A V-shaped different-column and cantilever connection structure and its construction method

Abstract

A V-shaped column with different columns and its construction method for overhanging connection. It stands at the bottom on the main structure, and the main structure includes each front row of frame columns and each rear row of frame columns. The connection structure includes a V-shaped column and an overhanging connection structure. The V-shaped column is located in a vertical plane and includes a group of V-shaped column units continuously arranged and connected into one body on the front-side longitudinal edge column axis. The overhanging connection structure is a double-layer support frame arranged separately, including a low frame and a high frame. The low frame is fixedly connected to the V-shaped column unit, and the high frame is hingedly connected to the V-shaped column unit. The low frame is a platform frame for both construction and viewing, and the high frame is a construction frame for both construction of the eaves. The construction corridor is fixedly connected to the bottom of the high frame. In the front side low end of the present invention, a V-shaped column with different columns located in the same vertical plane is designed to realize the front-side support for the beam string structure and balance the smaller negative moment of the front-side support. A permanent double-layer overhanging structure is designed on the column side, which can effectively increase the bending bearing capacity of the structure and make it more stable and safe.

Description

Technical Field

[0001] The invention belongs to the field of steel structure roofs, and particularly relates to a V-shaped different-column and cantilever connection structure and a construction method thereof. Background Technique

[0002] Steel structure installation projects with a span of 36m or more, or grid and cable-membrane structure installation projects with a span of 60m or more are super-dangerous and large steel structure projects. Especially when the main building is a steel-concrete structure with unequal heights on the front and back sides, the low-end frame columns being traditional steel structure columns or concrete columns can no longer meet the support requirements for the roof cable-truss structure in super-dangerous and large steel structure projects, resulting in great difficulties in the force design of the overall steel roof structure and the construction of steel structures. Especially when a cantilever structure needs to be designed on the low-end column side, the cantilever structure is prone to bending deformation. In the case of long spans or large loads, single-layer cantilever structures are prone to problems such as excessive deflection and insufficient tension, leading to instability or damage of the entire structure. How the cantilever structure and the low-end steel structure column can simultaneously meet the force design and ensure the safety of steel structure construction has become the difficulty and key point of construction. Summary of the Invention

[0003] The purpose of the invention is to provide a V-shaped different-column and cantilever connection structure and a construction method thereof, which can solve the technical problems that when the main structure is a steel-concrete structure with unequal heights on the front and back sides, the low-end frame columns being traditional steel structure columns or concrete columns can no longer meet the support requirements for the roof cable-truss structure in super-dangerous and large steel structure projects, resulting in great difficulties in the force design of the overall steel roof structure and the construction of steel structures, and at the same time solve the technical problem of the coordinated force of the cantilever structure designed on the column side and the structural column.

[0004] To achieve the above purpose, the invention adopts the following technical solutions:

[0005] A V-shaped different-column and cantilever connection structure stands on the main structure at the bottom. The main structure includes each front-row frame column and each rear-row frame column. Among them, the front-row frame columns are located on the corresponding front-side longitudinal edge column axes of the main structure, and the rear-row frame columns are located on the corresponding rear-side longitudinal edge column axes of the main structure. The column tops of the main structure are arranged in a staggered manner, and the elevation of the front-row frame columns is lower than that of the rear-row frame columns. The connection structure includes a V-shaped column and a cantilever connection structure. A roof cable-truss structure is supported between the V-shaped column and the rear-row frame column.

[0006] The V-shaped column is located in a vertical plane, and includes a group of V-shaped column units that are continuously arranged on the front longitudinal edge column axis and connected as a whole. The column foot nodes of the V-shaped column units are hinged to the column tops of the front frame columns one by one. Each V-shaped column unit includes two left-right symmetrical oblique column rods. The bottom ends of the two oblique column rods are fixedly connected to the same column foot node. The top ends of the oblique column rods of two adjacent V-shaped column units are fixedly connected to the column top node of the same oblique column rod. The column top node is a V-shaped column connection node.

[0007] The main structure also includes frame beams, including column top frame beams and column body frame beams, wherein the column top frame beams are hinged between column top nodes of adjacent V-shaped column units, the column body frame beams are arranged along the longitudinal length and are located directly below the column top frame beams, and the column body frame beams are located between the rod sides of adjacent oblique column rods, and the two ends of the column body frame beams are respectively fixedly connected to the rod bodies of adjacent oblique column rods.

