower chord angle steel 170, the upper chord angle steel 180 and the embedded angle steel 150 are all 8 mm, and the corresponding plates are all connected with equal strength.

[0047] The construction method of the above-mentioned assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure provided in the embodiment of the present application comprises the following steps:

[0048] S1. According to the structural construction template drawing, the assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure is divided into 1.5m to 3.0m grid units, and the hollow grid cross-intersection nodes are the joints between the hollow folded plate grid units 130 in the shape of a Chinese character U, and the spatial three-dimensional coordinates of each hollow folded plate grid unit 130 are measured and laid out at the project site;

[0049] S2, transport the finished components to the site, hoist the corresponding hollow folded plate grid unit 130 according to the hollow grid cross node position of each hollow folded plate lattice shell 100, and use the cross steel pad 140 to fix the connection 137 of the corresponding lower chord rib rod 131 and the upper chord rib rod 132 with high-strength bolts, use the lower chord angle steel 170 to fix and strengthen the connection between the outer sides of the ends of the lower chord rib rod 131, and use the cross steel pad 140 to fix and strengthen the connection between the outer sides of the ends of the upper chord rib rod 132. The upper chord angle steel 180 is used to fix and strengthen the connection; the lower chord rib rod 131 and the upper chord rib rod 132 in the hollow folded plate grid unit 130 located at the edge of the hollow folded plate grid shell 100 are respectively connected to the embedded angle steel 150 in the corresponding side beam 110 or support column 120 by bolts, and then the steel bars are bent and anchored into the corresponding side beam 110 or support column 120; finally, the cross-shaped secondary casting space at the joint of the lower chord rib rod 131 in the hollow folded plate grid unit 130 is cast and cured;

[0050] S3, hoist the steel truss precast plate 200, tie the post-cast layer steel bars, steel bar caps and cast-in-place surface layer steel bars on the top of the upper chord ribs 132, pour the concrete of the cast-in-place concrete surface layer 300 and the side beams 110, and integrally cast the secondary pouring space at the joint of the upper chord ribs 132 in the hollow folded plate grid unit 130, and complete the curing.

[0051] like Fig.12 As shown, in other optional embodiments, at least one truss reinforcement rib 240 is connected between two adjacent truss connecting ribs 230, and the connection between two adjacent truss connecting ribs 230, one or more truss reinforcement ribs 240, can effectively improve the structural strength and stability of the steel truss formed by the truss connecting ribs 230 and the steel support 220.

[0052] Example 2

[0053] like Fig.13 , Fig.14 and Fig.15 As shown, the embodiment of the present application provides an assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure, which is roughly the same as the structure of the assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure in Example 1, except that, in this embodiment, the roof lattice shell structure includes two herringbone roof structures connected in sequence, each herringbone roof structure includes two hollow folded plate lattice shells 100 connected to each other on one side, and no support column 120 is provided in the gable direction. It is used for a platform canopy project of a medium-sized railway station, and is rectangular with a long side of 48.0m and a short side of 33.6m. The total building height is 15m. The plan view is shown in detail. Fig.14 , see the cross-section diagram Fig.15 .

[0054] The assembled steel and concrete mixed herringbone hollow folded plate grid shell structure of the embodiment of the present application is now used to build a railway station platform canopy, and the specific steps are as follows: first, two herringbone roof structures with continuous spans of 2×24m are set in the long side direction, and reinforced concrete support columns 120 with a spacing of 8.4 meters are set along the 33.6-meter short side direction. The grid shell rise is 5m, and the grid shell height-span ratio is 1 / 4.8. The top of the herringbone roof structure can be open according to the grid corresponding to the direction of train travel. The remaining specific implementation steps are the same as those in Example 1.

[0055] Through calculation and comparison, compared with the traditional large-span prestressed triangular reinforced concrete platform canopy, the assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure provided in the embodiment of the present application saves 98% of the formwork and 78% of the construction period, which can effectively reduce the difficulty and construction period of the secondary deepening design and construction of prestressed. The hollow folded plate lattice shell 100 realizes the full assembly of the roof, each prefabricated component is single, and the on-site construction speed is fast, which can meet the needs of various newly built small and medium-sized railway station platform canopies or subway elevated station projects.

[0056] The thickness of the hollow folded plate lattice shell 100 is selected to be 1.0m, which is about 1 / 24 of the span of 24.0m; the cross section of the cast-in-place edge beam 110 is 500mm×1200mm;

[0057] In the hollow folded plate grid unit 130, a=2600mm, b=2800mm, the height of the hollow sandwich plate h=1000mm, wherein the width of the lower chord rib 6 is b=400mm, the height h1=250mm, and the U-shaped steel plate of the lower chord rib 131 is 8mm thick; the width of the upper chord rib 132 is b=400mm, the total height h3=250mm, the height h4=120mm, and the U-shaped steel plate of the upper chord rib 132 is 6mm thick; h5=60mm of the steel truss prefabricated plate 200, and the thickness of the cast-in-place concrete surface layer 300 is h6=70mm; the distance between the post-cast concrete at both ends and the splicing cross node is 250mm, the cross steel pad 140 is 10mm thick, the thickness of the lower chord angle steel 170, the upper chord angle steel 180 and the embedded angle steel 150 are all 8mm thick, and the corresponding plates are all connected with equal strength.

