Tree-shaped special column and cantilever connecting structure and construction method thereof

Abstract

A tree-shaped special column and cantilever connecting structure and its construction method, the bottom of which is erected on a main structure, the main structure including front and rear rows of frame columns, the connecting structure including a tree-shaped column and a cantilever connecting structure, the tree-shaped column including a group of tree-shaped column units continuously arranged on the column shafts of the rear row of frame columns and connected as a whole, and the cantilever connecting structure being a double-layer support frame arranged in two parts, including low and high supports according to the height of the arrangement position, and the low support being fixedly connected with the tree-shaped column unit. Two rows of columns are designed on the rear side, the top end structure of the middle column is designed as a three-dimensional tree-shaped special column, the rear side of the beam string structure is supported, the large bending moment of the rear side support is balanced, and the steel structure of the roof is satisfied with the super-dangerous large project. The permanent double-layer cantilever structure is designed on the side of the column, the bending bearing capacity of the structure is effectively increased, the stability and safety are improved, and the structure is more stable and safe.

Description

Technical Field

[0001] The invention belongs to the field of steel structure roofs, in particular to a tree-shaped special column and cantilever connection structure and a construction method thereof. Background Art

[0002] Steel structure installation projects with spans of 36m or more, or grid and cable-membrane structure installation projects with spans of 60m or more are classified as extremely dangerous steel structure projects. Especially when the main building structure is a steel-concrete structure with unequal heights on the front and back sides, the high-end frame columns, which are traditional steel or concrete columns, are no longer able to meet the requirements for supporting the roof string structure in extremely dangerous steel structure projects, resulting in significant difficulties in both the overall structural force design of the steel roof and the construction of the steel structure. In particular, when a cantilever structure is required on the high-end column side, the cantilever structure is prone to bending deformation. In the case of long spans or heavy loads, a single-layer cantilever structure is prone to problems such as excessive deflection and insufficient tension, which can lead to instability or damage to the entire structure. How the cantilever structure can simultaneously meet the force design requirements and ensure the safety of the steel structure construction together with the low-end steel columns has become a more difficult and key point in construction. Summary of the Invention

[0003] The purpose of the present invention is to provide a tree-shaped special column and cantilever connection structure and its construction method, in order to solve the technical problem that when the main structure is a steel-concrete structure with unequal heights on the front and rear sides, the high-end frame columns are traditional steel structure columns or concrete columns, which can no longer meet the requirements of the support of the roof string structure in super-dangerous steel structure projects, resulting in great difficulties in the overall structural force design of the steel roof and the construction of the steel structure. At the same time, it solves the technical problem of the coordinated force of the cantilever structure designed on the bottom column side and the structural column.

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

[0005] A tree-shaped column and cantilever connection structure, the bottom of which stands on the main structure, the main structure includes front frame columns, rear frame center columns and rear frame side columns, wherein the front frame columns are located on the corresponding front longitudinal edge column axes of the main structure, wherein the rear frame side columns are located on the corresponding rear longitudinal edge column axes of the main structure, and the rear frame center columns are located on the longitudinal column axes adjacent to the rear frame side columns. The column tops of the main structure are arranged in a staggered manner, and the elevations from low to high are the front frame columns, the rear frame center columns and the rear frame side columns. The connection structure includes tree-shaped columns and cantilever connection structures.

[0006] The main structure also includes frame beams, including column top frame beams and column body frame beams, wherein the column top frame beams are fixedly connected between the column tops of the rear row frame side columns, and the column body frame beams are fixedly connected between the column bodies of the rear row frame side columns.

[0007] The tree-shaped column comprises a set of tree-shaped column units arranged continuously on the column shafts of the rear-row frame middle columns and connected as a whole, the column foot nodes of the tree-shaped column units are hingedly connected to the column top nodes of the rear-row frame middle columns one by one,

[0008] Each tree-shaped column unit comprises a cross ribbed slab, a tree main beam, a tree connecting beam, a tree radial strut and a tree cross support strut,

[0009] The tree main beam comprises two horizontal parallel beams in the same plane,

[0010] The tree connecting beam comprises two vertical beams perpendicular to the tree main beam and located in the same plane, the two ends of the tree connecting beam are fixedly connected to the end portions of the left and right tree main beams to form a rectangular frame, the front end two corner connecting nodes of the rectangular frame are tree-shaped column connecting front nodes, and a roof cable-strut structure is arranged between the rear-row frame column and the tree-shaped column connecting front node,

[0011] The tree radial strut comprises four radial struts, the bottom ends of the four radial struts are fixedly connected to the same column foot node, and the top ends of the four radial struts are fixedly connected to the bottom portions of the four corner connecting positions of the rectangular frame to form the edges of an inverted four-sided pyramid,

[0012] The tree cross support strut is located in the same plane as the rectangular frame, the four end portions of the tree cross support strut are fixedly connected to the four corner connecting position nodes of the rectangular frame, adjacent two tree-shaped column units share one tree main beam, the tree connecting beam is divided into an inner tree connecting beam and an outer tree connecting beam, the outer tree connecting beam is located on the rear longitudinal edge column shaft, the middle portion of the beam bottom of the outer tree connecting beam is fixedly connected to the column top of the rear-row frame edge column, and the outer tree connecting beam forms a column top frame beam,

[0013] The cantilever connecting structure is a double-layer support frame arranged in two parts, and comprises a low frame and a high frame according to the height of the arrangement position, the low frame is fixedly connected to the tree-shaped column unit, the high frame is hingedly connected to the tree-shaped column unit, the low frame is a construction and viewing dual-purpose platform frame, the high frame is a construction eave dual-purpose construction frame, and a construction corridor is fixedly connected to the bottom portion of the high frame.