[0008] The V-shaped column unit also includes a column connecting beam, which is also located between the rod sides of adjacent oblique column rods, and has two ends respectively hinged to the rod bodies of the oblique column rods, and the column connecting beam is located directly below the column frame beam.

[0009] The cantilever connection structure is a double-layer support frame that is separately arranged, including a low frame and an elevated frame. The low frame is fixedly connected to the V-shaped column unit, and the elevated frame is hingedly connected to the V-shaped column unit. The low frame is a dual-purpose platform frame for construction and viewing, and the elevated frame is a dual-purpose construction frame for construction eaves. The construction corridor is fixedly connected to the bottom of the elevated frame.

[0010] The column foot node of the V-shaped column unit is a cast steel column foot, which is hinged to the column top of the front frame column through a self-stabilizing basin-type ball joint support. The front frame column is a steel-concrete column or a reinforced concrete column.

[0011] The self-stabilizing basin-type ball joint support is fixedly connected to the top surface of the embedded plate embedded in the center of the column top plane, and the top surface of the embedded plate is flush with the column top plane. The self-stabilizing basin-type ball joint support includes a support body and a surrounding self-stabilizing fixed group plate. The surrounding self-stabilizing fixed group plate is a total of six pieces, which are evenly distributed on the surrounding surfaces of the support body. The surrounding self-stabilizing fixed group plate is a rectangular group plate, whose top surface is flush with the top surface of the support body, whose bottom surface is fixedly connected to the embedded plate, and whose inner surface is fixedly connected to the outer surface of the support body.

[0012] The low frame includes a low frame diagonal rod and a low frame horizontal rod.

[0013] The low-frame diagonal rods are arranged in groups of two, tilted outward toward the vertical plane where the V-shaped column is located, and arranged one-to-one with the diagonal column rods. The bottom end of each group of low-frame diagonal rods is also fixedly connected to the column foot node of the corresponding V-shaped column unit.

[0014] The low-level horizontal bars are grouped in pairs and are arranged in one-to-one correspondence with the low-level diagonal bars. Their outer ends are fixedly connected to the tops of the low-level diagonal bars, and their inner ends are fixedly connected to the front side of the rod body of the diagonal column bar.

[0015] The low-level structure also includes a low-level connecting group beam provided between adjacent low-level structures. The low-level connecting group beam includes a low-level longitudinal main connecting beam and a low-level transverse secondary connecting beam. Among them, the low-level horizontal bar, the low-level longitudinal main connecting beam, the low-level transverse secondary connecting beam, and the column body frame beam are located in the same horizontal plane.

[0016] There are two low-level longitudinal main connecting beams in total. Their two ends are respectively fixedly connected between adjacent low-level horizontal bars, including a first main connecting beam and a second main connecting beam. The two ends of the first main connecting beam are fixedly connected between the outer ends of adjacent low-level horizontal bars, and the two ends of the second main connecting beam are fixedly connected between the inner ends of adjacent low-level horizontal bars and in front of the column body frame beam.

[0017] The two ends of the low-level transverse secondary connecting beam are respectively fixedly connected between the middle parts of the first main connecting beam and the second main connecting beam.

[0018] The high-level structure is in a C shape and includes high-level diagonal bars, high-level side bars, and high-level horizontal bars. The high-level diagonal bars, high-level side bars, and high-level horizontal bars are located in the same vertical plane. This vertical plane corresponds to the V-shaped column unit one by one and is arranged on the vertical plane where the center line of the V-shaped column unit is located. The two ends of the high-level side bar are respectively fixedly connected between the top end of the high-level diagonal bar and the outer end of the high-level horizontal bar. The inner end of the high-level horizontal bar is hinged to the column top node, and the bottom end of the high-level diagonal bar is hinged to the center of the column body connecting beam.

[0019] The high-level structure also includes a high-level connecting group beam provided between adjacent high-level structures. The high-level connecting group beam includes a high-level longitudinal main connecting beam and a high-level transverse secondary connecting beam.

[0020] There are three high-level longitudinal main connecting beams in total, namely the upper connecting beam, the middle connecting beam, and the lower connecting beam.