[0058] Compared with the traditional cast-in-place reinforced concrete gable roof frame structure, the assembly ratio can be 98%, saving 98% of formwork, 78% of construction time, and 40% of construction cost. The hollow grid size is consistent, the grid is beautiful, the number and size of each prefabricated component are uniform, and the production, transportation, hoisting and assembly operations are simple, which effectively improves the application process of assembly construction, improves production efficiency, and saves time and cost.

[0059] The assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure provided in the embodiment of the present application has the following beneficial effects:

[0060] (1) Compared with the common beam-slab structure and triangular reinforced concrete truss structure of the traditional gable roof, the present invention effectively improves the utilization rate of the building space at the bottom of the roof beam, and the hollow part can pass through various mechanical and electrical pipelines. The grid is beautiful and has a uniform size standard, and no suspended ceiling is required, which is suitable for large-span roof buildings.

[0061] (2) The herringbone hollow folded plate lattice shell structure realizes full assembly of all components, with an assembly ratio of up to 98%, saving 98% of formwork, and only needs to support the side beams 110 and the support columns 120 at the construction site; there are only two prefabricated components, namely, the U-shaped hollow folded plate grid unit 130 and the steel truss prefabricated plate 200. Among them, the U-shaped hollow folded plate grid unit 130 has a unified component size standard, and the factory processing and construction site assembly process are simple to operate, and the component transportation cost is low; it can effectively improve the efficiency of workers and save 78% of the construction period.

[0062] (3) Both ends of the U-shaped hollow folded plate grid unit 130 are provided with shear-resistant steel plates 133, and the roof structure is simple, symmetrical, uniform in quality, and clear in force flow. Four combined U-shaped hollow folded plate grid units 130 are connected to form a cross node, which increases the shear stiffness of the connection node.

[0063] (4) The rib steel plates 134 in the lower chord ribs 131 and the upper chord ribs 132 in the U-shaped hollow folded plate grid unit 130 have stronger crack resistance than traditional precast concrete rib beams, and are particularly suitable for large-span gable roof buildings.

[0064] (5) This prefabricated steel and concrete mixed herringbone hollow folded plate lattice shell structure has the advantages of high overall stiffness, good wind and earthquake resistance, and excellent economy.

[0065] The embodiment of the present application provides an assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure system which can be applied to large-span industrial buildings and public buildings such as university, middle and primary school halls, auditoriums, weatherproof playgrounds, activity centers, cultural and sports centers, conference centers, antique buildings, railway station buildings, platform canopies, elevated subway stations, warehouses, storage depots, and residences.

[0066] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. An assembled steel and concrete mixed herringbone hollow folded plate lattice shell structure, characterized in that: It includes a roof grid shell structure, a plurality of steel bar truss precast panels and a cast-in-place concrete surface layer laid above each of the steel bar truss precast panels, the roof grid shell structure includes a gable roof structure composed of two hollow folded plate grid shells connected together or a plurality of the gable roof structures connected in sequence, the slope foot and both ends of the hollow folded plate grid shell are respectively provided with side beams and a plurality of supporting columns supporting the side beams; the hollow folded plate grid shell is composed of a plurality of hollow folded plate grid units spliced ​​together, each of the hollow folded plate grid units includes a lower chord rib bar, an upper chord rib bar arranged above the lower chord rib bar and two shear-resistant steel plates, the two shear-resistant steel plates are respectively connected to one end of the lower chord rib bar and the upper chord rib bar to form a hollow folded plate grid unit in the shape of a U-shaped hollow folded plate, and the top of the upper chord rib bar of each hollow folded plate grid unit is connected to one side of a steel bar truss precast panel.

2. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 1 is characterized in that: The lower chord rib bar and the upper chord rib bar both include a rib bar steel plate with a U-shaped cross section, a steel cage arranged in the rib bar steel plate, and a concrete layer filled in the rib bar steel plate.

3. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 2 is characterized in that: Both ends of the rib steel plate located in the middle of the hollow folded plate lattice shell are respectively processed into isosceles right triangle connecting parts, and every four adjacent hollow folded plate grid units located in the middle of the hollow folded plate lattice shell are arranged in a cross shape and connected by two cross steel pads, and the two cross steel pads are respectively connected to the connecting parts of the lower chord ribs and the upper chord ribs in the four adjacent hollow folded plate grid units by bolts.

4. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 2 is characterized in that: The lower chord rib bars and the upper chord rib bars in the hollow folded plate grid units located at the edge of the hollow folded plate lattice shell are respectively connected to the embedded angle steels in the edge beams or the support columns through bolts.

5. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 2 is characterized in that: Vertically arranged reinforcing steel plates are respectively welded to the tops of both ends of the rib steel plates of the upper chord rib.

6. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 2 is characterized in that: A plurality of prefabricated plate steel bars are embedded in the steel truss prefabricated plate, and the steel cage of each upper chord rib comprises a plurality of open stirrups, the tops of which are connected to the face steel bars corresponding to the upper chord ribs.

7. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 6 is characterized in that: The top of the steel bar truss prefabricated panel is provided with a plurality of steel bar supports and a plurality of truss connecting bars, the bottom of the steel bar support is buried in the steel bar truss prefabricated panel and connected to at least one of the prefabricated panel steel bars, and each of the truss connecting bars is connected to the tops of the plurality of steel bar supports.

8. The assembled steel and concrete hybrid herringbone hollow folded plate lattice shell structure according to claim 7 is characterized in that: At least one truss reinforcing rib is connected between two adjacent truss connecting ribs.

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