[0014] The column foot node of the tree-shaped column unit is a cast steel column foot, the cast steel column foot is hingedly connected to the column top of the rear-row frame middle column through a self-stabilizing basin-type spherical hinge support, the rear-row frame middle column is a steel reinforced concrete column or a reinforced concrete column, the lower half of the rear-row frame edge column is a rear-row lower column, the rear-row lower column is a steel reinforced concrete column or a reinforced concrete column, the upper half of the rear-row frame edge column is a rear-row upper column, the rear-row upper column is a steel column, and the cantilever connecting structure is arranged in the range of the rear-row upper column,

[0015] The column body frame beam is connected between the column bodies of the rear-row upper columns.

[0016] The self-stabilizing basin type spherical hinge support is fixedly connected to the top surface of the pre-embedded plate centrally embedded in the column top plane, the top surface of the pre-embedded plate is flush with the column top plane, the self-stabilizing basin type spherical hinge support comprises a support body and surrounding self-stabilizing fixed group plates, the surrounding self-stabilizing fixed group plates are six in total and are evenly distributed on the peripheral surface of the support body, the surrounding self-stabilizing fixed group plates are rectangular group plates, the top surface of the surrounding self-stabilizing fixed group plates is flush with the top surface of the support body, the bottom surface of the surrounding self-stabilizing fixed group plates is fixedly connected to the pre-embedded plate, and the inner side surface of the surrounding self-stabilizing fixed group plates is fixedly connected to the outer side surface of the support body.

[0017] The low-level frame comprises a low-level inclined strut group pole frame and a low-level horizontal pole frame, the low-level horizontal pole frame is located on the upper side of the low-level inclined strut group pole frame and is supported by the low-level inclined strut group pole frame,

[0018] The low-level inclined strut group pole frame comprises a lower layer inclined strut single pole, a horizontal transverse strut pole, a horizontal longitudinal strut pole and an upper layer bifurcated strut pole, the lower layer inclined strut single pole and the upper layer bifurcated strut pole are in Y shape as a whole, the lower layer inclined strut single pole, the horizontal transverse strut pole and the upper layer bifurcated strut pole are located in the same vertical plane,

[0019] The horizontal transverse strut pole and the horizontal longitudinal strut pole are located in the same horizontal plane, the horizontal longitudinal strut pole is arranged along the length of the rear side of the main body structure, the horizontal transverse strut pole is arranged in one-to-one correspondence with the rear row of frame edge columns, the inner end of the horizontal transverse strut pole is fixedly connected to the rear row of upper columns, and the two ends of the horizontal longitudinal strut pole are fixedly connected between the outer ends of adjacent horizontal transverse strut poles,

[0020] The bottom end of the lower layer inclined strut single pole is fixedly connected to the column foot part of the rear row of upper columns, and the top end of the lower layer inclined strut single pole is fixedly connected to the pole bottom of the horizontal transverse strut pole,

[0021] The upper layer bifurcated strut pole comprises a front fork pole and a rear fork pole, the top end of the front fork pole is fixedly connected to the column body of the rear row of upper columns and is above the horizontal transverse strut pole, the top end of the front fork pole is fixedly connected below the connection point of the low-level horizontal pole frame and the rear row of upper columns, the bottom end of the rear fork pole is fixedly connected to the bottom end of the front fork pole on the same connection point in the middle part of the top surface of the horizontal transverse strut pole, and the top end of the front fork pole is fixedly connected to the bottom surface of the low-level horizontal pole frame.

[0022] The column body frame beam comprises a column body upper beam and a column body lower beam, the two ends of the column body upper beam are hingedly connected to the column body of the rear row of upper columns, and the two ends of the column body lower beam are fixedly connected to the column body of the rear row of upper columns,

[0023] The low-level horizontal pole frame comprises a low-level transverse main beam, a low-level longitudinal main connecting beam and a low-level transverse secondary connecting beam, the low-level transverse main beam, the low-level longitudinal main connecting beam, the low-level transverse secondary connecting beam and the column body lower beam are located in the same horizontal plane,

[0024] The low-level transverse main beam is arranged in one-to-one correspondence with the rear frame side column, the top end of the rear fork rod is fixedly connected to the outer end of the bottom surface of the low-level transverse main beam, and the top end of the front fork rod is fixedly connected below the connecting point of the low-level transverse main beam and the rear upper column,

[0025] The low-level longitudinal main connecting beam is provided with two beams, and the two ends thereof are fixedly connected between adjacent low-level transverse main beams, the low-level longitudinal main connecting beam comprises an inner connecting beam and an outer connecting beam, the two ends of the inner connecting beam are fixedly connected between the inner ends of adjacent low-level transverse main beams and the outer side of the column body lower beam, and the two ends of the outer connecting beam are fixedly connected between the outer ends of adjacent low-level transverse main beams.

[0026] The high-level body is in a C shape and comprises a high-level inclined rod, a high-level side rod and a high-level horizontal rod, the high-level inclined rod, the high-level side rod and the high-level horizontal rod are located in a same vertical plane, the vertical plane is in one-to-one correspondence with the rear upper column and is arranged on the vertical plane where the center line of the rear upper column is located, the two ends of the high-level side rod are fixedly connected between the top end of the high-level inclined rod and the outer end of the front high-level horizontal rod, the inner end of the high-level horizontal rod is hingedly connected to the middle part of the column top frame beam and corresponds to the column top position of the rear upper column, and the bottom end of the high-level inclined rod is hingedly connected to the column body of the rear upper column.