[0021] Among them, the column top frame beam, the high-level horizontal bar, the upper connecting beam, and the high-level transverse secondary connecting beam are located in the same horizontal plane. The two ends of the upper connecting beam are respectively fixedly connected between the outer ends of adjacent high-level horizontal bars. The two ends of the high-level transverse secondary connecting beam are respectively fixedly connected between the center of the corresponding upper connecting beam and the center of the column top frame beam. The two ends of the middle connecting beam are respectively fixedly connected between the middle parts of adjacent high-level side bars. The two ends of the lower connecting beam are respectively fixedly connected between the bottom ends of adjacent high-level side bars.

[0022] The column body connecting beam includes an inner connecting beam located inside the V-shaped column unit and an outer connecting beam located between the V-shaped column units. The bottom end of the high-level diagonal bar is hinged to the center of the outer connecting beam. The column body frame beam includes an inner frame beam located inside the V-shaped column unit and an outer frame beam located between the V-shaped column units.

[0023] A construction method for the connection structure between a V-shaped different-column and a cantilever, characterized in that the construction steps are as follows:

[0024] Step 1, the column foot node, the inclined column rod, the column body connecting beam and the column body frame beam are processed into installation units in the factory, and are respectively assembled into a lower-section installation unit, an upper-section installation unit, a column body connecting beam installation unit and a column body frame beam installation unit. The lower-section installation unit includes the lower half of the inclined column rod of the V-shaped column unit and the inner frame beam. The upper-section installation unit includes an inverted V-shaped frame formed by connecting the upper halves of the inclined column rods of two adjacent V-shaped column units through the same column top. The upper-section installation unit also includes an outer connecting beam;

[0025] Step 2, first construct the main structure; then construct the column foot node at the column top of the front row of frame columns;

[0026] Step 3, arrange lower-section installation unit support frames at intervals corresponding to the positions of the column foot nodes, insert each lower-section installation unit into the unit support frame, and then connect each lower-section installation unit with each column foot node;

[0027] Step 4, connect the column body frame beam installation units, i.e., the outer frame beams, between the lower-section installation units;

[0028] Step 5, install a low frame between the V-shaped column units;

[0029] Step 6, arrange upper-section installation unit support frames at intervals at the positions between the column foot nodes, and tie and fix the upper-section installation unit support frames and the lower-section installation unit support frames;

[0030] Step 7, hoist the upper-section installation unit, fixedly connect it with the lower-section installation unit, and at the same time, the upper-section installation unit is also tied and fixed with the upper-section installation unit support frame;

[0031] Step 8, install the column body connecting beam installation unit, i.e., the inner connecting beam;

[0032] Step 9, install a high frame corresponding to the V-shaped column unit;

[0033] Step 10, repeat construction steps 3 to 9 until all V-shaped column units and cantilever structures are constructed.

[0034] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0035] The present invention utilizes the structure of front and rear side unequal-height frame columns. The rear side frame column is used as a support, and the reaction moment of the support is larger than that of the front side frame column. The V-shaped different-column with the front side at the lower end is designed in the same vertical plane to realize the front side support for the cable-strut beam structure, balance the smaller reaction moment of the front side support, and meet the ultra-dangerous and large project of the roof steel structure.

[0036] In order to increase the overall stress area of the front bottom frame columns, the present invention adopts V-shaped different columns as support columns. After setting the V-shaped different columns, the inclination of the inclined column rods will cause asymmetric loads, resulting in greater stress at the column feet of the V-shaped different columns. Therefore, a strengthening design is carried out at the column foot positions. The V-shaped different columns are integrally connected into a surface, forming stress waves that cooperate with each other to increase the vertical bearing capacity and horizontal lateral force resistance of the overall frame columns on this side.

[0037] The present invention designs a permanent double-layer cantilever structure on the column side, which can effectively increase the flexural bearing capacity of the structure, making it more stable and safe. The upper-layer cantilever structure provides a rooting position for the construction corridor and at the same time serves as the eaves structure, and the lower-layer cantilever structure is a platform during construction and an observation platform during the building decoration stage. The force transmission of the present invention is clear, and the connection positions of each structure are designed as hinges as much as possible. Through the ingenious design of the hinge points, the stress relationship of the overall roof structure is satisfied, realizing the simplification in the subsequent construction process. Brief Description of the Drawings

[0038] The following further describes the present invention in detail with reference to the drawings.

[0039] Figure 1 It is a schematic structural diagram of the present invention.

[0040] Figure 2 is Figure 1 The partial enlarged view in

[0041] Figure 3 It is a schematic structural diagram of the V-shaped column unit.

[0042] Figure 4 It is a connection schematic diagram of the V-shaped column unit.