[0027] The high-level body further comprises a high-level connecting group beam arranged between adjacent bodies, the high-level connecting group beam comprises a high-level longitudinal main connecting beam and a high-level transverse secondary connecting beam, the high-level longitudinal main connecting beam is provided with three beams, and the three beams are fixedly connected between adjacent two high-level side rods in the height direction of the high-level side rod and are respectively a high connecting beam, a middle connecting beam and a low connecting beam,

[0028] The column top frame beam, the high-level horizontal rod, the high connecting beam and the high-level transverse secondary connecting beam are located in a same horizontal plane, and the two ends of the high connecting beam are fixedly connected between the outer ends of adjacent high-level horizontal rods.

[0029] The column body upper beam is located directly above the column body lower beam, and the connecting positions of the two ends thereof are located on the inner side of the column body at the same height as the hinged position of the bottom end of the high-level inclined rod and the rear upper column.

[0030] The rear end corner connecting nodes of the tree-shaped column rectangular frame are tree-shaped column connecting rear nodes, the two ends of the high-level transverse secondary connecting beam are fixedly connected between the center of the corresponding high connecting beam and the column top frame beam, the inner end of the high-level transverse secondary connecting beam is fixedly connected to the tree-shaped column connecting rear node, and the outer end of the high-level transverse secondary connecting beam is fixedly connected to the center of the high connecting beam.

[0031] The two ends of the middle connecting beam are fixedly connected between the middle parts of adjacent high-level side rods, and the two ends of the low connecting beam are fixedly connected between the bottom ends of adjacent high-level side rods.

[0032] The construction method of the tree-shaped special column and cantilever connection structure has the following construction steps:

[0033] Step one, construction of the main structure;

[0034] Step two, construction of the rear row of lower columns and the rear row of frame middle columns;

[0035] Step three, construction of the rear row of upper columns and low frames;

[0036] Step four, construction of the column foot nodes of the tree-shaped column unit on the rear row of frame middle columns;

[0037] Step five, assembly of the tree-shaped column unit;

[0038] Step six, the tree-shaped special column is divided into two installation areas, i.e., a whole hoisting area for directly hoisting the tree-shaped column unit as a whole and a scattered supplemental area formed by connecting components between adjacent tree-shaped column units;

[0039] Step seven, after the tree-shaped column unit in the whole hoisting area is assembled on the ground according to steps one to six, two temporary support columns are arranged on the main structure, hoisting is performed outside the main structure field by a caterpillar crane, the bottom of the tree radial support rod of the tree-shaped column unit is connected with the column foot node on the rear row of frame middle columns, and then the tree connecting beam is connected with the rear row of upper columns;

[0040] Step eight, another tree-shaped column unit is constructed according to step seven, and then the components in the scattered supplemental area are installed between the two adjacent whole hoisting areas; after the supplemental installation is completed, hoisting of the next tree-shaped column unit is performed, the caterpillar crane is used in cooperation with the tower crane for installation, and the step is repeated until all the tree-shaped columns are installed;

[0041] Step nine, construction of the high frame.

[0042] The assembly of the tree-shaped column unit in step five has the following steps:

[0043] Step a, assembly platform measurement and line laying;

[0044] Step b, four assembly jig hoisting frames at four corner positions are arranged in place;

[0045] Step c, cross rib plate installation and positioning;

[0046] Step d, the tree main beam is hoisted and placed between the adjacent two assembly jigs;

[0047] Step e, the tree connecting beam is hoisted and placed between the tree main beams;

[0048] Step f, the tree radial support rod is hoisted and placed below the rectangular frame;

[0049] Step g, the tree cross support rod is hoisted and placed in the rectangular frame, and the assembly of the tree-shaped column unit is completed.

[0050] Compared with the prior art, the present application has the following characteristics and beneficial effects:

[0051] The present application utilizes the characteristics that the rear frame column has a larger counter-bending moment than the front frame column, and two rows of columns are designed on the rear side, the top structure of the middle column is designed as a three-dimensional tree-shaped special column, the stress of the whole structure of the tree-shaped special column is more uniform, the branch structure of the tree-shaped column can increase its stress area, so that it can bear larger load, increase the vertical bearing capacity and horizontal lateral force of the overall frame column on this side, realize the support of the rear side of the beam string structure, balance the larger counter-bending moment of the rear support, and meet the super-dangerous large project of the roof steel structure.

[0052] The present application designs a permanent double-layer cantilever structure on the side of the column, which can effectively increase the bending bearing capacity of the structure, so that it is more stable and safe. The side column is adaptively designed as a column body connection of different materials in upper and lower parts according to the range of the cantilever structure, the upper cantilever structure provides a rooting position for the construction corridor and at the same time is connected between the tree-shaped special column and the upper half of the side column, and the lower cantilever structure is a platform during construction and an observation platform during building decoration stage, and is only connected with the upper half of the side column. The present application has clear force transmission, and each structure connection position is designed as a hinge as much as possible, the stress relationship of the overall structure of the roof is met through the ingenious design of the hinge point, and the simplification in the subsequent construction process is realized. BRIEF DESCRIPTION OF DRAWINGS

[0053] The present application will be further described in detail below with reference to the accompanying drawings.

[0054] Figure 1 is a structural schematic diagram of the present application in an actual project.

[0055] Figure 2 is Figure 2 a local enlarged schematic diagram in

[0056] Figure 3 is Figure 2 another angle schematic diagram of

[0057] Figure 4 is a structural schematic diagram of a tree-shaped column unit.

[0058] Figure 5 is a connection structure schematic diagram of the tree-shaped column unit and the main structure and the roof beam string structure.

[0059] Figure 6 is a column foot schematic diagram of the tree-shaped column unit.

[0060] Figure 7 is a self-stable fixed reinforcement structure schematic diagram of the column foot.