[0043] Figure 5 is Figure 4 The partial enlarged view in

[0044] Figure 6 is Figure 4 The low-frame enlarged view in

[0045] Figure 7 It is a detailed low-frame enlarged view.

[0046] Figure 8 is Figure 4 The high-frame enlarged view in

[0047] Figure 9 is the high-frame detailed enlarged Figure 1 .

[0048] Figure 10 is the high-frame detailed enlarged Figure 2 .

[0049] Figure 11Schematic diagram showing the completion of the third construction step of the V-shaped column unit of the present invention.

[0050] Figure 12 Schematic diagram showing the completion of the fourth construction step of the V-shaped column unit of the present invention.

[0051] Figure 13 Schematic diagram showing the completion of the seventh construction step of the V-shaped column unit of the present invention.

[0052] Figure 14 Schematic diagram showing the completion of the eighth construction step of the V-shaped column unit of the present invention.

[0053] Figure 15 Schematic diagram of the self-stabilizing and fixing strengthening structure of the column foot.

[0054] Figure 16 Is Figure 15 The plan structure diagram of.

[0055] Reference numerals: 1 - front row frame column, 2 - rear row frame column, 3 - V-shaped column unit, 31 - inclined column rod, 32 - column body connecting beam, 321 - inner connecting beam, 322 - outer connecting beam, 4 - column foot node, 5 - column top node, 6 - column top frame beam, 7 - column body frame beam, 71 - inner frame beam, 72 - outer frame beam, 8 - low rack, 81 - low rack inclined rod, 82 - low rack horizontal rod, 83 - low rack longitudinal main connecting beam, 831 - first main connecting beam, 832 - second main connecting beam, 84 - low rack transverse secondary connecting beam, 9 - high rack, 91 - high rack inclined rod, 92 - high rack side rod, 93 - high rack horizontal rod, 94 - high rack longitudinal main connecting beam, 941 - high connecting beam, 942 - middle connecting beam, 943 - low connecting beam, 95 - high rack transverse secondary connecting beam, 10 - roof cable-strut structure, 11 - construction corridor, 12 - embedded plate, 13 - support body, 14 - surrounding self-stabilizing and fixing group plate, 15 - lower section installation unit, 16 - upper section installation unit. Detailed implementation manners

[0056] For the embodiment, refer to Figure 1-2 As shown, a V-shaped different-column and cantilever connection structure stands on the main structure at the bottom. The main structure includes each front row frame column 1 and each rear row frame column 2. Among them, the front row frame column 1 is located on the corresponding front-side longitudinal edge column axis of the main structure, and the rear row frame column 2 is located on the corresponding rear-side longitudinal edge column axis of the main structure. The column tops of the main structure are arranged in a staggered manner, and the elevation of the front row frame column 1 is lower than that of the rear row frame column 2. The connection structure includes a V-shaped column and a cantilever connection structure. A roof cable-strut structure 10 is supported between the V-shaped column and the rear row frame column 2.

[0057] The V-shaped column is located in a vertical plane and includes a group of V-shaped column units 3 that are continuously arranged and connected into one body on the front-side longitudinal edge column axis. The column foot nodes 4 of the V-shaped column units 3 are respectively hinged to the column tops of the front row frame columns 1.

[0058] See Figure 15-16 As shown, the column base joint 4 of the V-shaped column unit 3 is a cast steel column base, which is hinged to the top of the front row frame column 1 through a self-stabilizing pot type spherical hinge bearing. The front row frame column 1 is a steel reinforced concrete column or a reinforced concrete column. The self-stabilizing pot type spherical hinge bearing is fixedly connected to the top surface of the embedded plate 12 embedded in the center within the column top plane. The top surface of the embedded plate 12 is flush with the column top plane. The self-stabilizing pot type spherical hinge bearing includes a bearing body 13 and a surrounding self-stabilizing fixed group plate 14. There are six surrounding self-stabilizing fixed group plates 14, which are evenly distributed on the peripheral surface of the bearing body 13. The surrounding self-stabilizing fixed group plate 14 is a rectangular group plate, whose top surface is flush with the top surface of the bearing body 13, whose bottom surface is fixedly connected to the embedded plate 12, and whose inner surface is fixedly connected to the outer surface of the bearing body 13. In actual construction, the surrounding self-stabilizing fixed group plate 14 can be cut off after the installation of the superstructure of the bearing is completed.

[0059] See Figure 3-4 As shown, each V-shaped column unit 3 includes two symmetrically arranged inclined column bars 31 on the left and right. The bottom ends of the two inclined column bars 31 are fixedly connected to the same column base joint 4, and the top ends of the inclined column bars 31 of two adjacent V-shaped column units 3 are fixedly connected to the column top joint 5 of the same inclined column bar.

[0060] See Figure 3-10 As shown, the main structure also includes each frame beam, including a column top frame beam 6 and a column body frame beam 7. Among them, the column top frame beam 6 is hinged between the column top joints 5 of adjacent V-shaped column units. The column body frame beam 7 is arranged longitudinally throughout and is located directly below the column top frame beam 6. The column body frame beam 7 is located between the rod sides of adjacent inclined column bars 31, and both ends are fixedly connected to the rod bodies of adjacent inclined column bars 31 respectively.

[0061] The V-shaped column unit also includes a column body connecting beam 32. The column body connecting beam 32 is also located between the rod sides of adjacent inclined column bars 31, and both ends are respectively hinged to the rod bodies of the inclined column bars 31. The column body connecting beam 32 is located directly below the column body frame beam 7.

[0062] The cantilever connection structure is a double-layer support frame arranged separately, including a low frame 8 and a high frame 9. The low frame 8 is fixedly connected to the V-shaped column unit 3, and the high frame 9 is hinged to the V-shaped column unit 3. The low frame 8 is a platform frame for both construction and viewing, and the high frame 9 is a construction frame for both construction and eaves. The construction corridor 11 is fixedly connected to the bottom of the high frame.

[0063] See Figure 5-7As shown, the low rack 8 includes low rack diagonal rods 81 and low rack horizontal rods 82. The low rack diagonal rods 81 are grouped in pairs of two, inclined outward towards the vertical plane where the V-shaped columns are located, and are arranged in one-to-one correspondence with the inclined column rods 31. The bottom ends of each pair of low rack diagonal rods 81 are also fixedly connected to the column foot nodes 4 of the corresponding V-shaped column units 3. The low rack horizontal rods 82 are grouped in pairs of two, arranged in one-to-one correspondence with the low rack diagonal rods 81. The outer ends thereof are fixedly connected to the rod tops of the low rack diagonal rods 81, and the inner ends thereof are fixedly connected to the front sides of the rod bodies of the inclined column rods 31.

[0064] The low rack 8 further includes a low rack connecting group beam provided between adjacent low racks. The low rack connecting group beam includes a low rack longitudinal main connecting beam 83 and a low rack transverse secondary connecting beam 84. Among them, the low rack horizontal rod 82, the low rack longitudinal main connecting beam 83, the low rack transverse secondary connecting beam 84, and the column body frame beam 7 are located in the same horizontal plane.

[0065] There are two low rack longitudinal main connecting beams 83 in total. The two ends thereof are respectively fixedly connected between adjacent low rack horizontal rods 82, and include a first main connecting beam 831 and a second main connecting beam 832. The two ends of the first main connecting beam 831 are fixedly connected between the outer ends of adjacent low rack horizontal rods 82, and the two ends of the second main connecting beam 832 are fixedly connected between the inner ends of adjacent low rack horizontal rods 82 and in front of the column body frame beam 7.

[0066] The two ends of the low rack transverse secondary connecting beam 84 are respectively fixedly connected between the middles of the first main connecting beam 831 and the second main connecting beam 832.

[0067] See Figure 5 、 9 As shown in Fig. -10, the high rack 9 is in a C shape and includes high rack diagonal rods 91, high rack side rods 92, and high rack horizontal rods 93. The high rack diagonal rods 91, high rack side rods 92, and high rack horizontal rods 93 are located in the same vertical plane. This vertical plane corresponds to the V-shaped column unit 3 one by one and is arranged on the vertical plane where the midline of the V-shaped column unit 3 is located. The two ends of the high rack side rod 92 are respectively fixedly connected between the top end of the high rack diagonal rod 91 and the outer end of the high rack horizontal rod 93. The inner end of the high rack horizontal rod 93 is hinged to the column top node 5, and the bottom end of the high rack diagonal rod 91 is hinged to the center of the column body connecting beam 32.