[0061] Figure 8 isFigure 7 schematic view of the plan structure of

[0062] Figure 9 schematic view of the low-rise structure of

[0063] Figure 10 Figure 9 Figure 1

[0064] Figure 11 Figure 9

[0065] Figure 12 Figure 9 Figure 2

[0066] Figure 13 schematic view of the high-rise structure of

[0067] Figure 14 Figure 13

[0068] Figure 15

[0069] Figure 16

[0070] Figure 17

[0071] Figure 18

[0072] Figure 19

[0073] Figure 20

[0074] Figure 21

[0075] Figure 22

[0076] ​​​​​​​​​​​​​​​​​​Reference: 1 - front row frame column, 2 - rear row frame middle column, 3 - rear row frame edge column, 31 - rear row upper column, 32 - rear row lower column, 4 - tree column unit, 41 - cross rib plate, 42 - tree main beam, 43 - tree connecting beam, 431 - inner side tree connecting beam, 432 - outer side tree connecting beam, 44 - tree radial support rod, 45 - tree cross support rod, 5 - tree column connecting front node, 6 - column top frame beam, 7 - column body frame beam, 71 - column upper beam, 72 - column lower beam, 8 - low rack, 81 - lower layer diagonal single rod, 82 - horizontal transverse support rod, 83 - horizontal longitudinal support rod, 84 - upper layer bifurcated support rod, 841 - front fork rod, 842 - rear fork rod, 85 - low rack transverse main beam, 86 - low rack longitudinal main connecting beam, 861 - inner connecting beam, 862 - outer connecting beam, 87 - low rack transverse secondary connecting beam, 9 - high rack, 91 - high rack diagonal 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 structure, 11 - column foot node, 12 - embedded plate, 13 - support body, 14 - peripheral self-stabilizing fixed group plate, 15 - tree column connecting rear node, 16 - temporary support column, 17 - bulk filling area. DETAILED DESCRIPTION

[0077] Embodiments refer to Figures 1-3 As shown in the drawings, a tree-shaped special column and cantilever connection structure, standing on the main structure, the main structure includes each front row frame column 1, each rear row frame middle column 2 and each rear row frame edge column 3, wherein the front row frame column 1 is located on the corresponding front side longitudinal edge column axis of the main structure, wherein the rear row frame edge column 3 is located on the corresponding rear side longitudinal edge column axis of the main structure, and the rear row frame middle column 2 is located on the longitudinal column axis adjacent to the rear row frame edge column 3, the column top of the main structure is arranged in a scattered manner, and the elevation is in order from low to high, that is, the front row frame column 1, the rear row frame middle column 2 and the rear row frame edge column 3, and the connection structure includes a tree column and a cantilever connection structure.

[0078] The main structure further includes each frame beam, including a column top frame beam 6 and a column body frame beam 7, wherein the column top frame beam 6 is fixedly connected between the column top of each rear row frame edge column 3, and the column body frame beam 7 is fixedly connected between the column body of each rear row frame edge column 3.

[0079] Embodiments refer to Figures 4-6 As shown in the drawings, the tree column includes a group of tree column units 4 arranged continuously on the column axis of the rear row frame middle column 2 and connected as a whole, and the column foot node 11 of the tree column unit is hingedly connected to the column top of the rear row frame middle column 2 one by one,

[0080] Each tree column unit 4 comprises a cross rib 41, a tree main beam 42, a tree connecting beam 43, a tree radial strut 44 and a tree cross support 45. The tree main beam 42 is two transverse parallel beams in the same plane.

[0081] The tree connecting beam 43 is two longitudinal beams perpendicular to the tree main beam 42 and in the same plane, and the two ends of the tree connecting beam 43 are fixedly connected to the ends of the left and right tree main beams 42 to form a rectangular frame, and the front two corners of the rectangular frame are connected to the tree column connection front node 12. The roof cable-stayed structure 10 is arranged between the front row frame column 1 and the tree column connection front node 5.

[0082] The tree radial strut 44 is four radial struts, the bottom ends of which are fixedly connected to the same column foot node 11, and the top ends are fixedly connected to the bottom of the connection position of the four corners of the rectangular frame to form the edges of an inverted quadrangular pyramid.

[0083] The tree cross support 45 is in the same plane as the rectangular frame, and the four ends of the tree cross support 45 are fixedly connected to the nodes of the connection position of the four corners of the rectangular frame, wherein adjacent two tree column units 4 share a tree main beam 42, and the tree connecting beam 43 is divided into an inner tree connecting beam 431 and an outer tree connecting beam 432, wherein the outer tree connecting beam 432 is located on the rear longitudinal edge column shaft, and the beam bottom of the outer tree connecting beam 432 is fixedly connected to the top of the rear row frame edge column 3, and the outer tree connecting beam 432 forms a column top frame beam 6.

[0084] Referring to Figures 1-3 The column foot node 11 of the tree column unit 4 is a cast steel column foot, and the cast steel column foot and the top of the rear row frame middle column 2 are hingedly connected through a self-stabilizing basin-type spherical hinge support, the rear row frame middle column 2 is a steel reinforced concrete column or a reinforced concrete column, the lower half of the rear row frame edge column 3 is a rear row lower column 32, which is a steel reinforced concrete column or a reinforced concrete column, and the upper half of the rear row frame edge column 3 is a rear row upper column 31, which is a steel column. The overhanging connection structure is arranged in the range of the rear row upper column 31, and the column body frame beam is connected between the column bodies of the rear row upper columns.

[0085] Referring to Figures 7-8As shown, the self-stabilizing basin type spherical hinge support is fixedly connected to the top surface of the pre-embedded plate 12 centrally embedded in the column top plane, and the top surface of the pre-embedded plate 12 is flush with the column top plane. The self-stabilizing basin type spherical hinge support includes a support body 13 and surrounding self-stabilizing fixed group plates 14. There are six surrounding self-stabilizing fixed group plates 14, which are evenly distributed on the peripheral surface of the support body 13. The surrounding self-stabilizing fixed group plates 14 are rectangular group plates, whose top surface is flush with the top surface of the support body 13, whose bottom surface is fixedly connected to the pre-embedded plate 12, and whose inner side surface is fixedly connected to the outer side surface of the support body 13. In actual construction, the surrounding self-stabilizing fixed group plates 14 can be cut off after the upper structure of the support is installed.