[0068] The elevated structure 9 further includes an elevated connecting girder group provided between adjacent elevated structures. The elevated connecting girder group includes an elevated longitudinal main connecting girder 94 and an elevated transverse secondary connecting girder 95. There are three elevated longitudinal main connecting girders 94 in total, namely a high connecting girder 941, a middle connecting girder 942, and a low connecting girder 943. Among them, the column top frame beam 6, the elevated horizontal bar 93, the high connecting girder 941, and the elevated transverse secondary connecting girder 95 are located in the same horizontal plane. The two ends of the high connecting girder 941 are respectively fixedly connected between the outer ends of adjacent elevated horizontal bars 93. The two ends of the elevated transverse secondary connecting girder 95 are respectively fixedly connected between the center of the corresponding high connecting girder 941 and the center of the column top frame beam 6. The two ends of the middle connecting girder 942 are respectively fixedly connected between the middle parts of adjacent elevated side bars 92. The two ends of the low connecting girder 943 are respectively fixedly connected between the bottom ends of adjacent elevated side bars 92.

[0069] The column body connecting beam 32 includes an inner connecting beam 321 located within the V-shaped column unit and an outer connecting beam 322 located between the V-shaped column units. The bottom end of the elevated diagonal bar 91 is hinged to the center of the outer connecting beam 322. The column body frame beam 7 includes an inner frame beam 71 located within the V-shaped column unit and an outer frame beam 72 located between the V-shaped column units.

[0070] The construction method of this V-shaped different-column and cantilever connection structure is as follows:

[0071] Step 1: The column foot node 4, the inclined column bar 31, the column body connecting beam 32, and the column body frame beam 7 are processed into installation units in the factory and assembled into a lower section installation unit 15, an upper section installation unit 16, a column body connecting beam installation unit, and a column body frame beam installation unit respectively. The lower section installation unit 15 includes the lower half of the inclined column bar of the V-shaped column unit and the inner frame beam 71. The upper section installation unit includes an inverted V-shaped frame formed by connecting the upper halves of the inclined column bars 31 of adjacent two V-shaped column units through the same column top node 5. The upper section installation unit 16 further includes the outer connecting beam 322.

[0072] Step 2: First, construct the main structure; then construct the column foot node 4 at the top of the front row frame column 1.

[0073] Step 3: Set up lower section installation unit support frames at intervals corresponding to the positions of the column foot nodes 4, insert each lower section installation unit into the unit support frames, and then connect each lower section installation unit 15 with each column foot node 4; see Figure 11 as shown.

[0074] Step 4: Connect the column body frame beam installation units, that is, the outer frame beams 72, between the lower section installation units; see Figure 12 as shown.

[0075] Step 5: Install the low structure 8 between the V-shaped column units.

[0076] Step 6: At intervals between the column base nodes 4, upper section installation unit support frames are provided, and the upper section installation unit support frames are connected and fixed to the lower section installation unit support frames.

[0077] Step 7: Lift and install the upper section installation unit 16, fixedly connect it to the lower section installation unit 15, and at the same time, the upper section installation unit 16 is also connected and fixed to the upper section installation unit support frame; see Figure 13 as shown.

[0078] Step 8: Install the column body connecting beam installation unit, i.e., the internal connecting beam 321; see Figure 14 as shown.

[0079] Step 9: Install the elevated rack 9 corresponding to the V-shaped column unit.

[0080] Step 10: Repeat construction steps 3 to 9 until the construction of all V-shaped column units and cantilever structures is completed.