[0086] Referring to Figures 1-3 As shown, the cantilever connection structure is a double-layer support frame arranged in two parts. According to the height of the setting position, it includes a low stand 8 and a high stand 9. The low stand 8 is fixedly connected to the tree-shaped column unit 4, and the high stand 9 is hingedly connected to the tree-shaped column unit 4. The low stand 8 is a construction and viewing dual-purpose platform frame, and the high stand 9 is a construction and eave dual-purpose construction frame. The construction corridor is fixedly connected to the bottom of the high stand.

[0087] Referring to Figures 9-12 As shown, the low stand 8 includes a low stand inclined strut group pole frame and a low stand horizontal pole frame, which is located on the upper side of the low stand inclined strut group pole frame and is supported by the low stand inclined strut group pole frame.

[0088] The low stand inclined strut group pole frame includes a lower inclined strut single pole 81, a horizontal transverse strut pole 82, a horizontal longitudinal strut pole 83, and an upper bifurcated strut pole 84. The lower inclined strut single pole 81 and the upper bifurcated strut pole 84 are integrally Y-shaped, and the lower inclined strut single pole 81, the horizontal transverse strut pole 82, and the upper bifurcated strut pole 84 are located in the same vertical plane.

[0089] The horizontal transverse strut pole 82 and the horizontal longitudinal strut pole 83 are located in the same horizontal plane. The horizontal longitudinal strut pole 83 is arranged along the length of the rear side of the main body structure, and the horizontal transverse strut pole 82 is arranged one-to-one corresponding to the rear row of frame edge columns 3. The inner end of the horizontal transverse strut pole 82 is fixedly connected to the rear upper column 31, and the two ends of the horizontal longitudinal strut pole 83 are fixedly connected between the outer ends of adjacent horizontal transverse strut poles 82.

[0090] The bottom end of the lower inclined strut single pole 81 is fixedly connected to the column foot of the rear upper column 31, and the top end of the lower inclined strut single pole 81 is fixedly connected to the bottom of the horizontal transverse strut pole 82.

[0091] The upper layer bifurcated support rod 84 comprises a front fork rod 841 and a rear fork rod 842, the top end of the front fork rod 841 is fixedly connected to the column body of the rear row upper column 31 above the horizontal transverse support rod 82, the top end of the front fork rod 841 is fixedly connected below the connection point of the low-level horizontal rod frame and the rear row upper column 31, the bottom end of the rear fork rod 842 and the bottom end of the front fork rod 841 are fixedly connected to the same connection point on the top surface of the horizontal transverse support rod 82, and the top end of the front fork rod 841 is fixedly connected to the bottom surface of the low-level horizontal rod frame.

[0092] The column body frame beam 7 comprises a column body upper beam 71 and a column body lower beam 72, the two ends of the column body upper beam 71 are hingedly connected to the column body of the rear row upper column, and the two ends of the column body lower beam 72 are fixedly connected to the column body of the rear row upper column.

[0093] The low-level horizontal rod frame comprises a low-level transverse main beam 85, a low-level longitudinal main connecting beam 86 and a low-level transverse secondary connecting beam 87, the low-level transverse main beam 85, the low-level longitudinal main connecting beam 86, the low-level transverse secondary connecting beam 87 and the column body lower beam 72 are located in the same horizontal plane,

[0094] The low-level transverse main beam 85 is provided in one-to-one correspondence with the rear row frame side column 3, the top end of the rear fork rod 842 is fixedly connected to the bottom surface of the low-level transverse main beam 85, and the top end of the front fork rod 841 is fixedly connected below the connection point of the low-level transverse main beam 85 and the rear row upper column 31,

[0095] The low-level longitudinal main connecting beam 86 is provided with two beams, and the two ends thereof are fixedly connected between adjacent low-level transverse main beams 85, the low-level longitudinal main connecting beam 86 comprises an inner connecting beam 861 and an outer connecting beam 862, the two ends of the inner connecting beam 861 are fixedly connected between the inner ends of adjacent low-level transverse main beams 85 and the outer side of the column body lower beam 72, the two ends of the outer connecting beam 862 are fixedly connected between the outer ends of adjacent low-level transverse main beams 85, and the two ends of the low-level transverse secondary connecting beam 87 are fixedly connected between the inner connecting beam 861 and the outer connecting beam 862, and at least two beams are provided.

[0096] Referring to Figures 13-14 As shown, the body of the high-level frame 9 is in a C shape, comprising a high-level inclined rod 91, a high-level side rod 92 and a high-level horizontal rod 93, the high-level inclined rod 91, the high-level side rod 92 and the high-level horizontal rod 93 are located in the same vertical plane, the vertical plane corresponds to the rear row upper column in one-to-one correspondence and is arranged on the vertical plane where the center line of the rear row upper column is located, the two ends of the high-level side rod 92 are fixedly connected between the top end of the high-level inclined rod 91 and the outer end of the front high-level horizontal rod 93, the inner end of the high-level horizontal rod 93 is hingedly connected to the middle part of the column top frame beam corresponding to the column top position of the rear row upper column, and the bottom end of the high-level inclined rod 91 is hingedly connected to the column body of the rear row upper column.