Claims

1. A V-shaped different-column and cantilever connection structure, standing at the bottom on the main structure, the main structure includes each front-row frame column (1) and each rear-row frame column (2), wherein the front-row frame column (1) is located on the corresponding front-side longitudinal edge column axis of the main structure, and the rear-row frame column (2) is located on the corresponding rear-side longitudinal edge column axis of the main structure, and it is characterized in that: The column tops of the main structure are arranged in a staggered manner, with the elevation of the front row of frame columns (1) lower than that of the rear row of frame columns (2). The connection structure includes V-shaped columns and a cantilever connection structure. A roof cable-strut structure (10) is provided between the V-shaped columns and the rear row of frame columns (2). The V-shaped columns are located in a vertical plane and include a set of V-shaped column units (3) continuously arranged and connected as a whole on the front-side longitudinal edge column axis. The column foot nodes (4) of the V-shaped column units (3) are hinged to the column tops of the front row of frame columns (1) one by one. Each V-shaped column unit (3) includes two symmetrically arranged inclined column bars (31) on the left and right. The bottom ends of the two inclined column bars (31) are fixedly connected to the same column foot node (4), and the top ends of the inclined column bars (31) of adjacent V-shaped column units (3) are fixedly connected to the column top node (5) of the same inclined column bar. The main structure also includes each frame beam, including a column top frame beam (6) and a column body frame beam (7). Among them, the column top frame beam (6) is hinged between the column top nodes (5) of adjacent V-shaped column units. The column body frame beam (7) is arranged longitudinally throughout and is located directly below the column top frame beam (6). The column body frame beam (7) is located between the rod sides of adjacent inclined column bars (31), and both ends are fixedly connected to the rod bodies of the adjacent inclined column bars (31). The V-shaped column unit also includes a column body connecting beam (32). The column body connecting beam (32) is also located between the rod sides of adjacent inclined column bars (31), and both ends are hinged to the rod bodies of the inclined column bars (31). The column body connecting beam (32) is located directly below the column body frame beam (7). The cantilever connection structure is a double-layer support frame arranged separately, including a low frame (8) and a high frame (9). The low frame (8) is fixedly connected to the V-shaped column unit (3), and the high frame (9) is hingedly connected to the V-shaped column unit (3). The low frame (8) is a platform frame for both construction and viewing, and the high frame (9) is a construction frame for both construction and eaves. A construction corridor (11) is fixedly connected to the bottom of the high frame.

2. The V-shaped different columns and cantilever connection structure according to claim 1, characterized in that: The column foot node (4) of the V-shaped column unit (3) is a cast steel column foot, and the cast steel column foot is hinged to the column top of the front row of frame columns (1) through a self-stabilizing pot type spherical hinge bearing. The front row of frame columns (1) is a steel reinforced concrete column or a reinforced concrete column.

3. The V-shaped different columns and cantilever connection structure according to claim 2, wherein: The self-stabilizing pot type spherical hinge bearing is fixedly connected to the top surface of a pre-embedded plate (12) centrally pre-embedded in the column top plane. The top surface of the pre-embedded plate (12) is flush with the column top plane. The self-stabilizing pot type spherical hinge bearing includes a bearing body (13) and a surrounding self-stabilizing fixed group plate (14). There are a total of six surrounding self-stabilizing fixed group plates (14), which are evenly distributed on the peripheral surface of the bearing body (13). The surrounding self-stabilizing fixed group plate (14) is a rectangular group plate, whose top surface is flush with the top surface of the bearing body (13), whose bottom surface is fixedly connected to the pre-embedded plate (12), and whose inner surface is fixedly connected to the outer surface of the bearing body (13).

4. The V-shaped different columns and cantilever connection structure according to claim 1, characterized in that: The low frame (8) includes low frame inclined bars (81) and low frame horizontal bars (82). The low-frame diagonal bars (81) are arranged in groups of two, inclined outward towards the vertical plane where the V-shaped columns are located, and are arranged in one-to-one correspondence with the inclined column bars (31). The bottom ends of each group of low-frame diagonal bars (81) are also fixedly connected to the column foot nodes (4) of the corresponding V-shaped column unit (3). The low-frame horizontal bars (82) are arranged in groups of two, in one-to-one correspondence with the low-frame diagonal bars (81). The outer ends thereof are fixedly connected to the tops of the low-frame diagonal bars (81), and the inner ends thereof are fixedly connected to the front sides of the rod bodies of the inclined column bars (31).

5. The V-shaped different-column and cantilever connection structure according to claim 4, wherein: The low frame (8) further includes a low-frame connecting group beam provided between adjacent low frames. The low-frame connecting group beam includes a low-frame longitudinal main connecting beam (83) and a low-frame transverse secondary connecting beam (84). Among them, the low-frame horizontal bar (82), the low-frame longitudinal main connecting beam (83), the low-frame transverse secondary connecting beam (84), and the column body frame beam (7) are located in the same horizontal plane. There are two low-frame longitudinal main connecting beams (83) in total. The two ends thereof are respectively fixedly connected between adjacent low-frame horizontal bars (82), and include a first main connecting beam (831) and a second main connecting beam (832). The two ends of the first main connecting beam (831) are fixedly connected between the outer ends of adjacent low-frame horizontal bars (82), and the two ends of the second main connecting beam (832) are fixedly connected between the inner ends of adjacent low-frame horizontal bars (82) and in front of the column body frame beam (7). The two ends of the low-frame transverse secondary connecting beam (84) are respectively fixedly connected between the middles of the first main connecting beam (831) and the second main connecting beam (832).

6. The V-shaped different-column and cantilever connection structure according to claim 5, wherein: The high frame (9) is in a C shape and includes high-frame diagonal bars (91), high-frame side bars (92), and high-frame horizontal bars (93). The high-frame diagonal bars (91), high-frame side bars (92), and high-frame horizontal bars (93) are located in the same vertical plane. This vertical plane corresponds to the V-shaped column unit (3) one by one and is arranged on the vertical plane where the midline of the V-shaped column unit (3) is located. The two ends of the high-frame side bar (92) are respectively fixedly connected between the top end of the high-frame diagonal bar (91) and the outer end of the high-frame horizontal bar (93). The inner end of the high-frame horizontal bar (93) is hinged to the column top node (5), and the bottom end of the high-frame diagonal bar (91) is hinged to the center of the column body connecting beam (32).

7. The V-shaped different columns and cantilever connection structure according to claim 6, characterized in that: The high frame (9) further includes a high-frame connecting group beam provided between adjacent high frames. The high-frame connecting group beam includes a high-frame longitudinal main connecting beam (94) and a high-frame transverse secondary connecting beam (95). There are three high-frame longitudinal main connecting beams (94) in total, namely a high connecting beam (941), a middle connecting beam (942), and a low connecting beam (943). The column top frame beam (6), the elevated horizontal rod (93), the high connecting beam (941) and the elevated transverse secondary connecting beam (95) are located in the same horizontal plane, the two ends of the high connecting beam (941) are respectively fixedly connected between the outer ends of the adjacent elevated horizontal rods (93), the two ends of the elevated transverse secondary connecting beam (95) are respectively fixedly connected between the center of the corresponding high connecting beam (941) and the center of the column top frame beam (6), the two ends of the middle connecting beam (942) are respectively fixedly connected between the middle parts of the adjacent elevated side rods (92), and the two ends of the low connecting beam (943) are respectively fixedly connected between the bottom ends of the adjacent elevated side rods (92).

8. The V-shaped different columns and cantilever connection structure according to claim 7, characterized in that: The column shaft connecting beam (32) comprises an inner connecting beam (321) located in a V-shaped column unit and an outer connecting beam (322) located between the V-shaped column units; the bottom end of the elevated diagonal rod (91) is hinged at the center of the outer connecting beam (322); and the column shaft frame beam (7) comprises an inner frame beam (71) located in the V-shaped column unit and an outer frame beam (72) located between the V-shaped column units.

9. A construction method of the V-shaped different-column and cantilever connection structure according to claim 8, characterized in that, The construction steps are as follows: Step 1: The column foot node (4), the inclined column rod (31), the column shaft connecting beam (32) and the column shaft frame beam (7) are processed into installation units in a factory and respectively assembled into a lower section installation unit (15), an upper section installation unit (16), a column shaft connecting beam installation unit and a column shaft frame beam installation unit, wherein the lower section installation unit (15) includes the lower half of the inclined column rod of the V-shaped column unit and the inner frame beam (71), the upper section installation unit includes an inverted V-shaped frame in which the upper halves of the inclined column rods (31) of two adjacent V-shaped column units are connected via the same column top node (5), and the upper section installation unit (16) also includes an outer connecting beam (322); Step 2: First construct the main structure; then construct the column foot node (4) at the top of the front frame column (1); Step 3, setting the lower section installation unit support frame at intervals corresponding to the column foot nodes (4), inserting each lower section installation unit into the unit support frame, and then connecting each lower section installation unit (15) to each column foot node (4); Step 4, connecting the column frame beam installation units, i.e., the outer frame beams (72), between the lower section installation units; Step 5, installing the low frame (8) between the V-shaped column units; Step 6: an upper section installation unit support frame is arranged at intervals between the column foot nodes (4), and the upper section installation unit support frame is fastened and fixed to the lower section installation unit support frame; Step seven, hoisting the upper installation unit (16) and fixing it to the lower installation unit (15), and at the same time, the upper installation unit (16) is also fixed to the upper installation unit support frame; Step 8, installing the column connecting beam installation unit, i.e., the inner connecting beam (321); Step nine, installing the elevated frame (9) corresponding to the V-shaped column unit; Step 10: Repeat construction steps 3 to 9 until all V-shaped column units and cantilever structures are completed.

Images