[0097] The overhead 9 further comprises overhead connecting group beams arranged between adjacent bodies, the overhead connecting group beams comprising overhead longitudinal main connecting beams 94 and overhead transverse secondary connecting beams 95, the overhead longitudinal main connecting beams 94 being arranged in three rows and fixedly connected between adjacent two overhead side bars 92 along the height direction of the overhead side bars 92, respectively being high connecting beams 941, middle connecting beams 942 and low connecting beams 943,

[0098] The column top frame beam 6, the overhead horizontal bar 93, the high connecting beam 941 and the overhead transverse secondary connecting beam 95 are located in the same horizontal plane, and the two ends of the high connecting beam 941 are fixedly connected between the outer ends of adjacent overhead horizontal bars 93.

[0099] The column top beam 71 is located directly above the column lower beam 72, and the connection positions of the two ends thereof are located at the bottom end of the overhead inclined bar 91 and the hinged position of the rear row of upper columns 31.

[0100] The rear end two-corner connection nodes of the tree-shaped column rectangular frame are tree-shaped column rear connection nodes 15, the two ends of the overhead transverse secondary connecting beam 95 are fixedly connected between the center of the corresponding high connecting beam 941 and the column top frame beam 6, the inner end of the overhead transverse secondary connecting beam 95 is fixedly connected on the tree-shaped column rear connection node 15, the outer end of the overhead transverse secondary connecting beam 95 is fixedly connected at the center of the high connecting beam 941, the two ends of the middle connecting beam 942 are fixedly connected between the middle portions of adjacent overhead side bars 92, and the two ends of the low connecting beam 943 are fixedly connected between the bottom ends of adjacent overhead side bars 92.

[0101] The construction method of the tree-shaped special column and the cantilever connection structure has the following construction steps:

[0102] Step one, construction of the main body structure.

[0103] Step two, construction of the rear row of lower columns 32 and the rear row of frame middle columns 2.

[0104] Step three, construction of the rear row of upper columns 31 and the low frame 8.

[0105] Step four, construction of the column foot nodes of the tree-shaped column unit on the rear row of frame middle columns 2.

[0106] Step five, assembly of the tree-shaped column unit 4, the assembly steps of the tree-shaped column unit being as follows:

[0107] Step a, assembly platform measurement and line laying;

[0108] Step b, hoisting and positioning of four assembly jig hangers at four corner positions;

[0109] Step c, cross rib plate 41 installation and positioning;

[0110] Step d, hoisting and positioning of tree main beams 42 between adjacent two assembly jigs.

[0111] Step e, hoist the tree tie beam 43 into place between the tree king beams 42;

[0112] Step f, hoist the tree radial strut 44 into place under the rectangular frame;

[0113] Step g, hoist the tree cross strut 45 into place within the rectangular frame, complete the assembly of the tree column unit 4.

[0114] Step six, divide the tree-shaped special column into two installation areas, one is the integral hoisting area for directly hoisting the tree column unit as a whole, and the other is the bulk packing area 17 formed by connecting the components between adjacent tree column units.

[0115] Step seven, after the tree column unit in the integral hoisting area is assembled on the ground according to steps one to six, first install two temporary support columns 16 on the main structure, as shown in Figure 15 ; hoist the tree column unit with the crawler crane outside the main structure site, connect the bottom of the tree radial strut 44 of the tree column unit with the column foot node on the rear frame column 2, then connect the tree tie beam 43 with the rear upper column 31, as shown in Figure 16 .

[0116] Step eight, repeat step seven to complete the construction of another tree column unit, as shown in Figure 17 ; then install the components of the bulk packing area 17 between the two adjacent integral hoisting areas, as shown in Figure 18 ; after the packing installation is completed, hoist the next tree column unit, as shown in Figures 19-20 ; use the crawler crane in combination with the tower crane for installation, repeat this step until all the tree columns are installed, as shown in Figures 21-22 .

[0117] Step nine, construct the elevated track 9.

Claims

1. A tree-shaped, off-column and overhang connection construction, standing on a main structure, said main structure comprising respective front row frame columns (1), respective rear row frame middle columns (2) and respective rear row frame edge columns (3), wherein the front row frame columns (1) are located on respective front side longitudinal edge column axes of the main structure, wherein the rear row frame edge columns (3) are located on respective rear side longitudinal edge column axes of the main structure, and the rear row frame middle columns (2) are located on longitudinal column axes next to the rear row frame edge columns (3), characterized in that: The column top of the main body structure is arranged in a scattered manner, and the elevations from low to high are front row frame columns (1), rear row frame middle columns (2) and rear row frame edge columns (3), and the connecting structure comprises tree-shaped columns and cantilever connecting structures, The main body structure further comprises frame beams, including column top frame beams (6) and column body frame beams (7), wherein the column top frame beams (6) are fixedly connected between the column tops of the rear row frame edge columns (3), and the column body frame beams (7) are connected between the column bodies of the rear row frame edge columns (3), The tree-shaped column comprises a group of tree-shaped column units (4) continuously arranged on the column shafts of the rear row frame middle columns (2) and connected as a whole, and the column foot nodes (11) of the tree-shaped column units are hingedly connected to the column tops of the rear row frame middle columns (2) one by one, Each tree-shaped column unit (4) comprises a cross rib plate (41), tree main beams (42), tree connecting beams (43), tree radial struts (44) and tree cross support struts (45), The tree main beams (42) are two horizontal parallel beams in the same plane, The tree connecting beams (43) are two vertical beams perpendicular to the tree main beams (42) and located in the same plane, and the two ends of the tree connecting beams (43) are fixedly connected to the ends of the left and right tree main beams (42) to form a rectangular frame, and the front end two corner connecting nodes of the rectangular frame are tree-shaped column connecting front nodes (5), and a roof cable-strut structure (10) is arranged between the front row frame columns (1) and the tree-shaped column connecting front nodes (5), The tree radial struts (44) are four struts, the bottom ends of which are fixedly connected to the same column foot node (11), and the top ends are fixedly connected to the bottom of the four corner connecting positions of the rectangular frame to form the edges of an inverted four-sided pyramid, The tree cross support struts (45) are located in the same plane as the rectangular frame, and the four ends of the tree cross support struts (45) are fixedly connected to the four corner connecting position nodes of the rectangular frame, wherein adjacent two tree-shaped column units (4) share one tree main beam (42), the tree connecting beams (43) are divided into inner tree connecting beams (431) and outer tree connecting beams (432), wherein the outer tree connecting beams (432) are located on the rear longitudinal edge column shaft, the middle part of the beam bottom of the outer tree connecting beams (432) is fixedly connected to the column top of the rear row frame edge column (3), and the outer tree connecting beams (432) form the column top frame beam (6), The cantilever connecting structure is a double-layer support frame arranged in a split manner, and the heights of the arranged positions include low shelves (8) and high shelves (9), the low shelves (8) are fixedly connected to the tree-shaped column units (4), the high shelves (9) are hingedly connected to the tree-shaped column units (4), the low shelves (8) are dual-purpose platform shelves for construction and observation, and the high shelves (9) are dual-purpose construction shelves for construction eaves, and a construction corridor is fixedly connected to the bottom of the high shelves. The column foot node (11) of the tree-shaped column unit (4) is a cast steel column foot, which is hinged through a self-stabilizing pot-type spherical hinge support between the column top of the rear row frame middle column (2), the rear row frame middle column (2) is a steel reinforced concrete column or a reinforced concrete column, the lower half of the rear row frame side column (3) is a rear row lower column (32), which is a steel reinforced concrete column or a reinforced concrete column, and the upper half of the rear row frame side column (3) is a rear row upper column (31), which is a steel column, and a cantilever connecting structure is arranged in the range of the rear row upper column (31), The column body frame beam (7) is connected between the column bodies of each rear row upper column; The self-stabilizing pot-type spherical hinge support is fixedly connected to the top surface of the embedded plate (12) embedded in the center of 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 support includes a support body (13) and surrounding self-stabilizing fixed group plates (14), the surrounding self-stabilizing fixed group plates (14) are six in total and are evenly distributed on the four surrounding surfaces of the support body (13), the surrounding self-stabilizing fixed group plates (14) are rectangular group plates, the top surface of the surrounding self-stabilizing fixed group plates (14) is flush with the top surface of the support body (13), the bottom surface of the surrounding self-stabilizing fixed group plates (14) is fixedly connected to the embedded plate (12), and the inner side surface of the surrounding self-stabilizing fixed group plates (14) is fixedly connected to the outer side surface of the support body (13).

2. The tree-shaped irregular column and cantilever connecting structure according to claim 1, characterized in that: The low rack (8) includes a low rack inclined strut group pole rack and a low rack horizontal pole rack, the low rack horizontal pole rack is located on the upper side of the low rack inclined strut group pole rack and is supported by the low rack inclined strut group pole rack, The low rack inclined strut group pole rack includes a lower layer inclined strut single pole (81), a horizontal transverse strut pole (82), a horizontal longitudinal strut pole (83) and an upper layer bifurcated strut pole (84), the lower layer inclined strut single pole (81) and the upper layer bifurcated strut pole (84) are integrally Y-shaped, the lower layer inclined strut single pole (81), the horizontal transverse strut pole (82) and the upper layer bifurcated strut pole (84) are located in the same vertical plane, The horizontal transverse strut pole (82) and the horizontal longitudinal strut pole (83) are located in the same horizontal plane, the horizontal longitudinal strut pole (83) is arranged along the rear side of the main body structure, the horizontal transverse strut pole (82) is arranged in one-to-one correspondence with the rear row frame side column (3), the inner end of the horizontal transverse strut pole (82) is fixedly connected to the rear row upper column (31), and the two ends of the horizontal longitudinal strut pole (83) are fixedly connected between the outer ends of adjacent horizontal transverse strut poles (82), The bottom end of the lower layer inclined strut single pole (81) is fixedly connected to the column foot portion of the rear row upper column (31), and the top end of the lower layer inclined strut single pole (81) is fixedly connected to the pole bottom of the horizontal transverse strut pole (82), The upper layer bifurcated support rod (84) comprises a front fork rod (841) and a rear fork rod (842), the top end of the front fork rod (841) is fixedly connected to the column body of the rear row upper column (31) above the horizontal transverse support rod (82), the top end of the front fork rod (841) is fixedly connected below the connecting point of the low-level horizontal rod frame and the rear row upper column (31), the bottom end of the rear fork rod (842) and the bottom end of the front fork rod (841) are fixedly connected to the same connecting point on the top surface of the horizontal transverse support rod (82), and the top end of the front fork rod (841) is fixedly connected to the bottom surface of the low-level horizontal rod frame.

3. The tree-shaped different column and cantilever connection structure according to claim 2, characterized in that: The column body frame beam (7) comprises a column body upper beam (71) and a column body lower beam (72), the two ends of the column body upper beam (71) are hingedly connected to the column body of the rear row upper column, and the two ends of the column body lower beam (72) are fixedly connected to the column body of the rear row upper column, The low-level horizontal rod frame comprises a low-level transverse main beam (85), a low-level longitudinal main connecting beam (86) and a low-level transverse secondary connecting beam (87), and the low-level transverse main beam (85), the low-level longitudinal main connecting beam (86), the low-level transverse secondary connecting beam (87) and the column body lower beam (72) are located in the same horizontal plane, The low-level transverse main beam (85) is arranged in one-to-one correspondence with the rear row frame edge column (3), the top end of the rear fork rod (842) is fixedly connected to the bottom surface of the low-level transverse main beam (85), and the top end of the front fork rod (841) is fixedly connected below the connecting point of the low-level transverse main beam (85) and the rear row upper column (31), The low-level longitudinal main connecting beam (86) is provided with two low-level longitudinal main connecting beams, and the two ends of each low-level longitudinal main connecting beam are fixedly connected between adjacent low-level transverse main beams (85), the low-level longitudinal main connecting beam (86) comprises an inner connecting beam (861) and an outer connecting beam (862), the two ends of the inner connecting beam (861) are fixedly connected between the inner ends of adjacent low-level transverse main beams (85) and the outer side of the column body lower beam (72), and the two ends of the outer connecting beam (862) are fixedly connected between the outer ends of adjacent low-level transverse main beams (85), and the two ends of the low-level transverse secondary connecting beam (87) are fixedly connected between the inner connecting beam (861) and the outer connecting beam (862).

4. The tree-shaped different column and cantilever connection structure according to claim 3, characterized in that: The body of the high-level frame (9) is in a C shape and comprises a high-level inclined rod (91), a high-level side rod (92) and a high-level horizontal rod (93), the high-level inclined rod (91), the high-level side rod (92) and the high-level horizontal rod (93) are located in the same vertical plane, the vertical plane is in one-to-one correspondence with the rear row upper column and is arranged on the vertical plane where the center line of the rear row upper column is located, the two ends of the high-level side rod (92) are fixedly connected between the top end of the high-level inclined rod (91) and the outer end of the front high-level horizontal rod (93), the inner end of the high-level horizontal rod (93) is hingedly connected to the middle part of the column top frame beam and corresponds to the column top position of the rear row upper column, and the bottom end of the high-level inclined rod (91) is hingedly connected to the column body of the rear row upper column (31).

5. The tree-shaped heteropod with cantilever connection structure according to claim 4, characterized in that: The high rack (9) further comprises high rack connecting group beams arranged between adjacent bodies, the high rack connecting group beams comprising high rack longitudinal main connecting beams (94) and high rack transverse secondary connecting beams (95), the high rack longitudinal main connecting beams (94) being arranged in three rows and being fixedly connected between adjacent two high rack side poles (92) along the height direction of the high rack side poles (92) in sequence, respectively being a high connecting beam (941), a middle connecting beam (942) and a low connecting beam (943), Wherein the column top frame beam (6), the high rack horizontal pole (93), the high connecting beam (941) and the high rack transverse secondary connecting beam (95) are located in the same horizontal plane, the two ends of the high connecting beam (941) are fixedly connected between the outer ends of adjacent high rack horizontal poles (93), The column body upper beam (71) is located directly above the column body lower beam (72), and the connection positions of the two ends thereof are located on the column body inner side at the same height as the hinged positions of the bottom ends of the high rack inclined poles (91) and the rear row upper columns (31).

6. The tree-shaped different column and cantilever connecting structure according to claim 5, characterized in that: The two corners of the rear end of the rectangular frame are connected to a tree-shaped column connecting rear node (15), the two ends of the high rack transverse secondary connecting beam (95) are fixedly connected between the center of the corresponding high connecting beam (941) and the column top frame beam (6), the inner end of the high rack transverse secondary connecting beam (95) is fixedly connected to the tree-shaped column connecting rear node (15), and the outer end of the high rack transverse secondary connecting beam (95) is fixedly connected to the center of the high connecting beam (941), The two ends of the middle connecting beam (942) are fixedly connected between the middle portions of adjacent high rack side poles (92), and the two ends of the low connecting beam (943) are fixedly connected between the bottom ends of adjacent high rack side poles (92).

7. A construction method of a tree-shaped heterostyly and cantilever connection configuration according to claim 6, characterized in that, The construction steps are as follows: Step one, construction of the main body structure; Step two, construction of the rear row lower columns (32) and the rear row frame middle columns (2); Step three, construction of the rear row upper columns (31) and the low rack (8); Step four, construction of the column foot nodes of the tree-shaped column unit on the rear row frame middle columns (2); Step five, assembly of the tree-shaped column unit (4); Step six, the tree-shaped different column is divided into two installation areas, namely a whole hoisting area for directly whole hoisting of the tree-shaped column unit and a scattered filling area (17) formed by connecting components between adjacent tree-shaped column units; Step seven, after the tree-shaped column unit in the whole hoisting area is assembled on the ground, two temporary support columns (16) are arranged on the main body structure, hoisting is performed outside the main body structure field by a caterpillar crane, the bottom of the tree radial bracing pole (44) of the tree-shaped column unit is connected to the column foot node on the rear row frame middle column (2), and then the tree connecting beam (43) is connected to the rear row upper column (31); Step eight, another tree-shaped column unit is constructed by repeating step seven, and then the components of the scattered filling area (17) are installed between adjacent whole hoisting areas; after the filling installation is completed, hoisting of the next tree-shaped column unit is performed, the caterpillar crane is used in cooperation with a tower crane for installation, and the step is repeated until all the tree-shaped columns are installed; Step nine, construction of the high rack (9).

8. The construction method of a tree-shaped alluvion and cantilever connection structure according to claim 7, characterized in that: The assembly of the tree-shaped column unit in step five is as follows: Step a, assembly platform measurement and line laying; Step b, hoist and set the four assembling cradles in place at the four corners; Step c, install and position the cross rib (41); Step d, hoist and set the tree main beams (42) in place between the two adjacent assembling cradles; Step e, hoist and set the tree connecting beams (43) in place between the tree main beams (42); Step f, hoist and set the tree radial struts (44) in place under the rectangular frame; Step g, hoist and set the tree cross struts (45) in place within the rectangular frame, and complete the assembly of the tree column unit (4).

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